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为研究钢框架-钢板剪力墙结构(SPSW)在弹塑性状态下层剪力的分布,该文设计了4个具有理想屈服模式的SPSW结构。考虑了结构层数、近场地震的速度脉冲效应及远场地震加速度累积循环效应的影响,采用弹塑性时程分析方法获得了SPSW结构在两类地震作用下层剪力分布的平均值,提出了SPSW结构弹塑性状态的层剪力分布模式,并同已有的层剪力分布模式进行了对比。分析表明:地震波的近场速度脉冲效应及远场加速度循环效应对SPSW结构的层剪力影响较大,层剪力分布模式应考虑其影响。该文建议的层剪力分布模式在精度上优于其他层剪力分布模式,基于能量的抗震设计方法可采用该文建议的层剪力分布计算结构楼层的耗能。
In order to study the distribution of shear in the elastic-plastic state of steel frame-steel shear wall (SPSW), four SPSW structures with ideal yield modes were designed. Considering the effect of the structure layer number, the velocity pulse effect of near-field earthquakes and the cumulative cyclic effect of far-field seismic acceleration, the average shear stress distribution of SPSW structures under two kinds of earthquakes is obtained by elasto-plastic time history analysis SPSW structural elastic-plastic shear distribution model and compared with the existing shear distribution model. The analysis shows that the near-field velocity pulse effect and the far-field acceleration cyclic effect of the seismic wave have a great influence on the layer shear of the SPSW structure, and the influence of the layer shear force distribution mode should be considered. The suggested layer shear distribution model is better than other layer shear distribution models in accuracy. The energy-based seismic design method can be used to calculate the energy consumption of structural floors using the proposed layer shear distribution.