Roof design of China Southern Airlines No.1 Hangar in Beijing Daxing International Airport  

北京大兴国际机场南航1号机库屋盖设计

作　　者：ZHAO Bo-you SHEN Jin-long WEI Heng 赵伯友;沈金龙;韦恒(中国航空规划设计研究总院有限公司,北京100120)

机构地区：[1]China Aviation Planning and Design Institute(Group)Co.,Ltd.,Beijing 100120,China

出　　处：《空间结构》2024年第3期88-96,共9页Spatial Structures

摘　　要：To overcome the limitations of structural height imposed by airspace restrictions in the design of maintenance hangar roofs with long spans,a new diagonal truss roof structural system is introduced for the first time.In the design of China Southern Airlines No.1 Hangar,4 main trusses were arranged diagonally along the depth direction,forming a W-shape truss.3 lineshaped trusses were arranged along the span direction,and double-layer space latticed structure is laid on them.The design optimized the height of the 183 m+222 m super long-span roof to 11.5 m,the maximum dimension the site could provide,so that the building height is within the permitted 40m.The steel consumption of the roof is only 165 kg/m^(2).The installation of diagonal trusses changed the unidirectional load transmission path of the roof and enhanced the spatial load transmission,effectively relieving the burden on the gate-side truss.This design enables the implementation of a maintenance hangar with a 222 m-span and heavy roof within the constraints of low airspace height.为破解在限高场地超大跨度维修机库屋盖设计中结构受力所需合理高度受限的问题,首次提出了一种新型斜桁架屋盖结构体系.在222 m+183 m跨南航机库设计中,沿屋盖进深方向斜向布置4道主桁架,形成“W”形桁架;沿屋盖跨度方向结合悬挂设备的连接需求,布置3道“一”字型桁架.在40 m空域限高场地,仅用11.5 m的结构高度成功跨越了超大跨度,屋盖用钢量仅165 kg/m^(2),实施效果良好.斜桁架的设置,改变了屋盖单向受力特征,增强了屋盖空间受力特性,有效缓解了大门边桁架的负担,使得空域限高场地222 m超大跨度、重屋盖维修机库的实施成为可能.

关 键 词：HANGAR diagonal truss line-shaped truss gate-side truss airspace height limit site 

分 类 号：TU393.3[建筑科学—结构工程]