| The domestic demand for high-rise building structures continues to increase.At present,most high-rise buildings are mainly reinforced concrete shear walls,but they have disadvantages such as high self-weight and poor ductility.In recent years,domestic earthquakes have occurred frequently,so more attention should be paid to earthquake resistance Disaster caused brittle damage to the structure.The self-weight of the steel plate composite shear wall structure is too small,which can reduce the material consumption of the structure,increase its space utilization and improve the seismic performance.Therefore,this paper studies the application of the steel plate composite shear wall in a high-rise structure and optimizes the design.Analyze and compare the difference in seismic performance of ordinary reinforced concrete shear walls with the original structure,and consider the effect of different vertical layout methods of steel plate shear walls on the structural performance of steel plate composite shear walls.This thesis mainly carried out the following research work:(1)This paper takes an actual high-rise shear wall structure as the research object,establishes a three-dimensional model through finite element analysis software,and sets it as the original structure.On this basis,it reduces the thickness of the shear wall and improves the structural damage.From a perspective,the width dimensions of the shear walls,beams and other components at the bottom part of the original structure are appropriately reduced,and then the steel plate composite shear wall with a smaller thickness is arranged on thebottom part of the floor to improve its structural seismic performance,and the new steel plate shear force is analyzed The influence of wall structure on the macroscopic parameters and structural damage of high-rise building structure.(2)The comparative analysis of the design of different steel plate composite shear wall layout schemes and the original structure shows that the overall lateral rigidity of the new steel plate shear wall structure is improved,but the steel plate composite shear wall does not play its role in the response spectrum stage.Strong seismic performance,so the displacement response of the structure is reduced to a small extent,and the seismic effect is more obvious under rare earthquakes.After the composite shear walls with different steel plate thicknesses are arranged,the average inter-story displacement angle is reduced compared with the original structure.4.07% and 8.56%.Its apex time-history seismic response and apex acceleration are also significantly smaller than those of ordinary concrete shear wall structures of the original structure.At the same time,arranging steel plate composite shear walls on the bottom floor of the structure also reduces the plastic damage of the structure.It is rare in shear walls under earthquakes.The tensile damage of concrete is also smaller than that of the original structure.(3)By studying the different vertical layouts of the steel plate composite shear wall in the shear wall structure,it can be concluded that in the response spectrum analysis,as the number of floors at the bottom of the steel plate composite shear wall increases,the natural vibration period of the structure is reduced In rare earthquakes,with the increase in the number of floors of the steel plate composite shear wall at the bottom,the displacement response of the structure under earthquake action has been greatly reduced,and the shear resistance and lateral stiffness of the structure bottom The improvement increases the ability of the structure to resist shear deformation.However,considering the performance and economy of the structure,the number of floors of the bottom steel plate composite shear wall should not be blindly increased.This will cause a certain amount of material waste.Arranging steel plate composite shear walls in the reinforced area can improve the overall seismic performance of the structure. |
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