JP3959368B2 - Level crossing pavement structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a level crossing pavement plate that is attached to a rail or sleeper that constitutes a track when it is necessary to form a road surface on the track at a level crossing or the like.
[0002]
[Prior art]
Conventional level crossing paving plates are described in, for example, Patent Documents 1 to 3, and the level crossing paving plates are fixed to sleepers 2 on track ballasts 3 as shown in FIG. 1 which is an embodiment of the present invention. Further, it is made of rubber and includes an in-gauge pavement plate 11 placed on the inner side between the pair of rails R, R and an outer-gauge pavement plate 12 placed on the outer side between the rails R, R.
[0003]
In the railroad crossing structure using this paving board, the paving board is placed on the sleeper 2, and bolts or screws are screwed onto the upper surface of the paving board and locked to the lower sleeper 2, or as shown in FIG. As shown, there is one that fits and locks the end face of the pavement plate into the concave abdomen of the rail (see Patent Document 1, Patent Document 2, and Patent Document 3).
[0004]
These pavement plates 11 and 12 function as road surfaces of the railroad crossing 10 by setting the height of the upper surface thereof to the height of the road surface G that follows and the height of the upper surface of the rail R.
[0005]
The pavement plates 11 and 12 are composed of a rubber having a predetermined strength and a tough core material 23 embedded in the rubber so as to have a strength capable of withstanding the load of road traffic passing thereover. A rubber having a predetermined hardness is used as the rubber on the upper surface of the plate in order to prevent it from being worn by friction with a tire or the like.
[0006]
Further, a groove is formed on the upper surface of the pavement plates 11 and 12 to prevent a crossing passer from slipping. The shape of the groove is, for example, as shown in FIG. 12, a horizontal groove portion 31 in the line direction parallel to the rail R is intermittently provided in the line direction, and a slant groove portion 33 that connects the adjacent horizontal groove portions 31 crossing each other at a predetermined angle is provided. The portion 31 and the oblique groove portion 33 form a regular hexagon, and the regular hexagon is continuously formed to form a turtle shell shape. Further, as shown in FIG. 9B, the cross-sectional shapes of the lateral groove portion 31 and the oblique groove portion 33 are V-shaped.
[0007]
In addition, as a form of the groove of the pavement board, as described in Patent Document 4, there are a plurality of columnar protrusions provided on the upper surface of the pavement board, and a recess between the adjacent protrusions is used as a groove part.
[0008]
[Patent Document 1]
Japanese Patent Publication No. 6-39761 [Patent Document 2]
Japanese Patent Publication No. 7-6163 [Patent Document 3]
Japanese Utility Model Publication No. 7-6162 [Patent Document 4]
Japanese Patent Laid-Open No. 2002-173903 (page 10, FIG. 1)
[0009]
[Problems to be solved by the invention]
In general, this type of rubber level crossing pavement, especially on rainy days, because pedestrians, bicycles and cars that pass through the level crossing may slide on the pavement, As long as strength is not sacrificed, the softest possible one is desirable. This is because the softer the rubber, the better the followability of the contacted material to the paving board.
[0010]
In addition, a minute current flows through the pair of rails on the left and right sides of the track on which this paving plate is placed, and the current constitutes a track circuit that controls the signal device and the like. The rubber pavement plate that contacts the rail must have a predetermined electric resistance value so as to ensure insulation so as not to short-circuit the rails.
[0011]
However, since the insulation performance of rubber and the blending of the rubber are closely related, when the hardness of the pavement board is changed, the above-described insulation changes depending on the blending of the rubber. Further, when the hardness is changed, the mechanical properties such as tensile strength and tear strength also change accordingly, so the strength and durability as a paving board may be lowered. For this reason, there are many restrictions on softening the pavement plate while maintaining other properties required for the pavement plate such as the insulating performance and mechanical strength of the rubber in a predetermined state.
[0012]
For the same reason, recycled rubber with a low electrical resistance value could not be used as a raw material for paving boards, so conventional paving boards could not meet the recent demand for effective use of waste. It was.
