装配式地铁车站基坑变形数值模拟研究
NUMERICAL SIMULATION OF PIT DEFORMATION IN PREFABRICATED SUBWAY STATION
李鹏 1莫振泽 2杨智学3
作者信息
- 1. 锡澄中车(无锡)城市轨道交通工程有限公司,江苏无锡 214400;江苏中车城市发展有限公司,江苏无锡 214000
- 2. 锡澄中车(无锡)城市轨道交通工程有限公司,江苏无锡 214400
- 3. 中铁一局集团城市轨道交通工程有限公司,江苏无锡 214000
- 折叠
摘要
文中采用有限元软件ABAQUS,通过建立装配式地铁车站基坑的三维数值计算模型,对地铁基坑开挖过程进行模拟,对基坑支护体系及周边环境变形影响因素进行探讨.结果表明在基坑开挖过程中,支护结构整体呈现向内挤压趋势,基坑周边土体发生应力重分布,基坑内土体出现隆起;随着装配式构件的安装,负2层侧墙的应力与应变逐渐增加,并最终趋于稳定,反映出结构间良好的传力性能.
Abstract
The excavation process of the prefabricated subway station excavation is simulated by using finite ele-ment software,in which the impact factors on the support system and surrounding environment deformation are stud-ied.The results show that during the excavation process,the overall support structure exhibits a trend of inward com-pression;the stress redistribution occurs in the surrounding soil;the soil inside the pit is to bulge.With the installa-tion of prefabricated components,the stress and strain of the negative second-floor sidewalls gradually increase and eventually stabilize,which reflects the good transfer performance between the structures.
关键词
装配式地铁/基坑开挖/支护结构/有限元分析Key words
prefabricated subway/pit excavation/support structure/finite element analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据