Road and bridge surface crack defect detection method

Abstract

The invention relates to the technical field of road and bridge detection, and particularly discloses a road and bridge surface crack defect detection method, which comprises a moving assembly used for carrying out moving detection on road and bridge surface crack defects, according to the method, the thermal imager is adopted to detect the crack defects on the surface of the road bridge, and compared with a traditional detection method, the thermal imager is less affected by the external environment, so that the thermal imager can keep higher detection precision and stability in a complex and changeable environment; correspondingly, the method has the advantages of high detection precision, wide detection range, non-contact detection, high detection speed, data visualization, small influence of external environment and the like on the surface crack defects of the road and the bridge, so that the working efficiency of detecting the surface crack defects of the road and the bridge by workers is improved; and workers can conveniently and accurately position and maintain the crack defects on the surfaces of the roads and the bridges.

Description

Technical Field

[0001] The invention belongs to the technical field of road bridge detection, and in particular relates to a method for detecting crack defects on the surface of a road bridge. Background Art

[0002] Crack defects on the surface of roads and bridges are a problem worthy of attention. These cracks not only affect the aesthetics of roads and bridges, but more importantly, they may threaten the safety and durability of the structure. The following is a detailed analysis of crack defects on the surface of roads and bridges:

[0003] During the hardening process of concrete, the volume of water evaporates, causing cracks to form. Such cracks usually appear shortly after the concrete is poured and are often related to factors such as the water-cement ratio of the concrete, cement dosage, and curing conditions. They are mainly caused by improper construction, uneven foundation settlement, or deformation under load. Such cracks usually extend along the longitudinal direction of the bridge or road, posing a threat to the overall stability of the structure. Due to uneven stress distribution inside the concrete or multi-directional stretching under external forces, the network cracks usually present a complex interwoven shape, which has a great impact on the durability of the structure. Unqualified cement stability or improper concrete mix ratios result in excessive shrinkage stress in the hardening process of the concrete, which in turn forms cracks. Cracks caused by voids, wear, rust, aging, and spalling are usually caused by construction defects, material quality problems, or environmental factors (such as corrosion, freeze-thaw cycles, etc.).

[0004] Cracks can cause the infiltration of moisture and harmful substances, accelerate the corrosion of the steel bars inside the concrete and the carbonization process of the concrete, thereby reducing the durability of the structure; serious cracks may cause the bearing capacity of the structure to decrease, and even cause safety accidents such as structural instability or collapse; cracks not only affect the aesthetics of roads and bridges, but may also affect the safety of vehicles and pedestrians.

[0005] The current method for detecting bridge cracks generally relies on manual detection. The manual detection method is time-consuming and requires a lot of manpower, material and financial resources. Not only is the detection accuracy low and the human influence factor is large, but in many cases, due to the inaccessibility of the area or the microscopic size of the crack defect, it is impossible to visually detect the crack defect, thereby reducing the work efficiency of the staff in detecting crack defects on the surface of the road bridge, and it is not convenient for the staff to accurately locate and repair the crack defects on the surface of the road bridge. For this reason, a road bridge surface crack defect detection method is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a method for detecting crack defects on the surface of a road bridge to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A method for detecting crack defects on the surface of a road bridge, characterized by comprising:

[0009] A mobile component is used for mobile detection of crack defects on the surface of a road or bridge, and the mobile component comprises a mobile component;

[0010] The present invention further specifically details that a remote control component is provided on the mobile component, and the mobile component is remotely controlled by a staff member through the remote control component;

[0011] A detection module, used to detect crack defects on the surface of roads and bridges, the detection module comprising a thermal imager, a thermal imager camera and a thermal imager display screen;

[0012] The present invention further specifically describes that the thermal imager and the thermal imager camera are both mounted on a mobile assembly, and the thermal imager and the thermal imager camera are electrically connected, the thermal imager display screen is remotely electrically connected to the thermal imager and the thermal imager camera, the thermal imager display screen is located in the hands of a staff member, and the mobile assembly, the thermal imager and the thermal imager camera can form a whole;

[0013] From the above, we can see that the use of thermal imagers to detect crack defects on the surface of roads and bridges has the following benefits:

[0014] Thermal imagers can accurately detect crack defects by capturing the thermal radiation energy on the surface of roads and bridges and converting it into temperature distribution images. Since there is a difference in thermal radiation energy between cracks and intact parts, thermal imagers can clearly show the location, shape and size of cracks, providing an accurate basis for subsequent maintenance and protection work.

[0015] Thermal imagers have a wide detection range, covering the entire surface of roads and bridges, including hidden parts that are difficult to observe directly. This enables inspectors to fully and carefully understand the crack conditions of roads and bridges, and promptly discover and deal with potential safety hazards;

[0016] Thermal imagers use a non-contact detection method, which does not require direct contact with the surface of roads and bridges, thus avoiding damage or contamination that may be caused by contact in traditional detection methods. At the same time, this non-contact detection method also improves the safety of detection personnel and reduces work risks;

[0017] Thermal imagers have a very fast detection speed and can complete a comprehensive inspection of the road and bridge surface in a short time. This not only improves the detection efficiency, but also reduces the time of traffic interruption due to detection and reduces the impact on traffic operation.

