JP3076224B2 - Mounting structure of elastic roadbed - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to intersections of general roads in cold and snowy areas, pedestrian crossings, curves, slopes, entrances and exits of parking lots and highways, toll gates, and level crossings and approaches before and after them. Prevents tires from slipping due to snow and freezing during the winter season on roads where traffic frequently decelerates, accelerates, stops and starts, ensuring traffic safety and smooth traffic, as well as removing snow and ice. The present invention relates to a structure for mounting a rubber-elastic road surface flooring plate having anti-slip properties for the purpose of reducing a split operation.

[0002]

2. Description of the Related Art In recent winter traffic conditions in cold and snowy areas, thorough snow removal work by road managers, spread of various snow melting facilities such as road heating, spraying of snow melting agent,
It is gradually improving due to the improvement of information services, etc.
Due to the increase in the leisure population in winter, the extension of winter traffic sections and the increase in vehicles due to the revitalization of local areas, traffic accidents mainly caused by tire slippage due to ice burns on the road surface, snow compaction, etc. in winter were reduced. Rather, it is increasing.

[0003] Furthermore, there is a strong demand for social measures to maintain the smoothness of traffic on winter roads, ensure safety, and protect human lives and property, such as the impact of the recently legislated regulations on the use of spiked tires. Have been.

Conventionally, as measures against snow on winter roads, road heating, groundwater spraying, snowmelt spraying,
Various methods such as a mechanical snow removal method using a rotary car, a motor grader, and the like have been proposed.

[0005]

However, the conventional measures against snow on winter roads, such as road heating, groundwater spraying, snowmelt spraying, and mechanical snow removal methods using a rotary car, motor grader, etc., are economical. Each method has the following problems, such as investment efficiency, difficulty of maintenance, and impact on the environment.

For example, in the case of spraying groundwater or seawater,
There is ground subsidence due to lowering of the groundwater level, and body and road facilities are corroded by seawater. The construction cost of road heating is higher than other methods, the running cost is higher, and it is a high energy consumption type.

[0007] The simplest method of spraying a snow-melting agent such as calcium chloride may cause corrosion of vehicles and road facilities, affect the treatment capacity of a final treatment plant, and cause secondary pollution, similarly to seawater spraying.
Further, it is almost impossible to expose the road surface for 24 hours due to the mechanical ability, lack of manpower, etc. in the method using a snow removing machine.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to effectively prevent the occurrence of a snow compaction condition on a road surface, particularly in a winter period. At the same time, it is possible to effectively remove the frozen state of the road surface based on the running of the vehicle, and it is a very economical and maintenance-free elastic roadbed that is free from secondary pollution and labor shortage. An object of the present invention is to provide a mounting structure for an elastic road surface slab, which can be firmly attached to any base material by firmly contacting the entire surface thereof.

[0009]

According to the present invention, the mounting structure of the elastic roadbed is provided on the upper surface of the base buffer layer made of soft rubber.
A steel sheet and a surface rubber layer are sequentially laminated, and a bolt insertion hole is provided in the laminate, and an elastic roadbed slab having a surface of the surface rubber layer subjected to anti-slip design, an anchor bolt inserted through the bolt insertion hole, and It is attached to the base material by an adhesive layer provided between the base buffer layer and the base material. An aluminum foil or stainless steel foil is bonded to the base buffer layer between the base buffer layer and the adhesive layer. It was made. By the way, in this elastic roadbed, a washer positioned around the bolt insertion hole can be used instead of the steel plate.

Here, the soft rubber constituting the base buffer layer is 1 to 40 as measured by a JIS spring type A hardness meter.
The hardness of the scale can be set as a scale, and the hardness of the surface rubber layer can be set at a scale of 25 to 80 scales using a JIS spring type A hardness meter.

[0011]

With this elastic roadbed, even if there is some unevenness on the road surface on which it is laid, the base buffer layer effectively absorbs the unevenness on the road surface and the like based on its own elastic deformation.
The elastic road surface slab can always be sufficiently adhered to the road surface or the like, and the upper surfaces of the respective elastic road surface slabs can be easily laid in the same horizontal plane while being aligned in a stable posture.

