【摘要】 针对基于性能的抗震设计方法,指出了目前基于力分布模式的静力弹塑性分析方法中存在的问题,通过对结构进行不同地震等级的弹塑性时程分析,得出了稳定分布的侧向位移加载方式。采用基于位移加载模式的静力弹塑性分析方法评估结构弹塑性抗震性能,克服了基于水平力加载模式方法的不足。研究表明,结构进入弹塑性后,楼层水平位移的分布相对楼层水平力稳定,并且基于位移加载模式的推覆分析较基于水平力加载模式的推覆分析更接近于弹塑性时程分析结果。同时,基于位移模式的静力弹塑性分析方法也便于确定结构的层间位移。更多还原

【Abstract】 In the performance-based seismic design method,the problems of load-lateral pattern-based static elastic-plastic analysis method is pointed out.Elastic-plastic time history analysis of structures in different earthquake grades is made to obtain the stable distribution pattern of lateral-displacement.The Push-over analysis method based on diaplacement loading pattern is adopted to evaluated elasto-plastic seismic performance of structures,which overcomes the disadvantage of lateral force Loading pattern method.The study indicates that the distribution of horizontal story displacement is more stable than that of horizontal story force and the results of Push-over analysis based on displacement loading pattern are more close to that of elasto-plastic time-history analysis than that of Push-over analysis based on lateral force Loading pattern.The static elastic-plastic analysis method based on displacement distribution is much useful in determine the inter-story drift for structure.更多还原