EP0499598B1 - Railway sleeper and process for its production - Google Patents
Railway sleeper and process for its production Download PDFInfo
- Publication number
- EP0499598B1 EP0499598B1 EP92870023A EP92870023A EP0499598B1 EP 0499598 B1 EP0499598 B1 EP 0499598B1 EP 92870023 A EP92870023 A EP 92870023A EP 92870023 A EP92870023 A EP 92870023A EP 0499598 B1 EP0499598 B1 EP 0499598B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cross
- reinforcement
- concrete blocks
- moulds
- sleeper
- 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.)
- Expired - Lifetime
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- 241001669679 Eleotris Species 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims abstract description 6
- 230000002787 reinforcement Effects 0.000 claims abstract description 37
- 239000004567 concrete Substances 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000003550 marker Substances 0.000 claims 2
- 125000006850 spacer group Chemical group 0.000 description 35
- 238000004873 anchoring Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 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
- E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
- E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
- E01B3/36—Composite sleepers
Definitions
- the subject of the present invention is a railway sleeper made up of two reinforced concrete blocks connected by a metal spacer, each of the concrete blocks comprising two shoulders for a rail.
- the spacer and the reinforcements of each of the two concrete blocks of a sleeper are formed from several elements which are free relative to each other, the aforementioned reinforcements, generally consisting each of a helical reinforcement arranged around the spacer, of a lower reinforcement made of steel strands, substantially parallel to the sole of the concrete block and to the longitudinal axis of the spacer, joined together by transverse welded strands and an upper frame made of steel strands, substantially parallel to the upper face of the block and extending along the longitudinal axis of the spacer, the latter strands also being joined together by welded transverse strands.
- crosspieces have, on the one hand, the disadvantage of requiring, for their manufacture, the manipulation and the precise positioning in the molds of the various spare parts forming the reinforcements of the concrete blocks and the spacer and, on the other hand share, the disadvantage of causing a scrap which can be significant and which is due either to a bad installation of the aforementioned spare parts in the molds, or to the accidental displacements of these last in the molds during the pouring of concrete.
- GB-B-622.776 represents a cross member of the kind cited above in which irons making up the reinforcement of a block are only passed through the spacer.
- the object of the invention is to remedy these drawbacks and to provide a cross member, the production of which is greatly simplified compared with that of known cross members, and this, by reducing, during the casting of the cross member, by more than 50%. the number of spare parts that make it up and whose quality is better and more constant than that of known sleepers due to the extremely precise positioning of the spacer and the reinforcements of the concrete blocks.
- the reinforcement of each of the two aforementioned concrete blocks and the spacer have mutual rigid fixing means, prior to the pouring of the concrete and independently of the setting of the latter.
- the reinforcement of each of the two aforementioned concrete blocks is not in contact with the part of the abovementioned shoulders embedded in the block to constitute their anchoring.
- the reinforcement of each of the two aforementioned concrete blocks comprises a helical reinforcement disposed around the aforementioned spacer and, on either side thereof, a reinforcement lower and an upper frame essentially consisting of steel strands extending along the longitudinal axis of the spacer and regularly distributed below and above said spacer.
- the invention also relates to a method of manufacturing the aforementioned crosspiece.
- said method consists of depositing in two openings provided in the bottom of each of the two molds. in which the two aforementioned concrete blocks are formed, a pair of shoulders, one part of which extends outside the mold to form the shoulder of the rail proper and the other part of which extends inside of the mold to form the anchoring of the shoulder in the concrete block, to deposit the spacer and the reinforcement of each of the concrete blocks.
- Figure 1 is an elevational view showing, in broken lines, one of the concrete blocks of the sleeper according to the invention and, in solid lines, the two shoulders anchored in the block, the reinforcement of said block and, with partial breakage , the crosspiece spacer partially embedded in the block.
- Figure 2 is a sectional view along line II-II of Figure 1.
- FIG. 3 is a view in elevation and in section of the casting mold of one of the concrete blocks of the crosspiece in which the two abovementioned shoulders have been placed and the crosspiece assembly of the crosspiece and reinforcement of said block, before casting concrete, in accordance with the process according to the invention.
