JP2020077322A - Road management system, road management method and road management program - Google Patents

Abstract

To provide a road management capable of extracting a road segment whose degree of necessity for repair exceeds a threshold after taking into consideration the priority of road management and vulnerability to the disaster for each area when disaster occurs.SOLUTION: A road management system 10 includes: a storage device 12 for storing measurement information 30 on the road surface quality and a plurality of pieces of information 40 indicating the priority of the road management or the degree of the vulnerability to the disaster for each area when the disaster occurs; and an arithmetic part 11 which, based on one or more pieces of information 40 selected from among the plurality of pieces of information 40 and measurement information 30, extracts a road segment whose degree of necessity for repair exceeds a threshold from among roads whose priority is equal to or higher than the threshold or whose degree of vulnerability is equal to or higher than the threshold.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a road management system, a road management method, and a road management program.

  Road maintenance is changing from the time of new construction to the time of maintenance and repair, and road managers such as local governments manage roads efficiently within a limited road maintenance budget and are safe and secure for road users. It is required to provide a comfortable road environment. Under such circumstances, each local government needs to match the ledgers of many road structures one by one to determine the priority order for repairs and the like, and the work load becomes excessive. As a means for reducing such work load, for example, as described in Patent Document 1, there is a management system for determining the priority of repair according to the importance and the degree of damage of a road structure. Are known.

JP, 2005-182646, A

  However, the management system described in Patent Document 1 is mainly for determining the priority order of repairs due to aging deterioration of road structures, and is a disaster (for example, earthquake disaster, tsunami disaster, landslide disaster, heavy rainfall). It does not determine the priority of repairing road structures in consideration of the occurrence of disasters or heavy snowfall disasters. From the perspective of disaster countermeasures, it is desirable to determine the priority of repairs, taking into consideration the priority of road management when a disaster occurs or the vulnerability of each region to disasters.

  Therefore, the present invention provides a road management system capable of extracting a road section whose need for repair exceeds a threshold value in consideration of the priority of road management at the time of disaster occurrence or the vulnerability of each area to disaster. The challenge is to propose.

  In order to solve the above-mentioned problems, the road management system according to the present invention has a plurality of measurement information of road surface properties, a plurality of road management priorities at the time of occurrence of a disaster, or a degree of vulnerability of each region to the disaster. A storage device that stores information, and one or more pieces of information selected from a plurality of pieces of information and the measurement information are used to repair roads whose priority is equal to or higher than a threshold value or whose degree of vulnerability is equal to or higher than a threshold value. An arithmetic unit for extracting a road section whose necessity of exceeds a threshold value is provided.

  According to the present invention, it is possible to extract road road sections whose repair necessity exceeds a threshold value in consideration of the priority of road management when a disaster occurs or the vulnerability of each region to the disaster.

It is explanatory drawing which shows the hardware constitutions of the road management system concerning embodiment of this invention. It is a figure which shows an example of the measurement information of the road surface condition concerning embodiment of this invention. It is a figure which shows an example of the information which shows the priority of road management at the time of disaster occurrence concerning the embodiment of this invention. It is explanatory drawing of the extraction process of the road area which concerns on embodiment of this invention. It is a figure which shows an example of the information which shows the vulnerability for every area with respect to the disaster which concerns on embodiment of this invention. It is explanatory drawing of the extraction process of the road area which concerns on embodiment of this invention. It is a flow chart which shows an example of the flow of processing of the road management method concerning this embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, the same reference numerals denote the same constituent elements, and duplicate description will be omitted.
FIG. 1 is an explanatory diagram showing a hardware configuration of a road management system 10 according to the embodiment of the present invention. The road management system 10 analyzes the degree of deterioration of the road surface based on the road surface property measurement information 30 measured by the vehicle 50. Since the degree of deterioration of the road surface may differ for each part of the road, the road may be divided into a plurality of road sections in advance for convenience of measurement and analysis of the road surface property. The road surface property is a road surface profile indicating uneven displacement of the road surface. From this road surface profile, for example, the presence or absence of cracks and ruts in each road section or the degree thereof can be determined, and the flatness can be calculated. ..

