Cast-in-situ concrete hollow slab

Abstract

The invention relates to a cast-in-place concrete hollow core slab, comprising a reinforced concrete (1) and light matrixes (2) which are enwrapped in the reinforced concrete (1) and arranged interphasely and between which is provided with cast-in-place reinforced concrete ribs (3), over which is provided with cast-in-place reinforced concrete upper plates (4) and below which is provided with cast-in-place reinforced concrete lower plates (5). The invention is characterized in that the light matrix (2) is provided with at least one hole (6) for concrete in situ pouring, which goes through the upper and the lower shell surface of the light matrix (2), at least a vertical member (7) is arranged in the hole wall and a pier part (8) is arranged in the hole (6) for concrete in situ pouring. The invention is applicable to various hollow core slabs, hollow floors, roofs, foundation slabs, walls and fasting bridges of cast-in-place or prestressed reinforced concrete, and especially applicable to hollow girderless floors.

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 carcass filled in it includes 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, the upper plate, the surrounding side walls, and the lower bottom form a polyhedral cavity, and the upper plate, the surrounding side walls, and the lower bottom contain fiber reinforcements. This formwork member has the characteristics of simple structure and convenient construction and transportation. After being applied to the floor, there i...

AI Technical Summary

Problems solved by technology

This formwork member has the characteristics of simple structure and convenient construction and transportation. After being applied to the floor, there is no force-bearing and force-transmitting member of the floor in the formwork member, especially when the formwork member is larger in size, the performance is better. Obviously, at the same time, the strength of the formwork components is not high, the stiffness is not large, the damage rate is relatively high, and the corresponding cost is relatively high. Therefore, it is urgently needed to develop a new type of cast-in-place concrete hollow slab.

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