临近既有建筑物深基坑支护变形控制

Deformation Control of Deep Foundation Pit Support Near Existing Buildings

随着城市的快速发展,人们对空间的要求越来越高,地面空间已被充分利用,地下空间开发利用已成为必然。而地下空间的开发利用必然涉及到基坑工程,本文结合重庆沙坪坝铁路枢纽改造工程中超大深基坑支护技术难点研究,分析了基坑开挖的变形机理,提出支护设计方案及施工监测控制,取得了良好的效果,可为城市立体空间利用的基坑支护提供有益参考。

With the rapid development of cities,people's requirements for space are becoming higher and higher.Ground space has been fully utilized,and the development and utilization of underground space has become inevitable.The development and utilization of underground space inevitably involves foundation pit engineering.This article combines the research on the technical difficulties of ultra large deep foundation pit support in the Chongqing Shapingba Railway Hub Renovation Project,analyzes the deformation mechanism of foundation pit excavation,proposes support design schemes and construction monitoring control,and achieves good results.It can provide useful reference for the foundation pit support of urban three-dimensional space utilization.