Evaluation for slip resistance of pretensioned bolted joints with different contact faces inserted friction sims

DOI
  • Kawamura Ryuta
    横浜国立大学 都市科学部都市基盤学科
  • He Chang
    横浜国立大学 大学院都市イノベーション学府博士課程後期
  • Tamura Hiroshi
    横浜国立大学 大学院都市イノベーション研究院

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Other Title
  • フリクションシムを挿入した異種接合面高力ボルト継手の荷重伝達性能評価

Description

<p>In frictional pretensioned bolted joints, the same specification is employed for contact faces in one joint in principle. Meanwhile, usage of different contact faces including the easy-processing faces might often provide labor-saving and accelerated works. However, in present study, slip coefficient in bolted joints using faces processed by grinder depends on the roughness of contact faces.</p><p>In this study, bolted joints including painted face with inorganic zinc rich paint and face processed by grinder using friction sims were made. Friction sims usually are used in drive unit for increasing the friction. And 21 bolted joint specimens were used in bolt pretention relaxation test and slip test. Finally, based on the results, the suitable slip coefficient in design is discussed.</p>

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