摘要
通过对软土地区某基坑工程的数值模拟,探讨了开挖计算深度的选取以及坑中坑位置对围护结构水平位移的影响。计算结果表明:计算深度对基坑围护结构影响较大,对于本文算例,计算开挖深度取为最大深度得到的最大水平位移比不考虑内坑影响的情况大16.8%。基坑围护结构的水平位移随着内坑与围护结构的之间的距离的增加而减小,对于本文算例,当内坑与围护结构之间的距离小于7 m时,内坑位置对围护结构水平位移的影响较大;而当此距离大于7 m时,内坑位置对围护结构水平位移的影响则较小。
Numerical analysis was carried out to investigate the selection of computing depth and effect of inner pit on supporting structure lateral displacement in soft clay area.The calculated results showed that computing depth had a large effect on supporting structure,and the maximum calculated lateral displacement using the maximum depth was 16.8%larger than the minimum depth.The lateral displacement of supporting structure decreased with the increasing of distance between the inner pit and the supporting structure.As for the present example,when the distance between the inner pit and the supporting structure was smaller than 7 m,the distance affected the lateral displacement of supporting structure obviously,and when the distance was larger than 7 m,the effect was small.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2008年第S1期59-61,共3页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金项目(50708078)
关键词
坑中坑
数值分析
围护结构
水平位移
pit in foundation pit
numerical analysis
supporting structure
lateral displacement
