How to recreate uneven road surfaces

The method improves the accuracy of reproducing uneven road surfaces by using 3D laser scanning and correction techniques, along with reference points and precise installation, addressing inaccuracies in conventional methods.

JP7728423B1Active Publication Date: 2025-08-22NIPPO CO LTD
View PDF 3 Cites 0 Cited by

Patent Information

Application Number
JP2024173378
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2024-10-02
Publication Date
2025-08-22
Estimated Expiration
2044-10-02

AI Technical Summary

Technical Problem

Conventional methods struggle to accurately replicate existing uneven road surfaces for testing automobile performance, due to inaccuracies in measurement, mold creation, and installation of surface materials.

Method used

A method involving three-dimensional data acquisition using a 3D laser scanner, followed by correction with a different measurement method, and setting reference points to enhance accuracy, combined with mold and surface layer material production and installation steps to faithfully reproduce uneven road surfaces.

Benefits of technology

Enables highly accurate reproduction of uneven road surfaces, reducing errors and ensuring faithful replication of existing road conditions for testing purposes.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 0007728423000001_ABST
    Figure 0007728423000001_ABST
Patent Text Reader

Abstract

To provide a method for reproducing a road surface having an uneven shape, capable of reproducing an existing uneven road surface very faithfully. [Solution] The method for reproducing an uneven road surface of the present invention includes a measurement process S1 for measuring the shape of an existing uneven road surface, a surface material preparation process S2 for preparing a surface material based on the obtained three-dimensional data, and a surface material installation process S3 for installing the surface material on a base layer, and the measurement process S1 includes a first three-dimensional data acquisition process S1a for dividing the shape of the existing uneven road surface into a plurality of blocks and measuring each of the divided blocks with a three-dimensional laser scanner to obtain first three-dimensional data, a reference point setting process S1b for setting a measurement reference point for each block, a second three-dimensional data acquisition process S1c for measuring the three-dimensional shape at the measurement reference point using a method different from the three-dimensional laser scanner to obtain second three-dimensional data, and a three-dimensional data correction process S1d for correcting the first three-dimensional data using the second three-dimensional data.
Need to check novelty before this filing date? Find Prior Art

Description

[Technical Field]

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

[0002] Various road surfaces are created as test courses for testing automobile performance, including road surfaces with specific sliding friction resistance values ​​to check the braking performance and tire grip of an automobile, slopes to check the center of gravity and tilt of an automobile, and uneven surfaces to check the ride comfort of an automobile, including the suspension, rigidity of each part, noise, and tire performance.

[0003] An uneven road surface is constructed to mimic the unevenness that occurs when roads deteriorate, sink, wear, etc. Conventionally, a specific uneven road surface has been simulated by taking photographs, measuring distances and heights, making plaster casts, and then manually piling up cement or other materials in places on a smooth road surface on a test course based on that data.

[0004] Patent Document 1 discloses a method for constructing an uneven road surface, in which two rod-shaped mold members that reproduce the shape of the uneven road surface are laid almost parallel to one another, paving material is filled between the mold members, and the filled paving material is allowed to harden.

[0005] Furthermore, Patent Document 2 discloses a method for reproducing an uneven road surface by measuring the surface shape of the uneven road surface, creating a mold for reproducing that surface shape, using that mold to form a surface layer material, and placing the formed surface layer material on a base layer. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 08-035202 [Patent Document 2] Japanese Patent Publication No. 2022-102046 Summary of the Invention [Problem to be solved by the invention]

[0007] In recent years, there has been a growing demand for test courses to be constructed that accurately replicate existing uneven road surfaces. However, it has been found that it is difficult to accurately replicate uneven road surfaces using conventional technology.

[0008] Therefore, the present invention provides a method for reproducing a road surface having an uneven shape, which can reproduce an existing uneven road surface very faithfully. [Means for solving the problem]

[0009] The present inventors have found that the above-mentioned problems can be solved by a method for reproducing an uneven road surface having the following features.

