JPH0492003A - Structure and construction of road - Google Patents

Abstract

PURPOSE:To eliminate the need for maintenance and repairing work for long periods by preventing the occurrence of rutting by a method in which polygonal band structures made of a high-rigid material such as ceramics are placed on road. CONSTITUTION:A floor board 22 to be base is graded, and concrete layer 24 is placed on a position where a pavement is constructed of road structures 10 and smoothened. Before the concrete hardens, drains 26 and drain holes 28 are formed and road structures 10 are set to a depth of 1.0cm or more for example in an amount l in such a way as to be exactly fixed to the concrete layer 24 and also to prevent the closing of the drain holes. The road structure 10 is made of many banded high-rigid materials. Road pavement free of rutting and eliminating the need for maintenance and repairing for long periods can thus be attained, and the running cost of the road can also be greatly reduced.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a novel road structure that does not require maintenance or repair over a long period of time because it does not form ruts, and has excellent drainage performance. and a road paving method using the same.

<Background Art> Along with recent economic development, the traffic volume of various vehicles such as automobiles has increased dramatically. In addition, the number of heavy vehicles is increasing in order to carry out more efficient transportation.

Under these circumstances, the rate of destruction of roads using conventionally used asphalt-based pavement materials is accelerating, and this has become a major social problem.

Such destruction of asphalt pavement impedes safe vehicle driving and is a cause of traffic accidents. In addition, traffic jams due to maintenance and repair work caused by the destruction of asphalt pavement cause huge losses not only to road users but also economically and environmentally. Furthermore, the nuisance to nearby residents, such as noise and vibration caused by the incident, is a problem that cannot be ignored.

Therefore, there is a strong desire for a paving method that does not require maintenance or repairs semi-permanently, but such a paving method has not yet been realized.

By the way, most of the road destruction that is the cause of current road maintenance and repair work is caused by (e) ruts and cracks, and more than 80% of this is caused by ruts. In addition, even if it is not necessary, if even a slight amount of ground digging occurs, the running stability of the vehicle will be significantly impaired, and moreover, it will be more likely that puddles will form due to rain, etc. Decrease in brake performance and bite lob 1
This seriously impedes the safe driving of the vehicle, such as the occurrence of a noning phenomenon.

Rutting is generally caused by the plastic flow of asphalt pavement and the abrasion of asphalt pavement.
The majority of rutting tl is due to plastic flow, that is,
Asphalt pavement undergoes plastic flow due to vehicle loads.
This is due to the fact that Moreover, such ruts progress at an accelerated rate once they are formed.

<Problems to be Solved by the Invention> There are various factors that affect rutting due to plastic flow in asphalt pavement, but they can be broadly divided into external factors other than the asphalt mixture, and factors caused by the properties of the asphalt mixture itself. It is classified as something that does.

External factors that affect ruts include traffic load conditions such as traffic volume, large vehicle mix rate, tire contact with the ground, and loading time; geometric structural conditions such as road width and distribution of driving positions in the road width direction; and pavement conditions. Pavement structural conditions such as thickness and bearing capacity below the subgrade; temperature conditions such as solar radiation and road surface temperature; and various other factors.

However, at present, there is little hope of preventing the rut by improving these external factors. In other words, traffic load conditions and geometric structural conditions largely depend on social factors such as the proportion of road area in Japan, entrances, and concentration of traffic, and these should be restricted or adjusted. It's almost impossible to do. In addition, since temperature conditions depend heavily on natural conditions, it is impossible to deal with this artificially.Although there is still some room for improvement in the aforementioned pavement structural conditions, this may cause rutting. The rate of action is small, and improving the pavement structural conditions cannot be expected to have a significant effect on preventing rutting.

(1), (e) Among the factors that affect digging, those that are caused by the properties of the asphalt mixture itself include the type of asphalt, the amount of asphalt in the asphalt mixture, the material, shape, and type of mix of aggregate, etc. It will be done. However, the ability to prevent long-term ruts through these improvements is currently at its limit.

As for improving asphalt, straight asphalt has a relatively low viscosity under service conditions, which is one of the causes of rutting. Modified asphalt containing rubber, resin, thermoplastic elastomer, etc. is being added to asphalt mixtures at a high rate. However, since the asphalt mixture obtained by applying this modified asphalt also uses asphalt as the base material 1 and 2 as the base material, rutting due to flow may occur over a long period of time. prevent. 7] cannot be done.

The amount of asphalt in the asphalt mixture is good.
The flow resistance tends to increase as the amount of asphalt in the asphalt mixture is reduced. Although the number is increasing, it is still impossible to prevent falling into a rut.

