KR102468730B1 - Road surface grooving structure - Google Patents

Abstract

The present invention relates to a road surface grooving structure formed by cutting a surface of a road. The road surface grooving structure comprises a plurality of main grooves (100). The plurality of main grooves (100) include a first groove (110), a second groove (120), a third groove (130), and a fourth groove (140) arranged in parallel in order in the horizontal direction. The plurality of main grooves (100) are repeatedly provided on the road surface at regular intervals. Accordingly, the first groove (110), the second groove (120), the third groove (130), and the fourth groove (140) are repeatedly formed in order. Therefore, the road surface grooving structure is capable of reducing functional deterioration of grooving.

Description

Road surface grooving structure {Road surface grooving structure}

The present invention relates to a road surface grooving structure formed by cutting the surface of a road. More specifically, it relates to a road surface grooving structure capable of improving durability of grooving and maximizing the effect of grooving by making the structure of grooving formed on the road surface linearly symmetrical and having a structure in which a special pattern is repeated.

Grooving is formed on the surface of the road to ensure the safety and pleasant driving of vehicles running on the road.

In general, grooving is used for the purpose of increasing the frictional resistance of automobile wheels, reducing aquaplaning and slipping caused by moisture by draining water from the road surface, reducing noise, suppressing icing, and providing bumpy ride comfort to drivers. It is constructed for the purpose of inducing deceleration by feeling the

However, the grooves formed on the road surface may be worn or depressed due to repeated driving of the vehicle, and foreign substances and soil may accumulate inside the grooves and become clogged, thereby deteriorating the function of the original grooves.

The cross-sectional shape of general grooving uses a rectangular cross-section structure as shown in FIG. There is a problem in that, foreign substances are accumulated inside the groove and the smooth drainage function is not performed.

Patent Document 0001, the pre-treatment step of the road surface; Primer application step; Applying a mixed packaging material by adding a pigment to an MMA resin composition containing 17 to 60 parts by weight of aggregate and 0.1 to 30 parts by weight of a curing agent based on 100 parts by weight of the MMA resin; It relates to a non-slip road surface construction method consisting of a drying step and a grooving construction step of the applied paving material (FIG. 2), but Patent Document 0001 also failed to solve the above problems.

Therefore, it is possible to improve the drainage performance, and even if foreign matter penetrates, the entire groove is not blocked, reducing functional deterioration such as drainage, non-slip, drainage, etc., and development of a road surface grooving structure in which the groove is not easily sunk even under repeated load of the vehicle. It was necessary.

Korean Patent Publication No. 10-1341713

In order to improve the problems of the prior art as described above, the present invention is a road surface grooving structure capable of quickly draining water by an inclined surface and reducing the deterioration of the grooving function (drainage, anti-slip) even when foreign matter penetrates into the groove It aims to provide

An object of the present invention is to provide a road surface grooving structure in which durability is improved by reducing depression of the groove.

In the present invention, in the road surface grooving structure formed by cutting the surface of a road, the road surface grooving structure includes main grooves 100, and the main grooves 100 are sequentially arranged in parallel in a horizontal direction. It includes a first groove 110, a second groove 120, a third groove 130, and a fourth groove 140, and the main groove 100 is repeatedly provided on the road surface at regular intervals, thereby The first groove 110, the second groove 120, the third groove 130, and the fourth groove 140 are repeatedly formed in order to provide a road surface grooving structure.

The first groove 110, the second groove 120, the third groove 130, and the fourth groove 140 have an upper and lower narrow shape including a surface perpendicular to the road surface and a surface inclined to the road surface, The first groove 110 and the second groove 120 have the same cross-sectional shape, the third groove 130 and the fourth groove 140 have the same cross-sectional shape, and the first groove 110 and the second groove 110 have the same cross-sectional shape. It is characterized in that the 4 grooves 140 form line symmetry, and the second groove 120 and the third groove 130 form line symmetry.

The first groove 110 is formed by the first vertical surface 111, the first bottom surface 112 and the first inclined surface 113, and the second groove 120 is formed by the second vertical surface 121 , formed by the second bottom surface 122 and the second inclined surface 123, the third groove 130, the third vertical surface 131, the third bottom surface 132 and the third inclined surface 133 And the fourth groove 140 is characterized in that it is formed by the fourth vertical surface 141, the fourth bottom surface 142 and the fourth inclined surface 143.

