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EP2227598B1 - Procédé de consolidation d'un lit de ballast et dispositif de mise en oeuvre de ce procédé - Google Patents

Procédé de consolidation d'un lit de ballast et dispositif de mise en oeuvre de ce procédé Download PDF

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Publication number
EP2227598B1
EP2227598B1 EP08854426A EP08854426A EP2227598B1 EP 2227598 B1 EP2227598 B1 EP 2227598B1 EP 08854426 A EP08854426 A EP 08854426A EP 08854426 A EP08854426 A EP 08854426A EP 2227598 B1 EP2227598 B1 EP 2227598B1
Authority
EP
European Patent Office
Prior art keywords
ballast bed
ballast
cover
reactive mixture
foaming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08854426A
Other languages
German (de)
English (en)
Other versions
EP2227598A1 (fr
Inventor
Jürgen Wirth
Wolfgang Pawlik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hennecke GmbH
Original Assignee
Hennecke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hennecke GmbH filed Critical Hennecke GmbH
Publication of EP2227598A1 publication Critical patent/EP2227598A1/fr
Application granted granted Critical
Publication of EP2227598B1 publication Critical patent/EP2227598B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • 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
    • E01B2/00—General structure of permanent way
    • 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
    • E01B27/12—Packing sleepers, with or without concurrent work on the track; Compacting track-carrying 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
    • E01B27/12—Packing sleepers, with or without concurrent work on the track; Compacting track-carrying ballast
    • E01B27/20—Compacting the material of the track-carrying ballastway, e.g. by vibrating the track, by surface vibrators
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2203/00—Devices for working the railway-superstructure
    • E01B2203/04—Cleaning or reconditioning ballast or ground beneath

Definitions

  • the invention relates to a method for strengthening a ballast bed, in the upper region of which sleepers with rails mounted thereon are arranged, the ballast bed having load transfer areas underneath the sleepers which receive loads acting on the rails and transfer them to an earth body below the ballast bed Voids in the ballast of the ballast bed are foamed with foam formed from a reactive mixture. Furthermore, the invention relates to a device for carrying out the method.
  • the traditional railway track consists essentially of the gravel bed installed on a so-called planum, in which the sleepers, which may consist of wood, concrete or steel, are embedded and on which the rails are fastened.
  • the method according to the invention is characterized spatially delimiting the foam which expands during foaming by arranging a cover on or above the ballast bed before completion of the foaming process.
  • the tolerance band for the cavity volume to be foamed out defines the range from the smallest possible to the largest possible cavity volume to be foamed. In essence, this depends on the packing density, the Schaumschlotgeometrie and the ballast bed height. All these sizes are subject to a certain tolerance, the sum of which is ultimately decisive for the width of the tolerance band for the cavity volume to be expanded.
  • the tolerance band for the void volume to be expanded has to be determined empirically by suitable experiments. This usually happens only once in advance and does not have to be repeated constantly.
  • the tolerance of the cavity volume brieflyInumenden in the maximum range is now the empirically determined maximum possible void volume of the ballast in the region of the injection point.
  • knowledge of the ballast bed height course should be taken into account so as not to bring in unnecessarily much foam, as this causes unnecessary raw material costs. Possibly.
  • the cover does not necessarily cover the entire exposed top of the ballast bed.
  • the cover covers an area of the ballast bed which extends over a radius of at least 200 mm, preferably at least 300 mm, from an introduction point or introduction line for the reaction mixture.
  • the inventive method provides the additional advantage that reactive plastic, which would foam over without cover and represents waste after its removal, avoids the side in the adjacent ballast bed field.
  • the prerequisite is, of course, that the cover is sufficiently wide. That is, the inventive method also allows optimal utilization of the reactive plastic used and thus also provides an additional positive, economic aspect.
  • this threshold forms part of the cover.
  • ballast bed in this context, the totality of all on the subgrade, ie resting on the compacted surface of the earth ballast stones of the railway superstructure; and as a ballast structure is called the structure of the touching gravel stones with the more or less large cavities between the ballast stones.
  • the cover also covers the lateral sloping areas of the ballast bed.
  • the inventive method comprises both a complete foaming and a partial foaming of a ballast bed to be solidified.
