Method for reproducing uneven road surfaces

Abstract

This invention provides a method for reproducing a road surface with an uneven shape that can reproduce an existing uneven road surface with extreme fidelity. [Solution] The present invention provides a method for reproducing an uneven road surface, which includes a measurement step S1 for measuring the shape of an existing uneven road surface, a surface material manufacturing step S2 for manufacturing a surface material based on the obtained 3D data, and a surface material installation step S3 for installing the surface material on a base layer. The measurement step S1 includes a first 3D data acquisition step S1a for dividing the shape of the existing uneven road surface into a plurality of blocks and obtaining first 3D data by measuring each of the divided blocks with a 3D laser scanner, a reference point setting step S1b for setting a measurement reference point for each of the blocks, a second 3D data acquisition step S1c for obtaining second 3D data by measuring the 3D shape at the measurement reference point using a method different from that of a 3D laser scanner, and a 3D data correction step S1d for correcting the first 3D data using the second 3D data.

Description

Technical Field

[0001] The present invention relates to a method for reproducing an uneven road surface.

Background Art

[0002] Various road surfaces are formed as test courses for testing the performance of automobiles. For example, a road surface with a specific sliding friction resistance value for examining the braking performance of an automobile, the grip force of tires, etc., an inclined plane for examining the center of gravity, inclination, etc. of an automobile, an uneven road surface for examining the ride comfort such as the suspension of an automobile, the rigidity of each part, noise, tire performance, etc.

[0003] An uneven road surface is constructed by imitating a road surface with irregularities caused by deterioration, settlement, wear, etc. Conventionally, as a method for constructing a specific uneven road surface, a photograph is taken, the distance and height are measured, a mold is made of plaster, etc., and based on the data, in a test course, a person raises cement, etc. here and there on a smooth road surface to reproduce it.

[0004] In Patent Document 1, as a method for constructing an uneven road surface, a method is disclosed in which two rod-shaped members reproducing the shape of the uneven road surface are laid almost parallel, a paving material is filled between the members, and the filled paving material is hardened.

[0005] Further, in Patent Document 2, a method for reproducing an uneven road surface is disclosed in which the surface shape of the uneven road surface is measured, a mold for reproducing the surface shape is produced, a surface layer material is formed using the mold, and the formed surface layer material is installed on a base layer.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

[0007] In recent years, there has been a growing demand for test course construction that reproduces existing uneven surfaces with extreme fidelity. However, it has become clear that conventional methods make it difficult to reproduce uneven surfaces with such accuracy.

[0008] Therefore, the present invention provides a method for reproducing a road surface having an uneven shape that can reproduce an existing uneven road surface with extreme fidelity. [Means for solving the problem]

[0009] The present inventors have found that a method for reproducing uneven road surfaces having the following characteristics can solve the above problem.

[0010] 《Aspect 1》 In one embodiment, the present invention provides a method for reproducing an uneven road surface, comprising a measurement step for measuring the shape of an existing uneven road surface, a surface material manufacturing step for manufacturing a surface material based on three-dimensional data obtained by the measurement step, and a surface material installation step for installing the surface material on a base layer, The aforementioned measurement step is The first 3D data acquisition process involves dividing the shape of the existing uneven road surface into multiple blocks, and then measuring each of the divided blocks with a 3D laser scanner to obtain the first 3D data. A reference point setting step, in which a measurement reference point is set for each of the divided blocks, A second 3D data acquisition step, in which the 3D shape is measured at the aforementioned measurement reference point using a method different from that of the 3D laser scanner to obtain second 3D data, and A 3D data correction step, in which the first 3D data is corrected using the second 3D data. This relates to a method for reproducing uneven road surfaces, including the method described above.

[0011] The inventors noticed that in methods for reproducing uneven road surfaces, the reproduction accuracy sometimes suffers from low accuracy. Because the irregularities of the uneven road surface are not very large, this decrease in reproduction accuracy is not very noticeable, but it cannot be ignored from the standpoint of reproducing existing uneven road surfaces with extreme fidelity.

[0012] The inventors then diligently investigated whether the cause of this problem was the measurement accuracy of the existing uneven road surface, the inability to accurately manufacture the mold from the measurement data, the inability to accurately manufacture the surface material from the mold, or the accuracy of the installation of the surface material on the base layer. They found that the biggest factor was the measurement accuracy of the existing uneven road surface.

