Hollow slab of concrete cast in-site

Abstract

The present invention relates to a cast-in-situ concrete hollow plate. It includes reinforced concrete and form members. The form members are contained in the reinforced concrete, and are alternatively arranged, between them is set a cast-in-situ reinforced concrete rib, its upper portion is cast-in-situ reinforced concrete upper plate and its lower portion is cast-in-situ reinforced concrete lower plate. Said form member includes upper plate and peripheric side wall; said upper plate and peripheric side wall are connected together and formed into an open basin-shaped member. It is characterized by that on the upper plate of the described basin-shaped member a top window for making concrete construction operation in the lower cavity of lower plate is cut, under the top window at least a supporting component is set, said supporting component can be used for supporting at least two positions of top window edge, and is passed through said top window. Said invention can be used for in-situ casting reinforced concrete or prestressed reinforced concrete hollow floor, roof, wall body, foundation bedplate and open-web bridge, etc.

Description

(1) Technical field [0001] The invention relates to a cast-in-place concrete hollow slab. (2) Background technology [0002] At present, most buildings with brick-concrete structure and frame structure use prefabricated hollow slabs as cast-in-place concrete hollow slabs. This kind of cast-in-place concrete hollow slabs has the advantages of fast construction speed and low cost. There is no firm connection between the boards, and only cement mortar is used to fill the gaps. Therefore, not only the integrity is poor, which is not conducive to earthquake resistance, but also cracks in the gaps and water seepage often occur, causing great inconvenience and psychological pressure to the residents. In order to solve the above problems, many buildings have adopted the method of cast-in-place concrete floor slabs (hollow, solid). Although the cast-in-place concrete floor slab solves the problems of earthquake resistance and cracking, a large number of templates are used during con...

AI Technical Summary

Problems solved by technology

However, the lower floor of this cast-in-place concrete hollow slab is a prefabricated thin plate, and there are joints between them, so the integrity is poor. The construction is inconvenient, the cast-in-place concrete is not dense, and problems such as honeycomb pits are prone to occur. Therefore, it is urgently needed to develop a new type of cast-in-place concrete hollow slab.

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