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工程力学  2014 

钢管混凝土组合结构全螺栓隔板贯通节点的抗震性能试验研究

DOI: 10.6052/j.issn.1000-4750.2013.05.0442, PP. 116-123

Keywords: 工程结构,钢管混凝土,节点试验,梁柱节点,隔板贯通,抗震性能

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Abstract:

该文以方形钢管混凝土柱—H型钢梁全螺栓隔板贯通连接节点为研究对象,以梁偏心为参数,进行了2个足尺的节点试件SJ1和SJ2的低周往复荷载试验,研究了该类型节点的破坏机理与抗震性能。通过试验数据处理与分析得出了该节点类型的破坏机理、滞回曲线、骨架曲线、延性系数、耗能能力及刚度变化规律;通过隔板应变分析验证了试件的破坏机理。试验结果表明:该类型节点具有很好的抗震性能,节点承载力高,滞回曲线饱满,延性系数较大,耗能能力强等特点;主要变形发生在梁端塑性铰区域,隔板与柱连接处容易出现应力集中现象。两组节点在设计时均考虑了抗震设计要求,破坏形式基本相同,以隔板端部梁翼缘及腹板屈曲破坏为主,但由于SJ2梁存在偏心,在荷载作用下节点下隔板与柱连接处被撕裂。

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