| In high-rise buildings,the lateral force components of structures are the main factors that affect and restrict the high-rise buildings.Buckling restrained brace as a good lateral force resisting component has gradually entered our line of vision.The anti-buckling support can be roughly divided into two parts,one is the inner core,the other is the outsourced steel pipe(some are also concrete).There are some gaps between the inner core and the steel tube confinement,BRBs under repeated axial tensile stress,the inner core of steel buckling,because there are constraints of the steel tube of the steel pipe constraint will restrict the inner core of steel core steel will continue to yield,so in the single wave damage gradually evolved into a multi damage thus,absorb seismic energy.In this paper,the instability process of buckling restrained braces is mainly analyzed.The local stability and overall stability of BRB of BRB stress performance,then using the ANSYS model analysis,through the comparison of BRB and common support,different factors research on buckling restrained performance.Finally,taking the project example as the research object,the following conclusions are obtainedFirst,the BRB and energy dissipation braces should be arranged in the weak layer of the structure.Second,in order to prevent the torsional damage of the structure,the X axis or the Y axis have just passed small or too large,and the support should be separately arranged according to the characteristics of the structure.Third,the location of the buckled energy dissipation braces should be located far away from the center of the mass and the center of the stiffness. |
