Experiment on soil arching effect of pit supporting structure with scattered row piles and soil nail wall

被引：0
|
作者：
Gu H.-D. [1 ]
Luo C.-H. [2 ]
机构：
[1] Zhejiang Provincial Institute of Communications Planning, Design & Research, Hangzhou
[2] Department of Road and Bridge, Zhejiang Highway Technicians College, Hangzhou
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2018年 / 48卷 / 06期
关键词：
Centrifuge model test; Geotechnical engineering; Scattered row piles; Soil arching effect; Soil nail wall; Three-dimensional finite element analysis;
D O I：
10.13229/j.cnki.jdxbgxb20170805
中图分类号：
学科分类号：
摘要：
Eight groups of centrifuge tests of pit foundation supporting with scattered piles and soil nailing were carried out by Tongji University. Based on the results of eight group tests, the analysis model of the final form of soil arching effect in pit supporting structure with scattered row piles and soil nailing was put forward. Not only the dynamic development process of soil arching effect between piles was explored, but also the effects of the pile spacing and soil nailing parameters on the soil arching pattern was analyzed in combining with three-dimensional finite element numerical simulation. The results show that, for pit supporting structure with scattered row piles and soil nailing, when the ratio of pile spacing to pile diameter is greater than 8 or the ratio of soil nail length to the excavation depth is greater than 2/3, the soil between piles can not form soil arching effect. In addition, when the ratio of pile spacing to pile diameter is in the range of 4~6 and the ratio of soil nail length to excavation depth is less than 2/3, the soil arching effect is obvious. Furthermore, for pit supporting structure with scattered row piles and soil nailing, the final form of soil arching effect is a curved surface, which along the top surface appears as parabolic and along the depth direction has a certain vertical depth. © 2018, Editorial Board of Jilin University. All right reserved.
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页码：1711 / 1724
页数：13
相关论文
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