剪力墙不同布置对转换结构的抗震性能研究

Study on seismic behavior of transfer structures with different arrangements of shear wall

随着人们对建筑使用功能要求的提高,转换结构被广泛应用,但其结构复杂,因此明确该类结构的受力性能尤为重要。本文利用有限元软件ABAQUS建立3个加腋梁式转换结构有限元模型,探究在相同轴压比条件下转换梁上部剪力墙不同布置位置对结构的抗震性能影响,并采用顶部竖向荷载及水平往复位移荷载共同加载的方式对结构进行加载。最终分析表明:随着转换梁上部剪力墙截面抗弯刚度的增加,结构的延性降低,对刚度退化规律无较大影响。本文结果可为类似工程设计提供有效参考。

As the demand for architectural function increasing, the transfer structures are widely used.However, the structure is complicated, thus it is significant to specify its mechanical property.In this article, three finite element models of haunched beam transfer structure are established by ABAQUS. The influence of different arrangement of shear wall on the upper part of transfer beam under the same axial compression ratio is explored by using the top vertical load and horizontal reciprocating displacement load.The results show that the ductility of the structure decreases with the increase of the flexural stiffness of the upper shear wall section of the transfer beam, which has no significant influence on the stiffness degradation law.