【摘 要】
：
为了研究墙肢钢板暗支撑的设置形式对带钢板暗支撑混凝土核心筒抗震性能的影响,完成2个核心筒试件的低周往复加载试验.试验结果表明,采用每层设置钢板暗支撑的方式,核心筒试件表现出更好的承载能力、变形能力及耗能能力.利用OpenSees有限元软件,在此试验研究的基础上建立带钢板暗支撑混凝土核心筒试件的非线性有限元分析模型,模拟结果与试验结果吻合较好.为了进一步研究带钢板暗支撑混凝土核心筒的恢复力特性,根据正交试验的方法,设计16组核心筒试件,基于有限元计算结果提出以屈服点、峰值点、极限点为特征点的三折线骨架曲线模
【机 构】
：
湖南大学土木工程学院,湖南长沙410082
论文部分内容阅读
为了研究墙肢钢板暗支撑的设置形式对带钢板暗支撑混凝土核心筒抗震性能的影响,完成2个核心筒试件的低周往复加载试验.试验结果表明,采用每层设置钢板暗支撑的方式,核心筒试件表现出更好的承载能力、变形能力及耗能能力.利用OpenSees有限元软件,在此试验研究的基础上建立带钢板暗支撑混凝土核心筒试件的非线性有限元分析模型,模拟结果与试验结果吻合较好.为了进一步研究带钢板暗支撑混凝土核心筒的恢复力特性,根据正交试验的方法,设计16组核心筒试件,基于有限元计算结果提出以屈服点、峰值点、极限点为特征点的三折线骨架曲线模型,通过分析和回归给出骨架曲线上各特征点的计算方法以及恢复力曲线的卸载刚度和加卸载规则.经验证表明,建议的恢复力模型考虑了多种影响因素,计算结果既接近工程实际又应用简便,为带钢板暗支撑混凝土核心筒结构进行弹塑性分析及工程应用提供了理论依据.
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