TENSILE TEST ON HIGH-STRENGTH BOLTED JOINTS OF GFRP PLATES REINFORCED BY EXTERNALLY BONDED STEEL PLATES

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  • ONODERA Ryo
    東京都立大学大学院 都市環境科学研究科 都市基盤環境学域
  • NAKAMURA Hitoshi
    東京都立大学 大学院 都市環境科学研究科 都市基盤環境学域
  • KOBAYASHI Kensuke
    株式会社IHIインフラ建設 橋梁事業部 鋼保全技術部
  • HANAMURA Koichi
    株式会社栗本鐵工所 コンポジットプロジェクト室 技術部
  • NIIKURA Toshiyuki
    パシフィックコンサルタンツ株式会社

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Other Title
  • 鋼板接着で補強されたGFRP板の高力ボルト継手に関する引張試験

Abstract

<p> The joint strength of GFRP plates depends on the bearing strength and shear strength of GFRP materials. Since these strengths are relatively small compared to steel, the joint strength of GFRP plates is also small, which is a structural design issue. Therefore, as a method to improve the joint strength between GFRP and steel plates, a method of joining GFRP plates reinforced by bonded steel plates with steel splice plates was devised. The number of bolt rows (one or two) was experimentally investigated as a parameter. As a result, it was confirmed that the proposed method is effective and that by bonding steel plates to GFRP plates, it is possible to prevent the prior bearing stress failure in GFRP plates and increase the joint strength. It was also found that the debonding of the adhesive joint between GFRP and steel plates is dominant for the joint strength, and it does not depend on the number of bolt rows.</p>

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