Cast-in-situ concrete hollow slab

Abstract

The invention provides a cast-in-situ cored hollow slab, which includes a reinforced concrete (1), a prefabricated thin slab (2) and a cavity shuttering component (3); the cavity shuttering component (3) is arranged on the prefabricated thin slab (2) and the lower bottom surface of the prefabricated thin slab (2) is flush with the bottom surface of the cast-in-situ concrete hollow slab, a cast-in-situ concrete rib (4) which is formed by the reinforced concrete (1) is arranged among the cavity shuttering components (3), a cast-in-situ concrete overlapped layer (5) which is formed by the cast-in-situ reinforced concrete (1) and is connected with the cast-in-situ concrete rib (4) is arranged on the cavity shuttering components (3); a cavity shuttering component (2) includes an upper plate (6) and a surrounding wall (7), which enclose an open cavity shuttering, the invention is characterized in that the cavity shuttering component (3) is composed of at least two prefabricated sheets (8) that are put together, the prefabricated sheets (8) include at least two connected prefabricated sheets and form an open cavity or closed cavity, the prefabricated sheets (8) are connected together by a connecting member (9), the upper surface of the upper plate (6) is flush with the upper surface of the cast-in-situ concrete cored slab and at least one prefabricated sheet (8) is provided with at least one post-cast overlapped layer (22). The invention is applicable for constructing the hollow flat slab.

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 200510075799.1, 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, and it is not convenient for assembly line production. Especially in the transportation and construction process, the formwork transportation is extremely inconvenient, and the overall formwork components occupy a lot The transportation space wastes a lot of transportation resources and increases the transportation cost, and the formwork is easily damaged due to bumps, extrusions and collisions during transportation, and the corresponding cost is high. Therefore, the corresponding cast-in-place concrete hollow slab has high cost, so , the development of a new type of cast-in-place concrete hollow slab is urgently needed

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