KR20160072224A - Continuous travel track on a viaduct structure - Google Patents

Abstract

The present invention relates to a continuous running track (5) supported by a leg structure (1) comprising at least two leg sections (4) and a supporting framework for supporting the leg sections (4) ) Comprises a continuous slab 50 extending from one end of the leg 1 to the other end, a friction-preventing layer 55 arranged below the continuous slab 50, (53), the running track including at least one anti-lift device (54).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a continuous running track on a overpass according to the preamble of claim 1 and to a lift preventing device suitable for the running track.

In general, the invention relates to the field of rigid running tracks on a bridge structure for the purpose of supporting the movement of a vehicle, in particular a guided vehicle. Inductive vehicles are, in particular, public transport means, such as buses, trolley buses, trams, subways, trains or train units, which are guided by at least one guide rail located on a traveling track.

Typically, the legs (or pedestrian bridges) intended to support the running track are pierced by a set of piers (or posts) distributed between a first alternation located at one end of the leg and a second alternation disposed at the other end of the leg . The bridges and alternations are intended to support the leg sections and the leg sections are, for example, metallic beams or preformed concrete elements intended to form a support surface for a running track, typically referred to as a deck of the leg. Each of the sections distributed between the first bridge pier and the last bridge pier is placed on one of the bridge piers at each of its ends and thus extends from one bridge pier to another bridge pier, Separated from the ends of the adjacent compartments by a space called < / RTI > Optionally, the compartment may be supported by one or more other piers arranged between the end piers. The first and last sections themselves are placed on the first end alternating and first pier, respectively, on the last pier and second end alternation respectively. The various elements of the legs (piers, alternations, compartments, tracks) are selected according to the leg load and the use characteristics. Thus, the compartment typically forms a discontinuous surface intended to support the running track. In general, the compartments are placed on the piers of the legs by means of stationary and / or slidable support devices, which allow movement of at least one end of the compartment, And may be caused by differences in vehicle passing and / or temperature. The running track on the leg or overpass structure is also designed to withstand thermal and / or mechanical deformation (e.g., due to passage of the vehicle) that may occur during normal use of the track. Various solutions can compensate for these deformations. Typically, the track may include a plurality of track sections, each of the track sections being fixed to one of the sections and separated from the immediately adjacent section by a lateral expansion joint. In this form, the track is discontinuous and comprises a certain number of expansion joints distributed along its length, which separates the various sections and, under the influence of changes in vehicle pass and / or temperature, Is intended to compensate for longitudinal expansion. Unfortunately, such a solution is not suitable, for example, in an urban environment, because it causes noise problems, reduces passenger comfort, requires frequent inspection and maintenance, and tires of vehicles running on the driving track This is because the wear of the wheels can be increased early. In addition, the need to distribute the expansion joint along a traveling track increases the cost of civil engineering operations that make up a bridge or a pedestrian, and when the material of the track and the compartment reacts differently to temperature, Can be generated.

In order to avoid these problems, continuous tracks have been proposed and developed in the prior art. These include, by way of example, the following:

A continuous slab extending from one end of the leg to the other end and intended to rest on the upper surface of the section,

An intersecting plate intended to cover immediately adjacent ends of two successive sections and thus extending from one end of the section to the end of another immediately adjacent section, said plate being of the same width as the width of the track, And is therefore characterized by sufficient resilience and length to absorb the vertical movement of the ends without transferring to the slab, the cross plates being arranged between the upper surface of the section of the track and the continuous slab, plate,

An anti-friction layer disposed at the interface between the upper surface of the compartment and the lower surface of the continuous slab to form a slip plane between the continuous cross plates, the continuous slab having at least a longitudinal degree of freedom with respect to the upper surface of the compartment And an anti-friction layer

- a securing device for fixedly and rigidly connecting said continuous slab to said compartment and lateral stop so as to withstand a lateral force which may occur during movement of the inductive vehicle on said track or which may be caused by the slab itself, Wherein the lateral stop is fixed to the compartment and distributed laterally on each side of the track.

