EP1512792A2 - Protective layer for railway track bed - Google Patents
Protective layer for railway track bed Download PDFInfo
- Publication number
- EP1512792A2 EP1512792A2 EP04017565A EP04017565A EP1512792A2 EP 1512792 A2 EP1512792 A2 EP 1512792A2 EP 04017565 A EP04017565 A EP 04017565A EP 04017565 A EP04017565 A EP 04017565A EP 1512792 A2 EP1512792 A2 EP 1512792A2
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- EP
- European Patent Office
- Prior art keywords
- protective layer
- ballast
- track
- railway track
- shaped elements
- 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
Links
- 239000011241 protective layer Substances 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000007774 longterm Effects 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 12
- 239000006260 foam Substances 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 7
- 238000005056 compaction Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 230000000284 resting effect Effects 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 2
- SEQDDYPDSLOBDC-UHFFFAOYSA-N Temazepam Chemical compound N=1C(O)C(=O)N(C)C2=CC=C(Cl)C=C2C=1C1=CC=CC=C1 SEQDDYPDSLOBDC-UHFFFAOYSA-N 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 239000011888 foil Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000004064 recycling Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- 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
- E01B1/001—Track with ballast
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/006—Means for protecting the underground against spillage
Definitions
- the invention relates to a protective layer for the ballast body of a track track, especially for railways, which the ballast body against the upcoming Earth body separates.
- PSS Demarcate protective layers
- the invention is based on the object, a protective layer for the ballast body a track track, especially for railways, which the ballast against separating the upcoming earth body, developing a cost-saving Replacement mineral support or layer protection layers allows.
- This protective layer may be suitable for existing, rehabilitated routes with a to make use of less logistics and machinery than hitherto.
- the protective layer should in a continuous conversion process with high Propulsion power be installed.
- This object is in accordance with the preamble of claim 1 according to the invention characterized in that the protective layer of a nonwoven layer, which covers the contact area of the upcoming earth body with the ballast, and on this fleece resting, abutting plate-shaped elements with high compressive strength and low water absorption in long-term contact built up with moisture.
- a system can not only Drain the superstructure reliably, but also by the weight of the superstructure as well as from the train traffic resulting loads reliable and damage-free take up.
- the preferred embodiment of the plate-shaped elements made of hard foam additionally offers the advantages of a very low thermal conductivity, a high modulus of elasticity, favorable fracture stress ratios and a low dead weight, whereby a manual handling of the plate elements is possible.
- a Folding of rigid foam panels ensures a sufficiently positive connection two elements each.
- B 2 * y + SB.
- the size y corresponds to the vertical distance between the upper edge of the protective layer and the lower edge of the sleepers resting on the ballast body, the size SB, however, gives the measured transversely to the track longitudinal axis Distance between both heads of a track threshold. This ensures that the Protective layer regardless of their vertical mounting position always relevant Load spreading area covers.
- the plate-shaped elements are made of Rigid foam, especially extruded polystyrene (e.g., X-PS-G).
- Thickness of the plate-shaped elements in the transition region between one according to the invention executed Bettungs stresses and one without tarpaulin protective layer running ball body over a length of at least 20 meters continuously decreases and the minimum thickness of an element in the final area of the transition still at least 0.04 meters. This ensures that both the load capacity the substructure in the transition area remains guaranteed, but at the same time despite different moduli of elasticity between the two bed bodies uniform Driving characteristics are ensured for the trains.
- the nonwoven layer is made of polypropylene and has a weight per unit area of at least 400 g / m 2 . It is also advantageous if the nonwoven layer is designed with a minimum load of 3 mm for a given load of 2 kN. Due to these material properties, the nonwoven exerts a capillary breaking effect. This makes sense, so that both the by the bumps between the plate-shaped elements penetrating leachate and the water rising through the pore water pressure rising water is reliably guided by the fleece in the edge drainage and water penetration of the protective layer is prevented.
- the preparation of the inventive protective layer is carried out using a commercially available ballast cleaning machine, which causes a significantly lower capital outlay compared to the required in gravel-sand mixtures turf conditioning.
- the ballast cleaning machine is merely supplemented by a nonwoven unwinding device and a compaction plank to produce a level and sufficiently densified ground plane.
