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), 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), 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 connecting member (8). The invention can be applied to various cast-in-situ reinforced-bar concrete or prestressed reinforced-bar concrete hollow building roofings, house roofings, walls, foundation bedplates or hollow bridges, especially for hollow flat slabs.

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 body, so the integrity of the cavity formwork member is poor and the vibration 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 will bring inconvenience to the construction and increase the construction cost. At the same time, the construction of the cast-in-place concrete hollow slab In this case, the layout and positioning of the cavity formwork components is inconvenient, and it is easy to cause displacement or misalignment. The thickness of the cast-in-place concrete upper slab or the cast-in-place concrete lower slab is inconsistent, which affects the overall quality and mechanical performance of the cast-in-place concrete hollow slab and increases the difficulty of construction. Therefore, it is urgently needed to develop a new type of cast-in-place concrete hollow slab.

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