JP2010255249A - Ballasted elastic sleeper for transition to elastic direct-coupled track - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ballasted elastic sleeper for transition to an elastic direct-coupled track, which ensures to suppress the vibration occurring due to the passing of a railroad vehicle therethrough when placed on a crushed stone ballast for use and exhibits a vibration-proof effect by maintaining the point contact between crushed stones and an elastic mat even after the ballast is re-constructed of the crushed stone ballast to a direct-coupled ballast. <P>SOLUTION: This ballasted elastic sleeper 100 for transition to an elastic direct-coupled track includes a sleeper body 110 laid down on a crushed stone ballast formed by paving crushed stones B and a vibration-proof elastic means 120 which is provided to the bottom surface side of the sleeper body 110 and interposed between the sleeper body 110 and the crushed stone ballast. The vibration-proof elastic means 120 is formed by laminating an elastic mat 121 fixed to the bottom surface of the sleeper body 110 and a flexible insulation sheet 122 fixed to the bottom surface of the elastic mat 121. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a roadbed elastic sleeper in which a vibration isolating elastic means is interposed between a sleeper body and a crushed stone bed, and in particular, an elastic direct connection that exhibits a vibration proofing effect even after transition from a crushed stone road bed to a directly connected road bed. This relates to a bedded elastic sleeper for orbital transition.

  Conventionally, a sleeper body 510 laid on a crushed stone roadbed constructed by laying crushed stone B, and a rubber or resin made of rubber or resin that is attached to the bottom surface of the sleeper body 510 and absorbs vibrations when passing through a railway vehicle A crushed stone bed sleeper 500 composed of a flat pad 520 is known (see, for example, Patent Document 1).

  In the crushed stone bed sleeper 500, as shown in FIG. 7, the flat pad 520 and the crushed stone B located at the uppermost part of the crushed stone bed are in point contact, and the total area of the bottom surface of such a flat pad 520 and the crushed stone. The area ratio with the contact area between B and the flat pad 520 is generally about 7% to 10%, and when the area ratio of about 7% to 10% is secured, the sleeper body 510 and the flat pad It is known that a railway track composed of 520 and a crushed stone bed exhibits a predetermined spring constant and smoothly absorbs and suppresses vibration generated when the railway vehicle passes.

  On the other hand, when the crushed stone bed is adopted as the road bed for railways, the crushed stone B is worn due to vibrations when passing through the railway vehicle and the gap S1 formed by being surrounded by the plurality of crushed stones B is gradually filled. It is known that the entire track sinks, and in order to suppress such railroad track sinking, the crushed stone bed is directly connected to the gap S1 between the crushed stones B by pouring a curable filler C such as concrete. It is generally done to move to.

Japanese Patent Laying-Open No. 2005-133416 (page 4, FIG. 4)

  However, in the conventional crushed stone bed sleeper 500, as shown in FIG. 8, when the crushed stone road bed is transferred to the directly-connected road bed by pouring the filler C into the crushed stone road bed, a plurality of crushed stones located at the top of the crushed stone bed bed. Since the filler C also flows into the gap S2 formed by being surrounded by B and the flat pad 520 and hardens, the entire area of the bottom surface of the flat pad 520, the hardened filler C and the crushed stone B, and the flat plate The ratio of the area between the contact pads 520 and the contact area is about 100%, that is, the direct connection floor composed of the hardened filler C and the crushed stone B and the flat pad 520 are in surface contact. The spring constant of the railway track composed of the sleeper 500 and the directly connected road floor is greatly increased, so that the vibration generated when the railway vehicle passes cannot be effectively absorbed and suppressed, and the comfort of the railway vehicle during the passage is impaired. There is a problem that that.

  Therefore, the present invention solves the conventional problems, that is, the object of the present invention is to reliably prevent vibrations caused by the passage of a railway vehicle when used on a crushed stone roadbed. Providing the elastic sleeper for the transition of the elastic direct connection track, which suppresses and maintains the point contact between the crushed stone and the elastic mat even after the transition work from the crushed stone to the direct connection floor. That is.

