仿古建筑双枋-柱组合件耗能能力研究

Energy Dissipation on Antique Buildings Dual-Lintel-Column Joint

为研究仿古建筑双枋-柱节点的力学特性,结合仿古建筑形制特点,采用钢-混凝土组合结构形式,设计3个该类型试件.通过在枋-柱连接处设置黏滞阻尼器,形成附设黏滞阻尼器的仿古建筑双枋-柱组合件,对其施加荷载形式为正弦波的快速往复循环荷载.基于获得的试验结果,分析各试件的耗能能力及采用钢-混凝土组合结构形式和设置阻尼器对其耗能能力的影响.结果表明:附设阻尼器后,双枋-柱组合件试件滞回曲线较对比试件更为饱满,且其耗能能力显著提升,试件的破坏模式为弯剪型破坏形式.

In the report,in order to study the mechanical characteristics of the dual-lintel-column joint of antique buildings,based on the characteristics of the shape system of the antique building,the steel-concrete composite structure was used to design 3 specimens of this type. The viscous dampers were placed on the dual-lintelcolumn joint,and the dual-lintel-column modular unit with viscous dampers was constructed,on which the rapid reversed cyclic loading was performed with sine-wave. Based on the experiment result,the energy consumption capacity of each specimen,and the effects of the steel-concrete composite structure and viscous dampers were analyzed. The results showed that the hysteresis curve of antique buildings dual-lintel-column joint with viscous damper is fuller than that of the specimen,and whose energy consumption capacity is significantly improved,and the failure mode of the specimen is bending scissor type destruction.