Predicting scour depth around non-uniformly spaced pile groups

Howard, S. and Etemad-Shahidi, A. (2014). Predicting scour depth around non-uniformly spaced pile groups. In: Hubert Chanson and Luke Toombes, Hydraulic structures and society - Engineering challenges and extremes. 5th IAHR International Symposium on Hydraulic Structures, Brisbane, Australia, (1-6). 25-27 June 2014. doi:10.14264/uql.2014.38

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Author Howard, S.
Etemad-Shahidi, A.
Title of paper Predicting scour depth around non-uniformly spaced pile groups
Conference name 5th IAHR International Symposium on Hydraulic Structures
Conference location Brisbane, Australia
Conference dates 25-27 June 2014
Proceedings title Hydraulic structures and society - Engineering challenges and extremes
Journal name ISHS 2014 - Hydraulic Structures and Society - Engineering Challenges and Extremes: Proceedings of the 5th IAHR International Symposium on Hydraulic Structures
Place of Publication Brisbane, Australia
Publisher The University of Queensland
Publication Year 2014
Year available 2014
Sub-type Fully published paper
DOI 10.14264/uql.2014.38
Open Access Status DOI
ISBN 9781742721156
Editor Hubert Chanson
Luke Toombes
Start page 1
End page 6
Total pages 6
Language eng
Abstract/Summary Pile scour may cause instability to the structures they support. Ensuring a safe and economically sound design is essential for the wider community. Although much laboratory research has been carried out on scour at pile groups, there are still significant gaps in prediction formulae. This study has been conducted to develop a formula for scour at pile arrangements of non-uniform spacing. The study was based on a laboratory experiment found in the literature. Previous empirical formulae for uniformly spaced pile groups were first used to gauge an idea of their performance. The formula that predicted the scour depth more accurately was then modified. The approach of Ghaemi et al. (2013) outperformed the other trialled empirical formulas. Using this formula, a correction factor was suggested to increase the prediction accuracy. The gap to diameter ratio was also corrected to include the non-uniformity of spacing in two directions.
Keyword Empirical formulae
Current
Scour
Bridges
Piers
Stepped spillway
Complex piers
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Non-UQ

 
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Created: Tue, 13 May 2014, 23:08:25 EST by Anthony Yeates on behalf of Scholarly Communication and Digitisation Service