[0013] In particular, the accuracy of the reproduced uneven road surface tended to decrease at positions far from the 3D laser scanner used to measure the existing uneven road surface. It was found that when the shape of the existing uneven road surface is divided into multiple sections in the longitudinal direction and the 3D data is combined, the 3D data combined with errors in the longitudinal direction will result in large errors during the process of multiple combinations.

[0014] For example, consider a case where an uneven road surface extending 100m in the X direction is divided into blocks of 10m each in the X direction and reproduced. Suppose that the Z-direction value of the 3D data measured by a 3D laser scanner for the first block is (0.000) with the near side as the origin, and the point 10m away is (0.102). If the true value of the point 10m away is (0.100), then the error at 10m away is (0.002). When this point 10m away is measured for the second block, it is treated as the near side as the origin, and the Z-direction value of the 3D data is taken as (0.000). If the Z-direction value of the 3D data measured by the 3D laser scanner for the second block is (0.203), and the true value of the point 10m away is (0.200), then the measurement error for the second block is (0.003). In this case, the sum of the measurement errors from the origin of the first block to the edge of the second block is (0.005). If a 100m uneven road surface is divided into 10 blocks and similar measurements are performed in this way, it may result in errors that cannot be ignored from the standpoint of faithful reproduction. Furthermore, although the above example only considers values ​​in the Z direction, similar errors can actually occur in the X and Y directions as well.

[0015] To address this issue, it was found that accuracy could be significantly improved by first obtaining 3D data using a 3D laser scanner, then obtaining 3D data by measuring the 3D shape using a method different from the 3D laser scanner, and finally correcting the 3D data with the 3D data from the 3D scanner.

[0016] 3D laser scanners are essential for measuring existing uneven road surfaces because they can measure uneven shapes quickly and over a wide area. However, by correcting the data obtained using other measurement methods, it has become possible to reproduce uneven road surfaces with very high accuracy with minimal effort, without significantly compromising the convenience of 3D laser scanners.

[0017] 《Aspect 2》 In one embodiment, the present invention is The three-dimensional data correction step includes replacing the data at the measurement reference point in the first three-dimensional data with the second three-dimensional data, and correcting the first three-dimensional data that could not be replaced by the second three-dimensional data according to the distance from the origin to the measurement reference point, relates to the method for reproducing the uneven road surface as described above.

[0018] According to this embodiment, not only the error at the measurement reference point can be corrected, but also the error at points other than the measurement reference point can be corrected, so that the shape of the uneven road surface can be reproduced more faithfully.

[0019] 《Aspect 3》 In one embodiment, the present invention in the reference point setting step, at least one of the measurement reference points is provided on the boundary of the divided block, and in the three-dimensional data correction step, the second three-dimensional data measured at the measurement reference point on the boundary is commonly used in each of the divided blocks, relates to the method for reproducing the uneven road surface as described above.

[0020] According to this embodiment, since the measurement reference points are provided on the boundary where the block is divided, the second three-dimensional data measured can be used in both blocks divided at the boundary, thereby reducing the number of measurements for obtaining the second three-dimensional data. Also, even if the shape of the existing uneven road surface is finely divided and measured, the three-dimensional data of the existing uneven road surface can be obtained with high accuracy even on the divided surface.

[0021] 《Aspect 4》 In one embodiment, the present invention relates to the method for reproducing the uneven road surface as described above, wherein the second three-dimensional data is measured by a leveling instrument.

[0022] According to this embodiment, by using a leveling instrument, highly reliable data can be obtained as second 3D data.

[0023] Appearance 5 In one embodiment, the present invention is The surface material manufacturing process includes a mold manufacturing process for manufacturing a mold to reproduce the shape of the existing uneven road surface, and a surface material molding process for molding a surface material having an uneven shape using the mold. The present invention relates to a method for reproducing an uneven road surface, wherein in the mold manufacturing step and the surface material molding step, the mold and the surface material are manufactured by dividing them into multiple sections in the length direction and / or width direction.

[0024] According to this embodiment, the surface material can be manufactured relatively easily by dividing the mold and surface material into multiple parts.

[0025] 《Aspect 6》 In one embodiment, the present invention is The above-mentioned surface material installation process is, A height adjustment step involves installing a height adjuster between the base layer and the surface layer material to adjust the height. A backup material installation step, in which a backup material is installed at an outer position in the width direction and / or length direction of the plane on which the surface material of the base layer is arranged. A grout injection step in which grout material is injected between the base layer and the surface layer material, and A grout hardening process in which the injected grout material is hardened. This relates to the method for reproducing the uneven road surface described above.

