摘要
随着城市轨道交通的快速发展,涌现出越来越多紧邻既有地铁车站的基坑工程,为确保地铁车站的安全运营,以呼和浩特市新华广场基坑工程为背景,采用MIDAS GTS NX有限元软件研究基坑开挖施工对临近既有地铁车站结构水平、竖向变形的影响。计算结果表明,基坑开挖过程中,地铁车站最大水平位移出现于车站紧邻基坑侧的中间层部位,且在施工中各个阶段引起的车站水平位移均大于竖向位移,竖向位移相对较小,其数值仅占水平位移的13%左右,两者均在变形控制标准范围内。
With the rapid development of urban rail transit,there are more and more foundation pit projects adjacent to existing subway stations.In order to ensure the safe operation of subway stations,relying on the foundation pit project of Xinhua Square in Hohhot City,the influence on the horizontal and vertical deformation of the adjacent existing subway station structure is studied with the help of the MIDAS GTS NX finite element software.The calculation results show that during the excavation of the foundation pit,the maximum horizontal displacement of the subway station appear in the middle part of the station adjacent to the foundation pit,and the horizontal displacement caused by each stage of construction is larger than the vertical displacement.The vertical displacement is relatively small,accounting for only about 13%of the horizontal displacement,and both are within the range of deformation control standards.
作者
李刚
邸光明
王楠
刘杰
Li Gang;Di Guangming;Wang Nan;Liu Jie(China Railway Investment and Construction Group Co.,Ltd.,Beijing 101300,China;China Railway Tenth Group Construction Engineering Co.,Ltd.,Jinan Shandong 250000,China;School of Civil Engineering,Inner Mongolia University of Science and Technology,Baotou Inner Mongolia 014010,China)
出处
《山西建筑》
2023年第23期75-78,共4页
Shanxi Architecture
基金
内蒙古青年科技英才(NJYT22067)。
关键词
基坑开挖
近接工程
数值模拟
既有车站变形
foundation pit excavation
adjacent engineering
numerical simulation
deformation of existing station
