剪力墙转换结构分析下建筑抗震性能研究

Analyzing the Seismic Performance of Buildings by Considering Shear-wall Transfer Structures

传统的动力弹塑性分析法在研究剪力墙的抗震性能时,忽略了对剪力墙转换结构关键结点的有效分析,导致建筑抗震性研究结果存在局限性。提出剪力墙转换结构关键结点对建筑抗震性能影响的分析方法。塑造剪力墙转换结构平面布置图,确定剪力墙转换结构关键结点,分析剪力墙转换结构关键结点的层间位移与位移角和关键结点处的楼层剪力,关键结点位置上升使得最大楼层的位移减小、位移角也逐渐变小。根据关键结点处于不同楼层时层间位移、位移角以及受力作用的不同,获取建筑结构上下层刚度的波动。实验结果说明,所提方法能够高精度、高效的对建筑抗震性能进行分析。

The traditional dynamic elastoplastic analysis method limits the results of studies on the seismic performance of buildings given that this approach fails to analyze the key nodes of the shear-wall transfer structure effectively.A method for analyzing the influence of the key nodes of shear-wall transfer structures on the seismic performance of buildings is proposed.The plane layout diagram of the shear-wall transfer structure is created,and the key nodes of the shear-wall transfer structure are determined.Then,the interstorey displacement and displacement angle of the key nodes and floor shear at the key nodes are analyzed.Elevating the key node position decreases the displacement of the maximum floor and the displacement angle.The fluctuation in the stiffness of the upper and lower floors of the building is obtained on the basis of differences in interstorey displacement,displacement angle,and force on the key nodes of different floors.Experimental results show that the proposed method can effectively and precisely analyze the seismic performance of buildings.