Results 91 to 100 of about 643,218 (189)

Diagnostics of Track Quality of Ballastless Track and Transition Areas in Vicinity of Portals of Tunnel Turecky vrch

Civil and Environmental Engineering, 2016
The paper deals with the partial results of diagnostics of experimental sections of ballastless track Rheda 2000® and transition areas between ballastless and ballasted track structure around portals of tunnel Turecky vrch after six measurement cycles ...
Šmalo Michal
doaj   +1 more source

Assessment of Track Quality in Trial Test Sections by Spot and Continuous Method

Communications, 2015
The quality of track alignment and track geometry is an essential precondition of safe and economical operation of railway track. The paper provides an analysis of diagnostics of relative track geometry parameters and evaluation of measurement deviations
Michal Smalo, Libor Izvolt
doaj   +1 more source

Precision Analysis of Height Measurements Realized on Ballastless Track

, 2014
The ballastless track is a relatively new track construction built in Slovak Railways. The Department of Geodesy and the Department of Railway Building and Track Management of the University of Zilina have been involved in the research project aimed to ...
Peter Pisca, Jana Izvoltova, Andrej Villim, Marian Mancovic   +3 more
core   +1 more source

Influences of Under-Track Foundation Diseases on Track System

Buildings
In order to study the influence of the under-track foundation disease on the track system, based on the CRTS II slab ballastless track in ABAQUS, this paper analyzes the influence of the overall temperature, temperature gradient, CA mortar layer ...
Jinbao Yao, Xiaoteng Sun, Zhikun Song, Yueyue Chen   +3 more
doaj   +1 more source

The Wavelength Characteristics of Vertical Deformation and a Train Dynamics Simulation of Long-Span, Cable-Stayed Bridges Under Complex Loads

Applied Sciences
Ballastless tracks have a high smoothness, but the corresponding laying requirements are strict. Therefore, the maximum span of cable-stayed bridges that can accommodate ballastless tracks is 392 m.
Zhiqiang Pang, Mangmang Gao, Guolong Li, Jingjing Yang, Fei Yang   +4 more
doaj   +1 more source

Ballastless track in tunnels [PDF]

, 2016
Během posledních let se neustále zvyšují nároky na konvenční železniční tratě se štěrkovým kolejovým ložem. Snaha dosáhnout vyšších maximálních rychlostí a zatížení na nápravu dala vzniknout konstrukci pevné jízdní dráhy.
Horčička Jiří
core  

Study on the dynamic contact relationship between layers under temperature gradients in CRTSⅢ ballastless track

High-Speed Railway
In areas with large temperature differences, the uneven distribution of temperatures in the CRTS III ballastless track slab due to daytime sunlight can cause warpage deformation, leading to periodic rail irregularities that increase the wheel-rail impact
Lei Zhao, Guotang Zhao, Guotao Yang, Hao Jin, Chenxi Li   +4 more
doaj   +1 more source

Ballastless track on railway bridges [PDF]

This study focuses on problems related to the application of ballastless track on railway bridges. The different kinds of this track are presented, along with their advantages and disadvantages.
Henryk Zobel, Cezary Kraśkiewicz, Przemysław Mossakowski   +2 more
core   +1 more source

High-Accuracy Modeling and Mechanism Analysis of Temperature Field in Ballastless Track Under Multi-Boundary Conditions

Applied Sciences
The non-uniform temperature distribution in ballastless track slabs under complex meteorological conditions can induce structural defects, threatening the safety of high-speed railways.
Ying Wang, Yuelei He
doaj   +1 more source

Blast-Induced damage evolution and resilience assessment of CRTS III slab ballastless track systems considering rapid repair strategies

Explosive loading poses a severe threat to the structural integrity and operational reliability of ballastless tracks; however, a systematic approach for damage assessment, repair strategy selection, and post repair safety evaluation remains insufficient.
Yanhui Liu, Kezhou Jiang, Hongjin Chen, Xiangshen Song   +3 more
core   +1 more source