EP1904683B1 - Method and arrangement for rail track fixing - Google Patents

Method and arrangement for rail track fixing Download PDF

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Publication number
EP1904683B1
EP1904683B1 EP06755626A EP06755626A EP1904683B1 EP 1904683 B1 EP1904683 B1 EP 1904683B1 EP 06755626 A EP06755626 A EP 06755626A EP 06755626 A EP06755626 A EP 06755626A EP 1904683 B1 EP1904683 B1 EP 1904683B1
Authority
EP
European Patent Office
Prior art keywords
container
rail
arrangement
support structure
mounting points
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06755626A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1904683A1 (en
Inventor
Charles Penny
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balfour Beatty PLC
Original Assignee
Balfour Beatty PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Balfour Beatty PLC filed Critical Balfour Beatty PLC
Publication of EP1904683A1 publication Critical patent/EP1904683A1/en
Application granted granted Critical
Publication of EP1904683B1 publication Critical patent/EP1904683B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/62—Rail fastenings incorporating resilient supports

Definitions

  • This invention relates to rail track arrangements, particularly in which the rails are mounted in a continuous open channel.
  • a conventional rail essentially comprises an I-beam, having a head, a narrow web and a base.
  • the rails are supported at regular intervals by sleepers, and span the spacing between sleepers.
  • the I-beam structure provides the required vertical strength of the rail across these spans.
  • An alternative rail design uses a continuous open channel, sometimes formed by a shell, to receive the rail.
  • the rail has a substantially constant width, to enable it to be lowered into the channel. Any differences in width over the height of the rail are provided only to enable a push fit of the rail into the channel.
  • the rail may have an I-beam cross section which is converted into the desired shape for lowering into the channel, using filler pieces. This invention relates to these types of rail configuration.
  • a resilient pad is typically provided between the rail and the channel.
  • This resilient pad may be a preformed pad or alternatively may be an elastomer which is cast in place.
  • the pad needs to provide some resilience, as the channel is typically cast into a fixed concrete base. Additional elements or components may be included in the assembly, such as filler pieces or noise or vibration damper components.
  • This invention relates to the installation of railway track systems which utilise this open channel design, and this channel is referred to below as the container.
  • the rail when fully installed and fixed in the track structure, may be held in place within the container using an arrangement which provides vertical, lateral, or longitudinal retention, or a combination of any of these.
  • the container is typically arranged to continuously support the rail and resilient pad, and is concreted or grouted into or onto a solid base which may be continuous or in short or long segments, and may be concrete or steel for example.
  • the rail, the pad and the container are accurately aligned to the tight tolerance required for train operation before being grouted or concreted or fixed into their final position.
  • the known installation methods also require the rail to be in place prior to concreting in order to ensure it is in the correct position for operational train traffic.
  • WO 03/012203 discloses a rail arrangement in which the rail is supported by an inner shell and an outer shell. It is not concerned in detail with installation issues.
  • WO03/018912 discloses a rail support assembly in which modular elements are used.
  • the invention enables the process by which the rail alignment is set to be separated from the rail fixing.
  • the mounting points can be used to hold the container in a manner which simulates the presence of a rail in the container.
  • the support structure holds the container side walls in a manner and position which fixes the dimensions to an acceptable tolerance.
  • the step of fixing the container to a base may comprise grouting or concreting the container into a concrete base, particularly grouting to a level substantially flush with the upper surfaces of the side walls of the container.
  • the method provides the opportunity for the grouting to be mechanised, if required, using traditional civil engineering plant. It also enables the railing to be undertaken as a separate, fast and efficient operation with plant designed for that purpose.
  • the method preferably further comprises inserting a resilient layer into the container before inserting the rail, and after removing the support structure.
  • a resilient layer When inserting the resilient layer, upper lateral portions of the resilient layer can be clipped into the mounting points thereby to provide fixing of lateral seals.
  • the mounting points of the container can thus provide the dual function of holding the container during positioning, and subsequently retaining the resilient layer to define lateral seals.
  • the support structure preferably comprises a lid which covers the top open part of the container.
  • the lid may comprise a bracing strut which gives the required spacing between the lateral side walls of the container, with this spacing corresponding to the desired spacing when a rail is gripped in the container.
  • the lid may have at least a portion which references the position of a portion of the rail when inserted into the container, and the lid portion is then used as a reference point for the step of moving the container to a desired position.
