WO2000046448A1 - Dispositif de support pour rails de voie ferree - Google Patents
Dispositif de support pour rails de voie ferree Download PDFInfo
- Publication number
- WO2000046448A1 WO2000046448A1 PCT/BE1999/000120 BE9900120W WO0046448A1 WO 2000046448 A1 WO2000046448 A1 WO 2000046448A1 BE 9900120 W BE9900120 W BE 9900120W WO 0046448 A1 WO0046448 A1 WO 0046448A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spring
- rail
- vibration
- support
- prestressing
- Prior art date
Links
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
- the present invention is in the field of mounting rail tracks. It relates more particularly to a device for fixing the rails in direct laying on a raft or on sleepers.
- Conventional rail fastening devices comprise at least one sole made of elastic material which gives elasticity to the wheel / rail assembly so that a certain isolation from the environment is obtained with respect to the vibrations produced by the dynamic forces applied. on the rails when passing vehicles.
- the first flexural resonance frequency of the wheel / rail assembly is conditioned by this dynamic stiffness of the soles.
- This resonant frequency is inversely proportional to the anti-vibration performance of the rail fastening system: a low resonant frequency gives better anti-vibration isolation than a high resonant frequency.
- the fastening function and the insulation function must be completely decoupled. This is achieved in systems of the floating slab type in which the rail supports are fixed to a slab which is itself isolated from the environment by anti-vibration pads placed between the slab and the slab (or floor). For a floating panel, the resonance frequency is between 10 and 25 Hz approximately, which ensures better anti-vibration filtration. Anti-vibration systems of this type are, however, very expensive and difficult to maintain.
- the object of the present invention is to produce devices for fastening rails in direct laying on a raft and on steel or a crosspiece in a concrete raft or in the ballast, which have anti-vibration insulation performance close to that which is obtained. with a floating slab and which at the same time ensure good stability for the rails.
- a rail support device comprising a saddle placed on an anti-vibration sole and fixed by means consisting of an elastic prestressing device arranged to apply a predetermined prestress to the anti-vibration sole. so as to limit the static deflection of the rail to a “predetermined value when a vehicle passes over the rail.
- the anti-vibration sole works in the quasi-linear behavior zone of its deflection curve.
- the operating point of the anti-vibration sole remains in the quasi-linear behavior zone.
- the prestressing force becomes very low during the passage of the wheel and the static deflections of the rail are limited while the desired anti-vibration isolation is ensured.
- the device according to the invention thus ensures, for fixing the rail, a high apparent static stiffness combined with a low dynamic stiffness.
- Another application of the device according to the invention is the installation of two curved rails, the invention making it possible to reduce the squeal noise.
- FIG. 1 shows a section through a typical rail fixing device according to the invention
- FIG. 2 shows a prestressing device according to the invention
- FIG. 3 shows a static deflection curve typical of an anti-vibration sole
- FIG. 4 shows a typical loading curve of an anti-vibration sole with a fiation device according to the invention
- FIG. 5 shows the static stiffness curve of an example of support for rail
- FIG. 6 shows the dynamic stiffness curve of an example of support for rail
- FIG. 7 shows the loading curve of the prestressing springs in a device according to the invention
- FIG. 8 shows the static loading curve of a device according to the invention
- FIG. 9 shows compression test graphs for a device according to the invention.
- FIGS. 10 to 13 illustrate the dynamic rigidities observed with a device according to the invention for four load levels on the supports for a rail sample fixed with a device according to the invention.
- a rail support device comprising a base plate 11 fixed in a concrete slab or a crosspiece (not shown) by bolts
- the insert 13 is used to level the head of the fixing nuts 12 and the reliefs of the base plate 11.
- the insert 15 serves to cover the openings in the insert
- an anti-vibration sole 17 having dimensions chosen as a function of the natural frequency of the track and on the anti-vibration sole 17 a saddle 19 is placed intended for fixing the rail.
- the reference sign 14 designates a lateral stop for the saddle and the reference sign 16 designates a lateral adjustment element.
- the saddle 19 is fixed to the base plate 11 by means of bolts, for example hammer head bolts such as the bolt 18, and prestressing devices 20 whose function is to put the anti-vibration sole 17 in prestressed condition.
- bolts for example hammer head bolts such as the bolt 18, and prestressing devices 20 whose function is to put the anti-vibration sole 17 in prestressed condition.
- the prestressing device 20 is shown on a larger scale in FIG. 2.
- this device 20 comprises an integrated set of two springs 21 and 23: the spring 21 is chosen with a lower rigidity than that of the spring 23 which is arranged around the first.
