EP4105384A1 - Method for repairing railway sleepers for railway vehicles - Google Patents
Method for repairing railway sleepers for railway vehicles Download PDFInfo
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- EP4105384A1 EP4105384A1 EP22178588.4A EP22178588A EP4105384A1 EP 4105384 A1 EP4105384 A1 EP 4105384A1 EP 22178588 A EP22178588 A EP 22178588A EP 4105384 A1 EP4105384 A1 EP 4105384A1
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- Prior art keywords
- filling material
- joint
- rail vehicles
- railway sleepers
- vehicles according
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/20—Working or treating non-metal sleepers in or on the line, e.g. marking, creosoting
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
Definitions
- the present invention relates to a method for the rehabilitation of structural parts for rail vehicles according to the preamble of claim 1.
- railway sleepers are part of the track superstructure, which carries the rails for rail vehicles and which transmits and distributes the forces that occur under load to the track substructure.
- the rails attached to it are fixed in their position.
- concrete sleepers are used, which are cast from concrete by machine.
- ballastless tracks and a ballastless superstructure have also been known, which is referred to as "slab track”.
- This is a rail superstructure in which the ballast bed is replaced by a solid superstructure roadway made of concrete or asphalt.
- the rigid concrete sleepers are pre-assembled in a previously manufactured concrete trough or in a formwork in such a way that a grouting space is created between the bottom and the wall of the concrete trough (formwork).
- the trough is often lined with elastomeric foam.
- the sleepers are brought into their final installation position, which is very time-consuming, however, since they have to be elevated and finely adjusted for this purpose.
- the adjustment is necessary so that the track laying to be carried out later is possible in accordance with the accuracy requirements.
- the cavity below the sleeper is filled with a suitable grouting concrete and the sleeper is embedded up to about half of its overall height.
- suitable grouting concrete There are different systems for slab track construction, for example Rheda 2000, Züblin system, Bögel system, etc.
- the slab track has the advantage that it offers better track geometry stability at high speeds, so maintenance costs are significantly lower. It is also more weather resistant.
- the slab track systems have the disadvantage of being more complex to assemble and involve significantly higher investments compared to a classic superstructure, because the position of the rail fastenings must be precisely measured when the concrete bed is poured. High demands are placed on the stability of the subsoil, as greater correction options are no longer possible with the rail fastening system.
- the EP 2 690 218 A2 describes such a method for repairing cracks in concrete sleepers by injecting a filling material, the crack or cracks being at least partially sealed with a dam in the upper area of the concrete sleeper.
- a crack analysis is carried out and the crack is then sealed in such a way that the sealing is applied in strips along the crack.
- An open area is then created in order to inject the filling material into the crack using a low-pressure pump.
- the method according to the invention comprises the identification of cavities or air bubbles in the component section to be processed.
- This is preferably a railway sleeper.
- Such cavities occur in particular below the threshold.
- Damaged sleepers are preferably identified by visual inspection, camera-assisted methods or ultrasound treatment.
- a joint along the circumference of the sleeper to be treated is pretreated.
- the joint is thus prepared directly in the border area of the sleeper to the underlying reinforced concrete slab.
- the circumferential furrow is preferably produced by grinding, needling, blasting or brushing.
- the joint is then preferably brushed clean.
- inlet openings for the introduction of a filling material and outlet openings for air removal are made in the joint area and the joint is sealed with a sealing material. Due to the insulation, the joint forms a kind of collar that consists of the insulation.
- the inlet openings are preferably arranged opposite the outlet openings on the longitudinal side of the sleeper. The distances between the respective entry openings and the exit openings, the width and height as well as the shape of the damming depend on the respective sleeper type and the track construction.
- the inlet openings for the filling material and the outlet openings for air evacuation are made on the longitudinal sides of the sleeper either before or after the insulation is formed.
- the aim is now to expel the air below the sleepers and to fill the cavities with a filling material. Due to the insulation, the joint is completely closed and is only open via the entrances in the form of the entry openings.
