以相邻基坑桩锚支护体系为支护背拉体系的某基坑的设计及监测  

DESIGN AND MONITORING OF A DEEP EXCAVATION WITH TIEBACK SUPPORT SYSTEM BY ADJACENT EXCAVATION'S PILE-ANCHOR SUPPORT SYSTEM

作　　者：刘波[1] 陈国强[1] 杨松[1] 王力生[1] 李玉[2] 

机构地区：[1]中冶集团建筑研究总院,北京100088 [2]平顶山工学院,平顶山467001

出　　处：《工业建筑》2007年第9期119-123,共5页Industrial Construction

摘　　要：介绍与周边地下室相距较近的某24m深的基坑支护。通过利用相邻基坑的桩锚支护体系作为新基坑排桩支护的背拉结构体系,不仅可解决新基坑支护难题,也可大大节省工程造价。从基坑开挖到回填的整个施工过程中(10个月),对该基坑的桩顶位移、桩身钢筋应力及锚杆拉力进行监测,建立有效的基坑变形预警系统,以指导在基坑围护中采取积极有效的措施,保证基坑在桩背后消防水管意外漏水和台风暴雨等突发事件中的安全。It is presented a 24m depth excavation supporting that is very near to the surrounding basement. Through the successful using again of the adjacent excavation pile-anchor supporting for new excavation＇s pile supporting structure, it was solved the difficult problem of excavation supporting and saved much engineering expenses. It was monitored displacement of the top of pile and stress of pile reinforcing bar and anchor dragging force, an effective forecasting system of excavation displacement was made and measures were also taken to ensure the excavation＇ s safety after unexpected water leaking out of fire water pipe and typhoon rainstorm.

关 键 词：深基坑 锚杆背拉 数值模拟 基坑监测 地下水 

分 类 号：TU753[建筑科学—建筑技术科学]