Shuttering member

Abstract

The invention is a kind of formwork component; it includes the upper board, around sidewalls, subjacent bottom board, all of which combines the hollow cavity, the character lies in: at least one base layer of the upper board, the around sidewalls and the subjacent board has at least a folding layer, and the folding layer and the base layer combines the integer. There has at least a prestressed rib in the subjacent board. Thus, the component is easy to be produced with a high efficiency; the cost is low. At the same time, because the bottom board is a prestressed board which contains prestressed rib, the intensity and rigidity of the formwork component is high, the impact-resisting performance is good, the bottom board isn't apt to crack, and it doesn't affect the quality of floor. And it applies to hollow building floor, house floor, wall, base bottom board and hollow bridge which are poured bar concrete currently or prestressed bar concrete.

Description

(1) Technical field [0001] The present invention relates to a formwork member. (2) Background technology [0002] At present, the cast-in-place concrete hollow floor is a widely used floor structure, and the lightweight permanent tire mold filled in it includes hollow tubes and cavity formwork components. For example, the patent No. ZL99249798.1, which the applicant applied for on November 29, 1999, is 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, and the upper plate, the surrounding side walls and the lower bottom form a polyhedral cavity. Another example is that the application number applied by the applicant on November 23, 2001 is 01140106.0, the publication number is CN1356442, and the name is called "a kind of cavity structure formwork for cast-in-place reinforced concrete floor slab" patent applic...

AI Technical Summary

Problems solved by technology

However, it is inconvenient to manufacture such formwork components, the production efficiency is low, it is not convenient for assembly line production, and the corresponding cost is high. The damage rate of the shell components is high, and it is inconvenient to carry and construct, which increases the construction cost. In addition, if the bottom surface of the formwork components is flush with the bottom surface of the cast-in-place concrete ribs and exposed to the ceiling, it is easy to cause damage during long-term use. Cracks affect the appearance quality of floor ceilings, therefore, it is urgent to develop a new formwork component

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