- a compressible filling material is injected under pressure into the inlet openings formed at the joint. By injecting the filling material, the air in the cavities is displaced and directed to the outlet openings for air removal. The venting of the cavities is complete when the excess filling material emerges from the outlet openings. If this is the case, it can be assumed that all cavities are sufficiently filled with filling material.
- the outlet openings attached to the joint are closed. Further filling material is then added under high pressure via the inlet openings, as a result of which the filling material is pressed.
- the filling material can then harden.
- the injection pressure is preferably between 3 and 18 bar, preferably between 8 and 16 bar, preferably about 12 bar.
- the subsequent compression of the filling material takes place at a compression pressure of preferably between 3 and 18 bar, preferably between 8 and 16 bar, preferably about 12 bar.
- the filling material is preferably injected using a high-pressure pump.
- the inlet openings for the filling material and/or the outlet openings for air removal are injection packers, angular packers, hose connectors or compression fittings.
- the damming material is preferably a plastic, a synthetic resin, a plastic-modified mortar, a reactive resin or a polymer.
- Preferred polymers are silicone, polysulphide, acrylate or PMMA or purely mineral-based mortar materials.
- the filling material is preferably a reaction resin, synthetic resin, two-component adhesive, epoxy resin, polyurethane resin, polyester resin, silicone resin or another chemically hardenable adhesive or resin or mineral-based injection materials.
- the choice of the insulation material, the filling material and the distances between the entry openings and the exit openings depend on the respective damage pattern and the respective type of track.
- the method according to the invention is preferably used in the slab track.
- a concrete sleeper 1 is shown with a rail arranged thereon, which is bordered by spring elements 3 .
- the subsoil is preferably a reinforced concrete slab such as is used in "slab track" construction.
- the joint along the concrete sleeper is first pre-treated, preferably by grinding, needling, blasting or brushing. The foot is cleaned.
- a dam is then formed in the joint processed in this way and accesses in the form of inlet openings and outlet openings are made in the dam.
- Appropriate packers are provided for this purpose, which enable injection of a synthetic resin.
- Injection packers are preferably used as packers 4 . The distances between the injection packers depend on the type of damage and can be adjusted if necessary.
- the damming preferably consists of a plastic-modified mortar, a synthetic resin, a reaction resin or sealants based on construction chemical polymers.
- a filling material for example in the form of a reactive synthetic resin
- a filling material is injected at high pressure of approx. 12 bar through the entry openings made on the longitudinal side of the concrete sleeper.
- the filling material is injected until the resin emerges from the outlet openings.
- the injection packers are then closed to remove air and new filling material is introduced through the inlet openings at an injection pressure of around 12 bar in order to compact the filling material in the cavities of the sleeper.
- the pressing process takes about 20 minutes.
- the filling material can be supplied, for example, via pipelines or hoses. Hoses or pipes can also be used for the air discharge.
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- Machines For Laying And Maintaining Railways (AREA)
Abstract
Die vorliegende Erfindung betrifft ein Verfahren zur Sanierung von Bahnschwellen für Schienenfahrzeuge, umfassend die Schritte:
a. Identifizieren von Hohlräumen oder Luftblasen in einer Schwelle,
b. Ausbilden einer Fuge entlang des Umfangs der zu behandelnden Schwelle,
c. Anbringen von Eintrittsöffnungen für das Einbringen eines Füllmaterials und Austrittsöffnungen zur Luftabführung im Fugenbereich und Verdämmung der Fuge mit einem Verdämmungsmaterial,
d. Injizieren eines verpressbaren Füllmaterials in die an der Fuge ausgebildeten Eintrittsöffnungen unter Druck, bis dieses an den Austrittsöffnungen der Fuge austritt,
e. Verschließen der an der Fuge angebrachten Austrittsöffnungen,
f. Verpressen des Füllmaterials in der Schwelle durch weitere Injektion des Füllmaterials über die Eintrittsöffnungen unter Druck, Aushärten lassen des Füllmaterials.
