【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。更多还原

【Abstract】 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.更多还原