The main groove 100 is provided in a longitudinal direction, which is the same direction as the longitudinal direction of the road, and the road surface grooved structure further includes a drainage groove 200, wherein the drainage groove 200 is a first groove 210 and a second groove 220, wherein the drainage groove 200 is formed on the road surface to communicate with the main groove 100 while forming an oblique direction with the longitudinal direction.

The first groove 210 is formed by a first vertical surface 211, a first bottom surface 212 and a first inclined surface 213, and the second groove 220 is formed by a second vertical surface 221 , It is formed by the second bottom surface 222 and the second inclined surface 223, the first groove 210 and the second groove 220 have the shape of the upper and lower sides, and the first groove 210 and the second groove 210 It is characterized in that the two grooves 220 form line symmetry.

The main groove 100 is characterized in that it is provided in a transverse direction perpendicular to the longitudinal direction of the road.

It is characterized in that the angle between the center line of the main groove 100 and the center line of the drainage groove 200 is 45 degrees.

The height g of the first vertical surface 111, the second vertical surface 121, the third vertical surface 131, and the fourth vertical surface 141 is 3 to 7 mm, and the first bottom surface 112, the second The width (b) of the bottom surface 122, the third bottom surface 132, and the fourth bottom surface 142 is 3 to 10 mm, and the first groove 110, the second groove 120, and the third groove 130 and the fourth groove 140 have a width a of 5 to 12 mm, and the first groove 110, the second groove 120, the third groove 130 and the fourth groove 140 The interval (c) between the tops of is characterized in that 30 ~ 100mm.

The height (h) of the first vertical surface 211 and the second vertical surface 221 is 5 to 15 mm, and the width (e) of the first bottom surface 212 and the second bottom surface 222 is 7 to 18 mm. And, the width (d) of the upper ends of the first groove 210 and the second groove 220 is 10 to 35 mm, and the distance between the upper ends of the first groove 210 and the second groove 220 (f) Is characterized in that 500 ~ 1,000mm.

Curved surfaces are provided at portions where the upper ends of the first vertical surface 111, the second vertical surface 121, the third vertical surface 131, and the fourth vertical surface 141 meet the road surface, and the first vertical surface 211, 2 It is characterized in that a curved surface is provided at a portion where the upper end of the vertical surface 221 and the road surface meet.

The road surface grooving structure according to the present invention has the following effects.

First, compared to the existing grooving structure, the groove is not easily depressed even under repeated load of the vehicle. In other words, the part where the horizontal road surface and the vertical surface meet is a gentle curve, and the opposite side of the vertical surface is made to meet the horizontal road surface and the inclined surface, so that the inclined surface and the vertical surface formed in the groove work organically, so that the shock caused by the wheel It is possible to maintain the function of grooving by preventing the concentration of excessive stress, minimizing damage to the groove, and preventing the entire depression of the groove.

Second, even if some damage occurs to the corner part over time after forming the groove, the loss of the groove function is small due to the cross-sectional shape formed by the slope and the vertical surface, and even if foreign substances penetrate the groove, it does not block the entire groove, preventing drainage and slipping. function deterioration can be reduced.

Third, since the first groove, the second groove, the third groove, and the fourth groove are provided in order and repeatedly formed on the road surface, a continuous drainage effect can be obtained.

Fourth, the main groove provided with the first groove, the second groove, the third groove, and the fourth groove provided in the longitudinal direction and the drain groove provided with the first groove and the second groove are communicated in an oblique direction and meet each other, so that the overall overall The drainage effect can be maximized.

1 and 2 are conventional grooving cross-sections.
Figure 3 is a cross-sectional view of one embodiment of the main groove of the present invention.
4 is a cross-sectional view of another embodiment of the main groove of the present invention.
5 is a cross-sectional view of an embodiment of a drainage groove of the present invention.
6 is a cross-sectional view of another embodiment of the drainage groove of the present invention.
7 is a plan view of a road surface grooving structure in which drainage grooves are formed while main grooves are formed in the longitudinal direction according to the present invention.
8 is a plan view of a road surface grooved structure in which main grooves are formed in a transverse direction according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification. Throughout the specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a road surface grooving structure formed by cutting the surface of a road. The road surface grooving structure of the present invention may include the main groove 100 .

