软土地层深基坑施工对邻近地铁车站区间的影响分析
Analysis on the Influence of Deep Foundation Pit Construction in Soft Soil Stratum on Adjacent Subway Station Interval
杨潇 1刘波1
作者信息
- 1. 中电建重庆勘测设计研究院有限公司,重庆 401329
- 折叠
摘要
某软土地层深基坑南侧邻近既有地铁车站区间,深基坑开挖卸载会对地铁的安全运营产生不利影响.文章采用有限元方法建立深基坑-车站-区间三维数值模型,研究深基坑开挖施工对车站区间的影响,结果表明:基坑开挖引起的最大地层变形为 16.9 mm,区间隧道最大变形为 4.6 mm,车站风亭最大变形为3.8 mm,均满足变形限制要求,基坑支护结构选型合理且可行.
Abstract
The south side of a deep foundation pit in soft soil stratum is adjacent to the existing subway station in-terval.The excavation and unloading of deep foundation pit will have an adverse influence on the safe operation of the subway.This paper adopts the finite element method to establish a three-dimensional numerical model of deep foundation pit-station-interval to study the influence of deep foundation pit excavation on station interval.The re-sults show that the maximum stratum deformation caused by foundation pit excavation is 16.9 mm,the maximum deformation of interval tunnel is 4.6 mm,and the max-imum deformation of station pavilion is 3.8 mm,which all meet the requirements of deformation limitation.The selection of foundation pit support structure is reasonable and feasible.
关键词
深基坑施工/车站结构/区间隧道/数值模拟/变形Key words
deep foundation pit construction/station structure/interval tunnel/numerical simulation/deforma-tion引用本文复制引用
出版年
2024
NETL
NSTL
万方数据