两层轻钢龙骨体系动力特性及地震位移反应分析  

Analysis of Dynamic Properties and Seismic Displacement Response of 2-storey Light Gauge Steel System

作　　者：王小平[1] 段晨[1] 石红雷[1] 

机构地区：[1]武汉理工大学土木工程与建筑学院．武汉430070

出　　处：《武汉理工大学学报》2012年第2期80-84,共5页Journal of Wuhan University of Technology

基　　金：国家科技部国家支撑计划(2006BAJ04A02-15)

摘　　要：由于和传统钢结构形式有差别,轻钢龙骨体系在计算地震剪力时,自振周期按《荷载规范》附录中的经验公式取值不尽合理,有必要对这种结构形式的动力特性及地震位移反应进行研究。以一两层格构轻钢龙骨教学楼为例,采用有限元软件ABAQUS对结构进行了整体建模,得到其前20阶自振频率及前3阶振型,分别采用底部剪力法和时程分析法分析了结构的地震位移反应,并进行了比较,为结构设计和计算提供方便。As the difference with the traditional steel,it is not quite reasonable to take the vibration period base on the empirical formula in the ＂Load Code＂ appendix when calculating the seismic shear for the light gauge steel system.It is necessary to take a research to the dynamic properties and seismic displacement responses of such kind of steel structure.In this paper,a 2-storey light gauge steel teaching building was taken as an example.The finite element software ABAQUS was selected to build the whole structural analysis model,and the top 20 natural frequencies and the former 3 vibration modes were provided.The bottom shear way and time-history analysis method were separately used to calculate the seismic displacement responses,and the calculation results were given and compared.The research results can provide convenient for the structural design and calculation.

关 键 词：格构轻钢龙骨体系 有限元 自振周期 位移 地震反应 

分 类 号：TU392.5[建筑科学—结构工程]