组合拱式管桥整体可靠性分析

Entirety Reliability Analysis for Combination Arch Pipe Bridge

针对组合拱式管桥各构件的载荷效应和构件抗力对管桥整体结构性能的影响关系，将组合供式管桥简化成一个对称的由拱支墩、拱脚和拱顶3个单元结构组成的串联结构体系，应用系统可靠性评价的基本方法建立起了组合拱式管桥整体可靠性分析的基本模型，然后通过模糊综合评判法导出了计算组合拱式管桥整体可靠度的公式，并给出了应用实例。

Using the fundamental method of system reliabilityappraisal the authors set up the basic model for thecombination arch pipe bridge entirety judgmentmethod. The authors deduce the formlllas to ca1cu-late the entirety reliability of the combination arcpipe bridge and give the applied example.