Cast-in-situ reinforced concrete hollow slab

Abstract

The invention relates to a cast-in-situ concrete hollow slab, comprising reinforced concrete (1) and thin wall pipes (2), wherein, the thin wall pipes (2) are wrapped in the cast-in-situ reinforced concrete (1); each thin wall pipe (2) is formed by a pipe body (3) and a chock plug (4); cast-in-situ concrete longitudinal ribs (5) are arranged between the thin wall pipes (2) along the long direction of the thin wall pipes (2). The invention is characterized in that: a connecting piece (6) is connected between the pipe body (3) and the choke plug (4); end heads of the connecting piece (6) are fixed in the pipe body (3) or the choke plug (4); the pipe body (3) or the choke plug (4) is provided with a butt-joint device (21) or / and a positioning device (22). In this way, the hollow slab is applicable for various cast-in-situ concrete floors, roofs, walls, subbase footings and structures of bridge projects, in particular applicable for hollow girderless floors.

Description

[0001] This application is a divisional application of an invention patent application with an application date of May 10, 2004, an application number of 200410038954.8, and a title of "a cast-in-place reinforced concrete hollow slab". (1) Technical field [0002] The invention relates to a cast-in-place reinforced concrete hollow slab. (2) Background technology [0003] At present, in order to reduce the self-weight of the cast-in-place floor and save the amount of concrete, some core filling materials are usually added to the concrete, such as perlite blocks, polystyrene foam, and thin-walled tube components. For example, the patent number is ZL99232921.3, and the utility model patent titled "thin-walled cylinder for filling cast-in-place reinforced concrete" discloses a thin-walled cylinder member, including a pipe body and a plug. Both ends of the tube are closed to form a closed cavity. The cross-section and plug shape of the hard thin-walled tube can be round, square, ...

AI Technical Summary

Problems solved by technology

This kind of thin-walled pipe is applied to the cast-in-place reinforced concrete hollow slab, and its thin-walled pipe is wrapped in the cast-in-place reinforced concrete. , the pipe body and the plug are made first, and then the pipe body and the plug are glued into a whole. In the process of handling and construction, the plug is often separated from the pipe body and falls off, which affects the quality of the hollow plate. And follow-up construction, increasing the construction cost of the hollow slab

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