| 变量相关情况下结构可靠指标的简化算法 |
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| 引用本文： | 李斌,严松宏.变量相关情况下结构可靠指标的简化算法[J].西南交通大学学报,2004,39(2):147-151. |
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| 作者姓名： | 李斌 严松宏 |
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| 作者单位： | 1. 西南交通大学土木工程学院,四川,成都,610031;兰州交通大学土木工程学院,甘肃,兰州,730070
2. 兰州交通大学土木工程学院,甘肃,兰州,730070 |
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| 摘 要： | 根据可靠指标的几何意义，通过坐标转换和矩阵变换，探讨了非线性功能函数在变量相关条件下可靠指标的直接迭代计算方法，导出了计算可靠指标的分位值法迭代计算公式，并给出了2个算例，计算结果表明，与传统算法相比，该算法计算简单、精度高。
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| 关 键 词： | 相关变量 非线性 可靠指标 直接迭代 分位值法 |
| 文章编号： | 0258-2724(2004)02-0147-05 |
Simplified Algorithm of Structural Reliability Index under Condition of Correlated Variables |
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| LI Bin.Simplified Algorithm of Structural Reliability Index under Condition of Correlated Variables[J].Journal of Southwest Jiaotong University,2004,39(2):147-151. |
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| Authors: | LI Bin |
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| Abstract: | Based on the geometrical meaning of structural reliability index, the direct iteration calculation of a nonlinear function under the condition of correlated variables was discussed by using coordinate transformation and matrix operation. The calculation formulas based on the contribution value method was derived, and two numerical examples were given. The calculational results show that compared with the traditonal algorithms, this algorithm is simple in calculation and high in precision. |
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| Keywords: | correlated variable nonlinearity reliability index direct iteration contribution value method |
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