渝黔高速公路天坪丘隧道稳定性分析  

Stability Study on Tian-ping-qiu Tunnel in Expressway from Chongqing to Guiyang

作　　者：刘亚辉[1] 刘元雪[1] 吴梦军[2] 谢锋[3] 王培勇[1] 

机构地区：[1]后勤工程学院建筑工程系,重庆400041 [2]重庆交通科研设计院,重庆400067 [3]重庆交通学院土木建筑学院,重庆400074

出　　处：《地下空间与工程学报》2006年第5期847-850,共4页Chinese Journal of Underground Space and Engineering

基　　金：国家自然科学基金(50309017);重庆市科委资助

摘　　要：山区隧道由于受地形及展线限制,一些较短的隧道常常选用连拱结构型式。本研究借助三维有限元计算机模拟,对渝黔高速公路天坪丘连拱隧道的稳定性进行了系统的研究。根据工程实际,构建了三维计算模型,进行了应力、位移与塑性区分布等方面的计算。通过整体、衬砌与中墙的拉应力、剪应力、位移与塑性区结果分析,表明该隧道是稳定的,但应注意局部的应力集中问题,建议对这些关键部位加强监测。The multi-arch tunnel is often adopted in the construction of short tunnel in mountain area, due to the restriction of landform and road line. By means of three dimensional numerical simulation, the stability study of Tianpingqiu tunnel on the expressway from Chongqing to Guiyang is carried out. The 3 - D computation model is established according to actual engineering, the calculation results for stress, displacement and plastic zone were obtained. The analysis of computation results for the total model, liner and middle -wall show that the tunnel is stable, whereas the stress concentration exists in some part, and the monitoring should be reinforced in these sections.

关 键 词：隧道 连拱隧道 有限元 弹塑性 数值模拟 

分 类 号：U45[建筑科学—桥梁与隧道工程]