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钢框架结构连续倒塌分析模型及应用

Keywords: 连续倒塌,改变传力路径法,非线性分析,局部破坏

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Abstract:

采用集中塑性铰模型模拟构件的材料非线性特征,建立平面钢框架结构的非线性倒塌模型,对某平面钢框结构分别进行了线弹性及非线性的连续倒塌分析,并将两者的计算结果进行了比较.结果表明,线弹性分析可以利用DC指标判定结构中的最薄弱部位,非线性方法可得到坍塌时结构的所有破坏部位,并可确定最终的坍塌破坏范围.

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