Pavement maintenance decision-making method, pavement maintenance decision-making device and electronic equipment

Abstract

The invention is suitable for the technical field of road maintenance, and provides a pavement maintenance decision-making method, a pavement maintenance decision-making device and electronic equipment. The method comprises the following steps: acquiring a first maintenance type of at least one maintenance unit in a road network in a first time period, wherein the starting time of the first time period is later than the current time; the road network comprises at least one maintenance unit; obtaining a pavement disease condition of the maintenance unit in the first time period, wherein the pavement disease condition comprises a pavement type and a damage degree of the pavement disease; and determining a maintenance recommendation scheme of the road network in the first time period based on the first maintenance type of the at least one maintenance unit in the first time period and the maintenance quality constraint condition of the road network. According to the invention, the road network can be maintained more accurately, and a better maintenance effect is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of highway maintenance, and in particular relates to a road maintenance decision-making method, a road maintenance decision-making device, and an electronic device. Background Art

[0002] As highway mileage and kilometer ratings increase, maintaining and preserving this vast network of highway assets and ensuring a high level of service has become a major challenge for highway management departments across the country. Due to the rapid expansion of the road network, the task of highway maintenance remains daunting, and the technical and financial resources required to maintain current road conditions are fragile. Traditional maintenance decisions often rely on individual engineering experience and subjective judgment, making it difficult to fully utilize maintenance resources and achieve optimal results. Summary of the Invention

[0003] The embodiments of the present application provide a pavement maintenance decision-making method, a pavement maintenance decision-making device, and an electronic device, which can perform more accurate maintenance on the road network and achieve better maintenance results.

[0004] In a first aspect, an embodiment of the present application provides a pavement maintenance decision-making method, comprising:

[0005] Obtaining a first maintenance type of at least one maintenance unit in a road network in a first time period, where a start time of the first time period is later than a current time; the road network includes at least one maintenance unit;

[0006] Obtaining a pavement damage condition of the maintenance unit during the first time period, wherein the pavement damage condition includes a pavement type and a degree of damage of the pavement damage;

[0007] determining, based on the first maintenance type of the at least one maintenance unit in the first time period and the maintenance quality constraint of the road network, a maintenance recommendation plan for the road network in the first time period, the maintenance recommendation plan including recommending a first target maintenance unit to be maintained using the first maintenance type in the first time period and / or recommending a second target maintenance unit not to be maintained in the first time period;

[0008] Among them, the maintenance quality constraint conditions include pavement disease constraint conditions, and the pavement disease constraint conditions are used to constrain the damage level of the pavement disease of the maintenance unit in the first time period to be lower than the damage level threshold of the corresponding pavement disease type under the corresponding pavement type; if the damage level of the pavement disease of the maintenance unit in the first time period is not lower than the damage level threshold of the corresponding pavement disease type under the corresponding pavement type, it is recommended to use the first maintenance type to maintain the maintenance unit in the first time period.

[0009] In an embodiment of the present application, by obtaining the first maintenance type of at least one maintenance unit in the road network in the first time period and the pavement type and damage degree of the pavement disease of the maintenance unit in the first time period, it is possible to determine a maintenance recommendation plan for the road network in the first time period based on the first maintenance type of at least one maintenance unit in the first time period and the pavement disease constraint conditions in the maintenance quality constraint conditions of the road network. The maintenance recommendation plan includes recommending a first target maintenance unit to be maintained using the first maintenance type in the first time period, and / or recommending a second target maintenance unit not to be maintained in the first time period. When determining the recommended maintenance plan for the road network in the first time period, this plan takes into account the first maintenance type of at least one maintenance unit in the road network in the first time period and the pavement disease constraint conditions of the road network. The pavement disease constraint conditions are used to constrain the damage level of the pavement disease of the maintenance unit in the first time period to be lower than the damage level threshold of the corresponding pavement disease type under the corresponding pavement type. When the damage level of the pavement disease of the maintenance unit in the first time period is not lower than the damage level threshold of the corresponding pavement disease type under the corresponding pavement type, it is recommended to use the first maintenance type to maintain the maintenance unit in the first time period, so that the maintained maintenance unit meets the pavement disease constraint conditions of the road network, and can ensure that the final maintenance recommendation plan is more accurate and more in line with the actual situation. Based on the maintenance recommendation plan, the road network can be maintained more accurately and achieve better maintenance results.

[0010] In a second aspect, an embodiment of the present application provides a road maintenance decision-making device, comprising:

[0011] a type acquisition module, configured to acquire a first maintenance type of at least one maintenance unit in a road network in a first time period, wherein a start time of the first time period is later than a current time; the road network includes at least one maintenance unit;

[0012] a disease acquisition module, configured to acquire a pavement disease condition of the maintenance unit during the first time period, wherein the pavement disease condition includes a pavement type and a degree of damage of the pavement disease;

[0013] a plan determination module, configured to determine a recommended maintenance plan for the road network during the first time period based on the first maintenance type of the at least one maintenance unit during the first time period and a maintenance quality constraint of the road network, the recommended maintenance plan including recommending a first target maintenance unit to be maintained using the first maintenance type during the first time period and / or recommending a second target maintenance unit not to be maintained during the first time period;

[0014] Among them, the maintenance quality constraint conditions include pavement disease constraint conditions, and the pavement disease constraint conditions are used to constrain the damage level of the pavement disease of the maintenance unit in the first time period to be lower than the damage level threshold of the corresponding pavement disease type under the corresponding pavement type; if the damage level of the pavement disease of the maintenance unit in the first time period is not lower than the damage level threshold of the corresponding pavement disease type under the corresponding pavement type, it is recommended to use the first maintenance type to maintain the maintenance unit in the first time period.

[0015] In a third aspect, an embodiment of the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the electronic device implements a method as described in any one of the above-mentioned first aspects.

[0016] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a computer, the method described in the first aspect above is implemented.

[0017] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when run, enables the method described in any one of the above-mentioned first aspects to be executed.

[0018] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is a flow chart of a pavement maintenance decision-making method provided by an embodiment of the present application;

[0021] Figure 2 This is another flowchart of the pavement maintenance decision-making method provided in an embodiment of the present application;

[0022] Figure 3 This is an example diagram of technical status indicator constraint management provided by an embodiment of the present application;

[0023] Figure 4 This is another flowchart of the pavement maintenance decision-making method provided in an embodiment of the present application;

[0024] Figure 5 This is a schematic diagram of the structure of the road maintenance decision-making device provided in an embodiment of the present application;

[0025] Figure 6 It is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0027] The pavement maintenance decision-making method provided in the embodiment of the present application can be applied to electronic devices such as mobile phones, tablet computers, laptop computers, ultra-mobile personal computers (UMPCs), netbooks, and personal digital assistants (PDAs). The embodiment of the present application does not impose any restrictions on the specific type of electronic device.

[0028] See also Figure 1 , Figure 1 The following is a flow chart of a road maintenance decision-making method provided in an embodiment of the present application. As an example and not a limitation, the method includes the following steps:

[0029] Step 101: Obtain a first maintenance type of at least one maintenance unit in a road network in a first time period.