[0018] Thermal imagers can present the detected temperature distribution images in an intuitive and clear way, allowing inspectors to intuitively see the location and distribution of cracks. This data visualization method helps inspectors better understand the characteristics and laws of cracks, providing strong support for subsequent analysis and processing;

[0019] Compared with traditional detection methods, thermal imagers are less affected by the external environment (such as light, humidity, etc.), which enables thermal imagers to maintain high detection accuracy and stability even in complex and changing environments.

[0020] In summary, thermal imagers have many advantages in detecting surface crack defects on roads and bridges, including high detection accuracy, wide detection range, non-contact detection, fast detection speed, data visualization, and little influence from the external environment.

[0021] Using the remote control component, the staff can move the thermal imager and thermal imager camera installed on the mobile component, so that the staff can carry out mobile detection of crack defects on the surface of roads and bridges. The data after the detection is completed will be displayed on the display screen;

[0022] Installing thermal imagers on mobile components to detect crack defects on the surface of roads and bridges has the following benefits:

[0023] Mobile thermal imaging inspection can quickly cover large areas of roads and bridges. Compared with traditional manual inspection or fixed-point inspection, it greatly improves inspection efficiency. Inspectors do not need to check each part one by one, but can quickly scan the entire road and bridge surface with the thermal imager on the mobile component to find crack defects in time.

[0024] Traditional inspection methods require inspectors to directly contact the surface of roads and bridges, which poses certain safety risks. However, installing thermal imagers on mobile components for inspection does not require inspectors to directly contact roads and bridges, greatly reducing safety risks. At the same time, mobile components can also provide a stable inspection platform to reduce inspection errors caused by human factors.

[0025] Roads and bridges are often located in complex environments, such as mountains, rivers, and highways. Traditional detection methods may be limited in these environments, while mobile thermal imaging detection can flexibly cope with various complex environments. Mobile components can carry thermal imagers and travel on uneven roads, and can even perform detection at night or in low light conditions, greatly improving the flexibility and adaptability of detection;

[0026] Thermal imaging can reduce the overall inspection cost. Due to its high inspection efficiency and accuracy, it can reduce the number of repeated inspections and repairs, thereby reducing inspection and maintenance costs. At the same time, mobile inspection can also reduce economic losses caused by traffic interruptions or lane closures.

[0027] Mobile thermal imaging detection can record detection data in real time and generate intuitive images and video data. These data can be used for subsequent data analysis and processing, helping engineers to better understand the cracks of roads and bridges and develop targeted repair and protection plans. At the same time, these data can also be saved as historical data to provide a reference for future detection and maintenance.

[0028] In summary, installing thermal imagers on mobile components to detect surface crack defects on roads and bridges has many benefits, including improving detection efficiency, enhancing detection accuracy, ensuring the safety of detection personnel, adapting to complex environments, reducing detection costs, and facilitating data recording and analysis. This detection method will provide strong support for the safe operation and maintenance of roads and bridges.

[0029] A classification module, used to classify, collect and save the causes of crack defects on the road and bridge surfaces, wherein the classification module is located inside the display screen of the thermal imager;

[0030] The present invention further specifically describes that a data acquisition module is provided inside the display screen for collecting data on crack defects on the surface of roads and bridges. The causes of the crack defects on the surface of roads and bridges are limitations of design theory, insufficient structural bearing capacity, improper construction technology, improper installation of steel mesh and concrete construction problems. The construction method of the road bridge surface crack defect classification module includes the following steps: collecting original bridge images containing various types of road bridge surface crack defects, crack marking and crack segmentation of the collected original road bridge surface crack defect images to construct a sample data set of road bridge surface crack defects;

[0031] From the above, we can see that classifying the different causes of surface crack defects on roads and bridges has the following benefits:

[0032] By classifying the causes of crack defects, the specific causes of cracks can be diagnosed more accurately, which helps engineers and maintenance personnel locate problems more accurately and take more effective repair measures;

[0033] Understanding the different causes of crack defects can help designers and construction personnel take targeted preventive measures during the design and construction process. For example, for cracks caused by temperature changes, more reasonable structural forms and material selections can be considered during design to reduce the impact of temperature stress. In terms of construction, construction quality control can be strengthened to ensure the standardization and rationality of construction technology, thereby reducing the occurrence of cracks caused by construction factors.

[0034] The classification of the causes of crack defects can also guide maintenance and protection work. Different repair measures are required for different crack causes. For example, for cracks caused by steel corrosion, rust removal, rust prevention and reinforcement measures are required; for cracks caused by concrete shrinkage, measures such as strengthening concrete maintenance and controlling concrete mix ratio are required. By classifying the causes of cracks, more targeted maintenance and protection plans can be formulated to improve maintenance efficiency and quality.