  • completely foaming essentially all cavities in the ballast structure of the respective ballast bed are filled with foam.
  • ballast structure In a preferred variant of the method, however, only cavities in the ballast structure are filled up, which are located below the sleepers within the load transfer areas. Accordingly, you also need only minimized covers that limit only the tip of the rising to the threshold foam chambers. This variant is particularly cost-effective, since in this way the use of reactive plastic and thus also the corresponding raw material costs can be minimized.
  • the foaming process can essentially begin only when the cover has been placed on or above the ballast bed.
  • the time required for applying the cover must therefore be taken into account when activating or catalysing the raw material system. This has the consequence that the curing times for the reactive plastic are longer than in the second variant.
  • the decision as to which of the two variants of the method is most suitable can only be made within the framework of the particular, specific application.
  • a further embodiment of the method according to the invention provides that a sprayable or spreadable release agent is applied to the underside of the cover.
  • a release film e.g. made of polyethylene, placed on the ballast bed.
  • Another variant is to seal the underside of the cover itself with a self-releasing material, e.g. made of polyethylene, or another non-stick coating.
  • a self-releasing material e.g. made of polyethylene, or another non-stick coating.
  • covers which rest directly on the ballast bed, and on the other covers, which are designed so that they are arranged in their stored position with a distance to the ballast bed surface.
  • Covers that rest on the ballast bed should generally be flexible, as the ballast bed is usually never completely flat.
  • the use of a flexible mat or foil is also advantageous in terms of compensation for tolerances of the spacing of the successive, substantially evenly spaced thresholds.
  • the foaming pressure may well be 0.01 to 0.2 bar. This means that the surface force resulting from the foaming pressure on the flexible mat or film must be counteracted either by suitable weighting or by a counter-pressure, for example that of a supported air cushion.
  • the necessary counterforce can preferably be applied by a rail vehicle itself, which is part of a corresponding device for carrying out the method according to the invention.
  • the covers, which are arranged according to the alternative method variant with distance to the ballast bed surface are suitably made of rigid, ie rigid materials, such as sheet metal. Thus, these rigid covers already bring with them a certain weighting.
  • rail vehicle itself can generally be used for support, since it is usually during the curing of the reactive foam on the cover.
  • the distance between the gravel bed surface and the underside of the cover also has the effect of creating a dense plastic surface above the ballast bed, which protects the ballast bed against any soiling, but also against rainwater and ultimately also against effects of freezing moisture.
  • the reactive components are metered to at least one high-pressure mixing head and mixed there. Subsequently, the liquid reactive mixture is applied free-flowing on the surface of the ballast structure.
  • the liquid reactive mixture is adjusted in such a way that the foaming process essentially begins only when the reactive mixture flowing through the ballast skeleton has reached the surface of the earth body located below the ballast bed.
  • ballast scaffold is completely filled with reactive plastic from the subgrade to the area below the sleepers, so that at least within the load transfer areas no harmful air sacks can remain in which the ballast stones would be loose and thus not against turning and shifting would be stabilized.
  • the reactive mixture is preferably adjusted so that the foaming process begins with a delay in the range of 3 seconds to 30 seconds.
  • the start time must be greater for larger ballast bed heights, e.g. in curves, be significantly longer than at lower ballast bed heights.
  • the start time must also be longer if the gravel bed cover is made after the mixture has been added, and it may be shorter if the ballast bed cover is made prior to introducing the liquid reactive mixture.
  • the cover can be removed again 5 to 100 seconds after the end of the start time or after the start of foaming. For highly reactive foam systems after approx. 5 to 20 seconds, for very slowly reactive foam systems after approx. 80 to 100 seconds.
  • both the ballast stones and the planum should be as dry as possible in order to ensure a perfect chemical reaction sequence.
  • ballast stones are already dry before application to the planum, as well as the planum itself, and after the construction of the ballast bed on the planum no more moisture can get into the ballast bed or on the planum, e.g. by covering the ballast bed with a tent roof.
  • the foaming machine is located directly behind a tamping machine for filling and compacting the dried ballast. In this way, the ballast bed can be foamed as planned in a defined, dry state.
