基于Benchmark模型的抑制屈曲支撑耗能减振作用分析  

Energy dissipation and vibration control performance of buckling-restrained braces in Benchmark building

作　　者：贾明明[1] 张素梅[1] 吕大刚[1] 蒋守兰[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《地震工程与工程振动》2009年第3期140-145,共6页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(90715021;50678057;50108005);国家十一五技术支撑项目子课题;黑龙江省自然科学基金重点项目(ZJG0701);中国博士后科学基金项目(20080440891)

摘　　要：抑制屈曲支撑可在拉压循环荷载作用下均达到屈服,拉压承载力基本一致,滞回曲线稳定饱满,耗能能力强。基于Benchmark模型对安装抑制屈曲支撑的钢框架结构基于ANSYS的数值分析表明,抑制屈曲支撑不仅可使结构在小震时的抗侧刚度有所提高,同时在大震时通过其往复滞回变形发挥耗能减振作用,大大地降低了结构的地震响应,提高了结构的抗震性能。同时分析表明考虑高阶振型影响的能力谱分析方法是一种更为精确的分析方法。BRBs are confirmed to have nearly the same yielding stress and ultimate strength under tension and compression. The .BRBs can undergo fully - reversed axial yield cycles without loss of stiffness and strength, whose seismic energy dissipation ability is superior. Based on the numerical analysis of Benchmark building in ANSYS, when the steel frame is installed with BRBs, the stiffness of the steel frame will be improved under frequent earthquake. Under rare earthquake, the energy dissipation is completed by the hysteretic deformation of BRBs, the seismic responses of the structures will be greatly reduced and the seismic performance will be improved. When the higher vibration modes are considered, the capacity spectrum analysis method will be improved.

关 键 词：抑制屈曲支撑 BENCHMARK模型 耗能减振 高阶振型 

分 类 号：P315.966[天文地球—地震学] TU352.1[天文地球—固体地球物理学]