[0026] According to this embodiment, the height level of the surface layer can be reproduced with high precision by using a height adjuster. Furthermore, by using a backup material, even when using grout with relatively low viscosity, the outflow of the grout injected between the base layer and the surface layer can be prevented, so that the grout can be injected without any gaps between the base layer and the surface layer.

[0027] Because vehicles pass over the reproduced uneven road surface, there is a risk of cracks developing on the uneven surface. If grout material is not properly injected between the base layer and the surface layer, high stress will be applied to the reproduced uneven road surface, especially in the gaps where grout material is not present, which may cause cracks to develop. Therefore, this embodiment, which allows for the injection of grout material without gaps, is advantageous.

[0028] Appearance 7 In one embodiment, the present invention is The height adjuster is configured to allow height adjustment even after the grout material has been injected, and The present invention relates to a method for reproducing an uneven road surface, which includes a height fine-adjustment step between the grout injection step and the grout hardening step, in which the height of the surface material is finely adjusted using the height adjuster.

[0029] In this embodiment, since the height of the surface material may change due to uplift and subsidence of the land over time, it is very advantageous that the height of the surface material constituting the uneven road surface can be adjusted by a height adjuster even after the grout material has hardened. For example, if the height adjuster is of the jack type and the screw part of the jack is filled with grease, it becomes easier to adjust the height of the height adjuster even after the grout material has hardened. [Effects of the Invention]

[0030] According to the present invention, it is possible to provide a method for reproducing a road surface having an uneven shape that can reproduce an existing uneven road surface with extreme fidelity. [Brief explanation of the drawing]

[0031] [Figure 1] Figure 1 shows a flowchart of one embodiment of the method of the present invention. [Figure 2] Figure 2 schematically shows one embodiment of the surface material installation process S3. [Modes for carrying out the invention]

[0032] The present invention will be specifically described using the following embodiments as examples, but the present invention is not limited thereto. Unless otherwise specified, configurations well known to those skilled in the art can be used for each embodiment.

[0033] In this specification, the upward and downward directions refer to the opposite and positive directions of gravity, respectively. In this specification, the longitudinal direction refers to the direction in which a vehicle moves on the road surface, and the width direction refers to the direction perpendicular to the longitudinal direction. The horizontal direction refers to the longitudinal direction and / or the width direction. The X, Y, and Z directions can be considered as the longitudinal direction, width direction, and up and down direction, respectively.

[0034] Method for recreating uneven road surfaces Figure 1 shows a flowchart of one embodiment of the method of the present invention.

[0035] The present invention provides a method for reproducing an uneven road surface, which includes a measurement step S1 for measuring the shape of an existing uneven road surface, a surface material manufacturing step S2 for manufacturing a surface material based on the three-dimensional data obtained in the measurement step, and a surface material installation step S3 for installing the surface material on a base layer.

[0036] <Measurement process S1> In the measurement process S1 for measuring the shape of an existing uneven road surface, first, the shape of the existing uneven road surface is divided into multiple blocks, and for each of the divided blocks, a first 3D data acquisition process S1a is performed in which a 3D laser scanner is used to measure and obtain first 3D data.

[0037] The 3D laser scanner used here is a measuring instrument commonly used in this field, which can acquire the 3D coordinates of the surface shape by irradiating the object to be measured with a laser. It can measure quickly and non-contact using a laser, and can obtain high-density, planar point cloud data. The 3D coordinates can be calculated from the distance to the object and the irradiation angle, which are determined from the laser reflection time. The data obtained with the 3D laser scanner may be adjusted to avoid excessively high measurement accuracy, or the obtained data may be corrected, so that only the shape of the uneven surface is reproduced, ignoring fine roughness and other imperfections.

[0038] The existing uneven road surface can be virtually divided into multiple blocks. For example, the shape of an existing uneven road surface can be divided lengthwise into sections of 20m, 10m, 5m, or 3m intervals, and measured with a 3D laser scanner to obtain first 3D data. On the other hand, the widthwise direction of the uneven road surface can be divided and measured or not. Since the accuracy of the first 3D data decreases at positions far from the 3D laser scanner, relatively high accuracy can be obtained from the first 3D data by dividing and measuring within the ranges described above.