  • the optimal temperature of the bedrock to be foamed is in the range of about 30 to 35 ° C. That means, in winter, when the temperatures are in the minus range, the ballast stones and the planum must be heated, while at high summer temperatures the ballast stones as well as the planum would have to be cooled.
  • relatively high temperatures of the ballast bed to be foamed out as so-called thermal activation and to prevent the chemical activation, ie. accordingly lower the activator or catalyst content.
  • the device according to the invention comprises at least one rail vehicle, which is provided with a foaming system for foaming voids in the ballast structure of a ballast bed, wherein the foam is formed from a liquid reactive mixture, and wherein the Foaming plant having at least one mixing device for mixing the components of the reactive mixture and at least one discharge channel for introducing the liquid reactive mixture into the ballast structure.
  • the at least one rail vehicle is provided with at least one movable or transportable cover for the spatial limitation of expanding foam.
  • the rail vehicle has at least one lifting device, which places the at least one cover on or above the ballast bed before completion of the foaming process and removes it after completion of the foaming process.
  • the aggregates for drying and / or tempering are located on the first rail vehicle, as well as a lifting device for placing the covers.
  • the Metering units with the storage containers and the at least one high-pressure mixing head with the associated handling device and a lifting device for removing the covers.
  • a high-pressure mixing head depending on the degree of difficulty of the mixing task, either a one- or a two- or a three-slider mixing head can be used.
  • the components are sprayed via nozzles, which convert the pressure energy into flow energy, into a small mixing chamber in which they mix with each other due to their high kinetic energy.
  • the pressure of the components entering the nozzles is at an absolute pressure of more than 25 bar, preferably in a range between 30 and 300 bar.
  • the mixing chamber is cleaned mechanically after firing by means of a plunger.
  • mixing heads may also be used in the method according to the invention, which are blown out with air.
  • the main advantage of the high pressure mixing head is the fact that such a mixing head can be cleaned much better and without the use of solvents after each shot.
  • high-pressure mixing heads are one-, two- or three-stage mixing heads in question, all of which are self-cleaning. That is, in these types of mixing heads, the complete mixing and discharge system is mechanically cleaned by slide from reactive mixture, so that then no more complicated rinsing and cleaning operations are required.
  • a one-, two- or three-slide mixing head is used depends on the degree of difficulty of the mixing task for the reactive mixture.
  • a single-slide mixing head is quite sufficient, for example the so-called "groove mixing head” known in the polyurethane (polyurethane) industry.
  • a two-slide mixing head for example the MT mixing head from Hennecke, is preferably used.
  • a high-pressure mixing head which has a separate outlet channel, and through which the reactive mixture can be discharged laminar and free of spatter.
  • the cover is non-positively connected to the rail vehicle, wherein the weight of the rail vehicle is greater than the foaming force acting on the cover, which can be determined from the foaming pressure and the surface.
  • FIG. 1 illustrates the underlying task of the method according to the invention. It shows a ballast bed 1 over an uneven planum 2.
  • sleepers 3 are arranged, on which a rail track 4 is attached.
  • the real void volume in relation to the entered reactive mixture is too small, since the real ballast bed height is significantly smaller than the calculated ballast bed height H. This has led to foaming of the left threshold 3 and the left rail area.
  • the real void volume in relation to the registered reactive mixture is too large, since the real ballast bed height is significantly greater than the calculated ballast bed height H. This has led to a too low foam vent, which has not reached the right threshold 3 so that the ballast stones are not stabilized over the too low foam vent.
  • FIGS. 2 and 3 show schematically the basic sequence of the method according to the invention.
  • FIG. 2 further shows a mixing head 5, which is preferably a high-pressure mixing head, fed to the reactive components 6, 7 metered and there be mixed.
  • the discharged from the mixing head 5 liquid reactive mixture 8 is applied free-flowing on the surface 9 of the ballast bed 1. It flows through the ballast tower 10 through to the planum 2.
  • the liquid reactive mixture is converted into a foam 11, preferably in polyurethane foam (see also Figures 3 and 4 ).
  • the foaming process does not start immediately after discharge from the mixing head 5, but with a time delay.
  • a suitable catalyst or activator is added to the reactive components 6, 7.
  • the reactive mixture is preferably adjusted by adding the catalyst or activator so that the foaming with a delay in the range of 3 sec to 30 sec begins.
