DESIGN AND RESEARCH ON SEISMIC REDUCTION SCHEMES FOR A STEEL STRUCTURE OF A BUILDING
The steel structure system of a super high-rise building is a double-layer resistance combination of a steel frame combined with a steel support tube,and at the same time,buckling constraint braces and steel connecting beams are set as energy dissipation and seismic absorption components.In order to obtain the most effective seismic design scheme,a comparative analysis was conducted on the damage situation,inter story displacement angle,and other indicators of 7 different support settings under rare earthquakes.The results showed that in terms of improving the inter story displacement angle,Scheme C1 reduced the maximum inter story displacement angle by 12.4％compared to the ordinary Scheme A1,and the decrease in inter story displacement angle only slightly increased when buckling constrained supports(Scheme D1～G1)were added upwards;The trend of vertex displacement changes is shown as follows:with the addition of buckling constraint support layer by layer,its value first decreases and then gradually increases.Overall,Scheme D1 has the smallest vertex displacement,which is reduced by nearly 17％compared to Scheme A1;The energy consumption ratio of buckling constrained support and steel connecting beam shows a gradual increase with the addition of buckling constrained support layer by layer,and the energy consumption ratio of Scheme D1 is close to Scheme G.After comparing the various indicators of each layout scheme,the optimal Scheme C1 is determined as the optimal scheme.
super high-rise steel structuresteel framebuckling restrained supportvertex displacementenergy consumption ratio
万方数据
维普
