EP3591119A1 - Procédé et système de renouvellement d'une plateforme de voie ferrée - Google Patents
Procédé et système de renouvellement d'une plateforme de voie ferrée Download PDFInfo
- Publication number
- EP3591119A1 EP3591119A1 EP19183796.2A EP19183796A EP3591119A1 EP 3591119 A1 EP3591119 A1 EP 3591119A1 EP 19183796 A EP19183796 A EP 19183796A EP 3591119 A1 EP3591119 A1 EP 3591119A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- longitudinal cavity
- tracks
- continuous longitudinal
- resinous material
- horizontal layer
- 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.)
- Granted
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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
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
- E01B27/04—Removing the ballast; Machines therefor, whether or not additionally adapted for taking-up ballast
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
- E01B27/06—Renewing or cleaning the ballast in situ, with or without concurrent work on the track
Definitions
- This invention relates to a method for the rehabilitation of the base of a railway line.
- the invention relates to a method for the rehabilitation of the base of a railway line having a horizontal layer of compact material positioned below the tracks.
- This type of construction is used, for example, in some tunnels with a length of more than 2000 metres on European railway lines in which, also with the aim of making the tunnel suitable for use by vehicles with rubber tyres, such as rescue vehicles, the stone ballast has been eliminated.
- a compact solid layer advantageously made of bituminous mortar, is normally interposed between the base foundation and the pre-compressed reinforced concrete platforms is normally interposed, designed to support and regularise the contact between the two above-mentioned components, as well as absorbing the stresses of the railway loads.
- bituminous mortar is exposed to a deterioration which is sometimes even rapid.
- the only known method for overcoming the problem of the deterioration of the bituminous mortar layer consists in removing it after removal of the railway tracks and the removal of the pre-compressed reinforced concrete platforms which overly the layer of bituminous mortar. This operation, as well as being particularly onerous in operational terms, is sometimes difficult to perform on account of the long railway traffic stoppage which it requires.
- the aim of this invention is to overcome the drawbacks of the prior art by means of a method for rehabilitation of the base of the railway line which allows the effectiveness of the compact solid layer interposed between the base foundation and the pre-compressed reinforced concrete platforms to be restored.
- a further aim of the invention is to provide a method for rehabilitating the base of the railway line which is able to limit the necessary intervention times.
- Another aim of the invention is to provide a method for rehabilitating the base of the railway line which allows the operations to be performed at the site to be simplified.
- the reference numeral 1 denotes in its entirety a railway line of the type comprising a base foundation 2 made of reinforced concrete and a plurality of pre-compressed reinforced concrete platforms 3, positioned in succession on the base foundation 2.
- the railway line 1 also comprises tracks 4 which are fixed to the above-mentioned platforms 3 by means of respective clips 5 of known type.
- the tracks 4 extend longitudinally along a first predetermined direction D1.
- a horizontal layer 6 of compact material is interposed between the base foundation 2 and the pre-compressed reinforced concrete platforms 3.
- the above-mentioned horizontal layer 6 of compact material has a thickness of several centimetres.
- the material with which the horizontal layer 6 is made is normally a bituminous mortar.
- the method according to the invention comprises the removal, on both sides of the tracks 4, of a continuous longitudinal portion 6a of the horizontal layer 6 of compact material.
- Figure 1 shows an apparatus 7 designed for the removal of the continuous longitudinal portion 6a of the horizontal layer 6 of compact material and comprising a carriage 8 slidable along the tracks 4 of the railway line 1, an operating head 9 for removing the compact material of the above-mentioned horizontal layer 6, the operating head 9 having a blade 10 having a substantially flat extension.
- the apparatus 7 designed for removing the above-mentioned continuous longitudinal portion 6a forms the object of a parallel patent application in the name of the same Applicant to which reference should be made for completeness and it will not therefore be described in detail herein.
- the method according to the invention relates to the rehabilitation of the base of a railway line 1 having a horizontal layer 6 of compact material positioned below the tracks, and comprises, as mentioned, a step of removing, on both sides of the tracks 4, a continuous longitudinal portion 6a of the horizontal layer 6 to form a respective continuous longitudinal cavity 11, shown in Figures 2 and 3 .
- waste material is produced, not illustrated in the accompanying drawings, in the form of dust and debris of various dimensions.
- a suction step is actuated in order to remove the dust and debris.
- a suction system is located on board a suitable railway wagon which comprises one or more suction inlets, not illustrated, operated by operators in the proximity of the longitudinal cavity 11 for completely cleaning the zone processed.
