List view / Grid view
8 April 2008 | By Andreas Beck and Thomas Hempe, Specialists in Track Technology Management, DB Netz AG
Permanent way is required to absorb the static and dynamic forces resulting in vertical (z), lateral (y), and longitudinal (x) directions from railway traffic loads, to effectively distribute them, and to transfer them into the sub-grade at reduced magnitudes. Superimposed on these external forces are additional internal forces arising from…
8 April 2008 | By Dipl.-Ing. Alfred Gruber, Head of Infra Service Division, ÖBB-Infrastruktur Betrieb AG
In order to be competitive on the liberalised rail transport market, the ÖBB Group must operate with market-oriented companies. A key success factor is the reliable transport handling and, thus, the reliability of the infrastructure facilities. That is where the division Infra Service of ÖBB-Infrastruktur Betrieb AG comes in.
8 April 2008 | By Dr. Nick Thom, Lecturer, School of Engineering, University of Nottingham, UK
Despite modern railways being at the forefront of technologies such as power transmission, signalling, control systems and vehicle dynamics, there is one element which is stuck firmly in the Stone Age – the trackbed. It is true that some tracks are being designed and built with concrete or asphalt bases,…
26 November 2007 | By Harald Loy, System Engineer, Getzner Werkstoffe GmbH
Geometrical discontinuities along turnouts can lead to strong localised variations of superstructure loads. By using Under Sleeper Pads (USP) with varying stiffness, the bedding conditions can be optimised and as a result the turnout area can be smoothed out. Modern railway tracks need to be able to bear the loads…
26 November 2007 | By Dipl.-Ing. Felix Amberg, President of COSUF and Chairman of Amberg Engineering Ltd/Hagerbach Test Gallery Ltd and Prof. Dr.-Ing. Alfred Haack, Past-Chairman, STUVA e.V.,
COSUF – the ITA-Committee on Operational Safety of Underground Facilities, was set-up in May 2005 at the ITA World Tunnel Congress in Istanbul, Turkey. This important step followed a joint initiative of eight European research projects which all aimed at improved tunnel safety after the disastrous fire accidents in various…
26 November 2007 | By Dr. Konstantin von Diest, Head of Development, Stahlberg Roensch
A railway track represents a large investment that is not only meant to enable safe, fast and comfortable passenger and freight traffic, but is also expected to be permanently available. The track should allow decades of intense utilisation with no major interruptions. Track possessions for maintenance work or premature failure…
26 September 2007 | By Steffen Knape, Director, Eurailscout
Corrugation on rails causes severe damage to the railway infrastructure. Corrugation causes noise, additional stress in the rails and high frequency vibration which damages the subsoil; squats can also occur if rail head corrugation is not controlled.
26 September 2007 | By Ton Bontekoe, Product Manager – Gotcha, Lloyds Register Rail
Achieving high levels of rail system reliability in all the phases of the life cycle at an optimal cost requires sound information, robust risk based analysis, proper implementation of asset management activities and on-going critical review.
30 July 2007 | By James Abbott, Technical Editor
Recent research has underlined the importance of maintaining rails with regular grinding. The behaviour of the railhead under load used to be an imperfectly understood subject. Research work has broadened the rail industry’s knowledge; now, the question of how rail deteriorates over time and the way in which grinding can…
3 April 2007 | By Klaus Stahl, Manager of Process Maintenance, DB Netz AG
Ensuring efficient breakdown repair management for DB Netz AG means the guarantee of availability of the track system around the clock, 24 hours a day, 365 days a year.
6 February 2007 | By Anders Frick, Track Engineer and Per-Olof Larsson-Kråik, Research and Development Coordinator, Banverket
Over the last few years, rail grinding operations at Banverket in Sweden has become a natural and important part of the total maintenance track work. The number of track metres that were ground during 2006 was almost 1 million (exactly 997272 track metres) and almost 400 switches. The way of…
28 November 2006 | By Andrew McNaughton, Chief Engineer, Network Rail and Global Railway Review Editorial Board Member and Bob Cummings, Head of Track Engineering, Network Rail
The strategy for the maintenance and renewal of track on the Great British network has been transformed over recent years. There is now a well embedded pro-active engineering culture of ‘predict and prevent’, rather than a reactive one of ‘find and fix’.
28 November 2006 | By Neil Jones, Territory Structures Engineer, Network Rail
A £14 million scheme to replace and refurbish the Leven viaduct in South Cumbria was successfully completed by Network Rail on time and within budget in July 2006. The 16 week project is the largest civil engineering bridge scheme in a five-year programme of work in the London North Western…
28 November 2006 | By Philippe Mugg, Technical Director, Vossloh Cogifer SA / Vossloh Switch Systems
At InnoTrans 2006 in Berlin, Vossloh Cogifer SA, a subsidiary of the Vossloh Group, pre-sented not one, but two innovations in turnout technology primarily for high-speed turnouts. These are, on the one hand, a totally new turnout system for slab tracks, and, on the other, a turnout drive system with…
28 November 2006 | By Coenraad Esveld, Professor of Railway Engineering and Global Railway Review Editorial Board Member and Valéri Markine, Assistant Professor, Delft University of Technology
Currently, all over the world, non-ballasted track concepts are being applied, although still at a moderate volume. If the low maintenance characteristics of slab track on open line are to be retained, great care must be taken to ensure that the subgrade layers are homogenous and capable of bearing the…
