Roof steel structure for cement production line clinker warehouse and construction method thereof

The invention discloses a roof steel structure for a cement production line clinker warehouse and a construction method thereof. The warehouse is a reinforced concrete circular silo of which the diameter is 40 meters, and comprises a roof steel structure, an H-shaped welded steel part annular beam, an equipment steel platform and a warehouse top house, wherein the roof steel structure consists of18 sloping beams, an inclined support, a horizontal support, a Z-shaped steel purlin and a brace; a circular steel plate is paved on the H-shaped welded steel part annular beam; the equipment steel platform consists of a bracket, a rectangular main beam and a planar steel plate; and the warehouse top house consists of steel upright posts and roof beams, wherein the lower port of each sloping beamis connected with a pre-embedded connecting piece on the top of a silo wall in a bolting and welding way; the upper port of each sloping beam is welded with the annular beam; and roof colored steel plates are paved on all roof