Grounding flat iron seam passing device suitable for expansion joint and settlement joint

The invention provides a grounding flat iron seam crossing device suitable for an expansion joint and a settlement joint, and relates to the technical field of grounding flat iron seam crossing devices, the grounding flat iron seam crossing device comprises concrete, the top of the concrete is provided with two steel pipes, a sealing layer is arranged between one sides of the two steel pipes, and flat iron is arranged between one sides of the two steel pipes; and an expansion joint is arranged at the top of the concrete. According to the invention, when the flat iron is mainly used for preventing a structural joint of a building from settling or displacing, the grounding flat iron can realize free stretching, so that the grounding flat iron cannot be snapped to cause damage to a grounding grid in the area, and the effect of the steel pipe and the sealing layer is mainly used for ensuring that the grounding flat iron is fixedly poured by the expansion joint during concrete pouring of the building; the device i