摘要
以山东省济南市顺河快速路南延英雄山隧道工程为例,通过有限元软件对穿越不同地质条件下的大断面小净距隧道进行模拟,采用CD法对施工全过程中围岩位移、地表沉降、夹岩应力、初期支护结构应力进行分析,分析结果表明:初期支护结构应力和地表沉降均处在安全范围之内;拱腰处围岩位移较大且拱腰处出现应力集中现象;采用CD法施工较为合理,可为类似工程提供参考。
Taking YingXiongShan tunnel project of Shunhe Highway for example,this article simulates the whole con struction process of Large-Section Tunnel with Small Clear Spacing under different geological conditions by Infinite el ement software.All of the displacement of surrounding rock,surface subsidence,the rock stress and the primary structure are analyzed by CD method.The results show that the initial support structure stress and surface subsidence are controlled within safe range;the surrounding rock displacement at the arch waist is larger and the stress concentration appears.It is reasonable to use CD method for tunnel construction.The paper can provide reference to similar tunnel engineering.
作者
孙杰
彭陆强
Sun Jie;Peng Luqiang(Jinan Urban Construction Group Co.,Ltd.,Jinan 250031,China;Huaqiao University,Xiamen 361021,China)
出处
《市政技术》
2020年第6期161-165,170,共6页
Journal of Municipal Technology
基金
厦门市高校产学研项目(3502Z20203045)。
关键词
隧道
大断面小净距
复合地层
CD法
合理性
tunnel
large-section tunnel with small clear spacing
mixed-ground
CD method
rationality