  The present invention according to claim 1 is provided on a sleeper main body laid on a crushed stone roadbed constructed by laying crushed stones and between the sleeper main body and the crushed stone roadbed. An anti-vibration elastic means interposed, and the anti-vibration elastic means is provided on the bottom surface of the sleeper body and absorbs vibration transmitted from the sleeper body, and on the bottom surface of the elastic mat. Absorbs and suppresses vibration transmitted from the elastic mat, and enters the elastic mat side of the curable filler supplied between the crushed stones of the crushed stone bed during the transition from the crushed stone bed to the directly connected road bed The above-mentioned problem is solved by stacking and arranging a flexible barrier sheet that prevents the above.

  The present invention according to claim 2 solves the above-described problems by the fact that the blocking sheet has a permeable or non-permeable network structure in addition to the configuration of claim 1.

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the elastic mat is disposed on both ends of the sleeper body, thereby solving the above-described problem. is there.

  The "directly connected road bed" as referred to in the elastic bed sleeper for elastically connected track of the present invention is constituted by filling and supplying a curable filler between crushed stones constituting the crushed stone bed. It means the roadbed for railways.

  According to the bedded floor elastic sleeper of the present invention according to claim 1 for transition to the elastic direct connection track, the sleeper body laid on the crushed stone road floor constituted by laying crushed stones and the bottom side of the sleeper body Provided with an anti-vibration elastic means interposed between the sleeper body and the crushed stone bed, and the anti-vibration elastic means includes an elastic mat provided on the bottom surface of the sleeper body and a flexible provided on the bottom surface of the elastic mat. The elastic mat absorbs vibrations transmitted from the sleeper main body and suppresses the vibration when the elastic mat is used by being placed on the crushed stone bed. Since the vibration transmitted from the elastic mat is absorbed and suppressed, the comfort of the railway vehicle can be improved.

  On the other hand, when a hardened filler is supplied between crushed stones in the crushed stone bed and transferred from the crushed stone bed to the directly connected road bed, it is surrounded by a plurality of crushed stones and an elastic mat located at the top of the crushed stone bed. An area ratio between the total area of the bottom surface of the elastic mat and the contact area between the crushed stone and the elastic mat in order to prevent the filler from flowing into the gap and hardening the gap in the formed gap In other words, the point contact between the crushed stone and the elastic mat can be maintained, and the elastic mat is elastically deformed using the gap with the blocking sheet interposed therebetween, so that the spring constant of the railroad track is maintained and the railway vehicle is maintained. It is possible to reliably suppress the vibration that occurs when passing through.

  According to the bedded floor elastic sleeper for elastic direct connection track transition of the present invention according to claim 2, in addition to the effect exhibited by the bedded elastic sleeper for elastic direct connection track transfer of claim 1, the blocking sheet is transmitted. The crushed stone located at the uppermost part of the crushed stone bed enters the opening or thin part of the barrier sheet, and the reticular part of the shield sheet is located at the uppermost part of the crushed stone bed. It is easy to enter the gap formed by the multiple crushed stones and elastic mats, so that it is possible to reliably avoid the filler from flowing into the gap and hardening during the transition from the crushed stone roadbed to the direct roadbed. .

  According to the bedded floor elastic sleeper for elastic direct connection track transition of the present invention according to claim 3, in addition to the effect produced by the bedded floor elastic sleeper for elastic direct connection track transfer according to claim 1 or 2, Since the elastic mats are arranged at both ends of the sleeper body, the elastic mats are arranged only at both ends of the sleeper body, which contributes to the load support of railway vehicles, and the total amount of elastic mat required is reduced. In addition, since the contact area between the crushed stone and the elastic mat is reduced to further reduce the spring constant of the railway track, the vibration isolation effect can be increased and the comfort of the railway vehicle can be improved.

The use aspect figure using the bedded floor elastic sleeper for elastic direct connection track | orbit transfer which is 1st Example of this invention. The perspective view which shows a bedded floor elastic sleeper. Sectional drawing which shows the state which mounted the bedrock elastic sleeper on the crushed stone bed. Sectional drawing which shows the state which supplied the sclerosing | hardenable filler to the crushed stone roadbed. The perspective view which shows the interruption | blocking sheet | seat used with the bedded floor elastic sleeper for elastic direct connection track | orbit transfer which is 2nd Example of this invention. The perspective view which shows the bedded floor elastic sleeper for elastic direct connection track | orbits which is 3rd Example of this invention. Sectional drawing which shows the state which mounted the sleeper for conventional crushed stone beds on a crushed stone bed. Sectional drawing which shows the state which supplied the sclerosing | hardenable filler to the crushed stone roadbed.

