Exact Analytic Methods Of Decouping In Real Spaces And Earthquake Action Calculation For High-rise Isola-Tion Structure With TMD

Analysis of structure response under seismic action，By isolation and passive controlmethod of TMD to control the vibration of the structure under seismic action.To better reduce the upper structure under the seismic action of displacement betweenthe layers.Then on the basis of base isolation, At the top of the structure equipped with tuned mass damper (TMD) in order to achieve better dampi ng effect.For base isolation of the multi-storey building structure system，With two degreesof freedom model of the structure，using the dynamic balance Listed equation of motion,Deal with equation of motion by the vibration mode decomposition method，Use displacement modes and generalized coordinates。Recombination expression for displacement response，Combination modes and generalized coordinates, then get the displacement response expression。Get isolation layer and the upper structure of the displacement between thelayers，Combining with numerical method of time history response analysis。To the problem of non classical damping analysis，By forcing decoupling method, iterative method andthe approximate real space such as approximation method，And comparing with precise complex modal method。Compare various kinds of precision of the approximate method, find the precision meets the relative requirements and easy way.At the same time with two degree of freedom structure decoupling in real spaces，Quality of asymmetric structure, non classical damping equations of motion for precisedecoupling，the structural displacement and velocity response are exactly decomposed oflinear combination of displacement and velocity response of serial standard oscillators,Combination of acceleration response spectrum of earthquake action value.For the high-rise building structure system，Used on the top floor with TMD and thecombination of base isolation control measures for vibration control。Multi degree offreedom structure model were analyzed，Respectively with the first vibration mode andwith multiple modes，With real space decoupling and the complex mode method forresponse analysis and seismic action values。Combined with the results and not isolatedstructures with TMD is analyzed.