Connection structure of column and beam and method for connecting column and beam

A method for connecting a column and a beam using outer diaphragms and a beam of which an end face is connected with an end plate in advance, the method comprising:

• forming female screws on the outer diaphragms in a direction so as to be put between the first end plate and the column;
• making the height of the end plate taller than the height of the beam and both end parts of the end plate project upward and downward from both flange faces of the beam, and forming bolt holes on the projecting parts of the end plate at positions that correspond to the female screws on the outer diaphragms;
• connecting the outer diaphragms to different vertical heights of outer faces of the column relative to one another;
• inserting bolts into the bolt holes and the female screws in a direction parallel to a longitudinal direction of the beam to connect the end plate and the outer diaphragms;
• dividing the outer diaphragm into a plurality of sections in a perimeter direction, each of which is provided in a bending shape;
• and
• connecting each of the divided sections of the outer diaphragms to at least two outer faces of the column.