BRECON BRIDGE: STEADY START FOR SEGMENTS

Possible reasons for the delays in erecting the superstructure of Britain's third bridge built by the glued segmental system are discussed. Six months delay has already occurred on the structure; only size 3 M long segments of the total of 116 have been erected. Particular attention has been paid to covering half of the 100 factory-made segments which have been stored on site. A long line method was employed to counteract the segments using a special variable, tapering case shutter to produce the internally tapering webs and flange. Corrugated shear keys were cast horizontally on the webs and diagonally on the flanges. Groups of tubular steel-stressing cable ducts in the webs vary in level to accommodate the show curvature of the permanent stressing tendons. Details are given of the erection sequence for the bridge which is supported on balken piles. The 25 tonne box units are added on a balanced-cantilever principle, the centre closing segment will be located between the cantilever ends by being suspended from a temporary steel bridging beam restingon top of adjacent cantilevers. (TRRL)

  • Availability:
  • Corporate Authors:

    IPC Building and Contract Journals Limited

    Surrey House, 1 Throwley Way
    Sutton, Surrey SM1 4QQ,   England 
  • Publication Date: 1980-2-21

Media Info

  • Features: Photos;
  • Pagination: p. 21-23
  • Serial:
    • CONTRACT JOURNAL
    • Volume: 293
    • Issue Number: 5242
    • Publisher: Reed Business Information, Limited
    • ISSN: 0010-7859

Subject/Index Terms

Filing Info

  • Accession Number: 00322486
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Mar 12 1981 12:00AM