摘要
为了研究钢框架在地震作用下的结构反应,该文设计制作了一个两层钢框架结构模型,进行3条地震波的振动台试验,研究钢框架结构在不同等级地震波作用下的破坏形式、动力特性等力学性能。通过试验发现,钢框架在地震波作用下,整体性能保持良好;在加载的地震波加速度达到1.0g时,节点焊接处会出现明显裂缝;钢框架层间位移、层间位移角和应变随着地震波加载加速度的增加而增大;底层的层间位移角都大于顶层,表明底层受地震影响更大;钢框架各构件的拉应力和压应力呈近似对称关系。
In order to study the structural response of the steel frame under earthquake action,a two-story steel frame structure model was designed and produced to conduct shaking table tests of three seismic waves,so as to study the mechanical properties of the steel frame structure under the action of different levels of seismic waves,such as the failure form,dynamic characteristics,etc.Through the test,it’s found that the overall performance of the steel frame is maintained well under the action of seismic waves;as the acceleration rate of the loaded seismic wave reaches 1.0 g,obvious cracks will appear in the joint welding;The inter-story displacement,inter-story displacement angle and strain of the steel frame increase with the acceleration of seismic wave loading;The displacement angles between floors of the bottom layer are larger than those of the top layer,indicating that the bottom layer is more affected by the earthquake;the tensile and compressive stresses of the steel frame members are approximately symmetrical.
作者
王展光
邵建华
刘汶津
Wang Zhanguang;Shao Jianhua;Liu Wenjin
出处
《重庆建筑》
2021年第12期52-55,共4页
Chongqing Architecture
基金
贵州省科技计划项目“低屈服点金属阻尼器的抗震机理与性能化设计方法研究”(黔科合基础[2019]1288号)
贵州省教育厅创新群体重大研究项目“黔东南民族建筑研究创新团队”(黔教合KY字[2017]048)。
关键词
钢框架
地震波
振动台
层间位移
应变
steel frame
seismic wave
shaking table
inter-story displacement
strain
作者简介
王展光(1977-),男,江西九江人,博士,教授,研究方向为组合结构。
