Profile data derivation system, profile data derivation method, profile data derivation program, evaluation value calculation system, evaluation value calculation method, evaluation value calculation program, flatness determination system, flatness determination method, and flatness determination program

Abstract

To determine, before performing a pavement construction, flatness of a road surface as of after performing the pavement construction.SOLUTION: A flatness determination system 1 of the present invention includes: a three-dimensional design surface data storage unit 11a that stores three-dimensional design surface data of a road surface to be used when a pavement construction is performed; an operation unit 3 that designates an investigation place on the road surface indicated by the three-dimensional design surface data stored in the three-dimensional design surface data storage unit 11a; a profile data derivation unit 13 that derives profile data corresponding to altitudes at a plurality of positions on the investigation place designated by the operation unit 3 on the basis of the three-dimensional design surface data stored in the three-dimensional design surface data storage unit 11a; an evaluation value calculation unit 14 that calculates an IRI value for evaluating flatness on the basis of the profile data derived in the profile data derivation unit 13; and a flatness evaluation unit 15 that determines flatness of the investigation place on the basis of the IRI value calculated in the evaluation value calculation unit 14.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to, for example, a profile data derivation system, a profile data derivation method, a profile data derivation program, an evaluation value calculation system, an evaluation value calculation method, an evaluation value calculation program, a flatness determination system, a flatness determination method, and a flatness determination program used when determining the flatness of a road surface where paving work is performed.

Background Art

[0002] Since roads become uneven due to the passage of vehicles and the like and need to be repaired, data on the uneven state of the road surface is acquired when performing the repair. Thereafter, 3D design surface data, which is a repair plan screen indicating how to perform the repair according to the uneven state of the road surface, is created, and paving work is performed based on the 3D design surface data.

[0003] Regarding the uneven state of the road surface, the International Roughness Index (IRI) is known as an index representing the unevenness of the road surface in order to evaluate the ride comfort of automobiles (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When creating three-dimensional design surface data during pavement construction, different three-dimensional design surface data will be created if the concepts of how to perform repairs are different. That is, for example, when performing pavement construction at the same repair location, if multiple designers create three-dimensional design surface data respectively, it is common for these three-dimensional design surface data to be different from each other.

[0006] Also, conventionally, when creating three-dimensional design surface data used during pavement construction, whether the thickness of the newly laid layer is equal to or greater than a predetermined thickness has been emphasized. When pavement construction is carried out based on the three-dimensional design surface data created with an emphasis on the thickness management of the newly laid layer as in the prior art, the international roughness index of the road surface after the repair may become a large value, and the flatness of the road surface may become very poor in some cases.

[0007] Furthermore, conventionally, the flatness of the road surface could not be evaluated unless the actual repair was carried out based on the three-dimensional design surface data. Therefore, in some cases, due to poor flatness after the repair construction, the road surface repair may have to be redone.

[0008] The present invention has been made paying attention to such problems, and aims to provide a profile data derivation system, a profile data derivation method, a profile data derivation program, an evaluation value calculation system, an evaluation value calculation method, an evaluation value calculation program, a flatness determination system, a flatness determination method, and a flatness determination program that enable the determination of the flatness of the road surface after repair construction based on three-dimensional design surface data before performing the road surface repair.

Means for Solving the Problems

[0009] The present invention has taken the following means to solve such problems.

[0010] That is, the profile data derivation system according to the present invention includes three-dimensional design surface data storage means for storing the three-dimensional design surface data of the road surface used during pavement construction, and the said three-dimensional design surface dataMemory means An investigation location designating means for designating an investigation location on a road surface represented by three-dimensional design surface data stored in Memory means , and based on the three-dimensional design surface data stored in the three-dimensional design surface data storage means, profile data corresponding to elevations at a plurality of positions on the investigation location designated by the investigation location designating means. It is characterized by comprising a profile data derivation means for deriving.

[0011] A profile data derivation method according to the present invention includes a three-dimensional design surface data acquisition step of acquiring three-dimensional design surface data of a road surface used when performing paving work, and the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step. An investigation location designation step of designating an investigation location on the road surface shown, and based on the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, a plurality of positions on the investigation location designated in the investigation location designation step. It is characterized by comprising a profile data derivation step of deriving profile data corresponding to the elevations at.

[0012] A profile data derivation program according to the present invention, when read into a computer, causes the computer to receive three-dimensional design surface data of a road surface used when performing paving work, and the three-dimensional design surface data received by the three-dimensional design surface data receiving means. Designation information receiving means for receiving designation information for designating an investigation location on the road surface shown, and based on the three-dimensional design surface data received by the three-dimensional design surface data receiving means, the designation information received by the designation information receiving means. It is characterized by functioning as a profile data derivation means for deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated by.

[0013] Accordingly, in the profile data derivation system, profile data derivation method, and profile data derivation program according to the present invention, profile data of an investigation location can be derived based on three-dimensional design surface data of a road surface used when performing paving work. Therefore, before performing paving work on a road surface, it is possible to determine the flatness of the road surface when paving work is performed based on the three-dimensional design surface data.

[0014] The evaluation value calculation system according to the present invention includes three-dimensional design surface data storage means for storing three-dimensional design surface data of a road surface used when performing paving work, investigation location designation means for designating an investigation location on the road surface indicated by the three-dimensional design surface data stored in the three-dimensional design surface data storage means, profile data derivation means for deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated by the investigation location designation means based on the three-dimensional design surface data stored in the three-dimensional design surface data storage means, and evaluation value calculation means for calculating an evaluation value for evaluating flatness based on the profile data derived by the profile data derivation means.

[0015] The evaluation value calculation method according to the present invention includes a three-dimensional design surface data acquisition step of acquiring three-dimensional design surface data of a road surface used when performing paving work, an investigation location designation step of designating an investigation location on the road surface indicated by the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, a profile data derivation step of deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated by the investigation location designation step based on the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, and an evaluation value calculation step of calculating an evaluation value for evaluating flatness based on the profile data derived in the profile data derivation step.

[0016] When the evaluation value calculation program according to the present invention is read into a computer, the computer is caused to function as three-dimensional design surface data receiving means for receiving three-dimensional design surface data of a road surface used when performing paving work, designation information receiving means for receiving designation information for designating an investigation location on the road surface indicated by the three-dimensional design surface data received by the three-dimensional design surface data receiving means, profile data deriving means for deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated by the designation information received by the designation information receiving means based on the three-dimensional design surface data received by the three-dimensional design surface data receiving means, and evaluation value calculation means for calculating an evaluation value for evaluating flatness based on the profile data derived by the profile data deriving means.

[0017] Accordingly, in the evaluation value calculation system, evaluation value calculation method, and evaluation value calculation program according to the present invention, an evaluation value for determining the flatness of an investigation location can be calculated based on the three-dimensional design surface data of the road surface used when performing paving work. Therefore, before performing paving work on the road surface, the flatness of the road surface when the paving work is performed based on the three-dimensional design surface data can be determined.

[0018] The flatness determination system according to the present invention includes three-dimensional design surface data storage means for storing three-dimensional design surface data of a road surface used when performing paving work, investigation location designation means for designating an investigation location on the road surface indicated by the three-dimensional design surface data stored in the three-dimensional design surface data storage means, profile data deriving means for deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated by the investigation location designation means based on the three-dimensional design surface data stored in the three-dimensional design surface data storage means, evaluation value calculation means for calculating an evaluation value for evaluating flatness based on the profile data derived by the profile data deriving means, and flatness evaluation means for determining the flatness of the investigation location based on the evaluation value calculated by the evaluation value calculation means.

[0019] The flatness determination method according to the present invention includes a three-dimensional design surface data acquisition step of acquiring three-dimensional design surface data of a road surface used when performing paving work, an investigation location designation step of designating an investigation location on the road surface indicated by the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, a profile data derivation step of deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated in the investigation location designation step based on the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, an evaluation value calculation step of calculating an evaluation value for evaluating flatness based on the profile data derived in the profile data derivation step, and a flatness determination step of determining the flatness of the investigation location based on the evaluation value calculated in the evaluation value calculation step.

[0020] The flatness determination program according to the present invention, when read into a computer, causes the computer to function as three-dimensional design surface data receiving means for receiving three-dimensional design surface data of a road surface used when performing paving work, designation information receiving means for receiving designation information for designating an investigation location on the road surface indicated by the three-dimensional design surface data received by the three-dimensional design surface data receiving means, profile data derivation means for deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated by the designation information received by the designation information receiving means based on the three-dimensional design surface data received by the three-dimensional design surface data receiving means, evaluation value calculation means for calculating an evaluation value for evaluating flatness based on the profile data derived by the profile data derivation means, and flatness determination means for evaluating the flatness of the investigation location based on the evaluation value calculated by the evaluation value calculation means.

[0021] Accordingly, in the flatness determination system, flatness determination method, and flatness determination program according to the present invention, based on the three-dimensional design surface data of the road surface used when performing paving work, it is possible to determine the flatness of the road surface when the paving work is performed before the paving work is actually carried out.

Effects of the Invention

[0022] As described above, according to the present invention, before performing the pavement construction on the road surface, it is possible to determine the flatness of the road surface when the pavement construction is performed based on the three-dimensional design surface data.

Brief Description of the Drawings

[0023]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Embodiments for Carrying Out the Invention

[0024] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0025] The flatness determination system 1 according to an embodiment of the present invention includes a flatness determination device 2, an operation unit 3 connected to the flatness determination device 2, and a display screen 5. The flatness determination device 2 has an input device 2a and is configured to be able to input data from the outside via the input device 2a.

[0026] As shown in FIG. 1, the flatness determination device 2 has a control unit 10. The control unit 10 is composed of, for example, a microcomputer, and includes a CPU, a ROM storing a program for controlling the operation of the flatness determination device 2, and a RAM for temporarily storing data and the like used when executing the above program. That is, the control unit 10 is mainly composed of a normal microcomputer including a CPU, a memory, and an interface, and performs predetermined calculations and processes according to the flatness determination program stored in the memory, and determines flatness based on the data captured from the capture device 2a under the cooperation with peripheral hardware.

[0027] The control unit 10 of the flatness determination device 2 includes a three-dimensional design surface data reception unit 11 including a three-dimensional design surface data storage unit 11a, a designation information reception unit 12, a profile data derivation unit 13, an evaluation value calculation unit 14, and a flatness determination unit 15. In addition, the operation unit 3 and the display screen 5 are connected to the control unit 10 of the flatness determination device 2.

[0028] The three-dimensional design surface data reception unit 11 receives the three-dimensional design surface data supplied from the capture device 2a. The three-dimensional design surface data received by the three-dimensional design surface data reception unit 11 is stored in the three-dimensional design surface data storage unit 11a.

[0029] The three-dimensional design surface data is the three-dimensional design surface data of the road surface used when performing paving work, and is three-dimensional data showing the plan screen of the road surface on which paving work is to be performed. That is, the three-dimensional design surface data includes data corresponding to the latitude, longitude, and elevation (height) of each point on the plan screen of the road surface on which paving work is to be performed.

[0030] When creating the three-dimensional design surface data of the road surface used during the paving work, first, data on the uneven state of the road surface at the start of repair work is acquired by a 3D scanner 2 or the like. The 3D scanner 2 irradiates laser light to acquire point cloud data (a set of elevations with planar position coordinates) in which each point on the road surface and its surroundings is three-dimensionally coordinated.