The present invention relates to a method for renovating railway sleepers for rail vehicles, comprising the steps:
a. identifying voids or air bubbles in a sleeper,
b. forming a joint along the perimeter of the sleeper to be treated,
c. Installation of inlet openings for the introduction of a filling material and outlet openings for air removal in the joint area and sealing of the joint with a sealing material,
i.e. Injecting a compressible filling material under pressure into the inlet openings formed on the joint until it emerges at the outlet openings of the joint,
e. Closing the outlet openings attached to the joint,
f. Injecting the filling material into the sleeper by further injecting the filling material through the inlet openings under pressure, allowing the filling material to harden.
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Sanierung von Bauwerksteilen für Schienenfahrzeuge gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a method for the rehabilitation of structural parts for rail vehicles according to the preamble of
Bahnschwellen gehören zu einem Teil des Gleisoberbaus, der die Schienen für Schienenfahrzeuge trägt und der die bei Belastung auftretenden Kräfte auf den Gleisunterbau überträgt und verteilt. Dabei werden die darauf befestigten Schienen in ihrer Lage fixiert. Üblicherweise kommen Betonschwellen zum Einsatz, die maschinell aus Beton gegossen werden.Railway sleepers are part of the track superstructure, which carries the rails for rail vehicles and which transmits and distributes the forces that occur under load to the track substructure. The rails attached to it are fixed in their position. Usually, concrete sleepers are used, which are cast from concrete by machine.
Seit Mitte der 90er Jahre sind auch schotterlose Gleise bzw. ein schotterloser Oberbau bekannt, der als "Feste Fahrbahn" bezeichnet wird. Dabei handelt es sich um einen Schienenoberbau, bei dem das Schotterbett durch einen festen Oberbau-Fahrbahnstrang aus Beton oder Asphalt ersetzt ist. Hierfür werden die starren Betonschwellen in einen zuvor hergestellten Betontrog oder in eine Schalung derart vormontiert, dass ein Vergussraum zwischen Sohle und Wand des Betontrogs (Schalung) entsteht. Zur Vermeidung von Körperschall wird der Trog häufig mit elastomerem Schaumstoff ausgekleidet. Die Schwellen werden in ihre endgültige Einbauposition gebracht, was jedoch sehr aufwändig ist, da sie hierfür aufgeständert und feinjustiert werden müssen. Die Justierung ist erforderlich, damit die später durchzuführende Gleisverlegung den Exaktheitsansprüchen entsprechend möglich ist. Nach exakter Fixierung des Gleiskörpers wird der Hohlraum unterhalb der Schwelle mit einem dafür geeigneten Vergussbeton verfüllt und die Schwelle bis ca. zur Hälfte ihrer Bauhöhe eingebunden. Bei der Bauart zur Festen Fahrbahn gibt es unterschiedliche Systeme, beispielsweise Rheda 2000, System Züblin, System Bögel, etc.Since the mid-1990s, ballastless tracks and a ballastless superstructure have also been known, which is referred to as "slab track". This is a rail superstructure in which the ballast bed is replaced by a solid superstructure roadway made of concrete or asphalt. For this purpose, the rigid concrete sleepers are pre-assembled in a previously manufactured concrete trough or in a formwork in such a way that a grouting space is created between the bottom and the wall of the concrete trough (formwork). To avoid structure-borne noise, the trough is often lined with elastomeric foam. The sleepers are brought into their final installation position, which is very time-consuming, however, since they have to be elevated and finely adjusted for this purpose. The adjustment is necessary so that the track laying to be carried out later is possible in accordance with the accuracy requirements. After the track body has been precisely fixed, the cavity below the sleeper is filled with a suitable grouting concrete and the sleeper is embedded up to about half of its overall height. There are different systems for slab track construction, for example Rheda 2000, Züblin system, Bögel system, etc.
