空心楼盖板-柱增强节点抗震性能分析  

RESEARCH ON SEISMIC BEHAVIOR OF HOLLOW FLOOR SLAB-COLUMN REINFORCED CONNECTION

作　　者：倪红梅[1] 庞瑞[2] 刘瑞 

机构地区：[1]河南城建学院土木与交通工程学院,河南平顶山467036 [2]河南工业大学土木建筑学院,郑州450001 [3]河南省城乡规划设计研究总院有限公司,郑州450044

出　　处：《工业建筑》2017年第8期78-83,共6页Industrial Construction

基　　金：国家自然科学基金项目(51208181);河南省科技攻关项目(142102210033;152102210066);河南省高等学校青年骨干教师资助计划(21420031);河南工业大学青年骨干教师培育计划(21420004)

摘　　要：为研究空心楼盖板柱节点抗震性能,在试验的基础上进行了3种节点在低周反复荷载下的数值模拟分析,对节点的破坏形式、滞回曲线、刚度退化和耗能能力等进行较为系统的研究。结果表明:平行布管方式,节点的抗震性能优于正交布管方式,正交布管方式,节点的抗震性能优于垂直布管方式;楼板钢筋和弯起钢筋对节点承载力、刚度、刚度退化和耗能能力等影响较大;型钢剪力架由于主要材料集中于截面中和轴,对提高板柱节点的受力和抗震性能效果不明显。建议工程应用中综合考虑多种方式,即采用增大柱上板带配筋率、配置弯起钢筋和型钢剪力架等方式提高板柱节点抗震性能,以实现多道抗震防线的设计要求。Numerical simulation analysis of three kinds of hollow floor slab-column reinforced connections（ SCRC）was conducted to study their seismic behavior based on experimental results from the aspects of failure mode,hysteresis curve,rigidity degeneration and energy dissipation capacity. The results showed that： seismic behavior of SCRC with the hollow-core laying direction parallel to the hidden beam was better than connections with orthogonal tube arrangement,and connections with orthogonal tube arrangement was better than perpendicular tube arrangement.The influence of slab reinforcement and bend-up bar on the connections ＇ bearing capacity, stiffness, energy dissipation capacity and stiffness degradation effect were remarkable. As the structural steel frame was near the section neutral axis,which had little effect on improving the mechanical properties and seismic behavior. It was suggested that the measures of increasing column strip reinforcement,adding bend-up bar and structural steel frame could be adopted to improve the SCRC＇s seismic behavior and to meet multiple seismic fortification line requirement.

关 键 词：空心楼盖 板-柱节点 抗冲切元件 抗震性能 数值模拟 

分 类 号：TU352.11[建筑科学—结构工程]