Regarding the material and shape of the aggregate, considering the flow resistance of the asphalt mixture, it is preferable to use high-quality crushed stone as the aggregate 2, which satisfies the conditions of being hard and angular. However, in reality, such high-quality crushed stone is in short supply, and it is difficult to select and use crushed stone as a road material. Furthermore, regarding bone phase composition, long-term research 4j and test pavements have shown that there are limits to preventing flow.

In other words, there is currently a limit to the long-term prevention of rutting by improving the properties of the asphalt or asphalt mixture itself.

In addition, methods have been developed to prevent rutting by improving the rutting properties of asphalt mixtures, specifically improving the compaction effect of asphalt mixtures, and improving machines to prevent material separation. However, although this method has some effect in preventing the asphalt mixture from flowing when it is initially released to traffic, it has not been able to achieve a satisfactory effect under long-term service conditions.

The purpose of the present invention is to solve the problems of the prior art described above, and to eliminate the need for semi-permanent maintenance and repair without causing ruts over a long period of time5, and to achieve good drainage, etc. The purpose of the present invention is to provide a road structure capable of providing road construction, and a road paving method using this road structure.

Step 1 to Solve the Problems> In order to solve the problems mentioned above, 1.
As a result of extensive research, we came to the conclusion that it would be extremely difficult to hope for improvements beyond the current situation when using an asphalt mixture whose structural base is asphalt-based material and aggregate. .

Under these circumstances, the inventors of the present invention have conducted intensive studies on paving materials that require semi-permanent maintenance and repair without using asphalt mixtures, and have found that ceramics, various synthetic resins, cement-based materials, We use weather-resistant metals and other hard materials that have high rigidity and do not wear out, and are made of polygons such as triangular or hexagonal shapes, circles, or any other shape. It has a plane that constitutes a road surface, which is composed of a large number of strips, and a side surface that is substantially perpendicular to the road surface, that is, the plane, and that rain, snow melt, water, etc. are applied to at least a part of the side surface. In the drain hole or drain ↑
By means of a 7-dimensional structure with through holes for water
) By configuring the road 1), it is possible to prevent the occurrence of ruts and eliminate the need for maintenance and repair work over an extremely long period of time. The present inventors have discovered that it is possible to achieve protection against n-1 and ensure high υF aqueous properties, leading to the present invention.

That is, a first aspect of the present invention is a structure made of a high-rigidity material having a plane constituting a road surface and a side surface substantially perpendicular to the road surface, wherein at least a part of the side surface The present invention provides a road structure characterized in that it has a through hole for drainage, and the planar shape is composed of a large number of strips.

Further, it is preferable that the high-rigidity material is one or more of ceramics, synthetic resins, cement materials, and weather-resistant metals.

Further, it is preferable that the shape of the plane is one or more of a plurality of circles, triangles, quadrangles, and hexagons.

Further, in a second aspect of the present invention, concrete is poured at the construction position on the deck slab, and the -1 end portion of the road structure is poured into concrete before the concrete is hardened. To provide a road paving method characterized in that the concrete is hardened after being buried.

Moreover, it is preferable to form a drainage ditch and/or a drainage hole before burying the road structure.

<Embodiments> Hereinafter, specific configurations of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

FIG. 1 shows a schematic perspective view of an embodiment of the road structure of the present invention.

The road structure of the present invention basically has a planar shape formed by a large number of strips, and in the road structure 10 shown in FIG. It has a so-called honeycomb structure, which is a collection of squares.

Such a road structure 10 is made of a single material with high rigidity. In the present invention, a high-rigidity material is one that, when formed as the road structure 10 2, is capable of supporting the weight of various vehicles including heavy vehicles such as large special vehicles, and is capable of supporting the weight of various vehicles when the vehicle is running. It refers to a hard material that does not undergo deformation due to deformation and has very little wear. Specifically, various materials such as ceramics, synthetic resins, cement materials, and weather-resistant metals are suitably exemplified.

The road structure 10 of the present invention is formed of such a highly rigid material, and has a plane that constitutes a road surface and a side surface that is substantially perpendicular to the road surface, and the plane is composed of a large number of strips. The illustrated example has a honeycomb structure as described above. With this configuration, it is possible to prevent the formation of ruts over a long period of time, which is a problem with road paving using conventional asphalt mixtures. Various excellent effects such as excellent braking performance, prevention of tire skidding, and ensuring running stability of the vehicle can be obtained by injecting T into the body 10.

In the present invention, the shape of the single body 12 formed by the band constituting the plane is not limited to the hexagonal shape shown in the illustration, but can be various polygons such as triangles and quadrangles, circular shapes such as ellipses and circles, etc. Further, in the road structure 10 of the present invention, the shape of the single body 12 does not have to be a fixed shape, but may be a mixture of various shapes, for example, a circular shape and a hexagonal shape. It may be configured. Among these, a honeycomb structure as shown in the illustrated example is particularly preferably applied since it is possible to relatively easily realize a road structure 10 having high strength.

