Steel structure self-resetting beam-column combined joint and steel structural part

The utility model belongs to the field of steel structures, and provides a steel structure self-resetting beam-column combined joint and a steel structural part. The steel structure self-resetting beam column combination joint comprises a steel beam, a connecting piece and a supporting piece. The supporting piece is fixed at the bottom of the connecting piece; the steel beam comprises two flanges, a web plate is fixedly connected between the two flanges, each flange is provided with a connecting hole, and first gas springs used for self-resetting are installed between the flanges and the web plate; the connecting piece comprises a connecting column, a second gas spring and a connecting plate, and the second gas spring is arranged in the connecting column; the connecting plates are arranged at the two ends of the connecting column and fixedly connected with the two ends of the second air spring correspondingly. Each connecting plate is provided with through holes which have the same circle center and are distr