8-8

905

1. 9111.1 9111.2 912

2. 9152.1 9152.2 915

2.2.1 9162.2.2 , 9162.2.3 9162.2.4 9172.2.5 9172.2.6 9202.2.7 920

2.3 920

3. 9223.1 922

3.1.1 9223.1.2 9243.1.3 9243.1.4 9263.1.5 9263.1.6 9263.1.7 9323.1.8 9333.1.9 934

3.2 9343.3 935

3.3.1 935

3

906

3.3.2 9373.3.3 9383.3.4 938

3.4 9393.5 939

4. H 9414.1 9414.2 9414.3 942

4.3.1 9424.3.2 9484.3.3 9484.3.4 9494.3.5 9494.3.6 9504.3.7 9504.3.8 , 951

4.4 9514.5 9534.6 953

4.6.1 9534.6.2 9544.6.3 9544.6.4 9584.6.5 9624.6.6 964

5. 9655.1 9655.2 965

5.2.1 9655.2.2 9665.2.3 972

907

5.3 9745.3.1 9745.3.2 9755.3.3 979

5.4 9795.4.1 9805.4.2 9805.4.3 9815.4.4 982

5.5 9825.5.1 9825.5.2 9835.5.3 9835.5.4 9835.5.5 9845.5.6 , 987

5.6 9885.7 988

5.7.1 9885.7.2 9885.7.3 9895.7.4 9905.7.5 9905.7.6 991

5.8 9915.9 992

6. 9936.1 9936.2 9946.3 9986.4 , , 9996.5 1000

6.5.1 1000

3

908

6.5.2 10016.5.3 10016.5.4 10026.5.5 10026.5.6 10026.5.7 10036.5.8 10036.5.9 (ground anchor) 10036.5.10 10046.5.11 10076.5.12 10076.5.13 10086.5.14 10096.5.15 1010

7. 10117.1 10117.2 10127.3 10127.4 10127.5 10137.6 10137.7 10137.8 10147.9 10147.10 1015

8. 10168.1 10168.2 10168.3 10178.4 10188.5 1019

909

9. 10209.1 10209.2 10219.3 10219.4 1022

1023

8-8

911

1.

1.1

, , , , .

, . , , . , . , 10m , 10m , 8m . , (stability number) . , , 2 . . , , , ,

3

912

1.2

, , .(1) H

H , H .

(2) , .

(3) , . 1 , , , .

(4) , .

(5) .

(6) , .

H 2 . H H , . , . .

8-8

913

U ()

H

,

3

914

()

8-8

915

2.

2.1

, , , , , , , , .

. , . , .

2.2

, .

. . . 2.2.1 ~ 2.2.7 .

3

916

2.2.1

, .

, . . , . , , , , .

2.2.2 ,

, , , .

. H , N, , , , H . , .

2.2.3

, .

8-8

917

, , . ( ), . .

2.2.4

.

, , , , , .

2.2.5

, , , .

, , , , , , , . , . .

()

()

()

()

()

()

3

918

() . .

() , , H, .

() , , , .

() 1 (1 ) . , , . . I H .

() ( ) () . 1 20 . ( ) . 1 , .

8-8

919

() . .

() . () . .

() H, . . . .

() . H, , . , . .

() H . , N 0 . , . .

() . , , .

3

920

() . (underpinning) , . .

2.2.6

, , .

. . , .

2.2.7

, , , .

. , . , () , .

2.3

2. , , .

8-8

921

() H , . .(a) H

,

(b) H , , (a)

, . H , , .

() (, ) , . , .

() , .

3

922

3.

3.1 3.1.1

.(1) (2) (3) (4) (5) (6)

.

8-8

923

1. 2. 3. 4. 5. 6.

H

- - - -

- - - - - -

- - - -

- - - -

- - - - - -

- - -

- - - - - - - -

- - -

- - - - - -

- - - - - - - - - -

, , , , . , .

3

924

DB . . , ( ) .(1)

W(kN)

1.8W(kN)0.1W(kN)

0.4W(kN)

123

DB-24DB-18

DB-13.5

240180135

432324243

2418

13.5

967254

3.1.2

. , .

(kg/m3)

, ,

7,8507,2502,8002,5002,500

()

2,3502,150800

1,1002,300

, 2.12 .