- Figure 4 is a view similar to Figure 2 and shows a variant of connection of the frame of a block to the spacer of the crosspiece.
- the railroad cross member consists of two reinforced concrete blocks 1 connected by a metal spacer 2 in the form of an angle iron, each of the blocks 1 comprising two shoulders 3 intended to be arranged on either side other of the shoe of a rail (not shown) to prevent any lateral movement of the latter and intended to cooperate each with a toad (not shown) associated with the shoulder and the shoe of the rail to hold the shoe of the rail against the corresponding block of the crosspiece.
- the frame 4 of each of the two concrete blocks I of the cross member is fixed to the spacer 2 connecting the blocks so that the frames 4 and the spacer 2 form a rigid and non-deformable assembly.
- the anchoring tabs 5 of the shoulders 3 are profiled, as shown in FIG.
- the armature 4 of the blocks 1 is not in contact with the anchoring lugs 5 of the shoulders 3 so that the vibrations undergone by the latter and by their lugs 5 are not directly transmitted to the armature 4 of the blocks 1, which has the advantage of avoiding cracking of said blocks.
- each of the concrete blocks 1 is constituted by a helical frame 6 arranged around the spacer 2 and a lower frame 7 and an upper frame 8 arranged on either side of said spacer .
- These frames 7 and 8 each comprise steel strands 9 which extend along the longitudinal axis of the spacer 2 and which are regularly distributed below and above the latter.
- the steel strands 9 of each of the reinforcements 7 and 8 are joined together by at least two steel strands 10 which extend transversely to the longitudinal axis of the spacer 2 and which are welded to the steel strands 9 at each crossing point 11 of said strands 9 and 10.
- the helical frame 6 is, as shown in Figures 1 to 3, in contact, on the one hand, with the upper edge 12 of the spacer 2 and is welded thereto in at least two places 13 and, d on the other hand, with at least two of the steel strands 9 forming part of the aforementioned lower reinforcement 7, the reinforcement 6 being welded to each of these steel strands 9 in at least two places 14.
- the upper reinforcement 8 is located at a distance from the helical frame 6 and is fixed to the bottom frame 7 by two stirrups 15 which are welded, at 16, to at least two steel strands 9 from each of the frames 7 and 8.
- the method of manufacturing the cross member described above and which is illustrated in FIG. 3 consists in placing in two openings 17 formed in the bottom 18 of each of the two molds serving to form the two blocks 1 of a cross member, a pair shoulders 3 whose anchoring lugs 5 extend inside the mold, to deposit the spacer 2 of the crosspiece, to which are fixed the armatures 4 for the blocks 1 in the molds through a calibrated opening 19 provided in the walls 21 of the molds facing one another, these openings being arranged to locate automatically and correctly the spacer 2 and the frames 4 relative to the bottoms 18 of the molds.
- a mark 20 is provided on the spacer 2 to allow the correct location of the spacer 2 carrying the frames 4 in the molds, in a direction parallel to the longitudinal axis of the spacer 2.
- each of the calibrated openings 19 is closed using a plate 22 applied to the internal face of the wall 21 of the mold, the concrete is poured, the latter is vibrated and the crosspiece is demolded , by turning the molds over.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Reinforcement Elements For Buildings (AREA)
- Press Drives And Press Lines (AREA)
- Chain Conveyers (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Moulding By Coating Moulds (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Railway Tracks (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
La présente invention a pour objet une traverse pour chemin de fer constituée de deux blocs de béton armé reliés par une entretoise métallique, chacun des blocs de béton comportant deux épaulements pour un rail.The subject of the present invention is a railway sleeper made up of two reinforced concrete blocks connected by a metal spacer, each of the concrete blocks comprising two shoulders for a rail.
