Artikel | Datum: 03-07-2008


Concrete sleepers for ballasted and non-ballasted track




André Nolles, Engineering Manager BAM Rail presented his view on 'Concrete sleepers for ballasted and non-ballasted track' at the Rail Technology Conferences 2008. Read the abstract of his presentation.



Concrete sleepers for ballasted and non-ballasted track

Nowadays most new switches and turnouts are equipped with concrete sleepers. For ballasted track most of these switches are applied in renewal situations, while the non-ballasted are mostly on new-built or complete reconstructed lines.

One of the advantages of using concrete sleepers is the ability of achieving a very high accuracy in the switch geometry. This means a better ride comfort for passengers and less forces onto the switch resulting in less maintenance. Specific attention is required at renewal situations, while switches with wooden sleepers are often optimized at site during maintenance or already at construction in order to correct small differences. This means that before starting the design of a switch with concrete sleepers a detailed survey of the current track layout has to be performed. Only in this way a correct implementation of a new switch within the current track layout can be achieved. One should bear in mind that in principle every switch layout is an unique one.

Another advantage of switches with concrete sleepers is less deterioration in track geometry. Due to its heavy weights, the switch in total will not move easily. On the other hand when maintenance has to be performed, this can only be done with heavy equipment, like tamping machines. Corrections by hand-tamping will never have the effect as it did by switches with wooden sleepers.

The third advantage is that the frog is better supported by a concrete sleeper as it was with a wooden sleeper. At wooden sleepers heavy bending occurred, leading to heavy maintenance.
In principle bending of concrete sleepers at the location of the frog will not occur. However current investigations show that some bending occurs, which requires special attention during inspections. Preventive maintenance should be performed as soon as possible to prevent further deterioration. As explained earlier this preventive maintenance should be performed with tamping machines to be able to receive the best quality and extend the life time of this switch.

The conclusion is that the use of concrete sleepers at switches is positive for the total switch geometry. Side-effect is the required use of heavy equipment like tamping machines to be able to receive the high quality standards and actually extend the life time of a switch.



About André Nolles
ir. A.H. (André) Nolles MBR is Engineering Manager at BAM Rail. He is responsible for the management at the department engineering. This department is responsible within BAM Rail for the design support at contracting as well as construction, espcially in case of Design and Construct contracts. Also the surveying of the tracks during construction and renewals is part of the engineering department of BAM Rail. BAM Rail offers a complete range of rail-related services, from engineering to construction and aftercare, including 24/7 emergency callout. With a staff of 950 well-trained specialists, BAM Rail operates throughout the Netherlands and adjacent regions in neighbouring countries. The activities cover all rail disciplines, from underground cables to the overhead catenary and everything in between. BAM Rail is closely involved in high-profile projects such as the High-Speed Line and the Betuwe Freight Line but is also working on urban tramlines and metro lines as well as rail tracks and crane tracks for industry. BAM Rail is an operating company of the Royal BAM Group.


About Rail Technology Conferences 2008
The Rail Technology Conferences 2008 took place at the Railway Museum in Utrecht on 24 and 25 June. The first day of the conference highlighted Switches and the second day focussed on properties of the wheel/rail contact at Wheel Rail Interface. More information is available at www.railtechnologyconferences.com



Deel dit artikel:                   





6 Redenen om Verkeer, Mobiliteit & Parkeren te bezoeken
Weblogposting
Lightwell levert 700 armaturen aan Heerhugowaard
Weblogposting
Interview met Ineke Meijer namens de Provincie Gelderland over het Partnership Talking Traffic
Artikel
Bezoek Active Roads op stand 2.114!
Weblogposting
Primeur op Verkeer, Mobiliteit & Parkeren 2017: De Verrijdbare Mobiele Parkeer Unit (VMPU) van De Groot Camerasystemen (stand 2.092)!
Weblogposting
Aangepaste aanbestedingsdocumenten voor Design & Construct-contracten
Nieuwsbericht
Steun op VN klimaattop voor nieuw in Nederland gevestigd klimaatcentrum
Nieuwsbericht
Eerste schop in de grond voor bouw Nieuwe Sluis Terneuzen
Nieuwsbericht
Aanbesteding A1 Apeldoorn-Azelo fase 1 van start
Nieuwsbericht
Start verkenning Drentse Zonneroute A37
Nieuwsbericht
Start proef innovatieve laadmethode afval vervoer over water
Nieuwsbericht
Viering hoogwaterveiligheid Grensmaas
Nieuwsbericht
CBS onderzoek Verplaatsingen in Nederland
Nieuwsbericht
Lezingen van topniveau bij Verkeer, Mobiliteit & Parkeren 2017
Weblogposting
Sneller en langer groen voor fietsers in ’s-Hertogenbosch
Nieuwsbericht
Dynniq gaat samenwerken met het TU Delft Transport Instituut
Weblogposting
Verkeer rijdt over de nieuwe N31 door Harlingen
Nieuwsbericht
Oost-Nederland zet in op Slimme Mobiliteit
Nieuwsbericht
Zelfrijdende auto kansloos zonder aanpassingen in verkeersinfrastructuur in Nederland
Artikel
Samenwerking Noord-Brabant en Ohio voor Smart en Green Mobility
Nieuwsbericht
Flowtack van Royal HaskoningDHV wint De Vernufteling
Nieuwsbericht
A2 Maastricht wint Schreuderprijs 2017
Nieuwsbericht
Nominaties RIONEDinnovatieprijs 2018
Nieuwsbericht








[Banners]