组合拱式管桥单项可靠指标的建立

Set-up of Itemized Reliability Indices for Combined-Arched Pipe Bridge

本文探讨了组合拱式管桥载荷效应组合和结构构件抗力统计分析问题，建立了组合拱式管桥结构构件的失效准则，运用一次二阶矩中心点法推导出相应单项可靠指标的计算公式。

This paper discusses the problems on the loading response combination of combined-arched pipe bridge and the statistical analysis of the component resistance of the structure, sets up the failure criteria for the components of the structure, and derives the formulas to be used for calculating the itemized reliability indices of the pipe bridge by using the centre-point method of the first-order second-moment theory. They formulas can be used as the basis of reliability analysis and the design of combined-arched pipe bridge.