Die Feste Fahrbahn hat den Vorteil, dass sie eine bessere Gleislagestabilität bei hohen Geschwindigkeiten bietet, sodass die Wartungskosten deutlich geringer sind. Ferner ist sie auch witterungsbeständiger. Die Systeme zur Festen Fahrbahn haben jedoch die Nachteile einer aufwändigeren Montage und sind mit deutlich höheren Investitionen im Vergleich zu einem klassischen Oberbau verbunden, denn die Lage der Schienenbefestigung muss bereits beim Gießen der Betonbettung präzise eingemessen sein. Dabei werden hohe Anforderungen an die Stabilität des Untergrundes gestellt, da größere Korrekturmöglichkeiten beim Schienenbefestigungssystem nicht mehr möglich sind.The slab track has the advantage that it offers better track geometry stability at high speeds, so maintenance costs are significantly lower. It is also more weather resistant. However, the slab track systems have the disadvantage of being more complex to assemble and involve significantly higher investments compared to a classic superstructure, because the position of the rail fastenings must be precisely measured when the concrete bed is poured. High demands are placed on the stability of the subsoil, as greater correction options are no longer possible with the rail fastening system.
Der klassische Schotteroberbau kann den bei häufigen Zugüberfahrten auftretenden Kräften nicht immer ausreichend standhalten und es kommt nach einiger Zeit häufig zu Verschiebungen des Oberbaus, was letztendlich zu Gleislagefehlern führt. Aus Sicherheitsgründen müssen solche Stellen deshalb mit niedrigen Fahrgeschwindigkeiten gefahren werden.The classic ballasted superstructure cannot always adequately withstand the forces that occur during frequent train crossings, and displacements often occur after a while of the superstructure, which ultimately leads to track geometry errors. For safety reasons, such places must therefore be driven at low driving speeds.
Nicht nur der klassische Schotteroberbau, sondern auch die Feste Fahrbahn ist bei einer Zugüberfahrt enormen Belastungen ausgesetzt. Die Bahnschwellen schwingen beim Überfahren und geben bei Beaufschlagung mit Kraft nach. Dabei schwingt die überfahrene Schwelle von oben nach unten. Benachbarte Schwellen müssen die Last aufnehmen. Problematisch wird die Situation bei den Schwellen, bei denen sich Hohlräume an der Unterseite der Schwelle gebildet haben. Solche Hohlräume umfassen häufig Lufteinschlüsse. Diese führen dazu, dass mit der Zeit Wasser eindringt, welches bei Temperaturen unter 0 °C zu Eis gefriert, was zu einer Beschädigung der Schwelle führt. Auch entstehen bei einzelnen Schwellen Fugen, die nach dem Schwinden des Betons bei einer Betonschwelle einen Wassereintritt in geringen Mengen zulassen. Schließlich findet man selbst bei einem sorgfältigen Ausbetonieren des Raumes unterhalb der Betonschwellen Hohlräume, weil Luft unterhalb der Schwelle beim Betonverdichtungsvorgang oftmals nur schwer entweichen kann.Not only the classic ballasted superstructure, but also the slab track is exposed to enormous loads when a train passes over it. The railway sleepers vibrate when driven over and give way when force is applied. The crossed threshold swings from top to bottom. Neighboring sleepers must take the load. The situation becomes problematic with the sleepers, where cavities have formed on the underside of the sleeper. Such cavities often include air pockets. Over time, these lead to water penetrating, which freezes to ice at temperatures below 0 °C, which leads to damage to the sleeper. There are also gaps in individual sleepers that allow small amounts of water to enter after the concrete has shrunk. After all, cavities can be found even if the space below the concrete sleepers is carefully concreted, because air underneath the sleeper can often only escape with difficulty during the concrete compaction process.
