台风动力作用下大跨度航站楼屋盖连续风揭形态及机理研究  

Study on the form and mechanism of continuous wind uplift of large-span terminal roof under typhoon

作　　者：刘凌峰 柯世堂[1,2] 任贺贺 吴鸿鑫 李文杰[1,2] 田文鑫 LIU Lingfeng;KE Shitang;REN Hehe;WU Hongxin;LI Wenjie;TIAN Wenxin(Department of Civil and Airport Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Jiangsu Airport Infrastructure Safety Engineering Research Center,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学土木与机场工程系,江苏南京210016 [2]南京航空航天大学江苏省机场基础设施安全工程研究中心,江苏南京210016

出　　处：《振动工程学报》2025年第3期539-549,共11页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(52078251);江苏省自然科学基金资助项目(BK20211518,BK20210309);中央高校基本科研业务费专项资金资助项目(NS2021050,NE2020007)。

摘　　要：大跨度航站楼屋盖的风揭作用是影响其结构安全的重要因素之一,现有研究仅考虑了良态风气候和静力风荷载作用,难以解释强台风动力荷载作用下屋盖结构的真实风揭形态与发生机制。鉴于此,本文基于WRF、CFD和LS/DYNA开展了台风作用下大跨度航站楼连续风揭破坏全过程数值模拟。开展台风“黑格比”风场模拟,并以某国际机场航站楼为例,模拟台风作用下航站楼屋面连续风揭全过程,对比分析不同风向角下屋盖的风揭破坏形态及风损率,揭示了台风作用下大跨度航站楼风揭破坏机理。结果表明,航站楼屋盖迎风边缘极值风压较大,上吸下压作用明显,最大风压系数差值为12.41;达到临界风速时,屋盖迎风边缘局部被风揭起,随着风速增大,引发“连锁效应”,导致屋面连续风揭破坏,屋面撕裂方向与来流方向一致;基于屋面单元失效前后内能变化规律给出能量失效指标K,可用于指导大跨度航站楼屋盖抗风揭设计。The wind uncovering effect of the roof of a large-span terminal building is one of the important factors affecting its structural safety.Existing studies only consider the benign wind climate and static wind load effects,which are difficult to explain the real wind uncovering pattern and occurrence mechanism of the roof structure under the strong typhoon dynamic load.Based on WRF,CFD and LS/DYNA,this paper carries out the numerical simulation of continuous wind damage of a large-span terminal building under the action of typhoon.The wind field simulation of typhoon"Hegeby"was carried out firstly.The continuous wind uncovering process of the terminal roof under the typhoon was simulated by taking an international airport terminal building as an example,and the wind damage pattern and wind damage rate of the roof cover under different wind angles were compared and analyzed to reveal the wind damage mechanism of the large-span terminal building under the typhoon.The results show that the extreme wind pressure at the windward edge of the terminal roof is higher,and the effect of upward and downward pressure is obvious,and the maximum pressure difference coefficient is 12.41.When the critical wind speed is reached,the windward edge of the roof is partially lifted by the wind,and then the"chain effect"triggers the continuous wind damage of the roof,and the tearing direction of the roof is consistent with the incoming flow direction.The energy failure index K is given based on the law of internal energy change before and after the failure of roof units,which can be used to guide the design of large-span terminal building roofs against wind uncovering.

关 键 词：大跨度航站楼 连续风揭形态 台风 破坏机理 

分 类 号：TU312.1[建筑科学—结构工程] TU352.2