Research on the roof steel structure design of Zhuhai Airport Terminal Ⅱ
The design standard and load action value of Zhuhai Airport Terminal Ⅱ,an important airport transportation hub project in Guangdong-Hong Kong-Macao Greater Bay Area was introduced.The structural selection idea of the upper roof steel structure to realize the " integrated idea of building decoration structure " was expounded.The static performance analysis,stability analysis and large earthquake elastic-plastic analysis of the main building were carried out.The fire resistance performance of the roof steel structure was studied,and the special construction simulation analysis was carried out according to the construction scheme of the roof steel structure.The results show that the wave-shaped variable-thickness partially evacuated welded spherical grid structure system selected for the steel structure of the main building roof realizes the unity of structural stress and building decoration,and has good stability performance.Under the action of rare earthquakes and fires,the force of the components meets the requirements,and the structure is safe and reliable.The construction scheme is feasible,and the structural deformation and internal force meet the design requirements during the lifting process.It is necessary to check the displacement and stress ratio of the large-span grid according to the actual load input calculation model after the construction simulation unloading jig.
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