Der Schadeneintritt durch über die Fuge beziehungsweise in die Hohlräume eingedrungenes Wasser macht es erforderlich, dass die Schwelle aus Sicherheitsgründen ausgetauscht werden muss. Bei der Festen Fahrbahn kommt hinzu, dass die Stahlbetonplatte Risse erleiden kann, die ebenfalls zu einem Wassereintritt von oben in die Konstruktion und damit in vorhandene Hohlräume unterhalb der Schwelle führen können. Bei den betroffenen Schwellen findet man deshalb häufig auch Abplatzungen um die Schwellen herum sowie die erwähnten Hohlräume unterhalb der Schwellen, die dazu führen können, dass die fest eingebundenen Schwellen bei Belastung, das heißt bei Überfahrt eines Zuges, spürbare Bewegungen aufweisen. Dazu kommen nutzungsbedingte und umweltbedingte Schäden an der Betonkonstruktion. Solche Schadensbilder sind mit den herkömmlichen Verfahren entweder nicht oder nur mit erheblichem Aufwand zu sanieren.If damage occurs due to water penetrating through the joint or into the cavities, it is necessary for the threshold to be replaced for safety reasons. In the case of the slab track, there is also the fact that the reinforced concrete slab can suffer cracks, which can also lead to water ingress from above into the structure and thus into existing cavities below the sleeper. In the case of the affected sleepers, spalling is therefore often found around the sleepers as well as the cavities mentioned below the sleepers, which can lead to the fixed sleepers exhibiting noticeable movements under load, i.e. when a train passes over them. In addition, there is usage-related and environmental damage to the concrete structure. Damage patterns of this kind cannot be repaired using conventional methods, or can only be repaired with considerable effort.
Die
Ein ähnliches Verfahren beschreibt auch die
Die genannten Verfahren sind nur für eine Sanierung von Betonschwellen, nicht aber für die Instandsetzung von Hohlräumen oder Lufteinschlüssen um die Schwellen herum geeignet. Dies liegt unter anderem daran, dass die verwendeten Drücke keine Verpressung des Injektionsmaterials zulassen.The methods mentioned are only suitable for renovating concrete sleepers, but not for repairing cavities or air pockets around the sleepers. One of the reasons for this is that the pressures used do not allow the injection material to be compressed.
Vor diesem Hintergrund ist es Aufgabe der vorliegenden Erfindung, ein alternatives und zugleich verbessertes Verfahren für die Sanierung von oben genannten Bauteilbereichen für Schienenfahrzeuge bereitzustellen.Against this background, it is the object of the present invention to provide an alternative and at the same time improved method for the rehabilitation of the above-mentioned component areas for rail vehicles.
Gelöst wird diese Aufgabe durch ein Verfahren mit den Merkmalen des Anspruchs 1.This problem is solved by a method with the features of
Das erfindungsgemäße Verfahren umfasst in einem ersten Schritt das Identifizieren von Hohlräumen oder Luftblasen in dem zu bearbeitenden Bauteilabschnitt. Vorzugsweise handelt es sich hierbei um eine Bahnschwelle. Solche Hohlräume treten insbesondere unterhalb der Schwelle auf. Das Identifizieren von beschädigten Schwellen erfolgt vorzugsweise durch visuelle Begehung, kameragestützte Verfahren oder Ultraschallbehandlung.In a first step, the method according to the invention comprises the identification of cavities or air bubbles in the component section to be processed. This is preferably a railway sleeper. Such cavities occur in particular below the threshold. Damaged sleepers are preferably identified by visual inspection, camera-assisted methods or ultrasound treatment.
In einem weiteren Verfahrensschritt erfolgt die Vorbehandlung einer Fuge entlang des Umfangs der zu behandelnden Schwelle. Die Fuge wird somit unmittelbar im Grenzbereich der Schwelle zu der darunterliegenden Stahlbetonplatte vorbereitet. Vorzugsweise erfolgt das Erzeugen der umlaufenden Furche durch Schleifen, Nadeln, Strahlen oder Bürsten. Die Fuge wird vorzugsweise anschließend sauber ausgebürstet.In a further process step, a joint along the circumference of the sleeper to be treated is pretreated. The joint is thus prepared directly in the border area of the sleeper to the underlying reinforced concrete slab. The circumferential furrow is preferably produced by grinding, needling, blasting or brushing. The joint is then preferably brushed clean.