3.1.3

8-8

925

( )

(2)

()

2.1.3 DB . .

3

926

(1) Rankine Resal . RankineResal .Pa = (q +h) tan2 (45- /2) - 2Ctan (45- /2) ( 3.1)Pp = (q +h) tan2 (45+ /2) + 2Ctan (45+ /2) ( 3.2)

A .

Pr A RA = Pr(1 + y1 + y2)Pf A RA = Pf(1 + y1 + y2)

. . .

3.1.4

0.3 .

0.3 . 2.1,4 i=15/(40+) = 6~12m i=0.29~0.33 . i=0.3 i=0.29~0.33 2~4% .

3.1.5

10kN/ .

H , 10kN/ .

3.1.6

8-8

927

, Pa : (kN/) : ()q : Pp : (kN/)

(10kN/) h : (m) : (kN/) C : (kN/)

(2) , , .

(a) (b) : a, b, c : .

a, b, c

5.0mH a=1

5.0mH3.0m a=1/4(H-1)

b c

2N>5 4N5 6

N : N

.

KA = Tan2(45-/2) KA = 1-(4SU)/(H) (SU : )(a) (b) (c)

Peck(1969)

3

928

(a) (b) (c) Tschebotarioff

(a) (b) (c)

, , Terzaghi Peck Tschebotarioff . . 28 , 34 , 16 , 32 m~m H , , . ~ . , , .

() , .

() , (N>5, N5) 3 .

8-8

929

() .

() () q/(m) q (m) . . . (stability number), , . 8. .

()

3

930

( N5)

8-8

931

( N>5)

3

932

( 3.3)

(a) (b)

3.1.7

. .

ABC OEB ABD . , .

8-8

933

.

3.1.8

. 0.6H .P = 10KV2A ( 3.4), P : (kN)

K : ()V : (m/sec)A : ()H : (m)

0.07

0.04

0.02

0.07

3

934

3.1.9

H , , 120kN .

( 6 ) 1 11~12.5kN . . 1 10 120kN . 120kN .

3.2

.

, ~ . . .

U (mm) (N/m) (cm3) (cm4)

W h t 1 1m 1 1m 1 1m 400 75 8.0 365 912 66.4 509 429 3,820 400 100 10.5 180 1200 121 869 985 8,690 400 125 13.0 600 1500 196 1,310 1,920 16,400 400 155 15.5 761 1900 311 2,060 3,690 31,900 500 200 24.3 1,050 2,500 520 3,150 5,950 55,200

8-8

935

210MPa /r 20 210MPa

20 /r 93 {140-0.84(/r-20)}1.5MPa

/r 93 { } 1.5MPa

: ()r : 2()

210MPa /b 4.5 210MPa

(1) , .

(SS400, SM400, SM41)

1,990 750 200

H 2,000 1,000 206

DB-24 DB-24 (f / ) 180 182

,

3.3 3.3.1

3

936

4.5 /b 30 {(140-2.4(/b-4.5)}1.5MPa : ()b : ()

120MPa

(MPa) B8T B10T 220 285

(MPa)

SS400

40mm 36040mm 75mm 330

90% .)

(2) .

270MPa 270MPa 1.

220MPa 220MPa 130MPa

2. 140MPa 140MPa 80MPa

8-8

937

(1) SS400 SS400 .

. 3.3.2.1 50% .

(2) ( fy=300MPa) 50% . 3 , 360MPa .

80% . , , . 50% .

3.3.2

(MPa)1

2 ( )

3 ( )

4 - -

5 , fck : 28 (MPa)(1)

3.3.3 .

3

938

(1) fck=24MPa 50% .

50% . .

3.3.3

.

fsa(MPa) SD 300 SD 400 225 270

4.5.2.2 50% .

3.3.4

.

(MPa)

,

, , , , 12.0 13.5 1.05

, , , 9.0 10.5 0.75

13.5 19.5 2.1, , , 10.5 15.0 1.5

10.5 13.5 0.9

, .

8-8

939

(1) N 30 N 10 3m . .

H - 400H - 350H - 300

600kN450kN300kN

.

(2) 3m 2 . (3.5) .Qu = 20NA + (NcAc + 0.2NsAs) ( 3.5), Qu : (kN)

N : NA : ()Nc : N Ac : Uc()

3.4

8-3 2.2 2.3 .

, ( ) . .