- ballast bed cleaning In the course of a ballast bed cleaning og Bettungstivsmaschine clears the track ballast below the track grate by means of a Schrapers or chain bar, cleans the old ballast, sifts to small ballast components and reintegrates the thus cleaned track ballast below again under the track grid.
- the track grid is only raised in this process, but otherwise remains in its position.
- the created in this work process of ballast cleaning machine ballast-free space can now be used for the introduction of fleece and plate elements. Within this ballast-free working space, the compaction pile runs ahead in the working direction and produces the required flatness, load capacity and density of the earth.
- the fleece is rolled out to the Erdplanum, with an overlap of both roller conveyors of at least 30 cm takes place at a possible roll change.
- the manual insertion of the plate elements forms the last step within the ballast-free working space before the processed ballast is fed back.
- a gravity-assisted mechanical feed of the plate elements can be realized, for example in analogy to the feeding of track sleepers in the known track-laying machines.
- the protective layer according to the invention tolerates a deviation from the desirable joint-free abutment of the plate elements, so that rectangular plate elements can continue to be used for this purpose. This has an advantageous effect on warehouse logistics.
- ballast cleaning measures usual work regarding lifting and compression stoppers as well as track stabilization.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Laminated Bodies (AREA)
- Packaging Of Machine Parts And Wound Products (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Magnetic Heads (AREA)
- Bipolar Transistors (AREA)
Abstract
Description
Die Erfindung betrifft eine Schutzschicht für den Bettungskörper eines Gleisfahrweges, insbesondere für Eisenbahnen, welche den Bettungskörper gegen den anstehenden Erdkörper abtrennt.The invention relates to a protective layer for the ballast body of a track track, especially for railways, which the ballast body against the upcoming Earth body separates.
Seit einigen Jahrzehnten ist es im Oberbau der Eisenbahnen üblich, den aus Gleisschotter aufgebauten Bettungskörper gegen das angrenzende Erdplanum mittels sogenannter Planumsschutzschichten (PSS) abzugrenzen. Dadurch soll der Bettungskörper von den teilweise negativen bodenmechanischen Einflüssen des anstehenden Erdgrundes entkoppelt beziehungsweise die unzureichenden bodenmechanischen Kennwerte des anstehenden Erdgrundes kompensiert werden. Üblicherweise werden PSS in Form von mineralischen Kies-Sand-Gemischen (KSG) mit oder ohne Zugabe von Brechkorn oder Recycling aufgebaut, deren Zusammensetzung und Körnung in Abstimmung mit den im jeweiligen Einzelfall vorliegenden hydrologischen und bodenmechanischen Verhältnissen festgelegt werden muss. Auf jeden Fall weisen diese Mineralstoffgemische eine wasserableitende und tragfähigkeitserhöhende Wirkung auf und schützen somit das Schotterbett vor Staunässe, Frostschäden und ungleichmässigen Setzungen bzw. Hebungen. Als besonders nachteilig wird allgemein empfunden, dass die Stärke der einzubauenden Kiessand-Schichten nicht nur ortsabhängig stark variieren, sondern dass vor allem grosse Mengen an Erdmaterial ausgehoben und abtransportiert, zugleich ebenso grosse Mengen an neu einzubauenden Planumssanden angeliefert werden müssen. Da diese Transportvorgänge üblicherweise nur im Profil des gesperrten Arbeitsgleises erfolgen können, sind sie mit grossem maschinentechnischen Aufwand verbunden.For some decades it is common in the superstructure of the railways, that of track ballast built bed body against the adjacent Erdplanum means of so-called Demarcate protective layers (PSS). This should be the ballast from the partially negative soil mechanical influences of the upcoming soil decoupled or the insufficient soil mechanical characteristics be compensated for the upcoming earth. Usually, PSS are in Form of mineral gravel-sand mixtures (KSG) with or without addition of Crushed grain or recycling built up, their composition and grain size in vote with the hydrological and soil mechanics present in each individual case Conditions must be established. In any case, these mineral mixtures a water-draining and sustainability-increasing effect on and thus protect the ballast bed from waterlogging, frost damage and uneven Settlements or uplifts. As a particular disadvantage is generally felt that the strength of the gravel sand layers to be installed vary not only strongly depending on the location, but that above all large amounts of earth material are excavated and transported away, At the same time, equally large quantities of newly installed plan sands have been delivered Need to become. As these transport processes are usually only in the profile of locked work tracks can be made, they are with a large mechanical engineering Effort connected.
