摘要
通过建立有限元计算模型，运用荷载分级、变刚度迭代非线性有限元法，系统研究了有压隧洞衬砌与围岩之间的相互作用．探讨了锚杆支护、衬砌与围岩之间接缝大小和接触角变化对衬砌、围岩承载能力的影响．根据建立的模型，对一隧洞工程进行了三维非线性有限元计算，获得了一些具有工程指导意义的结论．
Interaction between lining and surrounding rockmass for pressure tunnel is systematically studied by establishing the finite element computation models and utilizing changing stiffness iteration method under multi stage load.We probe the effect of bolt supporting,interface width and variation of contact angle on load bearing capacity of lining and surrounding rockmass.According to the established models,we carry out 3 D non linear FEM computation for a tunnel project and get some conclusions of guide significance for engineering.
出处
《武汉水利电力大学学报》
CSCD
1998年第2期18-21,共4页
Engineering Journal of Wuhan University
关键词
接触角
围岩稳定性
隧洞
衬砌
相互作用
有限元
changing stiffness iteration
interface element
pre cracked element
contact angle
