Results 181 to 190 of about 1,747 (202)

Ballasted Track versus Ballastless Track

Key Engineering Materials, 2015
First 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, Attila Puskás, Gavril Köllő   +2 more
openaire   +1 more source

Vertical Sediment of a Ballastless Track

2020
At 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, Vadim Korolev, Alexey Loktev, Irina Shishkina   +3 more
openaire   +1 more source

SOLUTIONS FOR ACOUSTICAL PROBLEMS WITH BALLASTLESS TRACK

Journal of Sound and Vibration, 2000
Ballastless 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
openaire   +1 more source

Fast approach to calculate the ballastless track impedance

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2018
Purpose 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, Jun Li, Jun Zou, Zhixin Wang, Jin Yang   +4 more
openaire   +1 more source

Dynamic Characteristics of Subgrade Bed for Ballastless Track

IACGE 2013, 2013
In order to study the characteristics of dynamic stress in subgrade bed, a large-scale ballastless track dynamic model test was made based on the Suining-Chongqing high-speed railway. The results indicate that the dynamic stress has an uneven distribution along subgrade cross-section, and the unevenness is more and more obvious as the dynamic loading ...
Xianghui Kong, Guanlu Jiang, Dong Xiao, Anhong Li   +3 more
openaire   +1 more source

Dynamic Responses of Ballastless Track with Damaged Cracks

International Conference on Transportation Engineering 2009, 2009
In 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, Xueyi Liu, Juanjuan Ren, Ammar A. Mohammed Shubber   +3 more
openaire   +1 more source

Ballastless track - ECOTRACK - Poc programme

2012
U sklopu predavanja predstavljen je razvoj konceptualnog prototipa tijekom projekta "Betonski kolosijek - ECOTRACK", financiranog u sklopu POC programa Poslovno inovacijskog centra Hrvatske.
Lakušić, Stjepan, Baričević, Ana
openaire  

Vertical Displacement Distributions of Double-Track High-Speed Railways' Ballastless Track Infrastructure

Application of Nanotechnology in Pavements, Geological Disasters, and Foundation Settlement Control Technology, 2014
This paper centers on the slab ballastless track widely used in China high-speed railway, using ABAQUS finite element software, establishes double-track high-speed railway vehicles-track-roadbed system secondary vertical coupling dynamic finite element model, and systematically analyzes the temporal-spatial distribution of subgrade bed vertical ...
Yanqing Du, Mingzhou Bai, Yun Chen, Diqing Yi   +3 more
openaire   +1 more source

ANALYSIS OF BALLASTLESS RAILWAY TRACK STRUCTURES OVER SOFT CLAYS

Malaysian Journal of Civil Engineering, 2018
Railway developments in Egypt have gained much interest recently. This development was in many fields one of which is railway speeds and the term high speed trains “HST” was introduced as an alternative on Egyptian national railways. HST has many challenges from a geodynamic perspective; such as the case of HST operating in areas with soft soils ...
Mohamed Ismail Aly, Mohamed El-Shabrawy, Mohamed El Gendy, Ahmed Adel Turk   +3 more
openaire   +1 more source

Railway applications. Ballastless track systems

2017
  +6 more sources