A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Maximum Abutment Scour Depth in Cohesive Soils
Most conventional methods to predict the depth of abutment scour were developed with flume test results using cohesionless soils, and those methods have been used to the abutment scour depth prediction in cohesive soils. Generally floodplains where most abutments are located are composed of less erodible soils such as cohesive soils. Therefore those methods usually predict overly conservative scour depths. For the cost effective designs, a series of flume tests were carried out using Porcelain clay. Based on dimensional analysis and the test results, a new method to predict the bridge abutment scour depths is proposed. The new method built on the difference between the local Froude number and the critical Froude number. Because abutment scour occurs only when the local velocity is higher than the critical velocity which is the maximum velocity the channel bed material can withstand.
Maximum Abutment Scour Depth in Cohesive Soils
Most conventional methods to predict the depth of abutment scour were developed with flume test results using cohesionless soils, and those methods have been used to the abutment scour depth prediction in cohesive soils. Generally floodplains where most abutments are located are composed of less erodible soils such as cohesive soils. Therefore those methods usually predict overly conservative scour depths. For the cost effective designs, a series of flume tests were carried out using Porcelain clay. Based on dimensional analysis and the test results, a new method to predict the bridge abutment scour depths is proposed. The new method built on the difference between the local Froude number and the critical Froude number. Because abutment scour occurs only when the local velocity is higher than the critical velocity which is the maximum velocity the channel bed material can withstand.
Maximum Abutment Scour Depth in Cohesive Soils
Oh, Seung Jae (author) / Briaud, Jean-Louis (author) / Chang, Kuang-An (author) / Chen, Hamn-Ching (author)
International Conference on Scour and Erosion (ICSE-5) 2010 ; 2010 ; San Francisco, California, United States
Scour and Erosion ; 132-141
2010-10-29
Conference paper
Electronic Resource
English
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