【摘要】 防屈曲支撑(BRB)作为一种金属屈服耗能支撑构件,克服了普通支撑受压屈曲的缺点,在地震中具有良好的耗能能力和延性。为了研究防屈曲支撑在常规岛主厂房中的耗能减震效果,本文采用非线性有限元分析软件ABAQUS对设置防屈曲支撑的某常规岛主厂房结构进行了罕遇地震作用下的有限元分析,对比了不同地震波作用下的结构弹塑性分析结果。结果表明:设置防屈曲支撑以后,结构的抗震性能显著提高,本研究为防屈曲支撑在常规岛主厂房结构中的应用提供了成功的工程案例,其设计思路可以为常规岛主厂房结构的减震提供有益的借鉴和参考。更多还原

【Abstract】 As a kind of energy dissipation brace members by the yielding of mental,Buckling Restrained Brace( BRB) can overcome shortcomings of the common braces’ compression buckling,which has good energy dissipation capacity and ductility under earthquake.To study the BRB effect in the main machine hall,the nonlinear finite element analysis software ABAQUS is adopted to analyze the seismic performance of a main machine hall in conventional island with Buckling Restrained Braces under rare earthquake,and the elastic-plastic analysis results under the action of different seismic wave are compared. The results show the structural seismic performance has been improved significantly,a successful engineering case is provided for the application of BRB in the damping design of main machine hall structures.更多还原