calculation tinh lun bom hut chan khong

CONG TRNH : XAY DNG 4 TUYEN NG CHNH TRONG KHU O TH MI THU THIEM HANG MUC : TUYEN R3: NG VEN SONG SAI GON - X LY NEN A IEM : QUAN 2, TP. HO CH MINH BC THIET KE : THIET KE BAN VE THI CONG

QUAN 2 TP. HO CH MINH

D AN AU T XAY DNG 4 TUYEN NG CHNH TRONG KHU O TH MI THU THIEM

THIET KE BAN VE THI CONG X LY AT YEU TREN TUYEN R3

MUC LUC I CAN C PHAP LY ........................................................................................................................... 3

I.1 Ten d an ....................................................................................................................................... 3

I.2 Chu au t cong trnh: .................................................................................................................. 3

I.3 T van lap thiet ke Ban ve thi cong ................................................................................................ 3

I.4 Cac van ban phap ly ...................................................................................................................... 3

I.5 Nguon tai lieu s dung ................................................................................................................... 4

I.6 Qui trnh, qui pham s dung ........................................................................................................... 4

II GII THIEU CHUNG ....................................................................................................................... 6 II.1 Pham vi cong viec .......................................................................................................................... 6

III HIEN TRANG KHU VC TUYEN NG ................................................................................. 6 III.1 ieu kien a hnh .......................................................................................................................... 6

III.2 ieu kien va thong so a chat ....................................................................................................... 7

III.2.1 ieu kien a chat khu vc d an ................................................................................. 7 III.2.2 Thong so a chat ......................................................................................................... 8 III.2.3 Cat doc a chat tuyen R3 .......................................................................................... 10 III.3 ieu kien thuy van ....................................................................................................................... 11

III.3.1 Cong tac khao sat ieu tra thuy van .......................................................................... 11 III.3.2 Mc nc tnh toan ..................................................................................................... 11

IV QUY MO - TIEU CHUAN KY THUAT & PHNG PHAP LUAN THIET KE ................... 13 IV.1 Phan loai phan cap cong trnh .................................................................................................. 13

IV.2 Quy mo tieu chuan ky thuat ...................................................................................................... 13

IV.3 Yeu cau thiet ke ........................................................................................................................... 14

IV.3.1 Ket cau nen ng ap .............................................................................................. 14 IV.3.2 Cac thong so thiet ke oi vi vat lieu ap va ao ng ............................................. 14 IV.3.3 Mc nc ngam .......................................................................................................... 15 IV.3.4 Tieu chuan ve o lun.................................................................................................. 15 IV.3.5 He so an toan ............................................................................................................. 17 IV.3.7 Hoat tai ....................................................................................................................... 18 IV.3.8 Tai trong ong at ...................................................................................................... 18 IV.3.9 Thi gian thi cong x ly at yeu ................................................................................. 18

V THIET KE X LY NEN AT YEU CHO TUYEN R3 .............................................................. 19 V.1 X ly nen bang DSMC.................................................................................................................. 19

V.1.1 Giai phap ket cau ....................................................................................................... 19 V.1.2 anh gia chi tiet ve on nh va lun cua nen cha x ly bang DSMC ......................... 21 V.1.3 anh gia chi tiet nen sau khi x ly ............................................................................. 22


V.1.4 Kiem toan lp em au coc at xi mang ................................................................. 22 V.1.5 Bo tr va kiem toan lp bn be tong C10..................................................................... 22 V.2 X ly nen bang bac tham ket hp bm hut chan khong (PVDV) ................................................... 23

V.2.1 Giai phap x ly PVDV ................................................................................................ 23 V.2.2 Thiet ke PVDV ............................................................................................................ 23 V.2.3 Tnh toan o lun ......................................................................................................... 24 V.2.4 c tnh cng o khang cat at c trong thi gian hut chan khong va gia tai ..... 26 V.2.5 Phan tch o on nh mai doc ng vi cng o khang cat d kien at c trong qua trnh hut chan khong va chat tai ............................................................................ 27 V.2.6 anh gia chi tiet ve on nh va lun cua nen cha va sau khi x ly bang PVDV ........ 29


CONG HOA XA HOI CHU NGHA VIET NAM oc Lap T Do Hanh Phuc

---- QUAN 2 TP. HO CH MINH

D AN AU T XAY DNG 4 TUYEN NG CHNH TRONG KHU O TH MI THU THIEM

THIET KE BAN VE THI CONG X LY AT YEU TREN TUYEN R3

I CAN C PHAP LY

I.1 Ten d an AU T XAY DNG 4 TUYEN NG CHNH TRONG KHU OTH MI THU THIEM

I.2 Chu au t cong trnh: CONG TY CO PHAN AU T A OC AI QUANG MINH.

I.3 T van lap thiet ke Ban ve thi cong

Lien danh cong ty CHODAI & YOOSHIN (LDTV)

I.4 Cac van ban phap ly Luat so 38/2009/QH12 ngay 19/06/2009 cua Quoc Hoi nc Cong Hoa

Xa Hoi Chu Ngha Viet Nam sa oi, bo sung mot so ieu lien quan en au t xay dng c ban cua Luat xay dng so 16/2003/QH11, Luat au thau so 61/2005/QH11, Luat doanh nghiep so 60/2005/QH11, Luat at ai so 13/2003/QH11 va Luat nha so 56/2005/QH11.

Luat Xay Dng so 16/2003/QH11 ngay 26 thang 11 nam 2003 cua Quoc Hoi khoa IV, ky hop th 4;

Ngh nh so 12/2009/NCP ngay 10 thang 02 nam 2009 cua Chnh phu ve quan ly d an au t xay dng cong trnh va Ngh nh so 83/2009/NCP ngay 15 thang 10 nam 2009 cua Chnh phu ve sa oi, bo sung mot so ieu cua Ngh nh so 12/2009/NCP.

Ngh nh so 15/2013/N-CP ngay 06/02/2013 cua Thu tng Chnh Phu ve Quan ly chat lng cong trnh xay dng.

Thong t so 10/2013/TT-BXD ngay 25 thang 07 nam 2013 cua Bo Xay dng, quy nh chi tiet mot so noi dung ve Quan ly chat lng cong trnh xay dng.

Quyet nh so 5872/Q-UBND ngay 28/10/2013 cua UBND t.p Ho Ch Minh ve viec: Phe duyet d an au t xay dng 04 tuyen ng chnh trong Khu o th mi Thu Thiem theo hnh thc hp ong BT.


Cong van so 1719/SGTVT-XD ngay 18/3/2014 ve y kien ve giai phap x ly nen at yeu cho toan d an au t xay dng 4 tuyen ng chnh trong Khu o th mi Thu Thiem theo hnh thc hp ong BT.

Cong van so 3999/SGTVT-XD ngay 06/6/2014 ve y kien cac van e ton tai cua D an au t xay dng 4 tuyen ng chnh trong Khu o th mi Thu Thiem theo hnh thc hp ong BT.

Cong van so 4696/SGTVT-XD ngay 02/7/2014 ve y kien ve giai phap x ly nen tren at yeu va be rong cau cua D an au t xay dng 4 tuyen ng chnh trong Khu o th mi Thu Thiem theo hnh thc hp ong BT.

I.5 Nguon tai lieu s dung

Ho s Bao cao khao sat a hnh cong trnh Xay dng 4 tuyen ng Chnh Trong Khu o Th Mi Thu Thiem do Cong ty TNHH The Gii Ky Thuat thc hien thang 3/2013;

Ho s Bao cao khao sat a chat cong trnhXay dng 4 tuyen ng Chnh Trong Khu o Th Mi Thu Thiem do Cong ty TNHH The Gii Ky Thuat thc hien thang 3/2013;

Ho s Thiet ke c s cong trnhXay dng 4 tuyen ng Chnh Trong Khu o Th Mi Thu Thiem lap thang 05/2012 va Bao cao bo sung Thiet ke c s cong trnhXay dng 4 tuyen ng Chnh Trong Khu o Th Mi Thu Thiem lap thang 09/2013 do Lien danh T van CHODAI & YOOSHIN thc hien.

Bao cao nghien cu giai phap x ly nen cho toan d an do Lien danh t van CHODAI & YOOSHIN thc hien thang 03/2014.

Bao cao thi cong coc th DSMC do LDTV lap thang 7/2014. I.6 Qui trnh, qui pham s dung

Qui trnh, qui pham theo Khung tieu chuan cua toan d an. Mot so tieu chuan cho hang muc x ly nen nh sau:

STT No.

Ten tieu chuan quy trnh, quy pham ky thuat Specifications and standards

Ma hieu Code

1 ng o to Yeu cau thiet ke Specification for highway design

TCVN 4054-2005

2 ng o th Yeu cau thiet ke Urban road Requirements for design

TCVN 104-2007

3

Quy trnh khao sat thiet ke nen ng o to ap tren at yeu Specification for survey, investigation and design of highway embankment on soft soil

22 TCN 262-2000

4 Tieu chuan thiet ke cau Bridges Design specification

22 TCN 272-2005


STT No.


Ma hieu Code

5

Gia co nen at yeu Phng phap tru at - xi mang Stabilization of soft soil Soil cement column method

TCVN 9403-2012

6

Quy nh tam thi ve ky thuat thi cong va nghiem thu hang muc x ly nen at yeu bang phng phap co ket hut chan khong co mang kn kh trong xay dng cong trnh giao thong. Temporary regulations on construction technique and acceptance for soft soil treatment by consolidated method with vacuum and airtight film for transportation projects.

384/Q-BGTVT 07/02/2013

7

Quy nh tam thi ve cac giai phap ky thuat cong nghe oi vi oan chuyen tiep gia ng va cau (cong) tren ng o to. Temporary regulations on technical solutions for transition segment beween road and bridge (culvert) on highway.

3095/Q-BGTVT 07/10/2013

8

Quy trnh thi cong va nghiem thu bac tham trong xay dng nen ng tren at yeu Specification for construction and acceptance of highway embankment on soft soil

22 TCN 236-1997

9 Gia co nen at yeu bang bac tham thoat nc Ground improvements by prefabricated vertical drain

TCVN 9355-2012

10

Vai a ky thuat trong xay dng nen ap tren at yeu Tieu chuan thiet ke, thi cong va nghiem thu Geotextile for road embankment on soft soil - Specification for design, construction and acceptance

22 TCN 248-98

11 Vai a ky thuat Phng phap th Geotextile Standard test method

TCVN 8871-2011

12

Coc Phng phap th nghiem hien trng bang tai trong tnh ep doc truc Piles Standard in situ test method for pile under axial compressive load

TCVN 9393-2012

13

Ao ng mem Cac yeu cau va ch dan thiet ke Flexible pavement requirements and specifications for design

22TCN 211-06


STT No.


Ma hieu Code

14 Nen ng o to Thi cong va nghiem thu TCVN 9436-2012

15 Ximang Pooc lang x lo cao Slag Cement

TCVN 4316-2007

Cac Tieu chuan ky thuat, qui trnh qui pham thiet ke hien hanh khac cua Viet Nam.

II GII THIEU CHUNG

II.1 Pham vi cong viec (1) anh gia bao cao khao sat a chat hien co:

Chu au t a cung cap cac bao cao di ay: Quy hoach he thong c s ha tang chnh ty le 1/500 cho Khu o th

mi Thu Thiem vao thang 12/2007 (t ay goi la bao cao Sasaki). Bao cao khao sat a chat cho giai oan TKBVTC vao thang 3, 2013

(t ay goi la bao cao TW). Bao cao khao sat a chat bo sung vao thang 7/2013 (t ay goi la bao

cao TW2). Can c cac bao cao khao sat a chat noi tren, ieu kien at nen trong khu vc d an a c anh gia trong giai oan TKBVTC. ong thi, khao sat a chat bo sung cung c tien hanh e thu thap cac thong tin can thiet cho thiet ke x ly at yeu. T cac khao sat hien co va bo sung nay, ieu kien at nen trong khu vc d an a c lam ro va cac thong so a chat s dung cho thiet ke x ly at yeu cung a c quyet nh.

