key words : plastic board drain, oil pressure …key words : plastic board drain, oil pressure...
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1 179-8914 1-39-16E-mail: [email protected]
2 581-0068 1-4-25E-mail: [email protected]
3 101-0064 2-8-8E-mail: [email protected]
4 101-0064 2-8-8E-mail: [email protected]
5 581-0068 1-4-25E-mail: [email protected]
6 581-0068 1-4-25E-mail: [email protected]
PBD PBD
PBDPBD
FEM
Key Words : plastic board drain, oil pressure resistance, cone penetration test
1.
1
PBD PBD
PBD
PBD
PBD
2.
(1)PBD
PBD
2), 3)
SCK FFF (1)
KF CF
SF
(2)
CF
Cq̂ KA
CKC qAF ˆ (2)
PBD
Cq̂
PBD
(3) PBD (4) PBD
PBD PBD
(1) PBD
(2)
PBD 1)
SCK FFF
CF
SF
KF
Cq
0.010.02m/s PBD
0.3 0.5m/s
4), 5)
CC qq̂ (3)
(3) (2)
CF
Cq
CKC qAF (4)
(3)
SF
5 6m
7)
1PBD
20
SF
Sf̂
dzDfFz
KSS0
ˆ (5)
KD z
Sf̂
Sf
PBD
SS ff̂ (6)
(6) (5)
SF
dzfDFz
SKS0
(7)
Sf
Cq
Begemann8)Sf Cq
Schmertmann9)
FR )( CS qfRobertson10)
PBD
FR SfPBD
BegemannSchmertmann
FR 0.03 0.07
FR 0.05
6
35.7 mm
153 mm153 mm
PBD
47 mm
A 0.001 m2
D 0.112 m
AK 0.0217 m2
DK 0.535 m
PBD
(a) (b)
60°
dzqD
dzqFRDFz
CK
z
CKS
0
0
05.0 (8)
Cq
Cq
zqzz
dzqdzq C
z
Cz
C0
0(9)
(8) SF
Cq
KSCS AqF 05.0 (10)
KSA zDK
(4)(1)(4) (10)
KSCCKK AqqAF 05.0 (11)
Cq
KFMeyerhoff11)
FR =0.005
SCC AqqAQ 005.0 (12)
Q A SA(11) (12)
(11)Meyerhoff
3.
(1)PBD
MP PBD,
KF (11)
MP
KF
KF
MFW
WFF MK (13)
(11)(13)
KF
MFPBD
MP
MM PF (14)
KF MP(13) (14)
WPF MK (15)
WFF MK
MPMF
(2)
MP KF(15)
PBD
MP
KF
PBD
PDC-200 PDC-3002 PBD
PDC-200
MP
KF W
MF WFK
MP MF
(15)=0.0032
PDC-300PBD
MP
MF(15)
=0.0050PBD
PBD
KF
MP
WFM
W MND-01 202 PDC-200 0.0157D-02 302 0.0098D-03 314 0.0098D-04 302 0.0176D-05 312 0.0176D-06 310 0.0078
PDC-300
PBD
W
MP (15) KF
4.
(1)
Cq
MP (11)
PBD(11) 2
|KF (1)
SCK FFF | (16)
KF CF
SK FF | (17)
(16) (17)
CKK FFF || (18)
CF SF
212
PBD PDC-200W 0.0157MN
Cq
G.L.-4m
MP (11)
G.L.-5m
SCK FFF
CF
SF
WFF MK
MF
W
SK FFSF
WFF MK
MF
W
T1-A-01 1.0 0.8 T2-A-01 1.0 1.0T1-A-02 1.0 0.8 T2-A-02 1.0 1.0T1-A-03 1.0 0.8 T2-A-03 1.0 1.0T1-B-01 0.5 0.5 T2-B-01 0.9 0.9T1-B-02 0.5 0.5 T2-B-02 0.9 0.9T1-B-03 0.5 0.5 T2-B-03 0.9 0.9T1-C-01 0.3 0.4 T2-C-01 0.6 0.6T1-C-02 0.3 0.4 T2-C-02 0.6 0.6T1-C-03 0.3 0.4 T2-C-03 0.6 0.6T1-D-01 0.2 0.3 T2-D-01 0.8 0.8T1-D-02 0.2 0.3 T2-D-02 0.8 0.8T1-D-03 0.2 0.3 T2-D-03 0.8 0.8
V m/sNo. No.
CPT-01 CPT-02
No. No.V m/s
MP 1.0 1.5MPaG.L.-5m
(2)|KF
|MP (15)
WPF MK || (19)
|KFW
|MP
WPF MK || (20)
(19) (20) (18)
WPPF MMC 2|| (21)
CF MP
CF Cq(4)
CKC qAF (4) :
(4) (21)
MP
CF Cq
KC Aq
1.0
0.21.0m/s
PBD
(3)
SF (17)(20) MP
WPF MS | (22)
SF
(a) CPT-01 (b) CPT-02
Cq (10)
KSCS AqF 05.0 (10) :
(10) (22)
MP
SF
Cq
KSC Aq05.0
0.06
(4)(11)
MP
Cq=1.0 =0.06
(11)
5.
