Seismic Performance Analysis Of Frame Shear Wall Structure With Frame Conversion

In the last ten years,under the background of the rapid and sustainable developm ent of China’s comprehensive economy,the theoretical practice of high-rise building str ucture has been changing rapidly,and the functions of the comprehensive building stru cture required by human beings have become more and more.From the point of view of the use of the function of the building,in general,the lower structure needs the 1 ayout of large space column network,used as catering,shopping malls and other com mercial places,in the upper and middle of the structure of the building is generally used as residential and office space.From the aspect of structural design,the structural force components in the lower and upper part of the structure will appear incoherent,the column distance of the upper and lower column is not consistent.In order to meet the functional requirements of this building,the transformation layer structure was invented to realize the demand of people’s structure.This paper mainly studies the effect of the opening rate of the shear wall and the height of the conversion layer on the structure of the frame shear wall with the conversion layer,the type of the conversion layer is the beam-type conversion layer.In this paper,the conversion layer is set in the position of two,three and four layers,and the opening rate of the cutting wall in the Y direction is 0%,14.3%and 28.7%,respectively.Five structural models were established,and the seismic performance of the largest floor displacement,the largest inter-layer displacement angle and the self-vibra tion cycle of the structure were analyzed by the vibration-type decomposition reaction spectrometry,so as to obtain the effect of the opening rate of the shear wall and the height of the conversion layer on the seismic performance of the structure,and all the results of the analysis met the specification requirements.Then the flexible time range analysis method and the elastic plastic time time time analysis method to supplement the calculation,according to the relevant design specifications,choose an artificial wave and two natural waves,analysis of the structure of the maximum floor displaceme nt and the largest inter-layer displacement changes.By comparison analysis,the following conclusions can be drawn:(1)The change of the setting height of the conversion layer will not affect the seismic performance of the building structure,and the setting height of the conversion layer can not be limited.The results of the numerical simulation are consistent with the theory that the set height of the frame conversion layer does not have an impact on the seismic performance aspects of the structure.(2)The greater the opening rate of the shear wall,the worse the seismic perform ance of the structure,the increase in self-vibration cycle,and the increase in the displ acement angle of the largest layer and the largest floor.When the opening rate of the shear wall reaches more than 20%,the seismic performance of the structure is obvio usly adversely affected,which causes harm to the stability of the structure under the influence of earthquake.In the design of the structure of the shear wall,the opening rate of the shear wall should be controlled between 0%and 20%,to maintain the structure of the anti-side stiffness.(3)According to the influence of each seismic wave on the structure,the envelope is finally processed,the maximum value is analyzed and compared,and the results of the analysis of the vibration-type decomposition reaction spectrum are basically con sistent.The opening rate of the shear wall has a relatively large adverse effect on the seismic performance of the structure,and the opening of the shear wall should be avoided in the engineering design,or the opening area should be controlled to maintain sufficient stability.