摘要
运用MIDAS/GTS软件的渗流分析功能,采用渗流-应力耦合的计算方法,针对深基坑开挖地下水渗流对临近地铁结构的影响进行二维数值分析。得出结论:近地铁侧深基坑采用"地连墙+内支撑+止水帷幕"的支护及止水方式,能有效控制土方开挖过程中地下水渗流引起的地铁结构沉降;隧道底部孔隙水压减小量、隧道底部最大沉降量均随基坑开挖深度的增加呈抛物线趋势发展。
Based on the computing method of seepage--stress coupling and seepage analysis function of MIDAS/GTS, two-- dimensional Numerical analysis of effect of water seepage in foundation pit near metro structure is study in this paper. The results are the method of ＂diaphragm wall＋ inner support＋ waterproof curtain＂ used in foundation pit support near to metro, can control subway sedimentation caused by water seepage during excavation effectively. Moreover, pore water pressure reduction and maximum sedimenta- tion of the bottom of tunnel present parabolic trend with increasing excavating deptE
出处
《岩土工程技术》
2013年第4期184-187,共4页
Geotechnical Engineering Technique
关键词
基坑
渗流
地铁
二维数值分析
foundation pit
seepage
metro
two--dimensional numerical analysis