III HIEN TRANG KHU VC TUYEN NG

Theo so lieu Bao cao khao sat a hnh, a chat va thuy van do Cong ty TNHH The gii Ky thuat thc hien thang 03/2013, hien trang t nhien a hnh, a chat va thuy van khu vc d an nh sau:

III.1 ieu kien a hnh a hnh khu vc doc tuyen R3 tng oi bang phang. oan t au tuyen en ham Thu Thiem la khu dan c cu a giai toa va

khu vc a san lap mat bang, cao o trung bnh t +1.40m 2.10m. Cuc bo mot so v tr la ao ho trung thap cha san lap co cao o trung bnh t +0.4m +0.8m.

oan t ham Thu Thiem en cuoi tuyen la oan i qua khu vc at trong, vn cay cu cha xay dng nha co cao o trung bnh t +0.5m +1.5m va oan i qua ao ho trung thap cha san lap co cao o trung bnh t -0.5m +0.2 m.

ng hien hu giao cat vi tuyen R3 bao gom:


ng Lng nh Cua giao cat vi R3 tai coc C75 (Km 1+480) la ng be tong nha, mat ng hien hu rong trung bnh 8m.

ng Mai Ch Tho giao cat vi R3 tai coc C92(Km1+820) C98(Km 1+940) la ng noi bo tren lng ham Thu Thiem, cu the nh sau: Mat bang: Chieu dai ng hien hu oan tren lng ham Thu

Thiem giao cat vi R3 la 100m.. Mat cat ngang: be rong ng mat hien hu B=21m. Ket cau ao ng: oan tren lng ham Thu Thiem la ket cau be

tong, oan con lai la ket cau be tong nha.. Cao o mat ng hien hu: trung bnh +2.10m +2.27m.

Ngoai ra co mot so tuyen ng hien hu bang be tong nha rong 3m 4m cat qua tuyen.

III.2 ieu kien va thong so a chat

III.2.1 ieu kien a chat khu vc d an Hai khao sat a chat di ay a c tien hanh tai khu vc d an. Bao cao Sasaki: khao sat a chat phuc vu thiet ke quy hoach chi tiet

ty le 1/500 va thiet ke he thong c s ha tang chnh trong Khu o th mi Thu Thiem (Thang 12/2007).

Bao cao TW: Bao cao khao sat a chat trong giai oan TKBVTC (Thang 03/2013).

Theo ket qua cua cac khao sat a chat nay, cac lp at set yeu en rat yeu 1a va 1b (t ay goi la lp VSC) co o day thay oi t 10m en 39m xuat hien trong cac khu vc c anh dau trong Hnh 1. Trong Hnh 1, cac khu vc c anh dau mau tm la cac khu vc co lp VSC vi o day ln t 30m en hn 35m. Cac lp at ben di lp VSC la cac lp set na cng en cng 3, 5a va TK2 (t ay goi la lp MSC), lp cat ri en chat va 2 va TK1 (t ay goi la lp LS) va lp cat chat va en chat 4a, 4b va 6a (t ay goi la lp MDS).

(1) Khu vc A

Khu vc (A) nam tai pha Tay Bac cua cong trng d an. Lp VSC tai khu vc (A) gom lp set tng oi ong nhat va lp cat xen ke nhe. Lp VSC co o day thay oi t 15m en 39m va lp VSC quanh khu vc cau so 6 tren tuyen R1 co o day t 30m en 39m. Da tren ket qua cua th nghiem trong phong, lp VSC trong khu vc (A) c chia thanh 6 lp nho trong lp 1a va 2 lp nho trong lp 1b.

(2) Khu vc B

Lp (B) nam tai pha Tay Nam cua cong trng d an. Lp VSC tai khu vc (B) gom lp set tng oi ong nhat va lp cat xen ke nhe. Lp VSC co o day thay oi t 20m en 30m va lp LS, TK1 co o day t 2m en


5m xen ke trong lp VSC. Lp VSC trong khu vc (B) c chia thanh 4 lp nho trong lp 1a va 2 lp nho trong lp 1b tng t nh khu vc (A).

(3) Khu vc C

Khu vc (C) nam tai b song Sai Gon pha Tay cua cong trng d an. Lp VSC trong khu vc (C) gom lp set tng oi ong nhat va lp cat xen ke nhe. Lp VSC co o day thay oi t 15m en 25m. Lp VSC trong khu vc (C) c chia thanh 3 lp nho trong lp 1a va 2 lp nho trong lp 1b tng t nh khu vc (A).

(4) Khu vc D

Khu vc (D) nam tai pha Nam cua cong trng d an. Lp VSC trong khu vc (D) gom lp set tng oi ong nhat va lp cat xen ke nhe. Lp VSC co o day thay oi t 20m en 35m. Lp VSC trong khu vc (D) c chia thanh 2 lp nho trong lp 1a va 2 lp nho trong lp 1b.

(5) Khu vc E

Khu vc (E) nam tai pha ong cua cong trng d an. Lp VSC trong khu vc (E) gom lp set tng oi ong nhat va lp cat xen ke nhe. Lp VSC co o day thay oi t 15m en 30m. Lp VSC trong khu vc (E) c chia thanh 4 lp nho trong lp 1a.

III.2.2 Thong so a chat Da tren ket qua cua cac cuoc khao sat a chat noi tren, cac thong so a chat cua khu vc (A) en (E) e TKBVTC x ly at yeu cho D an c tom tat trong Bang 1 en Bang 5. Cac thong so a chat c quyet nh da tren ket qua th nghiem trong phong va gia tr SPT N.

Hnh 1 Ban o ong mc ve chieu day cua lp set yeu


Bang 1 Thong so a chat e thiet ke tai khu vc (A)

Bang 2 Thong so a chat e thiet ke tai khu vc (B)

Bang 3 Thong so a chat e thiet ke tai khu vc (C)

Bang 4 Thong so a chat e thiet ke tai khu vc (D)

Bang 5 Thong so a chat e thiet ke tai khu vc (E)

t cu E Cv Ch

Top Bottom kN/m3 kN/m2 degree kN/m2 m2/yr m2/yr1 A-0 top 0 Clay 0 14.4 10.5 0 200cu 1.100 0.200 2.450 0.319 0.058 1.00 0.80 1.60

2 A-1 0 -13 Clay 0 14.4 10.5+1z 0 200cu 1.100 0.200 2.450 0.319 0.058 1.20 0.80 1.60

3 A-2 -13 -20 Clay 0 14.6 10.5+1z 0 200cu 1.020 0.190 2.400 0.300 0.056 1.00 0.80 1.60

4 A-3 -20 -25 Clay 0 15.0 10.5+1z 0 200cu 1.080 0.220 2.050 0.354 0.072 1.00 0.80 1.60

5 A-4 -25 -30 Clay 0 15.5 10.5+1z 0 200cu 1.150 0.220 1.950 0.390 0.075 1.00 0.80 1.60

6 A-5 -30 bottom Clay 0 16.0 10.5+1z 0 200cu 1.150 0.220 1.850 0.404 0.077 1.00 0.80 1.60

7 - - Sand 10 18.0 0 30 1500N - - - - - - - -

8 - - Clay 12 19.0 50 0 200cu 0.250 0.060 0.900 0.132 0.032 2.20 1.50 3.00

9 - - Sand 15 20.0 0 30 1500N - - - - - - - -

10 - - Sand 35 20.0 0 32 1500N - - - - - - - -

11 - - Clay 30 20.0 5N 0 200cu 0.160 0.050 0.600 0.100 0.031 1.60 2.00 4.00

12 - - Sand 35 20.0 0 32 1500N - - - - - - - -

13 - - Clay 25 20.0 5N 0 200cu 0.220 0.060 0.900 0.116 0.032 1.60 1.00 2.00

2

3

1a

4a

4b

5a

6a

TK2

OCRN

valueCc Cr e0

Cc/

(1+e0)

Cr/

(1+e0)SoilType

No LayerElevation

t cu E Cv Ch

Top Bottom kN/m3 kN/m2 degree kN/m2 m2/yr m2/yr1 B-0 top 0 Clay 0 14.8 10.5 0 200cu 1.150 0.180 2.400 0.338 0.053 1.45 1.00 2.00

2 B-1 0 -5 Clay 0 14.8 10.5+1z 0 200cu 1.150 0.180 2.400 0.338 0.053 1.45 1.00 2.00

3 B-2 -5 -20 Clay 0 15.0 10.5+1z 0 200cu 0.900 0.150 2.200 0.281 0.047 1.15 1.00 2.00

4 B-3 -20 bottom Clay 0 15.6 10.5+1z 0 200cu 0.900 0.150 1.950 0.305 0.051 1.15 1.00 2.00

5 B-2 top -20 Clay 2 15.0 10.5+1z 0 200cu 0.900 0.150 2.200 0.281 0.047 1.00 1.00 2.00

6 B-3 -20 Bottom Clay 5 15.6 10.5+1z 0 200cu 0.900 0.150 1.950 0.305 0.051 1.00 1.00 2.00

7 - - Sand 8 18.0 0 30 1500N - - - - - - - -

8 - - Sand 14 18.0 0 30 1500N - - - - - - - -

9 - - Clay 12 19.0 5N 0 200cu 0.250 0.060 0.900 0.132 0.032 2.20 1.50 3.00

10 - - Sand 16 20.0 0 30 1500N - - - - - - - -

11 - - Sand 35 20.0 0 32 1500N - - - - - - - -

12 - - Clay 30 20.0 5N 0 200cu 0.160 0.050 0.600 0.100 0.031 1.60 2.00 4.00

13 - - Clay 25 20.0 5N 0 200cu 0.220 0.060 0.900 0.116 0.032 1.60 1.00 2.00TK2

1a

1b

TK1

e0

2

3

4a

4b

5a

Cc/

(1+e0)

Cr/

(1+e0)OCR

Elevation SoilType

Nvalue

Cc CrNo Layer

t cu E Cv Ch

Top Bottom kN/m3 kN/m2 degree kN/m2 m2/yr m2/yr1 C-0 top 0 Clay 0 14.6 10.5 0 200cu 0.920 0.160 2.350 0.275 0.048 1.25 0.80 1.60

2 C-1 0 -10 Clay 0 14.6 10.5+1z 0 200cu 0.920 0.160 2.350 0.275 0.048 1.25 0.80 1.60

3 C-2 -10 bottom Clay 0 15.2 10.5+1z 0 200cu 0.850 0.145 2.100 0.274 0.047 1.10 0.60 1.20

4 C-1 top -10 Clay 2 14.6 10.5+1z 0 200cu 0.920 0.160 2.350 0.275 0.048 1.25 0.80 1.60

5 C-2 -10 Bottom Clay 2 15.2 10.5+1z 0 200cu 0.850 0.145 2.100 0.274 0.047 1.10 0.60 1.20

6 - - Sand 10 18.0 0 30 1500N - - - - - - - -

7 - - Clay 12 19.0 5N 0 200cu 0.250 0.060 0.900 0.132 0.032 2.20 1.50 3.00

8 - - Sand 12 20.0 0 30 1500N - - - - - - - -

9 - - Clay 25 20.0 5N 0 200cu 0.160 0.050 0.600 0.100 0.031 1.60 2.00 4.00

10 - - Clay 5 20.0 5N 0 200cu 0.220 0.060 0.900 0.116 0.032 1.60 1.00 2.00TK2

1a

Cc Cr e0

1b

2

3

4a

5a

Cc/

(1+e0)

Cr/

(1+e0)OCRNo Layer

Elevation SoilType

Nvalue

t cu E Cv Ch

Top Bottom kN/m3 kN/m2 degree kN/m2 m2/yr m2/yr1 D-0 top 0 Clay 0 15.0 10.5 0 200cu 1.15 0.21 2.15 0.365 0.067 1.2 0.60 1.20