[0031] When data on the uneven state of the road surface at the start of repair work is acquired, three-dimensional design surface data showing a repair plan screen for improving the uneven state of the road surface is created.

[0032] The repair plan screen includes longitudinal and cross-sectional plans. After the longitudinal plan along the longitudinal direction of the road is carried out, the cross-sectional plan along the cross-sectional direction at multiple locations on the road is carried out, and the repair plan screen used during repair is acquired. Therefore, the repair plan screen includes plan screen data showing the longitudinal plan screen and plan screen data showing a plurality of cross-sectional plan screens.

[0033] The longitudinal plan includes a plan for the elevation of each point on the line along the longitudinal direction of the road at the central part of the road. For example, FIG. 2 shows a longitudinal plan screen for the elevation of each point on the line along the central part of the road. In FIG. 2, the repair location that requires a repair plan is between the non-repaired location on the left side and the non-repaired location on the right side. In the repair location of FIG. 2, the change in elevation based on the point cloud data is illustrated, and the longitudinal plan screen is also illustrated.

[0034] The longitudinal plan screen in FIG. 2 is obtained by connecting the elevations that are planned considering the flatness of the road and other factors for each position on the line along the central part of the road. The positions on the line along the central part of the road are, for example, positions at intervals of 10 m or 20 m.

[0035] In the longitudinal plan, after planning the elevation at each position on the line along the center of the road, a cross-sectional plan is carried out. The cross-sectional plan is a plan for the elevation of each point on the line along the cross-sectional direction of the road at each position on the line along the center of the road. For example, FIG. 3 shows a cross-sectional plan screen for the elevation of each point on the line along the cross-sectional direction of the road at point a in FIG. 2. In FIG. 3, the repair location that requires a repair plan is between the left end and the right end of the road. In the repair location, the change in elevation based on the point cloud data is illustrated, and the cross-sectional plan screen is also illustrated. In FIG. 3, the slope of the road is exaggerated for easy understanding.

[0036] The cross-sectional plan screen is obtained by planning for each position on the line along the center of the road shown in FIG. 2, taking into account the slope of the inclined plane that slopes downward from the elevation at the center of the road towards both ends of the road. For example, when performing a cross-sectional plan of a road, it is generally designed to slope downward at a predetermined slope from the center of the road towards the ends of the road.

[0037] For example, in the cross-sectional plan screen of FIG. 3, from the elevation at the center of the road at point a in the longitudinal plan screen of FIG. 2, along the inclined plane that slopes downward at a predetermined slope towards both ends of the road, the elevation drops to point a1, and then, along the connecting surface connecting point a1 to the left end and the right end of the road, the elevation drops to the left end and the right end of the road. Therefore, when repaired based on the cross-sectional plan screen, the surface layer of the asphalt pavement formed at the repair location and the concrete parts at the left end and the right end of the road are connected without a step. Note that the cross-sectional plan screen of FIG. 3 is an example of a cross-sectional plan screen, and the method of cross-sectional planning is not limited thereto. Therefore, the cross-sectional plan screen may be designed, for example, such that inclined planes sloping downward at a plurality of different slopes from the center of the road towards the ends of the road are connected.

[0038] By connecting the cross-sectional plan screens at each position on the line along the center of the road obtained as described above in the longitudinal direction, a repair plan screen (3D design surface data) for repairing the road surface is acquired.

[0039] On the repair plan screen, it is possible to convert it into a three-dimensional TIN model (irregular triangular network), which is a collection of triangular planes connected by each point designed by the longitudinal and transverse plans, and derive data corresponding to the latitude, longitude, and elevation of each point on the road surface. Even if each point in the survey area is not obtained by the longitudinal and transverse plans, it is possible to derive data corresponding to the latitude, longitude, and elevation of each point.

[0040] Specifically, in FIG. 4, point A 1 point, point A 2 point and point A 3 If each of the points of point is obtained by the longitudinal and transverse plans, it is converted into a three-dimensional TIN model, which is a collection of triangular planes connected by point A 1 point, point A 2 point and point A 3 as vertices. Points a 1 point and a 2 point are inside the triangular plane, and assuming that points a 1 point, point A 2 point and point A 3 point are on the plane passing through point, data corresponding to the elevation at points a 1 point and a 2 point is derived.

[0041] Hereinafter, a specific example of the method for creating three-dimensional design surface data will be described by taking the method for creating three-dimensional plan screen data showing the repair plan screen around the manhole as an example.

[0042] FIG. 5(a) is a plan view of a two-lane road at the time of repair start, and a manhole is provided on the road in the upper lane. FIG. 5(b) is an enlarged view of the periphery of the manhole at the time of repair start. In FIG. 5(b), a part of the data on the uneven state of the road surface around the manhole is shown. In this embodiment, on the line along the transverse direction, the elevations of the two plane positions N1 and N2 located outside the road of the manhole are n 1 meters, n 2 meters, and the elevations of the two plane positions N3 and N4 located inside the road of the manhole are n 3meter, n 4 The case where it is in meters will be described.

[0043] FIG. 6 is a schematic diagram showing the elevation of the manhole peripheral portion, and shows the elevation of each point shown in FIG. 5(b). In the present embodiment, the elevation at the planar position N1 is t 1 cm higher than the elevation T1 of the manhole, the elevation at the planar position N2 is t 2 cm lower than the elevation T1 of the manhole, the elevation at the planar position N3 is t 3 cm higher than the elevation T1 of the manhole, and the elevation at the planar position N4 is t 4 cm higher than the elevation T1 of the manhole will be described.

