Study On The Influenceof Seismic Performance With Transformation Layer Position In Part Frame Supported Shear Wall Structure

Recent years,with the rapid development of economic construction,the high-rise buildings of frame-supported shear wall structure with transfer layer is more and more widely used in actual engineering.This kind of structure already has mature design concepts,calculation methods and experimental research,however,for the location of the conversion layer of part of the frame-supported shear wall structure,the relevant regulations are relatively vague and tend to be safe..However,with the development of the times and engineering needs,the position of the conversion layer of part of the frame-supported shear wall structure with the conversion layer is getting higher and higher,and many of them have exceeded the limits of the regulations.Therefore,it is of great practical significance to study the reasonable position of the transfer layer of the partial frame-supported shear wall structure with a transfer layer under different seismic fortification intensities.On the one hand,this article uses the general finite element software ETABS,taking a25-story,partial frame-supported shear wall structure with a transfer layer on the 4th floor as the research object.By adjusting the model,different seismic fortification intensities and different transfer layer positions Mode decomposition response spectrum analysis was carried out on 18 model calculation examples of,in order to study the structure’s self-vibration characteristics,displacement and internal force changes with the position of the conversion layer respectively;On the other hand,perform elastic time history analysis of the basic model of this paper,that is,the part of the frame-supported shear wall structure with the conversion layer on the fourth floor and the seismic fortification intensity of 7 degrees,and calculate the mode decomposition response spectrum method with the above 18 model examples.Comparative analysis of results.The research of the paper has drawn the followingconclusions and recommendations:The higher the setting position of the conversion layer,the more obvious the structural internal force and displacement change at the conversion layer,the easier it is to form a weak layer,and the worse the seismic performance of the structure;For this project,under different seismic fortification intensity,this article puts forward relevant suggestions on the reasonable location of the conversion layer;The result of the elastic time history analysis method is slightly larger than the result of the mode decomposition response spectrum method;For similar practical engineering applications,reasonable seismic structural measures should be designed for the weak layer.