北京交通大学学报2017，Vol.41Issue(6)：122-129,8.DOI:10.11860/j.issn.1673-0291.2017.06.019
深基坑十字交叉换乘既有地铁车站变形特性分析
Deformation analysis of deep foundation pit across the existing subway station
摘要
Abstract
Based on the research data collected at Xiawafang station,which is a cross-transfer sub-way station of Tianjin subway line 5 and line 1,the horizontal displacement of foundation pit sup-port structure,the surface settlement behind the retaining wall,and the deformation of existing station caused by deep foundation pit crossing the existing subway station are analyzed.The re-sults show that the maximum horizontal displacement of support wall is 0.064％ H (in which H is the excavation depth),where is about 0.63H under the ground surface.The maximum ground surface settlement behind the retaining wall is 0.025％ H ,where is about 0.71H away from the wall.The influence zone extends to about 2H from the wall.The ratio between the maximum ground surface settlement and the maximum wall deflection is among 0.38 to 1.04,and its average value is about 0.77.The vertical deformation of the existing station which crosses the foundation pit is mostly uplifted.The horizontal displacement protrudes outside the railway sta-tion.The deformation of the existing station is mainly horizontal.By reinforcing the existing sta-tion with waterproofing sealing and reinforcing its soft soil layer behind the retaining wall,the existing structural deformation can be significantly reduced.关键词
基坑开挖/既有车站/地表沉降/变形规律Key words
excavation of foundation pit/existing station/ground surface settlement/deformation law分类
交通工程引用本文复制引用
刘美麟,侯艳娟,张顶立,房倩..深基坑十字交叉换乘既有地铁车站变形特性分析[J].北京交通大学学报,2017,41(6):122-129,8.基金项目
国家自然科学基金(51738002) （51738002）
中央高校基本科研业务费专项资金(2017JBZ201) Foundation items:National Natural Science Foundation of China (51738002 ) （2017JBZ201）
Fundamental Research Funds for the Central Universities (2017JBZ201) （2017JBZ201）
