CONNECTION PART AND CONNECTION METHOD FOR COLUMN BEAM

PROBLEM TO BE SOLVED: To improve transmission of a stress between a column and a beam and to improve work efficiency, in a connection part and a connection method between an reinforced concrete column and a steel beam. SOLUTION: A column reinforced assembly wherein column main reinforcements 11 are arranged in a rectangular shape is erected, forms for forming a column surface are arranged at the periphery of the column reinforced assembly. A cross-shaped connection part unit comprises a steel pipe, cross- shaped arrangement steel beams for an end part, a pair of upper and lower reinforcing plates 2 having a concrete filling hole 8 formed in a central part, and a hoop 7 for a unit. Simultaneously with housing of the steel pipe in a column main reinforcement 11, the connection part unit is inserted from above in such a manner that the outer peripheral side of the columnar main bar 11 is covered with the hoop 7 for a unit, the hoop for a unit being supported at the upper end of forms. Forms for forming a connection part are installed at the periphery of a connection part unit, and concrete is placed through the hole 8 and an opening S, and the column and the connection parts are simultaneously molded by using concrete.