2 D-1 0 -13 Clay 0 15.0 10.5+1z 0 200cu 1.15 0.21 2.15 0.365 0.067 1.2 0.60 1.20

3 D-2 -13 -20 Clay 0 15.8 10.5+1z 0 200cu 0.95 0.2 1.72 0.349 0.074 1.2 0.80 1.60

4 D-2 top -20 Clay 0 15.8 10.5+1z 0 200cu 0.95 0.2 1.72 0.349 0.074 1.2 0.80 1.60

5 D-3 -20 Bottom Clay 0 16.2 10.5+1z 0 200cu 0.65 0.13 1.6 0.250 0.050 1.1 1.00 2.00

6 - - Sand 8 20.0 0 30 1500N - - - - - - - -

7 - - Sand 10 20.0 0 30 1500N - - - - - - - -

8 - - Sand 8 18.0 0 30 1500N - - - - - - - -

9 - - Clay 18 19.0 5N 0 200cu 0.250 0.060 0.900 0.132 0.032 2.20 1.50 3.00

10 - - Sand 25 20.0 0 30 1500N - - - - - - - -

11 - - Clay 30 20.0 5N 0 200cu 0.160 0.050 0.600 0.100 0.031 1.60 2.00 4.00

4a

5a

3

Cc Cr e0Cc/

(1+e0)

1a

1b

TK2

TK3

2

Cr/

(1+e0)OCRNo Layer

Elevation SoilType

Nvalue

t cu E Cv Ch

Top Bottom kN/m3 kN/m2 degree kN/m2 m2/yr m2/yr1 E-0 top 0 Clay 0 14.2 10.5 0 200cu 1.3 0.17 2.7 0.35 0.05 1.2 1.00 2.00

2 E-1 0 -5 Clay 0 14.2 10.5+1z 0 200cu 1.3 0.17 2.7 0.35 0.05 1.2 0.90 1.80

3 E-2 -5 -13 Clay 0 14.6 10.5+1z 0 200cu 1.1 0.21 2.45 0.32 0.06 1.25 0.90 1.80

4 E-3 -13 Bottom Clay 0 14.6 10.5+1z 0 200cu 0.9 0.15 1.95 0.31 0.05 1.05 0.90 1.80

5 - - Clay 12 19.0 5N 0 200cu 0.250 0.060 0.900 0.132 0.032 2.20 1.00 2.00

6 - - Sand 16 20.0 0 30 1500N - - - - - - - -

7 - - Sand 35 20.0 0 30 1500N - - - - - - - -

Cr/

(1+e0)OCR

1a

3

4b

e0Cc/

(1+e0)

6a

SoilType

Nvalue

Cc CrElevation

No Layer


III.2.3 Cat doc a chat tuyen R3 Can c vao cac ket qua khao sat hien trng va th nghiem trong phong, a tang khu vc doc tuyen khao sat co the chia thanh cac lp at chnh nh sau:

(1) Lp K: at ap, at mat bao gom: lp mong set lan hu c, xam xanh, xam vang, nau vang. Lp nay chu yeu la at ap b, ap ng, nen nha, at ruong... Be day lp bien oi t 0.1m en 2.5m

(2) Lp 1a: SET RAT DEO (CH), oi cho lan cac lp cat mong, lan hu c, xam xanh, xam en, trang thai chay en deo chay. V tr a tang nam di lp lp at san lap. Be day lp thay oi t 7.0m (LKR3-9) en 33.50m (LKR3-1). Cao o ay lp bien oi t -32.12m (LKR3-1) en -6.01m (LKR3-9).

Hnh 2 Trac doc a chat tuyen R3

(3) Lp 1b: SET RAT DEO KEP CAT (CH)/(CH)s, xen lan cac lp mong cat, xam xanh, xam en, trang thai deo chay en deo mem. Be day lp thay oi t 2.80m (LKR3-7) en 9.45m (LKR3-15). Cao o ay lp bien oi t -26.25m (LKR3-7) en -13.28m (LKR3-10).

(4) Lp 2:CAT BUI, CAT SET, oi cho lan san soi thach anh, mau xam xanh, xam trang, nau vang, ket cau t ri en chat va. V tr a tang nam di lp 1a va lp 1b. Be day lp thay oi t 1.40m (LKC17-3) en 3.00m (LKR3-12). Cao o ay lp bien oi t -21.46m (LKR3-7) en -17.54m (LKR3-9). Lp nay gap ho khoan LKR3-12, LKR3-13, LKR3-14, LKC17-


1, LKC17-3.

(5) Lp 3: SET RAT DEO, mau xam xanh, xam en, nau vang, trang thai deo cng en na cng. V tr a tang nam di lp 2 va lp 1b. Be day lp thay oi t 1.40m (LKR3-14) en 9.75m (LKC17-3). Cao o ay lp bien oi t -31.21m (LKC17-3) en -24.76m (LKR3-14). Lp nay gap ho khoan LKR3-11, LKR3-12, LKR3-14, LKC17-1, LKC17-3.

(6) Lp 4a: CAT BUI, CAT SET, oi cho lan san soi thach anh, mau xam xanh, xam vang, xam trang, ket cau ri rac en chat va. V tr a tang nam di lp 1a, 1b va lp 3. Be day lp thay oi t 1.60m (LKR3-1) en 9.45m (LKR3-9). Cao o ay lp bien oi t -33.80m (LKR3-2) en -16.83m (LKR3-10).

(7) Thau knh TK-1: cat bui, cat set, mau xam xanh, xam trang, ket cau chat va. V tr a tang nam di lp 1a, xen kep gia hai lp 1a va 1b. Be day bien oi t 1.50m en 2.20m, cac ho khoan LKR3-14 va LKR3-15. Cao o ay thau knh bien oi t -20.06m en -16.80m.

III.3 ieu kien thuy van

III.3.1 Cong tac khao sat ieu tra thuy van Cong tac khao sat ieu tra cum mc nc.

Bang 6 Ket qua thong ke ket qua ieu tra mc nc

STT Tuyen Ly trnh Ten Cum Mc Nc

Hmax 2012

Hmax 2011

Htx Hmin Nguyen

nhan ngap Ghi chu

1 R1 Km0+188 Cum so 2 1.58 1.51 1.32 Thuy Trieu au tuyen 2 R1 Km1+188 Cum so 3 1.61 1.54 1.31 Thuy Trieu Song Sai Gon 3 R1 Km2+048 Cum so 5 1.55 1.48 1.25 Thuy Trieu 4 R3 Km0+713 Cum so 1 1.54 1.44 1.20 Thuy Trieu Cau Ca Tre 1 5 R3 Km1+293 Cum so 4 1.62 1.53 1.30 Thuy Trieu 6 R3 Km2+293 Cum so 8 1.51 1.45 1.27 Thuy Trieu 7 R3 Km1+300 Cum so 6 1.53 1.46 1.32 Thuy Trieu Song Sai Gon 8 R3 Km1+780 Cum so 7 1.57 1.51 -0.27 Thuy Trieu Song Sai Gon 9 R3 Km2+620 Cum so 9 1.49 1.42 1.32 Thuy Trieu Song Sai Gon

10 R3 Km0+820 Cum 10 1.56 1.51 Thuy Trieu 11 R3 Km1+800 Cum 11 1.59 1.53 Thuy Trieu Cau Ca Tre 2

III.3.2 Mc nc tnh toan

III.3.2.1 So lieu mc nc tram Phu An (1) Cao o mc nc ln nhat va nho nhat theo cac tan suat tram Phu An

Bang 7 Cao o mc nc ln nhat va nho nhat theo cac tan suat tram Phu An

ac trng 0.5% 1% 2% 3% 4% 5% 10% 25% 50% Max (cm) 177 171 164 160 158 156 149 139 130 Min (cm) -258 -256 -254 -253 -252 -251 -247 -241 -232


(2) Cao o mc nc ln nhat va nho nhat phuc vu thi cong.

Cao o mc nc phuc vu thi cong tnh theo cao o mc nc ln nhat thang tan suat 10% va cao o mc nc nho nhat hang thang tan suat 90%. T cac chuoi thong ke so lieu mc nc ln nhat va nho nhat hang thang tai tram a xac nh mc nc ln nhat va nho nhat phuc vu thi cong theo Bang 8.

Bang 8 Cao o mc nc ln nhat va nho nhat (cm) phuc vu thi cong

Mc nc Thang I II III IV V VI VII VIII IX X XI XII

Hmax1% 158 155 151 142 140 129 132 147 154 159 167 166 Hmax10% 140 135 130 124 119 110 113 124 136 144 146 143 Hmn1% -197 -217 -215 -208 -235 -250 -255 -250 -234 -196 -202 -193 Hmin90% -148 -151 -157 -165 -184 -204 -204 -198 -175 -132 -135 -142

Hnh 3 Bieu o d bao mc nc ln nhat phuc vu thi cong tai tram Phu An

Hnh 4 Bieu o d bao mc nc nho nhat phuc vu thi cong tai tram Phu An

III.3.2.2 Cao o mc nc thiet ke khu vc Thu Thiem Cao o mc nc ln nhat thiet ke tuyen

Hnh 5 Cao o mc nc ln nhat theo cac tan suat thiet ke tuyen

STT Ten tuyen Ly trnh

Ten cum mc nc

Hmax 2012

Tnh toan Kien ngh H1% (m)

H4% (m)

H1% (m)

H4% (m)

(1) (2) (3) (4) (5) (6) (7) (8) (9) 1 R1 Km0+188 Cum so 2 1.58 1.67 1.54 1.71 1.58 2 R1 Km1+188 Cum so 3 1.61 1.70 1.57 1.71 1.58 3 R1 Km2+048 Cum so 5 1.55 1.64 1.59 1.71 1.58

I II III IV V VI VII VIII IX X XI XII

Hmax1% (m) 1.58 1.55 1.51 1.42 1.40 1.29 1.32 1.47 1.54 1.59 1.67 1.66

Hmax 10% (m) 1.40 1.35 1.30 1.24 1.19 1.10 1.13 1.24 1.36 1.44 1.46 1.43

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

1.60

1.80

H (

m)

BIU D BO MC NC Hmax THI CNG THNG TRM PH AN

I II III IV V VI VII VIII IX X XI XII

Hmin1% (m) -1.97 -2.17 -2.15 -2.08 -2.35 -2.50 -2.55 -2.50 -2.34 -1.96 -2.02 -1.93

Hmin90% (m) -1.48 -1.51 -1.57 -1.65 -1.84 -2.04 -2.04 -1.98 -1.75 -1.32 -1.35 -1.42

-3.00

-2.50

-2.00

-1.50

-1.00

-0.50

0.00

H (

m)

BIU D BO MC NC Hmin THI CNG THNG TR M PH AN


4 R3 Km0+713 Cum so 1 1.54 1.63 1.50 1.71 1.58 5 R3 Km1+293 Cum so 4 1.62 1.71 1.58 1.71 1.58 6 R3 Km2+293 Cum so 8 1.51 1.60 1.47 1.71 1.58 7 R3 Km1+300 Cum so 6 1.53 1.62 1.49 1.71 1.58 8 R3 Km1+780 Cum so 7 1.57 1.66 - 1.71 1.58 9 R3 Km2+620 Cum so 9 1.49 1.58 1.45 1.71 1.58 10 R3 Km0+820 Cum so 10 1.56 1.65 - 1.71 1.58 11 R3 Km1+800 Cum so 11 1.59 1.68 - 1.71 1.58

IV QUY MO - TIEU CHUAN KY THUAT & PHNG PHAP LUAN THIET KE

IV.1 Phan loai phan cap cong trnh Theo Thong t 10/2013/TT-BXD ngay 25/07/2013 cua Bo Xay dng Quy nh chi tiet mot so noi dung ve quan ly chat lng cong trnh xay dng, Quy chuan ky thuat quoc gia ve phan loai, phan cap cong trnh xay dng dan dung, cong nghiep va ha tang ky thuat o th - QCVN 03:2009/BXD, d an au t xay dng 4 tuyen ng chnh Khu o th mi Thu Thiem c phan loai, phan cap nh sau:

Bang 9 Phan cap cong trnh

Ten ng

ng muc tieu Cap cong trnh

R1 ai lo Vong cung Cap II R3 ng Ven ho trung tam Cap II R3 ng Ven song Sai Gon Cap III

R3 ng Vung Chau tho ng Chau tho ng Ven song Khu dan c

Cap IV Cap IV Cap III

IV.2 Quy mo tieu chuan ky thuat Quy mo va tieu chuan ky thuat cua tuyen ng R3 c xac nh theo cac Quy chuan, tieu chuan, quy pham ky thuat quoc gia va theo Thiet ke c s do Lien danh t van Chodai & Yooshin thc hien, nh sau: Loai cong trnh: ng o th. Cap cong trnh: cap III ng cap khu vc. Cap ky thuat: 50 Km/h. Quy mo mat cat ngang: nh bang 10.

