STEEL PIPE COLUMN AND CONVEX MEMBER FOR WELDING JOINT OF STEEL PIPE COLUMN

To provide a steel pipe column and a convex member for welding joint of the steel pipe column, with which a supporting plate may be welding-jointed to an end section of a steel pipe without using a backing metal, and rigidity and bearing strength of column head and column leg may be easily enhanced.SOLUTION: It is constructed by a steel pipe 1 and supporting plates 2 formed to have a diameter larger than the diameter of the steel pipe 1 and arranged at both upper and lower ends of the steel pipe 1. A plate or columnar welding projection 3 is provided on inside of the supporting plates 2 so as to contact to an end inner circumference of the steel pipe 1. Weld beads 5 are formed between the end of the steel pipe 1 and the support plates 2 so that the end of the steel pipe 1, the support plate 2 and the welding projection 3 are integrated. The weld beads 5 are formed successively in the circumferential direction of the steel pipe 1. The support plate 2 is formed from a support bearing.SELECTED DRAWING: Figure 1 【課題】鋼管の端部に裏当て金を用いないで支圧板を溶接接合することができ、かつ柱頭および柱脚部の剛性と支圧強度を容易に高めることのできる鋼管柱および鋼管柱の溶接接合用凸型部材を提供する。【解決手段】鋼管１と鋼管１の径より大きい径に形成され、かつ鋼管１の上下両端部に設置された支圧板２とから構成する。支圧板２の内側に鋼管１の端部内周に内接する板状または柱状の溶接接合用凸部３を設置する。鋼管１の端部と支圧板２との間に鋼管１の端部と支圧板２と溶接接合用凸部３とが一体をなすように溶接ビード５を形成する。溶接ビード５は鋼管１の周方向に連続して形成する。支圧板２は支承板から形成する。【選択図】図１