[0030] The start time of the first time period is later than the current time. The road network includes at least one maintenance unit.

[0031] The road network may refer to the sum of all routes requiring maintenance decisions. The road network may include at least one route, and a route may be considered a maintenance unit, or each route may be divided into two or more maintenance units.

[0032] In step 101, at least one maintenance unit in the road network may be all maintenance units of all routes, or may be some maintenance units of all maintenance units of all routes (for example, these partial maintenance units may be selected according to scenario requirements or may be randomly selected), and this application does not limit this.

[0033] It should be understood that the present application does not limit the road surface type of each route in the road network. For example, the road surface type of any route in the road network can be asphalt road surface or cement concrete road surface.

[0034] The aforementioned maintenance units can be based on assessment units. Assessment units can be obtained from the most recent year's highway technical condition assessment data, and an assessment unit typically refers to a road section with a length of 1,000 meters. To achieve better maintenance results, individual routes can be divided based on the highway technical condition assessment data, taking into account changes in factors such as road surface type, traffic volume, road width, and maintenance management units. Of course, it is understood that individual routes can also be divided based on actual needs, and this application does not limit the method of dividing individual routes.

[0035] The first maintenance type may refer to the type of maintenance project performed when maintaining the maintenance unit.

[0036] Maintenance projects can be divided into multiple maintenance types according to the maintenance purpose and maintenance object, that is, there are many different types of maintenance projects. As an example and not a limitation, the maintenance types of maintenance projects can include preventive maintenance and repair maintenance. According to the degree of repair, repair maintenance usually includes major repairs, medium repairs and minor repairs. Therefore, maintenance plans can also be divided into four maintenance types: preventive maintenance, repair maintenance-minor repairs, repair maintenance-medium repairs, and repair maintenance-major repairs. Of course, it is understandable that maintenance projects can also be divided into multiple maintenance types in other ways, and this application does not limit this.

[0037] One maintenance unit corresponds to one first maintenance type. That is, for any maintenance unit, one maintenance type is selected from a plurality of different maintenance types as the first maintenance type of the maintenance unit.

[0038] In one possible implementation, pavement disease constraint management can be performed on the maintenance unit based on the damage degree of the pavement disease of the maintenance unit, and the first maintenance type of the maintenance unit can be determined, thereby realizing the maintenance demand analysis of the maintenance unit. On this basis, the above step 101 may include:

[0039] For any maintenance unit, determining the pavement type, the damage degree of the pavement disease, and the pavement disease type of the maintenance unit in a second time period, where the end time of the second time period is earlier than the start time of the first time period;

[0040] Based on the pavement type and the pavement damage type to which the maintenance unit belongs in the second time period, a corresponding relationship between the damage degree corresponding to the pavement damage type and the maintenance type under the pavement type is determined.

[0041] Based on the damage degree of the pavement disease of the maintenance unit in the second time period, a first maintenance type of the maintenance unit in the first time period is determined from the corresponding relationship.

[0042] It should be understood that this application does not limit the time units of the first and second time periods, and can be, for example, years, months, etc. The durations of the first and second time periods are also not limited. As an example and not a limitation, if the first time period is one year in the future, then the second time period is the most recent year; if the first time period is two years in the future, then the second time period is one year in the future.

[0043] When determining the first maintenance type based on pavement defect constraint management, the pavement types are categorized into asphalt and cement concrete pavements, and the pavement defect types and damage levels are classified. Based on actual maintenance conditions, the corresponding maintenance types for asphalt pavement defects are shown in Table 1, and for cement concrete pavement defects are shown in Table 2. For any maintenance unit, the first maintenance type for that maintenance unit can be determined from Table 1 or Table 2 based on the pavement type, pavement defect type, and damage level of the maintenance unit during the second time period.

[0044] Table 1

[0045]

[0046]

[0047] Table 2

[0048]

[0049]

[0050] It can be seen from Tables 1 and 2 that the pavement disease types of maintenance units are usually different under different pavement types. Under different pavement disease types of the same pavement type, the maintenance types corresponding to the same damage degree may also be different. Therefore, for different pavement types and different pavement disease types, the corresponding relationships between the damage degrees and maintenance types can be pre-set and stored respectively. That is, multiple corresponding relationships between damage degrees and maintenance types can be pre-stored. On this basis, based on the pavement type and pavement disease type of the maintenance unit in the second time period, a corresponding relationship that matches the pavement type and pavement disease type of the maintenance unit in the second time period can be found from the multiple corresponding relationships. Based on the damage degree of the pavement disease of the maintenance unit in the second time period, the maintenance type corresponding to the damage degree can be determined from the corresponding relationship. This maintenance type is the first maintenance type of the maintenance unit in the first time period.

[0051] Since the pavement technical condition of the maintenance unit affects the maintenance type of the maintenance unit, after determining the first maintenance type, the maintenance unit can be managed by technical condition index constraints to achieve the update of the first maintenance type. Figure 2 The steps shown implement an update of the first maintenance type.

[0052] Step 201: Determine a second maintenance type of the maintenance unit in the first time period based on the pavement technical condition index of the maintenance unit in the second time period.

[0053] When determining the second maintenance type based on technical condition indicator constraint management, it is necessary to first determine the maintenance threshold. This threshold refers to the critical value of the pavement technical condition indicator or sub-indicator that triggers maintenance work. The maintenance threshold can be determined based on a comprehensive analysis of the highway's technical grade and the importance of the indicator. Highway technical grades are categorized into expressways, first-class highways, second-class highways, third-class highways, and fourth-class highways based on their mission, function, and traffic volume. For third- and fourth-class highways with less safety impact, the maintenance threshold can be appropriately lowered.

[0054] The above-mentioned pavement technical condition indicators are related to the pavement type. According to the pavement type to which the maintenance unit belongs, at least one of the indices such as the pavement maintenance quality index (PQI), the pavement damage condition index (PCI), the pavement riding quality index (RQI), and the pavement rutting depth index (RDI) can be used as the pavement technical condition indicator.

[0055] like Figure 3 The example diagram of technical condition index constraint management is shown. The maintenance type in this example diagram is determined by PCI, RQI and RDI. Based on the PCI, RQI and RDI of the maintenance unit in the second time period, Figure 3 The second maintenance type is determined in the technical condition indicator constraint management shown, Figure 3 The values ​​of 90, 85, 80, 75, etc. are the maintenance thresholds. That is, for any maintenance unit, based on the pavement technical condition index of the maintenance unit in the second time period, Figure 3 Determine the corresponding second maintenance type.

[0056] Step 202: Compare the first maintenance type with the second maintenance type to obtain a comparison result.

[0057] Comparing the first maintenance type with the second maintenance type may include comparing a maintenance requirement of the first maintenance type with a maintenance requirement of the second maintenance type. The comparison result includes one of: the maintenance requirement of the first maintenance type is greater than the maintenance requirement of the second maintenance type, the maintenance requirement of the first maintenance type is equal to the maintenance requirement of the second maintenance type (for example, the first maintenance type and the second maintenance type are the same maintenance type), and the maintenance requirement of the first maintenance type is less than the maintenance requirement of the second maintenance type.

