摘要
采用考虑连续墙与土体接触面的三维弹塑性有限元方法对上海银行深基坑工程进行了数值分析,得到了基坑围护墙体的变形与基坑开挖引起的周围地表沉降.结合实测数据,与不考虑接触面的分析结果进行比较,讨论了连续墙与土体接触面特性对基坑变形分析结果的影响.结果表明,考虑接触面特性的计算方法与实测结果更加吻合,不考虑墙土接触面特性所得到的基坑变形和坑外地面沉降偏小.
A three-dimensional finite element method by considering the properties of the diaphragm wallsoil interface was applied to analyze the excavation of a deep foundation pit in Shanghai soft ground. The simulation results were compared with the monitoring data as well as the simulation results without diaphragm wall-soil contact. The influence of diaphragm-soil interface on the deformation analysis of excavation was discussed. The results of simulation considering the properties of the diaphragm-soil interface show closer agreement with the measure ment data. Moreover, the model without diaphragm wall-soil contact generally gets smaller wall deformation and induced ground movement.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2006年第12期2118-2121,共4页
Journal of Shanghai Jiaotong University
关键词
深基坑
接触面
变形
有限元方法
deep excavation
diaphragm wall-soil interface
deformation
finite element method
