Cavity structural member for cast-in-place concrete moulding

Abstract

The cavity member for in-site concrete deposition includes upper plate, side walls and lower plate to form the polyhedral cavity member; and features that there are at least one bottom rib notch set between side wall and the lower plate and at least one raised module set in the side walls and / or the upper plate of the cavity member. When the cavity member is used in in-site concrete deposition of floor slab, the formed floor slab with turned T-shaped rib has raised mechanical performance, and the raised module further evacuates the concrete in the floor slab to raise the mechanical performance and anti-earthquake performance of the floor slab. The present invention is suitable for use in in-site deposited and pre-stressed hollow reinforced concrete floor slab, roof slab, wall, base slab and open web bridge.

Description

(1) Technical field [0001] The invention relates to a cavity component for cast-in-place concrete molding. (2) Background technology [0002] At present, cast-in-situ concrete hollow floor is a widely used floor structure. The lightweight permanent tire mold filled in it has various hollow tubes and boxes, and the boxes are hollow or solid. For example, the applicant applied for a patent number ZL99249798.1 on November 29, 1999, a utility model patent named "fiber-reinforced thin-walled member for reinforced concrete filling", which discloses a thin-walled formwork member including an upper plate, The surrounding side walls, the lower bottom, the upper board, the surrounding side walls, and the lower bottom enclose a polyhedral cavity. Another example is the patent number ZL00203695.9 filed by Liang Jun of Shijiazhuang City, Hebei Province on February 23, 2000, named "Combined Concrete Concealed Rib Floor Cover" utility model patent. The description discloses a formwork member. I...

AI Technical Summary

Problems solved by technology

However, after being applied to the hollow floor, the cast-in-place concrete ribs formed between the cavity components are all rectangular cast-in-place concrete ribs, and their mechanical performance is not very reasonable, so it is often necessary to increase the cross-sectional size of the cast-in-place concrete ribs The consumption of steel bar and concrete increases the cost of the floor, therefore, it is urgently needed to develop a new type of cavity member for cast-in-place concrete molding.

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