Reinforced concrete hollow floor slab and construction method

Abstract

The invention discloses a reinforced concrete hollow floor slab and a construction method, and the reinforced concrete hollow floor slab comprises cast-in-situ dense ribs (1), prefabricated side walls (2), a prefabricated baseplate (3) and a cast-in-situ top plate (4), wherein two or more than two gaps (15) are arranged at the end parts of the prefabricated baseplate (3), and supporting convex blocks (18) matched with the gaps (15) are arranged at the bottom parts of the prefabricated side walls (2) or convex blocks (7) at the bottom parts of the prefabricated side walls (2). When in construction, a formwork (11) is firstly erected, steel bars (12) are bound up and the prefabricated side walls (2) are placed; the prefabricated baseplate (3) is placed on a shelving part (9), concrete is poured, after the concrete achieves a certain strength, the formwork (11) and the shelving part (9) are detached; the prefabricated baseplate (3) is placed on the supporting convex blocks (18) matched with the gaps (15), the prefabricated side walls (2), the prefabricated baseplate (3), the cast-in-situ top plate (4) and the cast-in-situ dense ribs (1) form a cavity (5), and mortar (17) is plastered below the prefabricated baseplate (3) so as to form the whole hollow floor slab. The hollow floor slab is light in weight, low in cost and good in stress performance, integrity and impermeability.

Description

Technical field: [0001] The invention relates to the field of building construction, in particular to a reinforced concrete hollow floor slab and a construction method. Background technique: [0002] Reinforced concrete cast-in-place hollow slabs consume less material than reinforced concrete solid slabs, and the slabs are lighter in weight. The existing reinforced concrete hollow slabs (patent application number 200420035588.6) adopt the technology of placing reinforced concrete hollow prefabricated components vertically and horizontally on the bottom reinforced concrete On the top, the gaps between the vertical and horizontal hollow prefabricated components are filled with reinforced concrete to form dense ribs to form a hollow floor slab. The patent with the publication number of CN 1900449A is to place a plurality of hollow prefabricated component frames on the formwork, and the prefabricated component covers are covered on the hollow component frames, and the gaps betwe...

AI Technical Summary

Problems solved by technology

These two kinds of hollow-core slabs have the following disadvantages: steel bars and concrete consume a lot of materials, and their own weight increases the cost of the slab, and the integrity and impermeability of the slab are not good.

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