Study on the Damping Effect of Displacement Amplification Viscous Damping Device
In order to solve the problem that the performance of the ordinary viscous damper is difficult to be fully utilized in the structure or position with small inter-story displacement,a viscous damping device based on the lever principle is proposed to amplify the displacement and velocity.The device amplifies the relative displacement at both ends of the ordinary viscous damper,and then amplifies the relative velocity,so that the damper performance can be fully utilized,and the effect of reducing the seismic response of the structure can be better achieved.Taking a practical engineering structure as the background,the finite element model is established by SAP2000 finite element software to analyze the seismic response of the original structure,the structure with additional ordinary viscous damper and the structure with additional large viscous damper under three seismic waves.The results show that under the action of three seismic waves,compared with the structure with ordinary cylindrical viscous dampers,the interlayer displacement angle and base shear force of the structure with additional enlarged viscous dampers are greatly reduced,indicating that the enlarged viscous dampers have better damping effect than the ordinary viscous dampers.
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