基于能量被动耗能结构抗震设计方法的研究  

Study on energy based seismic design method for structure with passive energy dissipation system

作　　者：樊长林[1,2] 张善元[2] 路国运[2] 

机构地区：[1]太原城市职业技术学院,山西太原030027 [2]太原理工大学土木工程学院,山西太原030024

出　　处：《地震工程与工程振动》2013年第4期140-147,共8页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(11072167);山西省自然科学基金项目(2008021006)

摘　　要：将结构前两阶振型各自等效为单自由度,采用模态pushover分析确定各等效单自由度的屈服强度系数和延性系数,然后由反应谱计算各阶振型耗散能量需求,利用各振型能量分布曲线,求得各层耗散能量需求,叠加得到各层地震总能量需求,据此确定耗能装置的类型及设计参数。运用该方法对9层钢框架进行了设计,并通过非线性动力分析进行了验证,结果表明该方法精确度符合实际工程需求。Equivalent single-degree-of-freedom （ESDOF） systems for the first two modes are converted. Modal yield strength and ductility coefficients of the ESDOF system are determined and the distribution of hysteretic energy in each story is got by modal pushover analysis. The energy contribution of each mode is determined using energy spectra and the required amount of energy dissipation is estimated and used to design appropriate energy dissipation system. The application of the method is illustrated by an example of a nine-story steel frame with passive energy dissipation system design. The resuhs from the proposed method agree with the results from the non-linear time-his- tory analysis.

关 键 词：被动耗能结构 基于能量抗震设计 模态pushover分析 耗能装置 

分 类 号：TU311.3[建筑科学—结构工程] TU391