In addition, the adhesion of the base buffer layer to the road surface or the like prevents water from entering between the road surface plate and the road surface or the like. Floating deformation can be effectively prevented.

[0013] Further, the impact of the road surface slab when a vehicle or the like passes over the road surface slab is mitigated based on the elastic deformation of the ground cushioning layer of the road surface slab after laying, so that the roadbed or the railroad crossing is reduced. And the generated noise can be effectively suppressed.

Here, the steel sheet having a plane contour dimension substantially equal to each of the base buffer layer and the surface rubber layer,
By functioning as a core material for mechanically fixing the road surface slab to the base material and supporting the bolt tightening force, each rubber layer can be sufficiently protected, and at the same time, the elastic road surface slab In addition to deformation over time, it effectively prevents curving deformation of the roadbed, especially at the corners, and ensures a sufficiently flat laying of the roadbed, as well as reducing the number of anchor bolts. .

When a washer positioned around the bolt insertion hole is used instead of the steel plate, the weight of the elastic road surface floor plate can be effectively reduced while protecting the respective rubber layers. Even if the unevenness of the road surface is relatively large and the repair is subject to time or budget constraints, the road surface slab should be fully adapted to the unevenness and the expected The anti-slip function as described can be sufficiently exhibited.

By the way, the surface rubber layer of the elastic road surface slab is largely elastically deformed when a vehicle or the like passes on the surface of the road surface slab due to the inherent elasticity and the action of the anti-slip design applied to the surface. This allows the frozen layer on the surface rubber layer to be easily and reliably destroyed and removed by its elastic deformation and subsequent elastic return, thereby keeping the frictional force between the vehicle tires and the roadbed always high. it can. In addition, since the surface rubber layer is greatly elastically deformed each time a vehicle or the like passes, even if snow is accumulated on the surface rubber layer, it can sufficiently prevent the snow layer from becoming snow compacted. Furthermore, by dispersing the load acting thereon widely by such elastic deformation of the surface rubber layer, it is possible to effectively prevent the surface rubber layer from being damaged by abrasion, chipping, cutting and the like.

In addition, here, in addition to the anchor bolt inserted into the bolt insertion hole, the roadbed is also attached to the base material by an adhesive layer formed between the base buffer layer and the base material. Therefore, especially under the action of the adhesive layer, it absorbs the fine irregularities of the base surface sufficiently, and in combination with the function of the base buffer layer, the gap between the roadbed and the base surface The gap can be removed, and the floor plate can be brought into close contact with the base surface, whereby the intrusion of water or the like between them can be more reliably prevented.

In addition, by using an adhesive together with the anchor bolt, the number of anchor bolts can be greatly reduced. In addition, for example, in connection with an underground object, the anchor bolt is applied to an intended position. Even if this is not possible, the application of the adhesive allows the roadbed to be firmly fixed to the base surface, which makes it possible for anchor bolts, such as for example asphalt road surfaces, to have their full function. The same applies to laying work on a base surface that cannot be demonstrated in any way.

Further, when the road surface slab is fixed to the base surface over the entire surface with an adhesive, the load received from the vehicle or the like can be widely dispersed, and the durability of the road surface slab can be effectively reduced. Can be improved.

Here, when an aminium foil or a stainless steel foil is fixed to the lower surface of the base buffer layer, the initial adhesive strength to the base surface of the base plate is increased as compared with the case where those foils are not provided. At the same time, the exudation of the additive contained in the base buffer layer is prevented, and a high adhesive force to the base surface can be maintained for a long time. In addition, since these foils do not greatly expand and contract like rubber, it is possible to sufficiently eliminate the risk of shear breakage or shear peeling of the adhesive layer.

[0021]

Embodiment 1 An embodiment of the present invention will be described below with reference to FIGS. This embodiment is used at a railroad crossing where the risk of slip accidents due to ice
Elastic roadbeds are laid and constructed at the vehicle stop, departure position, road surface, and railroad crossings.

FIGS. 1 to 3 show an elastic road surface flooring plate 1 with a 10 m length on each of the upper and lower sides of a railroad crossing vehicle at a stop and stop position, and a dry anchor 3 on an existing concrete pavement surface 2. It is a figure which shows the state which used and contacted the railroad crossing main body bottom board 4 and fastened.

