摘要
针对在分析结构可靠度影响因素中随机性与模糊性的问题,引入模糊数学的理论,同时考虑相关影响因素,利用AHP-模糊二级综合评判法计算考虑抗力和荷载效应的模糊状态约束水平值,结合验算点法计算结构构件的模糊可靠度指标区间,对横向排架结构构件进行模糊可靠度分析。结果表明:AHP-模糊综合评判法可确定构件抗力与弯矩效应统计参数的模糊程度,可靠度指标对荷载效应的变化更为敏感,从而对横向排架构件的模糊可靠度指标区间进行计算,研究模糊可靠度计算方法在工程中具有一定的实际应用意义。
Aiming at the problems of randomness and ambiguity in the analysis of the influence factors of structural reliability,this paper introduces the theory of fuzzy mathematics,considers the relevant influencing factors,and uses the analytic hierarchy process and fuzzy two-level comprehensive evaluation method to calculate the fuzzy state constraints that consider the resistance and load effects.The horizontal value,combined with the check point method,is used to calculate the fuzzy reliability index interval of the structural members,and the fuzzy reliability analysis is performed on the horizontally arranged structural members.The results show that:AHP-fuzzy comprehensive evaluation method can be used to determine the ambiguity of the statistical parameters of component resistance and bending moment effects.The reliability index is more sensitive to changes in load effects,and the fuzzy reliability index interval of lateral row members is calculated..The fuzzy reliability calculation method studied in this paper has some practical application significance in engineering.
作者
田喆
李帅
TIAN Zhe;LI Shuai(Chongqing Jiao-tong University,Chongqing 400074,China)
出处
《广东水利水电》
2020年第5期12-18,共7页
Guangdong Water Resources and Hydropower
