Pre-stressed concrete truss composite slab and manufacturing method thereof

Abstract

The invention relates to a pre-stressed concrete truss composite slab and a manufacturing method thereof. The pre-stressed concrete truss composite slab comprises a concrete base plate. A truss is arranged on the concrete base plate. The truss comprises an upper chord, first webs and second webs are respectively arranged on two sides of the upper chord, the first webs and the second webs are continuously-bent reinforced steel bars, and the top bent parts of the first webs and the second webs are connected with the outer wall of the upper chord. When hoisting equipment grabs the upper chord for hoisting, the webs, transverse assisting reinforced steel bars and pre-stressed longitudinal ribs are stressed, and the webs are prevented from being stressed independently and falling out of the concrete base plate 10.

Description

technical field [0001] The invention relates to a composite slab of concrete truss for building, in particular to a composite slab of prestressed concrete truss and a manufacturing method thereof. Background technique [0002] In recent years, concrete truss laminated panels have been widely used in the construction industry. This product can reduce the amount of wet work steps and construction formwork and scaffolding in the construction process, reduce labor consumption, reduce construction difficulty, and improve construction efficiency. The existing concrete truss composite slab is prefabricated with a truss composed of upper chords, webs and lower chords. When the concrete floor is poured, the lower chord and part of the webs are embedded in the concrete floor to form a concrete truss composite slab. The lower chord is also used as a concrete The longitudinal inner reinforcement of the base plate. The concrete truss laminated slab of this structure needs to ensure that...

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Problems solved by technology

The concrete truss laminated slab of this structure needs to ensure that the thickness of the concrete bottom slab is above 60mm, otherwise the bottom slab will be distorted and cannot meet the rigidity requirements of the laminated slab during the construction process, and the greater the thickness of the concrete bottom slab, the greater its self-weight , thereby increasing the self-weight of the overall structure of the building, resulting in an increase in the volume of the basic structural components such as beams, columns, walls, etc., reducing the utilization rate of the building's indoor area and the headroom of the floor height, and the strength of the concrete truss laminated slab itself Also limited, cracks are prone to occur during transportation and installation, and the defective rate is high

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