Aus DE 31 47 346 ist es bekannt, Hartschaumplatten als Ersatz für diese aus mineralischen Gemischen aufgebaute PSS auf das schotterfreie Planum aufzubringen und somit eine vergleichbare Wirkung wie bei der "klassischen" PSS zu erzielen. Es hat sich jedoch erwiesen, dass keine hinreichend fugenfreie Verlegung der Hartschaumplatten erzielt werden konnte und damit die von einer solchen Schutzschicht geforderte wasserableitende Wirkung nicht erreichbar war. Zur Erzielung einer besseren Wasserabdichtung schlägt DE 31 47 346 den Einbau zweier übereinanderliegender Schichten aus Hartschaumplatten vor, wobei die Trennfugen dieser beiden Schichten zueinander derart versetzt angeordnet werden sollen. In der Baustellenpraxis hat sich dieser Ansatz jedoch als wenig realitätsbezogen erwiesen. From DE 31 47 346 it is known hard foam panels as a substitute for these from mineral Apply mixtures built PSS on the ballastless planum and thus to achieve a comparable effect as with the "classic" PSS. It has However, proved that no sufficiently joint-free installation of foam boards could be achieved and thus required by such a protective layer wasserableitende Effect was unattainable. To achieve a better water seal DE 31 47 346 proposes the installation of two superimposed layers made of foam boards before, wherein the joints of these two layers to each other to be arranged offset in such a way. In construction site practice, this approach has but proved to be less realistic.
Der Erfindung liegt die Aufgabe zugrunde, eine Schutzschicht für den Bettungskörper eines Gleisfahrweges, insbesondere für Eisenbahnen, welche den Bettungskörper gegen den anstehenden Erdkörper abtrennt, zu entwickeln, die einen kostensparenden Ersatz mineralischer Trag- bzw. Planumsschutzschichten ermöglicht. Insbesondere soll diese Schutzschicht geeignet sein, bestehende, sanierungsbedürftige Strecken mit einem geringeren Logistik- und Maschineneinsatz als bisher zu ertüchtigen. Neben der Ableitung von Wasser aus dem Schotterbett in die Randentwässerung und dem damit einhergehenden Schutz vor Frostschäden soll zugleich das Tragverhalten des Oberbaus hinsichtlich dynamischer und statischer Lasten aus dem Zugverkehr verbessert werden. Die Schutzschicht soll in einem kontinuierlichen Umbauverfahren mit hoher Vortriebsleistung einbaubar sein. Dabei ist anzustreben, dass keine neu zu konstruierenden, kapitalintensiven Baumaschinen erforderlich werden, sondern alle erforderlichen Leistungen weitestgehend mit dem vorhandenen Maschinenpark erbringbar sein sollten. Der Einbau dieser neuen Schutzschicht soll zudem witterungsunabhängiger als bei den Tragschichten aus Kies-Sand-Gemischen sein.The invention is based on the object, a protective layer for the ballast body a track track, especially for railways, which the ballast against separating the upcoming earth body, developing a cost-saving Replacement mineral support or layer protection layers allows. In particular, should This protective layer may be suitable for existing, rehabilitated routes with a to make use of less logistics and machinery than hitherto. In addition to the Discharge of water from the ballast bed in the edge drainage and the so accompanying protection against frost damage should at the same time the load-bearing behavior of the superstructure with regard to dynamic and static loads from train traffic become. The protective layer should in a continuous conversion process with high Propulsion power be installed. It is important to strive to ensure that there are no new constructs capital-intensive construction machinery are required, but all the necessary Services can be provided as far as possible with the existing machinery should. The installation of this new protective layer should also weather independent than be in the support layers of gravel-sand mixtures.
