DOUBLING UP BEATS PILING PROBLEM

This short article describes the problems encountered at the start of the piling operations for the 35.1 metre leven viaduct, where unforseen ground conditions have delayed the opening of the second stage of the A19 and affect the southern branch of the interconnecting parkway. It was found that the 356mm by 378mm "h" section steel piles would need to be driven to double their intended lengths to achieve the specified set. Steel shortage prevented this solution. A second opinion found that the sandstone revealed by the original soil investigation was more readily penetratable by the "h" piles than had been anticipated. Bored tension piles were installed, but a proposal to use triple sections at the bottom of the piles was abandoned. In general it was decided to double the number of piles and down-rate individual bearing capacities. The author includes an account of progress to date. This includes pile driving on the south bank, where rakers are being installed and the use of temporary sheet piling to provide level standing for a crane on the north side. Intermediate 1.83M by 1.22M reinforced concrete piers are being constructed and a copper dam river diversion enables construction of the central piers "in the dry". A jig is being used to accurately assemble crosshead beams. The deck is to be cast in reinforced concrete. /TRRL/

  • Availability:
  • Corporate Authors:

    IPC Building and Contract Journals Limited

    32 Southwark Bridge Road
    London SE1 9EX,   England 
  • Authors:
    • Atkinson, I
  • Publication Date: 1975-5-22

Media Info

  • Features: Photos;
  • Pagination: p. 26-27
  • Serial:
    • CONTRACT JOURNAL
    • Volume: 265
    • Issue Number: 4994
    • Publisher: Reed Business Information, Limited
    • ISSN: 0010-7859

Subject/Index Terms

Filing Info

  • Accession Number: 00127815
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 16 1975 12:00AM