Dans les traverses connues (cf. EP-A-0 054 983), du type susdit, l'entretoise et les armatures de chacun des deux blocs de béton d'une traverse sont formées de plusieurs éléments libres les uns par rapport aux autres, les armatures susdites, étant généralement constituées chacune d'une armature hélicoïdale disposée autour de l'entretoise, d'une armature inférieure constituée de brins d'acier, sensiblement parallèles à la semelle du bloc en béton et à l'axe longitudinal de l'entretoise, réunis entre eux par des brins transversaux soudés et d'une armature supérieure constituée de brins d'acier, sensiblement parallèles à la face supérieure du bloc et s'étendant suivant l'axe longitudinal de l'entretoise, ces derniers brins étant également réunis entre eux par des brins transversaux soudés. Ces traverses présentent, d'une part, l'inconvénient de nécessiter, pour leur fabrication, la manipulation et la mise en place précise dans les moules des diverses pièces détachées formant les armatures des blocs de béton et l'entretoise et, d'autre part, l'inconvénient d'entraîner un rebut qui peut être important et qui est dû soit à une mauvaise mise en place des pièces détachées susdites dans les moules, soit aux déplacements accidentels de ces dernières dans les moules lors de la coulée du béton.In known sleepers (cf. EP-A-0 054 983), of the aforementioned type, the spacer and the reinforcements of each of the two concrete blocks of a sleeper are formed from several elements which are free relative to each other, the aforementioned reinforcements, generally consisting each of a helical reinforcement arranged around the spacer, of a lower reinforcement made of steel strands, substantially parallel to the sole of the concrete block and to the longitudinal axis of the spacer, joined together by transverse welded strands and an upper frame made of steel strands, substantially parallel to the upper face of the block and extending along the longitudinal axis of the spacer, the latter strands also being joined together by welded transverse strands. These crosspieces have, on the one hand, the disadvantage of requiring, for their manufacture, the manipulation and the precise positioning in the molds of the various spare parts forming the reinforcements of the concrete blocks and the spacer and, on the other hand share, the disadvantage of causing a scrap which can be significant and which is due either to a bad installation of the aforementioned spare parts in the molds, or to the accidental displacements of these last in the molds during the pouring of concrete.
Le GB-B-622.776 représente une traverse du genre cité ci-dessus dans laquelle des fers composant l'armature d'un bloc ne sont que passés à travers l'entretoise.GB-B-622.776 represents a cross member of the kind cited above in which irons making up the reinforcement of a block are only passed through the spacer.
L'invention a pour but de remédier a ces inconvenients et de procurer une traverse dont la réalisation est fortement simplifiée par rapport à celle des traverses connues et ce, grâce à une réduction , lors de la coulée de la traverse, de plus de 50 % du nombre de pièces détachées qui la constituent et dont la qualité est meilleure et plus constante que celle des traverses connues du fait du positionnement extrêmement précis de l'entretoise et des armatures des blocs de béton.The object of the invention is to remedy these drawbacks and to provide a cross member, the production of which is greatly simplified compared with that of known cross members, and this, by reducing, during the casting of the cross member, by more than 50%. the number of spare parts that make it up and whose quality is better and more constant than that of known sleepers due to the extremely precise positioning of the spacer and the reinforcements of the concrete blocks.
A cet effet, suivant l'invention, l'armature de chacun des deux blocs de béton précités et l'entretoise présentent des moyens de fixation rigide mutuels, préalablement à la coulée du béton et indépendamment de la prise de ce dernier.To this end, according to the invention, the reinforcement of each of the two aforementioned concrete blocks and the spacer have mutual rigid fixing means, prior to the pouring of the concrete and independently of the setting of the latter.
Suivant un mode de réalisation avantageux de l'invention, l'armature de chacun des deux blocs de béton précités n'est pas en contact avec la partie des épaulements susdits noyée dans le bloc pour constituer leur ancrage.According to an advantageous embodiment of the invention, the reinforcement of each of the two aforementioned concrete blocks is not in contact with the part of the abovementioned shoulders embedded in the block to constitute their anchoring.