Diese Aufgabe wird in Verbindung mit dem Oberbegriff des Patentanspruches 1 erfindungsgemäß dadurch gelöst, dass die Schutzschicht aus einer Vliesschicht, welche den Kontaktbereich des anstehenden Erdkörpers mit dem Bettungskörper abdeckt, und auf diesem Vlies aufliegenden, aneinanderstossenden plattenförmigen Elementen mit hoher Druckbelastbarkeit und geringer Wasseraufnahmefähigkeit bei Langzeitkontakt mit Feuchtigkeit aufgebaut ist. Ein solchermassen ausgeführtes System kann nicht nur den Oberbau zuverlässig entwässern, sondern auch die durch Eigengewicht des Oberbaus sowie aus dem Zugverkehr resultierenden Lasten zuverlässig und schadensfrei aufnehmen. Die bevorzugte Ausführung der plattenförmigen Elemente aus Hartschaum bietet zusätzlich die Vorteile einer sehr geringen Wärmeleitfähigkeit, eines hohen Elastizitätsmoduls, günstiger Bruchspannungsverhältnisse sowie eines geringen Eigengewichtes, wodurch auch ein manuelles Handling der Plattenelemente möglich wird. Eine Falzung der Hartschaumplatten gewährleistet eine ausreichend formschlüssige Verbindung jeweils zweier Elemente.This object is in accordance with the preamble of claim 1 according to the invention characterized in that the protective layer of a nonwoven layer, which covers the contact area of the upcoming earth body with the ballast, and on this fleece resting, abutting plate-shaped elements with high compressive strength and low water absorption in long-term contact built up with moisture. Such a system can not only Drain the superstructure reliably, but also by the weight of the superstructure as well as from the train traffic resulting loads reliable and damage-free take up. The preferred embodiment of the plate-shaped elements made of hard foam additionally offers the advantages of a very low thermal conductivity, a high modulus of elasticity, favorable fracture stress ratios and a low dead weight, whereby a manual handling of the plate elements is possible. A Folding of rigid foam panels ensures a sufficiently positive connection two elements each.
Gemäss einer vorteilhaften Ausgestaltung des erfindungsgemässen Gedankens entspricht die Breite der Schutzschicht in Querrichtung zur Gleislängsachse mindestens einem Betrag B, wobei B gemäss der Beziehung B = 2*y + SB ermittelt wird. Hierbei entspricht die Grösse y dem vertikalen Abstand zwischen der Oberkante der Schutzschicht und der Unterkante der auf dem Bettungskörper aufliegenden Gleisschwellen, die Grösse SB gibt hingegen den in Querrichtung zur Gleislängsachse gemessenen Abstand beider Köpfe einer Gleisschwelle an. Dadurch ist gewährleistet, dass die Schutzschicht unabhängig von ihrer vertikalen Einbauposition stets den relevanten Lastausbreitungsbereich abdeckt.According to an advantageous embodiment of the inventive concept corresponds the width of the protective layer in the transverse direction to the track longitudinal axis at least an amount B, where B is determined according to the relationship B = 2 * y + SB. in this connection The size y corresponds to the vertical distance between the upper edge of the protective layer and the lower edge of the sleepers resting on the ballast body, the size SB, however, gives the measured transversely to the track longitudinal axis Distance between both heads of a track threshold. This ensures that the Protective layer regardless of their vertical mounting position always relevant Load spreading area covers.
Gemäss einer bevorzugten Ausführungsform sind die plattenförmigen Elemente aus Hartschaum, insbesondere extrudiertem Polystyrol (z.B. X-PS-G), aufgebaut.According to a preferred embodiment, the plate-shaped elements are made of Rigid foam, especially extruded polystyrene (e.g., X-PS-G).
Desweiteren ist es sinnvoll, wenn Werkstoff, vertikale Stärke und Grundfläche eines Einzelkörpers dieser plattenförmigen Elemente in Abhängigkeit von den bodenmechanischen Kennwerten des anstehenden Erdkörpers derart dimensioniert sind, dass auf der Oberfläche der eingebauten Schutzschicht Verformungsmoduli von Evd ≥ 45 MN/m2 oder Ev2 ≥ 100 MN/m2 bei einem Verdichtungsgrad von Dpr = 100 % erreicht werden.Furthermore, it makes sense if material, vertical strength and base area of a single body of these plate-shaped elements are dimensioned in dependence on the soil mechanical characteristics of the upcoming earth body such that on the surface of the incorporated protective layer deformation moduli of E vd ≥ 45 MN / m 2 or E v2 ≥ 100 MN / m 2 at a degree of compaction of D pr = 100% can be achieved.
