巨框格栅式双钢板剪力墙体系抗震性能

SEISMIC PERFORMANCE OF GIANT FRAME GRID-TYPE DOUBLE STEEL PLATE SHEAR WALL SYSTEM

为满足km级超高层在高地震设防烈度下的抗震性能要求,提出一种以格栅式双钢板–混凝土组合剪力墙为主要抗侧力构件的km级巨框格栅式双钢板剪力墙体系,围绕该体系的弹塑性抗震性能展开了研究,建立km级巨框格栅式双钢板剪力墙体系弹塑性动力时程分析模型,使用SAUSAGE计算该模型在罕遇地震作用下的地震响应,分析结构变形分布、结构整体屈服机制、层间剪力分布规律及构件损伤分布模式等。结果表明,该结构体系最大层间位移角为1/109,连梁先于其余构件屈服,层间剪力主要由剪力墙承担,巨框格栅式双钢板剪力墙体系能够满足km级超高层建筑抗震设计要求。

In order to meet the seismic performance requirements of kilometer-scale super high-rise buildings under high seismic fortification intensity,a kilometer-scale giant frame grid with a grid-type double steel plateconcrete composite shear wall as the main lateral force member is proposed.The elastic-plastic seismic performance of the system is studied,and the elastic-plastic dynamic time history analysis model of kilometer-scale giant frame grid double steel plate shear wall system is established.The seismic response of the model under the action of rare earthquakes is calculated using SAUSAGE,and the structural deformation distribution,the structure’s overall yield mechanism,the interlayer shear distribution law and the component damage distribution mode are analyzed.The results show that the maximum interstorey displacement angle of the structural system is 1/109,the connecting beam yields before the rest of the members,the interstorey shear force is mainly shared by the shear wall,and the giant frame grid type double steel plate shear wall system can meet the requirements of kilometer-scale seismic design requirements for super high-rise buildings.