[0013]
Furthermore, the grooves formed on the surface of the conventional pavement plate exhibit a relatively anti-slip effect in the direction perpendicular to the direction in which the grooves are provided, but the anti-slip effect was less in the other directions. In addition, there is a demand for a groove that is more difficult to slip.
[0014]
In view of this, the first aspect of the present invention is to make it difficult for pedestrians, bicycles, automobiles, and the like passing through a level crossing to slip on the upper surface of the pavement plate while ensuring the insulating performance and mechanical properties of the pavement plate. In addition, the second problem is to make effective use of waste in the materials that constitute the pavement board.
[0015]
[Means for Solving the Problems]
In order to solve the first problem described above, the present invention provides a railroad crossing pavement plate structure in which a rail pavement plate is placed inside a pair of rails of a pair of rails. The part where the mechanical properties change by decreasing the hardness and limiting the hardness is limited to the upper surface of the pavement board.
[0016]
In this way, even if the hardness of the upper surface of the pavement plate is freely changed, the strength of the pavement plate itself is not greatly affected.
[0017]
Further, a configuration in which the surface layer portion is made of rubber and the surface layer portion is separated from the pair of rails at both ends in the line crossing direction may be employed. In this way, even if the insulation performance is lowered by lowering the hardness of the rubber of the surface layer portion, the surface layer portion does not touch the pair of rails, so that the insulation state between the pair of rails is maintained. Can do.
[0018]
Specifically, the inter-gauge pavement plate has ring road portions that are in contact with the inner side of the pair of rails at both ends in the line crossing direction and whose upper surface is lower than the rail upper surface, and the surface layer portion is the both wheels. It is possible to employ a configuration in which the surface layer portion is provided on the upper surface of the pavement plate excluding the edge portion, and is separated from the rail via both wheel edge portions. At this time, the material constituting the lower layer portion that contacts the rail must have insulating properties, but since the surface layer portion does not contact the rail, the material constituting the surface layer portion is lower than the lower layer portion. Since it is good also as a thing with a small electrical resistance value, the restrictions on a mixing | blending will decrease in reducing the hardness of the rubber to be used, and the manufacture becomes easy.
[0019]
Further, in order to solve the first problem, the groove form formed on the upper surface of the pavement plate is added to the horizontal groove portion over the entire length in the line direction of the pavement plate, and the vertical groove portion in the transverse direction of the line intersecting the horizontal groove portion is formed. The vertical groove portion is intermittent in the line crossing direction, and the oblique groove portion that connects the adjacent vertical groove portions intersecting at a predetermined angle is provided.
[0020]
In this way, when the contact object to the pavement plate such as a tire slides in the width direction of the railroad crossing and the direction close thereto, the contact object hits the side wall portion of the vertical groove portion and the oblique groove portion. Resists slipping. In addition, the sliding movement in the crossing direction of the track and the direction close thereto is resisted so that the side wall portions of the horizontal groove portion and the slant groove portion do not slide, which is effective in preventing slipping in each direction.
[0021]
In addition, since the vertical groove is intermittent in the line crossing direction, the vertical groove part having a wide groove width in the crossing direction, and the horizontal groove part and the oblique groove part having a narrow groove width in the line crossing direction are provided in the line crossing direction. It will be located alternately. Since convex island portions are interposed between the groove portions having different widths, the degree of rubber deformation of the island portions is different depending on each position in the line crossing direction according to the width of the adjacent groove portions. . For this reason, it can function effectively for slip prevention.
[0022]
At this time, if the bottom of each groove is made flat, a contact object such as a pedestrian shoe sole or a bicycle tire can easily come into contact with the bottom of the groove. For this reason, the point where the contact object comes into contact with the pavement plate becomes two points of the bottom part and the side wall part, and the contact area between both increases, so that it is possible to efficiently prevent slipping in both directions.
