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.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2009年第2期1-4,共4页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目(90815014
50608024)
地震行业科研专项资助项目(200808021
200808073)
中国地震局地震工程与工程振动开放性实验室基金资助项目(2007001)
关键词
非弹性位移估计
位移比谱
场地条件
恢复力模型
inelastic displacement evaluation
inelastic displacement ratio spectra
site condition
hysteretic model
作者简介
翟长海（1976-），男，副教授，博士生导师；zch—hit@hit．edu．cn.
谢礼立（1939-），男，博士生导师，中国工程院院士．