[0058] As an example and not a limitation, based on the classification of maintenance projects into four types: preventive maintenance, repair maintenance-minor repair, repair maintenance-medium repair, and repair maintenance-major repair, the maintenance requirements of these four types of maintenance are as follows: major repair > medium repair > minor repair > preventive maintenance.

[0059] Step 203: Based on the comparison result, update the first maintenance type of the maintenance unit in the first time period.

[0060] Optionally, updating the first maintenance type of the maintenance unit in the first time period based on the comparison result includes: if the comparison result shows that the maintenance requirement of the first maintenance type is less than the maintenance requirement of the second maintenance type, then updating the first maintenance type of the maintenance unit to the second maintenance type, thereby improving the maintenance quality of the maintenance unit. If the comparison result shows that the maintenance requirement of the first maintenance type is greater than or equal to the maintenance requirement of the second maintenance type, then there is no need to update the first maintenance type of the maintenance unit.

[0061] Of course, it is understandable that the first maintenance type of the maintenance unit may be updated based on the comparison result in other ways, and this application does not limit this.

[0062] Step 102: Obtain the pavement damage condition of the maintenance unit in the first time period. The pavement damage condition includes the pavement type and the damage degree of the pavement damage.

[0063] Before determining the recommended maintenance plan for the road network in the first time period, the pavement damage condition index and pavement type of the maintenance unit in the fourth time period can be determined. The end time of the fourth time period is earlier than the start time of the first time period. Then, based on the pavement damage condition index of the maintenance unit in the fourth time period, the pavement damage condition index of the maintenance unit in the first time period is predicted. Finally, based on the pavement damage condition index of the maintenance unit in the first time period, the degree of damage of the pavement damage of the maintenance unit in the first time period is determined. The pavement type of the maintenance unit is generally unchanged, so the pavement type of the maintenance unit in the fourth time period can be determined as the pavement type of the maintenance unit in the first time period. Optionally, the fourth time period can be the same as or different from the second time period, and this application does not limit this.

[0064] The occurrence of pavement defects such as rutting, cracks, and potholes is related to factors such as the load and traffic volume borne by the pavement, as well as many other factors such as road construction materials, climatic conditions, and geological conditions. These factors include discrete variables and continuous variables, and their potential impact is uncertain, making it impossible to describe the change pattern of such indicators using a deterministic, linear mathematical model. The development pattern of pavement defects such as rutting, cracks, and potholes conforms to the Logistic curve, which is characterized by slow growth in the early stages, a significant acceleration in the middle stages, and a gradual easing in the later stages as time increases. Therefore, the Logistic curve can be used to predict the pavement defect condition indicators of the maintenance unit in the first time period. The expression of the Logistic curve is as follows:

[0065]

[0066] Among them, S is an indicator of pavement disease condition, such as crack area, crack length, etc.; K is a setting parameter, which is related to the type of pavement disease; α and β are parameters that control the shape of the curve and the speed of change of the curve, respectively; t is a time parameter.

[0067] The above expression can be converted into a linear equation and substituted into the pavement disease condition index of the maintenance unit in the fourth time period. The least squares method is used to fit the parameters α and β to obtain the model parameters of various pavement diseases in each road section, and then the pavement disease condition index of the maintenance unit in the first time period is predicted.

[0068] Optionally, for different pavement types and different pavement disease types, different pavement disease condition index ranges can be set for different degrees of damage. After predicting the pavement disease condition index of the maintenance unit in the first time period, the pavement disease condition index can be compared with the pavement disease condition index range under the pavement type and pavement disease type to which the maintenance unit belongs in the first time period, and the degree of damage corresponding to the pavement disease condition index range where the pavement disease condition index is located is determined as the damage degree of the pavement disease of the maintenance unit in the first time period.

[0069] Step 103 : determining a recommended maintenance plan for the road network in the first time period based on the first maintenance type of the at least one maintenance unit in the first time period and the maintenance quality constraint of the road network.

[0070] The maintenance recommendation plan includes recommending a first target maintenance unit to be maintained using a first maintenance type in a first time period, and / or recommending a second target maintenance unit not to be maintained in the first time period.

[0071] The aforementioned maintenance quality constraints include a pavement damage constraint, which is used to constrain the damage level of a maintenance unit's pavement damage during the first time period to be lower than the damage level threshold corresponding to the pavement damage type for the pavement type to which it belongs. After obtaining the pavement damage status of the maintenance unit during the first time period, a determination can be made based on the pavement damage status to determine whether the damage level of the maintenance unit's pavement damage during the first time period is lower than the damage level threshold corresponding to the pavement damage type for the pavement type to which it belongs. If the damage level of the maintenance unit's pavement damage during the first time period is not lower than the damage level threshold corresponding to the pavement damage type for the pavement type to which it belongs, then, based on the pavement damage constraint, it is recommended that the maintenance unit be maintained using the first maintenance type during the first time period. This ensures that the maintenance unit meets the requirements of the pavement damage constraint after maintenance (i.e., the damage level of the maintenance unit's pavement damage during the first time period is lower than the damage level threshold corresponding to the pavement damage type for the pavement type to which it belongs).

[0072] When there are more than two maintenance units, in order to improve the maintenance efficiency of the road network and ensure that some maintenance units can be effectively maintained, the two or more maintenance units can be sorted to obtain a maintenance order for the two or more maintenance units, and the maintenance unit with the highest ranking can be recommended as the first target maintenance unit. On this basis, before executing step 103, this embodiment further includes:

[0073] For any maintenance unit, if the climate condition of the maintenance unit in the third time period is the first climate condition, and the pavement damage type of the maintenance unit in the third time period includes the target pavement damage type, then the maintenance unit is ranked earlier in the maintenance sequence, and the end time of the third time period is earlier than the start time of the first time period;

[0074] If the climatic conditions of the maintenance unit in the third time period are the second climatic conditions, and the pavement damage types of the maintenance unit in the third time period include the target pavement damage type, then the maintenance unit is ranked later in the maintenance sequence, the damage degree of the target pavement damage type is aggravated by the influence of the first climatic conditions, and the damage degree of the target pavement damage type is more affected by the first climatic conditions than by the second climatic conditions;

[0075] Among them, the maintenance unit that is ranked higher in the maintenance order is recommended as the first target maintenance unit.

[0076] Taking into account the impact of weather conditions on pavement damage, the arrangement position of the maintenance unit in the maintenance sequence can be adjusted based on the weather conditions in the third time period.

[0077] As an example and not a limitation, the target pavement disease type is cracks, the first climate condition is heavy rain, and the second climate condition is dry weather. When there is heavy rain, crack repairs one month late may cause slurrying. At this time, the maintenance unit whose pavement disease type includes cracks in the third time period can be ranked higher in the maintenance sequence, thereby increasing the maintenance priority of the maintenance unit. When the climate is dry, the impact of this climate condition on cracks is small. The maintenance unit whose pavement disease type includes cracks in the third time period can be ranked lower in the maintenance sequence, thereby reducing the maintenance priority of the maintenance unit. Of course, it is understandable that the arrangement position of the maintenance unit in the maintenance sequence can also be adjusted according to actual needs, such as ranking maintenance units with great economic significance higher in the maintenance sequence.

