A METHOD OF INCREASING ARCH BRIDGE CAPACITY ECONOMICALLY

Bituminous road pavement overlays are proposed as a method of increasing economically the load-carrying capacity of masonry arch bridges. A codified MEXE analysis, a computerized mechanism method, and simple finite-element analysis confirm the increase in arch capacity arising from a pavement overlay. Stress dispersal analyses are used to show the benefits of such overlays. A 0.10 m overlay was shown to increase the arch's load capacity by 61%, for that particular geometry only, while decreasing the vertical stress on the arch by 21%. Cost data are presented for the typical pavement overlays analysed. The use of pavement overlays, where feasible, is shown to be economical while giving beneficial load-carrying capacity increases. The paper is intended to show how the cost of rehabilitating some of those arches currently failing routine assessments in the UK can be reduced. (A)

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 109-15
  • Serial:
    • Volume: 116
    • Issue Number: 1

Subject/Index Terms

Filing Info

  • Accession Number: 00723149
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, ATRI
  • Created Date: Jul 26 1996 12:00AM