【摘要】 由于混凝土面板堆石坝结构形式和坝体填筑材料物理性质的复杂性,对这类结构进行可靠度分析十分困难,目前国内外关于混凝土面板堆石坝结构可靠度方面的研究尚属罕见。首次提出用结构可靠度分析的响应面法计算混凝土面板堆石坝的可靠度,并导出了相应的计算公式,其中混凝土面板堆石坝的确定性分析采用三维非线性有限元法,可靠度分析采用二次响应面法。结合工程算例,对混凝土面板堆石坝的面板抗裂可靠度进行分析与计算,得到了较好的计算结果。与其它可靠度分析方法相比,本文提出的方法具有使用方便、计算效率高、计算精度好等优点,是对混凝土面板堆石坝进行可靠度分析的好方法,有进一步研究和推广价值。更多还原

【Abstract】 It is very difficult to get the analytic expressio n of limit state equ ation in the reliability analysis of complicated and non-linear structures suc h as concrete faced rockfill dam (CFRD).Response surface method ( R SM) is applied in analyzing the reliability of the concrete f ace slab in CFRD for the first time. CFRD is calculated by 3-D non-linear FEM and the reliability analysis of the concrete face slab in CFRD i s calculated by two-order RSM. The calculated results of an example of CFRD co nf irm the superiority in the precision and efficiency of RSM solving the reliabili ty analysis of complicated structure such as CFRD.更多还原