Bang 10 Quy mo mat cat ngang ng

No.

Ten ng

Mat ng (m)

Va he (m) (Sidewalk)

Dai phan cach

(m)

Be rong nen ng

(m) Ben trai Ben phai 1 R3 13 8.3 6.8 0 28.1

Tai trong truc xe thiet ke: 120 kN.


IV.3 Yeu cau thiet ke

Cac yeu cau ky thuat, thong so ap dung cho TKBVTC ve nguyen tac tuan theo Tieu chuan Viet Nam. Cac tieu chuan, hng dan, ch dan ky thuat quoc te cung c xem xet tham khao.

IV.3.1 Ket cau nen ng ap

Ket cau nen ap va ao ng khi thiet ke ng tuan theo cac quy nh cua Viet Nam. o day ao ng thiet ke la ~1.0m. Mai doc cua nen ap c thiet ke la 1(V) : 2(H). Pham vi nen ng (ROW) bao gom phan ng xe chay, va he va dai phan cach nh trnh bay trong bang di ay. Cong tac x ly at yeu c thc hien trong pham vi nen ng, khong bao gom pham vi san lap 2 ben. Hnh 6 the hien nen ng ap va pham vi x ly at yeu cho toan d an.

Bang 11 Quy mo mat cat ngang ng

Tuyen Chieu

dai Km

Chieu rong nen ng

m

Chieu rong ng cong

vu m

R3 ng ven ho trung tam

3.06 28.1 B ~ 16.5m

Hnh 6 Ket cau nen ng ap va khu vc x ly

IV.3.2 Cac thong so thiet ke oi vi vat lieu ap va ao ng Cac thong so thiet ke oi vi vat lieu ap va ao ng nh sau: a. Vat lieu ap Khoi lng rieng: 18 kN/m3. Goc ma sat trong: 30 o. Lc dnh: 2.0 kPa. b. Vat lieu ao ng Khoi lng rieng: 22.5 kN/m3. Goc ma sat trong: 40 o. Lc dnh: 0.0 kPa.

y

ROW

B 16.5m

1(V) : 2(H)

1(V) : 2(H)

t yu Khu vc x l

Chieu rong ng


IV.3.3 Mc nc ngam

Da tren cac ket qua nghien cu khao sat trc ay, khu vc chu anh hng cua thuy trieu vi che o ban nhat trieu. Mc nc ngam trong khu vc khi thuy trieu xuong la kha nong t 0m en 3m di cao o mat at. bc TKBVTC mc nc ngam s dung tnh toan bang vi mat at t nhien.

IV.3.4 Tieu chuan ve o lun (1) o lun cho phep

Bang 12 trnh bay ve o lun cho phep, tc la o lun xay ra trong vong 15 nam sau khi hoan tat thi cong ket cau ao ng theo Tieu chuan Viet Nam (22 TCN 211-06, muc 1.3.5), o lun cho phep c nh ngha la t 10-40cm tuy vao cap ng, van toc thiet ke va v tr nen ap tren at yeu.

Tai Nhat, gia tr cua o lun cho phep c quy nh trong Hng dan x ly at yeu cua Hiep hoi ng Nhat Ban (2012). Theo hng dan nay, o lun con lai cho phep tai tim ng ap nam trong khoang t 10cm 30cm trong vong 3 nam nam sau khi hoan tat thi cong ket cau ao ng. Can lu y rang o lun con lai qua ln sau khi thi cong se gay tac ong en cac ket cau xung quanh nen ap va hoat ong giao thong. Do o, e hoat ong giao thong c em thuan va giam tac ong oi vi cac ket cau xung quanh khu vc nen ap, hng dan khuyen ngh giam tong o lun do nen ng gay ra bang cac s dung cac phng phap x ly trong khi thi cong. Hnh 7 trnh bay s o ve moi quan he gia thi gian va o lun.

Bang 12 o lun cho phep* theo Tieu chuan Viet Nam

Cap ng Van toc thiet ke

V tr nen ng ap tren at yeu

Gan mo Cong hoac ng chui oan nen ap thong thng

I, II hoac III 80km/h 10cm 20cm 30cm

III hoac IV < 80km/h 20cm 30cm 40cm

* o lun cho phep la o lun trong vong 15 nam tai tim ng sau khi thi cong xong ket cau ao ng.


Hnh 7 o lun trong mot khoang thi gian nhat nh sau khi thi cong xong ket cau ao ng va o lun con lai trong mot khoang thi gian nhat nh . Trong TKBVTC, o lun cho phep cua nen ng ap c ap dung c ban theo Tieu chuan Viet Nam.

Bang 13 trnh bay o lun nen ng cho phep theo e xuat trong TKBVTC. o lun cho phep e xuat trnh bay trong Bang 13 the hien o lun xuat hien trong vong 15 nam sau khi hoan thanh thi cong ao ng. Nh trnh bay tren, o lun con lai qua ln sau khi hoan thanh thi cong nen ng se tac ong en cac ket cau lan can gan nen ng va hieu qua khai thac. Do o, neu o lun vt mc c d bao da tren ket qua quan trac o lun sau khi hoan thanh cong tac ap th co the thc hien cac phng phap x ly trong thi cong nh chat tai trc va thi cong them coc DSMC.

Bang 13 e xuat o lun cho phep cho nen ng

Tuyen Cap Van toc (km/h) Gan mo Cong hoac

ng chui

oan nen ap thong

thng

R3 III 50 10cm 20cm 40cm

(2) Gia tr cho phep tai cac cao o khac nhau

Trong d an nay, san giam tai c s dung gan mo cau e am bao o on nh cua mo cau. Sau o cac phng phap x ly at yeu khac nh DSMC hoac PVDV c s dung pha sau cau. Can lu y rang co the co

Hon thnh kt cu

o ng, t0 Thi gian nht nh, ti

ln cui cng, Sf

ln khi hon thnh kt cu o ng, S0

ln ti mt thi im nht nh, St

Ti trng xe

1 ln trong 1 khong thi gian nht nh sau khi hon thnh kt cu o ng St = St-S0

2 ln cn li trong mt khong thi gian nht nh Sr = Sf-St

1 ln trong vng 15 nm sau khi thi cng xong kt cu o ng, St15 = St15 S0 2 ln cn li trong 3 nm sau khi thi cng xong kt cu o ng, Sr = Sf St3


s khac nhau ve cao o khu vc ranh gii gia san giam tai va DSMC hoac PVDV. Trong khu vc thi cong PVDV, can phai giam bt o lun con lai do tai trong nen ng va hoat tai sau khi thi cong ket cau ao ng tai cac khu vc ranh gii noi tren. Do o, can phai tien hanh phng phap kiem soat o lun phu hp tai cac khu vc nay. Ngoai ra, e phong tranh chenh lech cao o ln tai khu vc ranh gii gia PVDV va DSMC/san giam tai, viec thi cong PVDV tai cac khu vc ranh gii nay can phai c tien hanh trc khi thi cong DSMC va san giam tai. Nh phan tch di ay, trong khu vc thi cong DSMC, co 2 loai coc DSMC la coc treo va coc chong c s dung trong d an. Coc chong c cam xuong en o sau 0.5m di lp chu lc vi gia tr N cua SPT bang hoac ln hn 8 va c thi cong gan cau va/hoac mo va trong cac khu vc co chieu cao ap ln. o lun coc chong se nho hn 10cm sau khi hoan thanh thi cong ket cau ao ng. Mat khac, coc treo ch cam vao lp set yeu vi khoang cach en lp chu lc (t mui coc DSMC en nh lp chu lc) toi a la 3m. o lun toi a la 40cm co the xuat hien trong coc co khoang cach en lp chu lc la 3m trong vong 15 nam sau khi hoan thanh thi cong ket cau ao ng. Trong trng hp lien ke vi san giam tai th s chenh lech cao o ln co the xuat hien khu vc ranh gii gia san giam tai va coc treo. Chenh lech cao o qua mc co the tac ong en cac phng tien ang di chuyen va tang chi ph bao tr ao ng. e kha nang van hanh cua xe tren ng c em thuan va giam chi ph bao tr ao ng sau khi thi cong, T van e xuat mot khu vc dan vi chieu dai t 40m en 45m trong TKBVTC. Chieu dai coc se c rut ngan dan trong khu vc dan nay.

IV.3.5 He so an toan He so an toan toi thieu cho phan tch o on nh cua mai doc di ay c chon theo tieu chuan Viet Nam (22 TCN 262-2000). Giai oan thi cong: 1.2 Giai oan khai thac: 1.4 Kiem tra ong at: >1.0 (he so nay khong e cap trong

22TCN 262-2000, LDTV tham khao tieu chuan Nhat Ban Hng dan cho thiet ke x ly nen cua Hiep hoi ng bo Nhat Ban thang 11/1986).


IV.3.7 Hoat tai Theo Tieu chuan Viet Nam 22TCN262-2000, hoat tai c chon e phan tch o lun va o on nh mai doc nh sau:

Bang 14 Hoat tai e phan tch o lun va o on nh mai doc

IV.3.8 Tai trong ong at Theo 22TCN 262-2000, tai trong ong at c xem xet trong kiem tra on nh mai doc cho nen ng trong khu vc co cap ong at ln hn cap 6. Theo Tieu chuan thiet ke cong trnh chu ong at TCXDVN 375 : 2006, khu vc Quan 2 TP.HCM co he so gia toc nen a = 0.0856 va cap ong at cap 7 theo thang MSK-64. Can c ieu II.4.4 22TCN 262-2000, he so ty le khi xem xet lc quan tnh do ong at cho ong at cap 7 Kc = 0.025. He so Kc c xem xet trong phan tch on nh mai doc bang chng trnh SLOPE/W phien ban 7.14. Tai trong ong at la lc quan tnh do ong at cua ban than khoi trt, lc nay ty le thuan vi ban than khoi trt: Trong o: Wi: Lc ong at tac dung tren moat manh trt i, Wi co iem at la trong tam manh va co phng nam ngang t pha trong nen ng ra pha ngoai mai taluy nen ap; Qi: Trong lng cua manh trt i;

Kc: he so ty le tuy thuoc cap ong at;

IV.3.9 Thi gian thi cong x ly at yeu Thi gian thi cong x ly at yeu c xac nh la 01 nam, da tren tien o xay dng cua toan D an la 03 nam.


V THIET KE X LY NEN AT YEU CHO TUYEN R3

V.1 X ly nen bang DSMC

V.1.1 Giai phap ket cau Tru at gia co ximang (DSMC):

ng knh tru: 800mm, cng o coc thiet ke 800kPa. Khoang cach tru c bo tr theo nguyen tac tng ng vi chieu

cao nen ap nh bang sau:

Bang 15 Bo tr khoang cach coc DSMC Chieu cao ap

(m) He so cai tao

ap (%) ng knh coc

(m) Khoang cach

(m) < 4.0m 15.5 0.8 1.80

4.0m~5.0m 17.4 0.8 1.70 5.0m~6.0m 19.6 0.8 1.60

> 6.0m 22.3 0.8 1.50


Hnh 8 S o khoi chu trnh thiet ke DSMC

BT U

Nghin cu ln v n nh mi dc ca t cha x l

Tiu ch thit k

H s an ton 1.4

Nghin cu t x l (DSMC)

Chiu cao p, H Thi cng T Tiu ch thit k H s an ton, FS ln cho php, S trong 15 nm La chn thng s thit k

La chn m hnh phn tch

Ch dn k thut cho DSMC H s ci to, su, cng cc, v.v..