[0010] <<Aspect 1>> In one embodiment, the present invention provides a method for reproducing an uneven road surface, the method including: a measuring step for measuring the shape of an existing uneven road surface; a surface layer material preparation step for preparing a surface layer material based on three-dimensional data obtained by the measuring step; and a surface layer material installation step for installing the surface layer material on a base layer, The measuring step a first three-dimensional data acquisition step of dividing the shape of the existing uneven road surface into a plurality of blocks and measuring each of the divided blocks with a three-dimensional laser scanner to obtain first three-dimensional data; a reference point setting step of setting a measurement reference point for each of the divided blocks; a second three-dimensional data acquisition step of measuring the three-dimensional shape at the measurement reference point using a method different from that used by the three-dimensional laser scanner to obtain second three-dimensional data; and a three-dimensional data correcting step of correcting the first three-dimensional data using the second three-dimensional data; The present invention relates to a method for reproducing an uneven road surface, including:

[0011] The inventors have noticed that when an attempt is made to reproduce an uneven road surface using a method for reproducing an uneven road surface, the reproduction accuracy may be reduced. Because the unevenness of the uneven road surface is not particularly large, this reduction in reproduction accuracy is quite difficult to notice, but it is not negligible from the perspective of extremely faithfully reproducing an existing uneven road surface.

[0012] The inventors then conducted extensive research into this issue, investigating whether the problem was due to the accuracy of measurements of existing uneven road surfaces, the inability to accurately create molds from measurement data, the inability to accurately create surface material from the mold, or the accuracy of installation of the surface material on the base layer. As a result, they found that the biggest factor was the accuracy of measurements of existing uneven road surfaces.

[0013] In particular, the accuracy of the reproduced rough road surface tends to be lower at positions farther away from the 3D laser scanner used to measure the existing rough road surface. It was also found that when the shape of the existing rough road surface is divided into multiple pieces along its length and the resulting 3D data is combined, 3D data that is combined while retaining errors along the length will result in large errors as it is combined multiple times.

[0014] For example, suppose you want to recreate an uneven road surface that stretches 100 m in the X direction by dividing it into blocks of 10 m each in the X direction. The Z-axis value of the 3D data measured by the 3D laser scanner for the first block is (0.000), with the near side as the origin, and (0.102) at a point 10 m away. If the true value at the point 10 m away is (0.100), the error at 10 m away will be (0.002). When measuring the second block, this point 10 m away will be treated as the near side's origin, and the Z-axis value of the 3D data will be (0.000). If the Z-axis value of the 3D data measured by the 3D laser scanner for the second block is (0.203), and the true value at the point 10 m away is (0.200), the measurement error for the second block will be (0.003). In this case, the total measurement error from the origin of the first block to the edge of the second block is (0.005). If a 100m rough road surface were divided into 10 blocks and similar measurements were taken in this way, errors that cannot be ignored from the perspective of faithful reproduction could occur. Also, in the above example, only the Z direction value was considered, but in reality, similar errors could occur in the X and Y directions as well.

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

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

[0017] <<Aspect 2>> In one embodiment, the present invention provides a method for producing a medicament for the treatment of a pulmonary arthritis. The three-dimensional data correction step replacing the data at the measurement reference point among the first three-dimensional data with the second three-dimensional data; and correcting the first three-dimensional data that has not been replaced by the second three-dimensional data in accordance with a distance from an origin to the measurement reference point; The present invention relates to the method for reproducing an uneven road surface, including the above.

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

[0019] Aspect 3 In one embodiment, the present invention provides a method for producing a medicament for the treatment of a pulmonary arthritis. In the reference point setting step, at least one measurement reference point is set on a 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. This relates to a method for reproducing the above-mentioned uneven road surface.

[0020] According to this embodiment, by setting the measurement reference point on the divided boundary, the measured second three-dimensional data can be used in both blocks divided by the boundary, thereby reducing the number of measurements required to obtain the second three-dimensional data. Furthermore, even if the shape of an existing uneven road surface is finely divided and measured, it is possible to obtain three-dimensional data of the existing uneven road surface with high accuracy even on the divided surfaces.

