【摘要】 为研究高层组合框架-混凝土筒体混合结构的静力特性,以30层高组合框架-混凝土筒体混合结构为分析对象,建立整体空间有限元分析模型,研究外框架与筒体之间连接方式、楼板厚度对结构变形与内力的影响,发现外框架中存在一定剪力滞后现象;外框架与筒体之间铰接时,框架承担的层间剪力将增加,而由框架柱轴力形成的抗倾覆弯矩减小;楼板厚度的增加使结构内力沿结构高度具有不同变化规律等结论,可为高层混合结构设计提供参考。更多还原

【Abstract】 For the dynamic characteristics of Core-RC and composite frame hybrid structures, a 30-storey Core-RC and composite frame hybrid structures is studied by establishing space finite element analysis model, the influence of floor thicknesses and connection between the exterior frame and concrete core on static characteristic of hybrid structure are analyzed. The exterior frame has shear lag, the hinge connection between the exterior frame and concrete core causes that story shear of frame increases, the overturning moment resistance aroused by the axial of frame column are simultaneity decreased. The floor thicknesses have different impact on inner force along height of hybrid structure. The results can be used for the anti-seism design of hybrid structures.更多还原