Phn tch n nh mi dc FS1.4

Tnh ton ln S ln cho php

B phn p Chiu cao (h) & Chiu rng

Ln lch S ln cho php S dng m ct ci thin t

nng (SSIM) B dy, cng

Kim tra ng sut bn trong Ct thng, ng sut un

iu kin thit k

KT THC

Kim tra ng sut trong ca

DSMC ng sut trong Cng thit

k

Ti xc nh cng cc

KT THC

C

Khng

C

Khng

C

C

Khng

C Khng

C

Khng

Khng


V.1.2 anh gia chi tiet ve on nh va lun cua nen cha x ly bang DSMC

V.1.2.1 anh gia chi tiet nen cha x ly Trong phan nay se tien hanh cac phan tch chi tiet oi vi ieu kien at cha x ly. Cho thay s can thiet phai ap dung cac giai phap x ly nen nham at c cac yeu cau chu chot sau:

V.1.2.2 Phan tch on nh mai doc anh gia o on nh tai cac mat cat tnh toan thong qua he so on nh trt. Kha nang mat on nh trt la co the xay ra do phan nen 02 mai ta luy nam ngoai pham vi x ly. ay la tieu ch e e xuat bien phap x ly bo sung, nh s dung be phan ap. Cac phan tch ve o on nh mai doc c thc hien da tren Phng phap Bishop ieu chnh bang cach s dung mot chng trnh on nh mai doc do Geo Studio phat trien, goi la SLOPE/W phien ban 7.14. Trong TKBVTC, nen ng ap trong pham vi nen ng c bang coc DSMC hoac PVDV, hai khu vc cng v hai ben ngoai pham vi nen ng khong c x ly at yeu. Can lu y rang o on nh cua hai khu vc hai ben can phai c am bao trong ieu kien at cha c x ly. T van a d tnh chieu cao nen ap gii han tai thi iem nay. Nen ap hnh thang vi mai doc 1(V) : 2(H) c gia nh khi nghien cu chieu cao ap gii han. Hnh 10 the hien moi quan he gia chieu cao nen ng ap va he so an toan trong ieu kien at cha x ly. T ket qua phan tch o on nh mai doc, can phai co chieu cao nen ng ap toi a la 2.1 e co c he so an toan theo yeu cau la 1.4.

Hnh 9 Moi quan he gia chieu cao nen ap H va he so an toan Fs


V.1.2.3 Tnh toan o lun Bao gom o lun tc thi va o lun co ket theo thi gian. Ket qua tnh toan o lun cho thay s can thiet phai x ly nen nham at cac yeu cau ky thuat ong thi e so sanh hieu qua cua giai phap x ly khi dung DSMC.

Ket qua tnh toan o lun xem Bang tong hp ket qua tnh toan phan DSMC.

V.1.3 anh gia chi tiet nen sau khi x ly Thoa man cac yeu cau thiet ke at ra theo 02 tieu ch ve On nh trt va o lun.

V.1.3.1 Phan tch on nh mai doc Khi phan tch tong quan ve o on nh va o lun cua nen ng ap, khu vc at a x ly phai c xem la mot khoi lien hp. Cng o khang cat cua at a x ly co the c bieu dien bang he so cai tao ap nh sau:

. + 1 . Trong o, Ceq : Cng o khang cat cua at a x ly

Ccol : Cng o khang cat cua coc at xi mang

Csoil : Cng o khang cat cua at cha x ly

ap : He so cai tao Cac phan tch o on nh cua mai doc trong ieu kien at a x ly c tien hanh bang cach ap dung cng o khang cat cua at a x ly nh tren. Thoa man he so an toan theo yeu cau la FS=1.4.

V.1.3.2 Tnh toan o lun Phng phap phan tch o lun cho coc DSMC cung tng t nh phng phap ap dung cho mong coc. Gia nh rang tai trong c truyen en ay coc, sau o tai trong c phan bo thanh 1(H) : 2(V) va truyen xuong lp at chu lc vi gia tr N cua SPT ln hn 8. Tat ca cac mo hnh phan tch eu thoa man tieu ch o lun bao gom ca lun lech.

V.1.4 Kiem toan lp em au coc at xi mang Phan nen ng chnh au coc DSMC c tang cng bang lp em cat gia co xi mang. Chieu day va cng o lp SSIM c kiem tra ng suat choc thung va ng suat uon.

V.1.5 Bo tr va kiem toan lp bn be tong C10 Phan nen ng di le bo hanh tren au coc DSMC c tang cng bang lp ban be tong C10. Chieu day va cng o lp ban be tong c kiem tra ng suat choc thung va ng suat uon.


V.2 X ly nen bang bac tham ket hp bm hut chan khong (PVDV)

V.2.1 Giai phap x ly PVDV Khoang cach bo tr: dang tam giac, @ 0.9m. Chieu sau cam bac tham: Chieu sau cam PVD da tren nguyen tac sau: chieu dai bac tham c thiet ke theo ieu kien a chat ben di lp at yeu, bac tham c cam xuong en ay cua lp at yeu khi ieu kien a chat di lp at yeu la set cng en na cng va ket thuc tai iem 2m tren ay cua lp set yeu neu a chat ben di lp at yeu la lp cha nc nh soi hoac cat. Chieu rong bo tr tren mat cat ngang: bo tr trong pham vi ROW.

Chieu cao ap gia tai, d tai, bu lun; o lun tnh toan, bu lun the hien trong bang tong hp ket qua x ly nen phan PVDV.

Ap lc hut chan khong: Ap lc hut chan khong can thiet la > 60kPa e cai thien toan khoi, cu the la phai duy tr ap lc hut chan khong la 60kPa trong cac khoi at gia cac bac tham. Ap lc chan khong tai au bm la 90kPa.

Gia tai trc: e giam thieu thi gian bm hut bang ap lc hut chan khong va thuc ay o lun co ket, tien hanh chat tai trc, bao gom ca chat tai nen ng ap. Ty le chat tai c gia nh la 10cm moi ngay cho en khi at c toan bo ap lc hut chan khong theo tnh toan. Thi gian bm hut c gia nh la 6 thang. Sau o mc o co ket di ap lc hut chan khong va chat tai se la 90% tai thi iem at c o lun yeu cau.

V.2.2 Thiet ke PVDV Mc o co ket khi ap dung phng phap PVDV c c tnh theo li giai can bang bien dang cua Barron va phng trnh cua Carrilo.

1 1 1 1 8 ! " #$%

trong o,

&&&&& : o co ket n hong trung bnh &&& : o co ket trung bnh khi ch co thoat nc thang ng &&&& : o co ket trung bnh khi ch co dong chay li tam t : thi gian

: yeu to thi gian cua dong chay li tam F : he so


Ch : He so co ket ngang (gia nh rang Ch=2Cv)

Trong thiet ke PVDV, mc o co ket thang ng, b bo qua v quan iem an toan, nh vay, o co ket se nh sau:

1 1 Hansbo(1979) a ieu chnh phng trnh do Barron phat trien cho viec ng dung bac tham. Cac ieu chnh nay chu yeu giai quyet cac gia thuyet n gian hoa do cac kch thc vat ly, cac ac tnh cua bac tham va viec cam bac tham hu hieu. T phng trnh ieu chnh cua Hansbo, he so F trong phng trnh tren bao gom cac thanh phan di ay co xem xet en hieu ng cua khu vc x ly va sc khang gieng thoat.

! !'() + !* + !+ !'() ,( - $$./

34

!* 22 1" ,( -$*$./

!+ 34'5 4) 267

Trong o, ng knh bac tham tng ng, dw = 0.066m (gia nh)

de : ng knh xi lanh at tng ng, de=0.95m

dw = 1.13 x D cho bo tr bac tham hnh vuong, 1.05 x D cho bo tr bac tham hnh tam giac

D : khoang cach cam bac tham

ds/dw =2 theo khuyen ngh cua Hansbo (1979)

V.2.3 Tnh toan o lun (1) Lun co ket s cap

o lun co ket cua lp set yeu c tnh bang cach s dung cac cong thc di ay:

8 91 + : < ,=>: +

: ': + AB :) 8 91 + : < ,=>

AB :: +

1 + : < ,=>

: + AB : ': + > AB :)

Trong o,

Sc : Lun co ket cua lp set yeu, m

Cc : Ch so nen ep

Cr : Ch so nen hoi phuc


e0 : He so rong ban au

p0 : Ap lc tien co ket hu hieu, kPa

p : ng suat nen do ng suat thang ng gay ra tren nen ap, ao ng va tai trong giao thong, kPa

OCR : He so co ket qua o

H : Be day lp co ket, m

(2) Lun th cap

Co ket s cap se ket thuc khi ap lc nc lo rong sinh ra do tai trong nen ap va hoat tai a on nh. Sau khi lun co ket s cap ket thuc, at se tiep tuc b nen vi ty le thap hn. Hien tng nen at nh vay c goi la o lun th cap. o lun th cap khong phat sinh do phan tan ap lc nc lo rong ma do s tai bo tr cham cua cac thanh phan hat mn va v cac l do khac. Lun th cap co the c tnh theo cong thc di ay:

8 D1 + : #

#

Trong o,

Ss : Lun th cap,

C : Ch so lun th cap

H : Be day at co ket

t : Thi gian

tp : Thi gian ket thuc lun co ket s cap

Ch so lun th cap Ca co the c c tnh nh trong Bang 19. Gia tr C/Cc = 0.05 c ap dung da tren ieu kien set yeu trong khu vc d an.

Bang 16 Ch so lun th cap C

Vat lieu C/Cc

at dang hat, bao gom a o 0.020.01

a phien, at bun 0.030.01

Set vo c va bui 0.040.01

Set hu c va bui 0.050.01

Bot than bun va muskeg 0.060.01

* Cc: Ch so nen


Khoi lng lun th cap oi khi rat ln do no keo dai lien tuc trong mot khoang thi gian dai. ac biet la lp set yeu x ly bang phng phap PVDV co the gay ra lun th cap ln do o lun co ket s cap a ket thuc sm do o lun c thuc ay bang phng phap PVDV. e giam o lun th cap sau lun co ket s cap, lp at yeu se c chat qua tai tam thi e tao ra lp set qua co ket nhe. Do o, gia tr C co the c gia nh la C = 0.05Cr (trong o Cr la ch so nen lai).

(3) Lun tc thi

Lun tc thi cua lp cat co the c tnh bang cach ap dung cong thc di ay:

8 E HI

JK

Trong o,

Si : Lun tc thi cua lp at ben di lp set yeu, m

hi : Be day moi lp, m

Ei : Moun bien dang cua at, kPa

V.2.4 c tnh cng o khang cat at c trong thi gian hut chan khong va gia tai Cng o cat khong thoat nc, cu, at c trong qua trnh hut chan khong va chat tai se c c tnh da tren phng phap SHANSEP (Ladd va Foott, 1974) theo cong thc di ay:

LM 8'AB)

O =+ LM 8'AB)O

Trong o, M: : Ap lc tien co ket hu hieu, kPa OCR : He so qua co ket S : mc o tang sc khang cat khong thoat nc m : He so, 0.8

Cong thc di ay c ap dung khi ng suat hu hieu thang ng ln hn ap lc tien co ket cua no, tc la at trong trang thai co ket bnh thng.

LM 8 , L 8M

Cng o khang cat khong thoat nc trung bnh, cu, vi a va b nh trong Hnh 11 c s dung nh la gia tr cu ai dien trong khu vc a x ly, KHU VC (A).


Hnh 10 S o c tnh cng o khang cat khong thoat nc thu c

V.2.5 Phan tch o on nh mai doc ng vi cng o khang cat d kien at c trong qua trnh hut chan khong va chat tai Phan tch o on nh mai doc c tien hanh tai giai oan ti han sau khi at c o day ap toi a va he so an toan toi thieu c quy nh la 1.2. Cng o khang cat khong thoat nc tang len do co ket c dung trong phan tch o on nh mai doc. o day ap tai giai oan ti han la o day ap toi a bao gom be day ap chat tai trc. Neu cac ket qua phan tch o on nh mai doc khong am bao c he so an toan la 1.2 th phai s dung be phan ap tam. Cuoi cung, phan tch o on nh mai doc se c tien hanh vi be day ap sau khi thi cong ao ng e at c he so an toan la 1.4 trong giai oan khai thac.

ROW ng cng v

(16.5m) ng cng v

(16.5m)

KHU VC (a) KHU VC (b) KHU VC (b)

t ban u t ban u

a b


Hnh 11 Lu o thiet ke PVDV

BT U

Nghin cu v ln v n nh mi dc trong iu kin t cha x l

Tiu ch thit k

H s an ton 1.4

Nghin cu t x l (PVDV)

Chiu cao p, H Thi cng T Tiu ch thit k

H s an ton, FS ln cho php S trong 15 nm La chn thng s a cht cho thit k

La chn m hnh phn tch

Thng s k thut cho PVDV, khong cch, p lc chn khng, ln mc tiu

Phn tch n nh mi dc

FS1.2 Ngay sau khi hon thnh cng tc p

Cht ti thm

Cc rng buc thit k

KT THC

C

Khng

C

Khng

Khng

*c xt n cng chu ct t c do c kt

Tnh ton ln khi cht ti trc

t c ln mc tiu trong vng 6 thng?

B phn p (Tm)

Phn tch n nh mi dc

FS1.4 chiu cao p sau khi hon thnh o ng

B phn p (Vnh vin)

Khng

KT THC

C

C


V.2.6 anh gia chi tiet ve on nh va lun cua nen cha va sau khi x ly bang PVDV

V.2.6.1 anh gia chi tiet nen cha x ly Trong phan nay se tien hanh cac phan tch chi tiet oi vi ieu kien at cha x ly. Cho thay s cn thiet phai ap dung cac giai phap x ly nen nham at c cac yeu cau chu chot sau:

(1) Phan tch on nh mai doc

anh gia o on nh tai cac mat cat tnh toan thong qua he so on nh trt. Kha nang mat on nh trt la co the xay ra trong phan nen ng va 02 mai ta luy ng trong qua trnh ap gia tai hay khai thac cong trnh sau nay.

He so on nh trt yeu cau toi thieu la: 1.2 trong giai oan xay dng va 1.4 trong giai oan hoan thien va khai thac.

ay la tieu ch e e xuat bien phap x ly bo sung, nh s dung be phan ap tam thi hay be phan ap vnh cu nham at c yeu cau ve on nh trt.

(2) Tnh toan o lun

Bao gom o lun tc thi, o lun co ket theo thi gian. Ket qua tnh toan o lun cho thay s can thiet phai x ly nen nham at cac yeu cau ky thuat ong thi e so sanh hieu qua cua giai phap x ly khi dung PVDV.

V.2.6.2 anh gia chi tiet nen sau khi x ly Thoa man cac yeu cau thiet ke at ra theo 02 tieu ch ve On nh trt va o lun.

(1) Phan tch on nh mai doc

Cac phan tch o on nh cua mai doc trong ieu kien at a x ly c tien hanh bang cach ap dung cng o khang cat gia tang cua at trong qua trnh x ly nh a trnh bay tren. Thoa man he so an toan theo yeu cau la FS=1.4.

(2) Tnh toan o lun theo thi gian

Bao gom cac tnh toan o lun theo thi gian trong qua trnh x ly nen tng ng vi cap ap lc hut chan khong, chieu cao gia tai, thi gian gia tai, chieu day d tai. Vi muc tieu la o lun con lai cua nen yeu trong 15 nam sau khi hoan thanh thoa man yeu cau. Cac ket qua tnh toan d bao o lun trong qua trnh thi cong x ly nen va ket qua quan trac, theo doi tai hien trng la c s e anh gia hieu qua cua bien phap x ly. T o, Ky s T van Giam sat se quyet nh cong tac x ly nen tren tong the toan tuyen hay tai cac v tr cuc bo at hay khong at yeu cau e trien khai cac cong tac thiep theo hoac co cac bien phap x ly bo sung phu hp.

APPENDIX A

Summary of Soil Properties for Design

Relationship between depth and index properties (FC, Wn, Ip, e0, t) and shear strength (cu)

1a and 1b layer at AREA (A)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80 100

Ele

va

tio

n,

m

FC(%)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80 100 120

Ele

va

tio

n,

m

Wn(%)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80

Ele

va

tio

n,

m

IP

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 1 2 3 4

Ele

va

tio

n,

m

e0

-40

-35

-30

-25

-20

-15

-10

-5

0

5

12 14 16 18

Ele

va

tio

n,

m

t(kN/m3)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80

Ele

va

tio

n,

m

cu (kN/m2)

cu=10.5+1.0z kPa

cu=10.5+1.0z kPa

e0=2.45

e0=2.40

e0=1.95

t=14.6

t=15.5

t=14.4IP=58

IP=55

IP=48

Wn=100

Wn=90

Wn=75

Wn=65 IP=40e0=1.85

Wn=80 IP=50 e0=2.05t=15.0

t=16.0

Clay A-1

Clay A-2

Clay A-3

Clay A-4

Clay A-5

cu=10.5Clay A-0

1a

1b

1a(UU Test)

1b(UU Test)

VST

Relationship between depth and Consolidation properties

1a and 1b layer at AREA (A)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 50 100 150 200 250 300

Ele

va

tio

n,

m

Pc(kN/m2)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0.00 0.50 1.00 1.50 2.00

Ele

va

tio

n,

mCc

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.1 0.2 0.3 0.4 0.5

Ele

va

tio

n,

m

Cr

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0.5 1 1.5 2 2.5 3

Ele

va

tio

n,

m

OCR

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.1 0.2 0.3 0.4 0.5 0.6

Ele

va

tio

n,

m

Cc/(1+e0)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.05 0.1 0.15

Ele

va

tio

n,

m

Cr/(1+e0)

Cc=1.1

Cc=1.02 Cr=0.19

Cr=0.20

Cr=0.220

OCR=1.2

OCR=1.00

OCR=1.00

OCR=1.2

Cc=1.08

Cc=1.10 OCR=1.00

OCR=1.00

Cc=1.15

Cr=0.220

Cr=0.220

Clay A-1

Clay A-2

Clay A-4

Clay A-5

Clay A-0

Clay A-3

1a

1b

0.1

1.0

10.0

1 10 100 1000

Cv,

m2/y

ear

P, kN/m2

0.1

1.0

10.0

1 10 100 1000

Cv,

m2/y

ear

P, kN/m2

0.1

1.0

10.0

1 10 100 1000

Cv,

m2/y

ear

P, kN/m2

0.1

1.0

10.0

1 10 100 1000

Cv,

m2/y

ear

P, kN/m2

Cv=0.8m2/year

Cv=0.8m2/year

Cv=0.8m2/year

Cv=0.8m2/year

Clay A-1

Clay A-2

Clay A-3

Clay A-4


1a and 1b layer at AREA (B)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80 100

Ele

va

tio

n,

mFC(%)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80 100 120

Ele

va

tio

n,

m

Wn(%)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80

Ele

va

tio

n,

m

IP

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 1 2 3 4

Ele

va

tio

n,

m

e0

-40

-35

-30

-25

-20

-15

-10

-5

0

5

12 14 16 18

Ele

va

tio

n,

m

t(kN/m3)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80

Ele

va

tio

n,

m

cu (kN/m2)

cu=10.5kPa

cu=10.5+1.0z kPa

cu=10.5+1.0z kPa

cu=10.5+1.0z kPa

e0=2.20

t=15.6

IP=58

IP=54Wn=85 t=15.0

Wn=90

Wn=70IP=42

e0=2.40

e0=1.95

t=14.8Clay B-1

Clay B-2

Clay B-3

Clay B-0

1a

1b

1a(UU Test)

1b(UU Test)

VST


1a and 1b layer at AREA (B)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 50 100 150 200 250 300

Ele

va

tio

n,

m

Pc(kN/m2)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0.00 0.50 1.00 1.50 2.00

Ele

va

tio

n,

mCc

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.1 0.2 0.3 0.4 0.5

Ele

va

tio

n,

m

Cr

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0.5 1 1.5 2 2.5 3

Ele

va

tio

n,

m

OCR

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.1 0.2 0.3 0.4 0.5 0.6

Ele

va

tio

n,

m

Cc/(1+e0)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.05 0.1 0.15

Ele

va

tio

n,

m

Cr/(1+e0)

Cc=1.15

Cc=0.90 Cr=0.15

OCR=1.15

Cc=0.90

Cr=0.18 OCR=1.45

Cr=0.15 OCR=1.15

Clay B-1

Clay B-2

Clay B-3

Clay B-0

1a

1b

0.1

1.0

10.0

1 10 100 1000

Cv,

m2/y

ear

P, kN/m2

0.1

1.0

10.0

1 10 100 1000

Cv,

m2/y

ear

P, kN/m2

0.1

1.0

10.0

1 10 100 1000

Cv,

m2/y

ear

P, kN/m2

Cv=1.0m2/year

Clay B-1

Cv=1.0m2/year

Clay B-2

Cv=1.0m2/year

Clay B-3


1a and 1b layer at AREA (C)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80 100

Ele

va

tio

n,

mFC(%)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80 100 120

Ele

va

tio

n,

m

Wn(%)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80

Ele

va

tio

n,

m

IP

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 1 2 3 4

Ele

va

tio

n,

m

e0

-40

-35

-30

-25

-20

-15

-10

-5

0

5

12 14 16 18

Ele

va

tio

n,

m

t(kN/m3)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80

Ele

va

tio

n,

m

cu (kN/m2)

cu=10.5kPa

cu=10.5+1.0z kPa

cu=10.5+1.0z kPa

cu=10.5+1.0z kPa

e0=2.10

IP=55

IP=50Wn=78 t=15.2

Wn=90

e0=2.35

t=14.6

Clay C-1

Clay C-2

Clay C-0

1a

1b

1a(UU Test)

1b(UU Test)

VST


1a and 1b layer at AREA (C)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 50 100 150 200 250 300

Ele

va

tio

n,

m

Pc(kN/m2)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0.00 0.50 1.00 1.50 2.00

Ele

va

tio

n,

mCc

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.1 0.2 0.3 0.4 0.5

Ele

va

tio

n,

m

Cr

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0.5 1 1.5 2 2.5 3

Ele

va

tio

n,

m

OCR

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.1 0.2 0.3 0.4 0.5 0.6

Ele

va

tio

n,

m

Cc/(1+e0)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.05 0.1 0.15

Ele

va

tio

n,

m

Cr/(1+e0)

Cc=0.92

Cc=0.85 Cr=0.145 OCR=1.10

Cr=0.16OCR=1.25

Clay C-1

Clay C-2

Clay C-0

1a

1b

0.1

1.0

10.0

1 10 100 1000C

v, m

2/y

ear

P, kN/m2

0.1

1.0

10.0

1 10 100 1000

Cv,

m2/y

ear

P, kN/m2

Cv=0.8m2/year

Clay C-1

Clay C-2

Cv=0.6m2/year


1a and 1b layer at AREA (D)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80 100

Ele

va

tio

n,

mFC(%)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80 100 120

Ele

va

tio

n,

m

Wn(%)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80

Ele

va

tio

n,

m

IP

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 1 2 3 4

Ele

va

tio

n,

m

e0

-40

-35

-30

-25

-20

-15

-10

-5

0

5

12 14 16 18

Ele

va

tio

n,

m

t(kN/m3)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80

Ele

va

tio

n,

m

cu (kN/m2)

cu=10.5kPa

cu=10.5+1.0z kPa

cu=10.5+1.0z kPa

cu=10.5+1.0z kPa

e0=1.72IP=40Wn=65 t=15.8

IP=35 e0=1.60 t=16.2Wn=58

Clay D-1

Clay D-2

Clay D-3

Wn=82 IP=51e0=2.15

t=15.0

Clay D-0

1a

1b

1a(UU Test)

1b(UU Test)

VST


1a and 1b layer at AREA (D)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 50 100 150 200 250 300