- the spring 21 has for example a rigidity of 1800 N / cm while the spring 23 has for example a rigidity of 50 to 150 kN / cm.
- the spring 21 is wrapped in a sheet metal cap 35 to facilitate the adjustment of the preload and the return of the spring of greater rigidity 23.
- the assembly is retained between two shoulder washers 27 and 29.
- the spring 23 is completely free of prestress when passing a wheel on the rail. At this time, the spring 23 therefore does not contribute to the dynamic stiffness of the wheel / rail / fixing system assembly.
- the anti-vibration soles have a static deflection curve as shown in FIG. 3. On this curve we distinguish three zones:
- the prestressing device is adjusted by taking account first of all of the performance in anti-vibration isolation (resonance frequency wheel / rail) requested. These performances generally impose a low dynamic stiffness. From this dynamic stiffness, the required static stiffness is deduced, which is a function of the material of which the anti-vibration sole is made. With this static stiffness, we generally obtain static displacements of the heavy rail, which are not tolerated.
- the prestressing device is then adjusted so that it applies a prestressing to the anti-vibration soleplate such that the difference between the displacement of the rail before prestressing and the displacement of the rail after prestressing remains less than the displacement of the tolerated rail (in general 3 mm).
- the sole is chosen so that it works in the quasi-linear zone of its deflection curve with the preload and the additional load which is applied to it during the passage of a wheel.
- a dynamic stiffness of the anti-vibration soleplate in the fastening system is required of approximately 10 kN / mm (determined by the finite element method ).
- a deflection of the rail of 4.5 mm is obtained (FIG. 3 ).
- FIG. 4 shows a typical loading curve of an anti-vibration sole suitable for an axle load of approximately 100 to 120 kN, for example.
- the prestress applied by the device 20 is then chosen to be equal to this minimum load.
- the load can vary between 20 and 30 kN.
- the pre-stress chosen (20 kN for example) fixes the minimum operating point of the system, for which a rail deflection of ⁇ 4.5 mm occurs. This prestressing is carried out for example with two springs 23 of 10 kN / mm which are both compressed by 1 mm.
- the two prestressing springs 23 in the prestressing device 20 according to the invention are completely released during the passage of the wheel.
- the invention thus makes it possible to achieve optimal operating conditions on anti-vibration supports, that is to say a very low dynamic rigidity while limiting the rail deflection to the tolerated value, for example ⁇ 3 mm (instead ⁇ 8 mm).
- Tests were carried out on a section of rail approximately 6 m long with seven fixing points equipped with a prestressing device according to the invention in order to verify the static and dynamic behavior of the assembly.
- the supports used are of the SYL.S65.XS / 300.180.50 type.
- the curve of FIG. 5 shows that the static rigidity of the sample below a load of 15.0 kN is on average 3600 N / mm and the deflection under a load of 25 kN is approximately 8 mm.
- the curve of FIG. 6 shows that the dynamic rigidity is of the order of 5600 N / m.
- the maximum compression force measured is approximately 25 kN.
- the prestressing has been set at 15 kN.
- FIGS. 8 to 13 illustrate the results of the tests carried out after assembly of the system.
- the curve in FIG. 8 illustrates the static loading of the system. It can be seen that the static rigidity is of the order of: 8600 N / mm for a load lower than 15.0 kN 3600 N / mm for a load higher than 15.0 kN.
