Special necking netted box-shaped cavity component for built-in filling of cast-in-situ hollow floor

Abstract

The invention particularly relates to a special necking netted box-shaped cavity component for built-in filling of a cast-in-situ hollow floor. The special necking netted box-shaped cavity component is formed by assembling a special necking net, side sealing plates, supporting pieces and anti-floating pull pieces. The special necking net is folded to form a main body of the special necking netted box-shaped cavity component provided with a box top face, two box body side faces and a box bottom face. The side sealing plates seal the two ends of the main body of the special necking netted box-shaped cavity component. The supporting pieces form a supporting skeleton in a closed space defined by the special necking net and the side sealing plates. The special necking net is adopted to manufacture the box-shaped cavity component for built-in filling of the cast-in-situ hollow floor, is good in composite compatibility with concrete, can completely prevent concrete mortar from permeating the box-shaped component and does not generate buoyancy, so that quality is improved, the construction auxiliary cost is reduced, and the construction convenient level and the engineering effect are greatly improved.

Description

technical field [0001] The invention relates to a building filling prefabricated component used for a cast-in-place hollow floor, in particular to a special closed mesh box-shaped cavity member used for built-in filling of a cast-in-place hollow floor. Background technique [0002] With the development of technology in the field of construction engineering, the architectural needs of different spaces make the building structure gradually subdivided. Buildings such as underground garages, shopping malls, and office buildings are suitable for the application of large bays and beamless structures. The technology of cast-in-place concrete hollow floor was born based on such demand. In large-span and large-bay building structures, compared with traditional solid floors or prestressed floors, cast-in-place hollow floors have the advantages of lower floor height, large span, light weight, strong seismic performance, heat insulation, fire prevention and insulation. Good sound perfo...

AI Technical Summary

Problems solved by technology

Moreover, the built-in filling mandrel needs to be assembled and used at the construction site, which slows down the progress of the project and reduces the construction production efficiency

[0010] In view of the above-mentioned many defects in the various filling prefabricated components in the prior art, a kind of built-in filling component with the comprehensive functional characteristics of the prior art is developed to make the overall performance of the hollow floor better, so that it can make full use of the concrete Surface tension changes the shape of the steel grid to prevent the concrete mortar from penetrating into the steel grid, does not produce buoyancy, has good compatibility with concrete, and enhances the structural bearing capacity. The same steel grid is used to form the side walls at both ends of the composite frame body. And support the steel mesh to form the height of the inner space between the frame top and frame bottom of the composite frame, bear the construction load of the frame top and the positive pressure of the upper flange concrete, realize the industrial production of mesh box components, overcome the existing technology There are a large number of supports inside the frame and the blockage of the frame is troublesome and costly. Breaking through the existing technology of cast-in-place hollow floors has become a technical problem that needs to be solved urgently in the technical field of cast-in-place hollow floors

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