Light-weight composite floor slab structure for assembling integral prefabricated double thin plates, and construction method

The invention relates to a light-weight composite floor slab structure for assembling integral prefabricated double thin plates, and a construction method. The composite floor slab structure comprises a prefabricated lower thin plate, a fine concrete reinforced layer, a prefabricated upper thin plate, a leveling layer and a decorative layer from the bottom up, wherein the prefabricated lower thin plate is simultaneously fixed on a beam and a wall body; the prefabricated upper thin plate and the prefabricated lower thin plate are fixed with each other through reinforced plates, and are formed by splicing component plates; the component plates are in insertion connection with each other through concave-convex connecting tongue-and-grooves on the side surfaces, are clamped up and down through steel plates, and are fixed in virtue of screw rods and screw nuts; filling holes and gas vents are formed in the prefabricated upper thin plate; embedded connecting troughs are formed in the upper surface of the prefabricated lower thin plate in a longitudinally and transversely staggered manner; the space between the prefabricated lower thin plate and the prefabricated upper thin plate adopts a hollow structure or is filled with a bubble concrete light-weight layer. The floor structure has the characteristics of being high in construction speed, convenient to mount, high in connetion strength between the thin plates, light in mass of floors, small in amount of mold plates required, short in continuous construction interval period of the upper structure and the like, and has good technical and economic benefits.