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http://dx.doi.org/10.5762/KAIS.2020.21.1.163

Development of Scour Depth Calculation Equation Based on Hydraulic Model Test Data  

Chang, Hyung-Joon (School of Civil Engineering, Chungbuk National University)
Lee, Ho Jin (School of Civil Engineering, Chungbuk National University)
Lee, Hyo Sang (School of Civil Engineering, Chungbuk National University)
Kim, Sung-Duk (School of Civil Engineering, Chungbuk National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.1, 2020 , pp. 163-168 More about this Journal
Abstract
Since the industrialization in the 1960s, Korea has been expanding its transportation infrastructure, such as building bridges. Owing to bridge construction, studies on stability review have been carried out, and stability-securing technology has been developed. On the other hand, these were applied mainly to the upper part of the bridge, so applications to the lower part are limited. In particular, scour at the bridge pier causes erosion in the riverbed and bridge collapse. Hence, prevention studies and countermeasures are needed. In this study, an empirical formula was developed to evaluate the scour depth of a bridge, which was calculated through multiple linear regression analysis using the hydraulic model study data conducted in previous studies. The formula, which had a value of 0.91, was applied to the model test data that was not used for development to verify the developed formula. When the pier scour depths were compared in 23 cases, the error rate was less than 20% in 16 cases (70%). The empirical formula developed in this study is applicable to pier scour-depth calculations. Further research will be needed to develop a more accurate empirical formula for pier scour-depth calculations, and it is expected to reduce bridge damage caused by scour.
Keywords
Pier Scour Depth; Multiple Regression Analysis; Empirical Formula; Scour; Bridge;
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