  • the foaming process can, for example, begin after a time of approximately 15 seconds has elapsed.
  • the cover 12 is flexible and can thus adapt to any unevenness of the ballast bed surface.
  • an air cushion (not shown in the drawing), which is housed in a housing is arranged, which in turn is held by the rails 4.
  • At least the underside of the cover 12 is provided with a non-stick coating.
  • the start time of the foaming process has been set to about 15 seconds, on the one hand to allow the reactive mixture 8 to flow through to the planum 2, and on the other hand to have time to drive the high pressure mixing head 5 to its zero position (about 6 to 7 sec), and further to have time for applying the cover 12 (about 6 to 7 sec).
  • the calculatory remaining 1 sec is in addition to the rise time of the foam of about 4 to 5 seconds from planum 2 to cover 12 initially once a time reserve. Of course, with increasing production experience, the reserve time can be minimized. Approximately 80 sec after the end of the start time or after Shuumbeginn the cover 12 can be removed again.
  • the sleepers 3 are used in addition to the cover 12 in order to spatially limit the foam 11 expanding during foaming.
  • FIG. 4 schematically shows a section A - A through FIG. 3 , It is clear that the ballast bed 1 is hermetically sealed on its surface in the Z direction by the cover 12.
  • the cover 12 also covers the lateral sloping areas of the ballast bed 1. Excess foam can thus escape only within the ballast bed in the X and Y directions, a preference that illustrates the economy of the method according to the invention.
  • FIGS. 5 and 6 schematically show a variant of the method of the invention.
  • a subgrade 2 Above a subgrade 2 is a ballast bed 1, wherein in the upper part of the ballast bed 1 sleepers 3 are arranged, on which in turn rails 4 are fixed.
  • FIG. 5 furthermore shows two high-pressure mixing heads 5, to which reactive components 6, 7 are metered and mixed there.
  • the simultaneously discharged from the two high-pressure mixing heads 5, liquid reactive mixture 8 is applied on both sides next to the threshold 3 free flowing on the top 9 of the ballast bed 1.
  • the reactive mixture 8 flows through the ballast tower 10 to the planum 2 and forms there after a certain time foam 11, which rises through the ballast tower to the ballast bed top side 9 (see also FIG. 6 ); wherein the start time for the foaming in this example has been set to about 9 sec.
  • each of the two parts 12.1, 12.2 of the cover 12 has a width of at least about 200 mm.
  • the cover 12 is intrinsic and has a specific weight per unit area of at least about 0.012 kg / cm 2 in order to counteract the foaming pressure of 0.01 bar resulting from the rising foam 11.
  • the cover 12 has on its underside a non-stick coating, such as a release film, which prevents sticking of the foam 11 to the cover 12.
  • the threshold in question 3 is used in addition to the cover 12 to spatially limit the foaming foam 11 expanding during foaming.
  • the starting time for the reactive mixture in this example is about 9 sec. This is about 6 sec shorter than in the FIGS. 2, 3 and 4 example shown, because on the one hand, the amount of mixture is about 30% less and consequently also the time that is required to flow through the reactive mixture 8 to Planum 2 (about 4 to 5 sec) and On the other hand, the time for placing the cover 12 is also shorter (about 3 to 4 sec), because the cover 12 according to FIG. 6 much easier to handle.
  • the curing time for the reactive plastic can be reduced.
  • the cover 12 already about 60 sec. After the end of the start time or after the start of foaming are removed again.
  • FIGS. 7 and 8 schematically show further process variants for the method according to the invention. Same numbers in the FIGS. 7 and 8 like in the FIGS. 2, 3 and 4 or 5 and 6 also identify similar elements. In the FIGS. 7 and 8 are opposite the FIGS. 2, 3 and 4 or 5 and 6 show two further variants of the method.
  • the first variant is that the cover 12 is placed over the ballast bed 1 before the introduction of the reactive mixture (see FIG. 7 ) and the reactive mixture 8 is introduced freely flowing through an opening 14 in the cover 12 and the opening 14 is then closed again with an automatically actuated closure element 15 (see FIG. 8 ).
  • the start time by about 5 to 6 sec, with otherwise completely the same parameters as in the FIGS. 2, 3 and 4 shown procedure to shorten, namely the time required to hang up the cover.
