STRENGTHENING BRIDGE USING PROPRIETARY GEOTECHNICAL PROCESSES

This paper reports on the stabilisation and strengthening of existing bridge structures, using proprietary geotechnical processes, and presents three English case studies. In 1952, Dr F Lizzi of Fondedile SpA, Italy, evolved the process of installing mini piles through existing structures, to strengthen foundations subject to settlement or required to support additional load. Special techniques were developed, because the piles must be installed with minimal disturbance through existing masonry or concrete foundations or occasionally old timber piles. The methods of installing mini piles and anchors vary from site to site, according to the condition of the structure and the subsoil. When designing schemes, consideration must be given to: (1) the possible continuing support by the original foundation; (2) the transfer of load from the structure to the element, especially if post-tensioned anchors are to be used. Piled underpinning is usually rapid and economical, especially for medium to large bridge structures. Existing foundations are progressively strengthened, enhancing the ground's support. The case studies are: (1) the strengthening of Dorking Arch Bridge, Surrey; (2) the reconstruction of Shepherds Bridge, Knottingley, West Yorkshire; and (3) the reinforcement and modification of two viaduct arches in central Birmingham.

  • Availability:
  • Corporate Authors:

    PALLADIAN PUBLICATIONS LTD

    THE OLD FORGE
    ELSTEAD, SURREY  United Kingdom  GU8 6DD
  • Authors:
    • ATTWOOD, S
  • Publication Date: 1919

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 20-3
  • Serial:
    • CONSTRUCTION REPAIR
    • Volume: 8
    • Issue Number: 1
    • Publisher: PALLADIAN PUBLICATIONS LTD
    • ISSN: 0967-0726

Subject/Index Terms

Filing Info

  • Accession Number: 00665266
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Sep 9 1994 12:00AM