Each elastic roadbed 1 used in this embodiment
Has a dimension of 500 mm in width, 3000 mm in length, and 35 mm in thickness. As shown in FIG. 5, the elastic roadbed 1 has a surface rubber layer 1A and a steel plate 1D on the lower surface of the surface rubber layer. And a base buffer layer 1E made of a soft rubber, which is laminated through the intermediary layer.

The surface rubber layer 1A has a depth of 12 mm and a width of 4 m.
The anti-slip design 5 is formed by engraving 20 m non-slip grooves 1B at a pitch of 20 mm at right angles to the traveling direction 1C of the vehicle. The anti-slip design 5 functions not only to further enhance the rubber elasticity of the elastic road surface slab 1 but also to greatly deform the surface rubber layer 1A when a load such as a vehicle is applied to the surface, so that the surface rubber layer 1 Disperses the load received, minimizes the occurrence of damage such as wear, chipping and cutting, and enhances the non-slip effect.

This surface rubber layer 1A is made of JIS K-630.
1 (Testing method for vulcanized rubber) According to -14 "Low-temperature impact brittleness temperature", it has a cold resistance of -45 ° C or less.
In SK-6301-16 "Ozone Deterioration Test", under the conditions of ozone concentration 50 ± 5PPhm, constant temperature bath temperature 40 ± 2 ° C and specimen elongation 20%, no abnormalities were observed for 100 hours and excellent weather resistance was obtained. In addition, the specimen angle was 15 ° and the load was 15 pounds (2.721k) in the Akron abrasion test.
g), under the test conditions of 500 preliminary rotations and 1500 full rotations, the wear loss is 0.1 cc or less, and it also has high abrasion resistance enough to withstand long-time running of spike tires and the like.

The following Table 1 shows an example of the rubber compounding of the surface rubber layer 1A. The hardness is 55 with a JIS spring type A hardness meter.

[0027]

[Table 1]

As shown in FIGS. 4 and 5, a steel plate 1D is a core material for mechanically fixing the elastic road surface slab 1 to various base materials. Suitable specifications can be taken depending on the type and shape of the material, but a minus dimension that is not exposed from the periphery of the elastic roadbed 1 (in this example, minus 8 from the periphery)
In addition to the peeling and corrosion of the rubber layer from the rubber layer, the short circuit of the signal current flowing between the lines when the road surface floor plate 1 is used as the railroad crossing main body floor plate 4 is prevented.

The material used is SS41, a general structural material, or a zinc-coated steel sheet whose surface is galvanized to increase corrosion resistance and adhesion to rubber. Note that a wire mesh or an expansion metal can be used instead of the steel plate.

Here, the joining of the surface rubber layer 1A and the base buffer layer 1E as a so-called conformable layer to the steel plate 1D is carried out in advance when the roadbed plate 1 is formed when it is not a galvanized steel plate. The surface is removed by blasting or sand blasting to remove rust, scale, etc., and after solvent degreasing, a primer (for example, Toyo Kagaku “Metaloc P /
Metaloc FB ”) and vulcanization bonding at the same time as press molding, and firmly attach it to each rubber layer (JISK
-6301 (35 kgf / 25 mm or more at 90 ° peel strength of “vulcanization adhesion to metal”). In addition, a blast process is unnecessary for a zinc-coated steel sheet.

In forming the elastic roadbed 1, first, the surface rubber shown in Table 1 was applied to an extruder having a width of 250 m using a T-die.
m, a sheet extruded with a thickness of 10 mm and a width of 500 m
m, a thickness of 30 mm, and a length of 1500 mm to form an unvulcanized surface rubber layer, on which a 484 × 1484 × 4.5 mm steel plate 1D which has been subjected to a primer treatment in advance is overlaid.

Next, similarly to the surface rubber, the soft rubber for the base buffer layer shown in Table 2 extruded by an extruder with a T-die has a width of 250 mm.
extruded into a sheet with a width of 500 mm and a length of 1500 mm.
It is superposed on the steel plate 1D and integrated, and this is accommodated in a press molding die provided with a ridge for anti-slip design, and compression molded using a steam heating type rubber press molding machine. The press molding conditions at this time are a mold temperature of 145 ° C. and a pressing time of 60 minutes. The molded product after vulcanization is deburred after demolding, and is subjected to dimensional inspection after cooling.