3.5

3

940

Ns : N As : Us() : () : 1.0 ( ) 0.5 ( )U : {

8-8

941

4. H

4.1

H .

H , , . . RankineResal {3.1.6 (1)} , {3.1.6 (2)} . .

4.2

, .

. (. , H-300 . , .

3

942

4.3 4.3.1

, , , , .

5. 3. 2 5. 3. 3 , . H . , , .

8-8

943

3

944

8-8

945

3

946

8-8

947

H

3

948

4.3.2

3.5 .

4.3.3

1 .

.RankineResal , ypPp=yaPa (~ h1), Pp . , 1.0m .

( ) ( 1 )

RankineResal , , . H 2~3 ,

8-8

949

. . 8-3 2.2 . , . 4.3.4 1/2, 750 .

4.3.4

1.2 , 1.5m 1.5m .

4.3.3 2 . 1.5m .

4.3.5

3.1.6 (2) , . , .

4.3.3 2 . . , 3.4.3 . 1, 2 .

3

950

4.3.6

1.5m . 1m 2m .

1~2m 1.5m . .

4.3.7

, , , , .

1m .

8-8

951

4.3.8 ,

, , , .

, . , . , , . , 1m .

4.4

(1) , .

(2) 3.5 .

(1) . , , . , () .

(2)

()

()

() ,

3

952

() .(a) ()

. () A B C . () A 1/2 .

(b) . 1/50 .

(c) , 5kN/m (4.6.4 ). ()~() () () ()( ) () . (1), (2), (3) .

8-8

953

4.5

, 40 .

.

( 4.1), t : ()

b : (1m)f : (MPa)M : (= W2/8)W : (N/m) (4.3.5 ) : (m)

30, 40 .

1= , 40

4.6 4.6.1

(1) 3m 1m 1 . .

(2) 5m , 3m .(3) 6m .

, .

3

954

4.6.2

4.3.5 .

, . . .

4.6.3

4.6.2 , . .

. . , , (4.2) .

( 4.2)

, h : S : t : Z :

8-8

955

3

956

-w

8-8

957

-w

3

958

. . (1 + 2) ().H , .(4.2) , , .

4.6.4

(1) 4.6.2 .

(2) 120kN .(3)

(1), (2) .

(1) . , 3.4.3 .

5kN/m . .

8-8

959

() (a) (b) 1, 2, 3

.

() (a) 1 ( )

L-130 L1 . -150 2.51, 2.52, 2.53 . , L1 L1 .

3

960

L-130 4 + 5 6 . -150 2.54, 2.55 ( 4 +5 4 +5) 6 .

(b) 2 ( ) A

1, 2, 3 . B

1.51, 1.52, 1.53 B .

C 1.55, 1.56 ( 5 + 6 5 + 6) 4 . , . . 45 . , /r( r 2) .

8-8

961

() 1 L , ( -150 .)(a) L > 4.35 .(b) L 4.35 .

3

962

(1 )

() 2 L , (a) L > 2.6 .(b) L 2.6 .

(2 )

N .

4.6.5

4m .

8-8

963

.

N

3

964

. L1301309 -150 .

4.6.6

(1) 45 .

(a) (b)

(2) .N = 0.7(1 + 2)w ( 4.3), 1, 2 :

w : (3) .

S = 0.7N ( 4.4)(4) .

(1) 45 .

(2) .

(3) .

8-8

965

5.

5.1

, .

. , , . . .

5.2 5.2.1

, , ., H-300300 6m .

, .

3

966

2~3m . , .

5.2.2

(1) .(2) .

() , 1m .

() .() .

8-8

967

3

968

8-8

969

3

970

8-8

971

3

972

(1) .

(2) .

() .

() .

() . , . .

5.2.3

1m 60% ., , 80% .

50~70% . 60% ., 80% . 60% .

8-8

973

3

974

5.3 5.3.1

.

(a)Terzaghi (b)

(Terzaghi ) ( 5.1)

L = d1 + d2 ( ) ( 5.2)d1 = h + d2 = H + d2, ' :

d1 : ( )d2 : H : ()Fs : (1.5 )L : ()

. . (5.1) (5.2) .

8-8

975

(5.1) . . (d1) (d2) d1 + d2 (H) . (d2) (d1) . , .

5.3.2

(heaving) . .

