| 摘要 |
PROBLEM TO BE SOLVED: To provide a column base structure of a steel column, capable of reducing tensile strength burdened on an anchor bolt while reducing action of tensile strength to a base plate, thus reducing the number of anchor bolts, reducing a bolt diameter, and lowering a cost of the column base structure further.SOLUTION: In the column base structure for which a steel column 1 is joined to a base concrete 3, a rising bar 7 whose lower part 7a is buried inside the base concrete and upper part 7b is projected from the base concrete is provided around a base plate 2. In order to secure second flexural capacity of a column base part by tensile strength P2 of the rising bar in addition to first flexural strength of the column base part by tensile strength P1 of an anchor bolt 4, an upper part of the rising bar is projected to a height position crossing an assumed stress transmission line L extended at an angle of about 45° upwards from an end edge 2c of a base plate upper surface 2b, and the entire column base part of the steel column is covered with covering concrete 8. |
