（西安建筑科技大学结构工程与抗震教育部重点实验室，710055）

［提要］在已有的简化理论分析结果基础上，对带加强层高层建筑结构进行空间建模，研究了倒三角形和均布侧向荷载作用下结构的顶点位移、框架柱内力与加强层数量、加强层伸臂与内筒线刚度比、外柱与内筒的刚度比的关系。通过一系列数值计算，分析了带加强层高层建筑结构的受力性能，通过侧移及内力与加强层位置、结构构件的刚度比等关系，得出了合理的刚度比取值范围及限值。研究结果可供实际工程参考。

［关键词］高层建筑；水平加强层；伸臂；刚度比限值

Mechanical Performance and Design Suggestions of Outrigger Braced Tall Building Structures/Yang Kejia, Liang Xingwen, Li Bo(Key Lab of Structural Engineering and Vibration of China Education Ministry, Xi′an University of Architecture and Technology，Xi′an 710055,China)

Abstract:Based on theoretical analysis results of simplified planar structures,it studies the influence factors to roof displacement and internal force of a spatial structure subjected to uniform load and load with a inverted triangular distribution. The factors obtained from simplified theoretical analysis include location and number of outriggers and stiffness ratio of outriggers to core tube and side columns to core tube. Using numerical calculation, it analyzes the stress characteristic of this kind of structure and proposed a rational stiffness ratio range and limit of outriggers to core tube.

Keywords:tall building;  horizontal outrigger story;  outrigger;  stiffness ratio limit

*国家自然科学基金资助项目（50678146）。