BRIDGE CONSTRUCTION BY EXTRUSION SLIDING

This article describes a method of concrete bridge construction known as extrusion sliding. Briefly, the method involves constructing segments of complete cross-sections, each approximately 30 M long, in a fixed location immediately behind one abutment. As each segment is completed, it is pushed out over the permanent piers a sufficient distance to allow the following completed segment to be attached, and the cycle repeated. The article describes this method as used in the construction of the Brohltal bridge across the river Rhine. The segments in this case were 25 M long and weighed approximately 26 tonnes/m. The sliding was accomplished using polished stainless steel sheets and teflon coated pads, lubricated by soft soap on each pier and the far abutment. The sliding force was applied by horizontal jacks pushing a neoprene friction bearing, supporting the bridge structure, over an oil lubricated block. A relatively light, steel plate girder nose was fixed to the front of the first segment to reduce cantilever moments during sliding, and two temporary, movable, piers were erected at mid span for additional support. The article concludes by listing the advantages and disadvantages of the method and gives some potential applications. /TRRL/

  • Availability:
  • Corporate Authors:

    Cement and Concrete Association

    52 Grosvenor Gardens
    London SW1W 0AQ,   England 
  • Authors:
    • Korn, H
  • Publication Date: 1975-5

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 16-21
  • Serial:
    • CONCRETE
    • Volume: 9
    • Issue Number: 5
    • Publisher: THE CONCRETE SOCIETY
    • ISSN: 0010-5317

Subject/Index Terms

Filing Info

  • Accession Number: 00129985
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 7 1976 12:00AM