基于Pushover方法的框筒结构在水平地震作用下的层间耗能研究  

Analysis of Energy Dissipation among Stories of Reinforced Concrete Frame-tube Structure under Horizontal Earthquake Based on Pushover Method

作　　者：沈蒲生[1] 朱建华[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《工程抗震与加固改造》2006年第3期1-6,共6页Earthquake Resistant Engineering and Retrofitting

基　　金：高等学校博士学科点专项科研基金资助课题(20020532010)

摘　　要：地震中输入结构的能量,首先应考虑的是它在结构层间的分布情况,层间耗能规律是结构抗震分析与设计的能量方法中的一个主要部分之一。本文通过一12层的钢筋混凝土框筒结构实例,利用pushover方法分析了其层间耗能分布规律,与非线性动力时程需要选取地震波的不确定性相比,采用该法可以减少分析时间,同时获得较为稳定的分析结果;通过改变该框筒各主要结构参数,得出了各种参数变化对结构能量集中趋势的影响。The distribution of hysteretic energy among stories should be considered first when the energy imparted to structure during earthquake is studied and it is a major part of energy method in seismic analysis and design of structures. In this paper, pushover analysis is used to get the hysteretic energy among stories of one 12-story reinforced concrete frame-tube structure, and comparison with nonlinear dynamic analysis shows that this method can reduce the time of analysis as well as get more stable result. By changing some major parameters of the frame-tube structure, the influence of these parameters on the trend of energy concentration is got.

关 键 词：转换层 钢筋混凝土框筒结构 PUSHOVER分析 层间能量分布 层间弹塑性位移 非线性动力时程分析 

分 类 号：TU311.3[建筑科学—结构工程]