高强钢筋混凝土异形柱中节点抗震性能试验研究  

EXPERIMENTAL RESEARCH ON SEISMIC BEHAVIOR OF INTERIOR JOINTS OF SPECIAL-SHAPED COLUMNS WITH HIGH-STRENGTH REINFORCED CONCRETE

作　　者：戎贤[1,2] 杨春晖[1] 张健新[1,2] 

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]河北省土木工程技术研究中心,天津300401

出　　处：《工业建筑》2017年第6期22-25,33,共5页Industrial Construction

基　　金：天津建委科技项目(2015-2);河北省高等学校科学技术研究项目(QN2017042)

摘　　要：基于X形配筋增强的高强钢筋异形柱中节点和在同一条件下无X形配筋的高强钢筋异形柱中节点的低周反复荷载试验,分析对比异形柱中节点的破坏特征、滞回曲线、承载力、位移及延性、刚度退化、耗能能力等抗震性能指标。研究结果表明,配置HRB500高强钢筋异形柱中节点比配置600 MPa级高强钢筋的中节点承载能力低,但变形能力强,刚度退化延缓;在核心区应用X形配筋,可以改善高强钢筋异形柱中节点的破坏特征,增强其变形能力和耗能能力,延缓试件的刚度退化,提高异形柱中节点抗震性能,核心区应用X形配筋对配置HRB500高强钢筋的试件抗震性能提高效果更明显。The interior joints of special-shaped columns with high-strength reinforced concrete,and with or without Xshaped reinforcement were tested based on quasi-static load. The failure characteristics,hysteretic curves,bearing capacity,displacement,ductility,stiffness degradation and energy dissipation capacity were analyzed. The results showed that for the interior joints of special-shaped columns,the bearing capacity of the HRB500 joint was lower while the hysteretic deformability increased,the stiffness degradation would slow down. When X-shaped high-strength reinforcement added to the joints,the failure characteristics of the joint was ameliorated,the stiffness degradation was retarded,the deformability and energy dissipation capacity were increased,the seismic behavior of special-shaped column joints was improved obviously,and the seismic behavior of the HRB500 joint was improved more.

关 键 词：异形柱 中节点 高强钢筋 X形配筋 抗震性能 

分 类 号：TU352.11[建筑科学—结构工程] TU375.3