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DOI: 10.15862/09SATS125 (https://doi.org/10.15862/09SATS125)

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Poliakov V.Yu., Demidov I.M. Interaction of submerged floating tunnels and various types of rolling stock. Russian Journal of Transport Engineering. 2025; 12(1). Available at: https://t-s.today/PDF/09SATS125.pdf (in Russian). DOI: 10.15862/09SATS125

Interaction of submerged floating tunnels and various types of rolling stock

¹Vladimir Yu. Poliakov, ²Ivan M. Demidov

¹Russian University of Transport (MIIT), Moscow, Russia
²Limited Liability Company MMC International, Moscow, Russia

Corresponding author: Vladimir Yu. Poliakov, e-mail: pvy55@mail.ru

Abstract. Submerged floating tunnels represent a novel type of transport structure designed for crossing deep-water obstacles such as sea bays, straits, and similar features. The lack of construction experience for such structures makes the development of rational solutions an urgent task. This article addresses the problem of interaction between railway rolling stock and submerged floating tunnels, particularly the challenge of maintaining buoyancy stability during the passage of heavy freight trains. Additionally, the interaction of the structure with high-speed trains traveling at speeds up to 360 km/h is examined. The analysis of ultra-high-speed trains operating at velocities up to 1 000 km/h (Maglev and Hyperloop technologies) focuses on the critical speed phenomenon, where a significant increase in the dynamic response of the structure is observed. The well-known solution for critical speed forces on an infinite beam resting on an elastic foundation is used to assess the validity of the results presented in this study. Furthermore, findings from investigations into the reliability of solutions regarding asymptotic convergence, numerical stability of integration steps for differential equations, and beam wavelength are provided. The article also explores measures to ensure buoyancy stability under different types of train loads. Given the absence of real-world structures of this kind, numerical experimentation serves as the primary research method.

Keywords: submerged floating tunnel; optimization; dynamic interaction; critical speed; Hyperloop

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