In the present invention, the embodiment (FIG. 7) in which the main groove 100 is provided in the same direction as the longitudinal direction of the road (herein referred to as the longitudinal direction) and the main groove 100 is provided in the longitudinal direction of the road It includes an embodiment (FIG. 8) provided in a perpendicular direction (herein referred to as a transverse direction).

In the embodiment in which the main groove 100 is provided in the longitudinal direction (FIG. 7), a drain groove 200 formed to communicate with each other while forming an oblique direction with the main groove 100 may be further included, and the main groove ( 100) is provided in the lateral direction (FIG. 8), it is possible to form grooves only with the main groove 100.

Hereinafter, the shape, structure and pattern of the main groove 100 and the drain groove 200 will be described.

One main groove 100 includes four grooves, that is, a first groove 110, a second groove 120, a third groove 130, and a fourth groove 140, and these four grooves are constant. Intervals (reference numerals c in FIGS. 3 and 4) are spaced apart and arranged in parallel in order in the horizontal direction.

That is, the second groove 120 is located on the other side (right side in the embodiment shown in the drawing) of the first groove 110, and the third groove 130 is located on the other side of the second groove 120, The fourth groove 140 is located on the other side of the three grooves 130, the first groove 110 of the other main groove is located on the other side of the fourth groove 140, and the second groove 120 on the other side , the third groove 130 and the fourth groove 140 are provided repeatedly at regular intervals (reference numerals c in FIGS. 3 and 4).

Therefore, when the plurality of main grooves 100 are provided on the road surface in the longitudinal or transverse direction, the first groove 110, the second groove 120, the third groove 130, the fourth groove 140, The first groove 110, the second groove 120, the third groove 130, the fourth groove 140 ... are provided repeatedly at regular intervals on the road surface.

In the embodiment in which the main groove 100 is provided along the longitudinal direction (see FIG. 7), the first groove 110, the second groove 120, the third groove 130 and the fourth groove 140 are horizontal In an embodiment in which the main grooves 100 are provided along the lateral direction and are provided repeatedly at regular intervals in the direction (see FIG. 8), the first groove 110, the second groove 120, and the third groove 130 ) and the fourth groove 140 are repeatedly provided at regular intervals in the longitudinal direction.

The first groove 110, the second groove 120, the third groove 130, and the fourth groove 140 each have an upper and lower narrow shape including one perpendicular to the road surface and one inclined to the road surface. is provided with

The cross-sectional shapes and patterns of the first groove 110, the second groove 120, the third groove 130, and the fourth groove 140 are not formed arbitrarily, but are formed according to special rules.

That is, the first groove 110 and the second groove 120 have the same cross-sectional shape, and the third groove 130 and the fourth groove 140 have the same cross-sectional shape. In addition, the first groove 110 and the fourth groove 140 form line symmetry, and the second groove 120 and third groove 130 form line symmetry.

While the main groove includes four grooves (first groove 110, second groove 120, third groove 130, and fourth groove 140) including one vertical surface and one inclined surface, these four By making the grooves of the dog repeatedly provided in the above structure and pattern, damage to the grooves can be minimized and functions such as drainage and slip prevention can be maximized.

When the configuration of the first groove 110, the second groove 120, the third groove 130 and the fourth groove 140 are described in detail, the first groove 110 has a first vertical surface ( 111), the first bottom surface 112 and the first inclined surface 113, the second groove 120 is formed by the second vertical surface 121, the second bottom surface 122 and the second inclined surface ( 123), the third groove 130 is formed by a third vertical surface 131, a third bottom surface 132 and a third inclined surface 133, and the fourth groove 140 is formed by , It is formed by the fourth vertical surface 141, the fourth bottom surface 142 and the fourth inclined surface 143.

3 and 4 show different embodiments of the main home as above.

In the embodiment shown in FIG. 3, as the first inclined surface 113, the second inclined surface 123, the third inclined surface 133, and the fourth inclined surface 143 go upward, the second groove 120 and the third It is a structure that gathers toward the center between the grooves 130.

In the embodiment shown in FIG. 3, the first groove 110 and the second groove 120 are formed on one side of the first bottom surface 112 and the second bottom surface 122 (left side in the drawing) on the first vertical surface. 111 and the second vertical surface 121 are connected, respectively, and the first inclined surface 113 and the second inclined surface 123 are connected to the other side (right side in the drawing) of the first bottom surface 112 and the second bottom surface 122. ) are connected to each other.

