混合高强钢框架节点抗震性能参数分析  

Seismic Performance Analysis of Hybrid High-strength Steel Frame Joints

作　　者：张帅[1] 王兆强[1] 齐红丽[1] Zhang Shuai;Wang Zhao-qiang;Qi Hong-li(Yanshan University, Qinhuangdao 066004, Chin)

机构地区：[1]燕山大学,河北秦皇岛066004

出　　处：《工程抗震与加固改造》2018年第3期1-8,15,共9页Earthquake Resistant Engineering and Retrofitting

基　　金：河北省自然科学基金项目(E201503053)

摘　　要：为满足"强柱弱梁"的抗震设计原则,将低强度钢材用于钢梁,高强度钢材用于钢柱,进而形成混合高强钢框架体系。为研究这一新型钢框架节点的抗震性能,在已有试验验证的基础上,以梁柱腹板和翼缘厚度为主要参数对混合高强钢框架节点进行了循环加载有限元分析。分析结果表明:随着柱翼缘、腹板厚度的减小,节点的延性和耗能能力增强,承载能力变化不大;当减小梁翼缘宽厚比时,节点的承载力和延性明显提高,耗能能力变化不大,当减小梁腹板高厚比时,节点的延性和耗能能力均得到提高,对节点承载能力影响不大。In order to meet the seismic design principle of ＂strong column and weak beam＂,the low strength steel is used for steel girder and high strength steel for steel column,and then the mixed steel frame system is formed. In order to study the seismic performance of this new type of steel frame joint,finite element analysis of the joints of the hybrid high-strength steel frame is carried out on the basis of the existing tests and the main parameters of the girder webs and flange thickness. The results show that with the decrease of the thickness of the column and the decrease of the web thickness,the ductility and energy dissipation of the joint are enhanced and the bearing capacity is not changed. When the width ratio of the beam flange is reduced,the bearing capacity and ductility of the joint are obviously improved. The ability of ductility and energy dissipation of the joints are improved when the thickness ratio of the webs is reduced,which has little effect on the bearing capacity of the joints.

关 键 词：高强钢 混合高强钢框架 抗震性能 有限元 

分 类 号：TU352.11[建筑科学—结构工程]