  • the cover 12 can be removed after about 40 seconds.
  • the in the FIGS. 7 and 8 illustrated second variant consists in the fact that the cover 12 is not placed on the ballast bed 1, but is placed at a distance from the top 9 of the ballast bed 1.
  • the distance between the bottom of the cover 12 and the top 9 of the ballast bed 1 may be in the range of 0.5 cm to 10 cm, preferably in the range of 0.8 cm to 8 cm. Particularly preferred is a distance in the range of 1 cm to 5 cm. This is possible because, for example, outside on the rigid, plate-shaped body of the cover 12 holding elements 12.4 are attached, with which the cover 12 is suspended from the sleepers 3.
  • the plate-shaped body of the cover 12 is dimensioned to play with less than 40 mm, preferably less than 30 mm, more preferably less than 20 mm between two adjacent sills 3 is placeable.
  • the cover 12 according to the FIGS. 7 and 8 has on its underside a non-stick coating, such as a release film, which prevents sticking of the foam 11 to the cover.
  • FIG. 9 shows by way of example, schematically a device according to the invention for foaming the cavities in the ballast tower 10 of a ballast bed 1 with reactive plastic, for example with polyurethane.
  • a planum 2 is a ballast bed 1, in the upper region of the thresholds 3 are arranged, on which in turn rails 4 are fixed.
  • a Shuumzug consisting of two rail vehicles 17.1, 17.2, which are electronically coupled by means of a central computer 18.
  • On the first rail vehicle 17.1 is located next to the drive 19 for this rail vehicle 17.1, an aggregate 20 for tempering the subgrade 2 and the ballast stone 21 to about 35 ° C.
  • the unit 20 comprises, in addition to a heater (not shown in detail) for heating the ballast bed 1 at low outdoor temperatures, such as in winter, preferably also a cooling device (also not shown in detail) for cooling the ballast bed 1 at high outside temperatures.
  • ballast stones 21 have been delivered in this example in a dried state and applied by a separate work train (not shown in the drawing) on the already pre-dried Planum 2.
  • a mobile tent roof 22 has been placed so that both ballast bed 1 and 2 Planum are protected from the weather.
  • ballast bed 1 there is at least one heating device for drying the ballast bed 1 and the subgrade 2 on the first rail vehicle 17.1 or a third rail vehicle (not shown) ahead of the first rail vehicle 17.1.
  • the metering units 23 with the associated storage containers and the hydraulically connecting lines (not shown) for a polyol, an isocyanate and a catalyst, further comprising a high-pressure mixing head 5 with associated mixing head handling device 24th
  • the registered in the ballast bed 1 Reeducationgemisch 8 has a starting time of about 15 seconds to have enough time to flow through the one hand, the reactive mixture to Planum 2 or drive the high pressure mixing head 5 in its zero position and on the other hand after the mixture entry and the driving away of the high-pressure mixing head nor the cover 12 can hang up.
  • a stacking 25 for a plurality of covers 12 and one handling device (lifting device) 26, 27 for placing the covers 12 on the ballast bed 1 and for removing the covers 12th Der Stacking 25 is associated with a sensor (not shown) that detects the presence of covers 12 in the region of the stack.
  • the covers 12 are placed between the thresholds 3 on the ballast bed 1. They are intrinsically difficult in order to be able to counteract the foaming pressure of approx. 0.01 bar.
  • All units or devices 19, 20, 23, 24, 5, 25, 26, 27 communicate via impulse lines with the central computer 18, so that a fully automatic operation can take place.
  • the cover 12 which has been placed after the introduction of the reactive mixture can be removed again and temporarily stored on the stack 25.
  • FIG. 10 illustrates another embodiment of a device according to the invention for foaming the cavities in the ballast of a ballast bed 1 with reactive plastic, for example with polyurethane.
  • shown device is for the execution of in the FIGS. 7 and 8 provided variant of the method provided.
  • the device comprises two Suumzug forming rail vehicles 17.1, 17.2, which are electronically coupled by means of a central computer 18.
  • the unit 20 comprises, in addition to a heater for heating the ballast bed 1 at outside temperatures below the desired process temperature of about 30 to 35 ° C preferably also a cooling device (not shown), with which the ballast bed 1 optionally cooled at a higher temperature than the desired process temperature can be.