In the embodiment shown in FIG. 3, the third groove 130 and the fourth groove 140 are formed on the third vertical surface on the other side (right side in the drawing) of the third bottom surface 132 and the fourth bottom surface 142. (131) and the fourth vertical surface 141 are connected, respectively, and the third inclined surface 133 and the fourth inclined surface 143 are connected to one side (left side in the drawing) of the third bottom surface 132 and the fourth bottom surface 142. ) are connected to each other.

And, the first vertical surface 111, the second vertical surface 121, the third vertical surface 131, the fourth vertical surface 141 and the first inclined surface 113, the second inclined surface 123, the third inclined surface 133 , the upper end of the fourth inclined surface 143 is connected to the road surface.

In the embodiment shown in FIG. 4, as the first inclined surface 113, the second inclined surface 123, the third inclined surface 133, and the fourth inclined surface 143 go up, the second groove 120 and the third inclined surface 143 are formed. It is a structure away from the center between the grooves 130.

In the embodiment shown in FIG. 4, the first groove 110 and the second groove 120 are formed on the first vertical surface on the other side (right side in the drawing) of the first bottom surface 112 and the second bottom surface 122. 111 and the second vertical surface 121 are connected, respectively, and the first inclined surface 113 and the second inclined surface 123 are connected to one side (left side in the drawing) of the first bottom surface 112 and the second bottom surface 122. ) are connected to each other.

In the embodiment shown in FIG. 4 , the third groove 130 and the fourth groove 140 are formed on one side (left side in the drawing) of the third bottom surface 132 and the fourth bottom surface 142 on the third vertical surface. (131) and the fourth vertical surface 141 are connected, respectively, and the third inclined surface 133 and the fourth inclined surface 143 are connected to the other side (right side in the drawing) of the third bottom surface 132 and the fourth bottom surface 142. ) are connected to each other.

And, the first vertical surface 111, the second vertical surface 121, the third vertical surface 131, the fourth vertical surface 141 and the first inclined surface 113, the second inclined surface 123, the third inclined surface 133 , the upper end of the fourth inclined surface 143 is connected to the road surface.

3 and 4, since the angles between the upper ends of the first inclined surface 113, the second inclined surface 123, the third inclined surface 133, and the fourth inclined surface 143 and the road surface are obtuse angles, the first It has the effect of reducing damage between the top of the inclined surface 113, the second inclined surface 123, the third inclined surface 133, and the fourth inclined surface 143 and the road surface (conventional grooving is performed at corners as shown in FIG. 1). Because it is right angle, it was easy to break).

In addition, the first vertical surface 111, the second vertical surface 121, the third vertical surface 131, and the fourth vertical surface 141 are gently curved at the portion where the top and the road surface meet (shown as right angles in FIGS. 3 and 4). However, it is not limited to a right angle, but can be formed into a curved surface. The shape is the same as that in FIGS. ), it is possible to reduce the wear and tear of the grooved sidewall and edge.

In the embodiment in which the main groove 100 is provided in the longitudinal direction (FIG. 7), a drainage groove 200 formed in an oblique direction with the main groove 100 may be further included.

The angle between the center line of the main groove 100 and the center line of the drain groove 200 is preferably 45 degrees.

One drain groove 200 includes two grooves, that is, a first groove 210 and a second groove 220, and these two grooves are spaced apart at regular intervals (reference numeral f in FIGS. 5 and 6) and are parallel. arranged in a way

In addition, one drain groove 200 and another adjacent drain groove 200 are provided at a predetermined interval (i in FIG. 7). The distance (i) between one drain groove 200 and another adjacent drain groove 200, that is, the second groove 220 of one drain groove 200 and the first groove of the next drain groove 200 The interval (i) between (210) is preferably 20 to 25 m.

Each of the first groove 210 and the second groove 220 has an upper and lower narrow shape including one surface perpendicular to the road surface and one inclined surface with the road surface.

The cross-sectional shapes and patterns of the first groove 210 and the second groove 220 are not formed arbitrarily, but are formed according to special rules.

That is, the first groove 210 and the second groove 220 form line symmetry.

