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(中南建筑設(shè)計院股份有限公司， 武漢 430071)

［摘要］武漢天河國際機(jī)場T3航站樓總建筑面積49.5萬m2，東西向長度約為1 200m，南北向?qū)挾燃s為245m，建筑高度41.1m。介紹了T3航站樓的結(jié)構(gòu)布置、設(shè)計思路、分析手段及構(gòu)造措施。針對軌道交通隧道下穿航站樓帶來的設(shè)計及施工難題，提出了相應(yīng)的解決方案及處理措施。解決了本工程自由曲面空間網(wǎng)格屋蓋設(shè)計中的關(guān)鍵問題，包括屋蓋風(fēng)荷載數(shù)據(jù)處理、模型參數(shù)化構(gòu)建、網(wǎng)格優(yōu)化、節(jié)點(diǎn)快速設(shè)計、復(fù)雜節(jié)點(diǎn)力學(xué)性能分析及試驗(yàn)等方面。為保證本工程巨型圓錐形變截面鋼管（混凝土）斜柱的穩(wěn)定性和安全，進(jìn)行了設(shè)計方法研究，并提出了一種新的基于規(guī)范公式并考慮整體空間作用的分析方法。

［關(guān)鍵詞］武漢天河國際機(jī)場； 隧道下穿； 空間網(wǎng)格； 模型參數(shù)化； 變截面鋼管柱； 穩(wěn)定性分析； BIM技術(shù)

中圖分類號：TU398+.9, TU391文獻(xiàn)標(biāo)識碼：A文章編號：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