[0078] In order to integrate the multiple attribute characteristics of each maintenance unit (such as climate conditions and road surface technical condition indicators) and reduce the influence of subjective factors on the maintenance sequence of maintenance units, in a possible implementation method, in the process of determining the maintenance recommendation plan for the road network in the first time period, it is also possible to use the following method: Figure 4 The steps shown determine a first target maintenance unit.

[0079] Step 401 : For any maintenance unit, based on the climate conditions of the maintenance unit in a third time period and the ideal climate conditions, determine a climate correlation degree representing a first similarity level.

[0080] The first similarity degree is the similarity between the climate conditions of the maintenance unit in the third time period and the ideal climate conditions, and the value of the climate correlation is positively correlated with the first similarity degree.

[0081] The ideal climatic conditions described above can be relatively stable and conducive to maintaining a good pavement condition and mitigating the occurrence or development of pavement defects. Under ideal climatic conditions, a maintenance unit has a minimal impact on the extent of pavement defects. The less similar a maintenance unit's climatic conditions in the third time period are to the ideal climatic conditions, the more prioritized maintenance that maintenance unit requires.

[0082] Step 402 : For any maintenance unit, based on the pavement technical condition of the maintenance unit in the third time period and the ideal pavement technical condition, a technical condition correlation degree representing a second similarity level is determined.

[0083] The second similarity degree is the similarity between the pavement technical condition of the maintenance unit in the third time period and the ideal pavement technical condition, and the value of the technical condition correlation is positively correlated with the second similarity degree.

[0084] The ideal pavement technical condition indicator may be a pavement technical condition indicator corresponding to a pavement reaching a predetermined state in terms of performance, usability, and durability. Under the ideal pavement technical condition indicator, the pavement quality of the maintenance unit is relatively good. The less similar the pavement technical condition indicator of the maintenance unit in the third time period is to the ideal pavement technical condition indicator, the more priority maintenance is required for that maintenance unit.

[0085] Optionally, the above-mentioned ideal climate conditions and the above-mentioned ideal pavement technical condition indicators can be set in advance, or when the number of maintenance units is more than two, the ideal climate conditions can be selected from the climate conditions of more than two maintenance units in the third time period, and the ideal pavement technical condition indicators can be selected from the pavement technical condition indicators of more than two maintenance units in the third time period.

[0086] As an example and not a limitation, the climate conditions of two or more maintenance units in the third time period are quantified to obtain values ​​for the climate conditions of the two or more maintenance units in the third time period. A larger value indicates a smaller impact of the corresponding climate condition on pavement defects. Based on this, the climate condition corresponding to the maximum value among the values ​​can be used as the ideal climate condition. The maximum value among the pavement technical condition indicators of the two or more maintenance units in the third time period is used as the ideal pavement technical condition indicator.

[0087] Step 403 : performing weighted summation of the climate correlation and technical condition correlation of the same maintenance unit to obtain the comprehensive correlation of the maintenance unit.

[0088] In one embodiment, the climate correlation and technical condition correlation of the same maintenance unit may be weighted and summed based on the climate weight of the climate correlation and the technical weight of the technical condition correlation to obtain a comprehensive correlation that can reflect the comprehensive status of the maintenance unit.

[0089] Among them, the climate weight and technical weight can be pre-set or calculated using expert evaluation method or entropy method, which is not limited in this application.

[0090] In step 404, the maintenance unit with a comprehensive correlation less than a preset threshold is determined as the first target maintenance unit, or the maintenance units ranked in the top M positions in comprehensive correlation are determined as the first target maintenance units in order of comprehensive correlation from small to large, where M is an integer greater than zero.

[0091] As an example but not a limitation, the comprehensive correlation and maintenance sequence of each maintenance unit can be determined based on the matter-element analysis method.

[0092] The main idea of ​​matter-element analysis is to describe things using three elements: thing, characteristic, and value, in the form of an ordered triple. This triple is called a matter-element. In this example, a matter-element is composed of a maintenance unit, its attributes such as pavement technical condition indicators and climate conditions, and the corresponding values.

[0093] The method of determining the maintenance sequence of each maintenance unit based on the matter-element analysis method is as follows:

[0094] (1) Determine the feature dimensions and maintenance units and combine them to form the initial composite element. The value of each attribute feature needs to be normalized and mapped to the interval [0,1].

[0095] (2) From all the initial composite elements, the maximum value of each attribute feature is selected to form the best element.

[0096] (3) Based on the initial composite element and the optimal matter-element, the correlation degree of the corresponding attribute characteristics (such as climate correlation degree, technical status correlation degree, etc.) is calculated. The calculation formula is as follows:

[0097]

[0098] Among them, Δ i,j is the absolute value of the difference between the value of the j-th attribute feature of the i-th maintenance unit and the corresponding optimal matter-element; Δmin and Δmax are the minimum and maximum absolute values ​​corresponding to the j-th attribute feature of each maintenance unit, respectively; ρ is the resolution coefficient.

[0099] (4) Determine the weight of the attribute features. This can be achieved by using the expert evaluation method or the entropy method. The entropy method is a mathematical method used to determine the degree of dispersion of an indicator. The greater the degree of dispersion, the greater the impact of the indicator on the comprehensive evaluation.

[0100] (5) Calculate the comprehensive correlation degree based on the correlation degree and the weight of the attribute characteristics. The smaller the comprehensive correlation degree, the worse the overall condition of the maintenance unit is, and the more priority maintenance is needed.

[0101] (6) Determine the maintenance order of the maintenance unit according to the size of the comprehensive correlation.

[0102] In this embodiment, when analyzing maintenance priorities, in addition to considering climate conditions and pavement technical condition indicators (e.g., roads with worse technical conditions as indicated by the pavement technical condition indicator receive higher priority), other attributes such as highway administrative and technical grades (e.g., roads with higher administrative and technical grades receive higher priority), the severity of pavement damage (e.g., roads with more severe damage receive higher priority), traffic volume (e.g., roads with higher traffic volume receive higher priority), and construction year (e.g., roads with earlier construction years receive higher priority), thereby making the determined comprehensive relevance more accurate. Highway administrative grades can be categorized as national, provincial, county, township, and dedicated highways based on their status in the road network.

[0103] To improve road network maintenance efficiency and ensure that some maintenance units receive effective maintenance, maintenance units with a comprehensive relevance below a preset threshold, or those ranked in the top M, can be constrained to be the first target maintenance units. This prioritizes maintenance of units with poorer overall conditions while considering the maintenance needs of the entire road network. Optionally, M can be set based on scenario requirements.

