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Spur Dikes as an Abutment Scour Countermeasure
Experiments using spur dikes as a countermeasure to local scour at wingwall abutments were made in a laboratory flume channel. Flow velocity ratios of 0.9, 1.5 and 2.3 times the incipient motion of the bed material sediment were used in a compound channel with a model abutment. The bed material was sand with a median diameter of 0.8 mm and a standard deviation of 1.37. A series of configurations of spur dikes with varying lengths, spacings, number, and positions with respect to the abutment were tested. The most effective configuration to prevent local scour at the abutments consisted of three spur dikes composed of rock located upstream of the abutment and at the two corners.
Spur Dikes as an Abutment Scour Countermeasure
Experiments using spur dikes as a countermeasure to local scour at wingwall abutments were made in a laboratory flume channel. Flow velocity ratios of 0.9, 1.5 and 2.3 times the incipient motion of the bed material sediment were used in a compound channel with a model abutment. The bed material was sand with a median diameter of 0.8 mm and a standard deviation of 1.37. A series of configurations of spur dikes with varying lengths, spacings, number, and positions with respect to the abutment were tested. The most effective configuration to prevent local scour at the abutments consisted of three spur dikes composed of rock located upstream of the abutment and at the two corners.
Spur Dikes as an Abutment Scour Countermeasure
Li, Hua (author) / Kuhnle, Roger (author) / Barkdoll, Brian D. (author)
World Water and Environmental Resources Congress 2005 ; 2005 ; Anchorage, Alaska, United States
2005-07-01
Conference paper
Electronic Resource
English
Hydraulics , Measurement , Hydrology , Wastewater management , Levees and dikes , International factors , Water distribution systems , Groundwater management , Wetlands , Water resources , Water management , Water supply , Watersheds , Stormwater management , Bridge abutments , Scour , Irrigation , Climate change
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