【摘要】 采用ABAQUS通用有限元软件分析钢-混凝土混合结构在地震作用下的动力特性及动力时程反应,得到了结构在不同地震烈度下的顶点位移时程、加速度时程、楼层位移及层间位移角反应;并研究了地震作用下混合结构的开裂、屈服与破坏情况。研究结果表明:混合结构的楼层侧移呈弯剪综合的变形特性;结构的最大层间位移角发生在结构的中下部楼层,且随地震烈度加大,最大层间位移角出现的楼层位置呈下移趋势;混凝土核心筒的连梁先于底层剪力墙发生破坏而成为结构的薄弱环节。更多还原

【Abstract】 The finite element program ABAQUS was applied to study the dynamic characteristics and time-reaction of hybrid structure under the earthquake function,the displacement time-history response of top floor,acceleration time-history,floor displacement and inner-story drifts ratio of the structure were obtained,and the character of its crack development,yielding and failure situation were also discussed in detail.The results show that floor sideway of the hybrid structure shows shear-flexural deformation characteristic;Maximal story angular drift of the structure occurs in the upper floors,with the earthquake intensified,whose position drops;Coupling beam of concretes corewall is often destroyed before the first floor shear wall and becomes the weak link.更多还原