Hybrid Vibration Control Of Building Structure Isolation And Tuned Mass Damper Under Horizontal Action

Earthquake disasters not only cause economic losses to people,but also cause casualties.Wind vibration disasters often occur in recent years,wind damage has caused many structural damages and even structural damage to the civil structure,which affects the normal use function.Wind disasters and earthquake disasters are the main natural disasters causing economic losses and casualties,and cause cracks,damage and even collapse of buildings.Therefore,controlling the impact of wind vibration and earthquake on buildings is of great significance.The single vibration control of the isolated and tuned mass damper(TMD)is mature,so this paper combines the isolation and tuning mass dampers to resist the effects of wind and earthquake.Using the third-stage 20-layer nonlinear steel frame Benchmark model,the research work mainly has the following aspects.(1)Establish the ANSYS finite element model of the third stage 20-layer nonlinear steel frame Benchmark.According to the characteristics of TMD damper and isolation layer,ANSYS finite element model with TMD damper,ANSYS finite element model with isolation layer and ANSYS model with isolation and TMD mixed vibration control are established respectively.(2)MATLAB was used to simulate the pulsating wind load data and dynamic time-history analysis was carried out in ANSYS.Comparison of wind-resistant vibration control effects of TMD damper,isolation,isolation and TMD hybrid vibration control.(3)When horizontal earthquake acts alone and vertical and horizontal earthquake act together,TMD damper,isolation,isolation and TMD hybrid vibration control,horizontal and vertical control effect comparison.(4)Vibration control robustness analysis of TMD damper,isolation,isolation and TMD hybrid vibration control when stiffness and mass parameters are perturbed by 15%.The results show that the horizontal displacement and the horizontal acceleration of the top layer increase slightly when the isolation layer does not yield under wind induced vibration.The TMD damper has good wind and vibration damping.Under the action of earthquake,the isolated structure has a good damping effect.The TMD damper has a certain damping effect under the action of earthquake,but the seismic damping effect is not as good as the wind damping effect.Both the isolated structure and the TMD structural system have certain damping effects,but the vibration control is less robust,and the isolation and TMD hybrid vibration control has good damping effect and vibration control robustness.When the vertical seismic action and the horizontal seismic action work together,the TMD damper and the isolated structure increase the vertical seismic action.