摘要
以土江冲隧道为背景,采用FLAC3D软件对复合式曲中强连拱隧道施工过程进行了数值模拟,得到了隧道初期支护的变形特征、锚杆的轴力、初期支护及二次衬砌的应力状态,分析了复合式曲中墙连拱隧道衬砌结构的力学特征,对该隧道二次衬砌的安全性进行了评价。
To take Tujiangchong Tunnel of Changji Expressway as engineering background,the tunnel construction of multi-arch tunnel with composite curve middle-wall was simulated by FLAC3D. The deformation characteristics of primary lining,axial forces of rock bolts,the stress of primary lining and secondary lining structure were obtained. The mechanical characteristics of lining structure in multi-arch tunnel with composite curve middle-wall were analyzed and the safety of secondary lining structure was evaluated in this tunnel.
出处
《科学技术与工程》
2010年第17期4325-4329,共5页
Science Technology and Engineering
关键词
复合式曲中墙
连拱隧道
衬砌结构
受力特性
数值分析
composite curve middle-wall multi-arch tunnel lining structure mechanical characteristics numerical analysis