[0039] In the measurement step S1, a reference point setting step S1b is performed to set at least one measurement reference point for each of the divided blocks. The reference point setting step S1b may be performed before the first 3D data acquisition step S1a, and 3D data may be acquired in the first 3D data acquisition step S1a for the set measurement reference points, or the reference point setting step S1b may be performed after the first 3D data acquisition step S1a, and points of the 3D data acquired by the 3D laser scanner may be defined as measurement reference points.

[0040] Measurement reference points can be established on the boundaries of the divided blocks of uneven road surface. For example, if the shape of an existing uneven road surface is divided lengthwise into two blocks, a first block and a second block, the first and second blocks will have the same boundary line on a plane in the widthwise and vertical directions. At least one measurement reference point can be established on this boundary line, and 3D data can be acquired at that measurement reference point using a 3D laser scanner and other methods to correct the data. The corrected data from the measurement reference point on the boundary can then be used as common 3D data for each of the divided blocks, thereby reducing the number of measurements required to obtain the second 3D data. Furthermore, even if the shape of the existing uneven road surface is divided into multiple fine sections for measurement, 3D data of the existing uneven road surface can be acquired with high accuracy even at the dividing surfaces.

[0041] In measurement step S1, a second 3D data acquisition step S1c is performed to obtain second 3D data by measuring the 3D shape at at least one set measurement reference point using a method different from that of a 3D laser scanner. Here, the method different from that of a 3D laser scanner is not particularly limited as long as it can measure the 3D data with high accuracy, but for example, it may be measurement using a leveling instrument that is simple and capable of high-precision measurement.

[0042] Examples of leveling instruments include: a leveling instrument that combines a tripod and a leveling rod to directly observe the difference in elevation between points; a theodolite instrument that uses a lens to identify a target object and measures the horizontal and vertical angles from a reference point by rotating it horizontally and vertically; and a total station instrument that combines a light-wave distance meter and a theodolite to simultaneously measure angles and distances.

[0043] In measurement step S1, a 3D data correction step S1d is performed, in which the first 3D data is corrected using the second 3D data. Here, since the first 3D data obtained by the 3D laser scanner may contain errors, the second 3D data obtained by a leveling instrument or the like can be treated as the correct data at the measurement reference point.

[0044] In the 3D data correction process S1d, the first 3D data that could not be replaced by the second 3D data can be corrected according to the distance from the origin to the measurement reference point.

[0045] For example, suppose that for the first block divided into 10m intervals along the length, the value at the origin in the Z direction is (0.000), and the value at a point 10m away measured by a 3D laser scanner is (0.102). If we consider the value at a point 10m away measured by a method other than the 3D laser scanner to be (0.100) as the true value, then the error at 10m away can be evaluated as an absolute value of (0.002) or as a percentage error of 2%. Now, if the measurement result at 5m from the origin by the 3D laser scanner is (0.312), we can consider that an error of half the error at 10m has occurred as an absolute value, and correct the measurement result at 5m away by half of (0.002), which is (0.001), to get (0.311). Alternatively, we can consider that an error of half of 2%, which is 1%, has occurred, and correct the measurement result at 5m away to (0.30891). In this way, the first 3D data, excluding the measurement reference point, can be gradually corrected according to the distance from the origin to the measurement reference point.

[0046] When multiple measurement reference points are set within a single block, the method for correcting errors can be arbitrarily and reasonably determined. For example, in a block of length 10m, if the Z-direction values ​​of the first 3D data at the origin, 5m away, and 10m away are (0.000), (0.312), and (0.102), respectively, and the Z-direction values ​​of the second 3D data are (0.000), (0.310), and (0.101), respectively, then the Z-direction values ​​can be corrected by (0.0004) per meter from the origin to 5m away, and by (0.0002) per meter from 5m away to 10m away. These correction methods can be implemented relatively easily through programming.

[0047] <Surface material production process S2> In the present invention, after the measurement step described above, a surface material manufacturing step S2 is performed to manufacture a surface material based on the obtained three-dimensional data. The method for manufacturing the surface material is not particularly limited as long as it is a method that uses three-dimensional data, and a 3D printer or the like can be used, but typically it may include a mold manufacturing step S2a in which a mold is made to reproduce the shape of an existing uneven road surface using three-dimensional data, and a surface material manufacturing step S2b in which a surface material having an uneven shape is made using the mold.