While the drainage groove includes two grooves (first groove 210 and second groove 220) including one vertical surface and one inclined surface, these two grooves are provided in the same structure and pattern as above, so that the groove It can minimize damage and maximize functions such as drainage and anti-slip.

When explaining the configuration of the first groove 210 and the second groove 220 in detail, the first groove 210 includes a first vertical surface 211, a first bottom surface 212, and a first inclined surface. 213, and the second groove 220 is formed by a second vertical surface 221, a second bottom surface 222, and a second inclined surface 223.

5 and 6 show different embodiments of the drainage groove as above.

In the embodiment shown in FIG. 5 , the first inclined surface 213 and the second inclined surface 223 converge toward the center between the first groove 210 and the second groove 220 as they go up.

In the embodiment shown in Figure 5, the first groove 210, the first vertical surface 211 is connected to one side (left side in the drawing) of the first bottom surface 212, the first bottom surface 212 The first inclined surface 213 is connected to the other side (right side in the drawing).

In the embodiment shown in Figure 5, the second groove 220, the second vertical surface 221 is connected to the other side (right side in the drawing) of the second bottom surface 222, the second bottom surface 222 The second inclined surface 223 is connected to one side (left side in the drawing).

Also, upper ends of the first vertical surface 211, the second vertical surface 221, the first inclined surface 213, and the second inclined surface 223 are connected to the road surface.

The embodiment shown in FIG. 6 has a structure in which the first inclined surface 213 and the second inclined surface 223 move away from the center between the first groove 210 and the second groove 220 as they go up.

In the embodiment shown in Figure 6, the first groove 210, the first vertical surface 211 is connected to the other side (right side in the drawing) of the first bottom surface 212, the first bottom surface 212 The first inclined surface 213 is connected to one side (left side in the drawing).

In the embodiment shown in Figure 6, the second groove 220, the second vertical surface 221 is connected to one side (left side in the drawing) of the second bottom surface 222, the second bottom surface 222 The second inclined surface 223 is connected to the other side (right side in the drawing).

Also, upper ends of the first vertical surface 211, the second vertical surface 221, the first inclined surface 213, and the second inclined surface 223 are connected to the road surface.

5 and 6, since the angle between the upper ends of the first inclined surface 213 and the second inclined surface 223 and the road surface is an obtuse angle, the upper and lower ends of the first inclined surface 213 and the second inclined surface 223 It exhibits the effect of reducing damage between road surfaces (conventional grooving has a high risk of damage because the corners are right angles as shown in FIG. 1).

In addition, by placing a gently curved surface (see FIGS. 5 and 6) at the portion where the upper ends of the first vertical surface 211 and the second vertical surface 221 meet the road surface, wear and damage to the side walls and corners of the grooves can be reduced.

The depth, width, and spacing of the main groove and the drain groove may be specially determined.

In the main groove, the height g of the first vertical surface 111, the second vertical surface 121, the third vertical surface 131, and the fourth vertical surface 141 is 3 to 7 mm, and the first bottom surface ( 112), the width (b) of the second bottom surface 122, the third bottom surface 132 and the fourth bottom surface 142 is 3 to 10 mm, and the first groove 110 and the second groove 120 ), the upper width (a) of the third groove 130 and the fourth groove 140 is 5 to 12 mm, and the first groove 110, the second groove 120, the third groove 130 and The distance (c) between the upper ends of the 4 grooves 140 may be 30 to 100 mm.

The distance between the fourth vertical surface 141 of one main groove and the first vertical surface 111 of another main groove, the fourth inclined surface 143 of one main groove and the first inclined surface of the other main groove ( 113) can also be set to 30 to 100 mm.

In the drainage groove, the height (h) of the first vertical surface 211 and the second vertical surface 221 is 5 to 15 mm, and the width (e) of the first bottom surface 212 and the second bottom surface 222 ) is 7 to 18 mm, the upper end width (d) of the first groove 210 and the second groove 220 is 10 to 35 mm, and between the upper ends of the first groove 210 and the second groove 220 The interval (f) of may be 500 to 1,000 mm.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

