For　the　four　types　of　joints　formed　by　blind　bolt　connection　between　H-shaped　pure　steel　beam,　steel-concrete　composite　beam　and　rectangular　steel　tube　column,　rectangular　concrete　filled　steel　tube　column　respectively,　the　force　mechanism　and　failure　mode　under　the　action　of　bending　moment　are　analyzed,　and　the　factors　leading　to　joint　failure　are　discussed.　Nine　failure　modes　of　joints　under　bending　moment　are　summarized,　including　tensile　fracture　of　blind　bolt,　flexural　yield　of　end　plate,　tensile　yield　of　column　flange　plate,　compressive　yield　of　column　flange　plate,　compressive　buckling　of　column　web　plate,　local　collapse　of　concrete　slab,　yield　of　steel　bars,　local　collapse　of　concrete　in　rectangular　steel　tube　column,　and　compressive　yield　of　column　web　plate.　Based　on　the　failure　modes,　the　calculation　formula　of　the　bearing　capacity　for　each　component　of　the　joint　is　given.　The　calculation　formula　of　flexural　capacities　of　four　joints　under　the　action　of　sagging　and　hogging　moments　with　different　failure　modes　is　given.　Finally,　the　accuracy　of　calculation　formula　is　verified　based　on　the　test　results　of　the　flexural　capacities　of　the　joints.　©　2024　Chinese　Society　of　Civil　Engineering.　All　rights　reserved.