| 摘要 |
PROBLEM TO BE SOLVED: To improve the earthquake resistance of a split type outer diaphragm in joint structure of a steel pipe column and steel beams having the form of the split type outer diaphragm welded to the steel pipe column. SOLUTION: A vertical pair of split outer diaphragms 22, 22 for jointing four steel beams 3, etc., to a rectangular steel pipe column 1 are respectively divided in four split diaphragms 23, etc., and the respective split diaphragms 23, etc., are extended in a range of about 90 deg. in a circumferential direction including two side faces of the outer periphery of a column face 1a of the rectangular steel pipe column 1 and fillet-welded. A vertical stiffener 30 is inserted in a slit formed between the split face parts of the split diaphragms 23, 23 and fillet-welded to the column face 1a of the steel pipe column 1 and the split diaphragms 23, 23. The end part of a flange part 3b of each steel beam 3 is jointed to the tip parts of the adjacent split diaphragms 23, 23, and a web part 3b of the steel beam 3 is jointed to the end face of the vertical stiffener 30.
|
