竖向不规则结构的抗震性能评估  

Seismic performance evaluation for a vertical irregular structure

作　　者：张凯[1] 刘洪兵[1] 王巍峰[1] 刘玮[2] 

机构地区：[1]西北工业大学力学与土木建筑学院,西安710072 [2]西安工业大学建筑工程系,西安710032

出　　处：《振动与冲击》2009年第7期175-178,共4页Journal of Vibration and Shock

摘　　要：基于模态Pushover方法和等强度延性需求谱理论,给出了竖向不规则结构评估的方法和步骤。通过模态Pushover方法,以考虑竖向不规则结构在地震作用下高振型的影响,利用等强度延性需求谱对等效单自由度体系进行计算,得到其延性和位移需求,并转化为多自由度体系的位移需求。利用上述方法对典型的竖向不规则结构算例进行了分析计算,结果表明该方法能够有效应用于竖向不规则结构的计算。Based on the modal pushover analysis(MPA)and the constant-strength ductility demand spectrum method,the basic solving process of a vertical irregular structure was put forward.Using the modal pushover analysis,the influence of higher modes could be taken into account.Using the constant-strength ductility demand spectrum method,the ductility and displacement demand of the equivalent single degree of freedom system were obtained,then they were trans-lated into the displacement demand of a multi-degree of freedom system.Using these methods the examples of typical ir-regular vertical structures were analyzed,the results demonstrated that these methods could be used in the seismic per-formance calculation of a vertical irregular structure effectively.

关 键 词：竖向不规则结构 模态Pushover方法 等效单自由度 等强度延性需求谱 

分 类 号：TU311[建筑科学—结构工程]