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（北京市建筑設計研究院有限公司， 北京 100045）
［摘要］桂林兩江國際機場T2航站樓主體采用鋼筋混凝土框架結構，中心區(qū)屋蓋采用空間實腹拱支撐+單層殼體鋼結構體系，支撐拱最大跨度120m。通過試算一系列曲線方程模擬建筑屋蓋面，較好地實現(xiàn)了建筑與結構的統(tǒng)一。根據(jù)屋蓋受力特點，確定采用空間曲線拱支撐體系，獲得了很好的建筑空間。為確保抵抗拱推力，在群樁抗剪承載力滿足拱座推力的情況下，采用預應力拉桿仍能平衡拱推力。經過詳細的受力分析及穩(wěn)定性分析，結構承載力滿足要求，同時對結構薄弱部位予以構造加強?？紤]行波效應對結構超長引起的扭轉影響問題，通過分析提出了相應的結構構件抗扭加強措施。
［關鍵詞］桂林兩江國際機場； 拱殼結構； 大跨度
中圖分類號：TU393-3, TU318文獻標識碼：A文章編號：1002-848X(2016)17-0008-06
Steel roof design of Guilin Liangjiang International Airport Terminal T2
Chen Lin， Pang Yanfeng， Li Rudi， Shu Weinong， Wang Guoqing， Chen Qing， Zhao Yin
(Beijing Institute of Architecture Design, Beijing 100045， China)
Abstract:The main building of Guilin Liangjiang International Airport Terminal T2 adopts the steel reinforced concrete frame structure, and the central roof uses the spatial solid web arch support and single-shell steel structural system with the largest supporting arch span of 120m. Through the calculations of a series of building roof surface simulated by curve equations, the unity of architecture and structure was realized better. According to the mechanical characteristics of the roof, the spatial curve arch supporting system was determined to obtain good architectural space. In order to ensure the resistance to the arch thrust, pre-stressed tensile bars could still balance arch thrust although shear bearing capacity of pile group satisfy the arch thrust requirement. The results of detailed mechanical analysis and stability analysis show that the structure bearing capacity could meet the requirements. The structural weak positions were reinforced with structural details. Considering the torsional problem caused by traveling wave effect on super-long structure, the torsional strengthening measures on corresponding structural components were put forward.
Keywords:Guilin Liangjiang International Airport; arch shell structure; large span
作者簡介：陳林，高級工程師，Email：snakechenlin1013@sina.com。
