An investigation of water-flow pressure distribution on bridge piers under flood loading

Nasim, M, Setunge, S, Zhou, S and Mohseni, H 2018, 'An investigation of water-flow pressure distribution on bridge piers under flood loading', Structure and Infrastructure Engineering, vol. 15, no. 2, pp. 219-229.


Document type: Journal Article
Collection: Journal Articles

Title An investigation of water-flow pressure distribution on bridge piers under flood loading
Author(s) Nasim, M
Setunge, S
Zhou, S
Mohseni, H
Year 2018
Journal name Structure and Infrastructure Engineering
Volume number 15
Issue number 2
Start page 219
End page 229
Total pages 11
Publisher Taylor and Francis
Abstract This study simulates the flood effect on piers using a finite volume method in the ANSYS-FLUENT package. The pier is modelled as a non-structural column with a rectangular and a circular cross-section. To simplify the methodology, the pier, as well as the bed and side walls, is assumed to have non-slip boundaries for the fluid domain. A crucial feature of this investigation is the consideration of the effect of water while it is flowing around an object like a bridge pier and the distribution of pressure along the pier height. A numerical model is proposed to explore the influence of variation of velocity on the hydrodynamic force and pressure distribution exerted on piers. A significant finding is that the shape of the pier cross-section has a significant effect on the fluid pressure exerted on bridge piers under flood loading. It is noted that the AS5100 method is appropriate for a conservative estimation of the pressure on rectangular piers, whereas the technique will have a risky safety margin for bridge piers with a circular cross-section and need to be used with caution.
Subject Structural Engineering
Infrastructure Engineering and Asset Management
Keyword(s) Flood loading
Computational fluid dynamics
Finite volume methods
Bridge piers
Shape effect
Hydraulics
Hydrodynamics
Flood hazard
DOI - identifier 10.1080/15732479.2018.1545792
Copyright notice © 2018 Informa UK Limited, trading as Taylor & Francis Group
ISSN 1573-2479
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