[0104] For maintenance units (i.e., candidate maintenance units) whose damage level of pavement diseases in the first time period is lower than the damage level threshold of the corresponding pavement disease type under the corresponding pavement type, in one possible implementation, based on the maintenance quality constraint condition, the candidate maintenance unit can be recommended as the first target maintenance unit, or the candidate maintenance unit can be recommended as the second target maintenance unit.

[0105] Optionally, a specific recommendation scheme for the candidate maintenance unit can be selected based on scenario requirements, or based on constraints such as the maintenance cost of the road network and the technical condition of the road surface. This application does not limit this.

[0106] Since the number of recommended maintenance plans for the road network in the first time period can be more than two (for example, a candidate maintenance unit can be recommended as the first target maintenance unit or the second target maintenance unit, so the road network can have different recommended maintenance plans in the first time period for different recommended plans for the candidate maintenance units), in this case, the target recommended maintenance plan for the road network in the first time period can be selected from the two or more recommended maintenance plans in the following way:

[0107] Determine the good road rates of the recommended road network when two or more recommended maintenance plans are respectively adopted in the first time period, and obtain two or more good road rates;

[0108] The maintenance recommendation plan corresponding to the maximum value of the two or more excellent road rates is determined as the target maintenance recommendation plan of the road network in the first time period.

[0109] The excellent road rate may be defined as the percentage of the sum of the mileage with excellent and good road technical condition grades to the total assessed mileage. The total assessed mileage is the sum of the mileage of the maintenance units recommended for maintenance in the road network (i.e., all maintenance units in step 101).

[0110] As an example and not a limitation, the road pavement technical condition can be divided into five levels: excellent, good, medium, poor, and poor based on evaluation indicators such as PQI, PCI, RQI, RDI, Pavement Bumping Index (PBI), Pavement Surface Wearing Index (PWI), Pavement Skidding Resistance Index (SRI), and Pavement Structure Strength Index (PSSI). The classification standards for each level are shown in Table 3. In addition, the PCI classification standard for expressways should be greater than or equal to 92 for "excellent", between 80 and 92 for "good", and the others remain unchanged. The RQI classification standard for cement concrete pavements should be greater than or equal to 88 for "excellent", between 80 and 88 for "good", and the others remain unchanged.

[0111] Table 3

[0112]

[0113] For any maintenance unit in any maintenance recommendation plan for the road network in the first time period, the evaluation index of the maintenance unit based on the recommended plan in the first time period can be predicted based on the recommended plan of the maintenance unit. Based on the evaluation index, the road surface technical condition level of the maintenance unit based on the recommended plan in the first time period can be predicted.

[0114] If the recommended solution for a maintenance unit is to recommend the maintenance unit as the first target maintenance unit, that is, to recommend that the maintenance unit adopt the corresponding first maintenance type for maintenance in the first time period, then the evaluation index of the maintenance unit in the first time period can be predicted based on the evaluation index of the maintenance unit in the second time period, the first maintenance type in the first time period, and the value range of the evaluation index after maintenance. The value range is used to constrain the lower and upper limits of the evaluation index of the maintenance unit in the first time period. If the recommended solution for a maintenance unit is to recommend the maintenance unit as the second target maintenance unit, that is, to recommend that the maintenance unit not undergo maintenance in the first time period, then the evaluation index of the maintenance unit in the first time period can be predicted based on the evaluation index of the maintenance unit in the second time period.

[0115] In one embodiment, adjustments to different assessment indicators for different maintenance types can be pre-set, with greater adjustments corresponding to maintenance types requiring greater maintenance. It should be understood that this application does not limit the specific values ​​of the adjustments. By way of example and not limitation, the PQI adjustment for repair maintenance-major overhaul is 20, the PQI adjustment for repair maintenance-medium overhaul is 10, the PQI adjustment for repair maintenance-minor overhaul is 5, and the PQI adjustment for preventive maintenance is 2.

[0116] After a maintenance unit is maintained based on its corresponding first maintenance type, its road surface improves, so its corresponding assessment index for the first time period may also be relatively high. Since assessment indexes typically have an upper limit, the assessment index for the first maintenance unit in the first time period can be constrained within a pre-set range of values ​​for the post-maintenance assessment index, thereby making the assessment index for the first maintenance unit in the first time period more consistent with actual conditions. As an example and not a limitation, suppose a maintenance unit has a PQI of 50 in the second time period, with a range of values ​​greater than or equal to 90 and less than or equal to 100. The first maintenance type is repair maintenance-overhaul, and the adjustment amount is 20. The PQI becomes 70. Since 70 is outside the aforementioned range, the PQI for the first time period of this maintenance unit can be determined as 90.

[0117] In one embodiment, if the recommended solution for a maintenance unit is to recommend the maintenance unit as the second target maintenance unit, a grey theory model may be used to predict any evaluation index of the maintenance unit in the first time period. The prediction process is as follows:

[0118] (1) Determine the evaluation index of the maintenance unit in the second time period. Optionally, the second time period may be at least four years. By way of example and not limitation, determine the PQI of the maintenance unit in the past four years or the past five years.

[0119] (2) Accumulate the evaluation indicators of the maintenance unit in the second time period to generate new data, and generate neighboring mean and equal-weighted data of the new data through data processing.

[0120] (3) A first-order single-variable differential equation is established based on the new data and the neighboring mean equally weighted data, and the least squares method is used to solve it.

[0121] (4) Calculate the evaluation index of the maintenance unit in the first time period based on the solved parameters.

[0122] (5) Compare the evaluation indicators of the maintenance unit in the second time period with the predicted evaluation indicators in the first time period, calculate indicators such as prediction accuracy, variance ratio and small error probability, and verify the grey theory model based on these indicators.

[0123] (6) After verifying the grey theory model, the final predicted evaluation index of the maintenance unit in the first time period is output.

[0124] The evaluation indicators of the maintenance unit in the first time period are predicted based on the grey theory model. When the number of evaluation indicators in the second time period is small, the information of the evaluation indicators is small, and the information is incomplete, a more accurate prediction can be made for the evaluation indicators.

[0125] In one possible implementation, constraints such as the road network's maintenance cost and pavement technical condition may also be considered when determining the target maintenance recommendation plan. Specifically, based on the road network's maintenance cost constraint and / or pavement technical condition constraint, the maintenance recommendation plan corresponding to the maximum of the two or more excellent road rates is determined as the target maintenance recommendation plan for the road network during the first time period.

[0126] The maintenance cost constraint is used to constrain the total maintenance cost to be less than or equal to the preset maintenance cost.

[0127] The preset maintenance cost may refer to the maintenance cost of the road network in the first time period. The total maintenance cost may refer to the total maintenance cost of the road network corresponding to each recommended maintenance plan in the process of determining the target maintenance recommendation plan for the road network.

[0128] The pavement technical condition constraint is used to constrain the road network's pavement technical condition index to be greater than or equal to the pavement technical condition threshold during the first time period. It can also be used to constrain the road network's excellent road ratio to be greater than or equal to the excellent road ratio threshold, and its good road ratio to be greater than or equal to the good road ratio threshold, during the first time period. The excellent road ratio can be the percentage of mileage with an excellent road technical condition rating compared to the total assessed mileage.

