Cast-in-place concrete hollow plate

Abstract

The invention is a cast-in-site concrete hollow slab, comprising reinforced concrete and thin wall pipes, where the thin wall pipes are wrapped in the reinforced concrete, cast-in-site reinforced concrete ribs are arranged longitudinally between them, and each thin wall pipe comprises hollow pipe body and stoppers, where the stoppers close the hollow pipe body to form a closed hollow thin wall pipe, at least one of the hollow pipe body and the stoppers contains reinforcer, and it is characterized in that the cross section of the hollow pipe body is a quadrangle in shape, at least one corner of the quadrangle is a chamfer, and at least one surface of the hollow pipe body is planar or closely planar in shape, and the cast-in-site concrete forms cast-in-site reinforcing rib at the chamfer. And the invention is applied to cast-in- site reinforced concrete or prestressed reinforced concrete hollow floor systems, house systems, walls, foundation slabs 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 one of the forms of the floor structure. In the prior art, the hole-forming components of cast-in-place concrete hollow slabs are permanent mandrels, such as paper tubes, plastic tubes, metal bellows, and light-weight mandrel materials. Floor weight. For example, the patent number applied by the applicant is ZL99249755.8, and the name is a utility model patent named "fiber-reinforced thin-walled cylinder for filling cast-in-place reinforced concrete". It includes a hollow pipe body and a plug. The end is closed to form a thin-walled tube with a closed cavity, and at least one of the hollow tube body and the plug contains reinforcements such as fibers. This kind of thin-walled pipe is used in the cast-in-place concrete hollow slab. Since the thin-walled pipes actually used are circular thin-walled...

AI Technical Summary

Problems solved by technology

This kind of thin-walled pipe is used in the cast-in-place concrete hollow slab. Since the thin-walled pipes actually used are circular thin-walled pipes, the amount of reinforced concrete in the cast-in-place concrete hollow slab is large, the evacuation rate is low, and the thin-walled pipe is easy to roll. It is difficult to fix and locate, and the weight of the corresponding cast-in-place concrete hollow slab is heavy, the mechanical properties are poor, and the shock resistance is poor

The prismatic pipe with a polygonal cross-section is easy to be damaged at the corners, the production mold is complicated, and it is inconvenient to carry. , the concrete components are easy to crack and damage from here

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