某高层建筑超大深基坑土方开挖与支护技术  

Deep Foundation Excavation Technology for a Tall Building

作　　者：成军[1] 刘加华[1] 徐琳[1] 

机构地区：[1]南通纺织职业技术学院建工系,江苏南通226007

出　　处：《施工技术》2012年第10期62-64,共3页Construction Technology

基　　金：南通纺织职业技术学院2010年教学改革立项研究项目:<高层施工>课程学习情境设计与项目化教学改革(JG10016)

摘　　要：在某高层建筑超大基坑项目施工过程中,浅层采用土体自然放坡、复合土钉墙,深层采用钻孔灌注桩结合旋喷锚杆桩的支护形式。详细介绍了三轴搅拌桩、土钉墙、旋喷锚杆桩的施工以及土方开挖的施工优化。工程实际效果表明,采用这种支护形式,完全能满足设计和施工要求,基坑变形在允许范围内。During the foundation excavation of a tall building, earth natural sloping and composite soil- nailed wall were adopted in shallow layers while bored piles and jet grouting anchor pile were adopted for deep layers. This paper introduces excavation optimization and construction technology of tri-axial agitating pile, soil-nailed wall and jet grouting anchor pile. Engineering practice shows that this technology can meet the requirement and the settlement was under control.

关 键 词：地下工程 高层建筑 深基坑 支护 土钉墙 施工技术 

分 类 号：TU753[建筑科学—建筑技术科学]