附设黏滞阻尼器的仿古建筑混凝土枋-柱节点动力性能试验研究

发布时间：2018-01-15 03:13

本文关键词：附设黏滞阻尼器的仿古建筑混凝土枋-柱节点动力性能试验研究　出处：《振动与冲击》2017年17期 　论文类型：期刊论文

【摘要】：为研究附设黏滞阻尼器的仿古建筑混凝土枋-柱节点在地震作用下的抗震性能,设计制作了3个仿古建筑混凝土枋-柱节点,包括2个附设黏滞阻尼器的有控结构试件,1个未附设黏滞阻尼器的无控结构对比试件,对其进行动力试验。观察试件的受力过程及破坏特征,分析其受力机理及破坏模式,并研究了其荷载-位移滞回曲线、骨架曲线、承载能力、刚度退化等力学特性。试验结果表明:附设黏滞阻尼器的仿古建筑混凝土枋-柱节点抵御外荷载的能力明显高于未附设黏滞阻尼器的无控结构,屈服荷载提高幅度平均值约为27.4%,极限荷载提高幅度平均值约为22.4%;附设阻尼器的有控结构位移延性及耗能能力均优于无控结构,且有控结构的骨架曲线在达到极限荷载之后的下降段更为平缓;极限荷载时,有控结构的等效黏滞阻尼系数提高幅度约为27.3%~30.8%,说明附设黏滞阻尼器的仿古建筑混凝土枋-柱节点具有更为优越的抗震性能。
[Abstract]:In order to study the seismic behavior of the concrete Fangfangzhou-column joints with viscous dampers, three Fangfangzhou-column joints were designed and manufactured. Two controlled structure specimens with viscous dampers and one uncontrolled structure with no viscous dampers were tested by dynamic test. The mechanical process and failure characteristics of the specimens were observed. The load-displacement hysteretic curve, skeleton curve and load-bearing capacity are studied. The experimental results show that the concrete Fangle-column joints with viscous dampers are more capable of resisting external loads than those of uncontrolled structures without viscous dampers. The average value of yield load is about 27.4m, and that of ultimate load is 22.4m. The displacement ductility and energy dissipation capacity of the controlled structure with dampers are better than those of the uncontrolled structure, and the falling section of the skeleton curve of the controlled structure is more gentle after reaching the ultimate load. Under ultimate load, the equivalent viscous damping coefficient of controlled structures is increased by about 27.30.8%. The results show that the concrete Fangfang-column joints with viscous dampers have better seismic performance.
【作者单位】：西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金(51208411) 陕西省科学技术研究发展计划(2013KW23-01)
【分类号】：TU37
【正文快照】： 仿古建筑作为中华民族建筑风格与地域建筑特色方面的传承载体,是具有良好推广应用前景的探索与创新,对目前我国城市发展、建设具有重要的意义。当前对仿古建筑的研究还处于起步阶段。薛建阳等[1]进行了传统风格建筑钢结构梁-柱节点试验研究;高延安等[2]对环境激励下古建筑飞云

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