The above-mentioned continuous track is a continuous track which is partially rigidly fixed. In fact, it requires fixing of the slabs to the various compartments, which in particular produce localized (at fixed points) tensions and stresses which are harmful to the slab and the compartment when the inductive vehicle is running on the track.

It is an object of the present invention to provide a motorcycle which requires less maintenance, causes minimal noise problems, minimizes the stresses and tensions that can occur in the running track, and thus increases the service life of the track, In other words, it is proposed to provide a running track of a vehicle configured to be supported by a leg or a pedestrian structure, which makes it economically advantageous. Another object is to provide a long-distance welding rail (LWR), that is, a continuous rail, which has the advantage of reducing noise problems due to passage of the vehicle on the rail, increasing passenger comfort, and characterized by reduced wear and maintenance And suggest a driving track suitable for the purpose. In addition, another object of the present invention is to propose an anti-lift device that provides for the use of such a running track.

In order to achieve these objects, a running track is proposed by the content of claim 1, and an ascent prevention device is proposed by claim 14.

In addition, dependent claims claim the advantages of the present invention.

The present invention relates to a continuous running track on a leg structure, the leg structure comprising at least two leg sections, a first alternation located at one end of the leg and a second alternation located at the other end of the leg, Each of the compartments being separated from the immediately adjacent compartment by a road joint, the load supporting structure being, for example, a set of piers distributed between the first and second alternations, and the load supporting structure for supporting the compartment, Each of the sections distributed between one pier and the last pier is placed on one of the piers of the bridge at each of its ends, for example, and extends from one pier to another pier, thus the end of the section is connected to the road joint The first section and the final section are in particular separated from each other by a first end shift and a first pierge angle and a final pierce angle and a second end angle, Is placed on, the running track itself in accordance with the present invention

- continuous slabs formed of reinforced concrete, for example, which extend from one end of the leg to the other end and rest on the upper surface of the section,

An anti-friction layer disposed below the continuous slab, said anti-friction layer being configured to act as an interface between the lower surface of said continuous slab and the upper surface of said section, said anti-friction layer thus forming a slip plane for said continuous slab, The slab allowing at least a longitudinal degree of freedom with respect to the upper surface of the compartment, the anti-friction layer preferably extending continuously below all of the lower surface of the continuous slab, and

In particular below the anti-friction layer, positioned to extend from one end of the compartment to the end of the other adjacent compartment to cover the adjacent ends of the compartment to compensate for flexure or rotational movement in the support of the compartment And a cross plate,

Wherein the travel track comprises at least one anti-lift device configured to be rigidly connected / fixed to the compartment through the use of suitable fastening means, for example, and wherein the anti-lift device comprises a slip plane formed by the anti- And the movement or translation of the slab in a direction perpendicular to the slip layer can be restricted while providing free movement of the slab.

In particular, the anti-lift device includes a stop for restricting the movement of the slab in a direction perpendicular to the slip plane. The anti-lifting device is thus capable of preventing the non-zero movement of the slab in a direction perpendicular to the slip plane up to the stop, while allowing the movement of the slab in particular in the slip plane or plane generally parallel to the slip plane .

Advantageously, the anti-lift device according to the invention absorbs a stress perpendicular to the slip plane resulting from the movement of the slab in a direction perpendicular to the slip plane to the stop of the anti- And can re-deliver the stress to the compartment, particularly where the riser device is rigidly connected to the compartment. The rigid connection can be implemented, for example, in the lateral stop of the continuous slab or by means of a fixed bush pre-positioned within the section. To this end, the lifting device and the securing means used for rigidly connecting it to the compartment are made of a material which is coherent and able to withstand the forces resulting from the normal stresses.

