《结构与土木工程前沿（英文）》
>> 2017年
第11卷
第4期
doi:
10.1007/s11709-017-0397-7
RESEARCH ARTICLE
Soil arching effect of Lattice-Shaped Diaphragm Wall as bridge foundation
. School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China.. Department of Geological Engineering, Southwest Jiaotong University, Chengdu 610031, China
录用日期：
2017-05-10
发布日期：
2017-11-10
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摘要
As a new type of bridge foundation, Lattice-Shaped Diaphragm Wall (hereinafter for LSDW) is highly concerned in relevant construction area but its research is far from achievement. Based on PFC , the soil arching effect of LSDWs is studied thoroughly in this paper and the special attention is given to its influencing factors. It turns out to be that a differential wall-soil settlement can be found at the lower location of soil core of an LSDW which is one of the trigger factors of soil arching; meanwhile, the differential settlement degree can reflect the exertion degree of soil arching; the shape of soil arching is basically a hemisphere which can be explained by the theory proposed by Hewlett and Randolph; normally, the chamber number is a negative factor for the development of soil arching; the soil arching effect is significantly influenced by the distance of two adjacent wall elements and the foundation depth, and a relatively large or small value of these factors is disadvantageous to the exertion of soil arching; in addition, the soil arching effect increase with the growth of stiffness and friction coefficient of particles and the friction coefficient of particles has insignificant influence on the development of soil arching effect compared with particle stiffness.
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