Fire　is　one　of　the　main　threats　to　the　safety　of　high-rise　structures.　The　mechanical　response　of　a　building　under　fire　is　the　behavior　of　the　overall　structure　of　which　the　main　feature　is　that　the　structural　stiffness　and　bearing　capacity　of　heated　sub-structures　vary　with　the　fire　development　and　in　turn　lead　to　the　redistribution　of　the　internal　forces　within　the　structural　system.　Currently,　the　relevant　researches　about　the　fire　resistance　of　structural　members　of　high-rise　structures　have　been　performed,　but　the　study　of　the　overall　fire　resistance　performance　of　high-rise　concrete　structures　is　rare.　In　this　paper,　the　fiber　beam　model　and　the　multi-layer　shell　model　that　allow　for　the　effect　of　high　temperature　are　used　to　analyze　the　overall　fire　resistance　performance　of　a　high-rise　concrete　structure.　Through　simulating　the　different　parts　of　the　overall　structure　under　the　standard　fire　scenario,　a　comparative　analysis　of　the　fire　resistance　of　super　tall　structures　is　taken.　Finally,　Pushdown　method　is　used　to　analyze　the　collapse-resistant　capacity　under　fire.　©,　2015,　Tsinghua　University.　All　right　reserved.