La Trobe
1138078_Assar,K_2021.pdf (602.36 kB)

Empirical analysis of backwater level due to skewed bridge constriction

Download (602.36 kB)
journal contribution
posted on 13.05.2021, 23:30 by Kimia Haji Amou Assar, Serter Atabay, Abdullah YilmazAbdullah Yilmaz, Kazi Parvez Fattah
A simple empirical method is proposed for computing the backwater level for different bridge shapes and crossings in compound channels. A series of parametric studies was conducted on the influence of the Froude number, opening ratio, discharge and roughness coefficient on the backwater depth. The results of the parametric studies, along with multiple regression analysis, were used to derive a simple accurate mathematical model for computing backwater depth. The proposed method was first compared with the energy method for different skew angles and roughness cases. Comparison of the results of the proposed method and the energy method showed good correlations. The proposed method was also validated by comparing its results with experimental data for normal and skewed crossings at 30° and 45°. The overall absolute average percentage difference between the proposed method and the experimental data was found to be 5.1%, while the overall root mean square error was found to be 0.008.

Funding

The work in this paper was supported, in part, by the Open Access Program of the American University of Sharjah. This paper represents the opinions of the authors and does not represent the position or opinions of the American University of Sharjah.

History

Publication Date

01/02/2021

Journal

Proceedings of the Institution of Civil Engineers: Water Management

Volume

174

Issue

1

Pagination

9pp. (p.42-50)

Publisher

Thomas Telford Services Ltd

ISSN

1741-7589

Rights Statement

The Author reserves all moral rights over the deposited text and must be credited if any re-use occurs. Documents deposited in OPAL are the Open Access versions of outputs published elsewhere. Changes resulting from the publishing process may therefore not be reflected in this document. The final published version may be obtained via the publisher’s DOI. Please note that additional copyright and access restrictions may apply to the published version.