Suivant une forme de réalisation particulièrement avantageuse de l'invention, l'armature de chacun des deux blocs de béton susdits comprend une armature en hélice disposée autour de l'entretoise précitée et, de part et d'autre de celle-ci, une armature inférieure et une armature supérieure constituées essentiellement de brins d'acier s'étendant suivant l'axe longitudinal de l'entretoise et régulièrement répartis en dessous et au-dessus de ladite entretoise.According to a particularly advantageous embodiment of the invention, the reinforcement of each of the two aforementioned concrete blocks comprises a helical reinforcement disposed around the aforementioned spacer and, on either side thereof, a reinforcement lower and an upper frame essentially consisting of steel strands extending along the longitudinal axis of the spacer and regularly distributed below and above said spacer.
L'invention a également pour objet un procédé de fabrication de la traverse précitée.The invention also relates to a method of manufacturing the aforementioned crosspiece.
Suivant l'invention. ledit procédé consiste à déposer dans deux ouvertures prévues dans le fond de chacun des deux moules. dans lesquels sont formés les deux blocs de béton précités, une paire d'épaulements dont une partie s'étend à l'extérieur du moule pour former l'épaulement du rail proprement dit et dont l'autre partie s'étend à l'intérieur du moule pour former l'ancrage de l'épaulement dans le bloc de béton, à déposer l'entretoise et l'armature de chacun des blocs de béton. qui constituent un seul élément, dans les moules qui présentent dans leurs faces tournées l'une vers l'autre une ouverture calibrée pour permettre l'introduction de l'entretoise dudit élément en localisant la position de ce dernier exactement par rapport aux fonds des moules, un repère étant avantageusement prévu sur l'entretoise pour localiser exactement l'élément par rapport aux moules suivant une direction parallèle à l'axe longitudinal de l'entretoise. à obturer l'ouverture calibrée susdite par l'intérieur des moules, à couler le béton, à le vibrer et à démouler la traverse, par retournement des moules.According to the invention. said method consists of depositing in two openings provided in the bottom of each of the two molds. in which the two aforementioned concrete blocks are formed, a pair of shoulders, one part of which extends outside the mold to form the shoulder of the rail proper and the other part of which extends inside of the mold to form the anchoring of the shoulder in the concrete block, to deposit the spacer and the reinforcement of each of the concrete blocks. which constitute a single element, in molds which have in their faces turned towards one another an opening calibrated to allow the introduction of the spacer of said element by locating the position of the latter exactly relative to the bottoms of the molds , a mark being advantageously provided on the spacer to locate the element exactly relative to the molds in a direction parallel to the longitudinal axis of the spacer. to close the above-mentioned calibrated opening from the inside of the molds, to pour the concrete, to vibrate it and to unmold the cross-member, by turning the molds over.
D'autres détails et particularités de l'invention ressortiront de la description des dessins annexés au présent mémoire et qui illustrent, à titre d'exemples non limitatifs, deux formes de réalisation particulières de la traverse suivant l'invention et le procédé de fabrication de cette traverse.Other details and particularities of the invention will emerge from the description of the drawings appended to this specification and which illustrate, by way of non-limiting examples, two particular embodiments of the crosspiece according to the invention and the method of manufacturing this cross.
La figure 1 est une vue en élévation montrant, en traits interrompus, un des blocs de béton de la traverse suivant l'invention et, en traits pleins, les deux épaulements ancrés dans le bloc, l'armature dudit bloc et, avec brisure partielle, l'entretoise de la traverse partiellement noyée dans le bloc.Figure 1 is an elevational view showing, in broken lines, one of the concrete blocks of the sleeper according to the invention and, in solid lines, the two shoulders anchored in the block, the reinforcement of said block and, with partial breakage , the crosspiece spacer partially embedded in the block.
La figure 2 est une vue en coupe suivant la ligne II-II de la figure 1.Figure 2 is a sectional view along line II-II of Figure 1.
La figure 3 est une vue en élévation et en coupe du moule de coulée d'un des blocs de béton de la traverse dans lequel ont été posés les deux épaulements susdits et l'ensemble entretoise de la traverse et armature dudit bloc, avant la coulée du béton et ce, conformément au procédé suivant l'invention.FIG. 3 is a view in elevation and in section of the casting mold of one of the concrete blocks of the crosspiece in which the two abovementioned shoulders have been placed and the crosspiece assembly of the crosspiece and reinforcement of said block, before casting concrete, in accordance with the process according to the invention.