[0044] Thus, when the elevations at the planar positions N1 to N4 in the manhole peripheral portion are lower than the elevation T1 of the manhole, three-dimensional design surface data is created so that the elevation difference is reduced. FIGS. 7(a) to 7(c) show the design method of the manhole peripheral portion included in the three-dimensional design surface data.

[0045] For example, in the three-dimensional design surface data A shown in FIG. 7(a), without changing the elevation T1 of the manhole, a repair plan screen is created so that the elevations at the planar positions N1 to N4 are slightly higher than the elevation T1 of the manhole. For example, in the three-dimensional design surface data A, the gradient between N1 and N2 and the gradient between N3 and N4 are the same constant gradient, and if N2 and N3 are connected, the same constant gradient is obtained from N1 to N4.

[0046] In the three-dimensional design surface data B shown in FIG. 7(b), without changing the elevation T1 of the manhole, a repair plan screen is created so that the elevations at the planar positions N1 to N4 are slightly lower than the elevation T1 of the manhole. For example, in the three-dimensional design surface data A, the gradient between N1 and N2 and the gradient between N3 and N4 are the same constant gradient, and if N2 and N3 are connected, the same constant gradient is obtained from N1 to N4.

[0047] In the three-dimensional design surface data C shown in FIG. 7(c), a repair plan screen is created such that the elevation T1 of the manhole remains unchanged, the elevations of the planar positions N1 to N2 are slightly lower than the elevation T1 of the manhole, and the elevations of the planar positions N3 to N4 are slightly lower than the elevation T1 of the manhole.

[0048] As described above, when repair plan screens for eliminating unevenness on the road surface around the manhole are created based on different repair methods as shown in FIGS. 7(a) to 7(c), it can be seen that the repair plan screens are different from each other. In the case of construction over a long span such as a road, it is desirable for the gradient of the road in the repair plan screen to be the same constant gradient in all regions in the longitudinal or transverse direction in order to ensure flatness. However, in the case of having accessories such as a manhole, since it is locally adjusted to the elevation of the accessory, it may have a distorted shape as shown in FIGS. 7(a) and 7(b).

[0049] In FIGS. 7(a) to 7(c), the design method for the area around the manhole is shown. Similarly, for areas other than the area around the manhole, when created based on different repair methods, different repair plan screens will result.

[0050] The specified information reception unit 12 receives and stores the specified information about the linear survey location on the road surface of the road specified by the operation of the operation unit 3. Specifically, in the three-dimensional design surface data displayed on the display screen 5, when the start point (starting point), the end point, and the path between the start point and the end point are specified by the operation of the operation unit 3, the specified information about the linear survey location is stored.

[0051] In the present embodiment, in order to survey the flatness of the road surface, as shown in FIG. 8, a linear survey location A1 along the position a1 100 cm from the center of the lane to the shoulder side, or a linear survey location A2 along the outside wheel passing position a2 in the lane of the road is specified. For example, the international roughness index can be calculated if there is a longitudinal profile created based on the data corresponding to the latitude, longitude, and elevation of each point at one linear survey location.

[0052] In this way, when the designated information reception unit 12 receives the designation of the linear survey location A1, as the designated information, it receives the starting point 1, the ending point 1, and the designated information about the linear path between the starting point 1 and the ending point 1. Also, when the designated information reception unit 12 receives the designation of the linear survey location A2, as the designated information, it receives the starting point 2, the ending point 2, and the designated information about the linear path between the starting point 2 and the ending point 2.

[0053] Note that the method of designating the linear survey location is arbitrary. For example, the latitude and longitude of the starting point and the latitude and longitude of the ending point may be specified numerically, and the path therebetween may be specified as a straight line. Also, on the display screen 5 where the three-dimensional design surface data is displayed, the starting point and the ending point may be point-specified, and the path therebetween may be specified as a straight line.

[0054] The profile data derivation unit 13 derives data corresponding to the elevations at a plurality of positions on the survey location included in the three-dimensional design surface data, and creates profile data of the road surface, that is, a longitudinal profile (showing the change in the height of the road surface). In the present embodiment, the longitudinal profile of the road surface includes data corresponding to the latitude, longitude, and elevation of the starting point, data corresponding to the latitude, longitude, and elevation of the ending point, and data corresponding to the latitude, longitude, and elevation at equal intervals in the path between the starting point and the ending point.

[0055] In the present embodiment, the profile data derivation unit 13 extracts data at intervals of 25 cm or less (in this embodiment, at equal intervals of 25 cm) in the path between the starting point and the ending point, and creates a longitudinal profile of the road surface. The interval for extracting data in the path between the starting point and the ending point can be arbitrarily set.

[0056] Specifically, the profile data derivation unit 13 derives the latitude and longitude for each point at a predetermined interval on the path between the starting point and the ending point based on the latitude and longitude of the starting point and the latitude and longitude of the ending point, and also derives the elevation for each of those points. That is, the profile data derived by the profile data derivation unit 13 includes data on the latitude, longitude, and elevation for each point at a predetermined interval on the survey location. The profile data shows the cross-section (change in the height of the road surface) along the longitudinal direction of the road.

[0057] As shown in FIG. 9, the longitudinal profile created by the profile data derivation unit 13 includes data corresponding to the latitude, longitude, and elevation at equal intervals at the linear survey location. In FIG. 9, a, b, and c are numerical values indicating latitude, longitude, and elevation, respectively. In FIG. 9, data NO.1 corresponds to the latitude, longitude, and elevation at the starting point, data NO.n corresponds to the latitude, longitude, and elevation at the ending point, and data NO.2 to NO.n - 1 corresponds to the latitude, longitude, and elevation at equal intervals on the path between the starting point and the ending point.