[0129] In the process of selecting target maintenance recommendation plans for candidate maintenance units, this embodiment takes the maximum good road rate as the goal and considers constraints such as maintenance costs and road surface technical conditions. A target maintenance recommendation plan is determined from multiple maintenance recommendation plans. This can determine the optimal maintenance recommendation plan for the road network (i.e., the target maintenance recommendation plan for the road network), and can allocate limited maintenance funds to the maintenance units in the road network that are most in need of maintenance, thereby achieving greater maintenance benefits.

[0130] Optionally, a 0-1 integer programming model can be used to optimally allocate maintenance funds, where 0 and 1 represent recommending the maintenance unit as the second target maintenance unit and recommending the maintenance unit as the first target maintenance unit, respectively. On this basis, the maximum good road rate is set as the goal, and the objective function is established. The objective function can be expressed as follows:

[0131]

[0132] Where Z is the good road rate of the road network in the first time period; N is the total number of maintenance units; L is the total length of the road network; L n is the length of the nth maintenance unit; δ n is a 0-1 variable. If the pavement technical condition level of the nth maintenance unit is excellent, then δ n =1, otherwise δ n =0.

[0133] The maintenance cost constraint can be expressed as follows:

[0134]

[0135] Among them, X rn is a 0-1 variable. If the nth maintenance unit is recommended to implement the rth maintenance type, then X rn =1, otherwise X rn = 0, R is the value obtained by adding 1 to the number of maintenance types (i.e., adding a type that does not require maintenance work on the basis of the maintenance type); C r is the unit price of the rth maintenance type. Since the maintenance unit price varies in different areas, the unit price of the maintenance type can be adjusted according to the actual situation; K n is the pavement width of the nth maintenance unit; E is the total maintenance cost.

[0136] As an example and not a limitation, in addition to the four maintenance types of preventive maintenance, repair maintenance-minor repair, repair maintenance-medium repair, and repair maintenance-major repair, a type where no maintenance work is performed (i.e., maintenance is not recommended) can be added. These five maintenance types can be numbered as follows: r = 1 for no maintenance work, r = 2 for preventive maintenance, r = 3 for repair maintenance-minor repair, r = 4 for repair maintenance-medium repair, and r = 5 for repair maintenance-major repair. As an example and not a limitation, Table 4 shows a unit price table for each maintenance type.

[0137] Table 4

[0138]

[0139] When determining the target maintenance recommendation plan for the road network in the first time period, not only the pavement technical condition indicators, the rate of excellent and good roads are taken into consideration, but also the pavement diseases. A corresponding threshold value (i.e., damage threshold) is set for the damage degree of each pavement disease type for each pavement type to ensure that the damage degree of each maintenance unit in the first time period does not exceed the corresponding damage threshold, thereby ensuring the pavement performance. For example, for the cracking disease of asphalt pavement, based on the pavement disease constraint condition, it can be set that if the damage degree of the cracking disease of a maintenance unit with the pavement type of asphalt pavement reaches moderate damage in the first time period, the maintenance unit will be recommended for maintenance based on the corresponding first maintenance type. The maintenance quality constraint condition can be expressed as follows:

[0140]

[0141] Among them, PQI', YD', and YL are the road surface technical condition indicators (such as road surface technical condition index), excellent road rate, and good road rate of the road network in the first time period respectively; PQI s 、YD s , YL s are the pavement technical condition index threshold, the excellent road rate threshold, and the good road rate threshold, respectively. They are the maintenance quality requirements for the pavement technical condition index, excellent road rate, and good road rate in the highway maintenance technical standards (i.e., pavement technical condition quality requirements). Table 5 shows an example of pavement technical condition quality requirements; LD' is the damage degree of the pavement disease in the maintenance unit belonging to the asphalt pavement; LD e is the damage threshold of each pavement disease type of asphalt pavement; SD' is the damage degree of pavement disease in the maintenance unit of cement pavement; SD e is the damage threshold for each pavement disease type of cement pavement.

[0142] Table 5

[0143]

[0144] Constraints are applied to recommended maintenance plans based on the maintenance needs analysis results. For example, if a maintenance unit's maintenance needs analysis results in a repair-medium repair scenario, the only options for that unit are repair-medium repair or no maintenance. Constraints are also applied based on the maintenance ranking analysis results (i.e., the maintenance order). Units ranked in the top M in the maintenance order must be designated as the first target maintenance unit.

[0145] In addition, you can also constrain the number of maintenance types, that is, each maintenance unit can only select one maintenance type. The expression is as follows:

[0146]

[0147] This embodiment takes pavement disease factors into consideration in the prediction of pavement disease condition indicators, maintenance demand analysis, maintenance sequence analysis, and optimization of maintenance recommendation plans, making the considerations more comprehensive, the results determined in the above four stages more accurate, and the final maintenance recommendation plan more in line with actual conditions.

[0148] When determining the recommended maintenance plan for the road network in the first time period, the embodiment of the present application takes into account the first maintenance type of at least one maintenance unit in the road network in the first time period and the pavement disease constraint condition of the road network. The pavement disease constraint condition is used to constrain the damage level of the pavement disease of the maintenance unit in the first time period to be lower than the damage level threshold of the corresponding pavement disease type under the corresponding pavement type. When the damage level of the pavement disease of the maintenance unit in the first time period is not lower than the damage level threshold of the corresponding pavement disease type under the corresponding pavement type, it is recommended to use the first maintenance type to maintain the maintenance unit in the first time period, so that the maintained maintenance unit meets the pavement disease constraint condition of the road network, and can ensure that the final maintenance recommendation plan is more accurate and more in line with the actual situation. Based on the maintenance recommendation plan, the road network can be maintained more accurately and achieve better maintenance results.

[0149] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0150] Corresponding to the pavement maintenance decision-making method described in the above embodiment, Figure 5 A structural schematic diagram of a pavement maintenance decision-making device provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0151] Reference Figure 5 , the device comprises:

[0152] A type acquisition module 501 is configured to acquire a first maintenance type of at least one maintenance unit in a road network in a first time period, where the start time of the first time period is later than the current time; the road network includes at least one maintenance unit;

[0153] The disease acquisition module 502 is used to obtain the pavement disease condition of the maintenance unit in the first time period, wherein the pavement disease condition includes the pavement type and the damage degree of the pavement disease;

[0154] A plan determination module 503 is configured to determine a recommended maintenance plan for the road network during the first time period based on the first maintenance type of the at least one maintenance unit during the first time period and the maintenance quality constraint of the road network, wherein the recommended maintenance plan includes recommending a first target maintenance unit to be maintained using the first maintenance type during the first time period and / or recommending a second target maintenance unit not to be maintained during the first time period.

[0155] Among them, the maintenance quality constraint conditions include pavement disease constraint conditions, and the pavement disease constraint conditions are used to constrain the damage level of the pavement disease of the maintenance unit in the first time period to be lower than the damage level threshold of the corresponding pavement disease type under the corresponding pavement type; if the damage level of the pavement disease of the maintenance unit in the first time period is not lower than the damage level threshold of the corresponding pavement disease type under the corresponding pavement type, it is recommended to use the first maintenance type to maintain the maintenance unit in the first time period.