[0023]
In order to solve the second problem, the present invention uses recycled rubber as a material for a paving board having the above-described configuration or rubber containing recycled rubber, and a part of the paving board that comes into contact with a rail It covered the insulating rubber. In this way, a predetermined insulation performance can be maintained regardless of the material used for the central part of the pavement board.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
One embodiment is shown in FIGS. 1 to 6, and the railroad crossing pavement structure of this embodiment has a rail fastener 4 on a sleeper 2 on a ballast 3 of a rail, and a pair of rails R and R are connected by rail fasteners 4 as shown in FIG. A rubber-made pavement plate 11 that is fixed and placed on the inner side between the pair of rails R and R and an outer pavement plate 12 that is placed on the outer side between the rails R and R. Yes, used for level crossing 10.
[0025]
As shown in FIG. 1, both the pavement plates 11 and 12 are placed on sleepers 2, and are in the cross-track direction (arrow B in FIG. 2) which is a portion facing both the rails R of both pavement plates 11 and 12. The both ends 25 and 26 are elastically deformed to fit into the concave abdominal portion 6 between the base portion 7 and the head portion 5 of the rail R from the upper side to the lower side. The plates 11 and 12 are locked to the rail R and fixed to the track.
[0026]
At this time, as shown in FIG. 1, the in-gauge pavement plate 11 has ring road portions 28 and 28 having a predetermined width lower than the upper surface of the rail R at both ends in the line transverse direction, The both end portions 25 and 25 are positioned at the track crossing direction end edges of the ring-shaped road portions 28 and 28, respectively, abutting against the inner surface of the abdomen 6 of the pair of rails R and R, and contacting the inner surface of the head 5. It is designed not to touch. For this reason, a predetermined gap is secured between the head 5 and the side of the inner surface of the gauge between the head 5 and the pavement plate 11 so that the train wheels F do not ride on the pavement 11.
[0027]
Further, the gauge outer pavement plate 12 is configured such that one end portion 26 in the crossing direction of the track abuts on the outer surface of the abdomen 6 of the rail R and also contacts the outer surface of the head 5 without a gap. Further, the other end portion 27 of the outer gauge pavement plate 12 that does not face the rail R is in contact with the pavement 30 of the road surface G following the level crossing 10 and further away from the rail R as shown in FIG. It is restrained so as not to move.
[0028]
Both the pavement plates 11 and 12 are provided with pipe holes 24 along the rails R in the vicinity of the end portions 25 and 26, and are fixed adjacent to the line direction (the direction of arrow A in FIG. 2). The pavement plates 11, 11 or the pavement plates 12, 12 pass through the respective pipe holes 24 and one pipe P is inserted, and the pavement plates 11, 11 or 12, 12 adjacent to each other in the track direction. Are connected in the line direction. Clamps (not shown) that contact the line-direction end faces of the connected pavement plates 11, 11, 12, 12 are provided at both ends of the pipe P, and the both ends are inserted into the pipe P. The pavement plates 11, 11 or 12, 12 connected to each other are firmly fixed.
[0029]
As shown in FIGS. 3 and 5, the pavement plates 11 and 12 are divided into a surface layer portion 21 and a lower layer portion 22, and the lower layer portion 22 holds a core material 23 embedded therein. The core part 22a and the support part 22b which is a part directly touching the sleeper 2 or the ballast 3 are divided into two layers. The surface layer portion 21, the core portion 22 a of the lower layer portion 22, and the support portion 22 b have different rubber compositions depending on the performance required for each layer.
[0030]
The lower layer portion 22 is made of rubber having a hardness of 70 degrees, which is used for a general rubber paving board, and insulating rubber having a predetermined electric resistance value. In particular, the support portion 22b is made up of sleepers. Since it is a part that contacts the 2nd class and transmits the road traffic load to the sleeper 2 etc. to support the pavement board, it is made of highly durable rubber that is highly resistant to wear and hardly deteriorates.
[0031]
The surface layer portion 21 is provided between the ring-shaped road portions 28, 28 with a predetermined thickness on the entire upper surface of the pavement plate 11 excluding the ring-shaped road portion 28. They are separated from the pair of rails R, R via 28, 28, respectively. Further, the pavement plate 12 is provided with a predetermined thickness on the entire upper surface thereof.
