铁道标准设计2019，Vol.63Issue(1)：92-98,7.DOI:10.13238/j.issn.1004-2954.201807090004
我国铁路隧道通用图结构安全性的计算研究
Calculation and Study on the Structure Safety of Railway Tunnel Standard Drawings of China
肖明清 1徐晨 1王少锋1
作者信息
- 1. 中铁第四勘察设计院集团有限公司, 武汉 430063
- 折叠
摘要
Abstract
The existing railway tunnels in China are mostly designed based on standard or general drawings, and these standard or general drawings are designed with engineering analogy method, which, as a result, fails to give definite structural safety factor. In order to provide technical support for tunnel design optimization and existing tunnel maintenance, the general safety factor design method of composite lining is used to check the safety factors of the previous standard drawings or general reference diagrams of China, and the main factors affecting the safety are analyzed. The research conclusions are as follows: (1) The general safety factors of railway tunnel standard drawings compiled in China after 2008 are higher and have certain optimization space; while the total safety factors of 140 km/h single track electrified railway tunnels standard drawings compiled in 20 th century are relatively low in weak surrounding rock area; ( 2) The depth of the tunnel has great influence on the safety factor, and the degree of groundwater development has a great impact on the durability. It is suggested that the corresponding support parameters should be adopted according to the different depth and the development degree of groundwater; ( 3) The tunnel sectional form has great influence on safety factor. Therefore, reasonable sectional form should be taken according to the surrounding rock pressure distribution pattern.关键词
铁路隧道/复合式衬砌/安全系数计算/地下水/耐久性Key words
Railway tunnel/Composite lining/Calculation of safety factor/Groundwater/Durability分类
交通工程引用本文复制引用
肖明清,徐晨,王少锋..我国铁路隧道通用图结构安全性的计算研究[J].铁道标准设计,2019,63(1):92-98,7.
