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Mechanical properties of concrete with recycled composite and plastic aggregates [PDF]
Kaewunruen, Sakdirat, Li, Dan
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Ballasted Track versus Ballastless Track
Key Engineering Materials, 2015First concrete sleepers were made of normal reinforced concrete and used during the 1930s and 1940s. Concrete railroad ties became popular in Europe after World War II because of the advances in design, material quality and production of pre-stressed concrete. Now as before, concrete sleepers on ballast represent the primary basis of track construction,
Szabolcs Attila Köllő +2 more
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Vertical Sediment of a Ballastless Track
2020At the Experimental ring of JSC “VNIIZHT” at Shcherbinka station, the comparative tests of four types of ballastless structures of the LVT track (Russian Railways, Russia), FFB (MaxBogl, Germany), NBT (Alstom. France), EBS (Tines, Poland) had been completed.
Aleksander Savin +3 more
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SOLUTIONS FOR ACOUSTICAL PROBLEMS WITH BALLASTLESS TRACK
Journal of Sound and Vibration, 2000Ballastless track has higher sound emissions compared to ballasted track due to the reduced connecting impedance for the rail, the reduced vibration decay rates along the rail and the reduced absorption. A study using a simulation tool for the prediction of sound for trains led to a proposal for an acoustical innovative ballastless track design (AIFF).
R.J. DIEHL, R. NOWACK, G. HÖLZL
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Investigations into the Critical Speeds in Ballasted and Ballastless Track
2021The modern high-speed railway usually consists of track structure, subgrade and soil layers. The existence of track structure and subgrade can both improve the critical speed of railway especially when the railway is built on soft soil layers. However, the role that the track structure played hasn’t been distinguished from subgrade.
Jing Hu +3 more
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Influence of Track Irregularities in the Stress Levels of the Ballasted and Ballastless Tracks
2020The ballasted and ballastless tracks present substantial differences in terms of the structural configuration and mechanical behaviour. In order to better understand the foundation performance, numerical analysis of the two types of railway track was carried out, computing the stress paths induced by the passage of trains. In this analysis, the effects
Ana Ramos +3 more
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Fast approach to calculate the ballastless track impedance
COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2018Purpose The track impedance is one of the most important parameters in designing the track circuit which is widely used in the railway signal control system to detect the presence of a train. This paper aims to calculate the ballastless track impedance by taking account of the influence of reinforcement bars.
Hanhua Zhang +4 more
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A case study of China on the ballastless track
Transport and Communications Science JournalBallastless track systems have become a cornerstone of modern high-speed railway (HSR) infrastructure due to their superior long-term performance, structural stability, and reduced maintenance requirements. This paper provides a comprehensive review of the development and technological innovations in ballastless track structures, with a focused case ...
Yang Rongshan +3 more
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State-of-the-Art of Ballastless Track at-Grade
Transportation Engineering Journal of ASCE, 1976Ballastless track support structures are regarded as possible solutions to the problems of track maintenance and the research and development of these structures is reviewed. The new types of structures include ties embedded in concrete slabs and also beams. These structures are cast-in-place, precast, and slip formed.
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Dynamic Responses of Ballastless Track with Damaged Cracks
International Conference on Transportation Engineering 2009, 2009In order to calculate the dynamic responses of damaged cracked slab track subjected to moving vehicular loads, a finite element model was established to represent the rail and the ballastless bed. The rail was modeled as linear viscoelastic discretely supported beam, while the ballastless bed was treated as linear viscoelastic continuously supported ...
Hongsong Lin +3 more
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