新建水工隧洞下穿既有铁路隧洞有限元分析
Finite Element Analysis of New Hydraulic Tunnels Underneath Existing Railway Tunnels
程露 1罗爽2
作者信息
- 1. 四川省亭子口灌区建设开发有限公司,四川 南充 637000
- 2. 高坪区水利工程质量安全中心,四川 南充 637100
- 折叠
摘要
采用ABAQUS有限元软件,建立新建水工隧洞下穿既有高速铁路隧洞结构三维有限元模型,通过数值模拟方法,分析新建引水隧洞开挖对既有高速铁路隧洞应力变形的影响.结果表明,穿越引起的高速铁路隧洞沉降区域主要分布在两隧洞空间交叉处,高速铁路隧洞总体沉降较小,最大沉降值 4.03mm;在引水隧洞开挖引起应力重分布的影响下,高速铁路隧洞衬砌产生的最大拉应力值约为开挖前的1.5 倍.
Abstract
The ABAQUS finite element software is used to establish a three-dimensional finite element model wearing a high-speed railway tunnel structure under the newly-built aquarium tunnel.Through the numerical simulation method,the impact of the stress deformation of the newly-built water tunnel excavation on the existing high-speed railway tunnel is analyzed.The analysis results show that the sedimentation area of the high-speed railway tunnel caused by crossing is mainly distributed in the intersection of the two tunnel spaces.The overall sedimentation of the high-speed railway tunnel is small,and the maximum settlement value is 4.03mm.The maximum tensile value generated by the high-speed railway tunnel lining is about 1.5 times before excavation.
关键词
引水隧洞/铁路隧洞/应力/变形Key words
diversion tunnel/railway tunnels/stress/deformation引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据