过街通道改造小净距临近运营地铁设计方案研究

Research on the Design Scheme of Small Clear Distance Adjacent Subway Operation for Street Crossing Passage Renovation

随着城市化的快速发展,过街通道的改造与扩建成为了城市交通规划中不可或缺的一环。特别是当改造项目涉及临近运营地铁线路时,如何确保施工过程中的安全,同时减少对既有地铁线路运营的影响,成为了一个亟待解决的问题。本文基于小净距条件下过街通道改造的实际背景,利用三维有限元软件,分析过街通道改造基坑的“分块分层”设计方案,以及运营地铁隧道结构和轨道的变形规律,旨在为类似工程提供理论支持和实践指导。

With the rapid development of urbanization,the renovation and expansion of street crossings have become an indispensable part of urban transportation planning.Especially when the renovation project involves nearby operating subway lines,how to ensure safety during the construction process while reducing the impact on the operation of existing subway lines has become an urgent problem to be solved.This article is based on the actual background of street passage renovation under small clearance conditions,and uses three-dimensional finite element software to analyze the"block and layer"design scheme of the foundation pit for street passage renovation,as well as the deformation law of the operating subway tunnel structure and track.The aim is to provide theoretical support and practical guidance for similar projects.