Hollow casing for in-situ concrete casting

Abstract

The hollow casing for in-situ concrete casting includes hollow casing, and arm braces set on outer bottom wall, and the outer walls enclose to form the hollow casing with cavity. The present invention features that the hollow casing is one hexahedron comprising one integral five-sided open-mouthed body and one prefabricated outer wall to close the opened mouth so as to form one completely closed hollow casing. The hollow casing has easy fabrication, high production efficiency, high integrity, low cost, simple structure, high strength, high rigidity and other features. The present invention is suitable for hollow slab, floor slab, roof, wall, base bottom and bridge of in-situ cast reinforced concrete or pre-stressed reinforced concrete, especially hollow flat floor slab.

Description

(1) Technical field [0001] The invention relates to a hollow matrix for filling cast-in-place concrete. (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 holl...

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 No. is ZL01215092.4, and the name is "building component" utility model patent. The disclosed building component is a polyhedron, which can be hollow or solid. In order to ensure that this building component is applied to the floor 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 the production of this kind 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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