摘要
Abstract
In order to analyze the influence of the type of bolting structure with spray anchor and pile support on the deformation of metro deep foundation pit,the paper studied the variation law of the ground settlement around the foundation pit of a subway foundation pit,the horizontal displacement of pile and the axial force of steel support by monitoring means.The results show that with the continuous progress of earthwork excavation,the surface settlement increases continuously and then tends to be stable.The horizontal displacement of pile top shows a rapid in-crease at first and then a stable change law.The horizontal displacement ranges from 1.9 to 16.9 mm,which is within the design require-ments.The supporting structure with envelope pile and steel support has better deformation resistance.With the increase of pile depth,the horizontal displacement of pile body increases first and then decreases.The maximum horizontal displacement of foundation pit pile body in-creases continuously,and the position is closer and closer to the pile bottom.关键词
地铁工程/深基坑工程/监测技术/支护结构/沉降量Key words
Subway engineering/Deep foundation pit engineering/Monitoring technology/Supporting structure/Settling capacity分类
交通工程
