Parcourir par sujet "Railroads"
Voici les éléments 1-20 de 29
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5G-VICTORI: Future Railway Communications Requirements Driving 5G Deployments in Railways
(2021)The complete transformation of the ICT domain driven by 5G network principles and capabilities, will impact significantly the path towards digitalization of many vertical industries, with modern railway transportations ... -
Actions on railway track panel and ballast-behavior of the Hellenic limestone ballast
(2009)In this paper a new method is presented for the estimation of actions on sleepers and the pressures that develop under the seating surface of the sleeper and are transmitted on the ballast. Results from the tests performed ... -
Assessing subway network ground borne noise and vibration using transfer function from tunnel wall to soil surface measured by muck train operation
(2019)During the operation of urban subway rail transit system, ground vibrations are generated that transmitted through the ground and cause vibrations in nearby buildings. The operation of these systems can be characterized ... -
Ballast stressing on a railway track and the behaviour of limestone ballast
(2008)In this paper the results of the tests performed on the ballast used in the Greek network are presented. The tests were conducted in laboratories in France and Greece, and led to a change in the Greek technical specifications. ... -
A combined numerical/experimental prediction method for urban railway vibration
(2017)Railway-induced ground vibrations can cause negative effects to people/structures located in urban areas. One of the main sources of these vibrations is from the large vehicle forces generated when train wheels impact local ... -
Comparison of magnitude of actions on track in high-speed and heavy-haul railroads
(2012)In modern high-speed railways the necessity for achieving low life-cycle costs has led to a well-compacted-almost undeflected-substructure. Applications of excellent quality substructure are encountered in the French network ... -
Design loads on railway substructure-comparative parametric investigation on the influence of fastening stiffness (European and Japanese)
(2012)The existing international bibliography-German, French, AREMA methods- includes various methods for a realistic estimation of loads on track superstructure and the reactions/actions on the sleepers. The magnitude of loads ... -
The effect of railway local irregularities on ground vibration
(2015)The environmental effects of ground-borne vibrations generated due to localised railway defects is a growing concern in urban areas. Frequency domain modelling approaches are well suited for predicting vibration levels on ... -
Environmental noise monitoring program in urban & semi urban motorway & railway networks in Greece. A comprehensive analysis for the last 10 years of operation
(2012)Environmental Transportation Noise Monitoring Programs in urban & semi urban motorways & railway networks in Greece, is an obligation enforced by the current EU & Greek environmental legislation for the last ... -
Fatigue and fracture behavior of pearlitic Grade 900A steel used in railway applications
(2016)In overloaded railway networks, rail surface defects developed under rolling contact fatigue (RCF) if left untreated, may propagate to the bulk of the rail and become critical for its structural integrity. To avoid critical ... -
Fatigue assessment in steel railway bridges using output only vibration measurements and partial structural information
(2016)A novel methodological framework for the online fatigue lifetime assessment of steel railway bridges is presented in this paper. By adopting a simply supported beam model amenable to a moving force at a constant velocity, ... -
Ground-borne noise and vibration transmitted from subway networks to a typical Athenian multi-storey reinforced concrete building
(2016)The transmission of ground-borne vibrations from subway rail transit systems in a building is governed by the soil-foundation interaction, the reduction of vibration level between floors, and the amplification due to ... -
Ground-borne noise and vibration transmitted from subway networks to multi-storey reinforced concrete buildings
(2018)During the operation of urban subway rail transit systems, vibrations are generated that transmitted through the soil, induce vibrations in nearby buildings. The transmission of ground-borne vibrations from subway rail ... -
High railway rolling noise reduction by combining existing track based solutions
(2015)The overall objective of the EU funded Quiet-Track project is to provide step changing track based noise mitigation systems and maintenance schemes for the railway rolling noise. This paper focuses on the combination of ... -
A hybrid two-step approach for evaluating the impact of local rail defect on building vibration
(2017)With the development of light rail transit in urban areas, the effect of railway vibrations on buildings and people inside buildings is a growing problem. In particular, urban transit commonly generates large vibration ... -
Improving Multiclass Classification of Cybersecurity Breaches in Railway Infrastructure using Imbalanced Learning
(2021)Machine learning approaches and algorithms are spreading in wide areas in research and technology. Cybersecurity breaches are the common anomalies for networked and distributed infrastructures which are monitored, registered, ... -
Influence of rail pad stiffness on track stressing, life-cycle and noise emission
(2010)In this paper the results for the influence of the rail pad stiffness on the Railway Track stressing and its Life-Cycle is presented, as derived from a research program performed in Greece due to the appearance of extended ... -
Links between network topology and socioeconomic framework of railway transport: Evidence from Greece
(2017)This paper studies the Greek railway network (GRAN) by using complex network analysis (CNA) and empirical approach. The study aims to detect the socioeconomic information immanent to the GRAN's topology and to provide ... -
Modelling the singular rail and wheel surface defect for predicting railway ground vibration
(2015)When undertaking a railway vibration assessment, the presence of singular defects on the rail and wheel surfaces significantly affects the ground vibration level. The objective of this paper is to analyse the most common ... -
Monitoring and assessing the effects from Metro networks construction on the urban acoustic environment: The Athens Metro Line 3 Extension
(2018)The Line 3 Extension from Aghia Marina to Piraeus constitutes one of the most significant construction projects in full development in Athens Greater area. For the management and abatement of the air borne noise generated ...