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T型钢半刚性连接梁柱节点抗震性能试验研究

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Keywords: T型钢半刚性梁柱连接,拟静力,滞回性能,屈曲破坏

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Abstract:

通过对两组T型钢连接梁柱节点的单向与循环加载试验,了解该类型节点的抗震性能以及翼缘厚度对节点抗震性能的影响,并通过IDARC程序模拟节点的受荷过程,讨论T型钢连接梁柱节点理论建模的方法。试验研究表明T型钢梁柱连接滞回曲线饱满,连接表现出了良好的延性,极限转角均超过了欧洲规范规定的极限转角0.03rad,具有较为理想的抗震性能;T型钢翼缘越厚,节点初始刚度、承载力以及耗能能力越大;对于半刚性连接中螺栓刚度大于T型钢翼缘刚度的试件应按T型钢的极限承载力设计。程序分析表明利用刚度均匀变化的节点板模拟T型钢的半刚性连接具有较高的模拟精度,通过调整节点板底部刚度以及屈服弯矩可以模拟不同翼缘厚的T型钢半刚性连接。

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