Eine vorteilhafte Ergänzung des erfinderischen Grundkonzeptes sieht vor, dass die Stärke der plattenförmigen Elemente im Übergangsbereich zwischen einem erfindungsgemäss ausgeführten Bettungskörper und einem ohne Planumsschutzschicht ausgeführten Bettungskörper über eine Länge von mindestens 20 Meter kontinuierlich abnimmt und die Mindeststärke eines Elementes im Schlussbereich des Überganges noch mindestens 0,04 Meter beträgt. Dadurch wird erreicht, dass sowohl die Tragfähigkeit des Unterbaus im Übergangsbereich gewährleistet bleibt, gleichzeitig aber auch trotz unterschiedlicher Elastizitätsmoduli zwischen den beiden Bettungskörpern gleichmäßige Fahreigenschaften für die Züge sichergestellt werden.An advantageous addition to the inventive concept provides that the Thickness of the plate-shaped elements in the transition region between one according to the invention executed Bettungskörper and one without tarpaulin protective layer running ball body over a length of at least 20 meters continuously decreases and the minimum thickness of an element in the final area of the transition still at least 0.04 meters. This ensures that both the load capacity the substructure in the transition area remains guaranteed, but at the same time despite different moduli of elasticity between the two bed bodies uniform Driving characteristics are ensured for the trains.
Gemäss einer bevorzugten Ausführungsform ist die Vliesschicht aus Polypropylen ausgeführt und weist ein Flächengewicht von mindestens 400 g/m2 auf. Ebenso ist es noch vorteilhaft, wenn die Vliesschicht bei einer gegebenen Auflast von 2 kN mit einer Mindeststärke von 3 mm ausgeführt ist. Durch diese Materialeigenschaften übt das Vlies eine kapillarbrechende Wirkung aus. Dies ist sinnvoll, damit sowohl das durch die Stösse zwischen den plattenförmigen Elementen eindringende Sickerwasser als auch das durch den Porenwasserüberdruck nach oben steigende Wasser durch das Vlies zuverlässig in die Randentwässerung geführt wird und eine Wasserdurchdringung der Schutzschicht verhindert wird.According to a preferred embodiment, the nonwoven layer is made of polypropylene and has a weight per unit area of at least 400 g / m 2 . It is also advantageous if the nonwoven layer is designed with a minimum load of 3 mm for a given load of 2 kN. Due to these material properties, the nonwoven exerts a capillary breaking effect. This makes sense, so that both the by the bumps between the plate-shaped elements penetrating leachate and the water rising through the pore water pressure rising water is reliably guided by the fleece in the edge drainage and water penetration of the protective layer is prevented.
Der Erfindungsgedanke wird in nachfolgendem Ausführungsbeispiel visualisiert. Es zeigt in Prinzipdarstellung
- Figur 1
- Aufbau der Schutzschicht
- FIG. 1
- Structure of the protective layer
Im Vorfeld des Einbaus der erfindungsgemässen Schutzschicht muss zunächst durch
Baugrund-Untersuchungen abgesichert sein, dass im Erdplanum grobkörniger beziehungsweise
gemischt- und feinkörniger Boden ansteht, der auf Verformungsmoduli von
Evd ≥ 35 MN/m2 oder Ev2 ≥ 45 MN/m2 bei einem Verdichtungsgrad von Dpr = 97 % gebracht
werden kann bzw. diese bereits aufweist.
Die Erstellung der erfindungsgemässen Schutzschicht erfolgt mit Hilfe einer handelsüblichen
Bettungsreinigungsmaschine, die im Vergleich zu den bei Kies-Sand-Gemischen
erforderlichen Planumsverbesserungsmaschinen einen deutlich niedrigeren Kapitalaufwand
verursacht. Die Bettungsreinigungsmaschine wird lediglich um eine Abrollvorrichtung
für das Vlies sowie eine Verdichtungsbohle zur Herstellung eines ebenen und
ausreichend verdichteten Erdplanums ergänzt.
