ADVANTAGES OF BRIDGE DECK CONTINUITY

The advantages of multi-span bridge decks are outlined, and five examples are given to compare several simply supported and continuous designs used in the UK. Multi-span bridge decks are designed to provide continuity across their support piers. The UK Department of Transport (DoT) is currently considering issuing an Advice Note to encourage bridge designers to use deck continuity, especially to minimise the use of trouble-prone deck joints. The main advantages of multi-span deck continuity are: (1) the elimination of deck and parapet joints at the piers; (2) the saving in deck depth; (3) the halving of the number of bearings required at each pier; (4) the replacement of two rows of bearings by a single row of central bearings; (5) the ability to apply the 'sucker deck' principle usefully; (6) the ability to use the transverse strength of the deck over piers; and (7) additional deck redundancy, which reduces the risk of sudden collapse. The optimal construction depth/span ratios vary with span, live loading, materials, and construction methods. For the covering abstract see IRRD 873218.

  • Availability:
  • Corporate Authors:

    E and F Spon Limited

    2-6 Boundary Road
    London,   England 
  • Authors:
    • PRITCHARD, B P
  • Publication Date: 1994

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00713357
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-419-19030-9
  • Files: ITRD
  • Created Date: Nov 22 1995 12:00AM