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对JGJ99-98中竖缝剪力墙的两种等效模型进行考察,指出了考虑钢框架梁剪切变形的必要性。由于两种模型均不能正确地给出钢框架梁的剪力,也不能反映钢框架梁弯曲变形对整体刚度的影响。因此提出壁式框架计算模型,对各部分的刚度给出了计算建议,对模拟竖缝剪力墙肢的壁柱,通过对轴压刚度取小值实现竖缝剪力墙不承担竖向荷载的设计原则。对壁式框架模型和两种等效模型进行比较得出:在层数少,剪切变形占主导地位时,壁式框架模型的刚度略小,层数增加,三种模型结果相似。但壁式框架模型能够提供钢框架梁内的真实剪力,并反映钢框架梁变形对抗侧刚度的影响,最后提出在框架柱与竖缝剪力墙之间加设抗剪键以改善钢梁工作性能。
Two equivalent models of vertical shear wall in JGJ99-98 are investigated, and the necessity of considering shear deformation of steel frame beam is pointed out. Since both models can not correctly give the shear force of the steel frame beam, it can not reflect the effect of the bending deformation of the steel frame beam on the overall stiffness. Therefore, the calculation model of the wall frame is put forward, and the calculation suggestion is given for the stiffness of each part. For the vertical pillars that simulate the vertical shear wall, the vertical shear wall does not bear the vertical load Design principles. The comparison between the wall frame model and the two equivalent models shows that when the number of layers is small and the shear deformation dominates, the stiffness of the wall frame model is slightly smaller and the number of layers increases. The results of the three models are similar. However, the wall frame model can provide the real shear force in the steel frame beam and reflect the effect of the deformation of the steel frame beam on the lateral rigidity. Finally, a shear bond is added between the frame column and the vertical shear wall to improve the steel beam Work performance.