Hydrological Aspects of Bridge Design: Case Study
Publication: Journal of Irrigation and Drainage Engineering
Volume 121, Issue 6
Abstract
Many bridges are destroyed or fail completely during severe floods. If the cause of the damage is not a structural deficiency, it may be excessive local scour around bridge piers and/or abutments. Although the mechanics of the local scour around these obstacles has been studied extensively, the studies investigating the hydrologic design aspects are limited in the literature. Insufficient hydrologic and hydraulic evaluations may result in uncertainties in bridge design. The optimum return period for a flood hydrograph may be determined through a hydro-economic analysis for bridge design. Lack of relevant hydrologic data, such as precipitation and runoff may lead to difficulties in obtaining the design parameters. Realistic judgment of the hydrologist on the local hydrologic behavior of the project area is then required. In this paper, a case study performed for the hydrologic design of a bridge located in a small basin subject to frequent floods is presented. Scour computations of the bridge have been performed for various combinations of runoff to check the foundation stability.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 121 • Issue 6 • November 1995
Pages: 411 - 418
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Nov 1, 1995
Published in print: Nov 1995
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