. . , 5 5m . . , . Xo . Xo 5.5.1 X=Xo Fs1.2 . Xo Fs1.2 X=Xo 5.5.4 5.5.5 . Xo . 5.5.1

3

976

5m Xo 5m . Xo=5m 5.5.5 . Xo=5m , Xo 5m . Xo 5m . Xo .

c=0.2z (z: ) .

Xo = 0.5h, Fs = ( 5.3)

, h : c=az+b

( 5.4)

( 5.5). c=0.2z h Fs . h+q , .

8-8

977

(). .

() .

() .

() . .

() .

() .

3

978

8-8

979

5.3.3

, . ( 5.6)

. .

5.4

., 5.5 .

, . 3~5m .

3

980

. .

5.4.1

.

() RankineResal .

() PaYa + PwYw = PpYp . 0.5~1m Max Mpx Mx=Max-Mpx=0 . .

5.4.2

1.2 2m . ( ) .

8-8

981

.

() Chang

()

() ()Chang . . o LL = 1.2 o ( 5.7)

o + 2m .

5.4.3

.

3

982

5.4.4

, , .

5.4.1 Max Mpx Mx=Max-Mpx .

5.5 5.5.1

1 . , 5m .

PaYa=PpYp . Pa . 1 . . 5m . 5.5.2 .

8-8

983

5.5.2

1.2 . , 3m, ( ) 1.8 .

5.5.1 . , 3m . 1.8 . . (RankineResal) () . RankineResal . . .

5.5.3

, , .

5.5.4

3.1.6 3.1.7 .

5.5.2

3

984

0 . RankineResal AB ., .

. 5.5.1 . . 5.5.5 .

5.5.5

. 300 . .

.

8-8

985

. () . . , 5.5.1 1/2 , 3.1.6 3.1.7 . , . K(f/) A( 100, h1) ., K = KA(f/) ( 5.8)

K . . .

3

986

N K

. k 1/2 , . 1 2='/2' . 3.1.7 . P P/ . '=/2, 2=2'/2 . 30 10m, C=20kN/ 30 . AB

=

f3% = f y=10100.03=0.3m=30

8-8

987

5.5.6 ,

, , , .

, . . , , . 1m .

3

988

5.6

. .

. , ., () . 1/50 . . , 3m .

5.7 5.7.1

(1) 3m , 1m 1 . , .

(2) 5m , 3m .(3) 6m .

, .

5.7.2

3.1.6 3.1.7 .

8-8

989

(, ) . 5.5.4 . (kN/m), .

,

5.7.3

5.7.2 . .

4.6.3

3

990

5.7.4

(1) 5.7.2 .

(2) .(3) .(4) 120kN .

4.6.4

5.7.5

4m .

4.6.5

8-8

991

5.7.6

(1) .(2) .(3) 45 .(4) .

N = 0.7 (1 + 2)w ( 5.9), 1, 2 :

w :

(a) (b)

(5) .S=N/ ( 5.10)

(6) .

4,6,6

5.8

.

. . H-300300 , . 1m .

3

992

5.9

5 + 0.5m .

, .

8-8

993

6.

6.1

.(1)

.(2) 6.5

.(3)

.

(1) , . , .

.

(2) , . .

3

994

6.2

2m . , .

() 2m .

() , . . .(a) Mr

Mr = 1/6 RoHo3 ( 6.1)Ro = 2/3 o2(3-o cos) tan sin ( 6.2)Ho = 1/2(ihi) = 1/2(1 h1 + 2 h2) ( 6.3)0 = B/Ho ( 6.4)

, B : (m)i, hi : (kN/), (m) : ()

(b) RdRd = tanu(i hi)B ( 6.5), u :

8-8

995

( C50kN/ ) (6.5) (6.6) Rd .Rd = CB ( 6.6)

(c) MdFs2Mr ( 6.7)PFs2Rd ( 6.8), Fs : (Fs1.5)

P : (kN/m)Md : (kNm/m)

(d) 1.5m h(m) Md (6.9) h

~ .Md = 10KV2 h (0.6h) ( 6.9), K : ( 0.07)

V : (m/sec)(0.6h) : (m)

3

996

B-h-V (=25) Fs=1.5

8-8

997

B-h-V (=25) Fs=1.5

3

998

B-h-V (=30) Fs=1.5

6.3

.

() .

() .

8-8

999

() .() = 18kN/() = 10kN/ = 20~ 30 C = 0kN/

6.4 , ,

, , .