[0048] In the mold making process S2a, for example, the 3D data obtained in the measurement process S1 can be converted into mold processing data, and then the foamed resin can be 3D cut using the mold processing data. However, in the mold making process S2a, the means are not particularly limited as long as a mold having the inverted shape of the uneven road surface to be reproduced can be made. For example, a mold having the inverted shape of the uneven road surface may be made using a 3D printer.

[0049] In the mold making process S2a, the mold of the uneven road surface to be reproduced can be made by dividing it in the length direction and / or width direction. In this case, the length and / or width of the division may be the same as the size of the block divided in the measurement process S1, or it may be different.

[0050] The surface material preparation process S2b can be carried out by the same process as that used to manufacture ordinary precast concrete, except that the mold obtained in the mold preparation process S2a is used.

[0051] For example, in the surface material preparation step S2b, the surface material can be prepared by laying the mold obtained in the mold preparation step S2a inside a formwork made of steel or the like, pouring concrete into the steel formwork, and curing it. In this case, the mold obtained in the mold preparation step S2a is laid inside the steel formwork so that the surface having an uneven, inverted shape faces upward. Furthermore, by arranging reinforcing bars in the steel formwork, the surface material can be obtained as reinforced concrete. In addition, the steel formwork may be configured to form injection holes in the surface material for injecting the grout material described later, and / or to allow the installation of connectors in the surface material for connecting divided surface material sections.

[0052] In the surface material manufacturing process S2b, the surface material for the uneven road surface to be reproduced can be manufactured by dividing it in the length and / or width directions. In this case, the length and / or width of the divisions may be the same as the size of the blocks divided in the measurement process S1 and / or the molds manufactured in the mold manufacturing process S2a, or they may be different in size. For example, multiple divided molds may be laid out in a formwork made of steel or the like to produce one surface material. The size of the divided surface material can be determined considering transportation to the construction site, etc.

[0053] <Surface material installation process S3> In the present invention, after the surface material manufacturing step S2 described above, a surface material installation step S3 is performed in which the surface material is installed on the base layer. The surface material installation step S3 is not particularly limited as long as the surface material is installed in a manner that reproduces the existing uneven road surface. For example, the surface material installation step S3 may include a height adjustment step S3a, in which a height adjuster is installed between the base layer and the surface material to adjust the height; a backup material installation step S3b, in which backup material is installed at the outer positions in the width and length directions of the plane on which the surface material of the base layer is placed; a grout material injection step S3c, in which grout material is injected between the base layer and the surface material; and a grout material hardening step S3d, in which the injected grout material is hardened.

[0054] Figure 2 schematically shows one embodiment of the surface material installation process S3. In this embodiment, two surface materials 21 and 22 are installed adjacent to each other in the width direction on the base layer 10. The two surface materials 21 and 22 can be installed so that the two tires of a vehicle pass over each of the surface materials 21 and 22.

[0055] In the initial state, the heights of the surface materials 21 and 22 on top of the base layer 10 are not aligned. Therefore, in the height adjustment process S3a, the heights of the surface materials 21 and 22 on top of the base layer 10 are adjusted using height adjusters 31 and 32. Here, two height adjusters 31 and 32 are installed between the base layer 10 and the two surface materials 21 and 22. However, the surface materials 21 and 22 can be divided into multiple sections in the longitudinal direction, and multiple height adjusters 31 and 32 can also be installed in the longitudinal direction on a single surface material. In this height adjustment process S3a, the heights of the surface materials 21 and 22 are aligned.

[0056] In the backup material installation step S3b, backup materials 41 and 42 are installed on the base layer 10 at the outer positions in the width direction of the surface materials 21 and 22. Sponge-like porous resin material can be used as the backup materials 41 and 42. The backup materials 41 and 42 may be installed at the outer positions of the surface materials 21 and 22 in both the width and length directions, or the sponge-like backup materials 41 and 42 may be pressed and installed between the surface materials 21 and 22 and the base layer 10. The backup materials 41 and 42 do not need to surround each surface material 21 and 22 individually, and can surround multiple surface materials 21 and 22 together.

