Structure for controlling thickness of floor steel bar protective layer

The utility model provides a structure for controlling the thickness of a floor reinforcing steel bar protective layer, belongs to the technical field of building construction, and aims to solve the problems that in the prior art, the using amount of supporting cushion reinforcing steel bar split heads is large, and the thickness of the reinforcing steel bar protective layer is difficult to guarantee due to treading deformation and displacement. The supporting steel bar assembly and the laying steel bar assembly are connected to form the stable steel bar frame to be poured, the supporting steel bar assembly comprises the vertical supporting steel bars, the upper horizontal bars and the lower horizontal bars, and the vertical supporting steel bars are evenly welded to the upper horizontal bars and the lower horizontal bars at intervals. The supporting steel bar assemblies are arranged in the long edge direction of the to-be-poured floor plate at intervals of 500 mm and serve as supporting structures when the t