Research on Aseismicity of Viscous Damper for Adding Steel Storys on the Top of Frame Structure

In this paper are set energy dissipation devices(viscous dampers) on the center support of adding steel storys structures to adjust the overall damping ratio and earthquake energy consumption of the overall structure.The analysis shows that the energy dissipation system mainly reduces large lateral displacement between layers and lower layer shear and column axial force,controls the location and time of layer displacement angle,thus to effectively control the vibration response of adding steel storys structure,and make the overall structure meet seismic code requirements.