COLUMN STEEL FRAME SUPPORTING STRUCTURE

摘要

PROBLEM TO BE SOLVED: To prevent concrete from undergoing bearing fracture without damaging the degree of freedom in arrangement of column leg base and beautiful appearance. SOLUTION: A wide width section 1b having a width larger than that of an upper section 1a of a column leg base concrete 1 is formed in a lower part of the column leg base concrete 1, the bottom end of an anchor bolt 2 is embedded to the wide width section 1b and a fixing board 4a resisting agaist pulling-out of the bolt 2 is installed on the bottom end. The position of placing the fixing board 4a is set to make the acting direction D of a stress extending conically upward from the fixing board 4a as a starting point pass through a side face of the side faces of the wide width section 1b which side face is most proximate to the bolt 2, and the size of the wide width section 1b is set to suppress the bearing fracture of the concrete at the position where the fixing board 4a is placed. By making the wide width section restrain the concrete from undergoing bearing fracture at the fixing section, the upper section 1a of the column leg base concrete can be formed in a slim shape. The concrete is prevented from undergoing bearing fracture without damaging the degree of freedom in arrangement of the column leg base and beautiful appearance. COPYRIGHT: (C)2006,JPO&NCIPI