In einem weiteren Verfahrensschritt werden Eintrittsöffnungen für das Einbringen eines Füllmaterials und Austrittsöffnungen zur Luftabführung im Fugenbereich angebracht und die Fuge mit einem Verdämmungsmaterial verdämmt. Durch die Verdämmung bildet die Fuge eine Art Kragen, der aus der Verdämmung besteht. Die Eintrittsöffnungen sind vorzugsweise gegenüberliegend den Austrittsöffnungen an der Längsseite der Bahnschwelle angeordnet. Die Abstände der jeweiligen Eintrittsöffnungen und der Austrittsöffnungen, die Breite und Höhe sowie Form der Verdämmung sind abhängig von der jeweiligen Schwellenart und der Gleiskonstruktion. Die Eintrittsöffnungen für das Füllmaterial und die Austrittsöffnungen zur Luftabfuhr werden entweder vor oder nach Ausformen der Verdämmung an den Längsseiten der Schwelle angebracht.In a further process step, inlet openings for the introduction of a filling material and outlet openings for air removal are made in the joint area and the joint is sealed with a sealing material. Due to the insulation, the joint forms a kind of collar that consists of the insulation. The inlet openings are preferably arranged opposite the outlet openings on the longitudinal side of the sleeper. The distances between the respective entry openings and the exit openings, the width and height as well as the shape of the damming depend on the respective sleeper type and the track construction. The inlet openings for the filling material and the outlet openings for air evacuation are made on the longitudinal sides of the sleeper either before or after the insulation is formed.
Ziel ist es im weiteren Verfahrensverlauf nun, die Luft unterhalb der Schwellen auszutreiben und die Hohlräume mit einem Füllmaterial auszufüllen. Durch die Verdämmung ist die Fuge vollständig geschlossen und lediglich über die Zugänge in Form der Eintrittsöffnungen offen. Um die Luft auszutreiben und die Hohlräume zu füllen, wird in einem weiteren Verfahrensschritt ein verpressbares Füllmaterial in die an der Fuge ausgebildeten Eintrittsöffnungen unter Druck injiziert. Durch das Injizieren des Füllmaterials wird die Luft in den Hohlräumen verdrängt und zu den Austrittsöffnungen zur Luftabführung geleitet. Das Entlüften der Hohlräume ist dann abgeschlossen, wenn aus den Austrittsöffnungen das überschüssige Füllmaterial heraustritt. Wenn dies der Fall ist, kann davon ausgegangen werden, dass sämtliche Hohlräume ausreichend mit Füllmaterial gefüllt sind.As the process progresses, the aim is now to expel the air below the sleepers and to fill the cavities with a filling material. Due to the insulation, the joint is completely closed and is only open via the entrances in the form of the entry openings. In order to expel the air and to fill the cavities, in a further process step, a compressible filling material is injected under pressure into the inlet openings formed at the joint. By injecting the filling material, the air in the cavities is displaced and directed to the outlet openings for air removal. The venting of the cavities is complete when the excess filling material emerges from the outlet openings. If this is the case, it can be assumed that all cavities are sufficiently filled with filling material.
Im nächsten Verfahrensschritt werden die an der Fuge angebrachten Austrittsöffnungen verschlossen. Anschließend wird weiteres Füllmaterial unter hohem Druck über die Eintrittsöffnungen gegeben, wodurch ein Verpressen des Füllmaterials erfolgt. Anschließend kann das Füllmaterial aushärten. Vorzugsweise beträgt der Injektionsdruck zwischen 3 und 18 bar, bevorzugt zwischen 8 und 16 bar, vorzugsweise etwa 12 bar. Die anschließende Verpressung des Füllmaterials erfolgt bei einem Verpressdruck von vorzugsweise zwischen 3 und 18 bar, bevorzugt zwischen 8 und 16 bar, vorzugsweise etwa 12 bar. Vorzugsweise erfolgt die Injektion des Füllmaterials durch eine Hochdruckpumpe.In the next step of the process, the outlet openings attached to the joint are closed. Further filling material is then added under high pressure via the inlet openings, as a result of which the filling material is pressed. The filling material can then harden. The injection pressure is preferably between 3 and 18 bar, preferably between 8 and 16 bar, preferably about 12 bar. The subsequent compression of the filling material takes place at a compression pressure of preferably between 3 and 18 bar, preferably between 8 and 16 bar, preferably about 12 bar. The filling material is preferably injected using a high-pressure pump.