  The road management system 10 is a computer system including a computing device 11, a storage device 12, a communication device 13, and a display device 14 as hardware resources. The arithmetic unit 11 includes a processor and a main memory. The storage device 12 stores a road management program 20 for causing the road management system 10 to execute the road management method according to the present embodiment, and a plurality of pieces of information 40 used for executing the road management program 20. The plurality of pieces of information 40 indicate either the priority of road management at the time of occurrence of a disaster or the degree of vulnerability of each region to the disaster, the details of which will be described later. The road management program 20 is read into the main memory and is interpreted and executed by the processor. Details of the road management method will be described later.

  The storage device 12 is a computer-readable recording medium such as a disk medium (for example, a magnetic recording medium or a magneto-optical recording medium) or a semiconductor memory (for example, a volatile memory or a nonvolatile memory). Such a recording medium can also be called, for example, a non-transitory recording medium. The communication device 13 is, for example, a communication module compatible with a wireless communication standard such as LTE (Long Term Evolution). The display device 14 is, for example, a flat panel display such as a liquid crystal display.

  The vehicle 50 may be a private vehicle or a business vehicle (for example, a commercial vehicle or a regular operation vehicle). A business vehicle means, for example, a business vehicle such as a taxi, a truck, a delivery vehicle for a courier service, or a mail collection / delivery vehicle whose travel route or travel time is not predetermined. , A business vehicle such as a route bus in which the travel route and the travel time are predetermined.

  The vehicle 50 includes, for example, an electronic control unit (ECU) 51, a communication device 52, and a measuring device 60. The electronic control unit 51 is, for example, a microcomputer including a processor, a memory device, and an input / output interface. The communication device 52 is, for example, a communication module compatible with a wireless communication standard such as LTE. The vehicle 50 and the road management system 10 are connected via a communication network 70. The communication network 70 is, for example, a wireless network such as a mobile communication network.

  The measuring device 60 is configured to measure the degree of deterioration of the road surface, and includes a photographing device 61, a laser scanner 62, an acceleration measuring device 63, and a position measuring device 64. For example, cracks, ruts, and flatness are known as road surface properties that serve as an index for evaluating the deterioration state of the road surface.

  The image capturing device 61 is, for example, a digital camera such as an image sensor that captures a still image of a road surface. By analyzing the still image of the road surface, it is possible to determine the presence or absence of cracks and the extent thereof. The imaging device 61 outputs the information of the still image of the road surface as the measurement information 30 for analyzing cracks on the road surface.

  The laser scanner 62 irradiates the road surface on which the vehicle 50 is traveling with laser light, and receives the reflected light from the road surface to detect the distance between the laser scanner 62 and the road surface (that is, from the road surface). Height). By performing this height measurement along the width direction of the road, it is possible to determine the presence or absence of rut (unevenness of the road surface in the width direction) and its depth. The laser scanner 62 outputs the information indicating the result of the height measurement of the road surface as the measurement information 30 for analyzing the rut on the road surface.

  The acceleration measuring device 63 measures the acceleration on the spring and the acceleration on the spring for each of the left side and the right side of the vehicle 50, for example. The flatness of the road surface can be calculated from the difference between the acceleration above the spring and the acceleration below the spring. The acceleration measuring device 63 outputs the information indicating the measurement result of the acceleration as the measurement information 30 for analyzing the flatness of the road surface. The spring means an elastic member that constitutes a suspension device of the vehicle 50.

  The position measuring device 64 is, for example, a GPS (Global Positioning System) device. When the electronic control unit 51 measures the road surface property measurement information 30 (measurement information 30 for analyzing cracks, ruts, and flatness) of each road section measured by the measurement device 60, The processing for transmitting from the communication device 52 to the road management system 10 through the communication network 70 is performed in association with the position information and the time stamp (date and time) of the vehicle 50. The road management system 10 stores the measurement information 30 received from the vehicle 50 in the storage device 12.

 The measurement device 60 may include a gyro sensor that detects the angular acceleration of the vehicle 50 and a microphone that detects the running sound of the vehicle 50. Road surface properties (for example, cracks, ruts, flatness, etc.) can be evaluated from the angular acceleration of the vehicle 50 and the running sound.

