中文摘要：

如果已知的不确定信息较少,难以得到参量的概率模型,可以考虑尝试采用非概率可靠性分析方法。首先将参量表述为区间变量的形式,通过安全域的面积与基本区间变量总面积的比值来衡量结构的可靠度。给出了不同应力强度组合关系下的非概率失效面面积的计算方法,对比分析了应力、强度分别服从均匀分布和正态分布情况下,概率可靠度和非概率可靠度之间的关系,最后通过典型算例验证该分析方法。

英文摘要：

when uncertainty information is not enough that it is so difficult to get the parameter probability model, the non- probabilistie reliability analysis method could be taken into aecout. This method described system parameters as interval variables first, measuring the system reliability through the ratio of security domain and the basic interval variables total area. Provided the calculation methods for probability of failure surface under different cases of combination of stress and intensity. Compared and analyzed the relationship between probability of reliability and non-probabilistic reliability when stress and intensity obey uniform distribution and normal distribution respectively. Finally, through typical numerical examples testified this analysis method.