Shock Absorption Performance Analysis And Optimization Design Of Building Structure

Energy absorbing technology has many advantages compared with traditional seismic design,and its application prospects are also extensive.Therefore,this paper mainly studies the influence of different structures after the viscous damper on the earthquake.The engineering case is used to analyze and summarize the seismic response of the viscous damper structure,which provides some suggestions for future design.The main research of this paper is to study the influence of the viscous damper in the energy-absorbing and damping component on the energy-absorbing and damping effect of high-level irregular structures under different parameters and different layout schemes.The main research contents are as follows: Firstly,the principle of viscous damper and the development status at home and abroad are introduced in detail.The principle is to use the additional damping ratio of viscous damper to influence the seismic performance of the structure.Then,the classification of viscous damper is summarized and summarized.And the analysis method of structure and shock absorbing structure,the main method used in this paper is FNA method;then the mechanical model of viscous damper,the main optimization design method and the determination of objective function are summarized and summarized,among which the main optimization The algorithm includes genetic algorithm and gradient method.The optimized objective function has structural interlayer displacement,acceleration and base shear force.Finally,this paper uses the finite element software SAP2000 to build 16 layers of irregular structure models for an actual project.Comparison analysis of shock absorption performance of viscous damper structures with different parameters by time history analysis method,using response spectrum analysis Time history analysis methods Comparison of the damping effect of different optimization positions viscous damper structure to draw some conclusions.The results show that after adding viscous dampers to the original structure,the displacement and internal force of each structure decrease in varying degrees,and the magnitude of reduction is uniform.Therefore,the structure with viscous dampers has better seismic effect.The structure with viscous dampers under different parameters is compared and analyzed,and it is found that the damping index of viscous dampers is smaller or the damping is smaller.When the coefficients are large,the effect of vibration reduction is better.The viscous damper structures with optimal locations are studied.It is concluded that the performance of vibration reduction of viscous damper structures isgreatly improved by response spectrum analysis and time history analysis,and the weight coefficient method with the inter-story displacement as the control function is better than the other two schemes.