[0156] Optionally, the type acquisition module 501 is specifically configured to:

[0157] For any of the maintenance units, determining the pavement type, the degree of damage of the pavement disease, and the pavement disease type of the maintenance unit in a second time period, where the end time of the second time period is earlier than the start time of the first time period;

[0158] Determining, based on the pavement type and pavement damage type to which the maintenance unit belongs in the second time period, a correspondence between the damage degree corresponding to the pavement damage type and the maintenance type under the pavement type;

[0159] Based on the damage degree of the pavement disease of the maintenance unit in the second time period, a first maintenance type of the maintenance unit in the first time period is determined from the corresponding relationship.

[0160] Optionally, the above device further includes:

[0161] a maintenance determination module, configured to determine a second maintenance type for the maintenance unit in the first time period based on a pavement technical condition indicator of the maintenance unit in the second time period;

[0162] a comparison module, configured to compare the first maintenance type with the second maintenance type to obtain a comparison result;

[0163] A type updating module is used to update the first maintenance type of the maintenance unit in the first time period based on the comparison result.

[0164] Optionally, when the number of the maintenance units is more than two, the device further comprises:

[0165] a first adjustment module configured to, for any of the maintenance units, if the climatic conditions of the maintenance unit in a third time period are the first climatic conditions and the pavement damage type of the maintenance unit in the third time period includes the target pavement damage type, arrange the maintenance unit to be ranked higher in the maintenance order, and end the third time period earlier than the start time of the first time period;

[0166] a second adjustment module configured to, if the climatic condition of the maintenance unit during the third time period is the second climatic condition, and the pavement damage type of the maintenance unit during the third time period includes the target pavement damage type, place the maintenance unit at a lower position in the maintenance sequence, the damage degree of the target pavement damage type being aggravated by the influence of the first climatic condition, and the damage degree of the target pavement damage type being more affected by the first climatic condition than by the second climatic condition;

[0167] Among them, the maintenance unit that is ranked higher in the maintenance order is preferentially recommended as the first target maintenance unit.

[0168] Optionally, the solution determination module 503 is further configured to:

[0169] For any maintenance unit, determining a climate correlation degree representing a first degree of similarity based on the climate conditions of the maintenance unit in the third time period and the ideal climate conditions, where the first degree of similarity is the degree of similarity between the climate conditions of the maintenance unit in the third time period and the ideal climate conditions, and a value of the climate correlation degree is positively correlated with the first degree of similarity;

[0170] For any maintenance unit, determining a technical condition correlation degree representing a second degree of similarity based on the pavement technical condition index of the maintenance unit during the third time period and the ideal pavement technical condition index, wherein the second degree of similarity is the similarity between the pavement technical condition index of the maintenance unit during the third time period and the ideal pavement technical condition index, and a value of the technical condition correlation degree is positively correlated with the second degree of similarity;

[0171] Performing a weighted summation of the climate correlation and the technical condition correlation of the same maintenance unit to obtain a comprehensive correlation of the maintenance unit;

[0172] The maintenance unit whose comprehensive correlation degree is less than the preset threshold is determined as the first target maintenance unit, or the maintenance units ranked in the top M positions in comprehensive correlation degree are determined as the first target maintenance unit according to the order of comprehensive correlation degree from small to large, where M is an integer greater than zero.

[0173] Optionally, the solution determination module 503 is further configured to:

[0174] Based on the maintenance quality constraint condition, a candidate maintenance unit is recommended as the first target maintenance unit, or the candidate maintenance unit is recommended as the second target maintenance unit. The candidate maintenance unit is a maintenance unit whose damage degree of pavement disease in the first time period is lower than the damage degree threshold of the corresponding pavement disease type under the pavement type to which it belongs.

[0175] Optionally, when the number of the recommended maintenance plans is two or more, the device further comprises:

[0176] An excellent determination module is configured to determine an excellent road rate when recommending that the road network adopt two or more of the maintenance recommended plans in the first time period, thereby obtaining two or more excellent road rates;

[0177] The target determination module is used to determine the maintenance recommendation plan corresponding to the maximum value of the two or more excellent road rates as the target maintenance recommendation plan of the road network in the first time period.

[0178] Optionally, the target determination module is specifically configured to:

[0179] Based on the maintenance cost constraint and / or the road surface technical condition constraint of the road network, a maintenance recommendation plan corresponding to the maximum value of the two or more excellent road rates is determined as a target maintenance recommendation plan for the road network in the first time period;

[0180] The maintenance cost constraint condition is used to constrain the total maintenance cost to be less than or equal to the preset maintenance cost;

[0181] The pavement technical condition constraint condition is used to constrain the pavement technical condition index of the road network in the first time period to be greater than or equal to a pavement technical condition index threshold.

[0182] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of this application. Their specific functions and technical effects can be found in the method embodiment section and will not be repeated here.

[0183] Figure 6 This is a schematic diagram of the structure of the electronic device provided in the embodiment of the present application. Figure 6 As shown, the electronic device 6 of this embodiment includes: at least one processor 60 ( Figure 6 Only one is shown), a memory 61 and a computer program 62 stored in the memory 61 and executable on the at least one processor 60, wherein the processor 60 implements the steps of any of the above-mentioned method embodiments when executing the computer program 62.

[0184] The electronic device may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will appreciate that Figure 6 This is merely an example of the electronic device 6 and does not constitute a limitation on the electronic device 6 . The electronic device 6 may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device 6 may also include input and output devices, network access devices, etc.

[0185] The processor 60 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. A general-purpose processor may be a microprocessor or any conventional processor.

[0186] In some embodiments, the memory 61 may be an internal storage unit of the electronic device 6, such as a hard disk or memory of the electronic device 6. In other embodiments, the memory 61 may also be an external storage device of the electronic device 6, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 6. Furthermore, the memory 61 may also include both an internal storage unit of the electronic device 6 and an external storage device. The memory 61 is used to store an operating system, an application program, a boot loader, data, and other programs, such as the program code of the computer program. The memory 61 may also be used to temporarily store data that has been output or is about to be output.

[0187] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0188] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the process in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program, when executed by the processor, can implement the steps of the above-mentioned various method embodiments. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include at least: any entity or device that can carry the computer program code to the device / electronic device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electric carrier signal, a telecommunication signal and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk.