[0058] The evaluation value calculation unit 14 calculates an evaluation value for evaluating the flatness based on the profile data derived by the profile data derivation unit 13. In this embodiment, as the evaluation value for evaluating the flatness, the International Roughness Index (IRI) that represents the unevenness of the road surface as an index for evaluating the ride comfort of an automobile is used.

[0059] The calculation of the IRI value in the evaluation value calculation unit 14 is generally processed by a computer using a calculation program with the profile data of the road surface of the road. A typical example of this calculation program is software called Proval. For example, if there is a longitudinal profile created based on the data corresponding to the latitude, longitude, and height of each point at a linear survey location, the IRI value can be calculated.

[0060] The flatness determination unit 15 determines the flatness of the surveyed location based on the IRI value calculated by the evaluation value calculation unit 14. The flatness determination unit 14 determines that the smaller the IRI value, the better the flatness. In this embodiment, the flatness determination unit 14 determines that the flatness is good when the IRI value is 3 or less.

[0061] A specific example of the evaluation in the flatness determination unit 15 is as follows. When the IRI value is from 0 (completely flat) to about 3 mm / m: Damage level: Small (desirable management level), equivalent to that of newly constructed pavement. The unevenness of the road surface is not noticeable. (On a good asphalt pavement surface, the IRI value is about 1.4 - 2.4 mm / m)

[0062] When the IRI value is from 3 to about 8 mm / m: Damage level: Medium (repair required), in the case of old pavement where deterioration has progressed considerably.

[0063] When the IRI value is about 8 mm / m or more: Damage level: Large (urgent repair required), in the case of old pavement where deterioration has progressed and distinct damages occur continuously.

[0064] As described above, it was found that when repair plan screens for eliminating the unevenness of the road surface around the manhole are created based on different repair methods, different repair plan screens are obtained. Therefore, even when the same surveyed location is specified as shown in FIGS. 10(a) to 10(c) in the three - dimensional design surface data A, B, and C, the profile data on that surveyed location is different for each of the three - dimensional design surface data A, B, and C, and the IRI value calculated from that profile data is also different for each of the three - dimensional design surface data A, B, and C.

[0065] In the three - dimensional design surface data A, B, and C shown in FIGS. 10(a) to 10(c), the IRI values calculated from the profile data on the surveyed location are respectively C A 、C B 、C CIf so, the flatness of the surveyed location can be determined based on the magnitude of the IRI value.

[0066] For example, if the IRI values of the three-dimensional design surface data A, B, and C are all C A <C B <C C If so, when pavement construction is carried out based on each of the three-dimensional design surface data A, B, and C, it is considered that the flatness of the surveyed location for the pavement construction is best for the three-dimensional design surface data A and worst for the three-dimensional design surface data C. That is, for example, if the IRI value of the three-dimensional design surface data is 2.994, when pavement construction is carried out based on that three-dimensional design surface data, the flatness of the surveyed location will be good. On the other hand, if the IRI value of the three-dimensional design surface data is 4.232, when pavement construction is carried out based on that three-dimensional design surface data, the flatness of the surveyed location will be poor, and despite having carried out the pavement construction, the flatness of the road surface will be such that repair is necessary.

[0067] In this way, by creating a plurality of repair plan screens for eliminating road surface unevenness around the manhole and calculating the IRI value based on the profile data of the same surveyed location in the repair plan screen (three-dimensional design surface data), at the stage of creating the repair plan screen, it is possible to evaluate the flatness of the surveyed location when pavement construction is carried out based on that repair plan screen.

[0068] That is, by comparing the IRI values of the surveyed locations in the repair plan screens for each case, such as whether it is better to align the road surface with the height of the manhole without changing the height of the manhole, or whether it is better to align the road surface with the height of the manhole after changing the height of the manhole up and down, it is possible to evaluate which repair plan screen is better before carrying out the pavement construction of the road surface.

[0069] Note that in the three-dimensional design surface data A, B, and C shown in FIGS. 10(a) to 10(c), the magnitudes of the IRI values of one surveyed location are compared, but in the three-dimensional design surface data A, B, and C, the magnitudes of the IRI values of a plurality of surveyed locations may also be compared.

[0070] As described above, when evaluating the three-dimensional design surface data, if the thickness of the newly laid layer is emphasized as in the prior art, the flatness of the road surface after paving work may deteriorate. On the other hand, by emphasizing the flatness of the road surface after paving work, the flatness of the road surface after paving work can be surely made good.

[0071] When the flatness of the road surface after paving work is poor, when the vehicle bounces and rebounds, the paving will be damaged. Even if there is a small wear and a dent is formed, when the vehicle bounces, the dent will become larger, so there is a problem that the life of the road surface will be shortened. On the other hand, when the flatness of the road surface after paving work is good, the vehicle will not bounce, so the life of the road surface can be extended.

[0072] When the flatness of the road surface after paving work is poor, the vehicle will run on a bumpy road, and regardless of day or night, a large noise will be generated from the vehicle, causing noise damage to the neighboring residents. In particular, in the case of a truck, the noise generation is remarkable, and as the flatness deteriorates, the goods on the loading platform will make a large rattling noise. On the other hand, when the flatness of the road surface after paving work is good, noise reduction is possible.

[0073] A vehicle will have better fuel consumption performance when running on a flat road with less frictional resistance. Therefore, when the flatness of the road surface after paving work is poor, the fuel consumption performance of the vehicle will deteriorate, resulting in more fuel consumption and more exhaust gas emissions, which will contribute to environmental deterioration and global warming around the road. On the other hand, when the flatness of the road surface after paving work is good, it is possible to prevent the deterioration of the fuel consumption of the vehicle.

[0074] The flatness determination method in the flatness determination system 1 of the present embodiment will be described with reference to FIG. 11.

