Self-supporting reinforced truss floor deck support structure

Abstract

The invention discloses a self-supporting steel bar truss floor support plate support structure. The self-supporting steel bar truss floor support plate support structure comprises a steel bar truss floor support plate and a support component which is positioned below the steel bar truss floor support plate; the support component is abutted against a galvanized steel sheet, and is supported right below a portion of a plurality of contact points of web member steel bars and the galvanized steel sheet, and the portion is a support portion of the lower end surface of the galvanized steel sheet; and fasteners are arranged on the contact points of the web member steel bars and the galvanized steel sheet except for the contact points positioned right above the supporting portion. Compared with the prior art, the self-supporting steel bar truss floor support plate support structure has the features that the thicknesses of filled steel bar protective layers can be guaranteed effectively, deformation of the galvanized steel sheet is reduced effectively, and later recycling of steel molding plates is facilitated; and flatness and appearance quality of concrete floors are greatly improved.

Description

technical field [0001] The invention relates to the field of concrete structure building construction, in particular to a self-supporting reinforced truss floor deck support structure. Background technique [0002] The steel truss floor deck is a kind of unsupported pressure-type composite floor deck; the steel truss is finalized and processed in the background processing field, and the on-site construction needs to first fix the pressure plate on the steel beam with bolts, and then place the steel truss Binding is carried out, and concrete is poured after acceptance. For example, Chinese patent document CN 103352563 A discloses a self-supporting slab-type reinforced grid composite template, including a self-supporting slab-type reinforced grid unit, which includes multiple rows of longitudinal steel trusses, and a single row of longitudinal steel trusses consists of upper chord bars, two The lower chord bar and the corrugated bar arranged between the upper chord bar and th...

AI Technical Summary

Problems solved by technology

However, since the galvanized steel plate directly in contact with the square wood has a gap in the thickness of the protective layer, the deformation of the galvanized steel plate will cause negative deflection at the top position during pouring, which will affect the thickness of the protective layer of the steel bar and the appearance of the concrete

like figure 1 , 2 As shown, the common roof support scheme for the large-span steel truss floor deck is that the steel truss floor deck includes upper chord steel bars 101, lower chord steel bars 102, web bar steel bars 103, galvanized steel plates 100 and fasteners 200, and the fasteners 200 are installed on The web reinforcement 103 and the galvanized steel sheet 100 are used to fasten the web reinforcement 103 and the galvanized steel sheet 100. Since the fastener 200 protrudes downward from the lower end of the galvanized steel sheet 100, only the support assembly 1 It is arranged between two rows of fasteners 200, where it corresponds to the upper chord steel bar 101 of the steel bar truss in the vertical direction. The upper chord steel bar 101 is not in contact with the galvanized steel plate 100 and there is a large gap. The steel plate at the place will produce negative deflection deformation, and the steel protection layer filled here will become thinner, and the floor slab will also have obvious appearance defects

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