Cast-in-situ concrete hollow board

Abstract

The in-situ cast hollow slab includes reinforced concrete, shuttering members arranged inside reinforced concrete in some interval and with in-situ cast reinforced concrete ribs in between, in-situ cast reinforced concrete upper slab on the shuttering members and in-situ cast reinforced concrete lower slab below the shuttering members. The shuttering member is one opened basin-shaped member including four side walls with upper slab and features one skylight with movable cover in the upper slab for concrete construction. The present invention is suitable for in-situ cast or pre-stressed reinforced concrete hollow floor slab, roof, wall, foundation slab and hollow bridge, especially hollow flat floor slab.

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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