Column/beam joint structure

A column beam joint structure comprising:

• a column having a flange member;
• a beam;
• a base plate including a projection fixedly connected to said beam;
• reinforcing plate means including a strip-shaped reinforcing plate surrounding the outer periphery of said column flange;
• and, bolts joining said connector base plate and said column flange with said reinforcing plate interposed between said base plate and said column flange.

A column beam joint structure comprising:

• a column member having a column flange defining a substantially flat connection surface;
• a beam member;
• a base plate including a projection part, said projection part being connected to said beam;
• reinforcing means including first and second flat plates, each of said flat plates being welded to said substantially flat connection surface to define a gap between said flat plates, said flat plates and said gap defining a split portion running along an axial direction of said column, said base plate being joined to said column flange by bolts, said split portion being sandwiched between said base plate and said substantially flat flange disposed between said bolts.