Cast-in-situ concrete hollow board

Abstract

The invention is a cast-in-site concrete hollow slab, where the bottom outer wall of each hollow body is equipped with support foot, outer walls compose a cavity, and cast-in-site reinforced concrete rib is arranged between every two adjacent hollow bodies, and it is characterized in that: the corner of at least two adjacent surfaces of the hollow body is at least one of the arch corner, chamber corner and inside corner, and the hollow body is formed by an open basin-like body formed by five outer wall bodies, and a prefabricated outer wall, the prefabricated outer al closes the open surface of the basin-like body and is equipped with smeared-in-site laminated layer, and the basin-like body is whose one side is prefabricated with a closed basin-like body, and the basin-like body is composed of one-piece spread bodies whose sides are mutually cemented. And it is applied to cast-in-site reinforced concrete or prestressed reinforced concrete hollow building covers, roofs, wall bodies, foundation soleplates and bridges, especially hollow, beam-free building covers.

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 floor 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 that the patent No. is ZL00203695.9, and the name is called "combined concrete hidden rib floor slab" utility model patent, which discloses a formwork member in its specification, which can be solid or hollow, and its sh...

AI Technical Summary

Problems solved by technology

But when this kind of hollow carcass is applied to the floor construction, the hollow carcass cannot be accurately arranged in the middle layer of the floor, which affects the construction quality of the floor

For this reason, the patent number is ZL01215092.4, and the utility model patent titled "Building Components" discloses a building component that is a polyhedron, which can be hollow or solid. It is arranged in the middle layer of the floor, and the outer wall of the polyhedron is provided with protruding legs, so that when the floor is poured, the legs can ensure that the hollow multi-faceted main cavity is just at the middle layer of the floor. , so as to better solve the above problems, but when this kind of building component is applied to the cast-in-place concrete hollow floor, at the corner of the building component, the force is more complicated, the stress is concentrated, and cracks are easy to occur, or even cracked and damaged. At the same time, the production of building components is inconvenient, the production efficiency is low, it is not convenient for assembly line production, and the corresponding cost is high

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