基于能量原理的超限高层建筑结构抗震分析
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摘要
由于仅采用强度和位移两项评估指标,基于性能的抗震设计方法并不足以全面描述结构抗震性能及破坏特性,本文将结构的耗能能力也同时作为超限高层建筑结构抗震性能的评估指标之一,以结构的能量时程反应来描述结构在地震作用下的抗震性能。在结构满足强度和位移指标的情况下,把结构的能量分析作为抗震性能评估的一种补充分析,以强度、位移、能量分析等综合指标来全面综合评估结构的抗震性能。
Due to the only two evaluating indexes of strength and displacement,It is hard to describe the seismic capacity and damage property of building structure for the performance-based seismic design method.In this paper,the energy dissipation capacity was chosen as one of the evaluating index for the seismic performance of super high-rise buildings.The structural performance under earthquake was described based on the energy reaction within time histories.The energy analysis,as one of the supplemental analysis for seismic performance evaluation,would be able to give an overall evaluation for building structure through the combination of strength,displacement,and energy indexes.
引文
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