Steel bar and foam combined filled member for hollow floor system

Abstract

The invention provides a steel bar and foam combined filled member for a hollow floor system. The member consists of a plastic foam body and a steel bar body, wherein the steel bar body is made of one or a combination of round steel, flat steel and angle steel and comprises an isolation steel bar and support steel bars; the isolation steel bar and the support steel bars of the steel bar body are integrally manufactured or welded into a whole; the isolation steel bar is arranged on the upper surface of the plastic foam body; the support steel bars pass through the plastic foam body; and the length of the support steel bars is greater than the height of the plastic foam body. The steel bar and foam combined filled member is high in manufacturing speed and production efficiency, labor cost is saved, the problem of insufficient bond stress of the steel bars and cast-in-situ concrete in the prior art is effectively solved, and material cost can be saved; in addition, holes for pouring are formed on the steel bar and foam combined filled member, so that the hollow floor system formed by pouring is dense, flat and attractive.

Description

Technical field [0001] The invention relates to a filling member used for cast-in-situ hollow floor coverings, in particular to a reinforced foam composite filling member used for hollow web floor coverings. Background technique [0002] At present, in the field of cast-in-place reinforced concrete cavity floor technology, cavity thin-walled box members are usually used to cast cavity floor, such as ZL02282207.0 declared by the inventor. According to this patent, a thin-walled box made of inorganic cement cementing material has a thin hollow wall, light weight and high strength. When applied to a cavity floor project, such as ZL200410082381.9 declared by the inventor Small cavity multi-ribbed floor, "hollow thin-walled box body forms a hollow layer in the small multi-rib floor, which can save building concrete, reduce building height, improve floor sound insulation, improve floor structure performance, and improve The purpose of anti-cracking and anti-vibration ability. However...

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Problems solved by technology

At present, magnesium oxychloride and magnesium oxide are usually used to form magnesium oxychloride cement, which is applied on the outer surface of plastic foam blocks. However, since magnesium oxychloride cement contains chloride ions, which have a corrosion effect on steel bars, this method is easy to leave hidden dangers; Another method is to apply sulphoaluminate quick-hardening cement mortar inorganic material with glass fiber cloth as a reinforcing material on the surface of the plastic foam filling member to wrap the plastic foam filling member. Although this method solves the problem of the surface strength of the plastic foam block, Steel bars are not easily trapped in plastic foam blocks, but a large amount of manual sulphoaluminate quick-hardening cement and glass fiber cloth are required to be applied on the surface of the filling member. The production efficiency is low, and the corresponding cost of the product is too high, and the economic benefit is poor

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