上海国土资源Issue(1)：19-22,4.DOI:10.3969/j.issn.2095-1329.2013.01.006
基于下负荷面剑桥模型分析基坑降水对地铁沉降影响
Analysis of Tunnel Subsidence Caused by Foundation Pit Dewatering Using the Subloading Cam-Clay Model
摘要
Abstract
This paper uses the subloading Cam-clay model, based on the finite element method, to calculate the formation subsidence effect caused by excavation of a foundation pit and subsequent dewatering, and analyses its impact on a nearby tunnel. Potential subsidence surrounding the foundation pit was calculated under two scenarios: first, the combined effect of foundation pit excavation and dewatering, and second, reducing only the confined aquifer water level without excavation. From these calculations, we obtained the total subsidence, which is the subsidence surrounding the tunnel caused by the confined aquifer drawdown and other subsidence caused by the foundation pit excavation and dewatering. From these results, we were able to separate the level of subsidence caused by the foundation pit excavation and dewatering from the total subsidence. This provides a reference point for further research into, and the control of, engineering-related land subsidence.关键词
下负荷面剑桥模型/基坑降水/地面沉降/地铁隧道Key words
sub-loading cam-clay mode/foundation pit dewatering/land subsidence/tunnel分类
天文与地球科学引用本文复制引用
朱悦铭,瞿成松,徐丹..基于下负荷面剑桥模型分析基坑降水对地铁沉降影响[J].上海国土资源,2013,(1):19-22,4.基金项目
上海市科委科研项目(10231203500) （10231203500）
