Reinforced concrete hollow slab

Abstract

Disclosed is a reinforced-bar concrete hollow slab, which comprises a reinforced-bar concrete (1) and hollow members (2), the hollow members (2) are enclosed in the reinforced-bar concrete (1), the hollow members (2) are arranged alternatively, and cast-in-situ reinforced-bar concrete rib (3) is arranged between them, the hollow 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 member, the invention is characterized in that at least a recess (7) is arranged between the side panels (5) and the lower bottom (6), a reinforced structure (8) of the reinforced-bar concrete hollow slab is formed on the recess (7) position of the cast-in-situ concrete, a reversed T-shape rib is formed by the cast-in-situ reinforced bar concrete rib (3) together with the reinforced structure (8) on the corresponding sites, the lower bottom (6) is provided with at least one prestressed rib (9). The invention can be applied to cast-in-situs reinforced concrete or prestressed reinforcement concrete's hollow boards, storied building covers, house roofings, walls, foundation bedplates and hollow bridges, especially for hollow flat slabs.

Description

(1) Technical field [0001] The invention relates to a reinforced concrete hollow slab. (2) Background technology [0002] At present, the cast-in-place reinforced concrete hollow slab is a widely used floor structure. The lightweight permanent tire molds filled in it include 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, and the upper plate, the surrounding side walls and the lower bottom form a polyhedral cavity. Another example is the patent No. ZL00203695.9 applied by Liang Jun, Shijiazhuang City, Hebei Province on February 23, 2000, and the name is called "combined concrete hidden rib floor cover plate" utility model patent, which disclos...

AI Technical Summary

Problems solved by technology

However, after being applied to reinforced concrete hollow slabs, the cast-in-place concrete ribs formed between the cavity members are all rectangular cast-in-place concrete ribs, and their mechanical performance is not very reasonable. It is often necessary to increase the cross-sectional size of the cast-in-place concrete ribs. Increasing the amount of steel bars and concrete will increase the cost of reinforced concrete hollow slabs. At the same time, during the handling, construction and long-term use of such cavity components, the structural bottom plate is prone to breakage and cracking, so the damage rate of cavity components is high. , handling and construction are inconvenient, which increases the construction cost. In addition, if cracks occur after use, it will affect the appearance quality of the reinforced concrete hollow slab ceiling

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