On the other hand, the base buffer layer 1E made of soft rubber which is in contact with the concrete pavement surface 2 has a structure such that the elastic roadbed can be easily adhered and fixed thereto even if the base concrete pavement surface is somewhat uneven. Has become. The appropriate hardness range of the base buffer layer 1E is 15 to 30 scales by a JIS spring type A hardness meter.

The base buffer layer 1E enhances the adhesion between the concrete pavement surface 2 and the road surface slab 1, thereby eliminating the gap between the concrete pavement surface 2 and the elastic road surface slab, and reducing the water intrusion during winter. To prevent freezing and frost heaving,
It functions to absorb the vibration of the roadbed by a vehicle or the like passing on the roadbed to protect the roadbed and railroad crossings, and to greatly reduce the accompanying noise.

Table 2 shows rubber compounding examples of the base buffer layer.

[Table 2]

Further, on the lower surface of the base buffer layer 1E, FIG.
As shown in FIG.
A 1 mm thick aluminum foil 1F is firmly attached. (In the experiment of the inventor, an aluminum foil having a thickness of 0.03 mm was suitable.)

When the aluminum foil 1F is used to bond the pavement surface such as concrete or asphalt to the elastic roadbed 1 using the adhesive 6, the aluminum foil 1F is placed between the vulcanized rubber and the adhesive, which are relatively difficult to bond. By interposing, the initial adhesive strength is increased as compared with the case without the aluminum foil, and the high adhesive strength is maintained for a long period of time.

Table 3 shows a part of the adhesion data between the asphalt and the elastic roadbed.

[Table 3]

With this aluminum foil, it is possible to eliminate the phenomenon that the antioxidant, the vulcanization accelerator and the like compounded in the main body of the elastic road surface slab gradually migrate to the bonding interface with time, thereby lowering the bonding strength at the interface. . Note that a stainless steel foil may be used instead of the aluminum foil.

The elastic roadbed 1 has a 25φ anchor hole 1G for a dry anchor (“Sanvic anchor” M-16 × 160) 3 for fastening it to the roadbed surface.
There are 14 openings in the periphery. In addition, this anchor hole 1
G has a hole diameter at the upper portion thereof increased by a counterbore provided in the upper rubber layer so that the anchor head can be sufficiently accommodated together with the washer.

As described above, the elastic roadbed made of the surface rubber layer 1A, the steel plate 1D, the base buffer layer 1E, and the anchor hole 1G is used for the concrete pavement surface 2 using a concrete drill.
An anchor driving hole 2A is drilled at a depth of about 170 mm with a diameter of 3φ and fastened with a dry anchor 3. Reference numeral 7 in FIGS. 5 and 6 designates a cast-in-place type quick-curing urethane elastomer injected into a counterbore for embedding the head of the anchor after the anchor is driven. When attaching or detaching the anchor 3 in the case of breakage or the like, it is possible to prevent the anchor hole from being buried with mud, pebbles, or the like, thereby making the attaching / detaching operation difficult, and also preventing the adhesion of ice to the anchor portion.

Table 4 shows an example of the urethane elastomer used.

[Table 4]

FIG. 1 shows the whole of a railroad crossing stop zone in which the elastic road surface slab 1 is laid on the pavement surface 2, and in the figure, each of the upper and lower halves has a length of 10 m, each of which has 20 surfaces. The cross section is shown, and 2B is concrete poured to make the same level as the elastic roadbed 1 laid on the existing concrete pavement surface 2. FIG. 5 shows a state in which the elastic roadbed 1 is fastened to the concrete pavement surface 2 with a dry anchor.

Embodiment 2 In the places shown in FIGS. 7 to 11, reference numeral 11 in the figures denotes another elastic roadbed. Figure 7 shows the existing asphalt road surface,
The state in which the elastic road surface floor board 11 (total thickness 25 mm) is laid is shown.

Reference numeral 11A denotes a surface rubber layer (thickness: 20 mm, the composition is the same as in Example 1), and an anti-slip design 15 formed by a non-slip groove 11B (16 mm in depth and 6 mm in width) is provided on the upper surface thereof. Under the surface rubber layer, a soft base buffer layer 11C is integrally laminated. In both of these, bolt holes 11E into which anchor bolts (diameter 16 mm) 11D for fastening the elastic road surface floorboard 11 to the road surface are opened at a rate of about 8 per 1 m ² .