[0057] In the grout injection process S3c, grout material 50a is injected between the base layer 10 and the surface layers 21 and 22. When injecting, backup materials 41 and 42 are not installed at the injection site, and backup materials 41 and 42 can be installed after injection. Mortar can be used as the grout material. The injection site of the grout material 50a is not particularly limited and may be injected through grout injection holes provided at the ends of the surface layers 21 and 22, or it may be injected between the two surface layers 21 and 22.

[0058] In this embodiment, the grout material 50a is injected between the two surface materials 21 and 22. However, a backup material may also be placed between the two surface materials 21 and 22 in the width direction and length direction, and the grout material 50a may be injected at other locations, for example, through the grout material injection holes described above.

[0059] The presence of backup materials 41 and 42 allows the grout material 50a to have a relatively low viscosity, preventing it from flowing out between the base layer 10 and the surface layers 21 and 22. This enables the grout material 50a to be injected without any gaps between the base layer 10 and the surface layers 22.

[0060] Furthermore, it is preferable that the height adjusters 31 and 32 are configured so that the height of the surface materials 21 and 22 can be finely adjusted even after the grout material 50a has hardened. The configuration of such height adjusters 31 and 32 is not particularly limited, but by using a jack type for the height adjusters 31 and 32 and filling the screw portion of the jack with grease, it is possible to easily adjust the height of the height adjusters 31 and 32 even after the grout material 50a has hardened.

[0061] Finally, by hardening the injected grout material 50a in the grout material hardening process S3d, surface materials 21 and 22 fixed to the base layer 10 with hardened grout material 50b can be obtained, thereby reproducing an uneven road surface. In Figure 2, the backup materials 41 and 42 are not removed in the grout material hardening process S3d, but they may be removed in this grout material hardening process S3d. [Explanation of Symbols]

[0062] 10...Base layer 21,22…Surface material 31, 32... Height adjuster 41, 42… Backup material 50a, 50b…Grout material

Claims

1. A method for reproducing an uneven road surface, comprising a measurement step for measuring the shape of an existing uneven road surface, a surface material manufacturing step for manufacturing a surface material based on the three-dimensional data obtained by the measurement step, and a surface material installation step for installing the surface material on a base layer, The aforementioned measurement step is The first 3D data acquisition process involves dividing the shape of the existing uneven road surface into multiple blocks, and then measuring each of the divided blocks with a 3D laser scanner to obtain first 3D data. A reference point setting step, in which a measurement reference point is set for each of the divided blocks, A second three-dimensional data acquisition step, in which the three-dimensional shape is measured at the aforementioned measurement reference point using a method different from that of the three-dimensional laser scanner to obtain second three-dimensional data, and A three-dimensional data correction step, in which the first three-dimensional data is corrected using the second three-dimensional data. A method for reproducing an uneven road surface, including the reproduction of an uneven road surface.

2. The aforementioned three-dimensional data correction process, Replacing the data at the measurement reference point in the first three-dimensional data with the second three-dimensional data, and The first three-dimensional data that could not be replaced by the second three-dimensional data is corrected according to the distance from the origin to the measurement reference point. A method for reproducing an uneven road surface according to claim 1, including the method described in claim 1.

3. In the above reference point setting step, at least one of the measurement reference points is provided on the boundary of the divided block, and In the three-dimensional data correction step, the second three-dimensional data measured at the measurement reference point on the boundary is used in common in each of the divided blocks. A method for reproducing an uneven road surface as described in claim 1.

4. The method for reproducing an uneven road surface according to claim 1, wherein the second three-dimensional data is measured by a leveling instrument.

5. The surface material manufacturing process includes a mold manufacturing process for manufacturing a mold to reproduce the shape of the existing uneven road surface, and a surface material molding process for molding a surface material having an uneven shape using the mold. The method for reproducing an uneven road surface according to claim 1, wherein in the mold making step and the surface material molding step, the mold and the surface material are manufactured by dividing them into multiple parts in the length direction and / or width direction.

6. The above-mentioned surface material installation process is, A height adjustment step involves installing a height adjuster between the base layer and the surface layer material to adjust the height. A backup material installation step, in which a backup material is installed at an outer position in the width direction and / or length direction of the plane on which the surface material of the base layer is arranged. A grout injection step in which grout material is injected between the base layer and the surface layer material, and A grout hardening process in which the injected grout material is hardened. A method for reproducing an uneven road surface according to claim 1, including the method described in claim 1.

7. The height adjuster is configured to allow height adjustment even after the grout material has hardened. The method for reproducing an uneven road surface as described in claim 6.

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