结构模糊可靠度的计算方法  

Calculation Method of Fuzzy Reliability of Structures

作　　者：温馨 田丰 解丰铭 Wen Xin;Tian Feng;Xie Fengming(School of Civil Engineering,Liaoning University of Petroleum and Chemical Engineering,Fushun Liaoning 113001)

机构地区：[1]辽宁石油化工大学土木工程学院,辽宁抚顺113001

出　　处：《现代工业经济和信息化》2022年第9期260-262,265,共4页Modern Industrial Economy and Informationization

摘　　要：结构可靠性研究的主要目的是掌握结构在某种规定条件下是否能完成指定的功能。经典可靠性理论已经发展的很成熟,但其基本假设却存在一定的局限性。针对经典可靠性理论的不足,提出了一种新的模糊可靠性计算方法。该方法将模糊理论引入到经典可靠性理论中,考虑了基本变量的模糊性,并提出分别用模糊应力和模糊强度的隶属函数来确定整体事件的隶属函数,最终求得模糊事件的可靠度。The main purpose of structural reliability research is to grasp whether a structure can perform the specified function under certain specified conditions.The classical reliability theory has been developed very maturely,but its basic assumptions have certain limitations.In this paper,a new fuzzy reliability calculation method is proposed to address the shortcomings of the classical reliability theory.The method introduces fuzzy theory into classical reliability theory,considers the fuzziness of the basic variables,and proposes to use the subordinate functions of fuzzy stress and fuzzy strength respectively to determine the subordinate functions of the overall event and finally find the reliability of the fuzzy event.

关 键 词：可靠性 模糊理论 隶属函数 模糊可靠性 

分 类 号：TU311.4[建筑科学—结构工程]