Tensile reliability analysis for gravity dam foundation surface based on FEM and response surface method
Tensile reliability analysis for gravity dam foundation surface based on FEM and response surface method
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DOI：
10.3882/j.issn.1674-2370.2010.02.011
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发表时间：
2010-06
影响因子：
4
通讯作者：
Tongchun Li;Dan Li;Zhi-qiang Wang
中科院分区：
文献类型：
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作者：
Tongchun Li;Dan Li;Zhi-qiang Wang
建立了重力坝建基面抗拉可靠度分析的极限状态方程。以可能裂缝长度作为作用效应，以容许裂缝长度作为极限状态下的抗力。采用非线性有限元法确定了重力坝建基面裂缝长度，并采用基于正交试验设计的线性响应面法进行可靠度计算，为正常使用极限状态可靠度的计算提供了一种合理、简便的方法。以龙滩碾压混凝土重力坝为例进行了计算分析。采用11因素2水平的正交试验设计，计算了拉伸可靠度。分析表明，该方法是合理的。
In this study, the limit state equation for tensile reliability analysis of the foundation surface of a gravity dam was established. The possible crack length was set as the action effect and allowable crack length was set as the resistance in the limit state. The nonlinear FEM was used to obtain the crack length of the foundation surface of the gravity dam, and the linear response surface method based on the orthogonal test design method was used to calculate the reliability, providing a reasonable and simple method for calculating the reliability of the serviceability limit state. The Longtan RCC gravity dam was chosen as an example. An orthogonal test, including eleven factors and two levels, was conducted, and the tensile reliability was calculated. The analysis shows that this method is reasonable.