边缘纵筋对暗柱型钢焊接装配式剪力墙抗震性能影响

为进一步研究暗柱型钢焊接连接的预制装配式剪力墙的抗震性能,在原试验基础上,通过有限元软件ABAQUS建立其非线性分析模型,与原试验的破坏模式、滞回曲线等对比,对模型的可行性进行验证,并通过应力云图、滞回曲线等参数分析不同的边缘构件纵筋直径对墙体承载力和变形的影响。结果表明:有限元剪力墙模型能较好地模拟试验,吻合程度良好;随着边缘构件纵筋直径的增加,墙体的承载力、耗能等都提高,当钢筋直径增大到一定程度后,剪力墙的承载力增加变得缓慢;增大边缘构件纵筋直径,可以提高预制装配式剪力墙的抗震性能。

Effects of Edge Longitudinal Reinforcement on Seismic Performance of Welded Assembled Shear Wall with Dark Column Steel

In order to further study the seismic performance of prefabricated shear walls connected by concealed column steel welding, a nonlinear analysis model was established by finite element software ABAQUS on the basis of the original test. Compared with the failure mode and hysteretic curve of the original test, the feasibility of the model is verified, and the influence of different longitudinal rib diameters of edge members on the bearing capacity and deformation of the wall is analyzed through stress nephogram, hysteretic curve and other parameters. Through comparative analysis, the finite element shear wall model can simulate the test well with good agreement. With the increase of the diameter of the longitudinal reinforcement of the edge member, the bearing capacity and energy consumption of the wall increase. When the diameter of the reinforcement increases to a certain extent, the bearing capacity of the shear wall increases slowly. Increasing the diameter of longitudinal ribs of edge members can improve the seismic performance of prefabricated shear walls.