100. Main home
110. Home 1
111. First vertical plane
112. First floor
113. First slope
120. Home 2
121. Second vertical plane
122. Second floor
123. Second slope
130. Home 3
131. Third vertical plane
132. 3rd floor
133. Third slope
140. Home 4
141. Fourth vertical plane
142. Fourth floor
143. Fourth Slope
200. Drainage groove
210. Home 1
211. First vertical plane
212. First floor
213. First slope
220. Home 2
221. Second vertical plane
222. Second floor
223. Second slope

Claims (10)

In the road surface grooving structure formed by cutting the surface of the road,
The road surface grooving structure includes a main groove 100,
The main groove 100 includes a first groove 110, a second groove 120, a third groove 130, and a fourth groove 140 arranged in parallel in order in the horizontal direction, The groove 110, the second groove 120, the third groove 130, and the fourth groove 140 each have an upper and lower narrow shape including one perpendicular to the road surface and one inclined to the road surface,
The first groove 110 is formed by a first vertical surface 111, a first bottom surface 112 and a first inclined surface 113,
The second groove 120 is formed by a second vertical surface 121, a second bottom surface 122 and a second inclined surface 123,
The third groove 130 is formed by a third vertical surface 131, a third bottom surface 132 and a third inclined surface 133,
The fourth groove 140 is formed by a fourth vertical surface 141, a fourth bottom surface 142 and a fourth inclined surface 143,
Curved surfaces are provided at portions where the upper ends of the first vertical surface 111, the second vertical surface 121, the third vertical surface 131, and the fourth vertical surface 141 meet the road surface,
The first groove 110 and the second groove 120 have the same cross-sectional shape,
The third groove 130 and the fourth groove 140 have the same cross-sectional shape,
The first groove 110 and the fourth groove 140 form line symmetry,
The second groove 120 and the third groove 130 form line symmetry,
Since a plurality of main grooves 100 are repeatedly provided on the road surface at regular intervals, the first groove 110, the second groove 120, the third groove 130, and the fourth groove 140 are sequentially repeated. characterized by the formation of
Road surface grooving structure. delete delete According to claim 1,
The main groove 100 is provided in a longitudinal direction, which is the same direction as the longitudinal direction of the road,
The road surface grooving structure further includes a drainage groove 200,
The drainage groove 200 includes a first groove 210 and a second groove 220,
Characterized in that the drain groove 200 is formed on the road surface to communicate with the main groove 100 while forming the longitudinal direction and the oblique direction
Road surface grooving structure. According to claim 4,
The first groove 210 is formed by a first vertical surface 211, a first bottom surface 212 and a first inclined surface 213,
The second groove 220 is formed by a second vertical surface 221, a second bottom surface 222 and a second inclined surface 223,
The first groove 210 and the second groove 220 have an upper and lower narrow shape,
Characterized in that the first groove 210 and the second groove 220 form line symmetry
Road surface grooving structure. According to claim 1,
Characterized in that the main groove 100 is provided in a transverse direction perpendicular to the longitudinal direction of the road
Road surface grooving structure. According to claim 4 or 5,
Characterized in that the angle between the center line of the main groove 100 and the center line of the drainage groove 200 is 45 degrees
Road surface grooving structure. The method of any one of claims 1 and 4 to 6,
The height g of the first vertical surface 111, the second vertical surface 121, the third vertical surface 131, and the fourth vertical surface 141 is 3 to 7 mm,
The width (b) of the first bottom surface 112, the second bottom surface 122, the third bottom surface 132 and the fourth bottom surface 142 is 3 to 10 mm,
The upper end width (a) of the first groove 110, the second groove 120, the third groove 130 and the fourth groove 140 is 5 to 12 mm,
The distance (c) between the upper ends of the first groove 110, the second groove 120, the third groove 130 and the fourth groove 140 is 30 to 100 mm, characterized in that
Road surface grooving structure. According to claim 5,
The height (h) of the first vertical surface 211 and the second vertical surface 221 is 5 to 15 mm,
The width (e) of the first bottom surface 212 and the second bottom surface 222 is 7 to 18 mm,
The upper end width (d) of the first groove 210 and the second groove 220 is 10 to 35 mm,
Characterized in that the distance (f) between the upper ends of the first groove 210 and the second groove 220 is 500 to 1,000 mm
Road surface grooving structure. According to claim 5,
Characterized in that a curved surface is provided at the portion where the upper end of the first vertical surface 211 and the second vertical surface 221 and the road surface meet.
Road surface grooving structure.

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