摘要
为出行方便,许多城市新建工程选址在地铁沿线,但基坑开挖卸荷会对周围土层产生影响,并引起邻近既有构筑物产生偏移、变形和沉降,严重者甚至发生开裂破坏。因此,本文以重庆轨道交通三号线观音桥至红旗河沟区间的某基坑工程为例,通过三维数值分析的方法,研究了基坑施工对近距地铁隧道的影响,通过轨道结构截面安全与裂缝宽度验算分析隧道变形的安全性,以期为类似工程提供参考。
In order to make travel more convenient, many new construction projects are located along metro lines in city,however The excavation and unloading of new foundation pits will have an impact on the surrounding soil and cause the displacement, deformation and settlement of adjacent existing structures. Therefore, this paper took a foundation pit project between Guanyin Bridge and Hongqi River Gully of Chongqing Rail Transit Line 3 as an example to study on the influence of foundation pit excavation near subway tunnel by the three-dimensional numerical analysis method, the safety of tunnel deformation was proved by checking the cross-section safety of track structure and the crack width. It could provide a reference for similar projects.
作者
翁承显
刘东双
WENG Cheng-xian;LIU Dong-shuang(T.Y.Lin International Engineering Consulting(China)Co.,Ltd,Chongqing 401121,China;College of Civil Engineering/Chongqing University,Chongqing 400045,China)
出处
《山东农业大学学报（自然科学版）》
北大核心
2020年第1期110-113,共4页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
基坑施工
地铁隧道
安全性
Foundation pit excavation
subway tunnel
safety