- the dust and debris sucked is then accumulated in a wagon and then conveyed to the outside of the site and disposed of in accordance with the relevant regulations.
- a step of blowing pressurised air is then actuated, again close to each longitudinal cavity 11, in order to remove even the smallest traces of dust from the cavity 11.
- the removal of the dust has the aim of improving the adhesion of new resinous material in a fluid form to the walls of the cavity 11.
- the rehabilitation method according to the invention comprises the step of injecting a resinous material 12 in a fluid form in the above-mentioned longitudinal cavity 11, in such a way as to reconstitute, as described in more detail below, following hardening of the resinous material 12, the continuity of the horizontal layer 6 of compact material.
- the above-mentioned longitudinal cavity 11 thus constitutes the zone to receive new resinous material 12 in a fluid form.
- the above-mentioned spacers 20 are distributed equidistant along the railway line 1 and are configured to guarantee the stability of the overlying tracks 4.
- the main function of the spacers 20 is to guarantee, once the continuous longitudinal portions 6a of the horizontal layer 6 of comact material have been removed, the necessary stability for the tracks 4, whilst awaiting the rehabilitation of the horizontal layer 6.
- the spacers 20 are made to support the passage of trains along the railway line 1 even in the absence of the resinous material 12 for filling the cavities 11.
- the above-mentioned step of positioning the spacers 20 made of a compact material advantageously comprises the step of momentarily and locally lifting the part above said continuous longitudinal cavity 11, that is to say, the set of platforms 3 and tracks 4, for inserting the spacers 20 with interference.
- this lifting is performed locally, at the zone for inserting each spacer 20, advantageously by means of a hydraulic lift not illustrated.
- the spacers 20 define supports with mechanical properties and elasticity comparable with the hardened resinous material 12, designed for the safety of the platforms 3 made of pre-compressed reinforced concrete.
- suitable panels 13 are arranged designed to contain the resinous material 12 in a fluid form.
- the above-mentioned panels 13 are made in the form of sheets with longitudinal extension, advantageously made of aluminium or steel, having a transversal "L" section.
- the horizontal part of the L is fixed to the base foundation 3 made of reinforced concrete by means of suitable screws 14 which are suitably spaced from each other.
- the screws 14 used are of the self-tapping type, in such a way as to simplify their application.
- the sheets defining the above-mentioned panels 13 are positioned one after the other longitudinally along the first direction D1, so as to form a continuous barrier, parallel to the above-mentioned longitudinal cavity 11 made below the tracks 4 and the pre-compressed reinforced concrete platforms 3.
- the above-mentioned panels 13 are positioned at a predetermined distance d from the outer limit of the above-mentioned continuous longitudinal cavity 11, in such a way as to allow and facilitate the injection of the resinous material 12 in a fluid form inside the longitudinal cavity 11.
- the predetermined distance d is to be measured along a direction D2 transversal to the above-mentioned first direction D1.
- the step of injecting the resinous material in a liquid form is actuated, in such a way as to fill the longitudinal cavities 11, as illustrated by way of example in Figure 4 .
- the above-mentioned resinous material 12 in fluid form is advantageously obtained from two separate components.
- the above-mentioned resinous material 12 is defined by an elastic thixotropic two-component resin.
- the step for mixing the two components is actuated at the same time as the injecting step.
- a specially prepared railway carriage 15 is set up inside which respective tanks 16, 17 are placed for each of the two components of the mixture.
- the railway wagon 15 is slidably engaged on the tracks 4 of the section of railway line 1 being processed.
- Each tank 16, 17 has, at the bottom of it, a screw feeder type pushing element 18 which directs the single component of the mixture to an electronically controlled mixing unit 19.
- respective flow meters adjust the exact flow rate of each of the components of the mixture, so as to have a resinous material 12 in a fluid form at the outlet which is exactly as desired.
- the tanks 16, 17 are duplicated inside the wagon 15.
- the resinous material 12 since the resinous material 12 is injected in a fluid form, it tends to level itself and, if the filled section is on a slope, there would be the risk of a non-uniform filling of the longitudinal cavity.
- the expression "reconstruct the continuity of the layer of compact material” means that the new layer of resinous material 12 which is injected, once it has hardened, is able to withstand the loads supported by the previous horizontal layer 6 of compact material which the volume occupied.
- the mixture of resinous material 12 used to inject in the continuous longitudinal cavity 11 offers better mechanical performance levels than the pre-existing material; in particular, in terms of compression strength, a resin has been advantageously selected which guarantees the perfect withstanding of the overlying load even without considering the portion of the layer 6 of compact material between the two longitudinal portions 6a removed.