In einer bevorzugten Ausführungsform handelt es sich bei den Eintrittsöffnungen für das Auffüllmaterial und/oder den Austrittsöffnungen zur Luftabführung um Injektionspacker, Winkelpacker, Schlauchstutzen oder Verpressnippel. Bei dem Verdämmungsmaterial handelt es sich vorzugsweise um einen Kunststoff, ein Kunstharz, einen kunststoffmodifizierten Mörtel, ein Reaktionsharz oder ein Polymer. Bevorzugte Polymere sind Silikon, Polysulfid, Acrylat oder PMMA oder auch Mörtelstoffe auf rein mineralischer Basis.In a preferred embodiment, the inlet openings for the filling material and/or the outlet openings for air removal are injection packers, angular packers, hose connectors or compression fittings. The damming material is preferably a plastic, a synthetic resin, a plastic-modified mortar, a reactive resin or a polymer. Preferred polymers are silicone, polysulphide, acrylate or PMMA or purely mineral-based mortar materials.
Bei dem Füllmaterial handelt es sich vorzugsweise um ein Reaktionsharz, Kunstharz, Zweikomponentenklebstoff, Epoxidharz, Polyurethanharz, Polyesterharz, Silikonharz oder einen anderen chemisch aushärtbaren Klebstoff oder Harz oder auch Injektionsstoffe auf mineralischer Basis.The filling material is preferably a reaction resin, synthetic resin, two-component adhesive, epoxy resin, polyurethane resin, polyester resin, silicone resin or another chemically hardenable adhesive or resin or mineral-based injection materials.
Die Wahl des Verdämmungsmaterials, des Füllmaterials sowie die Abstände der Eintrittsöffnungen und der Austrittsöffnungen hängen vom jeweiligen Schadensbild und der jeweiligen Gleisbauart ab.The choice of the insulation material, the filling material and the distances between the entry openings and the exit openings depend on the respective damage pattern and the respective type of track.
Vorzugsweise kommt das erfindungsgemäße Verfahren bei der Festen Fahrbahn zum Einsatz.The method according to the invention is preferably used in the slab track.
Die Erfindung wird in der nachfolgenden Zeichnung näher erläutert:
In
In
Nachdem die Verdämmung ausgehärtet ist, wird über die an der Längsseite der Betonschwelle eingebrachten Eintrittsöffnungen ein Füllmaterial, beispielsweise in Form eines Reaktionskunstharzes, mit hohem Druck von ca. 12 bar injiziert. Durch die Injektion des Füllmaterials entweicht die in den Hohlräumen gespeicherte Luft aus den Austrittsöffnungen auf der gegenüberliegenden Seite der Betonschwelle. Die Injektion des Füllmaterials erfolgt so lange, bis das Harz aus den Austrittsöffnungen austritt. Anschließend werden die Injektionspacker für die Luftabführung verschlossen und über die Eintrittsöffnungen erneut Füllmaterial bei einem Verpressdruck von etwa 12 bar eingebracht, um das Füllmaterial in den Hohlräumen der Schwelle zu verdichten. Der Verpressvorgang dauert etwa 20 Minuten. Das Zuführen des Füllmaterials kann beispielsweise über Rohrleitungen oder Schläuche erfolgen. Für die Luftabführung können ebenfalls Schläuche oder Rohrleitungen verwendet werden.After the tamping has hardened, a filling material, for example in the form of a reactive synthetic resin, is injected at high pressure of approx. 12 bar through the entry openings made on the longitudinal side of the concrete sleeper. By injecting the filling material, the air stored in the cavities escapes through the outlet openings on the opposite side of the concrete sleeper. The filling material is injected until the resin emerges from the outlet openings. The injection packers are then closed to remove air and new filling material is introduced through the inlet openings at an injection pressure of around 12 bar in order to compact the filling material in the cavities of the sleeper. The pressing process takes about 20 minutes. The filling material can be supplied, for example, via pipelines or hoses. Hoses or pipes can also be used for the air discharge.
