| Structural lateral displacement becomes the main control index during the high-rise building structure designs.When the frame-corewall structure is not so rigid,the refuge story and facility story should be used form the reasonable horizontal outriggers,so as to the high-rise binding having strengthened stories.It is an effective way to decrease structural lateral displacement against the influence of wind by setting the horizontal strengthened stories.When come to the influence of earthquake,this designs will cause the sudden variation of structural stiffness and internal force,and will come into being weal story,which will make it difficult for the yield mechanism of the structure to car-ry out "strong column and weak" and"strong shear weak bending" extending bendi-ng system.In view of horizontal strengthened story of high-rise building structures has many adverse in earthquake,in this paper we use buckling-restrained braces in super high-ri-se steel frame structure,ordinary brace in horizontal strengthened story with energy di-ssipation (buckling-restrained brace) replaced to formation of seismic energy dissipat-ion story.Under earthquake energy dissipation structure with buckling-restrained brac-es reduce the dynamic response,in order to better protect the main structure.Based on this super high-rise building, for example, using ANSYS software to buil-d their three-dimensional model.analysis strengthend story and energy dissipation wit-h buckling-restrained brace of structural stiffness,internal force and displacement time history,by comparing with strengthened story structure, we can see that buckling-restr-ained brace more effective control than strengthened story structure in seismic respon-se,buckling-restrained brace played a good energy characteristics of its own,so that the ma-in energy dissipation through buckling-restrained brace. The main structure of bui-lding to withstand only a small part of the seismic energy,which is beneficial to buildi-ng. |
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