带腹板耳板的顶底角钢螺栓连接钢框架-中心支撑体系抗震性能研究  

RESEARCH ON THE SEISMIC BEHAVIOR OF CONCENTRICALLY BRACED STEEL FRAME WITH TOP-AND-SEAT ANGLE BOLTED CONNECTIONS WITH WEB’S EAR PLATE

作　　者：杨融谦 周学军[2] YANG Rongqian;ZHOU Xuejun(School of Civil Engineering,Shandong University,Ji’nan 250014,China;School of Civil Engineering,Shandong Jianzhu University,Ji’nan 250101,China)

机构地区：[1]山东大学土建与水利学院,济南250014 [2]山东建筑大学土木工程学院,济南250101

出　　处：《钢结构（中英文）》2019年第12期1-8,共8页Steel Construction（Chinese & English）

基　　金：山东省墙改节能专项基金重大项目(鲁财建指[2014]139号)

摘　　要：带腹板耳板的顶底角钢螺栓连接是一种装配化程度较高的半刚性节点。为探讨不同支撑类型下半刚性钢框架-中心支撑结构的抗震性能,基于带腹板耳板的顶底角钢螺栓连接,对两榀带有交叉形中心支撑或人字形中心支撑的半刚性钢框架试验试件进行了拟静力试验,研究其在低周往复荷载作用下的滞回性能、承载能力及破坏机制。利用有限元软件ABAQUS对试验过程进行数值模拟分析,与试验结果进行对比并说明了误差产生的原因。研究结果表明:半刚性钢框架-支撑体系采用交叉形支撑或人字形支撑时均表现出良好的抗震性能,钢框架与支撑体系协同工作性能良好;支撑先于钢框架破坏,结构具有两道抗震防线;支撑体系为结构整体提供了80%~82%的侧向刚度;该体系采用人字形支撑时比采用交叉形支撑表现出更好的耗能能力。The top-and-seat angle bolted connection with web’s ear plate is a semi-rigid joint whose assembly degree is high. In order to explore the seismic behavior of semi-rigid steel frames with different types of brace, based on the top-and-seat angle bolted connection with web’s ear plate, quasi-static test was conducted on two semi-rigid steel frames with X-shaped central braces or chevron central braces to study their hysteresis behavior, bearing capacity, and failure mechanism under quasi-static loading were studied. The numerical simulation was carried out by ABAQUS to check the test results, and the causes of error were analyzed. The results showed that the semi-rigid steel frames with X-shaped braces or chevron braces both had good seismic behavior, the braces cooperated with steel frame well in resisting the lateral load;the braces failed ahead of steel frame which made the structure had two seismic fortification lines;the braces system accounted for 80-82 percent of total lateral stiffness;the semi-rigid steel frame with chevron braces had better energy dissipation capacity than that of the X-shaped braced frame.

关 键 词：半刚性节点 钢框架 支撑 拟静力试验 数值模拟 抗震性能 

分 类 号：TU3[建筑科学—结构工程]