  The computing device 11 includes one or more pieces of information 40 and measurement information 30 selected from a plurality of pieces of information 40 indicating either the priority of road management at the time of occurrence of a disaster or the degree of vulnerability of each area to the disaster. On the basis of the above, a road section whose need for repair exceeds the threshold value is extracted from roads whose priority level of road management at the time of occurrence of a disaster is equal to or higher than the threshold value or roads whose degree of vulnerability to disaster is equal to or higher than the threshold value. The computing device 11 selects a road whose priority of road management at the time of a disaster is a threshold value or more or a road whose degree of vulnerability to a disaster is a threshold value or more based on the information 40, and further repairs in the selected roads. The road section whose necessity degree exceeds the threshold is extracted based on the measurement information 30. The computing device 11 calculates, for example, the degree of deterioration of the road section based on the measurement information 30, and when the calculation result exceeds the allowable value, the need for repair of the road section exceeds the threshold value. You may judge.

Next, details of the road management method according to the present embodiment will be described with reference to FIGS. 2 to 6.
FIG. 2 is an explanatory diagram showing an example of the road surface property measurement information 30. In FIG. 2, symbols L1 to L5 indicate roads (for example, highways, national roads, prefectural roads, municipal roads, etc.), and the measurement information 30 indicates road surface properties of the respective roads L1 to L5. Since the measurement information 30 is associated with the position information on the road, it can be plotted in the map format as shown in FIG.

  FIG. 3 is an explanatory diagram showing an example of information 40 indicating the priority of road management when a disaster occurs. The information 40 indicating the priority of road management when a disaster occurs may be, for example, information indicating the category classification of roads in the road disaster prevention network. In this category classification, the main roads connecting cities and living bases (for example, schools, hospitals, etc.) are classified into category A, and the roads connecting cities and isolated villages are classified into category B, which are non-substitutional. The main road is classified into category C. In the order of categories A, B, and C, the priority of road management at the time of disaster occurrence is high, and therefore the necessity of repair is high. In the example shown in FIG. 3, the road L3 is classified into the category A, the roads L2, L4, and L5 are classified into the category B, and the road L1 is classified into the category C. Of the categories A, B, and C, a category for which a priority exceeding a threshold is set may be the category A, for example.

  The arithmetic unit 11 superimposes the measurement information 30 shown in FIG. 2 and the information 40 shown in FIG. 3 so that, as shown in FIG. 4, the necessity of repair is a threshold value in the road L3 classified into the category A. The road section 81 that exceeds is extracted. The arithmetic unit 11 may set the repair priority of the extracted road section 81 higher than the repair priority of other road sections. By superimposing the information 40 indicating the category classification of roads in the road disaster prevention network and the measurement information 30 on the road surface property, among the roads classified into category A, the road section whose need for repair exceeds the threshold is set by each local government. You can analyze how much you have.

  As the information 40 indicating the priority of road management when a disaster occurs, for example, information indicating the traffic volume of each road section (for example, the average traffic volume per unit time) may be used. The greater the traffic volume, the higher the priority of road management in the event of a disaster, and therefore the higher the need for repairs. The arithmetic device 11 may extract, for example, a road section in which the degree of need for repair exceeds a threshold value among roads whose traffic volume exceeds the threshold value.

  FIG. 5: is explanatory drawing which shows an example of the information 40 which shows the degree of vulnerability for every area with respect to a disaster. The information 40 indicating the degree of vulnerability of each area to a disaster may be, for example, ground information (for example, ground strength) of each area. The lower the soil strength, the higher the degree of vulnerability to disasters and the lower the robustness. Reference numeral 41 indicates an area where the ground strength is lower than a certain strength. In this example, an area where the ground strength is lower than a certain strength is regarded as an area where the degree of vulnerability is a threshold value or more.

  The arithmetic unit 11 superimposes the measurement information 30 shown in FIG. 2 and the information 40 shown in FIG. 5 on the road L4 located in the area 41 where the ground strength is below a certain strength, as shown in FIG. A road section 82 whose repair requirement exceeds the threshold is extracted. The arithmetic unit 11 may set the repair priority of the extracted road section 82 higher than the repair priority of other road sections.

