【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 ,给出了相应的算例更多还原

【Abstract】 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.更多还原