  The present invention provides a sleeper main body laid on a crushed stone roadbed constructed by laying crushed stones, a vibration-proof elastic means provided on the bottom side of the sleeper main body and interposed between the sleeper main body and the crushed stone roadbed. And an elastic mat provided on the bottom surface of the sleeper body for absorbing vibration transmitted from the sleeper body, and a vibration provided on the bottom surface of the elastic mat for transmitting vibration transmitted from the elastic mat. Laminating and arranging a flexible barrier sheet that suppresses absorption and prevents the curable filler filled between the crushed stones of the crushed stone bed during the transition from the crushed stone bed to the directly connected roadbed from entering the elastic mat It is configured so that vibration generated due to the passage of the railway vehicle when used on a crushed stone roadbed is reliably suppressed, and crushed stone and elasticity are also maintained after the transition from the crushed stone roadbed to the directly connected roadbed. Mac As long as it exhibits a vibration damping effect to maintain point contact between the form of the specific implementation may any be any one.

  For example, the specific type of the sleeper body in the present invention may be any of PC sleepers (concrete sleepers), wooden sleepers, synthetic sleepers, iron sleepers and the like.

  In addition, the specific material of the elastic mat incorporated in the bedded floor elastic sleeper for transferring the elastic direct connection track of the present invention is elastic and absorbs and suppresses vibration from the sleeper body when passing through the railway vehicle. Any of synthetic rubber, natural rubber, urethane rubber and the like may be used.

  In addition, regarding the specific material of the flexible barrier sheet incorporated in the bedded elastic sleeper for elastic direct connection track transfer according to the present invention, the elastic mat has a softness after the transition from the crushed stone bed to the direct connection bed. Any of polyethylene, foamed polyethylene, foamed polyurethane and the like may be used as long as it allows elastic deformation.

  In addition, specific types of curable fillers that are supplied to the crushed stone bed during the transition from the crushed stone bed to the direct road bed are any of cement (mortar), cement asphalt mortar, asphalt, curable resin, etc. Also good.

Hereinafter, a bedded floor elastic sleeper 100 for shifting to an elastic direct connection track, which is a first embodiment of the present invention, will be described with reference to the drawings.
Here, FIG. 1 is a usage pattern diagram using a bedded floor elastic sleeper that is a first embodiment of the present invention and is used for shifting an elastic direct connection track, and FIG. 2 schematically shows a bedded bed elastic sleeper. FIG. 3 is a cross-sectional view showing a partially enlarged view of a state in which a bedded elastic sleeper is placed on a crushed stone bed, and FIG. 4 is a diagram showing a curable filling of the crushed stone bed shown in FIG. It is sectional drawing which shows the state which supplied the material and moved to the direct connection road floor.

First, a bedded floor elastic sleeper 100 for moving to an elastic direct connection track, which is the first embodiment of the present invention,
A rail R for a railway vehicle is supported, and as shown in FIGS. 1 and 2, a sleeper main body 110 laid on a crushed stone road floor formed by laying crushed stone B, and a sleeper main body 110 The anti-vibration elastic means 120 is provided on the bottom surface side and interposed between the sleeper main body 110 and the crushed stone bed.

  Therefore, a specific form of the vibration isolating elastic means 120, which is the most characteristic of the bedded floor elastic sleeper 100 for transferring the elastic direct connection track of this embodiment, will be described in detail with reference to FIGS.

  As shown in FIGS. 2 and 3, the anti-vibration elastic means 120 includes an elastic mat 121 fixed to the bottom surface of the sleeper body 110 and a flexible blocking sheet 122 fixed to the bottom surface of the elastic mat 121. It is configured by stacking.

  The elastic mat 121 is made of synthetic rubber and absorbs and suppresses vibrations transmitted from the sleeper body 110 when the railway vehicle passes.

