某深大基坑支护体系应用研究  

Application Study of the Large and Deep Foundation Pit in a Building

作　　者：赵书宁[1] 

机构地区：[1]保利房地产(集团)股份有限公司,广州510308

出　　处：《广东土木与建筑》2010年第11期43-46,共4页Guangdong Architecture Civil Engineering

摘　　要：本文结合广州某深大基坑支护工程实例,介绍了"钻(冲)孔桩+1道混凝土支撑+2道预应力锚索"支护体系,并详细阐述了止水桩、钻孔桩、预应力锚索等施工工艺,监测结果表明基坑位移及沉降均满足规范及设计要求,最后对深大基坑施工中应注意的事项提出了合理建议,为类似的大型深基坑支护工程施工提供参考。Taking one large and deep foundation pit project in Guangzhou as an example,the support structure employs drilling piles and one piece of reinforced concrete strut and two pieces of pre-stressed anchor ropes.And the construction procedures including sealing piles,drilling piles and pre-stressed anchor ropes are introduced detailedly.By means of monitoring,a conclusion is drawn that the excavation deformation and settlement meet standard and design requirements.Moreover,several improving suggestions for large and deep foundation pit construction procedure are given in this paper.It provides guidance for similar projects.

关 键 词：预应力锚索 深大基坑 止水帷幕 支护 

分 类 号：TU473.1[建筑科学—结构工程]