[0075] In step S1, for the area where paving work is to be performed, separately created three-dimensional design surface data (repair plan screen) is supplied to the flatness determination device 2. The three-dimensional design surface data reception unit 11 receives the three-dimensional design surface data and stores the data in the three-dimensional design surface data storage unit 11a.

[0076] In step S2, when the operation unit 5b is operated, a linear survey location is specified on the road surface of the three-dimensional design surface data. The designation information reception unit 12 receives the designation information about the survey location designated based on the operation of the operation unit 3 and stores the designation information.

[0077] In step S3, the profile data derivation unit 14 derives profile data on the survey location based on the three-dimensional design surface data.

[0078] In step S4, the evaluation value calculation unit 14 calculates the IRI value for the survey location based on the profile data.

[0079] In step S5, the flatness determination unit 15 determines the flatness of the survey location based on the IRI value.

[0080] The flatness determination system 1 of the present embodiment includes a three-dimensional design surface data storage unit 11a that stores three-dimensional design surface data of a road surface used when performing paving work, an operation unit 3 that designates a survey location on the road surface indicated by the three-dimensional design surface data stored in the three-dimensional design surface data storage unit 11a, a profile data derivation unit 13 that derives profile data corresponding to the elevations at a plurality of positions on the survey location designated by the operation unit 3 based on the three-dimensional design surface data stored in the three-dimensional design surface data storage unit 11a, an evaluation value calculation unit 14 that calculates an IRI value for evaluating flatness based on the profile data derived by the profile data derivation unit 13, and a flatness evaluation unit 15 that determines the flatness of the survey location based on the IRI value calculated by the evaluation value calculation unit 14.

[0081] The flatness determination method of this embodiment includes a three-dimensional design surface data acquisition step of acquiring three-dimensional design surface data of a road surface used when performing paving work, an investigation location designation step of designating an investigation location on the road surface indicated by the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, a profile data derivation step of deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated in the investigation location designation step based on the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, an evaluation value calculation step of calculating an IRI value for evaluating flatness based on the profile data derived in the profile data derivation step, and a flatness determination step of determining the flatness of the investigation location based on the IRI value calculated in the evaluation value calculation step.

[0082] When the flatness determination program of this embodiment is read into a computer, the computer is caused to include a three-dimensional design surface data reception unit 11 that receives three-dimensional design surface data of a road surface used when performing paving work, a designation information reception unit 12 that receives designation information for designating an investigation location on the road surface indicated by the three-dimensional design surface data received by the three-dimensional design surface data reception unit 11, a profile data derivation unit 13 that derives profile data corresponding to elevations at a plurality of positions on the investigation location designated by the designation information received by the designation information reception unit 12 based on the three-dimensional design surface data received by the three-dimensional design surface data reception unit 11, an evaluation value calculation unit 14 that calculates an IRI value for evaluating flatness based on the profile data derived by the profile data derivation unit 13, and a flatness determination unit 15 that evaluates the flatness of the investigation location based on the IRI value calculated by the evaluation value calculation unit 14.

[0083] Thereby, in the flatness determination system 1, the flatness determination method, and the flatness determination program of this embodiment, based on the three-dimensional design surface data of the road surface used when performing paving work, it is possible to determine the flatness of the road surface when the paving work is performed before the paving work is actually carried out.

[0084] Although the embodiments of the present invention have been described above, the specific configuration of each part is not limited to the above-described embodiments, and various modifications are possible without departing from the spirit of the present invention.

[0085] In the above embodiment, a flatness determination method for performing acquisition of three-dimensional design surface data (S1), designation of an investigation location (S2), derivation of profile data (S3), calculation of an evaluation value (S4), and determination of flatness (S5) has been described, but it is not limited thereto.

[0086] As a modification example of the above embodiment, there is an evaluation value calculation method for performing acquisition of three-dimensional design surface data (S1), designation of an investigation location (S2), derivation of profile data (S3), and calculation of an evaluation value (S4) to calculate an evaluation value. Note that the same applies to the evaluation value calculation system and the evaluation value calculation program according to this modification example.

[0087] The evaluation value calculation system 1 of this modification example includes a three-dimensional design surface data storage unit 11a that stores three-dimensional design surface data of a road surface used when performing pavement construction, an operation unit 3 that designates an investigation location on the road surface indicated by the three-dimensional design surface data stored in the three-dimensional design surface data storage unit 11a, a profile data derivation unit 13 that derives profile data corresponding to the elevations at a plurality of positions on the investigation location designated by the operation unit 3 based on the three-dimensional design surface data stored in the three-dimensional design surface data storage unit 11a, and an evaluation value calculation unit 14 that calculates an IRI value for evaluating flatness based on the profile data derived by the profile data derivation unit 13.

[0088] The evaluation value calculation method of this modified example includes a three-dimensional design surface data acquisition step of acquiring three-dimensional design surface data of a road surface used when performing pavement construction, an investigation location designation step of designating an investigation location on the road surface indicated by the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, a profile data derivation step of deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated in the investigation location designation step based on the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, and an evaluation value calculation step of calculating an IRI value for evaluating flatness based on the profile data derived in the profile data derivation step.

[0089] When the evaluation value calculation program of this modified example is read into a computer, the computer functions as a three-dimensional design surface data reception unit 11 that receives three-dimensional design surface data of a road surface used when performing pavement construction, a designation information reception unit 12 that receives designation information for designating an investigation location on the road surface indicated by the three-dimensional design surface data received by the three-dimensional design surface data reception unit 11, a profile data derivation unit 13 that derives profile data corresponding to elevations at a plurality of positions on the investigation location designated by the designation information received by the designation information reception unit 12 based on the three-dimensional design surface data received by the three-dimensional design surface data reception unit 11, and an evaluation value calculation unit 14 that calculates an IRI value for evaluating flatness based on the profile data derived by the profile data derivation unit 13.

