METHOD FOR DESIGNING HIGH STRENGTH BOLT FRICTION JOINT PART AND HIGH STRENGTH BOLT FRICTION JOINT

PROBLEM TO BE SOLVED: To provide a method for designing a high strength bolt friction joint capable of realizing a rational number of high strength bolts and arrangement of high strength bolts and provide a high strength bolt friction joint designed on the basis of the method.SOLUTION: This invention relates to a high strength bolt frictional joint subjected to a frictional surface treatment where a coefficient of friction is dependent on a contact pressure, and it satisfies a relation of μ=14×10×t+4×10×(l+w-1.35×2×r)+0.24, where l(mm) is a frictional surface length per one high strength bolt in a stress applying direction, w(mm) is a frictional surface length per one high strength bolt in a stress crossing direction, t(mm) is a doubling plate thickness, and μ is a sliding coefficient when relations of l≤1.35×2×rand w≤1.35×2×rare applied. Since a target sliding coefficient μ and ts are set in advance and land wcan be set to cause this sliding coefficient μ and ts to be satisfied, it is possible to attain a high strength bolt frictional joint where a rational high strength bolt can be arranged.SELECTED DRAWING: Figure 1 【課題】合理的な高力ボルト本数、高力ボルト配置ができる高力ボルト摩擦接合部の設計方法およびそれに基づいて設計された高力ボルト摩擦接合部を提供する。【解決手段】摩擦係数が接触圧に依存する摩擦面処理を施した高力ボルト摩擦接合部であって、応力方向の高力ボルト１本当たりの摩擦面長さをｌｂ（ｍｍ）、応力直交方向の高力ボルト１本当たりの摩擦面長さをｗｂ（ｍｍ）、添板厚をｔｓ（ｍｍ）、すべり係数をμとすると、ｌｂ≦１．３５×２×ｒ０、ｗｂ≦１．３５×２×ｒ０の場合に、μ＝１４×１０−３×ｔｓ＋４×１０−３×（ｌｂ＋ｗｂ−１．３５×２×ｒ０）＋０．２４を満たす。そして、予め目標とするすべり係数μおよびｔｓを設定しておき、このすべり係数μとｔｓを満足するように、ｌｂ、ｗｂを設定することができるので、合理的な高力ボルト配置ができる高力ボルト摩擦接合部を得ることができる。【選択図】図１