  In addition, as the information 40 indicating the degree of vulnerability of each area to a disaster, for example, the burial status (for example, burial position, burial depth, or burial time) of each lifeline such as a water pipe or gas pipe The information shown may be used. Areas with densely embedded lifelines are more vulnerable to disasters than areas without densely embedded lifelines. The computing device 11 may extract, for example, a road section whose repair requirement exceeds the threshold value among roads located in areas where the overdensity of the lifeline such as a water pipe or a gas pipe exceeds the threshold value. In this example, a region where the overdensity of a lifeline such as a water pipe or a gas pipe exceeds a threshold value is regarded as a region where the degree of vulnerability is equal to or higher than the threshold value. Areas where the lifelines are buried are more vulnerable to disasters than areas where the lifelines are buried. The computing device 11 may extract, for example, a road section whose repair requirement exceeds the threshold value from roads located in areas where the lifeline burying period of a water pipe or a gas pipe exceeds the threshold period. In this example, a region in which the lifeline burying period of a water pipe or a gas pipe exceeds the threshold period is regarded as a region whose degree of vulnerability is equal to or higher than the threshold.

  As the information 40 indicating the degree of vulnerability of each region to a disaster, for example, weather information of each region (for example, temperature, precipitation amount, snowfall amount, etc.) may be used. Areas with severe weather conditions such as temperature, precipitation, and snowfall (areas where temperature, precipitation, or snowfall exceeds a threshold) are areas where weather conditions are normal (temperature, precipitation, and snowfall are thresholds). More vulnerable to disasters. The computing device 11 may extract a road section whose repair necessity degree exceeds a threshold value from roads located in areas where the weather conditions are severe. In this example, a region where the weather condition is severe is regarded as a region where the degree of vulnerability is a threshold value or more.

  In the above description, any one of the plurality of information 40 indicating the priority of road management at the time of disaster occurrence or the degree of vulnerability to each area against the disaster, and the measurement information 30 of the road surface property. Based on the above, an example of extracting a road section whose need for repair exceeds a threshold value was shown, but multiple information indicating either the priority of road management at the time of disaster occurrence or the degree of vulnerability to each disaster area A road section whose need for repair exceeds a threshold value may be extracted based on two or more pieces of information 40 selected from 40 and the road surface property measurement information 30. The computing device 11 may select two or more pieces of information 40 from the plurality of pieces of information 40 according to the purpose. For example, when considering the vulnerability of the road to the collapse of the water pipe caused by the heavy rain, the arithmetic unit 11 uses the information 40 indicating the burial status of the water pipe and the information 40 indicating the vulnerability of each region to the disaster. Even when selecting a combination with local weather information and extracting road sections where the need for repair exceeds the threshold among roads located in areas where the water pipe density exceeds the threshold and the precipitation exceeds the threshold Good.

FIG. 7 is a flowchart showing an example of the processing flow of the road management method according to this embodiment.
In step 701, the road management system 10 selects one or more pieces of information 40 from a plurality of pieces of information 40 indicating either the priority of road management at the time of occurrence of a disaster or the degree of vulnerability of each area to the disaster. To do.
In step 702, the road management system 10 determines, based on the one or more pieces of information 40 selected in step 701 and the road surface property measurement information 30, that the priority of road management at the time of a disaster is equal to or higher than a threshold value or the area for the disaster. A road section whose need for repair exceeds the threshold is extracted from roads whose degree of vulnerability is above the threshold.
In step 703, the road management system 10 displays the road section extracted in step 702 on the display device 14 in a map format.
The road management system 10 may set the repair priority of the road section extracted in step 702 higher than the repair priority of other road sections.

  According to the embodiment of the present invention, a road section in which the degree of necessity of repair exceeds the threshold value from roads in which the priority of road management at the time of disaster occurrence is equal to or higher than the threshold value or the degree of vulnerability of each region to the disaster value is higher than the threshold value By extracting, it is possible to extract road road sections whose repair need exceeds a threshold value, taking into consideration the priority of road management when a disaster occurs or the vulnerability of each region to the disaster.