La figure 4 est une vue analogue à la figure 2 et montre une variante de liaison de l'armature d'un bloc à l'entretoise de la traverse.Figure 4 is a view similar to Figure 2 and shows a variant of connection of the frame of a block to the spacer of the crosspiece.
Dans les différentes figures, les mêmes notations de référence désignent des éléments identiques ou analogues.In the various figures, the same reference notations designate identical or analogous elements.
La traverse pour chemin de fer suivant l'invention et illustrée aux dessins est constituée de deux blocs de béton armé 1 reliés par une entretoise métallique 2 en forme de cornière, chacun des blocs 1 comportant deux épaulements 3 destinés à être disposés de part et d'autre du patin d'un rail (non représenté) pour empêcher tout mouvement latéral de ce dernier et destinés à coopérer chacun avec un crapaud (non représenté) associé à l'épaulement et au patin du rail pour maintenir le patin du rail contre le bloc correspondant de la traverse. L'armature 4 de chacun des deux blocs I de béton de la traverse est fixée à l'entretoise 2 reliant les blocs de manière à ce que les armatures 4 et l'entretoise 2 forment un ensemble rigide et indéformable. Les pattes d'ancrage 5 des épaulements 3 sont profilées, comme montré à la figure 1, pour maintenir fermement les épaulements dans les blocs et éviter leur arrachage. Avantageusement, l'armature 4 des blocs 1 n'est pas en contact avec les pattes d'ancrage 5 des épaulements 3 de sorte que les vibrations subies par ces derniers et par leurs pattes 5 ne sont pas directement transmises à l'armature 4 des blocs 1, ce qui a pour avantage d'éviter la fissuration desdits blocs.The railroad cross member according to the invention and illustrated in the drawings consists of two reinforced
L'armature 4 de chacun des blocs de béton 1 est constituée par une armature en hélice 6 disposée autour de l'entretoise 2 et d'une armature inférieure 7 et d'une armature supérieure 8 disposées de part et d'autre de ladite entretoise. Ces armatures 7 et 8 comprennent chacune des brins d'acier 9 qui s'étendent suivant l'axe longitudinal de l'entretoise 2 et qui sont régulièrement répartis en dessous et au-dessus de celle-ci.The
Les brins d'acier 9 de chacune des armatures 7 et 8 sont réunis entre eux par au moins deux brins d'acier 10 qui s'étendent transversalement à l'axe longitudinal de l'entretoise 2 et qui sont soudés aux brins d'acier 9 à chaque point de croisement 11 desdits brins 9 et 10.The
L'armature en hélice 6 est, comme montré aux figures 1 à 3, en contact, d'une part, avec le bord supérieur 12 de l'entretoise 2 et est soudée à celle-ci en au moins deux endroits 13 et, d'autre part, avec au moins deux des brins d'acier 9 faisant partie de l'armature inférieure 7 susdite, l'armature 6 étant soudée à chacun de ces brins d'acier 9 en au moins deux endroits 14. L'armature supérieure 8 est située à distance de l'armature en hélice 6 et est fixée à l'armature inférieure 7 par deux étriers 15 qui sont soudés, en 16, à au moins deux brins d'acier 9 de chacune des armatures 7 et 8.The
Le procédé de fabrication de la traverse décrite ci-dessus et qui est illustré à la figure 3 consiste à disposer dans deux ouvertures 17 ménagées dans le fond 18 de chacun des deux moules servant à former les deux blocs 1 d'une traverse, une paire d'épaulements 3 dont les pattes d'ancrage 5 s'étendent à l'intérieur du moule, à déposer l'entretoise 2 de la traverse, à laquelle sont fixées les armatures 4 pour les blocs 1 dans les moules à travers une ouverture calibrée 19 prévue dans les parois 21 des moules tournées l'une vers l'autre, ces ouvertures étant agencées pour localiser automatiquement et correctement l'entretoise 2 et les armatures 4 par rapport aux fonds 18 des moules. Un repère 20 est prévu sur l'entretoise 2 pour permettre la localisation correcte de l'entretoise 2 portant les armatures 4 dans les moules, suivant une direction parallèle à l'axe longitudinal de l'entretoise 2. Les dimensions des ouvertures calibrées 19 et la position du repère 20 sur l'entretoise 2 sont choisies pour que les armatures 4 susdites n'entrent pas en contact avec les pattes d'ancrage 5 des épaulements 3. Après mise en place, en une seule opération, de l'entretoise 2 et des armatures 4 dans les moules, on obture chacune des ouvertures calibrées 19 à l'aide d'une plaque 22 appliquée sur la face interne de la paroi 21 du moule, on coule le béton, on vibre ce dernier et on démoule la traverse, par retournement des moules.The method of manufacturing the cross member described above and which is illustrated in FIG. 3 consists in placing in two
Il doit être entendu que l'invention n'est nullement limitée aux formes de réalisation décrites et que bien des modifications peuvent être apportées à ces dernières sans sortir du cadre du présent brevet.It should be understood that the invention is in no way limited to the embodiments described and that many modifications can be made to these without departing from the scope of this patent.