[0021] Aspect 4 In one embodiment, the present invention provides a method for producing a medicament for the treatment of a pulmonary arthritis. The present invention relates to the method for reproducing an uneven road surface, 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 the second three-dimensional data.

[0023] Aspect 5 In one embodiment, the present invention provides a method for producing a medicament for the treatment of a pulmonary arthritis. the surface layer material manufacturing step includes a mold manufacturing step of manufacturing a mold for reproducing the shape of the existing uneven road surface, and a surface layer material molding step of molding a surface layer material having an uneven shape using the mold, The present invention relates to the method for reproducing an uneven road surface, wherein in the mold manufacturing step and the surface layer material forming step, the mold and the surface layer material are manufactured by being divided into a plurality of parts in the length direction and / or width direction.

[0024] According to this embodiment, the mold and the surface layer material are produced in multiple separate parts, which makes it possible to produce the surface layer material relatively easily.

[0025] Aspect 6 In one embodiment, the present invention provides a method for producing a medicament for the treatment of a pulmonary arthritis. The surface layer material installation step a height adjusting step of adjusting the height by installing a height adjuster between the base layer and the surface layer material; a backup material installation step of installing a backup material at an outer position in the width direction and / or length direction of a plane on which the surface layer material of the base layer is arranged; a grout injection step of injecting a grout material between the base layer and the surface layer material; and a grout hardening step of hardening the injected grout; The present invention relates to the method for reproducing an uneven road surface, including the above.

[0026] According to this embodiment, the height level of the surface layer material can be reproduced with high accuracy by using the height adjuster. In addition, the use of the backup material can prevent the outflow of the grout material injected between the base layer and the surface layer material, even when a grout material with a relatively low viscosity is used, so the grout material can be injected without leaving any gaps between the base layer and the surface layer material.

[0027] Since vehicles pass over the reproduced uneven road surface, cracks may occur in the uneven road surface. If the grout material is not properly injected between the base layer and the surface layer, high stress is applied to the reproduced uneven road surface, mainly in the gaps where no grout material is present, and cracks may occur. Therefore, such an embodiment, which allows the grout material to be injected without any gaps, is advantageous.

[0028] Aspect 7 In one embodiment, the present invention provides a method for producing a medicament for the treatment of a pulmonary arthritis. The height adjuster is configured to allow height adjustment even after the grout material has been poured; and The present invention relates to the method for reproducing an uneven road surface, which includes a fine height adjustment step of finely adjusting the height of the surface layer material with the height adjuster between the grout material injection step and the grout material hardening step.

[0029] This embodiment is extremely advantageous because the height of the surface layer material can change due to land upheaval and subsidence over time, and the height of the surface layer material that makes up the uneven road surface can be adjusted using the height adjuster even after the grout material has hardened. For example, if the height adjuster is a jack type and the threaded part of the jack is filled with grease, the height of the height adjuster can be easily adjusted 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, which can reproduce an existing uneven road surface very faithfully. [Brief explanation of the drawings]

[0031] [Figure 1] FIG. 1 shows a flow chart of one embodiment of the method of the present invention. [Figure 2] FIG. 2 shows a schematic diagram of one embodiment of the surface layer installation step S3. DETAILED DESCRIPTION OF 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, a configuration known to those skilled in the art can be used.

[0033] In this specification, the upward direction and the downward direction refer to the opposite and forward directions of gravity, respectively. Furthermore, in this specification, the longitudinal direction refers to the direction in which the 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 direction, Y direction, and Z direction can be considered as the longitudinal direction, width direction, and up-down direction, respectively.

[0034] <<How to recreate an uneven road surface>> FIG. 1 shows a flow chart of one embodiment of the method of the present invention.