Preferably, the continuous track according to the invention comprises a plurality of anti-lift devices distributed along the length of the track, the anti-lift device limiting the movement of the slab in a direction perpendicular to the slip plane, , Providing movement thereof along its longitudinal and / or transverse axis with respect to said compartment while allowing movement only over a distance defined by said stop of said anti-lift device. In particular, the track includes an anti-lift device proximate to the ends of the compartment.

For a better understanding of the present invention, the illustrative embodiments and examples are provided with the aid of the following drawings, wherein like reference numerals are used for like or equivalent objects.

1 is an exemplary embodiment (front view) of a running track according to the present invention.
2 is a top view of an exemplary embodiment of a running track according to FIG.
Figure 3 is an exemplary embodiment of a road joint intersection according to the present invention.
4 is a right side view of an exemplary embodiment of a running track according to the present invention.
Figure 5 is a top view of another exemplary embodiment of the track according to Figure 4;
Figure 6 is a top view of an exemplary embodiment of a track according to Figure 5;

1 and 2 schematically show an example of an embodiment of a running track 5 according to the present invention, respectively, in a front view and a top view. The running track 5 is a continuous track on the leg structure 1 and the leg structure 1 comprises at least two leg sections 4 and a first alternating 31 arranged at one end of the leg 1. [ A second alternating section 32 disposed at the other end of the leg and a load 2 formed by a piercing angle 2 distributed between a first alternation 31 and a second alternation 32 for supporting the section 4, And a support structure. In particular, the compartment may be placed on the fixture 22 and / or the slide 23 support device, as known to those skilled in the art at its end. Each section is separated from the adjacent section 4 by a road joint 23 in particular. Thus, the upper surface of the section (4) forms a discontinuous support surface for the running track (5).

In a preferred embodiment of the running track 5 according to the invention as shown in Figures 1 to 3,

- continuous slabs (50) extending from one end of the leg (1) to the other end and lying on the upper surface of the section (4)

- an anti-friction layer (55) disposed below the continuous slab (50), said anti-friction layer (55) being configured to act as an interface between the lower surface of the continuous slab (50) ) Thus forms a slip plane for the continuous slab 50 and allows the continuous slab to have at least longitudinal degrees of freedom with respect to the upper surface of the section 4, A friction-preventing layer, preferably continuously extending below all of the lower surface of the slab 50, and

In particular below the antislip layer 55 and below the continuous slab 50 and to cover the adjacent ends of the section 4 in order to compensate for the bending or rotational movement in the support of the section 4, And an intersecting plate (53) positioned to extend from an end of the immediately adjacent section to another end of the adjacent section.

Preferably, the anti-friction layer 55 comprises, for example, a first geotextile layer 551 intended to contact the continuous slab 50 by being bonded / fastened to the lower surface of the continuous slab 50, Wherein the first and second geotextile layers 551 and 552 are joined to the upper surface of the compartment such that the first and second geotextile layers 551 and 552 are in contact with the compartment 4, Or a geomembrane) layer 553, as shown in Fig. Advantageously, the geotextile / polyan / geotextile sandwich construction of the anti-friction layer improves sliding of the continuous slab on said section.

Preferably, the cross plate 53 is an extruded polystyrene panel (Styrodur type). Particularly, the compartment 4 comprises a pocket 41 at its end and the dimensions of the pocket correspond to the dimensions of the cross plate 53 so that the cross plate 53 is inserted into the pocket 41 The upper surface of the compartment 4 and the upper surface of the cross plate 53 are coincident or otherwise at the same level to form a continuous surface. Advantageously, this allows the continuity of the level below the continuous slab 50, thus facilitating the sliding of the continuous slab on the continuous surface formed by the upper surface of the cross plate 53 and the upper surface of the section 4 do.

