Scour below pipelines and around vertical piles in random waves

Dag Myrhaug*, Haavard Rue

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

An approach by which the scour depth and scour width below a fixed pipeline and scour depth around a circular vertical pile in random waves can be derived is presented. Here, the scour depth formulas by Sumer and Fredsøe [ASCE J. Waterw., Port, Coastal Ocean Eng. 116 (1990) 307] for pipelines and Sumer et al. [ASCE J. Waterw., Port, Coastal Ocean Eng. 114 (1992) 599] for vertical piles as well as the scour width formula by Sumer and Fredsøe [The Mechanics of Scour in the Marine Environment, World Scientific, Singapore, 2002] for pipelines combined with describing the waves as a stationary Gaussian narrow-band random process are used to derive the cumulative distribution functions of the scour depths and width. Comparisons are made between the present approach and random wave scour data. Tentative approaches to related random wave scour cases are also suggested.

Original languageEnglish (US)
Pages (from-to)227-242
Number of pages16
JournalCoastal Engineering
Volume48
Issue number4
DOIs
StatePublished - Jan 1 2003

Keywords

  • Fixed pipeline
  • Random waves
  • Scour depth and width
  • Shear stress
  • Stochastic approach
  • Vertical slender pile

ASJC Scopus subject areas

  • Environmental Engineering
  • Ocean Engineering

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