Parcourir par sujet "Railroad tracks"
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Actions on a railway track, due to an isolated defect
(2014)The rail running table imposes to the vehicle a forced vibration. It is not smooth but instead it comprises a lot of faults that give to the rail running table a random surface. Furthermore under the primary suspension ... -
Design methodology of slab track systems
(2008)The substantial ballast wear in high-speed lines has led to the adoption of the slab track. In this paper a methodology for the calculation of the actions applied on the slab track and the design philosophy of such systems ... -
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 ... -
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 ... -
Influence of the track's stiffness coefficient on the acting loads, deflection and dimensioning of slab track
(2011)Slab Track, as all railway structures, should provide secure train running and smooth passenger ride. Moreover, it should present sufficient vertical elasticity to distribute the loads to the adjacent fixing points of the ... -
Loads on Track, Ballast Fouling, and Life Cycle under Dynamic Loading in Railways
(2010)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 laboratory tests ... -
A new, simple and accurate transition curve type, for use in road and railway alignment design
(2014)Purpose: This paper evaluates all the available transition curve types related to road and railway alignments and proposes a new, well verified, transition curve type that combines the accuracy of clothoid curve and the ... -
Noise reduction in urban LRT networks by combining track based solutions
(2015)The overall objective of the Quiet-Track project is to provide step-changing track based noise mitigation and maintenance schemes for railway rolling noise in LRT (Light Rail Transit) networks. WP 4 in particular focuses ... -
Noise reduction in urban LRT networks by combining track based solutions
(2016)The overall objective of the Quiet-Track project is to provide step-changing track based noise mitigation and maintenance schemes for railway rolling noise in LRT (Light Rail Transit) networks. WP 4 in particular focuses ... -
Railway ground vibrations induced by wheel and rail singular defects
(2015)Railway local irregularities are a growing source of ground-borne vibration and can cause negative environmental impacts, particularly in urban areas. Therefore, this paper analyses the effect of railway track singular ... -
Reduced service life of concrete sleepers due to inadequate design
(2010)During the 1980's, the twin-block concrete sleepers/ties -designed and laid in railway lines with maximum operational speed of 200 km/h in France- which were laid on a track with maximum operational speed of 140 km/h in ... -
Secondary Stiffness of Fastening Clips: Influence on the Behavior of the Railway Track Panel
(2016)Fastenings are all the materials whose function it is to structurally connect the rail to the sleeper. The fastenings used in concrete sleepers must be elastic in both tension and compression. The basic component of all ... -
Transient loads/ actions on railway track: The case of a deformed, bent joint or welding
(2014)The railway track is modeled as a continuous beam on elastic support. Train circulation is a random dynamic phenomenon and, according to the different frequencies of the loads it im-poses, there exists the corresponding ... -
Vibration & ground borne noise monitoring and evaluation of the performance of various antivibration measures at athens tramway
(2005)The Athens Tramway is a 48km light rail system that dramatically improves the access from the city centre to the coastal region, where many important "Athens 2004 Olympic installations" were constructed, as well as to the ... -
Visualization of the Rolling Contact Fatigue Cracks in Rail Tracks with a Magnetooptical Sensor
(2019)The rolling contact fatigue cracks (RCF), produced at the surface of the rail tracks, can be detected using a magnetooptical (MO) sensor. Rail tracks are carbon steels with pearlite microstructure. This microstructure has ...