Assessment of the Geometric Shape of Bridge Pier on the Scour Depth Using the Support Vector Machine

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Fuladipanah M.; Majediasl M.

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Journal: Journal of Water and Soil Science Year:2021 | Volume:24 | Issue:4 Page(s): 197-210

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Title

Assessment of the Geometric Shape of Bridge Pier on the Scour Depth Using the Support Vector Machine

Author(s)

Fuladipanah M. | Majediasl M. | Issue Writer Certificate

Keywords

Performance assessmentQ2

ScouringQ1

OptimizationQ2

ScouringQ1

Data-based methodQ1

Artificial intelligenceQ1

Abstract

The prediction of local Scouring as a dynamic and nonlinear phenomenon using methods of acceptable predictive capability has always been of interest to researchers. The shape of the bridge pier is one of the important factors in the formation and magnitude of the scour hole. In this paper, the scour depth of three bridge piers with cylindrical, sharp nose and rectangular shapes was predicted in two scenarios using the support vector machine algorithm with 395 field data obtained from the US Geological Survey and Froehlich (1988), based on different combinations of dimensionless parameters as the water attack angle (α ), Froud number (Fr), the ration of pier length to width (l/b), and the ratio of mean sediment size to pier width (D50/b). The results of the study, while confirming the acceptable performance of the SVM algorithm for all piers in both scenarios, showed that in the first and second scenarios, the most optimal performance was related to the rectangular pier shape with correlation coefficient of 0. 8702 and 0. 8838, with and maximum Ds (DDR) values of 0. 854 and 1. 229 respectively, during the testing phase. The positive effect of increasing the number of data on the performance of the SVM algorithm was also confirmed by further probing the evaluation indicators. The results of the comparison pointed out the overestimation of the predicted scour depth values of absolute error between 11% to 35%...

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APA: Copy

Fuladipanah, M., & Majediasl, M.. (2021). Assessment of the Geometric Shape of Bridge Pier on the Scour Depth Using the Support Vector Machine. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 24(4 ), 197-210. SID. https://sid.ir/paper/401626/en

Vancouver: Copy

Fuladipanah M., Majediasl M.. Assessment of the Geometric Shape of Bridge Pier on the Scour Depth Using the Support Vector Machine. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2021;24(4 ):197-210. Available from: https://sid.ir/paper/401626/en

IEEE: Copy

M. Fuladipanah, and M. Majediasl, “Assessment of the Geometric Shape of Bridge Pier on the Scour Depth Using the Support Vector Machine,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 24, no. 4 , pp. 197–210, 2021, [Online]. Available: https://sid.ir/paper/401626/en

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