PBD(11)
7 PBDPBD
1.0 0.010.1
(8)FR 0.05
W MN-01 PCD-300 0.0050 0.0168 0.06-02 PDF-300 0.0050 0.0141 0.03-03 PDF-300 0.0050 0.0063 0.06-04 PDF-200 0.0032 0.0075 0.03-05 PDF-200 0.0032 0.0088 0.07-06 PDC-300 0.0050 0.0098 0.06-07 PCD-300 0.0050 0.0098 0.05
PBD
1.0
(a) -01 CPT-01 (b) -01 CPT-02
(c) -01 CPT-03 (d) -02 CPT-01
(e) -02 CPT-02 (f) -03 CPT-01
(g) -04 CPT-01 (h) -05 CPT-01
(i) -05 CPT-02 (j) -06 CPT-01
(k) -07 CPT-01 (l) -07 CPT-02
0.03 0.050.05
0.07
PBDPBD
6.
PBD 0.6 1.5mPBD
PBD25m
1.2m 1.2m
PBD 2
PBD
7000
PBD
12
PBD
PBD
PBD
Cq =1.5MPa2
A-A’
A-A’10m
5 15m
PBD
PBD
PBD
FEM13), 14) PBD
PBDPBD
PBD
0.5
3.54.5
2.51.5
(MPa)
A
A’
B’
C’
C
B
3
PBD
1
7.
PBD
PBD
PBD
FEMPBD
A-A’ SECTION
: Sand : Clay
0 50 100 150(m)
0
10
(m)
20
30
B-B’ SECTION
0
10
(m)
20
30
0 50 (m)
C-C’ SECTION
0
10
(m)
20
30
0 50 (m)
: Sand : Clay
: Sand: Clay
A-A’ SECTION
0.5
3.5 4.5
2.5 1.5
(MPa)
0 50 100 150 (m)
0
10
(m)
20
30
B-B’ SECTION
0.5
3.5 4.5
2.5 1.5
(MPa)
0
10
(m)
20
30
0 50 (m)
C-C’ SECTION
0.5
3.54.5
2.51.5
(MPa)
0
10
(m)
20
30
0 50 (m)
2
1) : , ,
pp.99-130, 2009. 2) , , , : PBD
,64 , III-181, pp.361-362, 2009.
3) , , , , , :
, 65, III -393, pp.785-786, 2010.
4) : , ,
No.757( 333 ), 1971. 5) Muromachi, T. : Cone penetration testing in Japan, Proc.
of Cone Penetration testing and experience, ASCE National Conv., St. Louis, pp.49-75, 1981.
6) : ,pp.233-235, 1995.
7) , : ,, pp.183-210, 1976.
8) Begemann, H.K.S.Ph. : The Friction Jacet Cone as an Aid in Determining the Soil Profile, Proc. of the 6th ICSMFE,Vol.I, pp.17-20, 1965.
9) Schmertmann, J.H. : Dutch friction-cone penetrometer exploration of research area atfield 5, Eglin Air Force Base, Florida, U.S. Army Eng. Waterways Exp. Stat.,Vicksburg, Miss., Contact Rep., S-69-4, 1969.
10) Robertson, P.K. : Soil classification using the cone penetration test, Canadian Geotechnical Journal, Vol.27, No.1, pp.151-158, 1990.
11) Meyerhof, G.G. : Penetration Test and Bearing Capacity of Cohesionless Soils, Proc. of the ASCE, Journal of the Soil Mech. and Found. Div., Vol.82, No. SM1, p.866, 1956.
12) NCB : , p.61, 2001. 13) , , , , ,
: FEM, 65 , III
-389, pp.777-778 2010.14) , , , , ,
: FEM 1, 65
, III -234, pp.467-468, 2010.
DEVELOPMENT OF GEOLOGICAL DISTRIBUTION PRESUMPTION METHOD USING OIL PRESSURE RESISTANCE OF THE PLASTIC BOARD DRAIN
MACHINE
Masafumi HIRATA, Shinichiro SHIRAGA, Hideki SHIMIZU, Jun FUKUDA, Shuu KAWANABE and Tadaaki NOMURA
Plastic board drain (PBD) method is a consolidation method which can accelerate consolidation by placing a lot of PBD into the soft ground. It is important for PBD method to get information about the layer thickness of soft ground and geological distribution, before designing the optimal arrangement of PBD. However, it is difficult to get the accurate information by soil exploration with an only few samples.
In this paper, the simplified estimating equation is proposed that evaluates cone bearing capacity by using oil pressure resistance of placing PBD machine during operating. Furthermore, the system is proposed that can evaluate the distribution in three dimensions of ground strength by using estimated cone bearing capacity. Finally, it was confirmed that this proposed system could evaluate the layer thickness of soft ground and geological distribution accurately.