【摘要】 针对目前进行渡槽结构风险分析尚不多见的情况 ,以南水北调中线工程澧河段梁式渡槽为例 ,分析阐述了渡槽结构的破坏失效风险 ;并按渡槽下部摩擦桩与土体之间 ,上部槽身各部位 ,如侧板、底板、底梁等 ,逐一进行了其可能的破坏模式的分析 ,建立了相应的功能函数 ,在考虑相同部位各破坏模式之间具有相关性的条件下 ,计算出各部位的可靠指标。最后 ,把上部槽身作为整体 ,运用三维随机有限元进行三种工况下槽身的可靠性分析 ,得出了若干有益的结论。更多还原

【Abstract】 In this paper, the risk of girder aqueduct str ucture over the Lihe River for the South-North Water Transfer Project as an example is analyzed. Every parts of the structure are studied. The failure modes and failure functions are established. Reliability index is calculated. Then stochastic finite element method is used to analyze the whole aqueduct body structure. Some useful conclusions are got.更多还原