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工程力学  2015 

耗能梁段与带楼板RC框架梁连接节点的滞回性能研究

DOI: 10.6052/j.issn.1000-4750.2013.05.0390, PP. 47-55

Keywords: Y型偏心支撑,RC框架,楼板,耗能梁段,抗震加固,滞回性能

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Abstract:

通过对5个足尺耗能梁段与带楼板RC框架梁连接节点的低周往复加载试验,研究了此类节点的传力机理、破坏模式等,分析了连接节点的滞回性能、承载力、变形及延性、刚度退化及耗能等性能,并通过ABAQUS有限元程序对试验试件的滞回性能进行模拟。研究结果表明:U型外包钢连接节点构造简单、传力可靠。考虑楼板作用可显著提高耗能梁段与RC梁连接节点的承载力及后期变形能力。耗能梁段端板同RC梁顶面之间的分离导致滞回曲线中部捏缩,滞回性能劣化,耗能能力一般。

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