Results 111 to 120 of about 18,753 (176)
Hybrid DEM-FDM Modelling of Ballasted Railway Track Performance
InfrastructuresThe performance of ballasted railway tracks under cyclic loading is a critical issue in urban railway systems, where high traffic frequency and geometric constraints accelerate track degradation, leading to the accumulation of plastic deformations that ...
Nohemí Olivera, Juan Manuel Mayoral
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TransportesThe physical and mechanical characterization of rock materials is a crucial step for their applicability as a railway ballast layer. However, most of the standardized tests for such characterization do not have direct application for the ballast layer ...
Andre Fardin Rosa +6 more
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Renfe’s contribution to Spain’s economic growth between 1950 and 2000: sn initial estimation [PDF]
The purpose of the article is to make a first appraisal of the contribution of the railway of Iberian gauge (Renfe) to the economic development experienced by the Spanish society throughout the second half of the 20th century.
Muñoz, Miguel
core
Experimental Investigation the Geometric Properties of Aggregates on Ballast Flight Phenomena of Railway Track [PDF]
International Journal of Railway ResearchHigh-speed railway tracks have expanded significantly across the world in recent years. The increase in train operating speeds imposes considerable aerodynamic forces on the track, which can lead to several technical issues—one of the most important ...
Hamidreza Heydari +2 more
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Shock and VibrationThis study contributes to the dynamic amplification effects of different speeds of trains on the behavior of the ballasted railway. The damage mechanisms of the main components of ballasted railway tracks were investigated in 3D numerical modeling using ...
Zoa Ambassa, Jean Chills Amba
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Mechanics of railway ballast behaviour [PDF]
It is important to have consistent ballast testing methods that provide results reflecting the performance of different ballast materials in the railway trackbed. In this research, extensive laboratory tests were conducted to investigate the correlation between simple ballast index tests, and box tests simulating ballast field loading conditions in a ...
openaire
Determination of Substructure and Sub-ballast Layer Thickness of High-Speed Railway
Journal of Materials and Engineering StructuresThe thickness of trackbed layers plays a crucial role in distributing train loads to ensure that stresses on the sub-ballast and substructure remain within acceptable limits. Vietnam is currently studying the construction of a high-speed railway (HSR) on
Tran Anh DUNG, Pham Van KY, Le Hai HA
doaj
Reusing and recycling of railway ballast
, 2019 Målet med denne forskningen er å undersøke muligheter ved gjenbruk og gjenvinning av brukt jernbaneballast, ved å endre egenskapene og stivheten til ballasten. Litteratur, laboratorie tester og korte intervjuer er benyttet for å diskutere dette temaet.
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A GPR investigation of railway ballast for signal noise filtering of railway sleepers effects [PDF]
Ground-penetrating radar (GPR) has proven to be a very effective tool for the assessment and health monitoring of linear transport networks. To date, the use of this technology is well-established in highway engineering for the inspection of roads at the
Alani, Amir +4 more
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Finite Element Method for Improving Soft Soil Underneath a Ballast Railway Track
Journal of Engineering and Sustainable Development, 2013 It is always recommended to improve the properties of the soft soil beneath the railway networks often in such cases to increase its ability in bearing different applied loads and to control the expected generated settlements.
Saad Farhan Ibrahim +2 more
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