A special feature of the running track 5 according to the invention is, for example, by means of concrete reinforcement and pouring for securing a part of the anti-lift device to the compartment 4, (54) configured to be rigidly connected to said compartment (4) using a fixed bushing and bolt system. In addition, the anti-lift device 54 according to the present invention provides the freedom of movement of the slab on the slip plane formed by the anti-friction layer 55, while moving the slab 50 in the direction N perpendicular to the slip plane. Or to restrict translation or translation of the tissue. Due to its construction as a monoblock free from movement on the slide surface formed by the friction layer, the running track 5 according to the invention is preferably adapted to support the rail 6 of the LWR (long range welding) Because the surface of the rail that provides the fixation of the rail has no discontinuity.

Figures 4-6 illustrate more details of the structural aspects of the preferred embodiment of the present invention, and more particularly, the anti-lift device 54. Preferably, the anti-surge device 54 according to the present invention preferably includes a head 543 which includes a stop or acts as a stopper itself, and a head 543 which is rigidly fastened to the section 4 directly or indirectly, And a body 542 designed to be fixed. The head is particularly designed to limit the movement of the slab 50 in a direction N substantially perpendicular to the slip plane and the movement is not particularly zero and is limited by the head 543 or the stop do.

Preferably, the continuous slab 50 is a self draining slab. To this end, it comprises in particular at least one drainage device 58 (shown in phantom) for the purpose of preventing the accumulation of water on the continuous track, the drainage device being integrated in the slab 50, It is free from discharge under the slab 50 to ensure free movement in the plane. The slab 50 is in particular a slab with three separate parts, the two separate parts being two support parts A and B having an upper surface forming a running surface for the wheels of the vehicle intended to run on the bridge, Lt; / RTI > is the one part B that receives the guide means of the vehicle. The portion A is thus intended to support a force generated by the movement of the vehicle, in particular on the leg structure, with a top surface arranged in the same plane, on which the wheels of the vehicle move. Part B is in particular intended to accommodate the guide rails 6, in particular the LWR, and the upper surface of the part B in particular is in a plane disposed below the level of the plane defined by the upper surface of the part A. The drainage device 58 can in particular drain the accumulated water on the upper surface of the part A and / or B from the lateral side of the slab 50. The drainage device forms a moderate gradient between the lateral end of the downstream slab 50 and the level of the upper surface of the upstream part B to allow water to flow from upstream to downstream by gravity, 50, for example, a network of previously placed or hollow formed channels. Preferably, the upper surface of the portion B is preferably provided on the extension of one of the hollow forming or placed channels of the portion A to improve the flow of water from the portion B towards the lateral side of the slab 50 In particular, at least one run off gutter or channel that passes to each side of the portion B.

Preferably, the continuous track comprises a heating device 56 positioned below the upper surface of portion A to heat the upper surface of portion A and / or an electrical cable duct 57 located in the continuous slab 50. [ . The electrical cable duct 57 may be, for example, an electrical conduit intended to supply electrical power to the inductive vehicle intended to heat the running surface of the continuous track (e. G., A joule effect) Provides the passage of cables.

According to a preferred embodiment, the body 542 is adapted to be directly fixed to the compartment 4 or to each of the lateral stops 541 of the continuous slab, in particular by means of the apparatus for adjusting the height of the plate, for example For example, a metal plate, and the lateral stop 541 is fixed to the partition 4 itself. According to the presently preferred embodiment, the head 543 is secured to the end of the plate, for example, so that at least one of the lateral sides of the upper surface of the continuous slab 50, as illustrated in FIG. 4, And protrudes above it. The anti-lift devices 54 are preferably distributed on each side of the continuous slab 50. The space separating the two immediately adjacent anti-lift devices 54 on the same side of the continuous slab 50 preferably forms a receiving portion of the stress along the entirety of the continuous slab 50 along the direction N By the finite element method. To accommodate the stresses, different plate lengths may be used. Each of these plates preferably has, on the one hand, an end thereof which supports the head 543 which protrudes onto the upper surface of the lateral side of the continuous slab, and on the other hand, Is positioned relative to the slab 50 to be secured to the leg section directly or to the lateral stop 541 in an alternative manner. Preferably, the head 543 has a substantially parallelepipedal shape and, in particular, includes at least one side parallel to the upper surface of the slab 50 and opposite the upper surface of the slab 50, Can contact the upper surface of the slab 50 when moving in the direction N and the side is covered by a layer of Teflon, possibly as a friction-resistant and compressive-resistant material 544, for example. In particular, the head 543 may include a first portion that is oriented along the direction N and that includes at least a non-compressive material intended to form a vertical stop capable of receiving a force acted upon by the slab 50, At least a second portion comprising at least compressible or resilient material intended to cushion the movement of the slab 50 along direction N. [ Preferably, the lifting device allows free or cushioning movement of the slab 50 in the direction N by the first portion or the stop.

