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装配式地铁车站基坑变形数值模拟研究

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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.
NUMERICAL SIMULATION OF PIT DEFORMATION IN PREFABRICATED SUBWAY STATION
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.

prefabricated subwaypit excavationsupport structurefinite element analysis

李鹏、莫振泽、杨智学

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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

中铁一局集团城市轨道交通工程有限公司,江苏无锡 214000

装配式地铁 基坑开挖 支护结构 有限元分析

2024

低温建筑技术
黑龙江省寒地建筑科学研究院

低温建筑技术

影响因子:0.237
ISSN:1001-6864
年,卷(期):2024.46(8)