Furred ceiling structure of large-span underground factory building

The utility model discloses a furred ceiling structure of large-span underground factory building, the two long rock anchor beams of having accomplished including being under construction that lead to that are located the upstream and downstream both sides, be located the steel arched girder that spanes in the upstream and downstream direction between two rock anchor beams, the supporting is held in the palm and the purlin at the arch waterproof layer purlin of steel arched girder top flange, with the fixed arch waterproof board together of arch waterproof layer purlin, many steel rings and steel jib that steel arched girder lower flange hung, the main joist of horizontal decorative layer is hung to steel jib below, be fixed with horizontal decorative layer purlin below the main joist, at the fixed decorative board of the lower surface mounting of horizontal decorative layer purlin, arrange a plurality of air pipe in the space between horizontal decorative layer and arch waterproof layer, at a plurality of maintenance plank roads of the last surface mounting of main joist. The utility model discloses a furred ceiling structure of large-span underground factory building safe and reliable, waterproof performance is good, ventilation equipment arranges the convenience, elegant appearance, construction convenience, construction cycle short.