EXPOSED COLUMN BASE STRUCTURE OF STEEL COLUMN AND METHOD FOR CONSTRUCTION OF THE SAME

PROBLEM TO BE SOLVED: To provide an exposed column base structure of a steel column and a construction method thereof capable of fixing a column base part to a foundation through a base plate using no anchor bolt or no level mortar for the steel column having a hollow cylindrical shape.SOLUTION: An exposed column base structure of a steel column comprises: a hollow cylindrical steel pipe column 1; a base plate 2 whose upper surface 2a is joined to the lower end of the column base of the steel pipe column; a plurality of headed studs 3 whose shaft parts 3a are jointed with their head parts 3b directed downward, which are joined on the undersurface 2b of the base plate so as to be closer to the center of the base plate than positions of inner peripheral surfaces 1b of the column base part; and a reinforced concrete foundation 4 in which these headed studs are buried and a height of a top end X of the foundation concrete C is configured to coincide with that of the undersurface of the base plate.SELECTED DRAWING: Figure 1 【課題】中空筒体状の鉄骨柱を対象として、アンカーボルトやレベルモルタルを用いることなく、ベースプレートを介して柱脚部を基礎に接合して固定することを可能な鉄骨柱の露出型柱脚構造及びその施工方法を提供する。【解決手段】中空筒体状の鋼管柱１と、鋼管柱の柱脚部下端にその上面２ａが接合されたベースプレート２と、ベースプレートの下面２ｂに、柱脚部の内周面１ｂ位置よりもその中央に寄せて配列して、かつそれらの頭部３ｂを下方に向けて、それらの軸部３ａが接合された複数の頭付きスタッド３と、これら頭付きスタッドを埋設して、基礎コンクリートＣの天端Ｘがベースプレートの下面に接する高さで構築された鉄筋コンクリート製基礎４とを備える構造とする。【選択図】図１