浅析福州北站南广场工程西楼深基坑换撑结构

摘要

The two technical proposals of unchanging-support and support exchange for the deep foundation pit of West Tower of Fuzhou North Station South Square Project are put forward,and the finite element simulation for the technical proposal of unchanging-support and support exchange is carried out.Based on the comparison and analysis of deep horizontal displacement of campshed,reinforcement of guard post,safety of foundation pit,exposure time of pit bottom and economy,it makes sure that using rigid angle support exchange technology is the best proposal,which can provide reference for construction technology for support exchange of deep foundation pit supporting project.%提出了福州北站南广场工程西楼深基坑无换撑与换撑技术方案,对无换撑与换撑技术方案进行有限元模拟,从排桩深层水平位移、围护桩配筋、基坑的安全性、坑底的暴露时间、经济性等方面进行方案对比分析,从而确定采用刚性角换撑技术为最佳方案,可为深基坑支护工程换撑施工技术提供参考.