【摘要】 在分析传统的灵敏度因子计算方法的基础上,提出了一种新的灵敏度因子计算方法。它解决了传统定义中难于处理的确定性设计变量与随机变量混合和多模态失效问题分析,不仅适合于只有随机变量和只有确定性变量的情况,也适合于它们的混合情况。对典型实例的计算分析表明,新方法更能反映各因素对结构失效的影响,具有较大的理论和实践意义。更多还原

【Abstract】 In the analysis of structural reliability,sensitivity estimation to each of structure variables is very important in designing,making and using structure.Various traditional approaches to calculate sensitivity factors are extensively discussed.It is argued that these definitions are incomplete.Based on theses studies,a new approach to calculate sensitivity factor is suggested.Through practical examples,it is demonstrated that this new representation is more reasonable than the traditional definitions.The new method can be used not only in the structure with random variables or determinate variables,but also in structure with combined variables with random variables and determinate variables.The potential for using such new method of calculating sensitivity factor in design decisions and making process on structure is illustrated.更多还原