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Vivien Jóvér, Zoltán Major, Attila Németh, Dmytro Kurhan, Mykola Sysyn and Szabolcs Fischer
The most important thing nowadays is to use available resources to develop infrastructure as efficiently as possible. In this regard, evaluating the deterioration of tramway tracks is critical from both a technical and an economic viewpoint. In Hungary, ...
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Szabolcs Fischer, Nándor Liegner, Péter Bocz, Ákos Vinkó and György Terdik
This paper deals with the time-frequency characteristic analysis for track geometry irregularities using field data recorded by a comprehensive track inspection train. The parameters of the track gauge and the left and right rail alignment are considered...
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Roberto Sañudo, Marina Miranda, Borja Alonso and Valeri Markine
Sleeper spacing has been a taboo subject throughout the railway?s history. Safety concerns related to the structural integrity have been the main causes of not addressing this matter. There are no specific and clear recommendations or guidelines in relat...
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Jae-Ik Lee, Kyu-Hwan Oh and Yong-Gul Park
Track impact factor (TIF) is a coefficient for estimating the increase of train dynamic load and is a major factor for the evaluation of dynamic stability of railway tracks. Many kinds of TIF in ballasted and ballast-less slab tracks consider only speed ...
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Bongsik Park, Yeong-Tae Choi and Hyunmin Kim
The advancement in digital image analysis methods has led to the development of various techniques, i.e., quantification of ballast gravel abrasion. In this study, the recognition rate of gravel aggregates has been significantly increased by improving th...
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Kyuhwan Oh, Jaeik Lee, Junhyeok Choi and Yonggul Park
Countries such as Korea adopt design codes, evaluation criteria and specifications from standards originating abroad; this leads to a lack of distinction of the separate applications of dynamic stability evaluation parameters between various track struct...
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Daniel Bassey, Ben Ngene, Isaac Akinwumi, Victor Akpan and Gideon Bamigboye
Across the world, ballasted railway tracks are utilised extensively due to their cost efficiency, ease of drainage, and capacity to withstand cyclic imposed loadings from heavy trains. In spite of these benefits, the ballast is often considered as a flex...
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B. Eller,S. Fischer
Pág. 72 - 85
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Dan Li and Sakdirat Kaewunruen
Railway networks are exposed to various environmental conditions. It is thus critical that infrastructure components can tolerate such effects by design. Railway sleepers are a critical safety component in ballasted track systems. Prestressed concrete is...
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Inmaculada Gallego Giner, Ana Rivas Alvarez, Santos Sánchez-Cambronero García-Moreno, Julián Lajara Camacho
Pág. 357 - 365
The aim of the paper is to present a numerical model for a ballasted railway track that includes the dynamic effect of a moving train load and predicts the values of the vertical stiffness of the infrastructure. This model is therefore deemed to be a too...
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