  The blocking sheet 122 is made of foamed polyethylene, and absorbs and suppresses vibrations transmitted from the elastic mat 121 when the railway vehicle passes.

  In addition, as shown in FIG. 4, when the blocking sheet 122 is transferred from the crushed stone roadbed to the directly connected roadbed by supplying a curable filler C made of concrete to the gap S1 between the crushed stones B constituting the crushed stone roadbed, A blocking sheet 122 is interposed in a gap S2 formed by being surrounded by a plurality of crushed stones B located at the top of the crushed stone bed and the elastic mat 121, and the filler C supplied to the crushed stone bed flows into the gap S2. To prevent it from curing.

  In addition, the “directly connected bed” as referred to in the bedded elastic sleeper 100 for transferring the elastic directly connected track of the present invention is configured by supplying the filler C to the gap S1 between the crushed stones B constituting the crushed stone roadbed. It means the road bed for the railway.

The bedded floor elastic sleeper 100 for transferring the elastic direct connection track of the present embodiment obtained in this way is a sleeper body 110 laid on a crushed stone roadbed constructed by laying crushed stone B, and this sleeper body. 110 is provided with an anti-vibration elastic means 120 provided between the sleeper main body 110 and the crushed stone bed, and the anti-vibration elastic means 120 is provided on the bottom surface of the sleeper main body 110. And a blocking sheet 122 provided on the bottom surface of the elastic mat 121.
Therefore, when the bedded elastic sleeper 100 for moving the elastic direct connection track of the present embodiment is placed on the crushed stone bed and used, the elastic mat 121 absorbs and suppresses vibration transmitted from the sleeper body 110. Since the blocking sheet 122 absorbs and suppresses the vibration transmitted from the elastic mat 121, the comfort of the railway vehicle can be improved.

  On the other hand, when the filler C is supplied between the crushed stones B of the crushed stone bed and is transferred from the crushed stone road bed to the directly connected road bed, it is surrounded by a plurality of crushed stones B located at the top of the crushed stone road bed and the elastic mat 121. In order to prevent the filler C from flowing into the gap S <b> 2 from being hardened by interposing the blocking sheet 122 in the gap S <b> 2 formed in this way, the entire area of the bottom surface of the elastic mat 121 and the crushed stone B and the elastic mat 121 The area ratio with the contact area between the two is maintained, that is, the point contact between the crushed stone B and the elastic mat 121 can be maintained, and the elastic mat 121 is elastically deformed using the gap S2 with the blocking sheet 122 interposed therebetween. Thus, the spring constant of the railway track is maintained, and vibrations generated when the railway vehicle passes can be surely absorbed and suppressed.

Next, a bedded floor elastic sleeper 200 for transferring an elastic direct connection track, which is a second embodiment of the present invention, will be described with reference to FIG.
Here, in the second embodiment of the present invention, the configuration other than the blocking sheet 222 in the elastic bedside elastic sleeper 200 for elastic direct connection track transfer is the same as that of the first embodiment described above. The description regarding the bedded floor elastic sleeper 100 for shifting the elastic direct connection track of the first embodiment and the reference numerals in the 100 series shown in FIGS. 1 to 4 are replaced with the reference numerals in the 200 series. Accordingly, the description of the configuration other than the blocking sheet 222 is omitted.

Therefore, a specific form of the blocking sheet 222, which is the most characteristic of the bedded elastic sleeper 200 for transferring the elastic direct connection track of this embodiment, will be described in detail with reference to FIG.
As shown in FIG. 5, the blocking sheet 222 has a permeable net-like structure, and has an opening portion 222a and a net-like portion 222b. The opening portion 222a has a size that allows the crushed stone B to partially enter. It is set.

  In addition, about the specific shape of the opening part 222a formed in the blocking sheet 222, in this embodiment, as shown in FIG. 5, it has a rectangular cross section, but any shape such as a circular cross section can be used. It may be presented.

  The blocking sheet 222 may have a non-permeable network structure having a thin portion and a thick mesh portion.

