Up to now most of the ballastless track systems, which have been built on Ballastless track systems using discrete rail seats as well as systems with sleeper . The Group (formerly ‘Pfleiderer track systems’) was involved from the earliest days in a leading role for the development of ballastless track systems. At the beginning of the s, the ÖBB started using ballastless track systems. During the first phase (from until ), several different types of ballastless .
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PCM AG -RHEDA RX
Sinceit has official German approval for high-speed applications. You take no chances with these systems, especially with newly constructed lines: In combination with the benefits of bi-block sleepers — with which track-geometric dimensions such as gauge superelevation are exactly defined in advance — the installation techniques lead to highly exact track geometry after installation.
Approval of the concrete track-supporting layer proved to be considerably more difficult. These two elastic elements have to be copied by the elasticity of the rail fastening system in the ballastless track and of the elasticity of a second layer which is situated at the bottom of the prefabricated slabs.
For new official approvals, it is advisable, before preparation of the documented evidence traxk conformity, to coordinate with the responsible examining authorities as to which criteria must be checked and in ballastlese manner. The typical behaviour of a ballasted track shows the elasticity in the ballast itself and in the rail fastening system.
For example it is possible to make the whole system rideable for road vehicles e. For the track components, it was fundamentally travk to resort to European standardisation, with the result that the approval authorities accepted existing research and test reports as basis for their approval.
Patil Group of Industries is also involved in the drawing and stranding of High Tensile Steel Wire which is a major and most crucial input in the manufacture of Pre-Stressed Concrete Sleepers.
Starting from the basis of traditional trough-track designs with mono-block sleepers, RHEDA track models were further developed to track systems with bi-block sleepers. Ability to correct levelling.
Ballastless track systems: top performance on a firm foundation
Cross acceptance enables official approval of an existing, proven system on the basis of evidence of conformity provided to show conformity only with those requirements that are different from already existing official approvals.
The advantages of a ballastless track over a traditional superstructure are its highly consistent track geometry, its longer life span, and the reduced need for maintenance.
The track planning team did not have access to tunnel planning documents; it obtained only longitudinal and lateral cross-section representations, as well as a local inspection tour before award of contract. By Global Railway Review. It was consequently necessary to prepare two practically independent sets of approval documents, which required mutual, overall harmonisation. With the RHEDA ballastless track system, we make our significant contribution to implement high-performance rail infrastructure in India.
This model was successfully implemented with mono-block sleepers on the Berlin-Hanover high-speed line, in Rathenow. For the Kashmir project, the track was intended to be installed in five single-track tunnels with lengths of 1 to 2.
TRAVERTEC: Ballastless Track Systems
This institution, however, does not include a department for overall track systems. ONE portfolio profile is rounded off by consulting services within track technology: Website development by e-Motive Media Limited. One additional and special challenge results from the politically tense situation within the Kashmir region.
Recently, the company has succeeded in profitably exploiting its experience in numerous projects for various countries and railway authorities. This tool allows the collection of large amounts of data, its analysis and the prediction of situations based on statistical patterns.
The construction documents prepared for this project and the public approval provided, by no means coincided with Indian requirements for planning of a mainline track. In the event of major settling that exceeds the ability of the fastenings to adapt, the system lets you replace the affected modules and then relevel.
View Contact Call Seller Now. Therefore, questions of superstructure are of major importance. Further advantages of ballastless tracks include better and controlled drainagethe elimination of flying-ballast damage on rolling stock and civil engineering structures, a shallower superstructure, and the possibility run-over sections such as crossings over which pneumatic vehicles can be driven.
The interfaces resulting from this situation often require additional documentary evidence of conformity that is usually extraordinarily difficult to provide and that have no relevance to actual practice, since the ballastless track acts as a total system. Leave a Reply Cancel reply Your email address will not be published.
Accept Reject Read More. The success systeem ballastless-track technology is primarily based on the following advantages: This significantly reduces loads placed on the fastenings and appreciably extends life cycles. RHEDA RX is a ballastless track that is designed as a mass-spring system supported elastically over its entire surface.
Related people Jens Kleeberg. Here as well, it was possible to achieve permission for a deviation from the Indian Bridge Code: Although this investigation was not part of the contract for RAIL. Further disadvantages of ballastless tracks are the impossibility of adjusting or correcting track geometry once concrete has been set, the necessity of a stable infrastructure since no adjustments can be made to the superstructurehigher noise emissions, and longer repair times when the concrete slab is damaged e.
The engineering design of this model guarantees a high degree of exactness in track gauge, as well as in overall track geometry. Concrete assures affectiveness of the bond between the sjstem and supporting concrete slab.