格栅式双钢板混凝土组合剪力墙的动力时程分析

Dynamic time history analysis of grille type double steel concrete shear wall

结合某30层框架-核心筒结构体系,建立钢筋混凝土核心筒、型钢混凝土核心筒和格栅式双钢板混凝土组合剪力墙核心筒三种结构体系对比方案,进行动力弹塑性时程分析计算对比。研究表明:在罕遇地震时,由于钢管混凝土框架-格栅式双钢板混凝土组合剪力墙核心筒结构体系抗侧刚度退化和强度退化缓慢,因此层间剪力和基底剪力有所增加,结构抗侧刚度增加显著,层间位移转角减小显著,提高了超高层建筑的抗震性能。

Combined with a 30 layer frame-core tube structure system,Three structural system including reinforced concrete core tube were established,steel reinforced concrete core tube and grille type double steel concrete composite shear wall core tube were established,dynamic elastic-plastic time history analysis and calculation comparison were carried out. Research shows that: under severe earthquake,because the lateral strength degradation and stiffness degradation of the concrete filled steel tubular frame-grille type double steel concrete composite shear wall core tube structure is slow,so the interlayer and the bottom shear force increase, structural lateral stiffness increases significantly, interlayer displacement angle reduces significantly,the seismic performance of tall building is improved.