  • the lid may be shaped to correspond to the shape of the top of an inserted rail, so that the lid can be used for positioning in the same way that the rail itself would be used in previous installation methods.
  • the lid may be continuous, and this gives the advantage or preventing debris entering the container channel.
  • the fixing operation provided by the lid can also be achieved with a discontinuous lid arrangement, for example a series of lid braces.
  • the invention also provides a rail arrangement as claimed in claim 11.
  • This rail container arrangement can be used in rail installation equipment as claimed in claim 15.
  • the invention also provides a support arrangement as claimed in claim 17.
  • This support arrangement can be used in a rail track arrangement of claim 21.
  • This rail and support arrangements of the invention provide upper mounting points for the container (for example in the form of a "shell") in a continuous base (“slab") rail structure.
  • these mounting points can be used for positioning of the container, and can enable the container to be grouted into position in a one stage process.
  • the mounting points are also used to provide fixing locations for a seal, so that the full sealed assembly can be defined by three components (rail, pad and container).
  • the container is preferably grouted into the support structure using a one-stage grouting operation, and the support structure comprises a concrete base having a channel.
  • the grout may then reach substantially the level of the mounting points, and the upper side portions of the resilient layer extend laterally over the top of a part of the grout layer. In this way, the two side top parts of the resilient layer define a seal extending right over the top edges of the container and across to the finished grout.
  • This support arrangement is installed without needing the rail, and is designed to provide the required dimensions for the container to grip a subsequently inserted rail in the desired manner.
  • Figure 1 shows a known embedded rail design.
  • the rail 20 is held in a container or shell 22 set in a bed or slab 24 of concrete.
  • the container 22 has an inner profile of an open channel to receive the rail 20 whilst also clamping the rail 20 in place.
  • a resilient filler 26 is provided between the container 22 and the rail 20.
  • the rail cross section comprises a head portion 20A and a supporting portion 20B.
  • the top of the supporting portion 20B has a pinched part 28.
  • the wider lower part of the supporting portion 20B has to pass through the pinched region of the fill 26, so that the rail must effectively be sprung into the container with a snap-action fit.
  • the head portion 20A and the supporting portion 20B have substantially the same width. The only differences in width are provided to enable the snap-action fitting of the rail into the container as described above.
  • the bed or slab 24 is lower on one side of the rail than on the other side, to allow the passage of the flange of a wheel of the railed vehicle.
  • the container 22 provides support on both sides of the rail.
  • the rail design of Figure 1 is described in greater detail in WO 99/63160 .
  • the container 22 defines a continuous supporting structure for the rail 20, rather than the discontinuous sleeper arrangement of more conventional rail designs.
  • the invention relates to the installation of rail arrangements using a container to receive the rail in a push fit manner, as described above.
  • Conventional installation involves forming a sub-assembly of the rail, resilient pad and container, and holding these in the position which gives the desired rail position.
  • the rail position is monitored during the installation adjustments, and the sub-assembly is fixed into position when the desired rail position is obtained.
  • Figure 2 shows an installed rail installation of the invention.
  • the installation again comprises a rail 20 (with substantially rectangular cross section), a container 22 in the form of a shell which receives the rail; and a resilient layer 26 between the container and the rail.
  • the container 22 has mounting points 30 at an upper region of each side 22a, 22b of the container. These mounting points are shown as tapered channels for receiving a lug. The lug may snap into and out of the tapered channel. Many other forms of clipping or latching arrangement could be envisaged.
  • the mounting points are preferably defined as a shape feature of the container 22 so that the container can simply be produced in the desired shape, with the shape defining the mounting points 30.
  • the primary function of the mounting points is to enable the dimension between the side walls of the container 22 to be fixed during installation, as will be discussed below. This enables the correct gripping characteristics of the rail.
  • Upper side portions 32 of the resilient layer 26 extend laterally over the mounting points 30 at each side of the container and engage with the mounting points 30. These portions 32 thus have lugs 34 for clipping into the tapered recess.
  • the later insertion of the resilient layer 26, which may be a pre-formed extruded member, into the container thus also covers the joint between the grout layer 24 and the support structure.
  • the mounting points 30 perform an additional function to the sealing function described above, and this additional function relates to the installation method, which is described below.
  • the mounting points 30 are used for positioning of the container, and enable the container to be grouted into position in a one stage process.