- the resinous material 12 injected has been selected in such a way as to guarantee, even only with the extension of the two lateral longitudinal portions 6a, at least the same compression strength guaranteed with the previous horizontal layer 6 in its entire extension.
- the method according to the invention achieves the preset aims and brings important advantages.
- the main advantage linked with use of the method according to the invention is due to the fact that it is possible to restore the effectiveness of the compact solid layer interposed between the base foundation and the pre-compressed reinforced concrete platforms without having to remove the tracks, thus reducing both the costs and the time connected with the operation.
- Another advantage linked to the method according to the invention is due to the fact that the different steps can also be actuated even some time apart, in the meanwhile the railway line still being used.
- the railway line 1 can withstand the passage of the trains and this advantageously allows the remaining steps to be performed also in successive stages, possibly with short interruptions to railway traffic, for example during the night.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Bridges Or Land Bridges (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI201930147T SI3591119T1 (sl) | 2018-07-03 | 2019-07-02 | Postopek in sistem za obnovo podlage železniške proge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102018000006890A IT201800006890A1 (it) | 2018-07-03 | 2018-07-03 | Metodo per il risanamento del basamento di una linea ferroviaria |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3591119A1 true EP3591119A1 (fr) | 2020-01-08 |
| EP3591119B1 EP3591119B1 (fr) | 2021-09-08 |
Family
ID=63896497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19183796.2A Active EP3591119B1 (fr) | 2018-07-03 | 2019-07-02 | Procédé et système de renouvellement d'une plateforme de voie ferrée |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3591119B1 (fr) |
| IT (1) | IT201800006890A1 (fr) |
| SI (1) | SI3591119T1 (fr) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996006979A1 (fr) * | 1994-08-31 | 1996-03-07 | Harsco Corporation | Machine degarnisseuse cribleuse a ballast |
| DE19623305A1 (de) * | 1996-06-11 | 1997-12-18 | Keller Grundbau Gmbh | Verfahren und Vorrichtung zum Ausgleich von Gleiskörpersenkungen |
| JPH11256504A (ja) * | 1998-03-16 | 1999-09-21 | East Japan Railway Co | スラブ式軌道の補修材料及び補修方法 |
| JP2002129503A (ja) * | 2000-10-25 | 2002-05-09 | East Japan Railway Co | スラブ式軌道の補修方法 |
| JP2011021355A (ja) * | 2009-07-14 | 2011-02-03 | East Japan Railway Co | モルタル掘削機 |
| CN202543744U (zh) * | 2012-02-03 | 2012-11-21 | 中铁四局集团有限公司 | 轮胎式高速铁路板式无砟轨道砂浆层剔除车 |
| JP2015168969A (ja) * | 2014-03-06 | 2015-09-28 | 株式会社アレン | スラブ式軌道の補修用型枠およびスラブ式軌道の填充層補修工法 |
-
2018
- 2018-07-03 IT IT102018000006890A patent/IT201800006890A1/it unknown
-
2019
- 2019-07-02 EP EP19183796.2A patent/EP3591119B1/fr active Active
- 2019-07-02 SI SI201930147T patent/SI3591119T1/sl unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996006979A1 (fr) * | 1994-08-31 | 1996-03-07 | Harsco Corporation | Machine degarnisseuse cribleuse a ballast |
| DE19623305A1 (de) * | 1996-06-11 | 1997-12-18 | Keller Grundbau Gmbh | Verfahren und Vorrichtung zum Ausgleich von Gleiskörpersenkungen |
| JPH11256504A (ja) * | 1998-03-16 | 1999-09-21 | East Japan Railway Co | スラブ式軌道の補修材料及び補修方法 |
| JP2002129503A (ja) * | 2000-10-25 | 2002-05-09 | East Japan Railway Co | スラブ式軌道の補修方法 |
| JP2011021355A (ja) * | 2009-07-14 | 2011-02-03 | East Japan Railway Co | モルタル掘削機 |
| CN202543744U (zh) * | 2012-02-03 | 2012-11-21 | 中铁四局集团有限公司 | 轮胎式高速铁路板式无砟轨道砂浆层剔除车 |
| JP2015168969A (ja) * | 2014-03-06 | 2015-09-28 | 株式会社アレン | スラブ式軌道の補修用型枠およびスラブ式軌道の填充層補修工法 |
Also Published As
| Publication number | Publication date |
|---|---|
| IT201800006890A1 (it) | 2020-01-03 |
| SI3591119T1 (sl) | 2022-04-29 |
| EP3591119B1 (fr) | 2021-09-08 |
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