In view of the present day's more exacting requirements for bridge bearings, and recent research into the use of elastomers and PTFE sliding surfaces, this article examines the requirements of bridge bearings in withstanding loadings and accommodating movements. The effect of their efficiency on expansion joints in bridge decks is noted. The importance of bridge movements due to temperature changes is considered together with methods which have been developed for temperature determination. Descriptions are included of four types of bridge bearing commonly used i.e. elastomeric, PFTE sliding, metal and pot bearings. Reference is made to a new code of practice for bearings to be published as a part of a British standard specification. The results of recent research at TRRL into the effects of compressive and shear forces on four types of elastomeric bearings are presented. Details are given in the text and graphically of an investigation into the influence of various parameters, particularly lubrication and temperature, on the behaviour of PTFE sliding bearings. Increased inspection of bearings and the use of special equipment is considered. (TRRL)

  • Availability:
  • Corporate Authors:

    Embankment Press Limited

    Building 59, GEC Estate, East Lane
    Wembley, Middlesex HA9 7TQ,   England 
  • Authors:
    • LOE, J A
  • Publication Date: 1980-10

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 14
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00330813
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Aug 15 1981 12:00AM