APPLICATION OF PREFLEX BEAMS TO RAILWAY BRIDGES

APLICACION DE LAS VIGAS PREFLEX A LOS PUENTES DE FERROCARRIL

Among the possible designs for railway bridge, a special type of mixed prestressed beam, already well known and called preflex, is being increasingly used. Its basic principle and fabrication are briefly discussed, and the advantages presented by its utilisation for railway bridges is stressed. Such advantages are of two types; operation and construction. The former concerns the internal stress introduced into the beam during the fabrication process. The advantages with respect to the latter are numerous: the beams are light and easy to handle, their large bearing capacity increases the scope of this type of bridge, construction time is reduced, maintenance is facilitated, and finally noise is reduced as compared to steel bridges. Paper presented to the symposium on prestressed concrete railway bridges at the Eduardo Torroja Institute, Madrid, May 1975.

  • Corporate Authors:

    Instituto Eduardo Torroja

    Costillares, Chamartin
    Madrid 33,   Spain 
  • Authors:
    • Alvarez, C
  • Publication Date: 1976-1-3

Language

  • Spanish

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 59-70
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00182844
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Oct 31 1978 12:00AM