Abstract
The paper describes results of bearing capacity calculations for railway clayey embankment under new generation gondola cars with 270 kN axle load. Test stretch is situated at the eastern slope of Ural Mountains. The area has average year temperature of 1.7 ℃. Vertical deformations were measured in October 2017–July 2018 for one control section and three test stretches made up with new generation cars and under regular freight trains. It was found that one test stretch had great residual deformations (up to 25 mm). Calculations were performed of critical load and total stresses on the top of the clay layer for summer and spring (period of thawing). For spring, when great deformation occurred, the safety margin was 1.08 times, while the average residual deformation of the subgrade top amounted 11.8 mm. This case study confirms the importance of special track preparations. It was obtained that clayey subgrade had 33% less critical load during the thawing period. It had lead to great deformations under cars with 270 kN axle load.
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Kolos, A., Romanov, A., Shekhtman, E., Akkerman, G., Konon, A., Kiselev, A. (2020). Bearing Capacity of High Embankment Clay Soils in Terms of Heavy Axle Load Operation. In: Petriaev, A., Konon, A. (eds) Transportation Soil Engineering in Cold Regions, Volume 1. Lecture Notes in Civil Engineering, vol 49. Springer, Singapore. https://doi.org/10.1007/978-981-15-0450-1_42
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DOI: https://doi.org/10.1007/978-981-15-0450-1_42
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