摘要
某深基坑工程周边环境复杂,基坑两侧距离城市道路主干线只有3m,放坡距离小;另外两侧埋有上下水管道和热力管道,不能放坡。施工中按深度采取上下两种支护方法,上部土钉支护、下部采用桩、锚支护;同时充分利用场地,在可以放坡的两边进行放坡,减少挖方量。采用深层搅拌桩止水帷幕,降水采用坑内管井密布降水井疏干地层水的方式。工程实践表明,通过采取该综合支护技术,取得了较好的支护效果。
The surrounding environment of some deep foundation is complex.The distance between two sides of the foundation and urban road is just 3 meters while there are water pipe and thermal pipeline buried in the other sides.Comprehensive bracing technique as soil nail support used in upper part and pile anchor support used in lower part while putting slop in suitable place to reduce excavation quantity is adopted.Waterproof curtain of deep mixing pile and densely covered wells for precipitation are adopted.Engineering practice shows that good effect is obtained according to the comprehensive bracing technique.
出处
《施工技术》
CAS
北大核心
2011年第4期30-33,共4页
Construction Technology
关键词
深基坑
土钉支护
桩锚支护
止水帷幕
降水井
deep foundation
soil nail support
pile anchor support
waterproof curtain
precipitation well