Developing empirical formulae for scour depth in front of Inclined bridge piers
Because of the complex flow mechanism around inclined bridge piers, previous studies have proposed different empirical correlations to predict the scouring depth in front of piers, which include regression analysis developed from laboratory measurements. However, because these correlations were deve...
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| Format: | Article |
| Language: | English |
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Croatian Association of Civil Engineers
2023-01-01
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| Series: | Građevinar |
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| Online Access: | https://doi.org/10.14256/JCE.3507.2022 |
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| author | Halil İbrahim Fedakar A. Ersin Dinçer Zafer Bozkuş |
| author_facet | Halil İbrahim Fedakar A. Ersin Dinçer Zafer Bozkuş |
| author_sort | Halil İbrahim Fedakar |
| collection | DOAJ |
| description | Because of the complex flow mechanism around inclined bridge piers, previous studies have proposed different empirical correlations to predict the scouring depth in front of piers, which include regression analysis developed from laboratory measurements. However, because these correlations were developed for particular datasets, a general equation is still required to accurately predict the scour depth in front of inclined bridge piers. The aim of this study is to develop a general equation to predict the local scour depth in front of inclined bridge pier systems using multilayer perceptron (MLP) and radial-basis neural-network (RBNN) techniques. The experimental datasets used in this study were obtained from previous research. The equation for the scour depth of the front pier was developed using five variables. The results of the artificial neural-network (ANN) analyses revealed that the RBNN and MLP models provided more accurate predictions than the previous empirical correlations for the output variables. Accordingly, analytical equations derived from the RBNN and MLP models were proposed to accurately predict the scouring depth in front of inclined bridge piers. Moreover, from the sensitivity analyses results, we determined that the scour depths in front of the front and back piers were primarily influenced by the inclination angle and flow intensity, respectively. |
| format | Article |
| id | doaj-art-47689e4b45a446759d4fef5dc606c437 |
| institution | OA Journals |
| issn | 0350-2465 1333-9095 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Croatian Association of Civil Engineers |
| record_format | Article |
| series | Građevinar |
| spelling | doaj-art-47689e4b45a446759d4fef5dc606c4372025-08-20T01:57:39ZengCroatian Association of Civil EngineersGrađevinar0350-24651333-90952023-01-017503.23925610.14256/JCE.3507.2022Developing empirical formulae for scour depth in front of Inclined bridge piersHalil İbrahim FedakarA. Ersin DinçerZafer BozkuşBecause of the complex flow mechanism around inclined bridge piers, previous studies have proposed different empirical correlations to predict the scouring depth in front of piers, which include regression analysis developed from laboratory measurements. However, because these correlations were developed for particular datasets, a general equation is still required to accurately predict the scour depth in front of inclined bridge piers. The aim of this study is to develop a general equation to predict the local scour depth in front of inclined bridge pier systems using multilayer perceptron (MLP) and radial-basis neural-network (RBNN) techniques. The experimental datasets used in this study were obtained from previous research. The equation for the scour depth of the front pier was developed using five variables. The results of the artificial neural-network (ANN) analyses revealed that the RBNN and MLP models provided more accurate predictions than the previous empirical correlations for the output variables. Accordingly, analytical equations derived from the RBNN and MLP models were proposed to accurately predict the scouring depth in front of inclined bridge piers. Moreover, from the sensitivity analyses results, we determined that the scour depths in front of the front and back piers were primarily influenced by the inclination angle and flow intensity, respectively.https://doi.org/10.14256/JCE.3507.2022pier scourartificial neural networkinclination anglebridge piersmultilayer perceptronradial-basis neural network |
| spellingShingle | Halil İbrahim Fedakar A. Ersin Dinçer Zafer Bozkuş Developing empirical formulae for scour depth in front of Inclined bridge piers Građevinar pier scour artificial neural network inclination angle bridge piers multilayer perceptron radial-basis neural network |
| title | Developing empirical formulae for scour depth in front of Inclined bridge piers |
| title_full | Developing empirical formulae for scour depth in front of Inclined bridge piers |
| title_fullStr | Developing empirical formulae for scour depth in front of Inclined bridge piers |
| title_full_unstemmed | Developing empirical formulae for scour depth in front of Inclined bridge piers |
| title_short | Developing empirical formulae for scour depth in front of Inclined bridge piers |
| title_sort | developing empirical formulae for scour depth in front of inclined bridge piers |
| topic | pier scour artificial neural network inclination angle bridge piers multilayer perceptron radial-basis neural network |
| url | https://doi.org/10.14256/JCE.3507.2022 |
| work_keys_str_mv | AT halilibrahimfedakar developingempiricalformulaeforscourdepthinfrontofinclinedbridgepiers AT aersindincer developingempiricalformulaeforscourdepthinfrontofinclinedbridgepiers AT zaferbozkus developingempiricalformulaeforscourdepthinfrontofinclinedbridgepiers |