C'est ainsi que l'on pourrait, comme montré à la figure 4, fixer les étriers 15, qui réunissent les armatures inférieure 7 et supérieure 8 faisant partie de l'armature 4 d'un bloc de béton 1, à la cornière constituant l'entretoise 2 de la traverse, cette fixation des étriers à l'entretoise s'effectuant par soudure aux points 23.This is how one could, as shown in FIG. 4, fix the
Claims (7)
- Railway sleeper consisting of two reinforced concrete blocks (1) connected by a metal cross-member (2), each of the concrete blocks including two shoulders (3) for a rail, the said sleeper being characterized in that the reinforcement (4) of each of the two aforementioned concrete blocks (1) and the cross-member (2) has means for rigid interconnection, prior to the pouring of the concrete and independently of setting of the latter.
- Sleeper according to Claim 1, characterized in that the reinforcement (4) of each of the two aforementioned concrete blocks (1) is not in contact with the part of the abovementioned shoulders (3) embedded in the block to constitute their anchorage (5).
- Sleeper according to either of Claims 1 and 2, characterized in that the reinforcement (4) of each of the two abovementioned concrete blocks (1) comprises a coiled reinforcement (6) arranged around the aforementioned cross-member and, on either side of the latter, a lower reinforcement (7) and an upper reinforcement (8) which essentially consist of steel strands (9) extending along the longitudinal axis of the cross-member (2) and regularly distributed below and above the said cross-member.
- Sleeper according to Claim 3, characterised in that the abovementioned steel strands (9) constituting each of the said lower (7) and upper (8) reinforcements are joined together by at lesst two steel strands (10) extending conversely to the longitudinal axis of the cross-member (2), these two strands (10) being welded, at each intersection point (11), to the steel strands (9) extending along the longitudinal axis of the cross-member (2).
- Sleeper according to either of Claims 3 and 4, characterized in that the coiled reinforcement (6) is in contact, on the one hand, with the upper part (12) of the cross-member (2) and is welded to the latter at at least two points (13) and, on the other hand, with at least two of the steel strands (9), which constitute the lower reinforcement (7) and which extend along the axis of the cross-member (2), and is welded to each of these strands at at least two points (14), the abovementioned upper reinforcement (8) being located at a distance from the coiled reinforcement (6) and being fixed to the lower reinforcement (7) by at least two stirrup-pieces (15) weided to at least two strands (9) which extend along the longitudinal axis of the cross-member.
- Method of manufacture of the sleeper according to any one of Claims 1 to 5, characterized in that in that it consists in placing a pair of shoulders (3) in two openings (17) provided in the bottom (18) of each of the two moulds in which the two aforementioned concrete blocks (1) are formed, a part of which pair of shoulders extends outside the mould to form the shoulder of the rail proper and the other part of which extends inside the mould to form the anchorage (5) of the shoulder in the concrete block, in placing the cross-member (2) and the reinforcement (4) of each of the concrete blocks, which constitute a single element, in the moulds which have in their mutually facing walls (21) a calibrated opening (19) to allow the cross-member (2) of the said element to be introduced while localizing the position of the latter exactly relative to the bottoms (18) of the moulds, a marker (20) being advantageously provided on the cross-member (2) to exactly localize the element relative to the moulds along a direction parallel to the longitudinal axis of the cross-member, enclosing the abovementioned calibrated opening (19) via the interior of the moulds, in pouring the concrete, in vibrating it and in releasing the sleeper from the moulds by inverting them.
