Cast-in-situs concrete hollow slab

Abstract

The invention relates to a cast-in-situ concrete hollow board which comprises reinforced concrete (1) and cavity module shell components (2) that are wrapped in the reinforced concrete (1), cast-in-situ reinforced concrete ribs (3) are arranged among the cavity module shell components (2). The invention is characterized in that an upper board (4) and peripheral side walls (5) and a lower board (6) of each closed cavity module shell component (2) are composed of components (7) which consist of at least one precast slab (8) and at least one cast-in-situ slab (9) that is felted with the precast slab (8), the upper surface of the upper board (4) is flush with the upper surface of the cast-in-situ hollow board or the lower surface of the lower board (6) is flush with the lower surface of the cast-in-situ hollow board or the upper surface of the upper board (4) and the lower surface of the lower board (6) are flush with the upper surface and the lower surface of the cast-in-situ hollow board, the precast slab (8) is an integral precast module shell which comprises the upper board (4) and the peripheral side walls (5), and the lower board (6) is formed by the congruence of the precast slab (8) and the cast-in-situ slab (9). Therefore, the invention is suitable for the use of hollow building covers, room covers, wall bodies, foundation base boards and hollow bridges of cast-in-situ reinforced concrete or prestressed reinforced concrete, more particularly for the use of hollow building covers without beams.

Description

[0001] This application is a divisional application of an invention patent application with an application date of June 6, 2005, an application number of 200510074455.9, and a title of "a cast-in-place concrete hollow slab". (1) Technical field [0002] The invention relates to a cast-in-place concrete hollow 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 in the gaps, causing great inconvenience and psychological pressure to the residents. In order to solve the above problems, many buildings have ado...

AI Technical Summary

Problems solved by technology

However, when the formwork components in this floor slab are produced, it is inconvenient to make, the production efficiency is low, it is not convenient for assembly line production, the production cost is high, and the construction cost of the corresponding cast-in-place concrete hollow slab is high. Therefore, a new type of in-situ concrete is developed. Concrete hollow slabs are urgently needed

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