[0032]
The predetermined thickness of the surface layer portion 21 is provided in the range of 10 mm to 15 mm from the upper surface of the pavement plate, and the hardness of the rubber is softer than that of the lower layer portion 22 in this range. This thickness can be freely set according to the depth of the groove portion provided on the surface of the pavement board, the covering thickness of the core material 23 embedded therein (the thickness of the rubber from the surface of the pavement board to the surface of the core material 23), and the like. is there.
[0033]
In general, when the rubber hardness is low, when a force is applied to the rubber by the contact object, so-called kinking accompanied by deformation of the rubber occurs, and the followability to the contact object increases, so the performance against slipping is improved. Although improved, on the other hand, the wear resistance performance of rubber deteriorates and tends to wear well. For this reason, the hardness of the rubber of the surface layer portion 21 is set to a hardness of 60 in order to enhance the function of preventing slipping and suppress the decrease in wear resistance within the allowable limit with respect to the standard setting of 70 degrees of the paving board. I am trying. However, this hardness is not limited to 60 degrees, and rubber having a hardness closer to the hardness of the lower layer portion 22 may be employed according to the environment during use. Further, when it is allowed to increase the wear amount of the pavement board depending on the usage environment, the hardness may be further softened than 60 degrees to further enhance the performance against slipping.
[0034]
In addition, rubber hardness here means the numerical value based on the measuring method prescribed | regulated to JISK6253. Further, the standard pavement board hardness setting of 70 degrees refers to the hardness measured by a predetermined measurement method under a predetermined environment, and is a standard one. The numerical value of the hardness is not limited to 70 degrees, and is a concept including a change in hardness due to a slight design change and a change due to aged hardening during use of the pavement board. This can be relatively judged from the varying hardness of the lower layer portion 22.
[0035]
A known blending method may be used for blending the rubber for setting the hardness of the surface layer portion 21 softly, for example, by softening by means such as reducing the amount of carbon black blended in the rubber raw material. Alternatively, as another means, for example, carbon black is added to soften natural rubber in synthetic rubber, which is a raw material of rubber, and on the other hand, in order to enhance other mechanical properties such as tensile strength and tear strength. Means for increasing the amount of various reinforcing materials such as silica and silica are also conceivable.
[0036]
In the above compounding, when the amount of carbon black contained in the rubber is increased, the electrical resistance value of the rubber becomes small. However, if this rubber is used only in the surface layer portion 21, the surface layer portion 21 becomes the rail R. Since there is no contact, the current flow of the track circuit is not affected.
[0037]
The insulating rubber refers to a rubber material having a resistance value equal to or higher than a predetermined electric resistance value that does not short circuit the track circuit. The specific value of the predetermined electrical resistance value is individually determined according to the environment in which the pavement board is used, that is, the specification of the track circuit to be used. The material it has is insulating rubber.
[0038]
Moreover, the groove part which has a function for preventing a slip is formed in this pavement board 11 and 12 upper surface. The shape is provided with a lateral groove portion 31 over the entire length in the line direction, a longitudinal groove portion 32 in the line transverse direction intersecting the transverse groove portion 31 is provided, and the longitudinal groove portion 32 is intermittent in the line transverse direction, An oblique groove portion 33 that connects the adjacent longitudinal groove portions 32 intersecting at a predetermined angle is provided, and each of the lateral groove portion 31, the longitudinal groove portion 32, and the oblique groove portion 33 has a flat bottom portion.
[0039]
The lateral groove portions 31 are provided at regular intervals in the line crossing direction, and the vertical groove portion 32 is provided at a central portion of the horizontal groove portion 31 so as to cross the horizontal groove portion 31 in a predetermined length in the line crossing direction. , And are provided at regular intervals in the line direction along one horizontal groove portion 31.
