Joint of steel box column and steel beam

PURPOSE: A joint structure of a prefabricated steel tube box column and a steel beam is provided to enable the simple installation of a penetration diaphragm when a prefabricated steel tube box column is manufactured. CONSTITUTION: A joint structure of a prefabricated steel tube box column and a steel beam comprises a prefabricated steel tube box column(100), a penetration bracket, a closing plate, and a steel beam(200). The prefabricated steel tube box column is formed by continuously arranging L-shaped bent steel plates(110) and I-shaped bent steel plates(120). A box-shaped opening is formed by the L-shaped and I-shaped bent steel plates. The penetration bracket is inserted into the prefabricated steel tube box column, and the end of the penetration bracket is exposed to the outside through the box-shaped opening. The closing plate is welded to the prefabricated steel tube box column to close the box-shaped opening. The steel beam is welded to the exposed end of the penetration bracket.