What do various symbols in steel structure drawings represent?

Steel structure drawing symbols:

GJ steel frame, GL steel frame beam or GJL steel frame beam, GZ steel frame column or GJZ steel frame column, XG tie bar, SC horizontal support, YC corner brace, ZC inter-column support, LT purlin, TL joist, QL wall beam, GLT rigid purlin and WLT roof purlin.

MZ door jamb, ML door lintel, t brace, CG brace, HJ truss, FHB composite plate, YG: compression bar or circular tube (respectively from the bill of materials), XG: tie bar, LG: tube drawing, QLG: wall brace, QCG: wall brace, GZL straight brace, GXL diagonal brace, gj3-.

Extended information:

Steel structure design drawing is divided into two stages: steel structure design drawing and steel structure construction detail drawing. The design drawing of steel structure shall be completed by a design unit with design qualification, and the content and depth of the design drawing shall meet the requirements of drawing up the detailed drawing of steel structure construction; Detailed drawings of steel structure construction (i.e. fabrication drawings) should generally be completed by fabrication units with special design qualification for steel structures, or by other units with this qualification.

note: if the design contract does not specify the requirement to design the construction details of the steel structure, the content of the steel structure design is only the steel structure design drawing.

Baidu encyclopedia-steel structure

hownet-steel structure

hownet-research on entity-based steel structure construction drawing system.