Grounding protection device for constructional engineering

The utility model belongs to the field of constructional engineering, and particularly relates to a grounding protection device for constructional engineering, which comprises a support column. A floor slab is fixedly connected to the surface of the supporting column, a main rib is arranged in the supporting column, the bottom of the main rib is connected with a grounding grid, a pre-buried grounding wire is fixedly installed in the inner wall of the supporting column, and the end, located in the supporting column, of the pre-buried grounding wire is fixedly connected with the main rib. A mounting sleeve is fixedly mounted at the end, away from the main rib, of the pre-buried grounding wire, a limiting column is fixedly mounted on the surface of the mounting sleeve, a fixing sleeve is movably mounted on the surface of the limiting column, and a first spring is fixedly mounted on the surface of the mounting sleeve; therefore, the effect of grounding protection is achieved, it can be guaranteed that each floor