(中南建筑设计院股份有限公司， 武汉 430071)

［摘要］武汉天河国际机场T3航站楼总建筑面积49.5万m2，东西向长度约为1 200m，南北向宽度约为245m，建筑高度41.1m。介绍了T3航站楼的结构布置、设计思路、分析手段及构造措施。针对轨道交通隧道下穿航站楼带来的设计及施工难题，提出了相应的解决方案及处理措施。解决了本工程自由曲面空间网格屋盖设计中的关键问题，包括屋盖风荷载数据处理、模型参数化构建、网格优化、节点快速设计、复杂节点力学性能分析及试验等方面。为保证本工程巨型圆锥形变截面钢管（混凝土）斜柱的稳定性和安全，进行了设计方法研究，并提出了一种新的基于规范公式并考虑整体空间作用的分析方法。

［关键词］武汉天河国际机场； 隧道下穿； 空间网格； 模型参数化； 变截面钢管柱； 稳定性分析； BIM技术

中图分类号：TU398+.9, TU391文献标识码：A文章编号：1002-848X(2020)08-0009-06

Structure design on  terminal T3 of Wuhan Tianhe International Airport

YUAN Liming, HUANG Yinshen, LI Ting, WANG Xiaonan, XIE Qinlun, RUAN Xiangju, XU Guozhou

（Central-South Architectural Design Institute Co., Ltd., Wuhan 430071, China)

Abstract:The total area of  terminal  T3 of Wuhan Tianhe  International Airport is 495 000m2. It has a total length of approximately 1 200m from west to east, the max width between north and south is around 245m, and the building height is 41.1m. The structural system，design methods，analysis result and structure treatment measures were illustrated. Aiming at the design and construction problems caused by the rail tunnel undercrossing construction passing through the terminal building, corresponding solutions and treatment measures were proposed. It also solves the key problems in designing the free-form surface spatial grid roof of this project, including roof wind load data processing, model parameterization construction, node optimizing, complex node mechanical performance analysis and experiment, etc. Finally, in order to ensure the stability and safety of the giant conical variable-section steel-pipe inclined column in this project, the design method research was carried out and a new analysis method was proposed.

Keywords:Wuhan Tianhe International Airport; rail tunnel undercrossing construction； spatial grid structure； model parameterization construction； conical variable cross-section steel-pipe column；  stability analysis；  BIM technology