  • An I-beam shaped rail can also be used, in conjunction with filler blocks that simulate the substantially rectangular shape of the assembly to enable the same rail retention method.
  • Figure 3 shows a second example of installed rail installation of the invention, and uses the same reference numbers as Figure 2
  • the rail 20 has an I-beam cross section, and filler pieces 35 on each side of the web convert the outer shape of the rail into a substantially rectangular cross section to be received as a push fit in the container.
  • Figure 3 also shows that the side walls 22a, 22b of the container 22 may have the same height.
  • the support structure is essentially a strut brace which fixes the spacing between the sides of the container.
  • This strut is temporarily fixed to the container using the mounting points 30, as shown.
  • the container can then be moved to a desired position using the support structure 42, and Figure 3 shows screw adjustment legs 44 which seat at the base of the opening in the concrete base 40 for this purpose. These are adjusted until the container is in the desired position, and it is then fixing into the base, for example by a first stage of a grouting operation.
  • the support structure 42 is then removed, and the grouting is finished if need be. Only then are the resilient layer and rail inserted into the container.
  • the support structure 42 is designed to ensure that the dimensions are accurate to give the desired characteristics for the subsequent insertion of the rail and resilient layer. This ensures the assembly seals well, and that the rail is retained within, and can be removed from, the container with the desired forces.
  • the support structure may fix the distance between the sides walls to prevent any movement of the side walls together or apart, as in the examples above.
  • the support structure may only be required to prevent inward collapse of the side walls, as the grouting operation will force the sides inwardly, and there may then be no need to resist outward movement of the side walls. This could then allow easier removal of the support structure from the container after the container has been fixed in place.
  • Figure 5 shows a similar arrangement to Figure 3 , but shows the support structure suspending the container from above. Adjustment screws 44 are again provided for positioning, but in this example, once the desired position has been reached, a one-stage grouting step can be carried out, right up to the level of the mounting points 30, to provide the full grout layer 24 as shown in Figure 2 .
  • the grouting can be mechanised using traditional civil engineering plant.
  • the container is gripped, it is not possible to implement a one-stage grouting operation. Instead, an initial grouting step is performed up to the grip points, and the container is then released. A second grouting step then completes the installation. If the rail head is gripped, there may be some relaxation of the shape of the container, so that once it has been grouted (or fixed using a different method) into place, the desired retention characteristics of the rail may not be maintained. Thus, the existing installation methods also do not facilitate, to the degree required for well engineered track, the holding of the rail with the ideal force at all positions around its surface and along its length.
  • the support structure is fixed to the container such that the support structure does not impede any grout or concrete.
  • the support structure holds the container by the mounting points with sufficient strength to enable movement of the container into position. However, once the grouting has been completed (or a partial grouting has been completed), the strength of the coupling between the support structure and the container can be overcome by lifting the support structure fixing points 46. Additional fixing devices could be used, such as clips, bolts etc, if desired.
  • the resilient layer is clipped into place in the manner explained above, and the rail is inserted as a separate operation.
  • the support structure comprises a lid 50 which closes the top open part of the container 22.
  • a bracing strut was used.
  • the lid in addition to giving the required spacing between the lateral side walls of the container 22, the lid is also shaped to correspond to the shape of the top of an inserted rail, so that the lid can be used for positioning in the same way that the rail itself would be used in previous installation methods.
  • the lid has a portion 52 which corresponds in position to the position of a portion of the rail when inserted into the container 22. This lid portion is then used as a reference point for the step of moving the container to a desired position.
  • the lid also has additional support elements 54, and these can be used for automated positioning of the container assembly. Any fixings suitable for the positioning equipment can be provided.
  • Figure 7 shows the rail container arrangement of Figure 5 with the lid 50 and base 22 separated.
  • the invention enables a rail support system to be set accurately in place and enables the position to be checked prior to final casting the support system, without the presence of the rail such that when the rail is later installed it has the required alignment tolerances.
  • the space for the rail and resilient pad can be consistently and accurately pre-defined, without the need to apply compressive forces at the alignment stage, which can be required with the rail in position.
  • bracing strut or lid designs and dimensions can be used to change the horizontal grip or pre compression on the rail when it is inserted. This enables the characteristics of the installation to be varied at different points, to suit local specific requirements, while still ensuring the rail can be inserted and removed.