[0090] From this, in the evaluation value calculation system, evaluation value calculation method, and evaluation value calculation program of this modified example, an evaluation value for determining the flatness of an investigation location can be calculated based on the three-dimensional design surface data of the road surface used when performing pavement construction. Therefore, before performing pavement construction on a road surface, the flatness of the road surface when the pavement construction is performed based on the three-dimensional design surface data can be determined.

[0091] As a modification example of the above-described embodiment, there is a profile data derivation method for deriving profile data by performing acquisition of three-dimensional design surface data (S1), designation of an investigation location (S2), and derivation of profile data (S3). Note that the same applies to the profile data derivation system and the profile data derivation program according to this modification example.

[0092] The profile data derivation system 1 of this modification example includes a three-dimensional design surface data storage unit 11a that stores three-dimensional design surface data of a road surface used when performing paving work, an operation unit 3 that designates an investigation location on the road surface indicated by the three-dimensional design surface data stored in the three-dimensional design surface data storage unit 11a, and a profile data derivation unit 13 that derives profile data corresponding to elevations at a plurality of positions on the investigation location designated by the operation unit 3 based on the three-dimensional design surface data stored in the three-dimensional design surface data storage unit 11a.

[0093] The profile data derivation method of this modification example includes a three-dimensional design surface data acquisition step of acquiring three-dimensional design surface data of a road surface used when performing paving work, an investigation location designation step of designating an investigation location on the road surface indicated by the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, and a profile data derivation step of deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated in the investigation location designation step based on the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step.

[0094] When the profile data derivation program of this modification example is read into a computer, the computer is caused to function as a three-dimensional design surface data reception unit 11 that receives three-dimensional design surface data of a road surface used when performing a paving work, a designation information reception unit 12 that receives designation information for designating an investigation location on the road surface indicated by the three-dimensional design surface data received by the three-dimensional design surface data reception unit 11, and a profile data derivation unit 13 that derives profile data corresponding to the elevations at a plurality of positions on the investigation location designated by the designation information received by the designation information reception unit 12 based on the three-dimensional design surface data received by the three-dimensional design surface data reception unit 11.

[0095] Accordingly, in the profile data derivation system, profile data derivation method, and profile data derivation program according to this modification example, profile data of an investigation location can be derived based on the three-dimensional design surface data of a road surface used when performing a paving work. Therefore, before performing the paving work on the road surface, it is possible to determine the flatness of the road surface when the paving work is performed based on the three-dimensional design surface data.

[0096] In the above embodiment, the international roughness index (IRI value) is used as an evaluation value for evaluating flatness, but it is not limited thereto. For example, as an evaluation value for evaluating flatness, a 3mσ value (3-meter sigma value) or other flatness σ values may be used.

[0097] In the above embodiment, the international roughness index is calculated based on the profile data of the road surface at a position at a predetermined distance from the center of the lane to the shoulder side or at the position where the outer wheel passes in the lane of the road. However, based on the longitudinal profile of the road surface at a position at a predetermined distance from the center of the lane to the shoulder side, at the position where the outer wheel passes in the lane of the road, and at the position where the inner wheel passes in the lane of the road, a half-car roughness index (HRI) or an average value of IRI (MRI) of the left and right wheel running positions may be calculated.

[0098] In the above-described embodiment, regarding a plurality of three-dimensional design surface data (repair plan screens) for eliminating unevenness of the road surface around a manhole, before performing the road surface paving work, by comparing the IRI values of the survey locations in the plurality of three-dimensional design surface data, the case of determining which of the plurality of three-dimensional design surface data has good flatness has been described, but it is not limited thereto. For example, in the paving work at an intersection where the main line and the branch line intersect, it is also possible to evaluate the flatness of the attachment portion between the main line and the branch line before performing the road surface paving work. By creating a plurality of three-dimensional design surface data with different connection methods between the main line and the branch line, it is possible to evaluate how the flatness varies depending on the connection method or which connection method is better before performing the road surface paving work.

[0099] In the above-described embodiment, profile data is created by deriving data corresponding to the latitude, longitude, and elevation at equal intervals in a linear survey location, but the data corresponding to the latitude, longitude, and elevation at a plurality of positions in the linear survey location is not limited to the data at equal intervals.

[0100] Also, in the above-described embodiment, profile data is used with software called Proval for example, but as analysis software for analyzing profile data, software other than the software called Proval can be used.

[0101] In the above-described embodiment, it is converted into a three-dimensional TIN model (irregular triangular network) which is an aggregate of triangular planes, and data corresponding to the latitude, longitude, and height of each point in a linear survey location is derived. However, as shown in FIG. 12, proximity regions are respectively formed on both sides of the linear survey location, and based on the point group data within the proximity regions, data corresponding to the latitude, longitude, and height of each point in the linear survey location may be derived. In FIG. 12, when points such as point A 1 point, point A 2 point, and point A 3 are obtained by the longitudinal and transverse plan, points a 1 point and a 2The point may select point cloud data (one or more pieces of point cloud data) near a point on a linear survey location from among the point cloud data within the proximity area, and based on the point cloud data, derive data corresponding to the latitude, longitude, and height of each point on the linear survey location.

[0102] For example, a on a linear survey location 1 The data corresponding to the height of the point is A 1 point and A 2 derived based on the average value of the heights of the points, and a 2 The data corresponding to the height of the point is A 1 point and A 3 derived based on the average value of the heights of the points. The method of deriving data corresponding to the height of a point on a linear survey location based on the point cloud data near the point on the linear survey location selected from among the point cloud data within the proximity area is not limited thereto. The width of the proximity area on both sides of the linear survey location can be arbitrarily set.

