摘要
地铁车站明挖施工中会打破原有岩层状态而影响邻近管线安全性,为控制地铁的明挖施工导致邻近管线变形,结合福州某工程案例,利用两阶段法及整体数值分析法,研究明挖动土对邻近管线的影响。结果表明:本文的两阶段分析简化公式及整体数值分析法的精准性与实际监测相吻合,即随着地铁基坑开挖,距车站边缘8—10m位置出现较大沉降,且横向位移影响规模为地铁施工纵深的2倍。同时经整体数值分析法得出邻近管线沉降处于安全状态,表明该方法可有效指导施工并为相关工程提供借鉴。
The open cut construction of subway station will break the state of the original rock stratum,thus affecting the safety of adjacent pipelines.In order to control the deformation of adjacent pipelines caused by open excavation of subway,this paper studies the influence of open excavation on adjacent pipelines by using two-stage method and integral numerical analysis method combined with a project case in Fuzhou.The results show that the accuracy of the simplified two-stage analysis formula and the overall numerical analysis method is consistent with the actual monitoring.That is to say,with the excavation of the subway foundation pit,a large settlement occurs 8-10m away from the station edge,and the influence scale of the lateral displacement is twice of the subway construction depth.At the same time,the overall numerical analysis method shows that the settlement of adjacent pipelines is in a safe state.It shows that the method can effectively guide the construction and provide reference for related projects.
作者
王余鹏
韩伟
WANG Yupeng;HAN Wei(Fujian Forestry Vocational Technical College,Nanping Fujian 353000,China)
出处
《佳木斯大学学报（自然科学版）》
CAS
2021年第1期7-12,35,共7页
Journal of Jiamusi University：Natural Science Edition
基金
福建省中青年教师教育科研项目(JAT191258)。
关键词
地铁车站
探地雷达
邻近管线
数值模拟
subway station
ground penetrating radar
adjacent pipeline
numerical simulation