Claims (11)
Applications Claiming Priority (1)
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DE102021115681.5A DE102021115681A1 (en) | 2021-06-17 | 2021-06-17 | Process for the renovation of railway sleepers for rail vehicles |
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EP4105384A1 true EP4105384A1 (en) | 2022-12-21 |
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EP22178588.4A Pending EP4105384A1 (en) | 2021-06-17 | 2022-06-13 | Method for repairing railway sleepers for railway vehicles |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10248037B3 (en) * | 2002-10-15 | 2004-05-06 | Walter - Heilit Verkehrswegebau Gmbh | Secondary treatment method for railway track with extraction of fastening bolts from sleepers, drilling of sleeper, and filling of space with synthetic resin or cement suspension |
DE102012202877A1 (en) | 2012-02-24 | 2013-08-29 | CSE Construction GmbH | Railway sleeper stabilization method for railway sleeper, involves incorporating resin comprising two components in fissure, where fissure is filled and closed, and resin is incorporated in fissure by filling element |
DE102012009284A1 (en) * | 2012-05-11 | 2013-11-14 | Goldschmidt Thermit Railservice Gmbh | Method for remediating a solid ballast track constructed in e.g. railway station, involves forming filling openings along long side of threshold region before filling the filling material into cavity |
EP2690218A2 (en) | 2012-07-22 | 2014-01-29 | Andreas Kroll | Method for crack repair on concrete sleepers for railway tracks |
DE102015119884A1 (en) | 2015-11-17 | 2017-05-18 | adicon dichte Bauwerke GmbH | Process for the rehabilitation of concrete sleepers |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3209160A1 (en) | 1981-03-16 | 1983-01-05 | KAT Kunststoff-Anwendungstechnik GmbH, 2800 Bremen | Method and apparatus for filling cracks in parts of buildings by means of synthetic resins |
DE9116109U1 (en) | 1991-12-28 | 1992-02-27 | Dyckerhoff & Widmann Ag, 8000 Muenchen, De | |
DE10053089A1 (en) | 2000-10-26 | 2002-05-08 | Andreas Peter Boue | Procedure for sealing of unsealed material entails providing on at least one point an opening for filling with sealing material, and providing on at least one second point an opening for applying of vacuum |
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2021
- 2021-06-17 DE DE102021115681.5A patent/DE102021115681A1/en active Pending
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2022
- 2022-06-13 EP EP22178588.4A patent/EP4105384A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10248037B3 (en) * | 2002-10-15 | 2004-05-06 | Walter - Heilit Verkehrswegebau Gmbh | Secondary treatment method for railway track with extraction of fastening bolts from sleepers, drilling of sleeper, and filling of space with synthetic resin or cement suspension |
DE102012202877A1 (en) | 2012-02-24 | 2013-08-29 | CSE Construction GmbH | Railway sleeper stabilization method for railway sleeper, involves incorporating resin comprising two components in fissure, where fissure is filled and closed, and resin is incorporated in fissure by filling element |
DE102012009284A1 (en) * | 2012-05-11 | 2013-11-14 | Goldschmidt Thermit Railservice Gmbh | Method for remediating a solid ballast track constructed in e.g. railway station, involves forming filling openings along long side of threshold region before filling the filling material into cavity |
EP2690218A2 (en) | 2012-07-22 | 2014-01-29 | Andreas Kroll | Method for crack repair on concrete sleepers for railway tracks |
DE102015119884A1 (en) | 2015-11-17 | 2017-05-18 | adicon dichte Bauwerke GmbH | Process for the rehabilitation of concrete sleepers |
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