  The thus-obtained bedded elastic sleeper 200 for transfer to the elastically connected track of this embodiment is located at the top of the crushed stone bed because the blocking sheet 222 has a permeable network structure. The crushed stone B enters the opening portion 222a of the blocking sheet 222, and the mesh portion 222b of the blocking sheet 222 enters the gap S2 formed by being surrounded by the plurality of crushed stones B located at the top of the crushed stone path and the elastic mat 221. Since it becomes easy, it can avoid reliably that the filler C flows in into the gap | interval mentioned above and hardens | cures at the time of the transfer construction from a crushed stone roadbed to a direct connection roadbed.

  Further, since the blocking sheet 222 has the opening portion 222a, the crushed stone B located at the uppermost portion of the crushed stone path bed enters the opening portion 222a of the blocking sheet 222, and the crushed stone B is directly on the bottom surface of the elastic mat 221. Since the contact between the elastic mat 221 and the crushed stone B can be prevented from being damaged due to excessive pressure, the effect is enormous.

Next, a bedded floor elastic sleeper 300 for shifting to an elastic direct connection track, which is a third embodiment of the present invention, will be described with reference to FIG.
Here, in the third embodiment of the present invention, the configuration other than the vibration isolating elastic means 320 in the elastic bedside elastic sleeper 300 for moving the elastic direct connection track is the same as that of the first embodiment described above. Since it is exactly the same as the elastic sleeper 100, the description relating to the bedded floor elastic sleeper 100 for shifting the elastic direct connection track of the first embodiment, and the reference numerals in the 100s shown in FIGS. Therefore, the description of the components other than the vibration-proof elastic means 320 will be omitted.

Therefore, a specific form of the vibration-proof elastic means 320, which is the most characteristic of the bedded floor elastic sleeper 300 for transferring the elastic direct connection track of this embodiment, will be described in detail with reference to FIG.
First, as shown in FIG. 6, the anti-vibration elastic means 320 includes a pair of elastic mats 321 fixed to the bottom surface of the sleeper body 310 at both ends of the sleeper body 310 in the longitudinal direction of the sleeper, and the sleeper body. The bottom surface of the elastic mat 321 and the blocking sheet 322 fixed to the bottom surface of the sleeper body 310 are formed over the entire bottom surface of 310.

  The roadbed elastic sleeper 300 for transferring the elastic direct connection track of the present embodiment obtained in this way has elastic mats 321 disposed at both ends of the sleeper body 310, respectively, so that the load on the railway vehicle is increased. In addition to reducing the total amount of elastic mat 321 required by arranging the elastic mat 321 only on both ends of the sleeper main body 310 that contributes to the support, the contact area between the crushed stone B and the elastic mat 321 is reduced, and the railway track In order to further reduce the spring constant, the effect of vibration reduction can be increased to improve the comfort of the railway vehicle.

100, 200, 300 ... Elastic bed sleepers for elastic direct connection trajectory 110, 210, 310 ... Sleeper bodies 120, 220, 320 ... Anti-vibration elastic means 121, 221, 321 ... Elastic mat 122, 222, 322 ・ ・ ・ Blocking sheet
222a ... Opening portion
222b ... Net-like part B ... Crushed stone C ... Filler

Claims (3)

A sleeper body laid on a crushed stone roadbed constructed by laying crushed stones, and a vibration-proof elastic means provided on the bottom side of the sleeper body and interposed between the sleeper body and the crushed stone roadbed ,
The anti-vibration elastic means is provided on the bottom surface of the sleeper body and absorbs vibration transmitted from the sleeper body, and is provided on the bottom surface of the elastic mat and transmitted from the elastic mat. A flexible blocking sheet that absorbs vibrations and prevents the curable filler filled between the crushed stones of the crushed stone bed during the transitional construction from the crushed stone bed to the directly connected roadbed from entering the elastic mat. A bedded floor elastic sleeper for moving to an elastically connected track, characterized by being laminated.   The bedded elastic sleeper for elastic direct connection track transfer according to claim 1, wherein the blocking sheet has a permeable or non-permeable network structure. The said elastic mat is arrange | positioned at the both ends of the said sleeper main body, respectively, The bedded floor elastic sleeper for elastic direct connection track | orbit transfer of Claim 1 or Claim 2 characterized by the above-mentioned.

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