Truss floor deck common sense inventory

The truss type floor deck is a kind of formwork and floor system, using 0.5mm thick galvanized steel plate as the bottom mold, on which a one-way steel cage is pre-made, and then directly installed on the steel beam as the floor slab, which can mainly replace the profiled steel plate composite floor slab.

Because the steel plate of the bottom mold has no ribs, the truss type floor bearing plate can form a two-way plate by adding a steel bar in one direction, thereby reducing the thickness of the plate and increasing the span; The bottom mold is only used as a template, and there is no need for fireproof coating or later maintenance.

At present, the multi-storey steel structure building floor slab generally adopts the profiled steel plate-concrete composite floor slab with a certain rib height, and this floor slab has the shortcomings such as the total thickness of the floor slab is large, the indoor net height is reduced, the lower surface of the floor slab is uneven, the reinforcement binding is cumbersome, the steel bar spacing and the thickness of the concrete protective layer are difficult to control, the corrosion resistance and fire resistance, and the two-way plate can not be made.

The truss type floor deck plate is the combined template that the steel bar in the floor slab is processed into a steel truss in the factory, and the steel truss is welded into one with the galvanized profiled steel plate, and the previous floor slab construction mode is different, at the construction site, the steel truss template can be laid directly on the steel beam, and then a simple reinforcement work is carried out, the concrete can be poured, and the floor slab construction efficiency is improved.

What are the excellent characteristics of truss floor decks? Let's take a look with the editor.

1. Economical, the truss stress mode is reasonable, the material selection is economical, the comprehensive cost advantage is obvious, can be designed as a two-way slab, adjustable truss height and steel bar diameter are intended to be suitable for large span floor slabs.

2. Convenient, the on-site steel binding workload is reduced by 60%-70%, which can further shorten the construction period, and the truss has a reasonable force mode, which can provide greater floor stiffness, greatly reducing or removing the temporary support for construction.

3. Safety, the mechanical properties are basically the same as the traditional cast-in-place floor slab, the floor slab has good crack resistance, and the truss floor slab is already a widely used building material. Only by understanding its construction process can we reduce the trouble and maximize its advantages.

How to choose a truss floor deck? The following article introduces you to it.

The selection of cold-rolled ribbed steel bars is because of the mechanical occlusion of the agricultural production system between cold-rolled ribbed steel bars and concrete, which significantly improves the bond strength, about cold-rolled ribbed steel bars, because the concrete is embedded between the ribs of the steel bars, so there will be occlusion force, as well as adhesion and friction, but the bonding of ribbed steel bars mainly comes from the excellent mechanical occlusion between the ribs on the surface of the steel bars and the concrete, if the cold-rolled round steel bars are selected, the adhesion between them and the concrete will be worse than the cold-rolled ribbed steel bars, which affects the mechanical function of the floor slab, The choice of truss floor deck determines the quality of the project.