相邻基坑开挖对高铁桥梁桩基的影响研究  

INFLUENCE OF ADJACENT FOUNDATION PIT EXCAVATION ON PILE FOUNDATION OF A HIGH-SPEED RAILWAY BRIDGE

作　　者：王振祥 WANG Zhenxiang(Geological Brigade,Jiangsu Bureau of Geology and Mineral Exploration,Nanjing 210041,China)

机构地区：[1]江苏省地质矿产局第一地质大队,南京210041

出　　处：《低温建筑技术》2022年第8期124-127,共4页Low Temperature Architecture Technology

摘　　要：为研究相邻基坑开挖对高铁桥梁桩基的影响,依托江苏某地铁车站基坑正穿高铁桥项目,采用有限元方法模拟相邻基坑开挖对围护墙与桥梁承台桩基的影响,同时分析了相邻基坑不同开挖顺序、承台基坑外侧钢板桩围护插入深度对控制桩基变形的作用。分析表明采用先开挖承台小基坑,后开挖车站大基坑的方式最佳,所引起的桥梁桩基附加位移最小,对类似工程有一定借鉴意义。Based on the project relies on the foundation pit of a subway station in Jiangsu Province, which is passing through the high-speed railway bridge, this paper studies the influence of foundation pit excavation on the adjacent pile foundation by the finite element method. The effects of different excavation sequence of adjacent foundation pit and the insertion depth of steel sheet pile outside the bearing platform foundation pit on the control of pile foundation deformation are analyzed. The results shows that the additional displacement of the bridge pile foundation is the smallest when the large foundation pit of the station was excavated after the small one, providing the reference for similar projects.

关 键 词：相邻基坑 桥梁桩基 开挖顺序 

分 类 号：TU473[建筑科学—结构工程]