Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
To provide a steel pipe joint that does not cause an increase in the production cost, and in which the screw portion is unlikely to come out when receiving tension or bending loads, and that has expected proof stress that is determined from the joint thickness and proof stress that can be applied to the screw thread.SOLUTION: A steel pile joint 1 according to the present invention is one that is attached to the ends of steel pipes 3 and joins the steel pipes 3. The steel pile joint 1 includes a male cylindrical body 5 that has a male screw with a parallel screw, and a female cylindrical body 7 that has a female screw with a parallel screw. The coefficient of friction when load surfaces 9a, 11a for screw thread 9, 11 of the male screw and female screw contact each other is larger than that at the time when stabbing surfaces 9b, 11b for the screw thread 9, 11 of the male screw and female screw contact each other.SELECTED DRAWING: Figure 1
【課題】生産コストが大きく上昇することなく、引張荷重や曲げ荷重を受けた際にねじ部が外れにくく、継手の板厚とねじ山の伝達可能な耐力から決定される想定耐力を有する鋼管の接合継手を得る。【解決手段】本発明に係る鋼管の接合継手１は、鋼管３の端部に取り付けられて鋼管３同士を接合するものであって、平行ねじからなる雄ねじを有する雄側筒体５と、平行ねじで雌ねじを有する雌側筒体７とを有し、前記雄ねじと前記雌ねじにおけるねじ山９、１１のロード面９ａ、１１ａ同士が接触したときの摩擦係数が、前記雄ねじと前記雌ねじにおけるねじ山９、１１のスタビング面９ｂ、１１ｂ同士が接触したときの摩擦係数よりも大きくなっていることを特徴とするものである。【選択図】 図１
To provide a steel pipe joint that does not cause an increase in the production cost, and in which the screw portion is unlikely to come out when receiving tension or bending loads, and that has expected proof stress that is determined from the joint thickness and proof stress that can be applied to the screw thread.SOLUTION: A steel pile joint 1 according to the present invention is one that is attached to the ends of steel pipes 3 and joins the steel pipes 3. The steel pile joint 1 includes a male cylindrical body 5 that has a male screw with a parallel screw, and a female cylindrical body 7 that has a female screw with a parallel screw. The coefficient of friction when load surfaces 9a, 11a for screw thread 9, 11 of the male screw and female screw contact each other is larger than that at the time when stabbing surfaces 9b, 11b for the screw thread 9, 11 of the male screw and female screw contact each other.SELECTED DRAWING: Figure 1
【課題】生産コストが大きく上昇することなく、引張荷重や曲げ荷重を受けた際にねじ部が外れにくく、継手の板厚とねじ山の伝達可能な耐力から決定される想定耐力を有する鋼管の接合継手を得る。【解決手段】本発明に係る鋼管の接合継手１は、鋼管３の端部に取り付けられて鋼管３同士を接合するものであって、平行ねじからなる雄ねじを有する雄側筒体５と、平行ねじで雌ねじを有する雌側筒体７とを有し、前記雄ねじと前記雌ねじにおけるねじ山９、１１のロード面９ａ、１１ａ同士が接触したときの摩擦係数が、前記雄ねじと前記雌ねじにおけるねじ山９、１１のスタビング面９ｂ、１１ｂ同士が接触したときの摩擦係数よりも大きくなっていることを特徴とするものである。【選択図】 図１