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工程力学  2013 

薄钢板PEC柱-钢梁端板对拉螺栓连接滞回性能试验研究

DOI: 1000-4750(2013)06-0107-09, PP. 107-115

Keywords: 薄钢板组合截面PEC柱,削弱截面,端板对穿螺栓,滞回性能,弯曲刚度,耗能与延性,破坏模态

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Abstract:

薄钢板组合截面PEC柱-钢梁连接中节点,采取工字梁端截面削弱、端板与预拉对穿高强螺栓的连接方式,考虑组合柱布置与梁削弱截面位置变化作为设计参数,对3个PEC柱-削弱梁、短端板对穿螺栓连接中节点1∶0.625缩尺模型进行低周反复荷载下的滞回性能试验。观察各个试件试验中的破坏过程,通过实测数据分析,得到了该类框架连接节点的滞回性能、强度与转动刚度退化、延性与耗能能力和破坏模式。结果表明:由于预拉对穿螺栓的设置,所有试件均表现出不同程度的自复位效果和良好的转动与耗能能力;节点的破坏模式为钢梁削弱截面或连接部位附近截面屈服。研究进一步丰富了PEC柱-钢梁连接的研究成果,为PEC柱-钢梁组合结构设计规范的制订和工程应用提供了理论依据。

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