Abstract：Tunnel lining commonly is curve wall，and the load is complex，so load effect at each section of tunnel lining is not easily obtained. In general，numeric method is adopted to calculate the load effect. In reliability analysis for tunnel lining structure，the simple first-order second-moment method combined with stochastic finite element method is usually employed，but its precision is low. Although there are many methods of higher precision for reliability analysis，most of these methods are complicated or their calculation time is too long. They are not suitable for reliability analysis of tunnel lining structure. Hereby，it is suggested that second-order second-moment method combined with stochastic finite element method should be employed instead，and detailed formula and examples are given. Result shows that this method is of higher precision.
