Analysis Of Energy Dissipation And Shockabsorption Of High-Rise Twin Towers Based On Viscoelastic Dampers

In recent years,with the rapid economic development in our country,the complexity of the engineering structure forms and the increasing frequency of seismic activities,the damping control of engineering structures has become the key research direction of seismic technology of complex structures.In this paper,a new type of high damping rubber viscoelastic damper performance test,analysis of the damper performance parameters in different experimental conditions,and based on experimental data to establish a reasonable mechanical model;and finally by the dynamic time-history elastoplastic analysis of a The actual project of the high-rise twin towers Siamese structure before and after the setting of the seismic performance and economy were compared.The main contents of this thesis are as follows:(1)By testing the performance of a new type of high damping viscoelastic viscoelastic damper,the ultimate deformation characteristics,strain correlation,fatigue characteristics,temperature dependence,durability and frequency dependence of the damper were studied.The rationality of the mechanical model is judged according to the agreement between the established three-element mechanical model and the experimental hysteresis curve.(2)Through the dynamic time-history elasto-plastic analysis of a real high-rise double-column Siamese structure,the effects of the inter-story shear,the inter-story displacement and displacement angle,the top relative displacement,the acceleration and The energy consumption of the structure is comparatively analyzed,and the effectiveness of the viscoelastic damper on the vibration control of the high-rise twin towers is obtained.(3)Taking the displacement angle of the original structure as the control target,the controlled structure after "downsizing" is obtained by adjusting the dimensions of the original structural members,and the economic comparison with the original structure is carried out.By using this viscoelastic damper pair The economic effectiveness of the high-rise twin towers.