Limit-beyond And Anti-seismic Performance Analysis Of A Super High-rise Building

This paper is devoted to the study of a certain super-tall limit-beyond and seismic behavior design,provides a reference for future similar structure performance,which masters the following research:1.Use SATWE and PMSAP to precisely compare and analyze the whole structure calculation results and the internal forces of components,and to ensure the rationality of the whole structural calculation,as well as check whether the structure is overrun.2.The elastic analysis was used to supplement the acceleration response spectrum analysis method,according to the seismic acceleration response spectrum and time history analysis envelope values for design analysis.3.Some shear walls not falling to the ground are applied with transformation frame,and the walls limb connected to transfer beams are calculated as frame-supporting columns.Check whether the overall calculated control parameters are consistent,carries on the envelope design.4.The floors of discontinuity,key parts and convert floor are carried on with typical floor stress analysis under the earthquake,which ensures to meet the seismic performance goal.5.Adopt PUSH&EPDA general finite element software to perform static elastoplastic analysis of structures,calculate the dynamic response of structure under severe earthquake,including the deformation of the structure under the action of strong earthquake,the plasticity and damages of components,as well as the elastoplastic behavior of the structure.The indexes include the maximum vertex displacement,maximum layers displacement and the maximum base shear,etc.Components at structural weak floors,deformation and failure of weak components are under analysis,such as the strengthened parts of the structure and its upper and lower layers,etc.The anti-seismic performance of structure under strong earthquakes and rarely met earthquake is under argument,determining the weak positions in the structure.Through each loading step,study the damages of beams,coupling beams and some walls,and then strengthen the walls according these damages.Finally,strengthening measure is applied to the limit-beyond design of the building.