摘要
以某紧邻地铁车站的深基坑工程为例,建立三维有限元模型对不同基坑支护方案的影响进行对比分析,为方案比选提供依据。研究表明,基坑施工过程中,拟建基坑与地铁车站共用地下连续墙时,地铁车站结构的位移比不共用地下连续墙时大;地铁车站侧墙的弯矩大小与拟建基坑和地铁车站是否共用地下连续墙无关;出于安全考虑,建议拟建基坑不要与地铁车站共用地下连续墙。
Taking for example the project of deep foundation pit adjacent to metro station,a three-dimensional finite element model is established to analyze and compare the impact of different foundation pit support schemes,providing a basis for comparison and selection of schemes. The research shows that,during the foundation pit construction,when the proposed pit foundation and the metro station share common underground diaphragm walls,the displacement of the metro station structure caused by excavation of foundation pit is larger than that of the metro station structure with no common diaphragm walls. The bending moment of side wall of metro station has nothing to do with whether the foundation pit and metro station share the underground diaphragm wall. For safety,it is suggested that the foundation pit should not share the underground diaphragm wall with the metro station.
作者
陈家航
Chen Jiahang(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510641;State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510641)
出处
《工程建设》
2018年第12期29-32,共4页
Engineering Construction
关键词
深基坑
支护
地铁车站
有限元分析
方案
deep foundation pit
support
metro station
finite element analysis
schemes
