To　investigate　the　influences　for　multi-cell　mega-bifurcated　concrete　filled　steel　tubular　columns　(CFST)　with　different　construction　measures　in　the　Chinese　Zun　project　in　Beijing,　tests　on　two　1:10　scaled　specimens　of　multi-cell　mega-bifurcated　CFST　were　conducted.　The　specimen　BAC　had　longitudinal　stiffeners　and　constructional　reinforcements,　which　were　not　provided　for　the　specimen　WAC.　The　failure　modes　and　static　properties　were　investigated.　The　test　results　demonstrate　that　the　specimen　BAC　conforms　to　the　mechanical　requirements　and　behave　advantages　over　the　specimen　WAC　in　terms　of　the　bearing　capacity,　stiffness　degeneration,　ductility　and　energy　dissipation　capacity.　The　analysis　results　reveal　that　the　late　deformation　of　multi-cell　mega-bifurcated　CFST　is　related　to　the　shape　of　cross　section.　In　case　of　requiring　no　diaphragms,　the　bearing　capacity　with　or　without　longitudinal　constructions　was　calculated　by　different　methods.　However,　the　calculated　results　indicate　that　the　contributions　of　diaphragms　to　the　bearing　capacity　are　remarkable　and　different　because　of　the　methods　of　calculation.　©　2016,　Editorial　Office　of　Journal　of　Building　Structures.　All　right　reserved.