Ele

va

tio

n,

m

Pc(kN/m2)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.5 1 1.5 2

Ele

va

tio

n,

mCc

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.1 0.2 0.3 0.4 0.5

Ele

va

tio

n,

m

Cr

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0.5 1 1.5 2 2.5 3

Ele

va

tio

n,

m

OCR

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.1 0.2 0.3 0.4 0.5 0.6

Ele

va

tio

n,

m

Cc/(1+e0)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.05 0.1 0.15

Ele

va

tio

n,

m

Cr/(1+e0)

Cc=1.15

Cc=0.95

Cc=0.65

Cr=0.21

Cr=0.20

Cr=0.13

OCR=1.20

OCR=1.20

OCR=1.10

Clay D-1

Clay D-2

Clay D-3

Clay D-0

1a

1b

0.1

1

10

1 10 100 1000

Cv,

m2

/ye

ar

P, kN/m2

0.1

1

10

1 10 100 1000

Cv,

m2

/ye

ar

P, kN/m2

0.1

1

10

1 10 100 1000

Cv,

m2

/ye

ar

P, kN/m2

Clay D-1

Cv=0.6m2/year

Clay D-2

Cv=0.8m2/year

Clay D-3

Cv=1.0m2/year


1a and 1b layer at AREA (E)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

80 100

Ele

va

tio

n,

mFC(%)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80 100 120

Ele

va

tio

n,

m

Wn(%)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80

Ele

va

tio

n,

m

IP

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 1 2 3 4

Ele

va

tio

n,

m

e0

-40

-35

-30

-25

-20

-15

-10

-5

0

5

12 14 16 18

Ele

va

tio

n,

m

t(kN/m3)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 20 40 60 80

Ele

va

tio

n,

m

cu (kN/m2)

cu=10.5kPa

cu=10.5+1.0z kPa

cu=10.5+1.0z kPa

e0=2.45

IP=60

IP=50Wn=75

t=14.6Wn=90

e0=2.70t=14.2

e0=1.95

t=15.4

Wn=100

IP=55

Clay E-1

Clay E-2

Clay E-3

Clay E-0

1a

1b

1a(UU Test)

1b(UU Test)

VST


1a and 1b layer at AREA (E)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 50 100 150 200 250 300

Ele

va

tio

n,

m

Pc(kN/m2)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0.00 0.50 1.00 1.50 2.00

Ele

va

tio

n,

mCc

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.1 0.2 0.3 0.4 0.5

Ele

va

tio

n,

m

Cr

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0.5 1 1.5 2 2.5 3

Ele

va

tio

n,

m

OCR

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.1 0.2 0.3 0.4 0.5 0.6

Ele

va

tio

n,

m

Cc/(1+e0)

-40

-35

-30

-25

-20

-15

-10

-5

0

5

0 0.05 0.1 0.15

Ele

va

tio

n,

m

Cr/(1+e0)

Cc=1.30

Cc=1.10 Cr=0.21 OCR=1.25

Cr=0.17 OCR=1.20

Cc=0.9 Cr=015OCR=1.05

Clay E-1

Clay E-2

Clay E-3

Clay E-0

1a

1b

0.1

1.0

10.0

1 10 100 1000

Cv,

m2/y

ear

P, kN/m2

0.1

1.0

10.0

1 10 100 1000

Cv,

m2/y

ear

P, kN/m2

0.1

1.0

10.0

1 10 100 1000

Cv,

m2/y

ear

P, kN/m2

Clay E-1

Cv=1.0m2/year

Clay E-2

Cv=0.9m2/year

Clay E-3

Cv=0.9m2/year

Relationship between depth and index properties (FC, Wn, Ip, e0, t)

3, 5a and TK2 Layer

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0 20 40 60 80 100

Ele

vati

on

, m

FC(%)

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0 20 40 60 80 100 120

Ele

vati

on

, m

Wn(%)

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0 20 40 60 80

Ele

vati

on

, m

IP

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0 1 2

Ele

vati

on

, m

e0

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

16 18 20 22

Ele

vati

on

, m

t(kN/m3)

3: Wn=30

TK2: Wn=30

5a: Wn=25

3: IP=25

TK2: IP=25

5a: IP=20

3: e0=0.9

TK2: e0=0.9

5a: e0=0.6

3: t=19

TK2: t=19

5a: t=20

3

5a

TK1


3, 5a and TK2 Layer

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0 100 200 300 400 500 600

Ele

va

tio

n,

m

Pc(kN/m2)

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0 0.1 0.2 0.3 0.4 0.5 0.6

Ele

va

tio

n,

mCc

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0 0.05 0.1 0.15 0.2

Ele

va

tio

n,

m

Cr

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0.5 1 1.5 2 2.5 3 3.5

Ele

va

tio

n,

m

OCR

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0 0.05 0.1 0.15 0.2 0.25 0.3

Ele

va

tio

n,

m

Cc/(1+e0)

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0 0.05 0.1 0.15

Ele

va

tio

n,

m

Cr/(1+e0)

3: Cc=0.25

TK2: Cc=0.16

5a: Cc=0.16

3: Cr=0.06

TK2: Cr=0.05

5a: Cr=0.05

3: OCR=2.2

TK2: OCR=1.6

5a: OCR=1.6

3

5a

TK1

0.1

1.0

10.0

1 10 100 1000 10000

Cv,

m2/y

ear

P, kN/m2

0.1

1.0

10.0

1 10 100 1000 10000

Cv,

m2/y

ear

P, kN/m2

0.1

1.0

10.0

1 10 100 1000 10000

Cv,

m2/y

ear

P, kN/m2

Cv=1.5m2/year

3 layer

5a layer

TK2 layer

Cv=2.0m2/year

Cv=1.0m2/year

CALCULATION OF DSMC OF R3

SUMMARY TABLE OF SOFT SOIL TREATMENT OF R3 (DSMC SECTION)

Road No Section Finish LevelGround

LevelBottom of Soft Clay

AreaConsolidation

settlementTotal

settlementSettlement of DSMC

F or GSettlement

after 15 years

FS 11)

FS 22)

(m) (m) (m) (m) (m) (m) (cm)1 Km0+120 3.70 1.00 -32.50 A 3.67 4.38 0.16 G 2 1.777 1.5962 Km0+260 3.50 1.00 -30.00 A 3.48 4.16 0.17 G 2 1.897 1.6923 Km0+320 3.55 -1.10 -26.50 A 4.26 4.85 0.25 G 3 2.303 1.9244 Km0+360 3.40 1.25 -24.50 A 3.11 3.77 0.23 G 8 2.762 2.2305 Km0+960 2.70 0.80 -18.00 C 2.14 2.52 0.19 G 2 2.380 2.1516 Km1+800 2.80 -2.00 -15.00 C 2.68 2.93 0.29 G 7 4.091 2.9247 Km1+940 3.05 1.85 -15.00 C 1.73 2.08 0.19 G 4 3.828 3.0678 Km3+040 4.10 0.90 -30.50 B 2.77 3.17 0.31 G 0 2.795 2.300

Note:1) As for service load combination, the required factor of safety is greater than 1.4 according to 22 TCN 262-20002) As for special load combination, the required factor of safety is greater than 1.0 according to Guidelines for Soft ground treatment of JRA, November 1986

R3

Page: 1/1

SECTION: of R3

1. MODEL and PARAMETER for ANALYSIS 1.1 Parameters of Embankment Fill and Pavement Materials

1) Embankment Fill 4) Orginal ground soil Unit Weight 18.0 kN/m3 Unit Weight 15.0 kN/m3

Friction Angle 30 degree Cohesion cu 2 kN/m2

2) Pavement 5) SSIM Unit Weight 22.5 kN/m3 Unit Weight 20.0 kN/m3

Friction Angle 40 degree Thickness 0.7 m Cohesion cu 0 kN/m2

3) Mat Fill 6) Concrete slab Unit Weight 18.0 kN/m3 Unit Weight 22.0 kN/m3

Friction Angle 30 degree Thickness 0.4 m Cohesion cu 2 kN/m2

7) Model of EmbankmentTop of Embankment +3.70 mGround Level +1.00 mTop of DSMC Level (Roadway area) +0.80 mTop of DSMC Level (Sidewalk area) 1 m

W1 28.1 mW2 32.9 m +3.70W3 55.1 mW4 61.1 m +2.50

+1.00h1 1.50 mh2 2.70 mArea of cross section of Fill A P 87.2 m

2 for Mat FillA E 36.6 m

2 for Embankment Fill 1.2 Vertical Stress for Embankment Fill and Pavement

Vertical Stress q P 27.0 kN/m2 for Mat Fill

q E 21.6 kN/m2 for Embankment Fill

q E 4.5 kN/m2 for Add Pavement

Traffic Load + (SSIM or CS) q traffic&SSIM 16.0 kN/m2

Design Load, q 69.1 kN/m2

1.3 Equivalent Height of EmbankmentIn Roadway area In motorbike area In sidewalk area

Plan Height, H 0 = 2.90 m 2.90 m 2.70Surcharge Height for Traffic load, H trafiic = 0.78 m 0.78 m 0.28

Pavement and (SSIM or CS)= 0.33 m 0.33 m 0.33Total Height, H T0 = 4.01 m 4.01 m 3.31

1.4 Traffic Load Traffic Load q traffic 14 kN/m

2

q traffic 5 kN/m2 for sidewalk area

1.5 Ground Water Level Ground Water Level GWL 0 m below Ground Level

ESTIMATED SETTLEMENT FOR DEEP SOIL MIXING COLUMN (DSMC)Km0+120

W1

W2

h1

h2Embankment

Mat Fill

W4

W3

1.6 Soil Parameters Area: ASoil Parameters for each layer are summarized as Table below.

Ground Elevation, EL= +1.00 m Bottome of Soft Clay -32.50 m

Top Bottom Center Top Bottom Center kN/m2 kN/m2 kN/m2

m m m m m m Top Bottom Center m1 1a-0 0.00 1.00 0.50 1.00 0.00 1.50 0 4.4 2.2 1.02 1a-1-1 1.00 3.00 2.00 0.00 -2.00 -1.00 4.4 13.2 8.8 2.03 1a-1-1 3.00 5.00 4.00 -2.00 -4.00 -3.00 13.2 22 17.6 2.04 1a-1-1 5.00 6.00 5.50 -4.00 -5.00 -4.50 22 26.4 24.2 1.05 1a-1-2 6.00 8.00 7.00 -5.00 -7.00 -6.00 26.4 35.2 30.8 2.06 1a-1-2 8.00 10.00 9.00 -7.00 -9.00 -8.00 35.2 44 39.6 2.07 1a-1-2 10.00 11.00 10.50 -9.00 -10.00 -9.50 44 48.4 46.2 1.08 1a-1-3 11.00 13.00 12.00 -10.00 -12.00 -11.00 48.4 57.2 52.8 2.09 1a-1-3 13.00 14.00 13.50 -12.00 -13.00 -12.50 57.2 61.6 59.4 1.010 1a-2 14.00 16.00 15.00 -13.00 -15.00 -14.00 61.6 70.8 66.2 2.011 1a-2 16.00 18.00 17.00 -15.00 -17.00 -16.00 70.8 80 75.4 2.012 1a-2 18.00 20.00 19.00 -17.00 -19.00 -18.00 80 89.2 84.6 2.013 1a-2 20.00 21.00 20.50 -19.00 -20.00 -19.50 89.2 93.8 91.5 1.014 1a-3 21.00 23.00 22.00 -20.00 -22.00 -21.00 93.8 103.8 98.8 2.015 1a-3 23.00 25.00 24.00 -22.00 -24.00 -23.00 103.8 113.8 108.8 2.016 1a-3 25.00 26.00 25.50 -24.00 -25.00 -24.50 113.8 118.8 116.3 1.017 1a-4 26.00 28.00 27.00 -25.00 -27.00 -26.00 118.8 129.8 124.3 2.018 1a-4 28.00 30.00 29.00 -27.00 -29.00 -28.00 129.8 140.8 135.3 2.019 1a-4 30.00 31.00 30.50 -29.00 -30.00 -29.50 140.8 146.3 143.6 1.020 1a-5 31.00 33.00 32.00 -30.00 -32.00 -31.00 146.3 158.3 152.3 2.021 1a-5 33.00 33.50 33.25 -32.00 -32.50 -32.25 158.3 161.3 159.8 0.522 4a 33.50 34.50 34.00 -32.50 -33.50 -33.00 161.3 171.3 166.3 1.023 5a 34.50 36.50 35.50 -33.50 -35.50 -34.50 171.3 191.3 181.3 2.024 5a 36.50 38.50 37.50 -35.50 -37.50 -36.50 191.3 211.3 201.3 2.025 5a 38.50 40.50 39.50 -37.50 -39.50 -38.50 211.3 231.3 221.3 2.026 5a 40.50 41.00 40.75 -39.50 -40.00 -39.75 231.3 236.3 233.8 0.527 0.0028 0.0029 0.0030 0.00

