Hollow carcass used for cast-in-situs concrete filling

Abstract

A hollow carcass for filling cast-in-place concrete, comprising a hollow carcass (1) and a support foot (2), the support foot (2) being arranged on the bottom outer wall (3) of the hollow carcass (1), the outer wall (3) A hollow carcass (1) enclosing a cavity (4), characterized in that the intersecting corners of at least two adjacent surfaces of the hollow carcass (1) are arc angles (5) or chamfers (6 ) or at least one of the inner corners (7), at least one outer wall (3) of the hollow carcass (1) is a prefabricated outer wall (8), at least one outer wall (3) is a freshly wiped outer wall (9), prefabricated Outer wall (8) protrudes to have brace (2). In this way, the stress concentration phenomenon at the corner of the hollow carcass in the hollow slab can be effectively eliminated, and cracks can be prevented; at the same time, the hollow carcass is easy to manufacture, high in production efficiency, and low in cost, and is suitable for cast-in-place reinforced concrete or prestressed steel bars. Concrete hollow slabs, floors, roofs, walls, foundation slabs and bridges, especially for hollow beamless floors.

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 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 the corner parts of this kind of building components are more complicated in stress, concentrated in stress, prone to cracks, and even cracked and damaged. At the same time, the production of building components is inconvenient and the production efficiency is low. , it is not convenient for assembly line production, and the corresponding cost is high. Therefore, it is urgently needed to develop a new type of hollow carcass for pouring-in-place concrete filling.

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