【摘要】 由于长周期速度脉冲的作用,近场地震会对结构产生严重的速度和位移冲击,根据5条近场地震波建立了屈服点谱(YPS)。基于屈服点谱法方法设计了一榀K型偏心支撑钢框架结构,采用pushover方法和弹塑性时程法对所设计的结构进行了地震反应分析。结果表明,结构的屈服位移基本稳定,层间侧移比满足我国现行抗震规范的要求,结构呈现理想的梁铰屈服机构,证明了对偏心支撑钢框架进行性态设计方法的可靠性。更多还原

【Abstract】 Because of the long-period velocity pulse,the near-fault ground motion would have an intense impact on structures in the form of velocity and displacement,a total of 5 near-fault ground motion records were selected to construct the Yield Point Spectra(YPS).This paper designed a span of K-eccentrically braced steel frame based on the YPS.By the means of Pushover method and nonlinear time history method,the results showed that the yield displacement of the example was fundamentally stable,the ratio of the displacement could satisfy the deformation requirement of the seismic code of our country,and the K-EBF structure takes on the ideal progressively plastic mechanism,which proves the reliability of this new design method.更多还原