Surface Characteristics of Scouring at Bridge Elements

Infrastructural elements of bridges mounted in alluvial stream beds are susceptible to scouring. Decision-making for the type and placement practice of relevant countermeasures to be implemented against scouringaction is based on investigation of the characteristics of scour holes formed around piers and abutments. Thiswould also lead to the estimation of the safe depth of burial of footings of bridge infrastructural elements.Sets of experiments have been performed to investigate time-dependent characteristics of scour holes aroundcylindrical and square piers and vertical-wall abutments under clear water conditions with uniform bedmaterials. In the course of the experiments, temporal variations in scour depth and scour contours weremeasured. Using this information, a number of empirical relations were developed for temporal variationin dimensionless scour surface area and scour hole volume. The findings of this study may provide usefulinformation for the preliminary design of armoring countermeasures around such infrastructural elements.
Turkish Journal of Engineering and Environmental Sciences


Development of a safetyinspection methodology for river bridges
Berk, Aysu; Yanmaz, Ali Melih; Department of Civil Engineering (2006)
River bridges get damaged or even collapse because of various reasons, such as development of adverse hydraulic conditions during severe floods, disastrous earthquakes, deficiencies in structural and geotechnical design, material deficiencies, or other unexpected external factors. Failure of service at vital lifelines, bridges, can lead to loss of several lives and properties, traffic disruption, and/or deficiencies in daily usage. Existing structures should be monitored periodically for decision-making and...
Time-Evolution of Clear Water Scouring at Dual Bridge Piers
Yilmaz, Meriç; Yanmaz, Ali Melih; Köken, Mete (2018-01-01)
Time evolution of the maximum scour depth around piers up to peak value of the design flow is required for safe foundation design of bridges crossing alluvial rivers. This study deals with an experimental work conducted to investigate the surface characteristics of scour-holes around dual piers aligned with the flow direction under clear water conditions with uniform bed material. Experiments are conducted using different sizes of identical cylindrical dual piers for different spacing and flow intensities. ...
Evaluation of scouring reliability at bridge abutments
Yanmaz, Ali Melih (2012-04-26)
Serious scouring may take place around bridge abutments during floods, which can lead to considerable damage or structural collapse. Design of abutment footings must, therefore, rely on the estimation of maximum possible depth of scour through the bridge opening. Deterministic scour-prediction equations are based on simplified assumptions and they do not account for randomness of the scouring variables, which leads to an unavoidable risk in footing design. This study is concerned with the development of a n...
Effects of collars on local scour around semi-circularend bridge abutments
Daşkın, Süeyla; Göğüş, Mustafa; Department of Civil Engineering (2011)
During severe floods, bed material around bridge piers and abutments are scoured by the flow and as a result, bridges are subject to damages. These damages are mostly unrepairable and can result in loss of lives and property. In this thesis study, abutment scour under clear-water condition was investigated and collars were tested as scour countermeasures around the abutments. The experimental study was carried out in a rectangular channel with an almost uniform cohesionless bed material of d50=1.50 mm for a...
Interaction between bridge abutment and piers concerning local scour
Akbulut, Ömer Faruk; Göğüş, Mustafa; Kökpınar, Mehmet Ali; Department of Civil Engineering (2020-8)
Flowing water usually causes transportation of loose non-cohesive materials, called sediment in literature, in natural open channels such as rivers and canals with a transportable material bed. This sediment transportation is observed in two different situations; deposition and erosion. Excessive erosion leads in scouring. Scouring can be classified in three groups; general, contraction and local scour. Scouring namely removal of bed material from bridge sites cau...
Citation Formats
A. M. Yanmaz, “Surface Characteristics of Scouring at Bridge Elements,” Turkish Journal of Engineering and Environmental Sciences, pp. 127–134, 2007, Accessed: 00, 2021. [Online]. Available: