Prestressed concrete ribbed laminated slab

The utility model discloses a prestressed concrete ribbed laminated slab, which belongs to the technical field of building components and comprises a concrete bottom plate and a cast-in-place concrete laminated layer covered on the concrete bottom plate, rectangular concrete ribs are arranged on the concrete bottom plate, and the rectangular concrete ribs and the concrete bottom plate are poured into a whole. Rectangular through grooves are formed between the concrete ribs and the cast-in-place concrete laminated layer, weight reducing pieces are installed in the through grooves, anti-crack steel wire meshes are embedded in the concrete bottom plate, and prestressed tendons are arranged in the concrete ribs. The prestressed tendons are arranged at the concrete ribs, and when the concrete bottom plate is thin, the thickness of the concrete protection layer can be increased by moving the prestressed tendons upwards, so that the fireproof requirement is met, and the concrete bottom plate does not need to be thic