[0040]
The two oblique groove portions 33 branching symmetrically with respect to the longitudinal groove portion 32 from one end of the one longitudinal groove portion 32 are provided, and the other ends of the two oblique groove portions 33 intersect and are adjacent to the same lateral groove portion 31. The other oblique groove portion 32 is connected to the other end of the oblique groove portion 33 that also branches from the other longitudinal groove portion 32, and the two oblique groove portions 33 that are symmetrically branched with respect to the longitudinal groove portion 32 from the other end of the one longitudinal groove portion 32 are provided, The other end of the two oblique groove portions 33 is connected to the other end of the oblique groove portion 33 that intersects the same lateral groove portion 31 and branches off from the other end of the other longitudinal groove portion 32 that is adjacent to the other, and the adjacent longitudinal groove portion 32, 32 and the oblique groove portion 33 branched from the other end of the one end form a regular hexagon, and the connecting portion between the other ends of the oblique groove portion 33 is the end of the longitudinal groove portion 32 intersecting with another adjacent lateral groove portion 31. Part.
[0041]
That is, as shown in FIG. 6, the groove is formed in such a manner that a plurality of longitudinal groove portions 32 having a certain length in the line transverse direction perpendicular to the line direction are provided at regular intervals in the line direction, and the adjacent longitudinal groove portions. In order to form a regular hexagon having two opposing sides 32, 32, oblique groove portions 33, 33 are formed from one end of each of the longitudinal groove portions 32, 32, and the end portions of the oblique groove portions 33, 33 are connected to each other, Further, oblique groove portions 33, 33 are formed from the other ends of the longitudinal groove portions 32, 32, and the ends of the oblique groove portions 33, 33 are connected to each other. By forming a regular hexagonal groove formed by the vertical groove 32 and the oblique groove 33, a turtle shell-shaped groove is formed, and a transverse groove 31 in the line direction intersecting at the center of the vertical groove 32 is provided over the entire length in the line direction of the pavement plate. It is a thing.
[0042]
The lateral groove portion 31 has a groove depth of 4.5 mm, the other groove portions have a depth of 6 mm, and the depth of the lateral groove portion 31 is shallower than the others. For this reason, the water which flowed into the horizontal groove part 31 flows into another groove part, and water does not stagnate in the horizontal groove part 31. Further, the lateral groove portion 31 wears on the islands around the lateral groove portion 31 and wears the same height as the bottom portion of the lateral groove portion 31, thereby making it easy to quickly check the wear amount on the upper surface of the pavement plate. Has come to play a role. The depth of each groove may be set freely.
[0043]
As shown in FIG. 3 (a) or FIG. 5 (a), the groove portion continuously repeats in a plane over the entire surface of the pavement plates 11 and 12 in the intra-gauge pavement plate 11 or the outer pavement plate 12. The groove is formed as described above. At this time, in addition to the shape of the groove, it is possible to appropriately provide, for example, a company name such as a company name as shown in FIG.
[0044]
In this embodiment, the area of the island portion (portion other than the groove portion) occupying the upper surface of the pavement plate is reduced by about 33% compared to the conventional mode shown in FIG. It is supposed that the anti-slip function can be exhibited by the increase in the shape of the groove and the change in the cross-sectional shape of the groove, but is not limited to this embodiment, for example, when not seeking the function of the bottom of the groove, As the cross-sectional shape of the groove portion, a V-shaped cross section of the conventional groove portion shown in FIG. In the above embodiment, the planar shape of the groove portion is a tortoiseshell shape, but this aspect is free as long as it has the horizontal groove portion 31, the vertical groove portion 32, and the oblique groove portion 33 under the described conditions. For example, the vertical groove portion The crossing angle of 32 and the oblique groove part 33 may be changed to form a shape other than a regular hexagon, and may not necessarily be a regular hexagon.
[0045]
In this embodiment, the direction of the horizontal groove 31 is parallel to the line direction, and the vertical groove 32 is a line transverse direction orthogonal to the line direction. However, the direction of each groove is changed as necessary. Also good. For example, a configuration in which the direction of the groove portions in the embodiment is rotated by 90 °, the horizontal groove portion 31 is in the line transverse direction, and the vertical groove portion 32 is in the line direction can be considered. Further, at a crossing that intersects the track at an oblique angle, the direction of each groove portion is rotated with the longitudinal groove portion 32 in the direction of the center line of the intersecting road and the lateral groove portion 31 in the width direction of the road. Configuration is also conceivable.
