Experimental investigation of clear-water local scour at pile groups

B. Ataie-Ashtiani, A. A. Beheshti

Research output: Contribution to journalArticle

143 Citations (Scopus)

Abstract

Experiments of local scour around pile groups are carried out under steady clear-water scour conditions. A variety of conditions including different pile group arrangements, spacing, flow rates, and sediment grain sizes are considered. In total, 112 experiments are carried out. It is observed that the scour-hole depth for some cases of pile groups increases as much as two times more than its magnitude for the case of single piles. The data from this study and some laboratory experiment data from previous works are used to derive a correction factor to predict the maximum local scour depth for the pile groups. Two well-known equations, i.e., Federal Highway Administration, Hydraulic Engineering Circular No. 18, HEC-18 (reported by Richardson and Davis in 2001) and the New Zealand pier scour equation (reported by Melville and Coleman in 2000) are considered. The prediction of scour hole based on the present correction agrees well with the observations.

Original languageEnglish
Pages (from-to)1100-1104
Number of pages5
JournalJournal of Hydraulic Engineering
Volume132
Issue number10
DOIs
Publication statusPublished - 1 Oct 2006
Externally publishedYes

Keywords

  • Bridges
  • Pile groups
  • Rivers
  • Scour

Fingerprint Dive into the research topics of 'Experimental investigation of clear-water local scour at pile groups'. Together they form a unique fingerprint.

  • Cite this