Here, each of these bolt holes 11E is
It is reinforced by a washer 11F made of mild steel (SS41) that is 0 mm square and 4.5 mm thick and is simultaneously vulcanized and simultaneously bonded to rubber.

By the way, in order to adapt to the small protrusions and irregularities on the existing asphalt road surface, the surface rubber layer 11A is used.
As shown in FIG. 12, the lower surface of the base buffer layer 11C having a thickness of 5 mm (same composition as in Example 1) laminated on the lower surface of 11G is firmly attached.

The elastic roadbed 11 does not contain a core material such as a steel plate in an intermediate portion thereof, so that it cannot be repaired in advance on an existing road having a relatively uneven surface due to time or budget restrictions. Even in such a case, it is designed to fit the road surface sufficiently and exhibit the anti-slip effect.

The elastic roadbed 11 is fixed to the existing asphalt road surface by using an adhesive 11H and a mechanical part such as an anchor bolt 11D or a chemical anchor 11I for improving the fixing reliability. It uses a double method combining the fastening methods.

Table 5 shows examples of the adhesive used between the elastic roadbed and asphalt.

[Table 5]

The main agent and the curing agent were mixed in the weight ratio shown in Table 5,
700 to 1000 g each on the asphalt surface from which dirt such as water and mud on the elastic roadbed has been removed
/ M ² , immediately adhered together, lightly tightened with the bolts of the previously anchored chemical anchor 11I, and used a hand-pressed pressure roller to serve as rolling pressure, expelling the air between the asphalt and the elastic roadbed. After confirming that the adhesive 11H has sufficiently cured, the bolts of the anchor are re-tightened, and finally the urethane elastomer 11J shown in Table 4 is injected into the bolt holes.

Another embodiment will be described with reference to FIG.
This is applied when the road surface on which the elastic roadbed is to be installed is unpaved or the pavement is severely damaged and the elastic roadbed can not be directly laid on the road as described above. The base plate 12B is incorporated in the concrete plate unit 12.

When the concrete plate unit 12 is used to cast reinforced concrete having a width of 3 m, a length of 3.3 m and a thickness of 21.5 cm using a formwork in advance at a factory, the anchor bolts 12A are previously mounted as shown in FIG. The mounted road surface base plate 12B is formed integrally with the reinforced concrete substrate 12C by setting the mounted elastic road surface floor plate 12B on the bottom of the formwork and pouring concrete.

The concrete plate unit 12 incorporating the elastic roadbed 12B in this manner is successively fastened by the concrete plate unit fastening block 12D shown in FIG. 17, which is reinforced with a reinforcing bar, and the concrete plate units 12 are separated from each other. It is configured not to be shifted or shifted.

Further, the anchor 12E is fixed to the ground by fixing the entire concrete plate unit. Here, instead of the reinforced concrete block, F.R. R. P. Using structural materials or steel frame materials,
Further, a steel plate having a thickness of 20 mm to 50 mm can be used. By the way, the elastic road surface slab 12B and the elastic road surface slab 1 have the same structure.

FIGS. 19 and 20 are sectional views showing still another elastic roadbed. This is because the irregularly shaped ceramics 1A1 are formed on the surface rubber layer 1A where the anti-slip design is applied.
According to this, the present invention is applied to a road surface that requires even more anti-skid properties, the frictional force between the tire and the road surface can be increased, and the grip effect can be greatly increased.

By using "Sixson P-10" as a base primer and "Sixson 511-T" as an overcoat primer on alumina whose particle diameter is adjusted to 3 to 8 mm by sieving, rubber and alumina are firmly bonded. Can be vulcanized.

For 1000 g of alumina, “Sixson P
Then, 80 g of -10 "was weighed and uniformly mixed with a stirrer, and the mixture was dried in a drying oven at 100 ° C. for 20 minutes.
Weigh 70 g per 000 g and apply again.

