某机场航站楼钢屋盖抗火设计  

Fire Resistance Design of Steel Roof for Terminal Building of an International Airport

作　　者：胡众[1,2] 周健 丁霖[3] HU Zhong;ZHOU Jian;DING Lin(Hefei Urban and Rural Construction Bureau,Hefei Construction Quality and Safety Supervision Station,Hefei 230001,China;Anhui Civil Aviation Airport Group Co.,Ltd.,Hefei Xinqiao International Airport Reconstruction and Expansion Project Construction Headquarters,Hefei 230086,China;East China Architectural Design&Research Institute Co.,Ltd.,Shanghai 200002,China)

机构地区：[1]合肥市城乡建设局合肥市建筑质量安全监督站,合肥230001 [2]安徽民航机场集团有限公司合肥新桥国际机场改扩建工程建设指挥部,合肥230086 [3]华东建筑设计研究院有限公司,上海200002

出　　处：《建筑钢结构进展》2025年第3期46-54,75,共10页Progress in Steel Building Structures

基　　金：云南省科技厅重点研发计划(202303AA080012)。

摘　　要：为使大跨钢屋盖结构抗火设计同时满足安全可靠、功能适用和经济合理的要求,对合肥新桥机场T2航站楼钢屋盖进行了基于仿真模拟的抗火设计。首先对典型的钢管混凝土柱、钢柱进行了基于构件的抗火性能仿真模拟,分析和比较了无防火保护和在不同等效热阻防火涂料保护下的温度场分布和构件耐火极限;对屋盖桁架和钢梁进行了基于整体结构的抗火性能仿真模拟,得到了考虑热膨胀效应下的屋盖构件耐火极限。最后基于分析结果,提出了抗火设计方案如下:支承钢屋盖的钢管混凝土柱和钢柱采用膨胀型防火涂料保护以实现3 h耐火极限;离楼面9 m以上钢屋盖构件不采用防火保护措施。In order to ensure that the fire resistance design of large-span steel roof structures meets the requirements of safety,reliability,functional applicability,and economic rationality,a special fire resistance design based on simulation was carried out for the steel roof of T2 terminal building of Hefei Xinqiao Airport.Firstly,component based fire resistance simulations were conducted on typical concrete-filled steel tubular columns and steel columns,analyzing and comparing the temperature field distribution and fire resistance of components without fire protection and under different equivalent thermal resistance fireproof coating protection.The fire resistance performance of roof trusses and steel beams was simulated based on the overall structure,and the fire resistance of roof components considering thermal expansion effect was obtained.Finally,based on the analysis results,a fire-resistant design scheme was proposed for the concrete-filled steel tubular columns and steel columns supporting the steel roof,which were protected by an intumescent fireproof coating to achieve a 3-hour fire resistance,and the steel roof components more than 9 meters away from the floor were not protected by fire protection.

关 键 词：航站楼 钢结构 抗火设计 耐火极限 抗火仿真模拟 膨胀型防火涂料 

分 类 号：TU317[建筑科学—结构工程]