Integrally assembled hidden beam hollow two-way floor system and method for assembling the same

A method for assembling an integrally assembled hidden beam hollow two-way floor system, comprising:

• step 1:
• molding each of precast slabs once through an inverted casting method, the precast slab being hollow and having two-way rib compartments, wherein a formwork is prepared based on an outer contour of the precast slab, then a plurality of compartments are fixed in a matrix, two-way forced rebars are tied, prepared bolt holes are fixed, concrete is cast and cured in a shape, connecting grooves are prepared at a periphery of a surface of the precast slab provided with no compartment, and then the precast slab is acquired by turning over after the curing;
• step 2:
• processing and assembling a steel structure of the floor system, wherein honeycomb steel beams of the steel structure are manufactured in a factory, the prepared bolt holes at lower flanges are used to manufacture a U-shaped hoop, and the honeycomb steel beams are transported to a site to serve as primary beams, or secondary beams, or primary beams and secondary beams;
• step 3:
• assembling the precast slabs, wherein each of the precast slabs is hung to a position between the secondary beams manufactured by the honeycomb steel beams or between one of the primary beams and one of the secondary beams formed by the honeycomb steel beams, the precast slab is first placed at one of the lower flanges at a connection position, each end of two precast slabs of the precast slabs is supported by the one of the lower flange and connected to the one of the lower flange through a bolt, and side ends of the two precast slabs at a seam are connected to each other through a U-shaped hoop;
• and
• step 4:
• casting concrete, wherein debris is first cleaned, a surface of each of the precast slabs is soaked with water, then cast-in-place concrete is cast to form a cast-in-place concrete rib and a surface layer, and then curing and molding are performed to complete the assembling of the integrally assembled hidden beam hollow two-way floor system;
• wherein the method further comprises, between the step 3 and the step 4;
• laying water pipelines and electricity pipelines in an empty space on an outer side of slab ribs and arranged between two precast slabs and in honeycombs of honeycomb webs;
• and
• then tying hogging moment rebars, the hogging moment rebars passing through honeycomb holes of the honeycomb steel beams or being fixed to upper surfaces of upper flanges.