- Method according to Claim 6, characterized in that the calibrated openings (19) are made in the moulds and the location of the aforementioned marker (20) on the cross-member (2) is chosen in such a way that the abovementioned reinforcement (4) of each of the concrete blocks (1) of the sleeper is not in contact with the anchorages (5) of the shoulders (3) located in the moulds.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9100140A BE1004494A6 (en) | 1991-02-14 | 1991-02-14 | Traverse for railways and manufacturing method thereof. |
| BE9100140 | 1991-02-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0499598A1 EP0499598A1 (en) | 1992-08-19 |
| EP0499598B1 true EP0499598B1 (en) | 1996-03-27 |
Family
ID=3885338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92870023A Expired - Lifetime EP0499598B1 (en) | 1991-02-14 | 1992-02-07 | Railway sleeper and process for its production |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0499598B1 (en) |
| AT (1) | ATE136079T1 (en) |
| BE (1) | BE1004494A6 (en) |
| CZ (1) | CZ283760B6 (en) |
| DE (1) | DE69209342D1 (en) |
| DK (1) | DK0499598T3 (en) |
| EG (1) | EG19380A (en) |
| ES (1) | ES2086721T3 (en) |
| GR (1) | GR3020246T3 (en) |
| PL (2) | PL293478A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1009251A3 (en) * | 1995-03-23 | 1997-01-07 | Cuykx Hildegarde Juliana Eugen | Railway sleeper and stirrup for making same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB622776A (en) * | 1946-04-04 | 1949-05-06 | In Acc Sempl Impresa E Gibelli | Railway sleeper of reinforced concrete |
| FR2195236A5 (en) * | 1972-08-03 | 1974-03-01 | Sateba | |
| DE3167654D1 (en) * | 1980-12-24 | 1985-01-17 | Hemiksem Betonkonst Pvba | Method of manufacturing concrete railway ties and elements used for carrying it out |
-
1991
- 1991-02-14 BE BE9100140A patent/BE1004494A6/en not_active IP Right Cessation
-
1992
- 1992-02-07 EP EP92870023A patent/EP0499598B1/en not_active Expired - Lifetime
- 1992-02-07 DE DE69209342T patent/DE69209342D1/en not_active Expired - Lifetime
- 1992-02-07 DK DK92870023.6T patent/DK0499598T3/en active
- 1992-02-07 ES ES92870023T patent/ES2086721T3/en not_active Expired - Lifetime
- 1992-02-07 AT AT92870023T patent/ATE136079T1/en active
- 1992-02-12 EG EG9092A patent/EG19380A/en active
- 1992-02-14 PL PL29347892A patent/PL293478A1/en unknown
- 1992-02-14 PL PL92104468U patent/PL55222Y1/en unknown
- 1992-02-14 CZ CS92450A patent/CZ283760B6/en unknown
-
1996
- 1996-06-18 GR GR960401625T patent/GR3020246T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK0499598T3 (en) | 1996-08-05 |
| CZ283760B6 (en) | 1998-06-17 |
| PL55222Y1 (en) | 1997-06-30 |
| EG19380A (en) | 1995-02-28 |
| GR3020246T3 (en) | 1996-09-30 |
| EP0499598A1 (en) | 1992-08-19 |
| CZ45092A3 (en) | 1993-05-12 |
| ES2086721T3 (en) | 1996-07-01 |
| ATE136079T1 (en) | 1996-04-15 |
| DE69209342D1 (en) | 1996-05-02 |
| PL293478A1 (en) | 1992-08-24 |
| BE1004494A6 (en) | 1992-12-01 |
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