江西建材Issue(3)：151-153,160,4.
公路隧道围岩型钢支架受力特性变化规律研究
Study on the Variation of Stress Characteristics of Steel Support in Highway Tunnel Surrounding Rock
张博1
作者信息
- 1. 四川沿江宜金高速公路有限公司,四川 凉山 615000
- 折叠
摘要
Abstract
In order to optimize the structural parameters of steel bracket in the surrounding rock of highway tunnel,this paper takes a highway tunnel project in Sichuan Province as an example,and systematically analyzes the pressure distribution rules of different positions of steel bracket through monitoring technology.The results show that with the increase of the distance between the palm surface and the monitoring sec-tion,the curve of the distance between the wall rock pressure-palm surface and the monitoring section can be divided into three stages:rapid increase,sudden drop and almost stable.When the distance between the palm surface and the monitoring section is about 3 m,the surrounding rock pressure of the steel bracket in the arch,the side end of the arch and the side end of the arch is the highest.With the increase of the dis-tance between the palm and the monitoring section,the surrounding rock pressure at the joint of the shaped steel support and the arch foot in-creases rapidly,then decreases slightly and then becomes stable.The pressure of surrounding rock at the joint and arch foot of the section steel support is relatively high,so it is necessary to enhance the mechanical properties of the section steel support in the surrounding rock of highway tunnel by strengthening the material stiffness at the joint and arch foot of the section steel support.关键词
公路隧道/围岩结构/型钢支架/监测/力学特性Key words
Highway tunnel/Surrounding rock structure/Steel bracket/Monitor/Mechanical property分类
交通工程引用本文复制引用
张博..公路隧道围岩型钢支架受力特性变化规律研究[J].江西建材,2025,(3):151-153,160,4.
