Steel support capable of being quickly butted for civil construction

The utility model discloses a fast butt joint steel support for civil construction, which comprises a base plate, pushing components are fixedly arranged on sliding blocks of two groups of first electric sliding tables, one end of each pushing component is inserted on a steel pipe, a first sliding ring is fixedly arranged on each pushing component, a first groove is arranged on the upper surface of the base plate, and a second groove is arranged on the lower surface of the base plate. A first groove is formed in the upper surface of the base plate, a first rotating assembly is fixedly installed in the first groove, a fixing block is fixedly installed on the lower surface of the first rotating assembly, an electric telescopic rod is embedded in the fixing block, one end of the electric telescopic rod is fixedly installed on the first rotating assembly, and a second groove is formed in the upper surface of the base plate; and a second rotating assembly is fixedly mounted in the second groove. The steel support