LABORATORY STRAIN-HOLDING TESTS OF SETUP OF JACKED-IN PILES IN COHESIVE SOIL

Guo Jinjun; He Jianping; Shi Jianyong

doi:10.13204/j.gyjz201005013

Volume 40 Issue 5

Dec. 2014

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Guo Jinjun, He Jianping, Shi Jianyong. LABORATORY STRAIN-HOLDING TESTS OF SETUP OF JACKED-IN PILES IN COHESIVE SOIL[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(5): 62-69. doi: 10.13204/j.gyjz201005013

Citation:

Guo Jinjun, He Jianping, Shi Jianyong. LABORATORY STRAIN-HOLDING TESTS OF SETUP OF JACKED-IN PILES IN COHESIVE SOIL[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(5): 62-69. doi: 10.13204/j.gyjz201005013

Guo Jinjun, He Jianping, Shi Jianyong. LABORATORY STRAIN-HOLDING TESTS OF SETUP OF JACKED-IN PILES IN COHESIVE SOIL[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(5): 62-69. doi: 10.13204/j.gyjz201005013

Citation:

Guo Jinjun, He Jianping, Shi Jianyong. LABORATORY STRAIN-HOLDING TESTS OF SETUP OF JACKED-IN PILES IN COHESIVE SOIL[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(5): 62-69. doi: 10.13204/j.gyjz201005013

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LABORATORY STRAIN-HOLDING TESTS OF SETUP OF JACKED-IN PILES IN COHESIVE SOIL

doi: 10.13204/j.gyjz201005013

1.
1. Department of Civil Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China;
2.
2. Geotechnical Research Institute of Hohai University,Nanjing 210098,China

Received Date: 2009-11-09
Publish Date: 2010-05-20

Abstract

Abstract

Based on cavity expansion theory,with the assumption that compaction stress acted on the wall of the pile was constant,some scholars proposed analytical answer to the setup of jacked-in piles in cohesive soil. But in-situ tests showed that compaction stress was decayed constantly. A series of triaxial strain-holding tests were conducted,and the results of tests showed that the compaction stress decayed linearly with logarithmic time appreciatively,the effective stress decreased at the beginning and then increased later during consolidation of the soil near to the piles,and the increment of the effective stress was only 0.20～0.27 times the excess pore pressure. So it would be overestimatied pile bearing capacity by assuming that compaction stress was constant.
- cohesive soil,
- bearing capacity of jacked-in piles,
- pile set-up,
- strain-holding tests

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References(12)

References

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