新建城市道路对既有轨道隧道结构稳定性的影响分析
Analysis of the Impact of New Urban Roads on the Stability of Existing Rail Tunnel Structures
詹志晨1
作者信息
- 1. 大连市市政设计研究院有限责任公司厦门分公司,福建 厦门 361000
- 折叠
摘要
为研究新建城市道路修建及运营对既有轨道隧道结构的影响规律,确保既有轨道隧道结构的运营安全,文中以某城市道路为案例,分析新建道路对邻近隧道结构的力学影响机理与空间相对关系,基于强度折减法,采用有限元软件建立数值模型,得到新建道路穿越既有轨道隧道结构及围岩变形规律.结果表明,采取合理的工程措施后,在2 倍隧道轮廓以外修建道路时,对既有隧道结构的影响相对较小,既有隧道周边围岩处于弹性状态.
Abstract
To study the impact of new urban road construction and operation on the structure of existing rail tunnels,and ensure the operational safety of existing tunnel structures.This article takes a certain city road as an example to analyze the mechanical impact mechanism and spatial relative relationship of the new road on the adjacent tunnel structure.Secondly,based on the strength reduction method,a numerical model is established using finite element software to obtain the deformation law of the new road passing through the existing track tunnel structure and surrounding rock.It is shown that after taking reasonable engineering measures,the impact on the existing tunnel structure is relatively small when constructing roads outside the double tunnel contour,and the surrounding rock of the existing tunnel is in an elastic state.
关键词
新建城市道路/既有轨道隧道结构/围岩变形/岩体应力Key words
New urban roads/Existing track tunnel structure/Surrounding rock deformation/Rock mass stress引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据