Cast-in-situ concrete hollow slab

Abstract

Disclosed is a cast-in-situs concrete hollow slab, which comprises a reinforced-bar concrete (1) and hollow shuttering members (2), the hollow shuttering member (2) are enclosed in the reinforced-bar concrete (1), the hollow shuttering members (2) are arranged alternatively, a cast-in-situ reinforced-bar concrete rib (3) is arranged between them, the hollow shuttering members (2) comprise an upper board (4), peripheral side panels (5), and a lower bottom (6), the upper board (4), the peripheral side panels (5), and the lower bottom (6) enclose a polyhedral hollow shuttering member (2), the upper board (4), the peripheral side panels (5), and the lower bottom (6) is provided with reinforcement article (7), characterized in that at least one of the upper board (4), the peripheral side panels (5), and the lower bottom (6) is provided with reinforced article (7) extended into another and anchored therein. Furthermore, the hollow shuttering members (2) are provided with at least a recess (8), the cast-in-situ concrete forms a cast-in-situ concrete reinforced structure (9) in the recess (8). The invention can be applied to cast-in-situ reinforced concrete or prestressed reinforcement concrete's hollow storied-building roofings, house roofings, walls, foundation bedplates and hollow bridges.

Description

(1) Technical field [0001] The invention relates to a cast-in-place concrete hollow slab. (2) Background technology [0002] At present, the cast-in-place concrete hollow slab is a widely used floor structure. The lightweight permanent tire mold filled in it includes various hollow tubes and boxes, and the boxes are hollow or solid. 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, the upper plate, the surrounding side walls, and the lower bottom form a polyhedral cavity, and the upper plate, the surrounding side walls, and the lower bottom contain fiber reinforcements. Another example is that the application number applied by the applicant on November 23, 2001 is 01140106.0, the publication number is CN1356442...

AI Technical Summary

Problems solved by technology

However, the reinforcements in the upper plate, the surrounding side walls, and the lower bottom of this type of cavity formwork member are anchored because they do not extend into another kind of body, so the integrity of the cavity formwork member is poor and the shock resistance is poor, especially Under the action of alternating load or periodic load, its integrity is even worse. During the construction process of the cast-in-place concrete hollow slab, it brings inconvenience to the construction and increases the construction cost. At the same time, the cast-in-place concrete hollow slab is in the cavity The strength and stiffness of the evacuated parts of the formwork members are relatively poor, and the ability to withstand concentrated loads is relatively low. Therefore, it is urgent to develop a new type of cast-in-place concrete hollow slab.

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