IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : Scour Morphology around Bridge Abutmentswith Non-Uniform Sediment under Ice Cover
Scour Morphology around Bridge Abutmentswith Non-Uniform Sediment under Ice Cover
Author : Peng Wu, Faye Hirshfield and Jueyi Sui
This paper presents the results from two experimental flume studies on the local scour morphology around semi-circular bridge abutments. The first experiment was conducted in a small-scale open channel flume with artificial non-uniform sedimentThe second experimentwasconducted with a simulated ice cover with natural non-uniform sediment in a large-scale open channel flumeIn open channels, around the semi-circular abutments, both water velocity and sediment grain-size were found to have an influence on the maximum scour depth. It was observed that the scour holesthat developed an armor layer were larger than scour holes that did not develop an armor layer. Under ice covered conditions, the water velocity profileis significantly changed by the boundary condition. The samples from different locations around the abutment under the ice cover in the large scale flume were sieved and analyzed. The scour morphology and scour pattern were compared between small scale flume and large scale flume experiments.
File Size : 694,095 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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