  By using the information indicating the category of roads in the road disaster prevention network as the information indicating the priority of road management at the time of disaster, the priority of road management at the time of disaster is high from the viewpoint of the category classification of the road disaster prevention network. It is possible to extract a road section in the road whose need for repair exceeds a threshold value.

  Vulnerable to disaster from the viewpoint of the burial status of water pipes or gas pipes by using the information showing the burial status of water pipes or gas pipes in each area as the information showing the vulnerability of each area to the disaster It is possible to extract road road sections whose repair needs exceed a threshold value from among various roads.

  By using the information indicating the traffic volume of each road section as the information indicating the priority of road management in the event of a disaster, repairs can be performed on roads with a high priority of road management in the event of a disaster from the viewpoint of traffic volume. It is possible to extract a road section whose necessity exceeds a threshold value.

  By using the meteorological information of each region as information indicating the vulnerability of each region to disasters, road road sections whose repair need exceeds the threshold value are extracted from roads that are vulnerable to disasters from the viewpoint of the weather environment. can do.

  By using the ground information of each area as the information indicating the vulnerability of each area to the disaster, the road road sections whose repair necessity exceeds the threshold value are extracted from the roads that are vulnerable to the disaster from the viewpoint of the ground environment. can do.

  The road management system 10 functions as a means for executing each of the steps 701 to 703 of the road management method described above, and such means is not limited to the cooperation of the hardware resources of the road management system 10 and the road management program 20. It does not have to be realized, and may be realized by using a dedicated hardware resource of the road management system 10 (for example, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like). The road management program 20 may include a software module that executes steps 701 to 703 of the road management method described above.

  The embodiments described above are for facilitating the understanding of the present invention and are not for limiting the interpretation of the present invention. The present invention can be modified / improved without departing from the spirit thereof, and the present invention also includes equivalents thereof. That is, the embodiment appropriately modified by a person skilled in the art is also included in the scope of the invention as long as the characteristics of the invention are provided. Further, each element included in the embodiment can be combined as long as technically possible, and a combination of these elements is also included in the scope of the present invention as long as it includes the features of the present invention.

10 ... Road management system 11 ... Arithmetic device 12 ... Storage device 13 ... Communication device 14 ... Display device 20 ... Road management program 30 ... Measurement information 40 ... Information 50 ... Vehicle 51 ... Electronic control unit 60 ... Measuring device 61 ... Imaging device 62 ... laser scanner 63 ... acceleration measuring device 64 ... position measuring device 70 ... communication network 81 ... road section 82 ... road section

Claims (8)

A storage device that stores measurement information of the road surface condition and a plurality of information indicating either the priority of road management at the time of disaster occurrence or the degree of vulnerability of each region to the disaster,
Based on one or more pieces of information selected from the plurality of pieces of information and the measurement information, the degree of necessity of repair is a threshold value from roads with the priority being equal to or higher than a threshold value or the degree of vulnerability being equal to or higher than a threshold value. An arithmetic unit for extracting road sections exceeding
Road management system with. The road management system according to claim 1,
The information indicating the priority of road management when a disaster occurs includes the information indicating the category classification of roads in the road disaster prevention network. The road management system according to claim 1 or 2,
The road management system, wherein the information indicating the vulnerability of each area to the disaster includes information indicating the burial status of each water pipe or gas pipe in each area. The road management system according to any one of claims 1 to 3,
The information indicating the priority of road management when a disaster occurs includes a information indicating traffic volume of each road section. The road management system according to any one of claims 1 to 4,
The information indicating the vulnerability of each area to the disaster includes weather information of each area. The road management system according to any one of claims 1 to 5,
The information indicating the vulnerability of each area to the disaster includes a ground management information of each area. Computer system
A step of selecting one or more pieces of information from a plurality of pieces of information indicating either the priority of road management at the time of occurrence of a disaster or the degree of vulnerability of each area to the disaster;
Based on the selected one or more pieces of information and the road surface property measurement information, a road section in which the degree of need for repair exceeds a threshold value from roads whose priority is equal to or higher than a threshold value or whose degree of vulnerability is a threshold value or higher. To extract
Road management method to carry out.   A road management program for causing a computer system to execute the road management method according to claim 7.