变量相关情况下结构可靠指标的简化算法
Simplified Algorithm of Structural Reliability Index under Condition of Correlated Variables
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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.Abstract: Based on the geometrical meaningof 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 precisio
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Key words:
- correlated variable /
- nonlinearity /
- reliability index /
- direct iteration /
- contribution value method
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