抄録
This paper consists of series of three reports, all concerning with the title. This report is the first one. Two types of full scale specimens were used to examive stress distribution and deformation of panel zone and local buckling of the compresive column. First, the experimental results, refersing to estimates obtained by approximate calculation, were informed. Second, some theory on the stress distribution and deformation of panel-zone was detailed. Then the stiffness reduction of skeleton, caused by deformation of panel-zone, was estimated. The local buckling of compressive box shaped column around the connection was also discussed.
