摘要
通过ANSYS程序采用弹塑性有限元模型及合理的计算参数,模拟分析地铁站前或站后折返线区间双连拱隧道分步施工过程中围岩体应力场和位移变形状况,以及支护衬砌结构的受力与变形规律。重点介绍了双连拱隧道结构设计与施工优化措施。
Through the calculation using the elastic -plastic finite element model (ANSYS program), the numerical simulation of displacements and the maximum principal stresses in the ground during the step-excavation of a double-arch tunnel on the metro back-turning line is performed. And the distribution laws of stress and deformation in the lining are also analyzed. The design and construction of the double-arch tunnel are discussed finally.
出处
《隧道建设》
2007年第S2期268-272,共5页
Tunnel Construction
关键词
折返线
双连拱隧道
结构选型
分析
back-turning line
double-arch tunnel
selection of structural type
analysis
