作　　者： ; ; ; ;

机构地区： 哈尔滨工业大学土木工程学院

出　　处： 《哈尔滨工业大学学报》 2009年第2期1-4,共4页

摘　　要： 为了更准确的使用位移比谱方法估计抗震结构的最大侧向非弹性位移,利用大量单自由度体系在地震记录作用下的时程分析结果给出了四种场地条件对应的平均非弹性位移比谱.得到了位移比谱的简化计算公式,并重点研究了恢复力模型对非弹性位移比谱的影响.结果表明恢复力模型的屈服后刚度对非弹性位移比谱影响显著,尤其当结构具有负刚度时,屈服后刚度的影响更趋明显. In order to accurately evaluate the maximum mum elastic displacement demands of seismic structures lastic displacement ratio spectra for four site conditions lateral inelastic displacement demands from the maxiwith the inelastic displacement spectra, the mean ineare obtained based on the dynamic analysis of SDOF subjected to a great number of ground motions, and the fitting formula of mean spectra is also presented. Then the effect of hysteretic model on the inelastic displacement ratio spectra is investigated. It is concluded that the effect of hysteretic model on spectra increases as ductility factors increases, especially for the structures with negative stiffness. The evaluation formula for the effect of hysteretic model is presented in this paper as well.

关 键 词： 非弹性位移估计 位移比谱 场地条件 恢复力模型

领　　域： [天文地球] [天文地球] [天文地球]