［摘要］南亚之门工程位于云南省昆明市，塔楼建筑高度366m，为我国目前8度地区拟建的超高建筑之一。采用巨型框架-混凝土核心筒结构体系，层23以下建筑平面呈正方形，层23以上削角，建筑平面呈逐渐缩小的八边形，并在建筑顶部形成与底部旋转45°的内接正方形平面。置于平面四角的巨柱在层23一分为二形成8根倾斜角柱，并在设备层设置环带桁架，与巨柱形成抗侧刚度较大的巨型框架，与核心筒一起承担地震作用。环带桁架与核心筒通过加强层的楼板协调变形，起到“虚拟伸臂”的作用。采用速度型粘滞阻尼器增加结构阻尼，以减小地震作用。

［关键词］巨型框架; 框架-核心筒; 环带桁架; 虚拟伸臂; 粘滞阻尼器

中图分类号：TU318文献标识码：A文章编号：1002-848X(2012)05-0038-05

 

Bao Lianjin  （East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China）

 

Abstract: Gate of South Asia Tower located at Kunming with 366m high, is one of the highest structures in 8 degree-earthquake fortification zone. Mega frame-concrete core wall system is adopted in the structural design. The typical floor plan is square below the F23. Four mega columns are located at each corner. The floor plans are cut by an inclined plane at each corner above the F23 and form into gradually reduced octagons which finally form an inscribed square rotated by 45 degree from the bottom square. So the mega column in each corner bifurcates into two inclined mega columns from the F23. Mega frame consisted of the belt trusses located at the mechanical floors and the mega columns work in cooperation with the concrete core tube to resist the earthquake action. The belt trusses work as virtual outriggers through the slab in the mechanical floor. The viscous damper is adopted in the structure design to reduce the seismic effect.

Keywords:  mega frame; frame-corewall; belt truss; virtual outrigger; viscous damper

*上海市青年科技启明星计划（11QB1400500）。

作者简介：包联进，高级工程师，一级注册结构工程师，Email：blj0068@ecadi.com。

 

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