Cast-in-place concrete hollow core slab

Abstract

The present invention relates to a kind of in-situ concrete hollow slab. It includes reinforced concrete and hollow form bodies. The hollow form bodies are wrapped in the reinforced concrete, on the outer wall of hollow form body undersurface a supporting pin is set, said outer wall can be formed into the hollow form body with hollow cavity, between the adjacent hollow form bodies a cast-in-situ reinforced concrete rib is set. It is characterized by that the crossed corner of at least two adjacent faces of the described hollow form body is at least one kind of curved corner, chamfered corner or inside corner. Said invention is applicable to construction of in-situ reinforced concrete or prestressed reinforced concrete hollow floor, roof, wall body, foundation base plate and bridge, specially, it is applicable to construction of hollow beamless floor.

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

In this way, since the intersecting corners of at least two adjacent surfaces of the hollow carcass are at least one of arc angles, chamfers or inner corners, anti-collision tie bars are arranged in the legs, and are anchored to the legs and the outer wall at the same time. Therefore, it can effectively eliminate the stress concentration phenomenon at the corner of the hollow carcass in the hollow slab, prevent the generation of cracks, and can withstand large concentrated loads without damage, improving the mechanical properties of the hollow slab; at the same time, the supporting feet It has good integrity, high strength, high rigidity, an

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