型钢混凝土L形柱空间角节点抗震性能试验及影响因素分析  

Experimental Investigation and Influence Factor Analysis on Seismic Performance of Steel Reinforced Concrete L-Shaped Column Space Corner Joint

作　　者：王妮[1,2] 陈宗平[3,2] 占东辉 

机构地区：[1]长安大学环境科学与工程学院,陕西西安710064 [2]广西大学工程防灾与结构安全教育部重点实验室,广西南宁530004 [3]广西大学土木建筑工程学院,广西南宁530004 [4]张家港碧桂园房地产开发有限公司,江苏张家港215611

出　　处：《应用基础与工程科学学报》2017年第3期568-583,共16页Journal of Basic Science and Engineering

基　　金：国家自然科学基金项目(50908057;51268004);中央高校基本科研业务费专项资金资助(310829161011);广西防灾减灾与结构安全重点实验室开放课题资助(2014ZDK0011)

摘　　要：通过9个型钢混凝土L形柱空间角节点模型试件的低周反复加载试验,以揭示该类节点的抗震性能指标.观察了其破坏过程及形态、得到荷载-位移滞回曲线、骨架曲线及特征点参数等抗震性能指标,并对柱截面配钢形式、轴压比、加载角度以及连接梁的结构形式4个变化参数对抗震性能的影响规律进行了深入分析.结果表明:型钢混凝土L形柱空间角节点发生了伴随扭转的节点核心区破坏;滞回曲线饱满、位移延性系数较大、耗能能力强;强度、刚度衰减退化过程缓慢,表现出较好的抗震性能.To investigate the seismic performance of steel reinforced concrete （SRC） L-shaped column space corner joint, 9 specimens were designed to carrying out the low cyclic reverse loading test, and four parameters were considered, which were column section steel disposition form,load angle, axial compression ratio and beam form. Failure patterns, load-displacement hysteretic curves and skeleton curves, and feature point parameters were obtained. The influences of vary parameters to seismic performance indicators were analyzed, which were peak load, displacement ductility, ultimate lateral angle, strength and stiffness degradation, and energy dissipation capacity. Experim shaped column space comer ental results indicate that：the failure characteristics of SRC L- joint present shear-diagonal compression and bending, and are accompanied by torsion and adhesive failure. Hysteretic curves and energy dissipation are better, comprehensive seismic performance is strength and stiffness better. are full, displacement ductility attenuation are slower, and comprehensive seismic performance is better.

关 键 词：型钢混凝土 L形柱 空间角节点 抗震性能 影响因素分析 

分 类 号：TU398[建筑科学—结构工程]