() () . , , . .

3

1000

() , , .

() . .

() .

6.5 6.5.1

, Rankine Resal . .

() RankineResal . .

() . (H.W.L L.W.L ) 2/3 .

8-8

1001

6.5.2

. 5m .

5.5.1 . . . .

6.5.3

6.5.2 1.2 . , 3m .

3m . , .

3

1002

6.5.4

6.5.1 , .

6.5.5

1/2 . fa2/3 .

. 1/2 .

6.5.6

1 . 1 .

8-8

1003

1 0.4m , , , 1.6m . , 0.5m, 0.4m 2m . , . 2 1 .

6.5.7

SS400, 25 . fsa2/3 .

6.5.8

.M = T/10 ( 6.10), M : (kNm)

T : (kN) : (m)

6.5.9 (ground anchor)

PC .

, , , .

3

1004

soil anchor rock anchor . pre-stress , .

(1) (ground anchor)

.

Ground Anchor

(2) (Tension Zoin)

.

PCPC PC , sheath .

(3) (Anchor Length)

.

. .

, , (know-how) . , , .

6.5.10

8-8

1005

(4) (fixed anchor length)

.

. . , . 3~10m , 3m . , 10m .* FIP : 3.0m 10m .**USA : 4.6m(15ft) .

.(5) (free anchor length)

.

, 4m .

3

1006

, .* FIP : 4.6~7.6m(15~25ft) .**USA : 4.6m(15ft) .

(6) (anchor incline)

. .

. breathing , -10~+10 . USA -5~+5 ( : AAW )* FIP : -10~+10 .**USA : -5~+5 . .

8-8

1007

6.5.11

.(1) (2) (3) grout (4)

. , , . , .

6.5.12

(1) (2) (3) . , , , , .

, , . , , group . , 5m .

3

1008

6.5.13

(1) (2) (3) (4) .

(1) . , . .(2) , heaving, boiling . , .(3) , . .a. E.Kranz b. R.Jelinek, H.Ostermayer (4) , , . . (1),(2) , (3),(4) .a. B.B.Broms b. H.Schmidt c. H.G.Locher, Littlejohn d. Ostermayer

8-8

1009

e. JR() f.

6.5.14

.

6 , . 1.4 1.1

2 . . . 1.5 1.2

. anchor cable .

2.0 1.3

3

1010

6.5.15

.

(MPa)

1.0 ~ 2.5 0.6 ~ 1.5

0.4 ~ 1.0

N

10 0.1 ~ 0.220 0.17 ~ 0.2530 0.25 ~ 0.3540 0.35 ~ 0.4550 0.45 ~ 0.70

N

10 0.1 ~ 0.1420 0.18 ~ 0.2230 0.23~ 0.2740 0.29 ~ 0.3550 0.30 ~ 0.40

0.1c

8-8

1011

7.

7.1

, , , , .

. . DB . , , . , . . , , . . .

3

1012

7.2

. H-300300 I-300150 H-300300 I-300150 -25090() L-100100 19

KS H, I, , L . EI . , , .

7.3

.

, . . 4m , 6m .

7.4 2m . , 2m . 2m . 2m 2m .

8-8

1013

7.5

6m . .

, . 6m .

() , .

() . . .

7.6

6% .

6% () . , .

7.7

1m, 1m .

, .

3

1014

. .

7.8

3.1.2 3.1.3 3.1.4 1/400 .

3.1.3 , . . /400 /300 .

7.9

. 5% .

() 4.4 1/2 . . , , .

8-8

1015

7.10

.(1) .(2)

() .(3) () .(4) .

3

1016

8.

8.1

. , .

, , . , , , , . , . , .

8.2

(1) .() ()

(2) , .

8-8

1017

, .

8.3

(parapet) .(1) ,

.(2) .

.

(a) , .(b) , , .(c) , .(d) , . .

(1) . ,

3

1018

. . .

(2) , . 4 , 1/2 . 0.5 . ( ) 40% . .

8.4

.(1) 3m

, .(2) 5m ,

.

8-8

1019

, . , 3m .

8.5

.(1) .

() ()

(2) .

.

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.

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8-8

1023

1. , , 2002.

2. , , 1992.

3. , , 2001.

4. , , , 1980.

5. , , 1990.

6. , , 2002.

7. , , 2006.

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