Preferably, the continuous track (5) comprises a continuous or discontinuous lateral stop (541) distributed on each side of the slab (50) to laterally hold the slab, and each lateral stop In particular in the section (4) above. To avoid the use of lateral stops, the present invention also proposes another preferred embodiment based on another structural arrangement of the anti-lift device according to the present invention and illustrated in Figures 5 and 6. According to this other architectural arrangement, the head 543 of the anti-lift device 54 limits the relative movement of the head with respect to the body in a direction N perpendicular to the slip plane, At least a portion of the body 542 to create a coupling that provides relative movement of the head 543 with respect to the body 542. By way of example, the body 542 of the anti-

- a base 71 which can be used as a base for the purpose of rigidly connecting the base 71 to the compartment 4 by screwing or pouring concrete or by means of a fixed bush, A base intended to be fastened / fastened to the base 4, and

- a cylindrical rod 72 rigidly secured to the base 71 at one of its ends and comprising a disk 73 at its other end and the disk 73 has a diameter greater than the radius of the cylindrical rod 72 (E is the thickness of said disk along said direction N) with a large radius and a thickness E,

At least a portion of the disk 73 and the rod 72 are surrounded by the head 543 of the anti-lift device 54. To this end the head 543 includes a hollow cylindrical portion 82 intended to receive and guide the cylindrical rod 72 and the base 71 of the body 542 of the anti- And the other end of the hollow cylindrical portion 82 facing the hollow cylindrical cap 82 having a radius larger than the radius of the disk 73 of the body 542 of the anti- 83 so that the hollow cylindrical cap can move along the plane parallel to the slip plane while allowing a slight clearance along the direction N and move the disk 73 in the vertical direction so that the disk is held in the vertical direction (E) so as to be able to accommodate the thickness (E). According to this other preferred embodiment, the interior of the cylindrical cap 83 captures the disc 73 and acts as a stop. Advantageously, the interior of the cylindrical cap 83 and / or the hollow cylindrical portion 82 is covered with an anti-friction material to facilitate their relative sliding when the body and head are in contact. Preferably, the lift-off device is intended to be located below the continuous slab, the body 542 is secured to the compartment 4, and the head 543 is secured to the slab. Of course, one skilled in the art can create the opposite apparatus with the body fixed to the slab and the head fixed to the compartment, or the concept of the lateral stop, And the head is fixed to the slab or vice versa. Figure 6 shows a top view of the installation of one or more anti-lift devices 54 in the slab 50 according to another preferred embodiment finally viewed.

