RESEARCH ON THICKNESS OF CUSHION AND PILE- SOIL STRESS RATIO OF CFG PILE

Yang Suchun

doi:10.13204/j.gyjz200406015

Volume 34 Issue 6

Dec. 2014

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2004 > 34(6): 44-47

LIN Yongjun, XU Wenqiang, ZHANG Xianzhao, LIU Kaiqi. SHEAR MECHANISM AND BOND STRENGTH CALCULATION OF NEW-TO-OLD CONCRETE INTERFACE WITH ANCHOR BARS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(6): 72-83. doi: 10.13204/j.gyjzG20080511

Citation:

Yang Suchun. RESEARCH ON THICKNESS OF CUSHION AND PILE- SOIL STRESS RATIO OF CFG PILE[J]. INDUSTRIAL CONSTRUCTION, 2004, 34(6): 44-47. doi: 10.13204/j.gyjz200406015

Citation:

Yang Suchun. RESEARCH ON THICKNESS OF CUSHION AND PILE- SOIL STRESS RATIO OF CFG PILE[J]. INDUSTRIAL CONSTRUCTION, 2004, 34(6): 44-47. doi: 10.13204/j.gyjz200406015

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RESEARCH ON THICKNESS OF CUSHION AND PILE- SOIL STRESS RATIO OF CFG PILE

doi: 10.13204/j.gyjz200406015

Yang Suchun

1.
Beijing Institute of Prospecting and Design Research Beijing 100038

Received Date: 2003-10-10
Publish Date: 2004-06-20

Abstract

Abstract

The relative between stress ratio of pile-soil and the thickness of cushion is researched by experimental and theoretical analyses. 7 experiments were conducted, including tests on 3 piles and single-pile composite-foundations. The distribution of stress and deformation in the composite-foundation were measured. The thickness of the cushion for test of 3 piles was 20cm and the test loading was 2 times of the designed one. When loading toe the designed load the pressure between the piles was 230kPa which is 160kPa higher than the bearing capacity of the original soil. The stress ratio of pilesoil was 14. 3, much less than the assumed stress ratio.When the thickness of cushion was suitable, the stress ratio is near to the assumed ratio. According to these measurements, when the thickness of cushion was 5cm, the deformation was less than the one of 20cm.Which was favorable for controlling settlement.
- CFG pile,
- pile-soil stress ratio,
- thickness of cushion

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References(2)

References

高大钊.地基加固新技术.第二版.北京:机械工业出版社,2002

[2] 《地基处理手册》编委会.地基处理手册.第二版.北京:中国建筑工业出版社,2000

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