Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Numerical Investigation of Critical Velocity of Embedded Rail System Considering Different Depths of Bedrock
https://orcid.org/http://orcid.org/0009-0005-1554-7775
https://orcid.org/http://orcid.org/0000-0002-6730-4311
https://orcid.org/http://orcid.org/0000-0002-6706-3626
This study focuses on analyzing the dynamic response of an embedded rail system at various train speeds. The study critically examines the influence of different track components on the response. The subgrade beneath the track is assumed to be homogeneous, with bedrock considered at varying depths. It was found that shallower bedrock levels increase the critical velocity of the track system and also make the characteristics of the track components more influential. The hydraulically bonded layer was shown to have a considerable impact on the dynamic behavior of the track. The study also investigated the effect of dual axles on the system’s performance. It was demonstrated that analyzing the “difference” of peak responses provides a more accurate estimation of the critical velocity. Additionally, the impact of ground reinforcement, achieved through the use of concrete piles, was explored. The concrete piles improved the vertical stiffness of the track-ground system and reduced the track deflections. Their effectiveness was shown to depend on factors such as pile length, diameter, and spacing. End-bearing piles were found to significantly enhance the critical velocity of the system.
Numerical Investigation of Critical Velocity of Embedded Rail System Considering Different Depths of Bedrock
https://orcid.org/http://orcid.org/0009-0005-1554-7775
https://orcid.org/http://orcid.org/0000-0002-6730-4311
https://orcid.org/http://orcid.org/0000-0002-6706-3626
This study focuses on analyzing the dynamic response of an embedded rail system at various train speeds. The study critically examines the influence of different track components on the response. The subgrade beneath the track is assumed to be homogeneous, with bedrock considered at varying depths. It was found that shallower bedrock levels increase the critical velocity of the track system and also make the characteristics of the track components more influential. The hydraulically bonded layer was shown to have a considerable impact on the dynamic behavior of the track. The study also investigated the effect of dual axles on the system’s performance. It was demonstrated that analyzing the “difference” of peak responses provides a more accurate estimation of the critical velocity. Additionally, the impact of ground reinforcement, achieved through the use of concrete piles, was explored. The concrete piles improved the vertical stiffness of the track-ground system and reduced the track deflections. Their effectiveness was shown to depend on factors such as pile length, diameter, and spacing. End-bearing piles were found to significantly enhance the critical velocity of the system.
Numerical Investigation of Critical Velocity of Embedded Rail System Considering Different Depths of Bedrock
https://orcid.org/http://orcid.org/0009-0005-1554-7775
https://orcid.org/http://orcid.org/0000-0002-6730-4311
https://orcid.org/http://orcid.org/0000-0002-6706-3626
This study focuses on analyzing the dynamic response of an embedded rail system at various train speeds. The study critically examines the influence of different track components on the response. The subgrade beneath the track is assumed to be homogeneous, with bedrock considered at varying depths. It was found that shallower bedrock levels increase the critical velocity of the track system and also make the characteristics of the track components more influential. The hydraulically bonded layer was shown to have a considerable impact on the dynamic behavior of the track. The study also investigated the effect of dual axles on the system’s performance. It was demonstrated that analyzing the “difference” of peak responses provides a more accurate estimation of the critical velocity. Additionally, the impact of ground reinforcement, achieved through the use of concrete piles, was explored. The concrete piles improved the vertical stiffness of the track-ground system and reduced the track deflections. Their effectiveness was shown to depend on factors such as pile length, diameter, and spacing. End-bearing piles were found to significantly enhance the critical velocity of the system.
Numerical Investigation of Critical Velocity of Embedded Rail System Considering Different Depths of Bedrock
Transp. Infrastruct. Geotech.
Mishra, Utkarsh (Autor:in) / Sawant, V. A. (Autor:in) / Sahoo, J. P. (Autor:in)
01.01.2025
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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