吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (2): 445-450.doi: 10.13229/j.cnki.jdxbgxb201602017

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Three-dimensional finite element analysis of internal forces and displacement of scattered row piles

HU Yu-ming1, 2, HUANG Yin3, GU Hai-dong4   

  1. 1.College of Water Resource & Hydropower, Sichuan University, Chengdu 610065,China;
    2.Sichuan Suntang Construction Engineering Co., Ltd., Chengdu 610042 ,China;
    3.School of Civil Engineering, Chongqing University, Chongqing 400045,China;
    4.Zhejiang Institute of Communications Planning,Design & Research,Hangzhou 310006,China
  • Received:2014-07-02 Online:2016-02-20 Published:2016-02-20

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Abstract: A three-dimensional Finite Element Model (FEM) of centrifuge was established first, and the reliability of the model was validated by centrifuge test. Then this method was compared with the current specified m-method. A case study of cantilever row piles was carried out to analyze the impact factors to the internal force and head horizontal displacement of the pile. These impact factors include the cross-section area of the pile, the pile spacing and soil strength. Results show that the design of row pile retaining structure by the m-method is conservative. The three-dimensional FEM method is more consistent with the centrifuge testing results than the m-method. The bending moment and the horizontal displacement of the pile linearly increase as the pile spacing increases and the pile width decreases. They nearly exponentially increase with the cohesion and internal friction angle of the soil.

Key words: row pile protection, centrifuge, three-dimensional FEM

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  • TU47
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[1] GU Hai-dong,LUO Chun-hong. Experiment on soil arching effect of pit supporting structure with scattered row piles and soil nail wall [J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(6): 1712-1724.
[2] SU Ying-she,YANG Yuan-yuan. Analysis of load transfer ratio of soil arching in sparse row piles [J]. 吉林大学学报(工学版), 2015, 45(2): 400-405.
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