Combined reinforced concrete hollow floor

Abstract

A combined reinforced concrete hollow floor comprises a prefabricated thin plate (1), a formwork (2), a concealed rib (3) and an upper plate (4). Each prefabricated thin plate (1) is distantly arranged horizontally. The prefabricated thin plate (1) is fixed with the formwork (2). The concealed rib (3) is arranged between the adjacent prefabricated thin plates (1) or the formworks (2). The upper plate (4) is covered on the formwork (2) and is integrated with the concealed rib (3). The invention is characterized in that all transverse corner parts of the formwork (2) are arranged to transverse arc angle (5). The part of cast-in-situ concrete on the transverse arc angle (5) forms a reinforcing rod (6) of the intersecting part between the cast-in-situ concrete concealed rib (3) and the upper plate (4). The notches of vertical grooves (11) on two formworks (2) are folded relatively. In this way, the hollow floor is suitable to be used for various hollow building roofs, building covers, walls, base plates and hollow bridge of the cast-in-situ reinforced concrete or prestressed reinforcement concrete, and is especially suitable to be used for the hollow beamless and multi-ribbed floor covers.

Description

[0001] This application is a divisional application of an invention patent application with an application date of January 6, 2004, an application number of 200410002334.9, and a title of “A Composite Reinforced Concrete Hollow Floor Slab”. (1) Technical field [0002] The invention relates to a composite reinforced concrete hollow floor slab. (2) Background technology [0003] At present, most of the buildings with brick-concrete structure and frame structure use prefabricated hollow-core slabs as floor slabs. This kind of floor slab has the advantages of fast construction speed and low cost, but because there is no firm connection between two adjacent prefabricated hollow-core slabs , Only cement mortar is used to fill the gaps, so not only the integrity is poor, which is not conducive to earthquake resistance, but also cracks and water seepage often occur, causing great inconvenience and psychological pressure to the residents. In order to solve the above problems, many b...

AI Technical Summary

Problems solved by technology

However, at the transverse corners of the formwork, where the cast-in-place concrete hidden ribs intersect with the cast-in-place concrete upper slab, the stress on the floor is more complicated, the stress is concentrated, and cracks are easy to occur, or even cracked and damaged.

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