Other structural arrangements 54R and 54E for the body 542 and the head 543 according to the present invention may be created by those skilled in the art and all of the other structural arrangements 54R and 54E Which on the one hand allow a minute clearance along the direction N and on the other hand to the body in a plane parallel to the slip plane when the anti-lift device is mounted on / in the continuous running track according to the invention And retains the head in a vertical direction with respect to the body while allowing said relative movement of said head relative to said body. These other structural arrangements 54R, 54E are also shown in Fig. By way of example, the body may include a base intended to be anchored / fastened to the compartment 4, the base being attached to a rod or a substantially vertical structure, And the substantially horizontal structure has a regular thickness E and the shape is oval or oval, for example, as shown by reference numerals 54E and 54R, respectively, and the horizontal plane (i.e., Section of the substantially horizontal structure along a plane parallel to the slip plane when installed in the track has a dimension greater than that of the rod or vertical structure along a plane parallel to the horizontal plane. The head itself having a shape suitable for surrounding / capturing / capturing the substantially horizontal structure to allow relative movement of the head relative to the body and surrounding at least a portion of the rod or substantially vertical structure, The movement allowed along the length is particularly greater than the allowable movement along the width of the oval shape. To this end, the head 543 includes a hollow portion intended to receive and guide the rod or vertical structure, and the hollow portion of the body 542, which is directed toward the base of the body 542 of the anti- The end of which is open and the other end of which has an internal height greater than or approximately equal to the thickness E to accommodate the substantially horizontal structure and having a dimension greater than the external dimension of the substantially horizontal structure, Lt; / RTI > The hollow cap is thus preferably so that the movement allowed for said substantially horizontal structure inside said cap is greater in the direction (length) of the longitudinal axis of said horizontal structure than its movement in the direction of its lateral axis Harmonious. According to these other structural arrangements 54E, 54R, the anti-lift device is configured to be mounted in / on the continuous track so that the longitudinal axis of the ovate structure is aligned with the longitudinal axis of the track or slab. Advantageously, these other structural arrangements of the anti-lift device according to the invention facilitate the longitudinal movement of the slab relative to its lateral movement.

Advantageously, the anti-lift device 54 according to the other structural arrangement facilitates the construction of the track 5. In fact, during the construction of the track, for example, positioning of the body 542 of each anti-lift device 54 relative to the compartment 4 or the lateral stop 541 of the leg 1, And the head 543 of the lifting device is initially kept free. Subsequently, the continuous slab 50 may be configured to be rigidly connected only to the head 543 of the anti-lift device. In this way, the continuous slab 50 and the section 4 are vertically joined to allow vertical movement for the slab 50, while allowing the slab to move simultaneously in a plane parallel to the slip plane. Indeed, by way of example, because the rod 72 of the body 542 and the disk 73 have a radius that is smaller than the radius of each of the cap 83 and the hollow cylindrical portion 82 of the head 543 of the anti-lift device , This radial deviation permits a degree of freedom of movement of the head 543 of the anti-lift device relative to the body 542 when the body is secured to the compartment 4. Preferably, an elastic or compressible material is present between the hollow portion, e.g. between the hollow cylindrical portion 82 and the rod 72 and / or between the cap 83 and the substantially horizontal structure, And is against the movement of the rod 72 in the hollow portion. By way of example and for this purpose, the rod 72 and / or the outer cylindrical surface of the disk 73 is covered with a layer of the resilient / compressible material. The body 542 and the head 543 themselves are preferably made of metal.

Preferably, the continuous track 5 comprises at least one alternating pier 51, 52 at each of the ends of the continuous slab 50 along its length, which are arranged in the longitudinal direction of the continuous slab 50, Respectively. The alternating piers 51, 52 may be fixed to the end alternating leg 31 of the leg or to a raft 32, for example.

In summary, the present invention proposes a continuous track on a bridge structure comprising a deck, i.e. a slab completely separated from the surface formed by the upper surface of the leg section, which thus acts as an example during the lifting of the slab 50 To ensure free movement of the slab on the deck, while restricting vertical and / or lateral movement of the slab by means of a lifting device capable of receiving a vertical force on the deck and further a lateral force on the deck, In particular with the lateral stop for said reception of transverse forces. The traveling track according to the present invention may thus be arranged laterally on each side of the slab 50, for example as shown in Figures 1-4, and / or as an example, as shown in Figures 5 and 6, And a plurality of lifting-preventing devices fixed to the slab and distributed along the length thereof.

