软弱岩层中隧道结构体系的可靠度  

Structural System Reliability for Tunnel Lining in Weak Rock

作　　者：杨林德[1] 萧蕤[1] 罗立娜[1] 

机构地区：[1]同济大学地下建筑与工程系,上海200092

出　　处：《同济大学学报（自然科学版）》2004年第6期705-709,共5页Journal of Tongji University:Natural Science

基　　金：上海市重点学科建设资助项目

摘　　要：探讨了软弱岩层中钢筋混凝土隧道结构的单截面失效模式和整体失效模式 ,对受拉和受压这 2类失效模式分别给出了极限状态方程 ,进而以条件概率和数值分析方法为基础 ,建立了体系可靠度计算的点估计法 ;结合隧道结构的设计计算 。Based on the bearing capacity of a section of reinforced concrete structural member,the failure patterns related to the structural member and structural system of renforced concrete (RC) tunnel lining in weak rock are discussed,and the corresponding limit-state equations are proposed respectively.After that,a calculation method of the structural system reliability,named Point Estimate Method,is established and its formulas are given out based on the conditional probability and numerical analysis. The calculation procedure of the structural system failure probability is also put forward.In the end, the proposed method is validated by the relevant examples of tunnel lining design calculation.

关 键 词：隧道衬砌 体系可靠度 极限状态设计 

分 类 号：U451[建筑科学—桥梁与隧道工程]