地震作用下钢筋混凝土框架层间变形概率统计特性

Probability distribution of story drift of seismic RC frames

以钢筋混凝土框架结构为例 ,考虑了结构构件几何尺寸、材料弹性模量、恒荷载、活荷载和地震作用的不确定性 ;采用概率统计理论中的 K-S检验法 ,对钢筋混凝土框架结构层间变形的概率统计特性进行了分析 .结果表明 ,钢筋混凝土框架结构在地震作用下层间变形的概率统计特性 (分布类型与变异系数 )与地震作用的基本一致 ,从而为研究结构可靠度分析的近似方法提供了理论依据 .

The present paper studies the probability distribution of the story drift of seismic RC frames with the K S test method, considering the uncertainties of the earthquake action, structural member dimensions, material elastic module, dead load and live load. The results show that the probability distribution of the story drift of seismic RC frames is the same as that of the earthquake action (extreme value type Ⅱ), and their parameters are nearly the same. This solution is helpful for studying the approximate approach to the structural reliability analysis.