【摘要】 为研究人字形中心支撑钢框架(CBSF)弹塑性状态下层剪力分布,设计了6个具有理想屈服模式的CBSF结构,采用非线性动力时程分析法获得了结构在近场地震下的层剪力分布,提出了层剪力分布模式,并同已有的层剪力分布模式进行了对比。分析表明,近场速度脉冲效应对CBSF结构层剪力分布影响较大;提出的层剪力分布模式在精度上优于已有的层剪力分布模式。更多还原

【Abstract】 In order to investigate the story shear distribution of CBSF in elasto-plastic state under near-fault earthquakes, six CBSF structures with ideal yield mechanism were designed, and the story shear distribution in CBSF structures under near-field earthquakes was obtained through the nonlinear time history method. The story shear distribution in CBSF was proposed, and was also compared with the existing horizontal seismic shear distri-bution pattern. The analysis showed that near-field earthquakes with velocity pulse had important effect on the story shear distribution in CBSF. The story shear distribution proposed by this paper was more accurate than the existing story shear distribution patterns.更多还原