Ventilation drainage support frame

A ventilation drainage support frame, comprising:

• a frame body comprising a plurality of columns in a standing position, a plurality of longitudinal load-bearing beams arranged longitudinally across the columns, and a plurality of transverse load-bearing beams arranged transversely across the longitudinal load-bearing beams, wherein the longitudinal load-bearing beams and the transverse load-bearing beams together form the large-span structure of the frame body;
• a drainage frame comprising a plurality of transverse drainage rods and a plurality of longitudinal drainage rods, which are arranged in a rectangular grid, wherein the transverse drainage rods are positioned above the transverse load-bearing beams, and each of the transverse drainage rods forms a first channel in an upward direction;
• the transverse drainage rods are retracted to form two connecting plates at an opening of the first channel;
• the longitudinal drainage rods are positioned above the transverse drainage rods, and each of the longitudinal drainage rods forms a second channel in an upward direction;
• the drainage frame is set for fixing a plurality of plate bodies, and spaces between the plate bodies are aligned with the first channel and the second channel to facilitate drainage;
• wherein each of the longitudinal drainage rods is retracted to form two abutted plates at an opening of the second channel, and the abutted plates are relatively higher than the connecting plates of the transverse drainage rods;
• two opposite edges of each of the plate bodies abut against the abutted plates of the two longitudinal drainage rods, and the other two opposite edges near the transverse drainage rods are spaced apart by at least one gap, wherein the gap is formed by the height difference between the transverse drainage rods and the longitudinal drainage rods.