地铁车站深基坑围护结构变形规律监测  

Deformation law of deep excavation in metro interchange station

作　　者：任建喜[1] 高廷廷[1] 

机构地区：[1]西安科技大学建筑与土木工程学院,陕西西安710054

出　　处：《西安科技大学学报》2011年第4期408-411,419,共5页Journal of Xi’an University of Science and Technology

基　　金：西安科技大学培育基金项目(200607);陕西省教育厅科研计划资助项目(2010JK667)

摘　　要：以西安地铁2号线北大街地铁车站北区深基坑工程为依托,完成了深基坑围护结构现场监测方案设计。重点分析了桩身水平变形规律、锚索受力特点、钢支撑轴力分布规律。结果表明,桩身水平位移,特别是桩顶水平位移,能直接反映围护结构变形特性,是围护结构安全状况的重要指标。钢支撑对深基坑变形有明显的限制作用。Taking deep excavation engineering of North Station on the second line of Xi＇ an Subway as an example, the plane design of in-situ monitoring of deep excavation retaining structure has completed, and the emphasis is given to analyze the deformation laws of the retaining pilos and, tension force of the cables and the force of steel support. The results show that the deformation of pile-wall＇ s, especially the deformation of pile top is related to the deformation situation of supporting structure and can directly refleet the deformation characteristics of supporting structure, which is the important criterion of the safety of condition of supporting structure. The steel support is useful to restrict the deformation of the excavation.

关 键 词：地铁车站深基坑 围护结构 钢支撑 

分 类 号：U213[交通运输工程—道路与铁道工程]