Explanation of Signs

[0103] 1 Flatness determination system 3 Operation unit 11 3D design surface data reception unit (3D design surface data reception means) 11a 3D design surface data storage unit (3D design surface data storage means) 12 Specified information reception unit 13 Profile data derivation unit (profile data derivation means) 14 Evaluation value calculation unit (evaluation value calculation means) 15 Flatness evaluation unit (flatness evaluation means)

Claims

1. Three-dimensional design surface data storage means for storing three-dimensional design surface data of a road surface used when performing a paving work, Investigation location designating means for designating an investigation location on the road surface indicated by the three-dimensional design surface data stored in the three-dimensional design surface data storage means, A profile data derivation system comprising profile data derivation means for deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated by the investigation location designating means based on the three-dimensional design surface data stored in the three-dimensional design surface data storage means.

2. A three-dimensional design surface data acquisition step of acquiring three-dimensional design surface data of a road surface used when performing a paving work, An investigation location designating step of designating an investigation location on the road surface indicated by the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, A profile data derivation method comprising a profile data derivation step of deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated by the investigation location designating step based on the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step.

3. When read by a computer, causing the computer to function as: Three-dimensional design surface data reception means for receiving three-dimensional design surface data of a road surface used when performing a paving work, Designation information reception means for receiving designation information for designating an investigation location on the road surface indicated by the three-dimensional design surface data received by the three-dimensional design surface data reception means, A profile data derivation program characterized by causing the computer to function as profile data derivation means for deriving profile data corresponding to elevations at a plurality of positions on the investigation location designated by the designation information received by the designation information reception means based on the three-dimensional design surface data received by the three-dimensional design surface data reception means.

4. Three-dimensional design surface data storage means for storing three-dimensional design surface data of a road surface used when performing a paving work, Investigation location designating means for designating an investigation location on the road surface indicated by the three-dimensional design surface data stored in the three-dimensional design surface data storage means, Based on the three-dimensional design surface data stored in the three-dimensional design surface data storage means, profile data corresponding to the elevations at a plurality of positions on the inspection location specified by the inspection location specifying means is derived by profile data derivation means; An evaluation value calculation system characterized by comprising evaluation value calculation means for calculating an evaluation value for evaluating flatness based on the profile data derived by the profile data derivation means. **Claim 5** A three-dimensional design surface data acquisition step of acquiring three-dimensional design surface data of a road surface used when performing paving work; An inspection location specifying step of specifying an inspection location on the road surface indicated by the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step; Based on the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step, a profile data derivation step of deriving profile data corresponding to the elevations at a plurality of positions on the inspection location specified by the inspection location specifying step; An evaluation value calculation method characterized by comprising an evaluation value calculation step of calculating an evaluation value for evaluating flatness based on the profile data derived in the profile data derivation step. **Claim 6** When read into a computer, the computer is caused to function as three-dimensional design surface data reception means for receiving three-dimensional design surface data of a road surface used when performing paving work; designation information reception means for receiving designation information for designating an inspection location on the road surface indicated by the three-dimensional design surface data received by the three-dimensional design surface data reception means; profile data derivation means for deriving profile data corresponding to the elevations at a plurality of positions on the inspection location designated by the designation information received by the designation information reception means, based on the three-dimensional design surface data received by the three-dimensional design surface data reception means; An evaluation value calculation program characterized by causing the computer to function as evaluation value calculation means for calculating an evaluation value for evaluating flatness based on the profile data derived by the profile data derivation means. **Claim 7** Three-dimensional design surface data storage means for storing three-dimensional design surface data of a road surface used when performing paving work; Inspection location specifying means for specifying an inspection location on the road surface indicated by the three-dimensional design surface data stored in the three-dimensional design surface data storage means; Profile data derivation means for deriving profile data corresponding to the elevations at a plurality of positions on the inspection location designated by the inspection location designation means based on the three-dimensional design surface data stored in the three-dimensional design surface data storage means; Evaluation value calculation means for calculating an evaluation value for evaluating flatness based on the profile data derived by the profile data derivation means; A flatness determination system comprising flatness evaluation means for determining the flatness of an inspection location based on the evaluation value calculated by the evaluation value calculation means.

8. A three-dimensional design surface data acquisition step of acquiring three-dimensional design surface data of a road surface used when performing paving work; An inspection location designation step of designating an inspection location on the road surface indicated by the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step; A profile data derivation step of deriving profile data corresponding to the elevations at a plurality of positions on the inspection location designated in the inspection location designation step based on the three-dimensional design surface data acquired in the three-dimensional design surface data acquisition step; An evaluation value calculation step of calculating an evaluation value for evaluating flatness based on the profile data derived in the profile data derivation step; A flatness determination method comprising a flatness evaluation step of determining the flatness of an inspection location based on the evaluation value calculated in the evaluation value calculation step.

9. When read into a computer, the computer is caused to Three-dimensional design surface data reception means for receiving three-dimensional design surface data of a road surface used when performing paving work; Designation information reception means for receiving designation information for designating an inspection location on the road surface indicated by the three-dimensional design surface data received by the three-dimensional design surface data reception means; Profile data derivation means for deriving profile data corresponding to the elevations at a plurality of positions on the inspection location designated by the designation information received by the designation information reception means based on the three-dimensional design surface data received by the three-dimensional design surface data reception means; Evaluation value calculation means for calculating an evaluation value for evaluating flatness based on the profile data derived by the profile data derivation means; A flatness determination program comprising flatness determination means for evaluating the flatness of an inspection location based on the evaluation value calculated by the evaluation value calculation means.

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