INVESTIGATION ON RESIDUAL AXIAL FORCE OF HIGH-STRENGTH BOLTS OF FRICTION GRIP JOINTS IN STEEL BRIDGES UNDER LONG-TERM SERVICE CONDITIONS AND ITS TENDENCY ASSESSMENT.

DOI

Bibliographic Information

Other Title
  • 長期供用中の鋼橋における高力ボルト摩擦継手の残存ボルト軸力測定とその傾向に関する基礎的研究

Abstract

<p>With the aging of civil infrastructures, it is urgent to propose more efficient and simple maintenance and management methods. Higher strength bolts have been known to lose axial force due to relaxation, so that a bolt pre-tension of +10% of the designed axial force was introduced at the time of bolt tightening to compensate for the axial force decrease. Therefore, in this research, focus is placed on high strength bolts under long-term service condition. The residual bolt axial force survey of high strength bolts is carried out on steel bridges after 30 to 50 years of construction in order to know whether the bolt’s axial force remains in design level as required in the design specification.</p>

Journal

  • Kou kouzou rombunshuu

    Kou kouzou rombunshuu 27 (107), 107_9-107_21, 2020-09-25

    Japanese Society of Steel Construction

Keywords

Details 詳細情報について

  • CRID
    1390289920603770752
  • NII Article ID
    130008111168
  • DOI
    10.11273/jssc.27.107_9
  • ISSN
    18840329
    18809928
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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