Study On Structural Seismic Performance And Damage Impact Of Tall Frame-core Tube Structure Under Seismic Action

With the accelerated process of urbanization,the long vibration period of super high-rise was more and more in recent years.however,the long-period super-tall building often suffered destruction and collapse in the process of earthquake,which made the engineering and researchers focus on this kind of structure.In this paper,the characteristic analysis of earthquake response to super high-rise steel reinforced concrete frame-core tube structure under different types of ground motion were carried out,including the following aspects mainly:(1) The detailed instructions about the establishment of the finite element analysis model were described from the nonlinear finite element software、material constitutive and structural components analysis model,and dynamic characteristics analysis of checking analysis model was correct and feasible were carried out.(2) Elasto-plastic time-history on the super high-rise steel reinforced concrete frame-core tube structure were carried out with the use of Perform-3D,investigating the influence rule for structure under long-period seismic waves and ordinary earthquake waves,near-field pulse seismic waves and far-field nonpulse earthquake waves.(3) The comparative analysis of structural damage and deformation and the verification of the impact on the situation of long-period seismic waves for structure were carried out,which based on the seiemic response analysis under the role of the long-period and ordinary earthquake waves.In the end, the preliminary analysis and research about energy distribution of structure was also carried out under the effect of long-period seismic waves.(4) The comparative analysis of seismic response characteristics on structure under the single main shock seismic wave and the main-aftershock sequence were carried out,analysised the impact rule on structure under the main-aftershock sequence seismic based on the point of the response of the vertex acceleration,top displacement,base shear,base moment and structural component damage and deformation performance.