نتایج جستجو برای: railway geometry

تعداد نتایج: 158787  

2018
Guillaume Perrin Denis Duhamel Christian Soize Christine Funfschilling G. Perrin D. Duhamel C. Soize C. Funfschilling

In a context of increasing interoperability, several high speed trains, such as ICE, TGV, ETR 500, are likely to run on the same tracks, whereas they have been originally designed for specific and different railway networks. Due to different mechanical properties and structures, the dynamic behaviors, the aggressiveness of the vehicle on the track and the probabilities of exceeding security and...

2009
Bar Güne

Railways, which had long been neglected in Turkey, reclaim their significance once more with the new investments that are being made in recent years. In correlation with growing demand for transportation, the need for high-speed railway lines and for bridges and viaducts, which constitute integral components of railways, increases by the day. In many European states, there are railways that can...

Journal: :Railway Engineering Science 2021

Abstract This paper presents a non-contact measurement of the realistic catenary geometry deviation in Norwegian railway network through laser rangefinder. The random is included model to investigate its effect on pantograph–catenary interaction. dispersion longitudinal assumed follow Gaussian distribution. A power spectrum density represents vertical contact wire. Based Monte Carlo method, sev...

Journal: :civil engineering infrastructures journal 0
javad sadeghi centre of excellence in railway transportation, school of railway engineering, iran university of science and technology, tehran, iran araz hasheminezhad research assistant, school of railway engineering, iran university of science and technology, tehran, iran mohammad essmayil kaboli m.sc. student, school of railway engineering, iran university of science and technology, tehran, iran

the main design criteria of ballasted railway tracks include rail deflections, rail bending stresses, rail wheel contact stresses, sleeper bending moments and ballast sleeper contact pressures. numerous criteria have been defined for the design of ballasted railway tracks owing to the various mechanical properties of track components and their complex interaction. therefore, railway track desig...

Journal: :Remote Sensing 2022

The article discusses an important issue of railway line construction and maintenance, which fundamentally is the verification geometric parameters track. For this purpose, mobile measurements have been performed using a measuring platform with two properly arranged GNSS receivers, made it possible to determine base vector platform. functionality system was extended by IMU. In article, effect c...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1390

in current study, 63 samples of bat populations collected from differ regions were used for evaluating the geographic variations. twenty cranial and dental characters for traditional morphometric and landmarks method on the ventral, dorsal skull and mandible for geometry morphometric studies were used. statistical analyses of traditional morphometric and geometry morphometric data indicated low...

Journal: :Periodica Polytechnica Transportation Engineering 2019

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