  • Standard rail gauging equipment can be used for the positioning of the container, in particular by providing lid reference points corresponding to the rail.
  • the invention enables the alignment and fixing a container which has a significantly lower weight per unit length and a greater stiffness to weight ratio. This requires less force and less complexity of handling equipment than with the rail in place.
  • the rail installation can be a later event when it can be done quickly, efficiently and with cost effective equipment designed for that purpose as the alignment will already be preset.
  • the supporting and gripping facility 54 on the lid enables the use of lightweight automated equipment to effect container installation. Long lengths of container can be supported and aligned by automated and mechanical means at one time making rapid speed and low cost installation possible. The rail alignment will also remain throughout the life of the rail as it is set by the container installation.
  • the alignment of the container through joints between consecutive lengths can be kept smooth by staggering the cover joints and the container joints so that they do not coincide, with or without the need for connector pieces.
  • Resetting of the alignment after rail removal and replacement may be avoided as the alignment remains permanently fixed and within the allowable tolerances. No time is lost setting up the alignment for subsequent rail insertions. If there is damage to the container or grout, resetting of the assembly can be performed uising the same equipment as used for the original installation.
  • the rail can be removed and replaced from the installation without any need for adjustment of any fixings, as the lateral pre compression of the resilient pad remains consistent and correct along its length.
  • the cover can be reused for different installations, and does not therefore represent a significant additional cost item for the installation.
  • the rail can slip through the pad or the pad through the container to ensure no damage occurs to the pad or container.
  • the container (shell) is positioned before insertion of the resilient pad and rail.
  • the resilient pad may be installed with the container if desired, for example with the side walls of the resilient pad pushed inwardly to reveal the mounting points.
  • Figure 8 shows another example of rail track arrangement in which the rail 20 has a channel with a substantially level top surface on each side.
  • This example also shows the mounting points 30 located at an inner side of the top region of each side wall of the container.
  • the container and cover may be straight, and they could be bent around curves when installed.
  • the closed form of the lid (as clearly seen in Figure 7 ) prevents buckling when the lid is gently deformed into the desired radius of curvature.
  • the support structure (lid) may provide different spacing between the side walls of the container around bends, and also the resilient layer may be designed differently for different curves, or for other differences which affect the load to be experienced.
  • different lid designs may be used and/or different resilient layer designs for different radii of curvature.
  • the resilient layer may be provided in relatively short lengths, for example 2m.
  • the invention thus provides an installation method and apparatus enabling this continuously variable track geometry.
  • the support structure which is used to hold the container in place during fixing, may be an integrated part of the concreting/grouting apparatus.
  • the mounting points may provide the further function of alignment between container sections, for example they may be designed to accommodate a trace heating cable or a clip, in order to maintain alignment through container joints (whether or not a cover is present).
  • the rail has been shown as a single metal item.
  • the substantially rectangular outer shape may be defined by an I-beam shaped metal rail together with inserts which convert the I-beam shape into a rectangular shape. These inserts may also perform a damping function as well as providing the desired shape for snap fitting of the rail in the container.
  • the container arrangement is grouted into a channel in a concrete base which has previously been installed.
  • the container arrangement can be mounted on a discontinuous base such as sleepers, for example a discontinuous steel base.
  • a further alternative is for the concrete base to be provided as part of the installation process, so that the container arrangement is held by the support structure (the lid) for a one-pour concreting operation which defines the full support structure around the container. The position of the container can be verified by the support structure even when a lower part of the container has no easily accessible reference points.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Bridges Or Land Bridges (AREA)
  • Railway Tracks (AREA)
  • Chain Conveyers (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Electric Cable Arrangement Between Relatively Moving Parts (AREA)
  • Linear Motors (AREA)
  • Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
EP06755626A 2005-07-19 2006-06-26 Method and arrangement for rail track fixing Not-in-force EP1904683B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0514786A GB2428444A (en) 2005-07-19 2005-07-19 Rail track arrangement and installation
PCT/GB2006/002340 WO2007010180A1 (en) 2005-07-19 2006-06-26 Method and arrangement for rail track fixing