[0035] The method for reproducing an uneven road surface of the present invention includes a measurement step S1 for measuring the shape of an existing uneven road surface, a surface material preparation step S2 for preparing a surface material based on the three-dimensional data obtained by 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, a first three-dimensional data acquisition process S1a is performed in which the shape of the existing uneven road surface is divided into a plurality of blocks, and each of the divided blocks is measured using a three-dimensional laser scanner to obtain first three-dimensional data.

[0037] The 3D laser scanner used here is a measuring device commonly used in this field that can obtain the 3D coordinates of the surface shape by radiating a laser beam radially onto the object to be measured. The laser allows for high-speed, non-contact measurement, resulting in high-density, planar point cloud data. The 3D coordinates can be calculated from the distance to the object to be measured, which is determined from the laser reflection time, and the irradiation angle. The data obtained by the 3D laser scanner can be adjusted to avoid excessive measurement precision, or the obtained data can be corrected, so that fine roughness on the uneven road surface can be ignored and only the shape of the unevenness can be reproduced.

[0038] The division of the shape of an existing rough road surface into multiple blocks can be performed virtually. For example, the shape of an existing rough road surface can be divided into 20 m intervals, 10 m intervals, 5 m intervals, or 3 m intervals in the length direction, and measured with a 3D laser scanner to obtain first 3D data. On the other hand, the shape of the rough road surface in the width direction may or may not be divided and measured. Since the accuracy of the first 3D data decreases at positions far from the 3D laser scanner, dividing the area into the above-mentioned ranges and measuring it can obtain relatively high accuracy from the first 3D data.

[0039] The measurement step S1 further includes a reference point setting step S1b in which at least one measurement reference point is set for each of the divided blocks. The reference point setting step S1b may be performed before the first three-dimensional data acquisition step S1a, and three-dimensional data may be acquired in the first three-dimensional data acquisition step S1a for the set measurement reference point. Alternatively, the reference point setting step S1b may be performed after the first three-dimensional data acquisition step S1a, and a point in the three-dimensional data acquired by a three-dimensional laser scanner may be defined as the measurement reference point.

[0040] Measurement reference points can be set on the boundaries of the divided blocks of the 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 block and the second block will have the same boundary line on the plane defined by the width and top / bottom directions. At least one measurement reference point can be set on this boundary line, and 3D data can be acquired at that measurement reference point using a 3D laser scanner or other method, and the data can be corrected. The corrected data from the measurement reference point on the boundary can then be used as common 3D data for each divided block, thereby reducing the number of measurements required to obtain the second 3D data. Furthermore, even if the shape of an existing uneven road surface is divided into multiple small blocks and measured, 3D data of the existing uneven road surface can be acquired with high accuracy even at the divided surfaces.

[0041] The measurement step S1 further includes a second three-dimensional data acquisition step S1c, in which the three-dimensional shape is measured at at least one set measurement reference point using a method other than the three-dimensional laser scanner to obtain second three-dimensional data. Here, the method other than the three-dimensional laser scanner is not particularly limited as long as it can measure three-dimensional data with high accuracy, and may be, for example, measurement using a leveling instrument, which can perform simple and highly accurate measurements.

[0042] Examples of leveling instruments include level surveying instruments that combine a tripod and a staff to directly observe the difference in elevation between points; theodolite surveying instruments that use a lens to view a target and rotate it horizontally and vertically to measure the horizontal and vertical angles from a reference point; and total station surveying instruments that combine an optical distance meter and a theodolite to simultaneously measure angle and distance.

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

[0044] In the three-dimensional data correction step S1d, the first three-dimensional data that has not been replaced by the second three-dimensional data can be corrected in accordance with the distance from the origin to the measurement reference point.