- FIG. 3 indeed shows that, for a rise to 25 kN, the deflection is of the order of 3 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
- Vibration Prevention Devices (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT99944178T ATE282735T1 (de) | 1999-02-05 | 1999-09-17 | Tragvorrichtung für eisenbahnschienen |
EP99944178A EP1068396B1 (fr) | 1999-02-05 | 1999-09-17 | Dispositif de support pour rails de voie ferree |
DE69921978T DE69921978T2 (de) | 1999-02-05 | 1999-09-17 | Tragvorrichtung für eisenbahnschienen |
US09/652,239 US6325301B1 (en) | 1999-02-05 | 2000-08-31 | Track support system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9900083A BE1012466A5 (fr) | 1999-02-05 | 1999-02-05 | Dispositif de support pour rails de voie ferree. |
BE9900083 | 1999-02-05 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/652,239 Continuation-In-Part US6325301B1 (en) | 1999-02-05 | 2000-08-31 | Track support system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000046448A1 true WO2000046448A1 (fr) | 2000-08-10 |
Family
ID=3891744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BE1999/000120 WO2000046448A1 (fr) | 1999-02-05 | 1999-09-17 | Dispositif de support pour rails de voie ferree |
Country Status (7)
Country | Link |
---|---|
US (1) | US6325301B1 (fr) |
EP (1) | EP1068396B1 (fr) |
AT (1) | ATE282735T1 (fr) |
BE (1) | BE1012466A5 (fr) |
DE (1) | DE69921978T2 (fr) |
ES (1) | ES2230885T3 (fr) |
WO (1) | WO2000046448A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10052534A1 (de) * | 2000-10-23 | 2002-04-25 | Hilti Ag | Schienenanbinder |
BE1015814A5 (fr) * | 2003-12-10 | 2005-09-06 | Vanhonacker Patrick | Systeme de pose de voie ferree et traverse pour un tel systeme. |
DE202006016616U1 (de) | 2006-06-20 | 2007-01-04 | Sedra Gmbh | Kontinuierliche elastische Schienenlagerung |
DE102006028740B4 (de) * | 2006-06-20 | 2015-02-26 | Sedra Gmbh | Kontinuierliche elastische Schienenlagerung |
WO2012024515A1 (fr) * | 2010-08-18 | 2012-02-23 | Encore Rail Systems, Inc. | Procédés de construction de voies de chemin de fer sans traverses |
US9151309B2 (en) * | 2010-09-02 | 2015-10-06 | Thomas & Betts International Llc | Expansion clamp |
CN104251238A (zh) * | 2013-06-28 | 2014-12-31 | 鸿富锦精密电子(天津)有限公司 | 风扇模组及其减震件 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2421502A (en) * | 1944-01-08 | 1947-06-03 | Vincel Paul Hayes | Concrete spring tie |
DE29619480U1 (de) * | 1996-11-11 | 1997-01-09 | Hilti Ag | Schienenbefestigung |
FR2737511A1 (fr) * | 1995-08-02 | 1997-02-07 | Regie Autonome Transports | Dispositif pour la pose d'un rail sur une assise en beton |
WO1997042376A1 (fr) * | 1996-05-03 | 1997-11-13 | Patrick Vanhonacker | Procede et dispositif de fixation de rails de voie ferree |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3512987A1 (de) * | 1985-04-11 | 1986-10-16 | Phoenix Ag, 2100 Hamburg | Elastisches schienenlager |
US4844338A (en) * | 1986-12-05 | 1989-07-04 | Lord Corporation | Rail fastener |
US5314115A (en) * | 1992-05-27 | 1994-05-24 | Bombardier Inc. | Rail cross-tie for LIM transit system |
BR9611195A (pt) * | 1995-10-20 | 1999-04-06 | Butzbacher Weichenbau Gmbh | Construção de superestrutura |
-
1999
- 1999-02-05 BE BE9900083A patent/BE1012466A5/fr not_active IP Right Cessation
- 1999-09-17 DE DE69921978T patent/DE69921978T2/de not_active Expired - Fee Related
- 1999-09-17 ES ES99944178T patent/ES2230885T3/es not_active Expired - Lifetime
- 1999-09-17 AT AT99944178T patent/ATE282735T1/de not_active IP Right Cessation
- 1999-09-17 EP EP99944178A patent/EP1068396B1/fr not_active Expired - Lifetime
- 1999-09-17 WO PCT/BE1999/000120 patent/WO2000046448A1/fr active IP Right Grant
-
2000
- 2000-08-31 US US09/652,239 patent/US6325301B1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2421502A (en) * | 1944-01-08 | 1947-06-03 | Vincel Paul Hayes | Concrete spring tie |
FR2737511A1 (fr) * | 1995-08-02 | 1997-02-07 | Regie Autonome Transports | Dispositif pour la pose d'un rail sur une assise en beton |
WO1997042376A1 (fr) * | 1996-05-03 | 1997-11-13 | Patrick Vanhonacker | Procede et dispositif de fixation de rails de voie ferree |
DE29619480U1 (de) * | 1996-11-11 | 1997-01-09 | Hilti Ag | Schienenbefestigung |
Also Published As
Publication number | Publication date |
---|---|
US6325301B1 (en) | 2001-12-04 |
BE1012466A5 (fr) | 2000-11-07 |
ATE282735T1 (de) | 2004-12-15 |
EP1068396B1 (fr) | 2004-11-17 |
DE69921978T2 (de) | 2005-11-24 |
DE69921978D1 (de) | 2004-12-23 |
ES2230885T3 (es) | 2005-05-01 |
EP1068396A1 (fr) | 2001-01-17 |
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