  • ballast stones 21 have also been delivered in this state in the dried state and applied by a separate work train (not shown) on the already pre-dried Planum 2 and compacted.
  • a mobile tent roof 22 has been arranged in order to protect the ballast bed 1 and 2 the Planum from the weather.
  • ballast bed 1 In the case of a wet ballast bed 1, there is a heating device on the first rail vehicle 17.1 or a third rail vehicle (not shown) ahead of the first rail vehicle 17.1, by means of which the ballast bed 1 and the surface 2 are dried.
  • first rail vehicle 17.1 On the first rail vehicle 17.1 are also a stack 25 of several covers 12 and a lifting device 26 for placing the covers 12 above the ballast bed first
  • the covers 12 are placed above the ballast bed 1 prior to the introduction of liquid reactive mixture 8. They are each made of a rigid, formed plate-shaped body which is dimensioned so that it can be placed with play of less than 20 mm between two adjacent thresholds 3. Each of the covers 12 is provided with retaining elements 12.4, which project laterally relative to the longitudinal sides of their plate-shaped body. With these holding elements 12.4, the respective cover 12 can be placed on two adjacent sleepers 3, so that the underside of its plate-shaped body is spaced from the top 9 of the ballast bed 1.
  • the cover 12 further has a passage opening 14 for the passage of liquid reactive mixture 8 into the scaffold and a closure element 15 associated with the passage opening.
  • the closure element 15 is preferably integrated in the cover 12 and is actuated by means of the lifting device 26 and / or by means of a discharge nozzle on the mixing head 5 of a foaming system, so that the through-opening 14 is opened in the cover 12 and closed again.
  • metering units 23 with the associated storage containers and hydraulically connecting lines (not shown) for a polyol, an isocyanate and a catalyst, and further a high-pressure mixing head 5 with associated mixing head handling device 24th
  • a lifting device 27 located on the second rail vehicle 17.2 a lifting device 27, which receives the placed above the ballast bed 1 covers 12 after completion of the foaming process again and deposits on this rail vehicle on a stack 25 '.
  • the two rail vehicles 17 1, 17. 2 are preferably equipped with a further conveying device (not shown), for example a conveyor belt, a roller belt or a chute, which / which covers the covers 12 received by the lifting device 27 from the second rail vehicle 17. 2 to the stacking 25 of the first rail vehicle 17.1 transports or directs.
  • foaming systems shown schematically can also have one or more sensors (not shown) for detecting introduction points for the liquid reactive mixture 8 provided on the ballast bed 1.
  • a further advantageous embodiment of the device according to the invention is that the rail vehicle 17.1 is equipped with at least one geophysical measuring device (not shown) for determining the local height of the ballast bed 1 at the point of introduction of the reactive mixture 8, wherein a computer or the central computer 18, the amount of to be introduced reactive mixture 8 as a function of the determined ballast bed height controls.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Railway Tracks (AREA)

Claims (15)

  1. Procédé de solidification d'une couche de ballast (1) dans la partie supérieure de laquelle sont disposées des traverses (3) sur lesquelles sont fixés des rails (4),
    la couche de ballast présentant en dessous des traverses (3) des zones (13) de reprise de charge qui reprennent les charges agissant sur les rails et les transmettent à un terrain situé en dessous de la couche de ballast,
    des cavités présentes dans le réseau de la couche de ballast (1) étant remplies d'une mousse (11) formée à partir d'un mélange réactif (8),
    une quantité de mélange réactif (8) suffisante pour assurer que la mousse (11) remplisse le réseau de ballast (10) depuis la surface (2) du terrain jusqu'au côté inférieur des rails (3) au moins dans les zones (13) de reprise de charge étant apportée dans le réseau de ballast,
    caractérisé en ce que
    la mousse (11) qui se dilate lors du moussage est délimitée spatialement en disposant sur ou au-dessus de la couche de ballast (1) un recouvrement (12) avant la fin de l'opération de moussage.
  2. Procédé selon la revendication 1, caractérisé en ce que le recouvrement (12) couvre une surface de la couche de ballast (1) qui s'étend sur un cercle d'au moins 200 mm, de préférence d'au moins 300 mm partant du point d'insertion ou d'une ligne d'insertion du mélange de réactif (8).
