福州某城际铁路区间下穿既有线的影响分析与设计控制研究
Research on the Analysis of the Impact and Design Control of Undercrossing Existing Lines in an Intercity Railway Section in Fuzhou
林明智1
作者信息
- 1. 福州轨道交通设计院有限公司 福建福州 350004
- 折叠
摘要
为了探讨城际铁路下穿既有地铁线路的影响,分析了福州某城际铁路区间下穿既有线路的设计实践项目.在分析了工程基本情况、工程地质和水文地质的基础上,对新建线路的影响范围等级进行划分.根据设计方案的总体思路和既有线本身和周边的情况,进行有限元软件分析.同时,对周围土体变形、隧道结构位移、净空收敛和内力进行分析,根据分析结果和既有线监测数据,提出下穿区间的设计控制措施.措施满足建设单位对轨道交通下穿区域的控制要求.
Abstract
In order to discuss the impact of intercity railways crossing existing subway lines,a design practice project of an intercity railway section crossing existing lines in Fuzhou was analyzed.Based on the analysis of the basic situation,engineering geology,and hydrogeology of the project,the impact range and level of the newly constructed line are classified.Conduct finite element software analysis based on the o-verall design concept and the situation of the existing line itself and surrounding areas.Analyze the deformation of surrounding soil,displace-ment of tunnel structure,convergence of clearance and internal forces.Propose design control measures for underpass sections based on anal-ysis results and existing line monitoring data.The measures meet the control requirements of the construction unit for the underpass area of rail transit.
关键词
城际铁路/下穿既有隧道/有限元分析/控制措施Key words
Intercity railway/Undercrossing existing tunnels/Finite element analysis/Control measures引用本文复制引用
出版年
2024
NETL
NSTL
万方数据