[0045] For example, for the first block divided lengthwise into 10-meter intervals, the Z-axis value at the origin is (0.000), while the value measured by the 3D laser scanner at a point 10 meters away is (0.102). If the value measured at 10 meters away using a method other than the 3D laser scanner is (0.100), the true value, the error at 10 meters away can be evaluated as (0.002) in absolute terms, or as a percentage error of 2%. If the measurement result measured 5 meters away from the origin using the 3D laser scanner is (0.312), we can assume that the absolute error is half the error at 10 meters, and correct the measurement result at 5 meters away by half of (0.002), or (0.001), to obtain (0.311). Alternatively, we can assume that there is an error of 1%, or half of 2%, and correct the measurement result at 5 meters away to (0.30891). In this way, the first three-dimensional data other than the measurement reference point can be corrected little by little in accordance with the distance from the origin to the measurement reference point.

[0046] When multiple measurement reference points are set in one block, any reasonable method can be used to correct the errors. For example, in a 10-meter-long block, if the Z-axis values ​​of the first three-dimensional data at the origin, 5 meters ahead, and 10 meters ahead are (0.000), (0.312), and (0.102), respectively, and the Z-axis values ​​of the second three-dimensional data are (0.000), (0.310), and (0.101), respectively, the Z-axis values ​​can be corrected by (0.0004) per meter from the origin up to 5 meters ahead, and by (0.0002) per meter from 5 meters ahead to 10 meters ahead. These correction methods can be implemented relatively easily through programming.

[0047] <Surface material production process S2> In the present invention, after the above measurement step, a surface layer material preparation step S2 is carried out in which a surface layer material is prepared based on the obtained three-dimensional data. The method for preparing the surface layer material is not particularly limited as long as it is a method using three-dimensional data, and a 3D printer or the like can be used, but typically includes a mold preparation step S2a in which a mold for reproducing the shape of an existing uneven road surface is prepared using the three-dimensional data, and a surface layer material preparation step S2b in which the mold is used to prepare a surface layer material having an uneven shape.

[0048] In the mold creation step S2a, for example, the three-dimensional data obtained in the measurement step S1 is converted into mold processing data, and then the mold processing data is used to three-dimensionally cut the foamed resin. However, in the mold creation step S2a, the means is not particularly limited as long as it can create a mold having the inverse shape of the rough road surface to be reproduced. For example, a 3D printer may be used to create a mold having the inverse shape of the rough road surface.

[0049] In the mold making step S2a, the mold of the rough road surface to be reproduced can be made by dividing it in the length direction and / or width direction. In this case, the size of the divided length and / or width may be the same as or different from the size of the blocks divided in the measuring step S1.

[0050] In the surface layer material producing step S2b, the surface layer material can be produced by the same steps as those for producing ordinary precast concrete, except that the mold obtained in the mold producing step S2a is used.

[0051] For example, the surface layer material can be produced in the surface layer material production step S2b by placing the mold obtained in the mold production step S2a in a steel or other formwork, pouring concrete into the steel formwork, and curing the concrete. In this case, the mold obtained in the mold production step S2a is placed in the steel formwork so that the surface having the uneven inverted shape faces upward. Furthermore, the steel formwork can be configured to form injection holes in the surface layer material for injecting the grout material described below, and / or to allow connectors to be installed in the surface layer material for connecting the divided surface layer materials.

[0052] In the surface layer material preparation step S2b, the surface layer material for the reproduced uneven road surface can be prepared by dividing it in the length direction and / or width direction. In this case, the size of the divided length and / or width may be the same as or different from the size of the blocks divided in the measurement step S1 and / or the mold divided and prepared in the mold preparation step S2a. For example, a single surface layer material may be prepared by laying multiple divided molds inside a formwork made of steel or the like. The size of the divided surface layer material can be determined taking into account factors such as transportation to the construction site.

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

[0054] 2 is a schematic diagram showing one embodiment of the surface layer installation step S3. In this embodiment, two surface layer materials 21, 22 are installed adjacent to each other in the width direction on the base layer 10. The two surface layer materials 21, 22 can be installed so that two tires of a vehicle run on the surface layer materials 21, 22, respectively.

