Design Method for Local Scour at Bridge Piers

A design method for the estimation of equilibrium depths of local scour at bridge piers is presented. The method is based upon envelope curves drawn to experimental data derived mostly from laboratory experiments. The laboratory data include wide variations in flow velocity and depth, sediment size...

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Published in:Journal of hydraulic engineering (New York, N.Y.) N.Y.), 1988-10, Vol.114 (10), p.1210-1226
Main Authors: Melville, B. W, Sutherland, A. J
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Exact sciences and technology
Hydraulic constructions
River flow control. Flood control
TECHNICAL PAPERS
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cited_by cdi_FETCH-LOGICAL-a469t-b4066b7f4e4b98eddc48c0c50a992a3afb8784e64598e9ef028959d9d3e2a08d3
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container_title Journal of hydraulic engineering (New York, N.Y.)
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creator Melville, B. W
Sutherland, A. J
description A design method for the estimation of equilibrium depths of local scour at bridge piers is presented. The method is based upon envelope curves drawn to experimental data derived mostly from laboratory experiments. The laboratory data include wide variations in flow velocity and depth, sediment size and gradation, and pier size, shape, and alignment. Local scour depth estimation is based upon the largest possible scour depth that can occur at a cylindrical pier, which is 2.4D, where D=thepierdiameter. According to the method, this depth is reduced using multiplying factors where clear-water scour conditions exist, the flow depth is relatively shallow, and the sediment size is relatively coarse. In the case of nonrectangular piers, additional multiplying factors to account for pier shape and alignment are applied. The method of estimation of local scour depth is summarized in a flow chart.
doi_str_mv 10.1061/(ASCE)0733-9429(1988)114:10(1210)
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1943-7900
language eng
recordid cdi_proquest_miscellaneous_24864302
source ASCE Library (civil engineering)
subjects Applied sciences
Buildings. Public works
Exact sciences and technology
Hydraulic constructions
River flow control. Flood control
TECHNICAL PAPERS
title Design Method for Local Scour at Bridge Piers
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