Im Zuge einer Schotterbettreinigung räumt o.g. Bettungsreinigungsmaschine den Gleisschotter
unterhalb des Gleisrostes mittels eines Schrapers oder Kettenbalkens aus,
reinigt den Altschotter, siebt zu kleine Schotterbestandteile aus und baut den derart
gereinigten Gleisschotter nachfolgend wieder unter dem Gleisrost ein. Der Gleisrost
wird bei diesem Vorgang lediglich angehoben, verbleibt jedoch ansonsten in seiner Lage.
Der bei diesem Arbeitsprozess von der Bettungsreinigungsmaschine geschaffene
schotterfreie Raum kann nun auch zum Einbringen von Vlies und Plattenelementen
genutzt werden. Innerhalb dieses schotterfreien Arbeitsraumes läuft die Verdichtungsbohle
in Arbeitsrichtung voraus und stellt die geforderte Ebenflächigkeit, Tragfähigkeit
und Dichte des Erdplanums her. Von der anschliessenden Abrollvorrichtung wird das
Vlies auf das Erdplanum ausgerollt, wobei bei einem allfälligen Rollenwechsel eine Überlappung
beider Rollenbahnen von mindestens 30 cm erfolgt. Das manuelle Einlegen
der Plattenelemente bildet innerhalb des schotterfreien Arbeitsraumes den letzten Arbeitsschritt,
bevor der aufbereitete Schotter wieder zugeführt wird. Alternativ lässt sich
natürlich eine schwerkraftunterstütze mechanische Zuführung der Plattenelemente realisieren,
beispielsweise in Analogie zur Zuführung von Gleisschwellen bei den bekannten
Gleisumbaumaschinen. In Bogenradien bis zu 250 m toleriert die erfindungsgemässe
Schutzschicht ein Abweichen von dem an sich wünschenswerten fugenfreien Aneinanderstossen
der Plattenelemente, so dass hierfür weiterhin rechteckige Plattenelemente
verwendet werden können. Die wirkt sich vorteilhaft auf die Lagerlogistik aus. Prior to installation of the protective layer according to the invention, it must first be verified by subsoil investigations that coarse-grained or mixed-grained and fine-grained soils are present in the earth plane, contributing to deformation moduli of E vd ≥ 35 MN / m 2 or E v2 ≥ 45 MN / m 2 a degree of compaction of D pr = 97% can be brought or already has.
The preparation of the inventive protective layer is carried out using a commercially available ballast cleaning machine, which causes a significantly lower capital outlay compared to the required in gravel-sand mixtures turf conditioning. The ballast cleaning machine is merely supplemented by a nonwoven unwinding device and a compaction plank to produce a level and sufficiently densified ground plane.
In the course of a ballast bed cleaning og Bettungsreinigungsmaschine clears the track ballast below the track grate by means of a Schrapers or chain bar, cleans the old ballast, sifts to small ballast components and reintegrates the thus cleaned track ballast below again under the track grid. The track grid is only raised in this process, but otherwise remains in its position. The created in this work process of ballast cleaning machine ballast-free space can now be used for the introduction of fleece and plate elements. Within this ballast-free working space, the compaction pile runs ahead in the working direction and produces the required flatness, load capacity and density of the earth. From the subsequent unwinding device, the fleece is rolled out to the Erdplanum, with an overlap of both roller conveyors of at least 30 cm takes place at a possible roll change. The manual insertion of the plate elements forms the last step within the ballast-free working space before the processed ballast is fed back. Alternatively, of course, a gravity-assisted mechanical feed of the plate elements can be realized, for example in analogy to the feeding of track sleepers in the known track-laying machines. In bow radii up to 250 m, the protective layer according to the invention tolerates a deviation from the desirable joint-free abutment of the plate elements, so that rectangular plate elements can continue to be used for this purpose. This has an advantageous effect on warehouse logistics.
Nach Einbau der erfindungsgemässen Schutzschicht erfolgen die für Bettungsreinigungsmassnahmen üblichen Arbeiten hinsichtlich Hebe- und Verdichtungsstopfugen sowie Gleisstabilisierung. After incorporation of the protective layer according to the invention, these are carried out for ballast cleaning measures usual work regarding lifting and compression stoppers as well as track stabilization.
