Preparation method of steel bar truss steel mesh formwork-free floor support plate

The invention discloses a preparation method of a steel bar truss steel mesh formwork-erecting-free floor support plate. The preparation method comprises the following specific steps that firstly, a plurality of pieces of flat steel are arranged at intervals and positioned; secondly, a steel wire mesh is installed on the flat steel, wherein the steel wire mesh is formed by arranging a plurality of first steel wires and a plurality of second steel wires in a transverse and longitudinal mode; thirdly, steel bar trusses are arranged on the steel wire mesh, spot welding is conducted on the steel bar trusses and the flat steel, and the steel wire mesh is clamped by the steel bar trusses and the flat steel; and fourthly, C30 concrete is poured till the thickness of the concrete is 20 mm, so that the truss laminated slab is formed, and steel bars in the steel bar truss can also be used as stress bars of the floor slab. The prepared floor support plate can be used for a steel structure and a concrete structure, and t