[0055] In the initial state, the heights of the surface layers 21, 22 on the base layer 10 are not the same, so in the height adjustment step S3a, the heights of the surface layers 21, 22 on the base layer 10 are adjusted by height adjusters 31, 32. Here, two height adjusters 31, 32 are installed between the base layer 10 and each of the two surface layers 21, 22, but the surface layers 21, 22 can also be divided into multiple sections and arranged in the length direction, and multiple height adjusters 31, 32 can also be arranged in the length direction on one surface layer. Note that in this height adjustment step S3a, the heights of the surface layers 21, 22 are adjusted to be the same.

[0056] In the backup material installation step S3b, backup materials 41, 42 are installed on the base layer 10 at widthwise outer positions of the surface layer materials 21, 22. A sponge-like porous resin material can be used as the backup materials 41, 42. The backup materials 41, 42 may be installed at widthwise and lengthwise outer positions of the surface layer materials 21, 22, or the sponge-like backup materials 41, 42 may be installed by being pressed between the surface layer materials 21, 22 and the base layer 10. The backup materials 41, 42 do not need to surround each individual surface layer material 21, 22, but can surround multiple surface layer materials 21, 22 collectively.

[0057] In the grout injection step S3c, grout 50a is injected between the base layer 10 and the surface layer materials 21, 22. Note that during injection, backup materials 41, 42 may be placed at the injection position without being installed, and the backup materials 41, 42 may be installed after injection. Examples of grout include mortar. The injection position of the grout 50a is not particularly limited, and it may be injected through a grout injection hole provided at the end of the surface layer materials 21, 22, or may be injected from between the two surface layer materials 21, 22.

[0058] In this embodiment, the grout material 50a is injected between the two surface layer materials 21, 22, but it is also possible to place backup material between the two surface layer materials 21, 22 in the width and length directions, and inject the grout material 50a at another position, for example, through the grout material injection hole as described above.

[0059] The presence of the backup materials 41, 42 allows the grout material 50a to have a relatively low viscosity, which prevents the grout material 50a injected between the base layer 10 and the surface layer materials 21, 22 from leaking out, and therefore allows the grout material 50a to be injected between the base layer 10 and the surface layer material 22 without any gaps.

[0060] Furthermore, it is preferable that the height adjusters 31, 32 are configured so that even after the grout material 50a has hardened, the heights of the surface layer materials 21, 22 can be finely adjusted. There are no particular limitations on the configuration of such height adjusters 31, 32, but by using jack-type height adjusters 31, 32 and filling the threads of the jack with grease, it is possible to make it easier to adjust the heights of the height adjusters 31, 32 even after the grout material 50a has hardened.

[0061] Finally, the injected grout 50a is hardened in the grout hardening step S3d, thereby obtaining the surface layer materials 21 and 22 fixed to the base layer 10 by the hardened grout 50b, thereby reproducing an uneven road surface. Note that in FIG. 2, the backup materials 41 and 42 are not removed in the grout hardening step S3d, but they may be removed in this grout hardening step S3d. [Explanation of symbols]

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

Claims

1. A method for reproducing an uneven road surface, comprising: a measuring step for measuring the shape of an existing uneven road surface; a surface material fabricating step for fabricating a surface material based on three-dimensional data obtained by the measuring step; and a surface material installing step for installing the surface material on a base layer, The measuring step a first three-dimensional data acquisition step of dividing the shape of the existing uneven road surface into a plurality of blocks and measuring each of the divided blocks with a three-dimensional laser scanner to obtain first three-dimensional data; a reference point setting step of setting a measurement reference point for each of the divided blocks; a second three-dimensional data acquisition step of measuring the three-dimensional shape at the measurement reference point using a method different from that used by the three-dimensional laser scanner to obtain second three-dimensional data; and a three-dimensional data correcting step of correcting the first three-dimensional data using the second three-dimensional data; and The three-dimensional data correction step replacing the data at the measurement reference point among the first three-dimensional data with the second three-dimensional data; and correcting the first three-dimensional data that has not been replaced by the second three-dimensional data in accordance with a distance from an origin to the measurement reference point; A method for recreating an uneven road surface, including:

2. A method for reproducing an uneven road surface, comprising: a measuring step for measuring the shape of an existing uneven road surface; a surface material fabricating step for fabricating a surface material based on three-dimensional data obtained by the measuring step; and a surface material installing step for installing the surface material on a base layer, The measuring step a first three-dimensional data acquisition step of dividing the shape of the existing uneven road surface into a plurality of blocks and measuring each of the divided blocks with a three-dimensional laser scanner to obtain first three-dimensional data; a reference point setting step of setting a measurement reference point for each of the divided blocks; a second three-dimensional data acquisition step of measuring the three-dimensional shape at the measurement reference point using a method different from that used by the three-dimensional laser scanner to obtain second three-dimensional data; and a three-dimensional data correcting step of correcting the first three-dimensional data using the second three-dimensional data; and In the reference point setting step, at least one measurement reference point is provided on a 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. How to recreate an uneven road surface.

3. A method for reproducing an uneven road surface, comprising: a measuring step for measuring the shape of an existing uneven road surface; a surface material fabricating step for fabricating a surface material based on three-dimensional data obtained by the measuring step; and a surface material installing step for installing the surface material on a base layer, The measuring step a first three-dimensional data acquisition step of dividing the shape of the existing uneven road surface into a plurality of blocks and measuring each of the divided blocks with a three-dimensional laser scanner to obtain first three-dimensional data; a reference point setting step of setting a measurement reference point for each of the divided blocks; a second three-dimensional data acquisition step of measuring the three-dimensional shape at the measurement reference point using a method different from that used by the three-dimensional laser scanner to obtain second three-dimensional data; and a three-dimensional data correcting step of correcting the first three-dimensional data using the second three-dimensional data; and The method for reproducing an uneven road surface, wherein the second three-dimensional data is measured by a leveling instrument.

4. A method for reproducing an uneven road surface, comprising: a measuring step for measuring the shape of an existing uneven road surface; a surface material fabricating step for fabricating a surface material based on three-dimensional data obtained by the measuring step; and a surface material installing step for installing the surface material on a base layer, The measuring step a first three-dimensional data acquisition step of dividing the shape of the existing uneven road surface into a plurality of blocks and measuring each of the divided blocks with a three-dimensional laser scanner to obtain first three-dimensional data; a reference point setting step of setting a measurement reference point for each of the divided blocks; a second three-dimensional data acquisition step of measuring the three-dimensional shape at the measurement reference point using a method different from that used by the three-dimensional laser scanner to obtain second three-dimensional data; and a three-dimensional data correcting step of correcting the first three-dimensional data using the second three-dimensional data; and The surface layer material installation step a height adjusting step of adjusting the height by installing a height adjuster between the base layer and the surface layer material; a backup material installation step of installing a backup material at an outer position in the width direction and / or length direction of a plane on which the surface layer material of the base layer is arranged; a grout injection step of injecting a grout material between the base layer and the surface layer material; and a grout hardening step of hardening the injected grout; Includes The method for reproducing an uneven road surface, wherein the height adjuster is configured to be able to adjust the height even after the grout material has hardened.

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

6. The method for reproducing an uneven road surface according to claim 1 , 2 or 4 , wherein the second three-dimensional data is measured by a leveling instrument.

7. The surface layer material installation step a height adjusting step of adjusting the height by installing a height adjuster between the base layer and the surface layer material; a backup material installation step of installing a backup material at an outer position in the width direction and / or length direction of a plane on which the surface layer material of the base layer is arranged; a grout injection step of injecting a grout material between the base layer and the surface layer material; and a grout hardening step of hardening the injected grout; The method for reproducing an uneven road surface according to any one of claims 1 to 3, comprising:

Citation Information

Patent Citations

  • Test course rough passage construction method

    JP1996035202A

  • Transverse scan data correction device, transverse scan data correction program, measurement vehicle, settlement amount measuring device and settlement amount measuring program

    JP2016206131A

  • Reproduction method of existing road shape

    JP2022102046A