The design and construction of a new 61 M long single-span two-pinsed portal arch structured bridge sited 100 M downstream from the existing masonry arch bridge at Maidstone is described. The bridge is to form part of a new gyratory traffic system to improve flows between the town and the trunk road and motorway network. Temporary supporting steelwork was attached to each concrete portal leg with groups of piled supports located in the river bed at third points of the span. Groups of four tubular steel piles were driven 11 to 19 M into the river bed from the centre line of the bridge. Outriggers are supported on groups of three piles beyond the sides of the bridge with temporary universal beam crossheads on the two transverse lines of piles. Because shrinkage and creep are likely to influence deflections and stresses both during and after post-tensioning, flat jacks were incorporated at the tops of the temporary river supports to ease adjustments. The deck is fully instrumented with strain gauges and thermocouples. Three pedestrian subways and 475 M of retaining walls form part of the contract. /TRRL/

  • Availability:
  • Corporate Authors:

    IPC Building and Contract Journals Limited

    Surrey House, 1 Throwley Way
    Sutton, Surrey SM1 4QQ,   England 
  • Authors:
    • Atkinson, I
  • Publication Date: 1978-5-11

Media Info

  • Features: Photos;
  • Pagination: p. 32-33
  • Serial:
    • Volume: 283
    • Issue Number: 5149
    • Publisher: Reed Business Information, Limited
    • ISSN: 0010-7859

Subject/Index Terms

Filing Info

  • Accession Number: 00184510
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Feb 3 1979 12:00AM