摘要
文章以某高速公路20座连拱隧道为工程背景,采用有限元法分别对Ⅱ～Ⅳ类三种围岩、四种埋深、三种施工方法的整体式直中墙连拱隧道施工全过程进行了数值模拟分析,得出了施工全过程中墙内力的变化规律及影响因素,并在此基础上提出了连拱隧道的中墙厚度数据,为设计提供参考。
Considering 20 twin- bore tunnels on an expressway, numerical simulation analysis has been carried out by adopting finite element method for the whole construction process of them. The tunnels are build by three different construction methods, embedded in surrounding rocks grade Ⅱ～Ⅳ with four different overburden depths. Variation of internal forces of the middle wall and its affecting factors in the whole process of construction are revealed. On the basis, the design considerations for the thicknesses of the middle wall of twin - bore tunnels are put forward which can be referred to by similar design.
出处
《现代隧道技术》
EI
北大核心
2006年第5期60-65,共6页
Modern Tunnelling Technology
关键词
连拱隧道
有限元
中墙内力
Twin- bore tunnels
Finite element
Internal forces of the middle wall