After the primer-treated alumina was uniformly sprayed into a mold cavity of 3500 g per 1 m ² of the molding surface area of the mold for the elastic roadbed, the mold was molded in the same manner as in Example 1. Then, surface rubber → iron core → base buffer layer rubber are laminated in this order, and the integrated material is charged and compression molded by a press molding machine. Press vulcanization conditions during molding are the same.

As shown in FIG. 19, almost no ceramic is exposed on the surface of the molded ceramic-embedded elastic road surface slab, so that there is no obstacle to the operation when removing snow accumulated on the surface. Will not come.

As shown in FIG. 20, when the vehicle passes over the floor plate, the rubber surface around the ceramics is distorted due to its weight, and only the apex of the ceramics 1A1 slightly protrudes from the rubber surface. Increases the frictional force with the tread, greatly improving anti-slip performance.

[0062]

According to the present invention, the elastic roadbed is provided with cold resistance,
Using rubber elastic body with weather resistance and wear resistance as the basic material,
By making use of this elasticity and using the anti-slip design of the surface with anti-slip effect, even if it becomes snow cover → partial snow melting → temperature drop → freezing → ice burn, the vehicle will pass over the elastic roadbed, With the weight and the impact of the tire hitting the roadbed,
The ice burn is destroyed instantly, easily and reliably, and the frictional force between the tire and the road surface slab increases at a stretch, thereby exhibiting an anti-slip effect.

In addition, in the case of snow with a lot of moisture, on a general road surface, the vehicle is immediately in a snow-covered state in which the snow is hardened by a passing car, which is an extremely dangerous road condition.
Due to the above materials and anti-slip design, the elastic roadbed can never be in a snow compaction state.Also, even if there is no passing vehicle and snow or ice adheres to the elastic roadbed as it is, a simple scoop etc. It can be easily removed with snow removal equipment, and compared to the conventional snow removal and snow melting methods, light work, energy saving, no pollution, maintenance free, work safety improvement during snow removal work, and laying this road surface board even during winter time By doing so, the vibration and noise caused by the passing vehicle can be greatly improved in combination with the function of the base buffer layer, and the invention is extremely excellent in many points.

In addition, in this elastic road surface slab, the base buffer layer effectively absorbs irregularities on the road surface or the like based on its own elastic deformation, so that the elastic road surface slab can always be sufficiently adhered to the road surface or the like. In addition, the upper surfaces of the respective elastic road surface slabs can be laid in the same horizontal plane easily and with excellent stability.

In addition, the adhesion of the base buffer layer to the road surface or the like prevents water from entering between the road surface plate and the road surface or the like. Deformation can be effectively prevented.

Further, by damping the vibration and shock generated on the floor board by the vehicle running on the road floor board based on the elastic deformation of the base buffer layer, the roadbed and railroad crossings are protected and the generated noise is effectively suppressed. can do.

Further, since the steel sheet embedded in the elastic road surface slab functions as a core material for fixing the road surface slab to the base material, each of the base buffer layer and the surface rubber layer is
The steel plate provides sufficient protection from mechanical clamping forces. By the way, since this steel sheet is usually buried almost all over the elastic road surface slab, it is possible to effectively prevent the road surface slab from being deformed over time and effectively turning over the road surface slab, particularly at corners. In addition, it is possible to carry a sufficiently flat laying of the road surface slab and to reduce the number of anchor bolts.

When a washer is used instead of the steel plate, each rubber layer is sufficiently protected.
The weight of the elastic roadbed can be reduced, and at the same time, the relatively large unevenness of the base surface can be sufficiently absorbed, so that the elastic roadbed can exhibit its original function sufficiently.

By the way, in this mounting structure, in addition to the anchor bolt inserted into the bolt insertion hole, the roadbed is also attached to the base material by the adhesive layer formed between the base buffer layer and the base material. Therefore, especially under the action of the adhesive layer, it absorbs the fine irregularities of the base surface sufficiently, and in combination with the function of the base buffer layer, the gap between the roadbed and the base surface Can be removed, and the floor plate can be brought into close contact with the base surface, whereby the intrusion of water or the like between them can be more reliably prevented.

Moreover, by using an adhesive together with the anchor bolt, the number of the anchor bolts can be greatly reduced, and the anchor bolts can be applied to the expected positions, for example, in connection with underground objects. Even if this is not possible, the application of the adhesive allows the roadbed to be firmly fixed to the base surface, which makes it possible for anchor bolts, such as for example asphalt road surfaces, to have their full function. The same applies to laying work on a base surface that cannot be demonstrated in any way.

