大开间异形柱框架的地震反应谱分析  

Seismic Analysis of Reinforced Concrete Large-bay Frames with Specially-shaped Columns by Seismic Spectrum

作　　者：焦俊婷[1] 王石榴[1] 林轶红[1] 

机构地区：[1]嘉应学院土木工程系,广东梅州514015

出　　处：《嘉应学院学报》2005年第6期90-93,共4页Journal of Jiaying University

基　　金：嘉应学院校级重点项目(05KJZ06)

摘　　要：运用有限元软件ANSYS,对大开间钢筋混凝土异形柱框架进行了动力特性和地震反应谱分析.得到结构的自振频率、振型特点;以及结构在8度抗震设防情况下水平位移沿楼层高度分布曲线、楼层剪力沿楼层高度分布曲线.比较了纯异形柱框架与底层矩形上部异形柱框架的地震反应谱分析结果,表明底层矩形上部异形柱框架能够改善结构底部的抗震性能.The dynamic characteristics and seismic response spectrum analysis of reinforced concrete frames with specially- shaped columns are discussed by using the general structural analysis software ANSYS. The free - vibration frequencies and characteristics of the structure are obtained. Under the condition of seismic fortification intensity 8, Some seismic response property curves are drawn, for example, distribution curve of horizontal displacement varying with building height, and distribution curve of story shearing force varying with building height. From comparing the seismic response spectrum analysis of the pure specially-shaped column frame with that of the bottom - story rectangular - column frame, earthquake - resistance of the bottom - story reetangular- column frame is better than that of the pure specially-shaped column frame.

关 键 词：ANSYS软件 异形柱框架 地震反应谱分析 

分 类 号：TU311.3[建筑科学—结构工程]