(1 深圳大学建筑设计研究院，深圳 518060；2 中建国际设计顾问有限公司，深圳 518033)

［摘要］重力荷载作用下网筒结构外鼓及交叉柱间轴力差异将使环梁受到较大的拉力。为保证环梁具有适宜的刚度，控制环梁裂缝宽度，工程中部分环梁采用了部分预应力，并对预应力张拉施工全过程进行了施工模拟。环梁设计采用了预应力等效荷载和重力、风、温度、地震多种荷载组合下的最不利内力。预应力效应全过程整体分析为环梁及整体结构设计安全可靠提供了保证。

［关键词］超高层建筑；外网筒；交叉柱；环梁；部分预应力；等效荷载

Partially prestressed concrete ring beams design of a super high-rise building in Qatar

Meng Meili¹, Fu Xueyi^1，2, Wu Bing¹(1 Shenzhen University Institute of Architectural Design and Research, Shenzhen 518060, China; 2 China Construction (Shenzhen) Design International, Shenzhen 518033, China)

Abstract:The exterior tube structure exerts radial outward forces, and the diagrid columns have significant difference in axial force. Both result in large axial tension forces in ring beams. To guarantee the ring beams stiffness and control the crack width, partially prestressed technique in some ring beams is used. And the whole prestressed construction process is considered in the FEM. The maximum forces due to combinations which include the prestressed equivalent load, gravity load, temperature action, earthquake action etc are applied to ring beams design. The analysis with full consideration of the whole construction process makes sure of the safety of the ring beams, so as the whole structure.

Keywords:super high-rise building; exterior tube structure; diagrid columns; ring beam; partially prestressed; equivalent load

作者简介：孟美莉，高级工程师，Email:0755mml@163.com。

参考文献

［1］BRITISH STANDARD BS8110:part1-2［S］. 1997.

［2］傅学怡，吴兵，陈贤川,等. 卡塔尔某超高层建筑结构设计研究综述［J］. 建筑结构学报，2008，29(1).

［3］EUROCODE 1—4［S］. 2001.