摘要
软土地区紧邻地铁深基坑的开挖会引起周围土体移动,从而对临近运营地铁隧道构成不利影响。对隧道变形控制是该类基坑工程的核心问题。以杭州某紧邻运营地铁隧道的基坑工程为背景,利用MIDAS/GTS模拟基坑开挖对隧道结构的影响,并通过了后期施工监测数据分析。初步提出了适合杭州地质特点的紧邻地铁隧道的基坑工程设计与施工要点,可供后续类似工程参考借鉴。
Excavation of deep foundation pit close to metro tunnel in the soft soil areas is bound to induce the surrounding ground movement,which usually causes an adverse impact on the adjescent operating metro tunnel,so tunnel deformation control is undoubtedly the top priority in metro project.Based on a foundation pit project adjescent to metro tunnel in Hangzhou,MIDAS/GTS is used to simulate the impact of foundation pit excavation on tunnel construction,and through statistical analysis of the construction monitoring in later phase,the main points in the design and construction of ground pit project adjescent to metro tunnel are pointed out according to the geologic characteristic of Hangzhou City.This research serves as a reference for subsequent similar projects.
出处
《城市轨道交通研究》
北大核心
2014年第8期87-94,共8页
Urban Mass Transit
关键词
软土深基坑
紧邻地铁隧道
影响分析
deep foundation pit in soft soil areas
adjescent to operating metro tunnel
influence analysis
