(北京市建筑设计研究院，北京 100045)
［摘要］昆明新机场为大型枢纽机场，国家重点工程。航站楼南北长约855m，东西宽约1 132m，下部结构采用钢筋混凝土框架结构，支撑屋顶的结构采用“彩带”形钢结构，航站楼一期总建筑面积约54.83万m2。建设场地位于世界上活动级别最高的小江断裂带附近，属高地震烈度区，跨越多个地貌单元，地形起伏，岩溶非常发育，多条断层从场区穿过，场地填筑厚度差异大，地基极不均匀。航站楼的结构复杂，针对特殊的地震和地质条件，在航站楼的前中心区(324m×256m)采用了隔震技术。航站楼工程属于超长型结构、屋架支承结构采用形式独特的钢彩带结构，围护结构采用了不规则索幕墙结构等，针对以上关键问题，设计中采取了有效的结构措施，解决了工程中的各种困难。
［关键词］航站楼；钢彩带结构；超长型结构；基础隔震；索幕墙结构；多点多维地震输入
Introduction of structural design of the Kunming new airport terminal building
Shu Weinong, Zhu Zhongyi, Ke Changhua, Wang Chunhua, Qi Yue, Huang Jia, Qin Kai, Wang Yi(Beijing Institute of Architecture Design and Research, Beijing 100045, China)
Abstract:Kunming new airport is a national key project and will be one of the largest terminals in China. The basic structural system of the terminal building is a reinforced concrete frame with top steel ribbon,850m long in north-south,1 120m wide in east-west. The gross floor area of phase Ⅰ is about 548 300m2. The distance from the airport site to the Xiaojiang fault in southwest China, one of the most active faults worldwide,is about 12km and the site is located in high seismic intensity region. The site spans multiple landform units with terrain fluctuation and karst development. With several faults across the site, the backfill thickness of foundation varies significantly and the base is distributed unevenly. Seismic isolation techniques are applied at the front center area(324m×256m) of the terminal due to structural complexity and unique seismic and geological conditions. Design measures had been applied to solve the problems encountered during the project,which were caused by the super length of the structure, steel ribbon supporting structures and the irregularity of the cable structure of the curtain wall.
Keywords:airport terminal buildings; steel ribbon supporting structure; super-long structures; seismic isolation of foundation; cable structures; curtain wall; multiple-support and multipledimensional excitation
作者简介：束伟农，副总工程师。
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