Study On Seismic Design Method Of Rocking Infilled Wall-frame Structure

The wobble infilled wall frame structure is a new structural system,which is installed on the foundation by partially swaying infill wall and two side frame columns,so that it has horizontal shear capacity and becomes the main stress component controlling the structural deformation.When subjected to external excitation,the wall before swing its performance with the ordinary infilled wall frame can obviously change not much difference between the swing,the failure mode of reinforced concrete frame structure,reduce the deformation of the underlying structure of the degree of concentration,interlaminar deformation tends to be uniform,improving the ductility of the structure,to achieve the overall structure failure.This paper fills in the framework of swing wall structure,numerical simulation using SAP2000 software,with a 6 storey reinforced concrete frame structure as an example,the nonlinear static analysis method comparison of rocking wall frame structure,filled with ordinary filling performance difference of wall frame structure and pure frame structure.According to the code for seismic design of buildings GB5011-2010(2016),the wobble infill wall frame structure is designed in two stages,namely,the internal force change under the frequent earthquake intensity and the maximum interstorey displacement angle under the rare earthquake intensity.At last,in view of the problem of the "swaying" of the wall to improve the ductility of the frame beam,the corresponding structural measures need to be taken.The purpose of this study is to explore a simple and easy to use design method for practical engineering,and to provide reference for the design researchers.The results show that: in the event of seismic elastic stage,swing filled wall frame structure design method according to the current ordinary infilled frame structure as the design basis,but because the swing filled wall layout,making some changes in the internal force of beams and columns,filling the amplification coefficient of wall frame structure design need to be multiplied by different multiples in swing to meet the performance requirements;in the case of rare earthquake,swing in different earthquake acceleration and the maximum drift angle has a linear relationship between the infilled wall frame structure;swing filled wall frame structure as the frame column and the baseof infill walls on both sides of the relaxed constraint,under lateral load when the column bottom lift,vertical displacement and angle change on both sides of the frame beam is connected with the larger of frame beam is required to improve,by the end of the beam stirrups encryption area to improve the beam span The ductility of the structure improves the seismic performance of the structure.