Publications (2)

Publication Number Publication Date
EP1904683A1 EP1904683A1 (en) 2008-04-02
EP1904683B1 true EP1904683B1 (en) 2010-02-10

Family

ID=34897456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06755626A Not-in-force EP1904683B1 (en) 2005-07-19 2006-06-26 Method and arrangement for rail track fixing

Country Status (7)

Country Link
US (1) US20110049255A1 (zh)
EP (1) EP1904683B1 (zh)
CN (1) CN101297081B (zh)
AT (1) ATE457385T1 (zh)
DE (1) DE602006012186D1 (zh)
GB (1) GB2428444A (zh)
WO (1) WO2007010180A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160083098A1 (en) * 2014-09-24 2016-03-24 Gulfstream Aerospace Corporation Aircraft and seat track assemblies for vibration isolation of floor mounted components
US11214374B2 (en) * 2016-08-01 2022-01-04 Gulfstream Aerospace Corporation Seat track assemblies for vibration isolation of floor mounted components
GB201702558D0 (en) * 2017-02-16 2017-04-05 Embedded Rail Tech Ltd Rail installation
CN108049260B (zh) * 2017-12-15 2024-04-26 上海工程技术大学 一种充填式调节垫板
GB202015239D0 (en) * 2020-09-25 2020-11-11 Embedded Rail Tech Limited Positioning device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8711451U1 (de) * 1987-08-24 1988-12-22 Phoenix Ag, 2100 Hamburg Elastisches Stützlager für Rillen- oder Blockschienen
DE8807195U1 (de) * 1988-06-01 1988-09-15 Trelleborg Gummiwerke GmbH, 2351 Wasbek Schiene für Schienenfahrzeuge
US5513797A (en) * 1989-08-26 1996-05-07 Lesley; Lewis Installation of rail tracks in roadways
GB2272011B (en) * 1992-10-28 1996-05-22 Charles Penny Method for securing in position a tramway or railway rail
DE4427237A1 (de) * 1994-08-02 1996-02-08 Hermann Ortwein Unterbau für ein Gleis für Schienenfahrzeuge
PT1017906E (pt) * 1997-09-26 2004-04-30 Phoenix Ag Sistema de carris
RO120081B1 (ro) * 1998-04-15 2005-08-30 Phoenix Aktiengesellschaft Sistem de fixare a şinei de suprafaţă pentru tramvai
GB9811591D0 (en) * 1998-05-30 1998-07-29 Penny Charles Railway or tramway rail and rail fastening system
WO2003012203A2 (en) 2001-08-02 2003-02-13 Balfour Beatty Plc Rail arrangement
WO2003018912A1 (en) 2001-08-23 2003-03-06 Hyperlast Limited Method of making rail support assemblies
GB2379701A (en) * 2001-09-17 2003-03-19 Balfour Beatty Plc Rail installation

Also Published As

Publication number Publication date
GB0514786D0 (en) 2005-08-24
DE602006012186D1 (de) 2010-03-25
ATE457385T1 (de) 2010-02-15
EP1904683A1 (en) 2008-04-02
WO2007010180A1 (en) 2007-01-25
US20110049255A1 (en) 2011-03-03
GB2428444A (en) 2007-01-31
CN101297081B (zh) 2011-09-07
CN101297081A (zh) 2008-10-29

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