  3. Procédé selon les revendications 1 ou 2, caractérisé en ce que les traverses (3) sont utilisées en complément du recouvrement (12) pour délimiter spatialement la mousse (11) qui se dilate lors du moussage.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le mélange de réactif (8) est d'abord apporté dans le réseau de ballast (10) et le recouvrement (12) est ensuite placé sur ou au-dessus de la couche de ballast (1).
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce qu'une feuille de séparation est placée entre la couche de ballast (1) et le recouvrement (12).
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le recouvrement (12) est enlevé de la couche de ballast (1) de 5 à 100 s après le début de l'opération de moussage.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que la hauteur locale de la couche de ballast (1) à l'emplacement prévu pour apporter le mélange réactif (8) est déterminée au moyen d'au moins un appareil de mesure géophysique et en ce que la quantité du mélange réactif (8) à apporter est régulée en fonction de la hauteur ainsi déterminée de la couche de ballast.
  8. Dispositif en vue de l'exécution du procédé selon l'une des revendications 1 à 7, comprenant au moins un véhicule ferroviaire (17.1, 17.2) doté d'une installation de moussage permettant de mousser les cavités du réseau de ballast (10) d'une couche de ballast (1), la mousse (11) étant formée d'un mélange réactif (8) liquide et l'installation de moussage présentant au moins un dispositif de mélange (5) qui mélange les composants du mélange réactif (8) et au moins un canal d'extraction qui permet d'apporter le mélange réactif (8) liquide dans le réseau de ballast (10),
    caractérisé en ce que
    le ou les véhicules ferroviaires (17.1, 17.2) sont dotés d'au moins un recouvrement (12) mobile ou transportable qui délimite spatialement la mousse (11) en expansion et au moins un dispositif de relèvement (26, 27) qui place le ou les recouvrements (12) sur ou au-dessus de la couche de ballast (1) avant la fin de l'opération de moussage et qui l'enlève lorsque l'opération de moussage est terminée.
  9. Dispositif selon la revendication 8, caractérisé en ce que le ou les recouvrements (12) sont reliés en correspondance mécanique aux véhicules ferroviaires, la force du poids du véhicule ferroviaire étant supérieure à la force de la mousse qui agit sur le revêtement (12).
  10. Dispositif selon les revendications 8 ou 9, caractérisé en ce que le ou les revêtements (12) présentent un revêtement antiadhésif sur leur face inférieure.
  11. Dispositif selon l'une des revendications 8 à 10, caractérisé en ce que le ou les recouvrements (12) sont formés d'un tapis flexible.
  12. Dispositif selon l'une des revendications 8 à 10, caractérisé en ce que le ou les revêtements (12) sont formés par un corps rigide en forme de plaque.
  13. Dispositif selon la revendication 12, caractérisé en ce que le corps en forme de plaque est dimensionné de manière à pouvoir être placé entre deux traverses voisines avec un jeu inférieur à 40 mm, de préférence inférieur à 30 mm et de façon particulièrement préférable inférieur à 20 mm, le corps en forme de plaque étant doté d'éléments de maintien (12.4) au moyen desquels il peut être placé sur deux traverses (3) voisines de telle sorte que sa face inférieure soit maintenue à distance du côté supérieur (9) de la couche de ballast (1).
  14. Dispositif selon l'une des revendications 8 à 13, caractérisé en ce que l'installation de moussage présente au moins un détecteur qui détermine les emplacements d'apport de mélange réactif liquide (8) prévus sur la couche de ballast (1).
  15. Dispositif selon l'une des revendications 8 à 14, caractérisé en ce que le véhicule ferroviaire (17.1, 17.2) est équipé d'au moins un appareil de mesure géophysique qui détermine la hauteur locale de la couche de ballast (1) à l'emplacement prévu pour apporter le mélange réactif (8), un calculateur (18) régulant la quantité de mélange réactif (8) apportée en fonction de la hauteur de la couche de ballast qui a été déterminée.
