消能减震技术在高层框支剪力墙结构中的应用研究

高层框支剪力墙结构在高层结构得到广泛应用,但由于该结构属于竖向抗侧力构件不连续的结构体系,容易出现结构薄弱层及抗震性能不足等问题。因此,为了更好地研究高层框支剪力墙的抗震性能与实际应用,本文将消能减震技术应用到高层框支剪力墙结构中,结合工程实例运用有限元分析软件ETABS建立了一幢23层粘滞阻尼器(VFD)和屈曲约束支撑(BRB)消能减震结构计算模型,对两种模型进行多遇地震作用下的时程分析,并选择模型主要控制参数:楼层位移、楼层剪力、能量耗散等进行对比分析,研究结果表明:布置BRB时,楼层位移变形控制效果较好;布置VFD时,对结构的基底剪力控制效果较好;BRB的整体地震耗能能力大于VFD。

Study on application of energy dissipation technology in high-rise frame-supported shear wall structure

Nowadays,high-rise frame-supported shear wall structure has been widely applied in high-rise buildings.But because the structure is one of those structure systems with discontinuous vertical lateral load-resisting members,problems such as structural weak layer and poor seismic performance are easy to appear.Therefore,in order to better study the seismic performance and practical application of high-rise frame-supported shear wall,this paper applies energy dissipation technology to high-rise frame-supported shear wall structure.In this paper,the calculation models of 23-story viscous dampers(VFD)and buckling-restrained braces(BRB)are established by using finite element analysis software,ETABS.Time history analysis has also been done under the action of frequent earthquakes.The main control parameters of the model,such as floor displacement,floor shear force and energy dissipation,are selected and analyzed.The results show that the control effect of floor displacement and deformation is better when BRB is arranged,and when VFD is arranged,the results show that the overall energy dissipation capacity of BRB is higher than that of VFD.