The size of the unit 12 constituting the road structure 10 of the present invention may be appropriately set depending on the material of the road structure 10, the paving location, etc., and is not particularly limited.
From the point of 0 strength, etc., usually one side of simple substance 12 is 6.0c
m or more is 1-culm degree.

Furthermore, there is no particular limitation on the thickness W of the highly rigid material constituting the unit j2 (thickness of the band forming the plane) (it may be determined as appropriate depending on the material, the size, shape, etc. of the unit j2). but,
Usually it is about 0.15 cm or more. Note that the thickness of this high-rigidity material 4 does not need to be uniform over the entire surface of the road structure 10.

The height of such a road structure 10 (1 in FIG. 1) is not particularly limited, and may be determined as appropriate depending on the floor slab of the construction site, environment, weather conditions, etc., but usually, It is about 2.0 cm or more.

Side wall 14 of the cylindrical body forming the road structure 10 of the present invention
At least a part of the hole has a through hole for conducting (draining) water that accumulates due to rainfall, etc. to a drainage hole, drainage ditch, etc.]
6 is formed. Having such a through hole 16 prevents water from accumulating due to rain, etc., and the condition is always the same as when the road is dry.

It can be used to prevent the occurrence of hydroplaning phenomenon-1
1. Things can be done to stop the occurrence of water, mud, etc.

The shape of the through hole 16 is not limited to the elliptical shape shown in the illustrated example, but may be any shape (E'). Also, the size of the through hole 16 should be one that can reliably absorb water. Furthermore, when the single body 12 is polygonal, it is not limited to having 2-) through-holes 16 formed on one side as in the illustrated example, but it may be one. 3-7) The above through holes 16 may be formed.

Further, the formation position of the through hole 16 is not limited to the position shown in the example shown, but may be formed in a suitable manner depending on the position of the drainage hole or drainage ditch formed in the road paved using the road structure 0. It may be formed in a position that provides good drainage.

Road structure 10 of the present invention basically having the above configuration
may be integrally formed as a plate-like object having a fixed area, or may be formed by combining a large number of cylindrical objects each having the shape of a single body 12. Also, Y? The road structure 10 may be formed by forming various pieces of necessary shapes such as a shape, an I-shape, a letter shape, etc., and combining, connecting and fixing these pieces.

Further, as a method for manufacturing the road structure IO of the present invention,
Various methods can be applied depending on the high-rigidity cart 1 to be applied, such as press molding, casting, forging, etc. when using weather-resistant metals, and firing methods when using ceramics. Various known methods can be applied depending on the material, such as injection molding when using a resin, and molding when using a cement-based material.

FIG. 2 shows an example of paving a road using the road structure 10 shown in FIG. 1.

In the example shown in FIG. 2, the road 20 is constructed by embedding an appropriate amount of one end portion of the aforementioned road 113h body 10 into a concrete layer 24 such as concrete or resin concrete formed on the floor slab 22. The first is fixed and the first is paved.

Furthermore, a drainage groove 26 and a drainage hole 28 are formed in the fifth concrete layer 24 for distributing rainwater and the like.

When paving such a road 20, various methods can be applied, but preferably, the following road paving method 77 according to the second aspect of the present invention is applied.

First, the floor slab 22 serving as a foundation is leveled 2, and then concrete, which will become the concrete layer 24, is poured and smoothed at the position to be paved by the road structure 10. There are no particular limitations on the method for shaping the concrete layer 24, and various known methods may be used depending on the floor slab 22 to which it is applied.

In addition, there are no particular limitations on the concrete that can be applied, but
Currently, there is an extremely strong demand for shortening road construction time in order to prevent long-term construction work and nuisance to the surrounding area, and therefore it is preferable to use ultra-quick hardening concrete.

Next, while the poured concrete has not yet hardened, a drainage ditch 26 and a drainage hole 28 are formed, and the road structure 0 of the present invention is installed.

As a method for forming drainage channels 26 and drainage holes 28 in concrete before hardening (concrete layer 24), there is a known method used in ordinary road construction, in which these are formed using wooden molds or styrofoam molds. It depends on the method.

The road structure 10 is installed in unhardened concrete soil, and then an appropriate amount near the upper end is embedded in unhardened concrete. Here, there is no particular limit to the amount of embedding of the lower end of the road structure 10 into the concrete (Fig. (Figure 1 h
), but in order to securely fix the road structure 10 to the hardened concrete, that is, the concrete layer 24, it is preferable that the embedding amount ρ is 1.0 cm or more. Better, better.

In addition, in the present invention, after the poured concrete is hardened, the drainage ditch 2 is
6 and drainage holes 28 are formed, and further concrete is poured without filling the formed drainage grooves 26 and drainage holes 28, and before this concrete hardens, the road structure 10 is formed. may be placed.

