| 结构可靠度计算的实用二次二阶矩法 |
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| 引用本文： | 李炜,康海贵. 结构可靠度计算的实用二次二阶矩法[J]. 水运工程, 2008, 0(12) |
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| 作者姓名： | 李炜 康海贵 |
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| 作者单位： | 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024 |
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| 摘 要： | 针对结构可靠度二次二阶矩法中曲率计算难度大,不便于工程推广的情况,利用矩阵理论建立了求解曲率的表达式,无须再从求解矩阵特征值的途径求解曲率值,简化了计算过程,提出了适应变量独立或相关情况的实用二次二阶矩法,算例验证了其精度和实用性。
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| 关 键 词： | 可靠指标 功能函数 二次二阶矩法 |
An approximate second-order second-moment method for structures |
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| LI Wei,KANG Hai-gui. An approximate second-order second-moment method for structures[J]. Port & Waterway Engineering, 2008, 0(12) |
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| Authors: | LI Wei KANG Hai-gui |
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| Abstract: | An approximate second-order second-moment method(SORM) for structures with independent or dependent random variables is investigated.A closed calculation form of the curvature is given based on the theory of matrix.The present method needs no eigen value analysis.Through the numerical example presented,the proposed method is found to be sufficiently accurate in its inclusion of the independent or dependent random variables,in structural reliability analyses with minimal additional computational effort. |
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| Keywords: | reliability index performance function SORM |
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