- 11
- Erdkörperearths
- 22
- Vlieswerkstoff aus PolypropylenNonwoven material made of polypropylene
- 33
- plattenförmiges Elementplate-shaped element
- 44
- Bettungskörper aus GleisschotterBallast body made of track ballast
- 55
- Gleisschwellesleeper
- 66
- Schienerail
Claims (7)
dadurch gekennzeichnet, dass die Schutzschicht aus einer Vliesschicht, welche den Kontaktbereich des anstehenden Erdkörpers mit dem Bettungskörper abdeckt, und auf diesem Vlies aufliegenden, aneinanderstossenden plattenförmigen Elementen mit hoher Druckbelastbarkeit und geringer Wasseraufnahmefähigkeit bei Langzeitkontakt mit Feuchtigkeit aufgebaut ist.Protective layer for ballast bodies of a railway track, in particular for railways, which separates the ballast body against the upcoming earth body,
characterized in that the protective layer of a nonwoven layer, which covers the contact region of the upcoming earth body with the ballast body, and resting on this non-woven, abutting plate-shaped elements with high pressure resistance and low water absorption capacity is built with long-term contact with moisture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL04017565T PL1512792T3 (en) | 2003-09-03 | 2004-07-24 | Protective layer for railway track bed |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20313800U | 2003-09-03 | ||
| DE20313800U DE20313800U1 (en) | 2003-09-03 | 2003-09-03 | Protective layer for the ballast of a track track |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1512792A2 true EP1512792A2 (en) | 2005-03-09 |
| EP1512792A3 EP1512792A3 (en) | 2005-05-11 |
| EP1512792B1 EP1512792B1 (en) | 2010-01-20 |
Family
ID=29558155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04017565A Expired - Lifetime EP1512792B1 (en) | 2003-09-03 | 2004-07-24 | Protective layer for railway track bed |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1512792B1 (en) |
| AT (1) | ATE455905T1 (en) |
| DE (3) | DE20313800U1 (en) |
| PL (1) | PL1512792T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014006144A1 (en) * | 2012-07-04 | 2014-01-09 | Hering Bau Gmbh & Co. Kg | Acoustic shielding unit and structure thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979766B (en) * | 2010-10-21 | 2012-07-11 | 中铁第四勘察设计院集团有限公司 | Subgrade bed structure of high-speed railway red clay cutting |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3147346A1 (en) | 1981-03-04 | 1982-09-16 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft mbH, 1010 Wien | BALLET CLEANING MACHINE AND HARD FOAM PANEL LAYING |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB339520A (en) * | 1929-12-30 | 1930-12-11 | Trinidad Deutsche Oel Und Asph | Method of constructing railway embankments |
| US3587964A (en) * | 1969-04-18 | 1971-06-28 | Meadows W R Inc | Protective course for bridge deck |
| DE3524719A1 (en) * | 1985-07-11 | 1987-01-15 | Phoenix Ag | Protective layer for elastic track bed mat |
| GB2243108B (en) * | 1990-02-14 | 1994-02-23 | Ian Thomas Smith | Railway tracks |
-
2003
- 2003-09-03 DE DE20313800U patent/DE20313800U1/en not_active Expired - Lifetime
-
2004
- 2004-04-13 DE DE202004005761U patent/DE202004005761U1/en not_active Expired - Lifetime
- 2004-07-24 EP EP04017565A patent/EP1512792B1/en not_active Expired - Lifetime
- 2004-07-24 DE DE502004010662T patent/DE502004010662D1/en not_active Expired - Lifetime
- 2004-07-24 AT AT04017565T patent/ATE455905T1/en active
- 2004-07-24 PL PL04017565T patent/PL1512792T3/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3147346A1 (en) | 1981-03-04 | 1982-09-16 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft mbH, 1010 Wien | BALLET CLEANING MACHINE AND HARD FOAM PANEL LAYING |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014006144A1 (en) * | 2012-07-04 | 2014-01-09 | Hering Bau Gmbh & Co. Kg | Acoustic shielding unit and structure thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE202004005761U1 (en) | 2004-08-19 |
| DE502004010662D1 (en) | 2010-03-11 |
| PL1512792T3 (en) | 2010-06-30 |
| DE20313800U1 (en) | 2003-11-13 |
| ATE455905T1 (en) | 2010-02-15 |
| EP1512792B1 (en) | 2010-01-20 |
| EP1512792A3 (en) | 2005-05-11 |
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