Influence of Bridge Piers on Velocity under Unsteady Flows

Gökçen Bombar

doi:10.38088/jise.1078914

EN

Influence of Bridge Piers on Velocity under Unsteady Flows

Abstract

It is reported that every year hundreds of bridges collapse due to the dynamic forces acting on the piers, particularly during floods and the scour around the foundations. Since the determination of the velocity distribution upstream of the pier is directly related to this force, it is important to predict the effect of a presence and diameter of a bridge pier on velocity and turbulence parameters. In this study, the time variation of point velocities in the stream-wise and vertical direction at a point upstream of a bridge pier was obtained under clear-water and unsteady flow conditions. The presence of the bridge pier causes the velocity profile to be steeper. The increase in pier diameter decreased the maximum stream-wise velocity whereas it increased the vertical velocity in the down flow direction particularly near the bed. The turbulence intensity in stream-wise direction increases in the rising limb and decreases in the falling limb, more prominently near the bottom. The maximum percent reductions in the stream-wise velocities at peak flow were calculated as 6% and 11% for the small and big piers, respectively. The reduction in stream-wise velocity at peak flow increases with depth especially for the pier with greater diameter

Keywords

Supporting Institution

yoktur

Project Number

yoktur

Thanks

The author would like to express her gratitude to Prof. Dr. Şebnem ELÇİ for supplying the ultrasonic velocity meter used during the execution of the experiments.

References

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Details

Primary Language

English

Subjects

Engineering

Journal Section

Research Article

Authors

Gökçen Bombar ^*
0000-0002-8156-6908
Türkiye

Publication Date

December 31, 2022

Submission Date

February 25, 2022

Acceptance Date

August 24, 2022

Published in Issue

Year 2022 Volume: 6 Number: 2

DOI

https://doi.org/10.38088/jise.1078914

IZ

https://izlik.org/JA49FT78SF

Cite

RIS / Bibtex

APA

Bombar, G. (2022). Influence of Bridge Piers on Velocity under Unsteady Flows. Journal of Innovative Science and Engineering, 6(2), 279-296. https://doi.org/10.38088/jise.1078914

AMA

1.Bombar G. Influence of Bridge Piers on Velocity under Unsteady Flows. JISE. 2022;6(2):279-296. doi:10.38088/jise.1078914

Chicago

Bombar, Gökçen. 2022. “Influence of Bridge Piers on Velocity under Unsteady Flows”. Journal of Innovative Science and Engineering 6 (2): 279-96. https://doi.org/10.38088/jise.1078914.

EndNote

Bombar G (December 1, 2022) Influence of Bridge Piers on Velocity under Unsteady Flows. Journal of Innovative Science and Engineering 6 2 279–296.

IEEE

[1]G. Bombar, “Influence of Bridge Piers on Velocity under Unsteady Flows”, JISE, vol. 6, no. 2, pp. 279–296, Dec. 2022, doi: 10.38088/jise.1078914.

ISNAD

Bombar, Gökçen. “Influence of Bridge Piers on Velocity under Unsteady Flows”. Journal of Innovative Science and Engineering 6/2 (December 1, 2022): 279-296. https://doi.org/10.38088/jise.1078914.

JAMA

1.Bombar G. Influence of Bridge Piers on Velocity under Unsteady Flows. JISE. 2022;6:279–296.

MLA

Bombar, Gökçen. “Influence of Bridge Piers on Velocity under Unsteady Flows”. Journal of Innovative Science and Engineering, vol. 6, no. 2, Dec. 2022, pp. 279-96, doi:10.38088/jise.1078914.

Vancouver

1.Gökçen Bombar. Influence of Bridge Piers on Velocity under Unsteady Flows. JISE. 2022 Dec. 1;6(2):279-96. doi:10.38088/jise.1078914

Öz

Influence of Bridge Piers on Velocity under Unsteady Flows

Abstract

Keywords

Supporting Institution

Project Number

Thanks

References

Details

Primary Language

Subjects

Journal Section

Authors

Publication Date

Submission Date

Acceptance Date

Published in Issue

DOI

IZ

Cite