After that, after the concrete forming the concrete layer 24 has hardened, the molds for forming the drainage ditches 26 and drainage holes 28 are removed, and the road paving work is completed.The road paving work is extremely easy and quick. can be terminated.

Note that the road paving method according to the present invention is not limited to the above-mentioned example, and the road structure 10 of the present invention is used as a floor slab 22.
Another preferred example is a method of placing it at a predetermined position on the concrete 1/calendar 24 and then fixing it using an anchor bolt, a fixing plate, or the like. In addition, for road slabs in which the floor slab is a steel slab and the road structure [0] is made of steel or the like, a paving method such as welding is preferably applied.

Such paving according to the present invention] 7 may be carried out over the entire surface of the road 20 to be paved, but normal ruts correspond to the area where the tires of the middle 7 cars touch the ground, and the width 1
The road structure of the present invention is placed near the areas where ruts are likely to occur, and the other areas are paved with an ordinary asphalt mixture. It may be a modified version of 20 (3rd
(see figure).

FIG. 3 shows an example in which the road structure 1.0 of the present invention was used to repair a road whose surface was severely damaged due to rutting. Note that the illustrated example shows one lane in one direction with respect to the center line C, and therefore, the traveling direction of the vehicle is from the far side to the front in the figure.

In the illustrated example, first, the asphalt mixture 30 on the surface layer of the running ring of a severely damaged bridge section where ruts have been formed is removed by a road milling machine to a thickness of 8 cm (asphalt pavement thickness) and a width of 1 m. Cutting 1. The reinforced concrete 1 and floor slab 22 in that area are exposed.

After that, the floor slab 22 is perforated using a concrete core machine to form the υI-water hole 28 for rainwater, etc. Similarly, the drain groove 2 (5) for guiding water to the drainage hole 28 is connected to the road axis (ψ south 2 perpendicular to the traveling direction) and formed at 5n1 intervals.

Next, 2 to 3 layers of resin concrete 32 are applied to the floor slab 22 so as not to block the drain groove 26j and the water extraction hole 28.
Pour the concrete with a thickness of 1/4 inch (cm) 2, match it to the road surface slope and smooth it 2,
The road structure 10 of the present invention shown in FIG. 1 with a height h of 8 cm is placed before the resin concrete 32 hardens, and its lower end is buried 4°0 cm in the resin concrete 32 in accordance with the road surface slope. and fixed, resin concrete 3
2] - end of thing.

Although the road structure and road paving method of the present invention have been described in detail above, the present invention is not limited thereto, and various improvements and changes may be made without departing from the gist of the present invention. Of course you can go.

<Effects of the Invention> As explained in detail below, by applying the road structure of the present invention, e) immediate digging does not occur and it lasts for an extremely long period of time! , 71 can realize road paving that does not require maintenance and repair, significantly reducing road running costs.
can do. Also, because there are no ruts,
The vehicle is also stable and can be driven safely.

Further, since the road structure of the present invention has good drainage properties, it is possible to prevent water splashing, mud splashing, hydroplaning phenomena, etc., and allow the vehicle to run stably in an extremely safe condition.

Furthermore, according to the road paving method of the present invention, a road structure having the above-mentioned excellent properties is used, and with good construction efficiency and short construction time, no maintenance or repair is required for an extremely long period of time. It is possible to construct road pavements at temperatures as low as °C.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of an example of the road structure of the present invention. FIG. 2 is a schematic perspective view of an example of road paving using the road structure shown in FIG. 3. FIG. FIG. 3 is a schematic perspective view showing this example of paved road repair using the road structure shown in FIG. , 14...Side wall, 16...Through hole, 20...Road, 22...Floor slab, 24...Concrete layer, 2(:i...Drainage ditch, 28...Wato Water hole, 30... Asphalt mixture, 32... To resin concrete 1

Claims (5)

[Claims] (1) A structure made of a highly rigid material having a plane forming a road surface and a side surface substantially perpendicular to the road surface, the structure having a through hole for drainage in at least a part of the side surface,
A road structure characterized in that the planar shape is composed of a large number of strips. (2) The road structure according to claim 1, wherein the high-rigidity material is one or more of ceramics, synthetic resins, cement materials, and weather-resistant metals. (3) The road structure according to claim 1 or 2, wherein the shape of the plane is a collection of one or more of a large number of circles, triangles, quadrangles, and hexagons. (4) After pouring concrete at the construction position on the deck slab and burying the lower end portion of the road structure according to any one of claims 1 to 3 in the concrete before the concrete hardens, A road paving method characterized by curing concrete. (5) The road paving method according to claim 4, wherein a drainage ditch and/or a drainage hole is formed before burying the road structure.