EP08854426A 2007-11-27 2008-11-08 Procédé de consolidation d'un lit de ballast et dispositif de mise en oeuvre de ce procédé Not-in-force EP2227598B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007057064A DE102007057064A1 (de) 2007-11-27 2007-11-27 Verfahren zum Verfestigen eines Schotterbetts und Vorrichtung zur Durchführung des Verfahrens
PCT/EP2008/009435 WO2009068169A1 (fr) 2007-11-27 2008-11-08 Procédé de consolidation d'un lit de ballast et dispositif de mise en oeuvre de ce procédé

Publications (2)

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EP2227598A1 EP2227598A1 (fr) 2010-09-15
EP2227598B1 true EP2227598B1 (fr) 2012-01-18

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EP (1) EP2227598B1 (fr)
JP (1) JP5274571B2 (fr)
CN (1) CN101878339B (fr)
AT (1) ATE541989T1 (fr)
DE (1) DE102007057064A1 (fr)
ES (1) ES2380276T3 (fr)
WO (1) WO2009068169A1 (fr)

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DE102010016733B4 (de) 2010-04-30 2012-09-20 Bayer Materialscience Aktiengesellschaft Konditioniervorrichtung und Verfahren zum Trocknen und Temperieren eines Schotterbetts
WO2012126145A1 (fr) * 2011-03-24 2012-09-27 Bayer Materialscience Ag Procédé de fabrication de ballast
DE102011015210A1 (de) * 2011-03-25 2012-09-27 Strabag Rail Gmbh Fahrbahnweg für schienengebundene Fahrzeuge sowie Schienenunterstützung für einen solchen Fahrbahnweg
CN102259402A (zh) * 2011-05-31 2011-11-30 上海齐敬机械有限公司 聚氨酯发泡辅助设备以及聚氨酯发泡辅助工艺
CN103764912B (zh) * 2011-09-01 2016-08-17 科思创德国股份有限公司 道碴的制造方法
DE102011053368A1 (de) 2011-09-07 2013-03-07 Bayer Materialscience Aktiengesellschaft Raupenkette, Konditioniervorrichtung, Verfahren zum Temperieren eines Schotterbetts sowie Verwendung eines Schaumstoffs
CN103031786B (zh) * 2011-09-29 2016-02-10 拜耳材料科技(中国)有限公司 装置及使用其制备道碴道床的方法
WO2013057068A2 (fr) * 2011-10-19 2013-04-25 Bayer Intellectual Property Gmbh Appareil de déplacement de tête de mélange de machine de versage et système de versage
DE102012004720A1 (de) * 2012-03-07 2013-09-12 Frank Petrick Verfahren und Vorrichtung zum Verfestigen von lockeren Bodenmaterialien
EP2730699A1 (fr) * 2012-11-09 2014-05-14 Bayer MaterialScience AG Procédé destiné à transformer en mousse un lit de ballast d'une installation de rails de voie ferrée
RU2583112C2 (ru) * 2014-07-09 2016-05-10 Олег Александрович Мичурин Способ укрепления балластной призмы железнодорожного пути
CN104238504B (zh) * 2014-08-28 2017-04-12 徐州徐工铁路装备有限公司 一种聚氨酯泡沫固化道床的固化处理设备控制系统
CN104313955B (zh) * 2014-09-28 2016-08-31 徐州徐工铁路装备有限公司 一种有砟道床除湿调温设备
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JP6912053B2 (ja) * 2017-02-17 2021-07-28 株式会社カネコ化学 バラストからなる道床の解体方法及び該方法に用いられる樹脂溶解剤
CN109958008A (zh) * 2017-12-22 2019-07-02 中车北京二七机车有限公司 道砟挖掘装置及边坡清筛机
DE102019210289A1 (de) * 2019-07-11 2021-01-14 Hyperion Verwaltung Gmbh Schotter-Kunststoff-Verbundkörper
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DE102007057064A1 (de) 2009-05-28
JP5274571B2 (ja) 2013-08-28
ATE541989T1 (de) 2012-02-15
CN101878339A (zh) 2010-11-03
WO2009068169A1 (fr) 2009-06-04
CN101878339B (zh) 2012-11-21
JP2011504974A (ja) 2011-02-17
ES2380276T3 (es) 2012-05-10
EP2227598A1 (fr) 2010-09-15

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