单向载荷下高层建筑钢结构梁柱屈曲特征研究  

Buckling characteristics of steel beam and column in high-rise building under uniaxial loauckling load

作　　者：吴开婷 徐小芳 WU Kaiting;XU Xiaofang(Infrastructure Management Office of Logistics Support Department,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学后勤保障部基建管理处,湖北武汉430072

出　　处：《兵器材料科学与工程》2022年第6期100-104,共5页Ordnance Material Science and Engineering

基　　金：湖北省教育厅科技项目(B2020408)。

摘　　要：为研究单向载荷下高层建筑钢结构梁柱屈曲特征,以Q235钢为材料,选不同悬臂梁、不同长度的钢结构梁柱试件,1^(#)为常规试件,2~8^(#)为骨型试件,通过试验与仿真研究单向载荷下屈曲变化。结果表明:3^(#)试件的屈服极限位移最高,5^(#)试件屈服极限载荷最大,6^(#)试件的延性比、初始刚度最大;试验与仿真模拟的极限载荷分别约为384.56、364.65 kN;6^(#)试件的刚度最好,抗载荷性能最佳;随高厚比提高,试件的屈曲载荷减小。In order to study the buckling characteristics of steel structure beam-column in high-rise building under uniaxial load,the Q235 steel beam-column specimens with different cantilever beams and lengths were selected to study the variation of buckling characteristics under uniaxial load with the aid of experiment and simulation.Among the specimens,No.1 was the traditional specimen and No.2 to No.8 were the bone-type specimens.The results show that the yield limit displacement of the No.3 specimen is the highest,the yield limit load of the No.5 bone type specimen is the highest,and the ductility ratio and initial stiffness of No.6 specimen is the largest.The experimental and simulated ultimate loads of beam and column of high-rise buildings are about 384.56 kN and 364.65 kN respectively.The stiffness of No.6 specimen is the best,and it has the best bearing capacity.With the increase of height-to-thickness ratio,the buckling load of specimen decreases.

关 键 词：单向载荷 高层建筑 钢结构梁柱 屈曲特征 有限元模拟 等效刚度 

分 类 号：TU398[建筑科学—结构工程]