MODERN DEVELOPMENTS IN CONCRETE BRIDGE DESIGN AND CONSTRUCTION

The author examines current developments outside the UK showing that creativity, intuition and engineering skills are still required to supplement computer analysis in good bridge design. Examples are given to show how a clear distinction must be drawn between the requirements of serviceability and safety; the theory of elasticity is best suited to satisfy the first requirement, the theory of plasticity should be used in the second. Partial prestressing can be used in conjunction with reinforced and prestressed concrete to produce a robust and durable structure. Innovative methods recently developed include the incremental launching method, widely used in Germany, giving great savings in labour costs, formwork and scaffolding. However, this method often leads to structures with piers and girders of a clumsy appearance. Free cantilever construction still remains an economical method for spans of between 60 m and 200 m. Its inherent slowness can be overcome by the use of prefabricated segments glued together in situ with epoxy resin. Recent experience shows that cable-staged bridges with concrete towers and decks can be competitive even for large spans up to 500 M. (TRRL)

  • Availability:
  • Corporate Authors:

    Plenum Publishing Corporation

    233 Spring Street
    New York, NY  United States  10013
  • Authors:
    • WALTHER, R
  • Publication Date: 1984-8

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 31-33
  • Serial:
    • CONCRETE
    • Volume: 18
    • Issue Number: 8
    • Publisher: THE CONCRETE SOCIETY
    • ISSN: 0010-5317

Subject/Index Terms

Filing Info

  • Accession Number: 00394575
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jul 31 1985 12:00AM