Further, when the roadbed is fixed to the base surface over the entire surface with an adhesive, the load received from the vehicle or the like can be widely dispersed, and the durability of the roadbed can be effectively improved. Can be improved.

Here, by attaching an aminium foil or a stainless steel foil to the lower surface of the base buffer layer, the initial adhesion to the base surface of the base plate can be increased as compared with a case where those foils are not provided. It is possible to prevent exudation of the additives contained in the base buffer layer and to maintain a high adhesive force to the base surface for a long period of time. and again,
Since these foils do not greatly expand and contract like rubber, it is possible to sufficiently eliminate the risk of shear breakage or shear peeling of the adhesive layer.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state in which an elastic road surface slab is laid at a vehicle stop / departure position at a railroad crossing.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an enlarged plan view showing a part of the elastic road surface slab which is omitted.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is an enlarged longitudinal sectional view of a main part of a fastening portion.

FIG. 6 is a longitudinal sectional view showing another fastening example.

FIG. 7 is a longitudinal sectional view showing a state in which an elastic roadbed is laid on an existing asphalt road.

FIG. 8 is an enlarged plan view showing a part of the elastic road surface slab omitted.

FIG. 9 is an enlarged view of a main part of FIG.

FIG. 10 is an enlarged sectional view taken along line CC of FIG. 9;

FIG. 11 is an enlarged sectional view taken along line DD of FIG. 8;

FIG. 12 is a longitudinal sectional view showing another fastening example.

FIG. 13 is an overall plan view of a reinforced concrete block in a laid state.

FIG. 14 is an enlarged view of a main part of FIG.

FIG. 15 is a side view showing an assembled state of the fastening block and the concrete plate unit.

FIG. 16 is a sectional view taken along line EE in FIG. 14;

FIG. 17 is an enlarged sectional view of a main part of the concrete plate unit.

FIG. 18 is a perspective view of a concrete block unit fastening block.

FIG. 19 is an enlarged cross-sectional view of a non-load state with respect to an elastic road surface slab of a ceramic embedded type.

FIG. 20 is an enlarged sectional view showing the load state of FIG. 19;

[Explanation of symbols]

 1,11,12B Elastic roadbed 1A, 11A Surface rubber layer 1A1 Ceramics 1B, 11B Non-slip groove 1C Traveling direction 1D Steel plate 1E, 11C Base buffer layer 1F, 11G Aluminum foil 1G Anchor hole 2 Concrete pavement surface 2A Anchor hole 3 Dry anchor 5,15 Anti-slip design 6,11H Adhesive 7 Rapid curing urethane elastomer 11D, 12A Anchor bolt 11E Bolt hole 11F Washer 11I Chemical anchor 12 Concrete board unit 12C Reinforced concrete board 12D Fastening block for concrete board unit 12E Anchor 13 Tire

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Ichiro Yamaguchi 4-26-1, Okusawa, Otaru-shi, Hokkaido Mitsuuma Co., Ltd. (72) Inventor Hiroyuki Umemoto 4-26-1, Okusawa, Otaru-shi, Hokkaido Mitsuuma-in ( 56) References JP-A-57-47202 (JP, A) JP-A-55-164505 (JP, A) JP-A-62-225603 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , (DB name) E01C 5/00 E01C 5/18 E01C 5/22

Claims (2)

(57) [Claims] 1. A base buffer layer made of soft rubber, a steel sheet and a surface rubber layer sequentially laminated on the upper surface of the base buffer layer, and a bolt insertion hole is provided in the laminate, and An elastic roadbed with an anti-slip design on the surface, an anchor bolt inserted into the bolt insertion hole, and an elastic roadbed attached to the base material by an adhesive layer provided between the base buffer layer and the base material. In the mounting structure, between the base buffer layer and the adhesive layer, a mounting structure of an elastic road surface slab obtained by bonding an aluminum foil or a stainless steel foil to the base buffer layer. 2. The mounting structure according to claim 1, wherein a washer is provided around the bolt insertion hole instead of the steel plate.