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建筑结构基于性能的抗震评估的等ζy延性谱法

, PP. 54-58

Keywords: 能力谱法,弹塑性需求曲线,延性需求谱,基于性能的抗震评估

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Abstract:

利用水平地震作用下单自由度体系的运动方程,以屈服承载力系数ζy为参量,推导出适时延性系数动力方程,从而建立了基于屈服承载力系数的延性需求谱。结合结构的非线性静力pushover分析,提出了基于性能的抗震评估方法――等ζy延性谱法。用等ζy延性谱法对一个6层钢筋混凝土框架结构进行了抗震评估,并与非线性时程分析进行了比较。结果表明,用等ζy延性谱法对结构进行抗震性能评估是可行的,并且具有较高的精度。

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