Evaluation of the Effect of Varying the Angle of Asphaltic Concrete Core on the Behavior of the Meijaran Rockfill Dam

Khalaj, Omid; Ayati Ahmadi, Alireza; Abedin Nejad, Sobhan; Mašek, Bohuslav; Štadler, Ctibor; Skála, Jiří

doi:10.3390/coatings12060720

Open AccessArticle

Evaluation of the Effect of Varying the Angle of Asphaltic Concrete Core on the Behavior of the Meijaran Rockfill Dam

by

Omid Khalaj

¹

,

Alireza Ayati Ahmadi

^2,*

,

Sobhan Abedin Nejad

²,

Bohuslav Mašek

¹,

Ctibor Štadler

¹ and

Jiří Skála

¹

Faculty of Electrical Engineering, University of West Bohemia, Univerzitní 22, 30614 Pilsen, Czech Republic

²

Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran P.O. Box 1983969411, Iran

^*

Author to whom correspondence should be addressed.

Coatings 2022, 12(6), 720; https://doi.org/10.3390/coatings12060720

Submission received: 28 April 2022 / Revised: 15 May 2022 / Accepted: 20 May 2022 / Published: 24 May 2022

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Abstract

The use of asphaltic concrete cores for sealing embankments and rockfill dams is very important. The self-healing properties of bitumen, simple construction in cold and rainy conditions compared to clay cores, good flexibility and connection with embankment materials are the essential characteristics of asphaltic concrete. The main concern regarding the use of asphaltic concrete cores in Iran is mainly the performance of these dams under seismic loads. The evaluations of the performance of these types of dams in other countries show that asphaltic concrete cores perform satisfactorily in the static state, but in earthquake conditions, the situation may be different. In this paper, the static and seismic behavior of the Meijaran dam in Iran, Mazandaran, is evaluated for three core angles of 90°, 60° and 45°. This evaluation was conducted at the end of the impounding stage and after applying seismic loads using FLAC 2D software and Mohr–Coulomb consitutive models. The results were matched with the ICOLD recommendation to use angled cores in dams with asphaltic cores and showed that the dam performs better with angled cores. Finally, for the Meijaran dam, the results from the dynamic analysis are compared with the results from the centrifuge test.

Keywords: asphaltic concrete core; rockfill dam; static analysis; dynamic analysis; centrifuge test; FLAC 2D; Meijaran dam

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MDPI and ACS Style

Khalaj, O.; Ayati Ahmadi, A.; Abedin Nejad, S.; Mašek, B.; Štadler, C.; Skála, J. Evaluation of the Effect of Varying the Angle of Asphaltic Concrete Core on the Behavior of the Meijaran Rockfill Dam. Coatings 2022, 12, 720. https://doi.org/10.3390/coatings12060720

AMA Style

Khalaj O, Ayati Ahmadi A, Abedin Nejad S, Mašek B, Štadler C, Skála J. Evaluation of the Effect of Varying the Angle of Asphaltic Concrete Core on the Behavior of the Meijaran Rockfill Dam. Coatings. 2022; 12(6):720. https://doi.org/10.3390/coatings12060720

Chicago/Turabian Style

Khalaj, Omid, Alireza Ayati Ahmadi, Sobhan Abedin Nejad, Bohuslav Mašek, Ctibor Štadler, and Jiří Skála. 2022. "Evaluation of the Effect of Varying the Angle of Asphaltic Concrete Core on the Behavior of the Meijaran Rockfill Dam" Coatings 12, no. 6: 720. https://doi.org/10.3390/coatings12060720

APA Style

Khalaj, O., Ayati Ahmadi, A., Abedin Nejad, S., Mašek, B., Štadler, C., & Skála, J. (2022). Evaluation of the Effect of Varying the Angle of Asphaltic Concrete Core on the Behavior of the Meijaran Rockfill Dam. Coatings, 12(6), 720. https://doi.org/10.3390/coatings12060720

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Evaluation of the Effect of Varying the Angle of Asphaltic Concrete Core on the Behavior of the Meijaran Rockfill Dam

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