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应用弹塑性反应谱对IDA方法的改进研究

, PP. 64-69

Keywords: 弹塑性反应谱,IDA,屈服强度系数,SPO

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Abstract:

针对传统IDA方法中结构的加速度反应远高于SPO分析结果的现象,采用弹塑性反应谱作为IDA的烈度度量,同时给出随地震烈度改变而不断变化的屈服强度系数,提出了改进的IDA方法,更有效地考虑了结构的非线性地震反应特征.实际工程分析表明,改进的IDA方法能够体现结构的非线性受力反应,同时兼顾结构的动力反应特征,与SPO曲线和由规范计算得到的结构承载力有更好的可比较性.

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