混凝土结构正常使用极限状态可靠度模糊概率分析

讨论了影响结构正常使用极限状态可靠度的不定性因素，提出了考虑结构正常使 用允许限值模糊性的当量随机化计算方法，并以钢筋混凝土构件最大裂缝宽度极限状 态为例说明了本文方法的应用。分析结果表明，按照本文方法，不仅可在一定程度上 简化结构正常使用极限状态可靠度的计算，而且还能确定出荷载效应和等效抗力的验 算点值，进而便于确定荷载效应和等效抗力的分项系数．建立使用极限状态的实用设 计表达式。

Fuzzy Prohability Analysis of Reliability at Serviceability Limit States of Reinforced Concrete Structures

Some uncertainties which affect the reliability of a structure in service ability limit states are discussed and a reliability analysis method for serviceability limit states of a reinforced concrete structure by transferring a fuzzy variable into equivalent random variable has been proposed.The application of the proposed method has been illustrated by taking maximum crack width limit state and maximum deformation limit state as examples. It is shown that the proposed method might be simpler in calculation and the checking points of load effects and the equivalent resistance could be determined, so that partial safety factors of load effects and the equivalent resistance could be further determined and the practical design formulas could be established.