Study On The Difference Of Vertical Displacement And Working Performance Of Frame-Tube Structure With Strengthened Stories

At present,high-rise building structure has been widely developed and used in the world.For controlling the lateral displacement in the design of frame-core tube structure,we often add some outriggers between tube and framework columns.While the vierendeel truss reinforcement layer is less used and the research about this form of horizontal outriggers is relatively little in the high-rise building.Moreover,the influence that the arrangement of reinforcement layers have on the vertical displacement difference of the wall and the frame has not been systematically studied.Based on the previous research results,this paper uses the software ETABS to further explore the influence that the reinforcement layer brings to the vertical displacement difference in high-rise building structure.In this paper,a number of finite element analysis models are established to focus on the influence of the outriggers and the belt have on the vertical displacement difference in the frame-core tube structure.At the same time,the finite element analysis models of vierendeel truss with different internode arrangement are established by ETABS,and the elastic time history analysis of these models is carried out,in order to obtain reasonable internode arrangement.So that it can be applied to engineering practice.Through the re-modeling and analysis of the actual engineering variable parameters,the following conclusions are obtained: the setting of the outriggers reinforcement layer has a significant effect on reducing the vertical displacement difference of the frame column and the core tube,and the more outriggers,the less vertical displacement difference.But the effect will bring the additional internal force of the outriggers.The setting of the ring belt has little effect on the vertical displacement difference of the frame-core tube structure,and the internal force of the outriggers is not obvious.And the frame-core tube structure of the vierendeel truss with different internode arrangement isanalyzed by modeling.The results show the bigger space in the middle and equal space at the both sides of the truss is the better form.