Calibration of erodibility testing devices for bridge design support

Calibration of erodibility testing devices for bridge design support.
Shan, H.and Wiblishauser, O. and Lin, C. and Shen, J. and Kerenyi, K.
In: ICSE 2016 (8th International Conference on Scour and Erosion), 12-15 September 2016, Oxford, UK. (2016)

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Abstract:In order to promote bridge safety under flood conditions, the U. S. Federal Highway Administration (FHWA) has been developing more reliable bridge scour evaluation methods that take into account bridge site specific flow conditions and stream bed material properties. The FHWA is currently developing two such devices: the Ex-situ Scour Testing Device (ESTD) and the laboratory version of an In-situ Scour Testing Device (Lab-ISTD), both test erodibility of stream bed material under specific flow conditions. To maintain portability and robustness, the Lab-ISTD has evolved into a compact cylindrical device that uses a radial flow pattern towards the center of the device to mobilize the foundation material and carrying it away. In this study the previously calibrated ESTD is used as a reference to characterize the performance of the Lab-ISTD, and therefore establish a calibration procedure that enables the Lab-ISTD to produce necessary parameters for better bridge scour evaluation and foundation design.
Item Type:Conference or Workshop Item (Paper)
Subjects:Coasts > Sediment transport and scour
ID Code:1696
Deposited On:22 Nov 2018 13:11
Last Modified:22 Nov 2018 13:11

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