[0189] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0190] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0191] In the embodiments provided in the present application, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are merely schematic. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0192] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A pavement maintenance decision-making method, characterized in that: include: Obtaining a first maintenance type of at least one maintenance unit in a road network in a first time period, where a start time of the first time period is later than a current time; the road network includes at least one maintenance unit; Obtaining a pavement damage condition of the maintenance unit during the first time period, wherein the pavement damage condition includes a pavement type and a degree of damage of the pavement damage; determining, based on the first maintenance type of the at least one maintenance unit in the first time period and the maintenance quality constraint of the road network, a maintenance recommendation plan for the road network in the first time period, the maintenance recommendation plan including recommending a first target maintenance unit to be maintained using the first maintenance type in the first time period and / or recommending a second target maintenance unit not to be maintained in the first time period; The maintenance quality constraint condition includes a pavement disease constraint condition, and the pavement disease constraint condition is used to constrain the damage degree of the pavement disease of the maintenance unit in the first time period to be lower than the damage degree threshold of the corresponding pavement disease type under the corresponding pavement type; If the damage degree of the pavement disease of the maintenance unit in the first time period is not lower than the damage degree threshold of the corresponding pavement disease type under the corresponding pavement type, it is recommended to use the first maintenance type to maintain the maintenance unit in the first time period.

2. The method according to claim 1, characterized in that The obtaining of a first maintenance type of at least one maintenance unit in the road network in a first time period includes: For any of the maintenance units, determining the pavement type, the degree of damage of the pavement disease, and the pavement disease type of the maintenance unit in a second time period, where the end time of the second time period is earlier than the start time of the first time period; Determining, based on the pavement type and pavement damage type to which the maintenance unit belongs in the second time period, a correspondence between the damage degree corresponding to the pavement damage type and the maintenance type under the pavement type; Based on the damage degree of the pavement disease of the maintenance unit in the second time period, a first maintenance type of the maintenance unit in the first time period is determined from the corresponding relationship.

3. The method according to claim 2, characterized in that After determining the first maintenance type of the maintenance unit in the first time period from the corresponding relationship, the method further includes: determining a second maintenance type for the maintenance unit in the first time period based on the pavement technical condition index of the maintenance unit in the second time period; Comparing the first curing type with the second curing type to obtain a comparison result; Based on the comparison result, the first maintenance type of the maintenance unit in the first time period is updated.

4. The method according to claim 1, wherein When the number of the maintenance units is two or more, before determining the recommended maintenance plan for the road network in the first time period based on the first maintenance type of the at least one maintenance unit in the first time period and the maintenance quality constraint of the road network, the method further includes: For any of the maintenance units, if the climate conditions of the maintenance unit in the third time period are the first climate conditions, and the pavement damage types of the maintenance unit in the third time period include the target pavement damage type, the maintenance unit is ranked earlier in the maintenance order, and the end time of the third time period is earlier than the start time of the first time period; If the climatic condition of the maintenance unit in the third time period is the second climatic condition, and the pavement damage type of the maintenance unit in the third time period includes the target pavement damage type, then the maintenance unit is ranked later in the maintenance order, the damage degree of the target pavement damage type is aggravated by the influence of the first climatic condition, and the damage degree of the target pavement damage type is more affected by the first climatic condition than by the second climatic condition; Among them, the maintenance unit that is ranked higher in the maintenance order is preferentially recommended as the first target maintenance unit.

5. The method according to claim 4, characterized in that In determining the recommended maintenance plan for the road network in the first time period, the method further includes: For any maintenance unit, determining a climate correlation degree representing a first degree of similarity based on the climate conditions of the maintenance unit in the third time period and the ideal climate conditions, where the first degree of similarity is the degree of similarity between the climate conditions of the maintenance unit in the third time period and the ideal climate conditions, and a value of the climate correlation degree is positively correlated with the first degree of similarity; For any maintenance unit, determining a technical condition correlation degree representing a second degree of similarity based on the pavement technical condition index of the maintenance unit during the third time period and the ideal pavement technical condition index, wherein the second degree of similarity is the similarity between the pavement technical condition index of the maintenance unit during the third time period and the ideal pavement technical condition index, and a value of the technical condition correlation degree is positively correlated with the second degree of similarity; Performing a weighted summation of the climate correlation and the technical condition correlation of the same maintenance unit to obtain a comprehensive correlation of the maintenance unit; The maintenance unit whose comprehensive correlation degree is less than the preset threshold is determined as the first target maintenance unit, or the maintenance units ranked in the top M positions in comprehensive correlation degree are determined as the first target maintenance unit according to the order of comprehensive correlation degree from small to large, where M is an integer greater than zero.

6. The method according to claim 1, characterized in that The determining, based on the first maintenance type of the at least one maintenance unit in the first time period and the maintenance quality constraint of the road network, of a maintenance recommendation plan for the road network in the first time period further includes: Based on the maintenance quality constraint condition, a candidate maintenance unit is recommended as the first target maintenance unit, or the candidate maintenance unit is recommended as the second target maintenance unit. The candidate maintenance unit is a maintenance unit whose damage degree of pavement disease in the first time period is lower than the damage degree threshold of the corresponding pavement disease type under the pavement type to which it belongs.

7. The method according to any one of claims 1 to 6, characterized in that When the number of the recommended maintenance plans is two or more, the method further includes: Determine and recommend the good road rates of the road network when two or more of the recommended maintenance plans are respectively adopted in the first time period, and obtain two or more good road rates; The maintenance recommendation plan corresponding to the maximum value of the two or more excellent road rates is determined as the target maintenance recommendation plan for the road network in the first time period.

8. The method according to claim 7, characterized in that Determining the recommended maintenance plan corresponding to the maximum value of the two or more excellent road rates as the target recommended maintenance plan for the road network in the first time period includes: Based on the maintenance cost constraint and / or the road surface technical condition constraint of the road network, a maintenance recommendation plan corresponding to the maximum value of the two or more excellent road rates is determined as a target maintenance recommendation plan for the road network in the first time period; The maintenance cost constraint condition is used to constrain the total maintenance cost to be less than or equal to the preset maintenance cost; The pavement technical condition constraint condition is used to constrain the pavement technical condition index of the road network in the first time period to be greater than or equal to a pavement technical condition index threshold.

9. A road maintenance decision-making device, characterized in that: include: a type acquisition module, configured to acquire a first maintenance type of at least one maintenance unit in a road network in a first time period, wherein a start time of the first time period is later than a current time; the road network includes at least one maintenance unit; a disease acquisition module, configured to acquire a pavement disease condition of the maintenance unit during the first time period, wherein the pavement disease condition includes a pavement type and a degree of damage of the pavement disease; a plan determination module, configured to determine a recommended maintenance plan for the road network during the first time period based on the first maintenance type of the at least one maintenance unit during the first time period and a maintenance quality constraint of the road network, the recommended maintenance plan including recommending a first target maintenance unit to be maintained using the first maintenance type during the first time period and / or recommending a second target maintenance unit not to be maintained during the first time period; The maintenance quality constraint condition includes a pavement disease constraint condition, and the pavement disease constraint condition is used to constrain the damage degree of the pavement disease of the maintenance unit in the first time period to be lower than the damage degree threshold of the corresponding pavement disease type under the corresponding pavement type; If the damage degree of the pavement disease of the maintenance unit in the first time period is not lower than the damage degree threshold of the corresponding pavement disease type under the corresponding pavement type, it is recommended to use the first maintenance type to maintain the maintenance unit in the first time period.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the electronic device implements the method according to any one of claims 1 to 8.

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