THE USE OF CONTINUOUS PRECAST BEAM DECKS FOR THE M11 WOODFORD INTERCHANGE VIADUCTS

The paper describes how various factors peculiar to the site together with a desire to impose maximum design and construction standardization led to the use of precast mot/c & ca prestressed concrete M beams for the decks of a large multi-viaduct interchange at the London end of the M11 motorway. Elaborated upon is the design and testing of a special in situ concrete pier crosshead connection developed to overcome the problems of establishing deck continuity, the variables imposed by the horizontal and vertical curvatures in the essentially standard deck spans and the closure of the gap between the longest M beam available and the greater length optimum span. Also considered are some of the problems associated with setting up pretensioning beds adjacent to the site to cast and stress over 500 large beams using a previously untried method of strand deflection. /Author/ /TRRL/

  • Availability:
  • Corporate Authors:

    Institution of Structural Engineers

    11 Upper Belgrave Street
    London,   United Kingdom  SW1X 8BH
  • Authors:
    • PRITCHARD, B P
  • Publication Date: 1976-10

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 377-382
  • Serial:
    • Structural Engineer
    • Volume: 54
    • Issue Number: 10
    • Publisher: Institution of Structural Engineers
    • ISSN: 1466-5123

Subject/Index Terms

Filing Info

  • Accession Number: 00145348
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 13 1977 12:00AM