Investigation techniques of local scour at bridge sites

Most predictive formulae for the estimation of scour at bridge sites have been derived from laboratory experimentation. To date very little field verification of the empirical formulae has been measured. Flood events at bridge sites present an aggressive environment that make it extremely difficult to measure the hydraulic and sediment transport processes taking place. The lack of performance assessment of scour estimation, the perceived conservatism of scour estimates and the general shortage of field scour data has prompted the Hydraulics Section to undertake a long-term programme for the assessment of scour at bridge sites. This paper outlines the scour investigation techniques used to date by the DMR, other scour investigation techniques available for consideration, and briefly outlines new bridge inspection scour assessment procedures that represent a first-step progression of scour assessment from a qualitative to a quantitative assessment in the DMR. (a) For the covering entry of this conference, please see ITRD abstract no. E211649.

  • Authors:
    • MCLEAN, J
  • Publication Date: 2004

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01011283
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Dec 19 2005 2:59PM