Vertical Vibration Control Of Steel Mega-Frame With Suspended Floors

At present, a great deal of disaster beyond question shows that the effects of vertical earthquake to structure are universal, especially to long-span structure. Steel mega-frame with suspended floors is one of newfashioned long-span structures whose vertical reaction to vertical earthquake is relatively large, there is no specific entry in domestic seismic design code about whether or not to take into account vertical earthquake and how to think over vertical earthquake. At the same time, recently the control technology mostly focuses on reducing the reaction to horizontal earthquake, the control research on vertical earthquake is less, so it is important in the theory and practice domain to control the vertical vibration of mega steel frame with suspended floors arosed by vertical earthquake.Whereas noted vertical ground motions is lack, based on the theory of the phase-difference spectrum on the non-station of ground motions and response-spectrum-compatibility, vertical ground motions are generated, which many factors including site, intensity, epicentral distance and the non-station of ground motions are taken into account. The method refered to synthesize vertical ground motions is less computer work, accuracy and efficiency.In the midst of vertical control of stucture, active variable damping control controller is analyzed and designed by the control theory of the LQR (classical linear quadratic optimal control), which is fixed between main structure and main structure, between main structure and hypo-structure, between hypo-...