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工程力学  2015 

考虑粘结-滑移与剪切作用的钢筋混凝土柱侧向变形分析

DOI: 10.6052/j.issn.1000-4750.2013.12.1219, PP. 128-135

Keywords: 钢筋混凝土柱,粘结-滑移,剪切作用,侧向变形,宏单元模型

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Abstract:

钢筋混凝土柱在地震作用下发生弯剪破坏或剪切破坏,是结构丧失轴向承载能力甚至突然倒塌的重要原因。大量的试验研究显示钢筋混凝土柱总侧向变形由弯曲变形、粘结-滑移变形、剪切变形三种变形分量组成,这三种分量的共同作用决定了钢筋混凝土柱的受力变形反应。该文基于对构件变形分量研究,提出考虑粘结-滑移与剪切作用的钢筋混凝土柱侧向变形的宏单元模型。该模型模拟了静力反复荷载下的3个钢筋混凝土柱的试验模型,并对构件受力过程中各变形分量的变化以及各分量在总变形中的贡献进行了分析。结果表明该模型可以较准确的模拟水平荷载作用下剪切控制构件的受力变形反应全过程。

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