The　long-span　curved　surface　steel　structure　of　Beijing　Daxing　International　Airport　terminal　is　super　long　and　large,　and　the　form　of　the　supporting　C-shaped　column　is　novel,　the　structural　load　bearing　is　complex.　A　1/60　scale　model　was　designed　for　shaking　table　test　to　study　its　dynamic　characteristics　under　the　actions　of　8　degree　frequent,　seismic　precautionary　and　rare　earthquakes.　The　acceleration,　displacement　and　strain　under　the　conditions　of　one-way,　two-way　and　three-way　ground　motions　were　analyzed.　The　test　results　show　that　the　response　of　the　overall　model　is　the　largest　under　three-way　ground　motion,　and　the　structure　is　greatly　affected　by　the　vertical　seismic　action.　The　vertical　response　in　the　central　area　is　intense,　and　the　horizontal　seismic　response　in　other　areas　is　even,　which　shows　that　the　integrity　of　the　model　is　good.　The　supporting　structure　has　good　lateral　stiffness　and　its　strain　response　is　greatly　affected　by　the　horizontal　seismic　action.　The　inter-story　drift　angle　under　the　condition　of　8　degree　frequent　earthquake　is　1/639,　the　inter-story　drift　angle　under　the　condition　of　8　degree　rare　earthquake　is　1/54,　which　meets　the　requirement　of　seismic　code.　The　structure　does　not　collapse　under　the　condition　of　9　degree　rare　earthquake　and　does　not　show　apparent　failure.　It　is　proved　that　the　structure　prototype　has　reasonable　safety　reserve.　The　seismic　principle　that　＇the　structure　hasn＇t　damaged　under　frequent　earthquake,　repairable　under　precautionary　earthquake,　and　doesn＇t　collapse　under　rare　earthquake＇　is　reached,　thus　the　structural　design　is　reasonable.　The　design　of　C-shaped　column　is　reasonable,　and　it　has　good　supporting　action　and　lateral　stiffness.　©　2021,　Editorial　Office　of　Journal　of　Building　Structures.　All　right　reserved.