In situ casting hollow panel

Abstract

A cast-in-situs concrete hollow board comprises a reinforced bar concrete (1) and hollow core dies (2), wherein the hollow core die is contained in the reinforced bar concrete (1), the hollow core dies (2) are arrayed line to line, the mutual spaces of the hollow core dies are provided with cast-in-situs reinforced bar concrete ribs (3), the upside of the cast-in-situs reinforced bar concrete ribs (3) is provided with cast-in-situs reinforced bar concrete upper boards (4), and the downside is provided with cast-in-situs reinforced bar concrete lower boards (5), and each of the hollow core dies (2) contains a core die outer wall (6) and a sealed hollow cavity which is formed by the sealed outer wall (6). The invention is characterized in that the invention can be folded into slab state and is stacked, which reduces the transporting cost, and the connection style of hinge joint is steady and reliable, the manufacturing difficulty is low, and the invention is suitable for the employment in hollow boards, hollow floors, roofs, foundation bottom board, walls, and hollow bridges of cast-in-situ reinforced concrete or inherent stress reinforced concrete, in particular to hollow floors without beams.

Description

(1) Technical field [0001] The invention relates to a cast-in-place concrete hollow slab. (2) Background technology [0002] At present, in the prior art, the hole-forming member of the cast-in-place reinforced concrete hollow slab is a permanent mandrel, such as a paper tube, a plastic tube, a metal bellows, and a mandrel made of lightweight materials. These tubular mandrels or components are mainly considered to evacuate the concrete and reduce the weight of the hollow slab. For example, the patent No. ZL99249775.8 applied by the applicant is a utility model patent named "fiber-reinforced thin-walled tube for filling cast-in-place reinforced concrete". It consists of a hard thin-walled tube and plugs at both ends. The two ends of the hard thin-walled tube are closed to form a closed cavity. The hard thin-walled tube wall is composed of a carcass and a cementing material. The carcass can be glass fiber or carbon fiber or organic fiber or non-woven fabric or fiber For brai...

AI Technical Summary

Problems solved by technology

However, the half part of this hollow thin-walled member cannot be folded into a plate shape, so the space occupied during transportation is still large, and the transportation volume is still small each time, thereby greatly improving the performance of cast-in-place concrete hollow slabs. Therefore, the development of a new type of cast-in-place concrete hollow slab is urgently needed

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