[0046]
In addition, the form of the groove part of this embodiment can act effectively as an anti-slip function even in a rubber or resin paving board other than the level crossing paving boards 11 and 12 composed of the surface layer part 21 and the lower layer part 22. It is.
[0047]
Further, as another embodiment, a configuration in which recycled rubber is used for a pavement board can be adopted. Here, recycled rubber is vulcanized once and used as various rubber products. Used as a raw material (vulcanized rubber), raw material is desulfurized by various treatments, and plasticity and adhesiveness are given again. It refers to a rubber material that can be used in the same manner as raw rubber or unvulcanized rubber, or a rubber material that includes the recycled rubber.
[0048]
Specifically, when the lower layer portion 22 of the pavement plate 11 is made of this recycled rubber or rubber containing recycled rubber, the entire circumference of the annular road portion 28 that is a portion that contacts the rail R. Furthermore, as shown in FIG. 7, if the covering layer 29 made of the insulating rubber is covered, the short circuit of the track circuit can be prevented regardless of the insulating performance of the recycled rubber.
[0049]
Further, in the configuration of the paving board using the recycled rubber, when the covering layer 29 is provided and the recycled rubber of the lower layer portion 22 has a predetermined anti-slip function, as shown in FIG. The part 21 may not be provided. Moreover, as shown in FIG. 8, the structure which covered the lower layer part 22 perimeter with the said coating layer 29 is also considered. In any case, the groove portion of the above aspect can be provided on the upper surface as necessary.
[0050]
Further, in the above embodiment, the lower layer portion 22 is composed of two layers of the core portion 22a and the support portion 22b, and the entire pavement plate is composed of three layers together with the surface layer portion 21, but as another embodiment, the lower layer portion 22 The material which comprises the part 22 is unified, and it is good also as what was comprised with the raw material of two layers, the surface layer part 21 and the lower layer part 22, as the whole pavement board.
[0051]
In any of the two-layer structure and the three-layer structure, the function required for the lower layer portion 22 is to have a predetermined strength and insulation, and use insulating rubber or other resin having insulation performance. it can. Moreover, as long as it has insulation performance, you may use raw materials other than resin, such as concrete. That is, as long as it has the surface layer part 21 which is softer than the lower layer part 22 and exhibits a slip prevention function, the mode of the lower layer part 22 is free. The form of the pavement plate and the method of locking to the track in that aspect are not particularly limited.
[0052]
Further, depending on the form of the railroad track and railroad crossing, the in-gauge pavement plate 11 or the outer-gauge pavement plate 12 may be used alone, and both the in-gauge pavement plate 11 and the outer-gauge pavement plate 12 are always accompanied. It does not have to be.
