Cast-in-situs concrete hollow slab

Abstract

A cast-in-situ concrete hollow slab comprises a reinforced concrete (1) and hollow shuttering components (2), wherein, the hollow shuttering components (2) are wrapped in the reinforced concrete (1), a cast-in-situ reinforced concrete rib (3) is arranged between the adjacent hollow shuttering components (2), each of which consists of an upper slab (4), surrounding sidewalls (5) and a lower board (6), the upper slab (4), the surrounding sidewalls (5) and the lower board (6) enclose the closed hollow shuttering component (2), prefabricated components (7) are assembled together to form the hollow shuttering component (2) and are at least two precast slabs (8), the upper surface of the upper slab (4) is flush with the upper surface of the cast-in-situ concrete hollow slab, or the lower surface of the lower board (6) is flush with the lower surface of the cast-in-situ concrete hollow slab, or the upper surface of the upper slab (4) and the lower surface of the lower board (6) are flush with the upper and lower surfaces of the cast-in-situ concrete hollow slab, the precast slabs (8) are connected by void with filling gap, and a connector (9) or a reinforcer is exposed at the gap between the precast slabs (8). Consequently, the present invention is applicable to various hollow floors, roofs, walls, foundation slabs and open spandrel bridges, which apply cast-in-situ reinforced concrete or prestressed reinforced concrete, and the present invention is particularly applicable to hollow beamless floors and multi-ribbed floors.

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 200510074457.8, 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. Moreover, the formwork is easily damaged due to bumps, extrusions and collisions during transportation, and the damage rate is high. The construction cost of the corresponding cast-in-place concrete hollow slab is high. Therefore, It is urgently needed to develop a new type of cast-in-place concrete hollow slab

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