摘要
基坑工程常造成既有地铁隧道的变形,甚至影响地铁的正常运营,因此如何控制临近地铁隧道的基坑工程的变形就越来越受到重视。但基坑施工对地铁隧道的影响与多种因素有关。论文依据广州某临近地铁一号线的基坑工程的设计、施工和监测资料,采用有限元方法,对基坑支护的地下连续墙成槽和基坑土方开挖及各道支撑的设置对地铁隧道的影响进行研究,动态模拟各施工工况对地铁隧道的影响过程。研究表明地下连续墙成槽过程对地铁隧道的影响较小,地铁隧道受到的影响主要来自基坑的土方开挖,并对可能的影响因素进行了讨论。
The foundation pit construction often causes the deformation of existing metro tunnel,even influences the normal operation of the subway,therefore,more and more attention has paid to that how to control the deformation of metro tunnel caused by adjacent foundation pit construction.However,there are a variety of factors related about the effect on metro tunnel caused by foundation pit construction.This research in this paper by means of the field monitoring of a foundation pit construction near Guangzhou Metro Line 1,to use finite element analysis method,discussed the influence of constructing foundation pit underground diaphragm wall and earthwork excavation and set each support on adjacent metro tunnel with dynamic simulation of the effects of the construction process on metro tunnel.Research shows that constructing underground diaphragm wall has little influence on metro tunnel,the influence of metro tunnel is mainly from the foundation pit excavation,and there is a comparative analysis on each factor.
出处
《地下空间与工程学报》
CSCD
北大核心
2014年第S1期1629-1634,1639,共7页
Chinese Journal of Underground Space and Engineering
关键词
地下连续墙成槽
基坑开挖
盾构隧道
有限元分析
监测
underground diaphragm wall construction
foundation pit excavation
shield tunnel
finite element analysis
monitoring