Claims (15)

A continuous running track (5) intended to be supported by a leg structure (1) comprising at least two leg sections (4) and a load bearing structure for supporting said sections (4)
- continuous slabs (50) extending from one end of the leg (1) to the other end and intended to rest on the upper surface of the section (4)
An anti-friction layer (55) disposed below the continuous slab (50) and intended to act as an interface between the upper surface of the section (4) and the lower surface of the continuous slab (50) The anti-friction layer 55 forming a slip plane for < RTI ID = 0.0 >
A cross plate (53) arranged below the continuous slab (50), positioned to extend from one end of the one section to the end of the immediately adjacent section,
In the running track 5,
The traveling track 5 is arranged in a section 4 which is capable of limiting the movement of the slab 50 in the direction N perpendicular to the slip plane while providing freedom of movement of the slab 50 on the slip plane Characterized in that it comprises at least one anti-lift device (54) intended to be fixed. 2. A slider according to claim 1, characterized in that the anti-lift device (54) comprises a stop which is intended to limit said movement of said slab (50) in a direction (N) ). 3. The apparatus according to claim 2, characterized in that the anti-lift device (54) is configured to allow non-zero movement of the slab (50) in a direction (N) perpendicular to the slip plane by up to the stop Track (5). 4. Device according to any one of the preceding claims, characterized in that it comprises a plurality of anti-lift devices (54) distributed along each side of each side of the slab (50) laterally and fixed to the slab (5). ≪ / RTI > 5. A method according to any one of claims 1 to 4, wherein the anti-friction layer (55) comprises a first geotextic layer (551) and a second geotextile layer 552). ≪ / RTI > 6. A running track (5) according to any one of claims 1 to 5, characterized in that the slab (50) is self-draining. A traveling track (5) according to any one of claims 1 to 6, characterized in that it comprises an electric cable duct located in the slab (50). A running track (5) according to any one of the preceding claims, characterized in that it comprises at least one alternating pier (51, 52) at each of the ends of the continuous slab (50) . 9. A device according to any one of the preceding claims, characterized in that the anti-lift device (54) comprises a body (542) designed to be secured to said section (4) And a head (543) designed to limit the movement of the drive shaft (50). 10. The apparatus of claim 9, wherein the body (542) is a plate configured to be secured to the compartment (4) and the head (543) comprises at least one portion of one of the lateral sides of the upper surface of the continuous slab And is fixed to one end of the plate so as to be positioned so as to protrude upwardly and to be opposed to each other. 11. The method of claim 10, wherein the head (543) is substantially parallelepiped in shape and has a layer of anti-friction and compressive resistant material (544) intended to contact the slab (50) (5). ≪ / RTI > 10. The apparatus of claim 9, wherein the head (543) of the anti-lift device (54) limits relative movement of the head (543) relative to the body (542) in a direction N perpendicular to the slip plane, And at least a portion of the body (542) is enclosed to create a coupling that provides relative movement of the head (543) relative to the body (542) in a direction parallel to the slip plane. 13. A device according to claim 12, characterized in that the body (542) of the anti-lift device (54) comprises a base (71) intended to be fastened / fastened to said compartment (4) At least a portion of the rod (72) and the substantially horizontal structure (73) comprise a substantially horizontal structure (73) at the other end of the lifting device (54) Is surrounded by the head (543). Characterized in that the leg structure comprises at least two compartments (4) intended to support the continuous slab (5) of the track (5) Wherein the lift preventing device comprises:
A main body 542 designed to be secured to the compartment 4 in a direction substantially perpendicular to the upper surface of the slab 5 while permitting movement of the slab in a plane substantially parallel to the upper surface of the slab 5 (54) designed to limit the movement of the slab (50) to a predetermined height (N). 15. An elevating prevention device (54) according to claim 14, characterized in that the head (543) comprises a stop to limit non-zero movement of the slab (50) in the direction (N).

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