t cu E Cv ChkN/m3 kN/m2 degree kN/m2 m2/yr m2/yr

1 1a-0 Clay 0 14.4 10.5 0 1800 1.1 0.2 2.45 0.32 0.06 1 0.8 1.62 1a-1-1 Clay 0 14.4 10.5+1z 0 2300 1.1 0.2 2.45 0.32 0.06 1.2 0.8 1.63 1a-1-1 Clay 0 14.4 10.5+1z 0 2700 1.1 0.2 2.45 0.32 0.06 1.2 0.8 1.64 1a-1-1 Clay 0 14.4 10.5+1z 0 3000 1.1 0.2 2.45 0.32 0.06 1.2 0.8 1.65 1a-1-2 Clay 0 14.4 10.5+1z 0 3300 1.1 0.2 2.45 0.32 0.06 1.2 0.8 1.66 1a-1-2 Clay 0 14.4 10.5+1z 0 3700 1.1 0.2 2.45 0.32 0.06 1.2 0.8 1.67 1a-1-2 Clay 0 14.4 10.5+1z 0 4000 1.1 0.2 2.45 0.32 0.06 1.2 0.8 1.68 1a-1-3 Clay 0 14.4 10.5+1z 0 4300 1.1 0.2 2.45 0.32 0.06 1.2 0.8 1.69 1a-1-3 Clay 0 14.4 10.5+1z 0 4600 1.1 0.2 2.45 0.32 0.06 1.2 0.8 1.610 1a-2 Clay 0 14.6 10.5+1z 0 4900 1.02 0.19 2.4 0.30 0.06 1 0.8 1.611 1a-2 Clay 0 14.6 10.5+1z 0 5300 1.02 0.19 2.4 0.30 0.06 1 0.8 1.612 1a-2 Clay 0 14.6 10.5+1z 0 5700 1.02 0.19 2.4 0.30 0.06 1 0.8 1.613 1a-2 Clay 0 14.6 10.5+1z 0 6000 1.02 0.19 2.4 0.30 0.06 1 0.8 1.614 1a-3 Clay 0 15 10.5+1z 0 6300 1.08 0.22 2.05 0.35 0.07 1 0.8 1.615 1a-3 Clay 0 15 10.5+1z 0 6700 1.08 0.22 2.05 0.35 0.07 1 0.8 1.616 1a-3 Clay 0 15 10.5+1z 0 7000 1.08 0.22 2.05 0.35 0.07 1 0.8 1.617 1a-4 Clay 0 15.5 10.5+1z 0 7300 1.15 0.22 1.95 0.39 0.07 1 0.8 1.618 1a-4 Clay 0 15.5 10.5+1z 0 7700 1.15 0.22 1.95 0.39 0.07 1 0.8 1.619 1a-4 Clay 0 15.5 10.5+1z 0 8000 1.15 0.22 1.95 0.39 0.07 1 0.8 1.620 1a-5 Clay 0 16 10.5+1z 0 8300 1.15 0.22 1.85 0.40 0.08 1 0.8 1.6

Cr/(1+e0)

e0Cc CrCc/

(1+e0)

No

No LayerN

value

Thickness

SoilType

LayerDepth Elevation v'

OCR

21 1a-5 Clay 0 16 10.5+1z 0 8550 1.15 0.22 1.85 0.40 0.08 1 0.8 1.622 4a Sand 15 20 0 30 22500 - - - - - - - -23 5a Clay 30 20 5N 0 30000 0.16 0.05 0.6 0.10 0.03 1.6 2 424 5a Clay 30 20 5N 0 30000 0.16 0.05 0.6 0.10 0.03 1.6 2 425 5a Clay 30 20 5N 0 30000 0.16 0.05 0.6 0.10 0.03 1.6 2 426 5a Clay 30 20 5N 0 30000 0.16 0.05 0.6 0.10 0.03 1.6 2 427282930

2. CALCULATION OF SETTLEMENT FOR NON IMPROVEMENT SOIL 2.1 Settlement Analysis

1) Calculation Formula of Settlement a) Consolidation Settlement The Consolidation Settlement of Soft Clay Layers is calculated using the following formula:

Where, Sc Consolidation Settelment of Soft Clay Layer, mCc : Compression IndexCr : Recompression Indexe0 : Initial Void Ratiop0 : Effective orverburden Pressure, kPap : Compressive Stress due to vertical Stress for Embankment Fill, Pavement and Traffic Load, kPa

OCR : Over Consolidation RatioH : Thickness of Consolidation Layer, m

b) Immediate Settlement The Immediate Settlement of Soil Layer below Sot Clay Layer is calculated using the following formula:

Where, Si Immediate Settelment of Soil Layer below Soft Clay Layer, mhi Thickness of each layer, mEi Deformation Modulus of Soil, kPa

2) Calculation of vertical stress increment dur to surcharge load , p The vertical stress increment, p is calculated using Osterberg's Influence Chart for a Semi-Embankment Loading

= 1 + + ( + )= _ /(1+ _0 ) _0/ _0 + _ /(1+ _0 ) ( _0+ )/( _0 ) ( _0+ > _0)

=

2.2 Results of Settlement Analysis1) Settlement Calculation Results (not consider buoyancy) The Consolidation Settlement is calculated the following points.

XP

YP

XP H Sc Si Ttotalm m m m m

1 0.0 2.70 3.67 0.00 3.672 7.0 2.70 3.59 0.00 3.593 14.1 2.70 3.19 0.00 3.204 16.5 1.50 2.73 0.00 2.735 22.0 1.50 2.19 0.00 2.196 27.6 1.50 1.69 0.00 1.697 30.6 0 0.84 0.00 0.848 45.0 0 0.17 0.00 0.179 50.0 0 0.12 0.00 0.1210 60.0 0 0.06 0.00 0.06

Center

NO.

XP1

XP2 XP3

XP4 XP5 XP6

XP7 XP8 XP9 XP10

0.00

0.50

1.00

1.50

2.00

2.50

3.00

0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0

Emba

nkm

ent H

eigh

t H, m

XP (m)

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0

Emba

nkm

ent H

eigh

t H, m

XP (m)

Immediate Settlement SiConsolidation Settlement ScTotal Settlement Sc

XP1= 0.0 mv'

Top Bottom Center kN/m2

m m m m m Center kN/m2 kN/m2 m m1 1a-0 0.5 0.0 1.0 0.5 1.0 2.2 69.1 1800 1.10 0.20 2.45 1.00 0.48 -2 1a-1-1 2.0 1.0 3.0 2.0 2.0 8.8 69.1 2300 1.10 0.20 2.45 1.20 0.56 -3 1a-1-1 4.0 3.0 5.0 4.0 2.0 17.6 68.8 2700 1.10 0.20 2.45 1.20 0.40 -4 1a-1-1 5.5 5.0 6.0 5.5 1.0 24.2 68.3 3000 1.10 0.20 2.45 1.20 0.17 -5 1a-1-2 7.0 6.0 8.0 7.0 2.0 30.8 67.6 3300 1.10 0.20 2.45 1.20 0.28 -6 1a-1-2 9.0 8.0 10.0 9.0 2.0 39.6 66.2 3700 1.10 0.20 2.45 1.20 0.23 -7 1a-1-2 10.5 10.0 11.0 10.5 1.0 46.2 65.0 4000 1.10 0.20 2.45 1.20 0.10 -8 1a-1-3 12.0 11.0 13.0 12.0 2.0 52.8 63.6 4300 1.10 0.20 2.45 1.20 0.18 -9 1a-1-3 13.5 13.0 14.0 13.5 1.0 59.4 62.0 4600 1.10 0.20 2.45 1.20 0.08 -10 1a-2 15.0 14.0 16.0 15.0 2.0 66.2 60.5 4900 1.02 0.19 2.40 1.00 0.17 -11 1a-2 17.0 16.0 18.0 17.0 2.0 75.4 58.3 5300 1.02 0.19 2.40 1.00 0.15 -12 1a-2 19.0 18.0 20.0 19.0 2.0 84.6 56.1 5700 1.02 0.19 2.40 1.00 0.13 -13 1a-2 20.5 20.0 21.0 20.5 1.0 91.5 54.5 6000 1.02 0.19 2.40 1.00 0.06 -14 1a-3 22.0 21.0 23.0 22.0 2.0 98.8 52.9 6300 1.08 0.22 2.05 1.00 0.13 -15 1a-3 24.0 23.0 25.0 24.0 2.0 108.8 50.8 6700 1.08 0.22 2.05 1.00 0.12 -16 1a-3 25.5 25.0 26.0 25.5 1.0 116.3 49.4 7000 1.08 0.22 2.05 1.00 0.05 -17 1a-4 27.0 26.0 28.0 27.0 2.0 124.3 47.9 7300 1.15 0.22 1.95 1.00 0.11 -18 1a-4 29.0 28.0 30.0 29.0 2.0 135.3 46.1 7700 1.15 0.22 1.95 1.00 0.10 -19 1a-4 30.5 30.0 31.0 30.5 1.0 143.6 44.8 8000 1.15 0.22 1.95 1.00 0.05 -20 1a-5 32.0 31.0 33.0 32.0 2.0 152.3 43.5 8300 1.15 0.22 1.85 1.00 0.09 -21 1a-5 33.3 33.0 33.5 33.3 0.5 159.8 42.5 8550 1.15 0.22 1.85 1.00 0.02 -22 4a 34.0 33.5 34.5 34.0 1.0 166.3 41.9 22500 - - - - 0.00 0.00223 5a 35.5 34.5 36.5 35.5 2.0 181.3 40.8 30000 0.16 0.05 0.60 1.60 0.01 -24 5a 37.5 36.5 38.5 37.5 2.0 201.3 39.3 30000 0.16 0.05 0.60 1.60 0.00 -25 5a 39.5 38.5 40.5 39.5 2.0 221.3 38.0 30000 0.16 0.05 0.60 1.60 0.00 -26 5a 40.8 40.5 41.0 40.8 0.5 233.8 37.2 30000 0.16 0.05 0.60 1.60 0.00 -27 #N/A28 #N/A29 #N/A30 #N/A

Total Consolidation Settlement Sc= 3.67 mTotal Immediate Settlement Si= 0.00 m

Total Settlement Sf= 3.67 m

No LayerDepth

YP e0 OCR Sc SipThickness Cc CrE

2) Settlement Calculation Results (consider buoyancy) The Consolidation Settlement in consideration of surcharge loss due to bouyancy is calculated by repeated calculation.

XP H Sc Si Ttotalm m m m m

1 0.0 2.70 4.37 0.00 4.382 7.0 2.70 4.16 0.00 4.163 14.1 2.70 3.22 0.00 3.224 16.5 1.50 3.05 0.00 3.055 22.0 1.50 1.46 0.00 1.466 27.6 1.50 1.03 0.00 1.037 30.6 0.00 0.57 0.00 0.578 45.0 0.00 0.14 0.00 0.149 50.0 0.00 0.08 0.00 0.0810 60.0 0.00 0.04 0.00 0.04

NO.

In the analysis, the consolidation settlement with acutual required embankment thickness, HF is calculated to keep the elevation level of embankment, HE. (refer to

calculation tinh lun bom hut chan khong

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