With　the　acceleration　of　China＇s　environmental　protection　process,　large-span　and　beyond　code　limit　closed　industrial　buildings　have　been　widely　adopted,　but　its　beyond　code　limit　analysis　has　always　been　the　focus　and　difficulty　in　structural　design.　The　Chinese　structural　codes　also　lack　the　relevant　regulations　for　elastoplastic　analysis　and　design　of　industrial　buildings.　Based　on　the　structure　of　a　large-span　beyond　code　limit　(a　height　of　44m,　span　155m,　exceeding　the　seismic　specifications　of　the　120m)　string　truss　coal　storage　shed　in　Tianjin　Dagang,　the　elastoplastic　analysis　of　rare　earthquakes　was　carried　out.　According　to　the　plastic　hinge　distribution　in　the　calculation　result,　the　weak　part　of　the　structure　is　found,　the　calculation　model　is　optimized,　the　stiffness　of　the　weak　area　is　increased,　and　the　optimized　model　is　calculated　and　verified　to　ensure　the　overall　safety　of　the　structure.　Through　the　elastoplastic　analysis　of　the　actual　engineering　structure　of　the　large-span　beyond　code　limit　coal　storage　shed,　it　has　accumulated　experience　for　the　structural　design　of　large-span　industrial　buildings,　which　can　be　used　as　a　reference　for　similar　engineering　design.　Copyright　©　2018　by　The　Hong　Kong　Institute　of　Steel　Construction.