TENSION DROP IN CABLE-BAND BOLTS ON SUSPENSION BRIDGES. BRIDGE MANAGEMENT. INSPECTION, MAINTENANCE, ASSESSMENT AND REPAIR. PAPERS PRESENTED AT THE FIRST INTERNATIONAL CONFERENCE ON BRIDGE MANAGEMENT, UNIVERSITY OF SURREY, GUILDFORD, MARCH 28-30, 1990

The tension (axial force) in cable-band bolts on suspension bridges decreases with time. Conventionally bolt tension was measured periodically and bolts were retightened when the measured tension was lower than that specified. The authors undertook a survey of the bolt tension on several suspension bridges and analysed the data. The results indicated that the bolt tension decrease has a certain tendency and, in particular, tension drop decreases markedly after retightening. This paper describes the method of investigation which the authors used to determine the tension in cable-band bolts together with the analysis of the data. In addition, proposals are given on how to determine the optimum bolt tightening time and an appropriate bolt tension value to use as criteria.(A) For the covering abstract of the conference see IRRD 830553.

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  • Corporate Authors:

    Elsevier Science Publishers

    Crown House, Linton Road
    Barking, Essex IG11 8JU,   England 
  • Authors:
    • Kagawa, Y
    • FUKUSHI, A
  • Publication Date: 1990

Language

  • English

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Filing Info

  • Accession Number: 00606679
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 1-85166-456-4
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1991 12:00AM