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基于性能的抗震设计思想越来越多地运用于工程设计尤其是超限高层建筑结构抗震设计中,但现行国家规范对性能设计的规定仅考虑宏观层面的层间位移角及使用承载力对构件进行控制,而不涉及到构件的变形。建立满足《建筑抗震设计规范》(GB 50011—2010)规定的弹性设计的钢框架-核心筒模型,并使构件应力比尽可能接近1.0。利用FEMA 356中的性能指标,对结构进行性能化分析。分析结果表明,有必要同时采用层间位移角及构件变形进行基于性能的抗震设计。
Performance-based seismic design ideas are increasingly used in engineering design, especially in over-limit high-rise building seismic design, but the current national norms on performance design requirements only consider the macroscopic layer displacement angle and the use of bearing capacity of the component Control, without involving the deformation of the components. Establish a steel frame-core tube model that meets the elastic design requirements of Code for Design of Seismic Design of Buildings (GB 50011-2010) and make the component stress ratio as close to 1.0 as possible. The performance was analyzed using the FEMA 356 performance metrics. The results of the analysis show that it is necessary to perform the performance-based seismic design using both the layer displacement angle and the component deformation.