[0053]
【The invention's effect】
Since the present invention has been described above, it is possible to make the upper surface of the pavement board less slippery while ensuring the insulation performance and mechanical strength of the pavement board, and also to discard the material constituting the pavement board. Effective utilization of things can be achieved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an embodiment. FIG. 2 is a perspective view of the embodiment. FIG. 3 is a detailed view of an in-gauge pavement plate, (a) is a plan view, (b) is a front view, and (c). Fig. 4A is a cross-sectional view taken along line A-A in Fig. 4A. Fig. 4D is a cross-sectional view showing a state in which the rail is locked to the rail in Fig. 1; Part (b) shows the part with rail fasteners on sleepers. FIG. 5 is a detailed view of the outer gauge pavement plate, (a) is a plan view, and (b) is a cross-sectional view taken along line BB in (a). FIG. 6C is a cross-sectional view taken along the line CC of FIG. 6A, and FIG. 6D is a side view. FIG. 6 is an enlarged view of the main part showing the form of the groove portion of the embodiment, and FIG. FIG. 7B is a sectional view taken along the line DD of FIG. 7A. FIG. 7 is a sectional view showing another embodiment. FIG. 8 is a sectional view showing another embodiment. It is a principal part enlarged view to show, (a) is a top view, (b The E-E cross-sectional view of (a) [Description of symbols]
2 sleepers 3 ballast 4 rail fastener 5 rail head 6 rail abdomen 7 rail base 10 rail crossing 11 gauge pavement board 12 gauge outer pavement board 21 surface layer part 22 lower layer part 22a middle core part 22b support part 23 core material 24 pipe hole 25, 26, 27 End portion 28 Ring edge portion 30 Pavement material 31 Horizontal groove portion 32 Vertical groove portion 33 Slanted groove portion G Road surface P Pipe R Rail

Claims (4)

In the level crossing pavement board structure in which the in-gauge pavement board (11) is placed inside the pair of rails (R, R) of the track,
The in-gauge pavement plate (11) is composed of a rubber lower layer portion (22) and a rubber surface layer portion (21) formed on the upper surface of the lower layer portion (22). The lower layer portion (22) is softer than the lower layer portion (22) and exhibits a non-slip effect, and both end portions (25, 25) in the cross-track direction of the in-gauge pavement plate (11) are formed integrally with the lower layer portion (22). Then, both end portions (25, 25) are fitted to the concave abdominal portions (6, 6) of the pair of rails (R, R), and the in-gauge pavement plate (11) is connected to the pair of rails (11). R, R) and the upper surface of both ends (25, 25) in the transverse direction of the line has an annular road portion (28) lower than the upper surface of the rail (R), and the surface layer portion ( line transverse ends of 21), the rail via the two wheels Enro portion (28, 28) (R, R) Al are separated each rubber of said lower portion (22) has an electrical resistance value which does not short circuit between the pair of rails constituting the track circuit (R, R), rubber of the surface layer portion (21) Has a lower electric resistance value than the electric resistance value of the rubber of the lower layer portion (22) . A rubber in- gauge pavement plate (11) is placed on the inner side between the pair of rails (R, R), and a rubber outer pavement plate (12 on the outer side between the pair of rails (R, R). ) In the level crossing pavement structure
Formed on the upper surfaces of the both pavement plates (11, 12) are turtle shell-shaped grooves in which grooves forming a hexagonal shape in plan view are formed, and the turtle shell-shaped grooves are a plurality of vertical groove portions (32) extending in the track crossing direction. In parallel with each other along the line direction, and the parallel vertical groove portions (32) constitute a part of the turtle shell-shaped groove, and intersect with the parallel vertical groove portions (32). A railroad crossing pavement structure characterized by forming a lateral groove portion (31) extending the entire length in the line direction of both pavement plates (11, 12) . The in-gauge pavement plate (11) is composed of a rubber lower layer portion (22) and a rubber surface layer portion (21) formed on the upper surface of the lower layer portion (22). The lower layer portion (22) is softer than the lower layer portion (22) and exhibits a non-slip effect, and both end portions (25, 25) in the cross-track direction of the in-gauge pavement plate (11) are formed integrally with the lower layer portion (22). Then, both end portions (25, 25) are fitted to the concave abdominal portions (6, 6) of the pair of rails (R, R), and the in-gauge pavement plate (11) is connected to the pair of rails (11). R, R) and the upper surface of both ends (25, 25) in the transverse direction of the line has an annular road portion (28) lower than the upper surface of the rail (R), and the surface layer portion ( line transverse ends of 21), the rail via the two wheels Enro portion (28, 28) (R, R) Al are separated each rubber of said lower portion (22) has an electrical resistance value which does not short circuit between the pair of rails constituting the track circuit (R, R), rubber of the surface layer portion (21) The railroad crossing pavement structure according to claim 2, characterized in that has an electric resistance value lower than the electric resistance value of the rubber of the lower layer part (22) . The level crossing pavement board structure according to claim 2 or 3 , wherein the depth of the groove of the transverse groove part (31) is made shallower than the depth of the groove forming the hexagon in the plan view .

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