[0035] By classifying and diagnosing the causes of crack defects, potential safety hazards can be discovered and dealt with in a timely manner, improving the safety and durability of roads and bridges, which helps reduce traffic accidents and casualties caused by cracks, while extending the service life of roads and bridges and reducing maintenance and replacement costs;

[0036] The classification of the causes of crack defects can also promote scientific research and technological progress. Through in-depth research and discussion on cracks caused by different reasons, it can promote the development of scientific research and technology in related fields and provide more advanced and effective technical means for the construction and maintenance of roads and bridges.

[0037] In summary, classifying the different causes of surface crack defects on roads and bridges has many benefits, including improving diagnostic accuracy, optimizing design and construction, guiding maintenance and protection, improving safety and durability, and promoting scientific research and technological progress. Therefore, in actual engineering, the research and classification of the causes of crack defects should be strengthened to better ensure the safety and durability of roads and bridges.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] By using thermal imagers to detect crack defects on the surfaces of roads and bridges, compared with traditional detection methods, thermal imagers are less affected by the external environment (such as light, humidity, etc.), which enables thermal imagers to maintain high detection accuracy and stability even in complex and changing environments. Thermal imagers have many advantages in detecting crack defects on the surfaces of roads and bridges, including high detection accuracy, wide detection range, non-contact detection, fast detection speed, data visualization, and little influence from the external environment, thereby improving the work efficiency of staff in detecting crack defects on the surfaces of roads and bridges, and facilitating staff to accurately locate and repair crack defects on the surfaces of roads and bridges.

[0040] By installing thermal imagers on mobile components, this detection method can improve detection efficiency, enhance detection accuracy, ensure the safety of detection personnel, adapt to complex environments, reduce detection costs, and facilitate data recording and analysis. This detection method will provide strong support for the safe operation and maintenance of roads and bridges.

[0041] By classifying the different causes of crack defects on the surface of roads and bridges, we can improve the accuracy of diagnosis, optimize design and construction, guide maintenance and protection, improve safety and durability, and promote scientific research and technological progress. Therefore, in actual engineering, we should strengthen the research and classification of the causes of crack defects to better ensure the safety and durability of roads and bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a flow chart of the steps of the present invention. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] like Figure 1 As shown, a method for detecting crack defects on the surface of a road bridge is characterized by comprising:

[0045] A mobile component is used for mobile detection of crack defects on the surface of a road or bridge, and the mobile component comprises a mobile component;

[0046] The present invention further specifically details that a remote control component is provided on the mobile component, and the mobile component is remotely controlled by a staff member through the remote control component;

[0047] A detection module, used to detect crack defects on the surface of roads and bridges, the detection module comprising a thermal imager, a thermal imager camera and a thermal imager display screen;

[0048] The present invention further specifically describes that the thermal imager and the thermal imager camera are both mounted on a mobile assembly, and the thermal imager and the thermal imager camera are electrically connected, the thermal imager display screen is remotely electrically connected to the thermal imager and the thermal imager camera, the thermal imager display screen is located in the hands of a staff member, and the mobile assembly, the thermal imager and the thermal imager camera can form a whole;

[0049] From the above, we can see that the use of thermal imagers to detect crack defects on the surface of roads and bridges has the following benefits:

[0050] Thermal imagers can accurately detect crack defects by capturing the thermal radiation energy on the surface of roads and bridges and converting it into temperature distribution images. Since there is a difference in thermal radiation energy between cracks and intact parts, thermal imagers can clearly show the location, shape and size of cracks, providing an accurate basis for subsequent maintenance and protection work.

[0051] Thermal imagers have a wide detection range, covering the entire surface of roads and bridges, including hidden parts that are difficult to observe directly. This enables inspectors to fully and carefully understand the crack conditions of roads and bridges, and promptly discover and deal with potential safety hazards;

[0052] Thermal imagers use a non-contact detection method, which does not require direct contact with the surface of roads and bridges, thus avoiding damage or contamination that may be caused by contact in traditional detection methods. At the same time, this non-contact detection method also improves the safety of detection personnel and reduces work risks;

[0053] Thermal imagers have a very fast detection speed and can complete a comprehensive inspection of the road and bridge surface in a short time. This not only improves the detection efficiency, but also reduces the time of traffic interruption due to detection and reduces the impact on traffic operation.

[0054] Thermal imagers can present the detected temperature distribution images in an intuitive and clear way, allowing inspectors to intuitively see the location and distribution of cracks. This data visualization method helps inspectors better understand the characteristics and laws of cracks, providing strong support for subsequent analysis and processing;

[0055] Compared with traditional detection methods, thermal imagers are less affected by the external environment (such as light, humidity, etc.), which enables thermal imagers to maintain high detection accuracy and stability even in complex and changing environments.

[0056] In summary, thermal imagers have many advantages in detecting surface crack defects on roads and bridges, including high detection accuracy, wide detection range, non-contact detection, fast detection speed, data visualization, and little influence from the external environment.

[0057] Using the remote control component, the staff can move the thermal imager and thermal imager camera installed on the mobile component, so that the staff can carry out mobile detection of crack defects on the surface of roads and bridges. The data after the detection is completed will be displayed on the display screen;

[0058] Installing thermal imagers on mobile components to detect crack defects on the surface of roads and bridges has the following benefits:

[0059] Mobile thermal imaging inspection can quickly cover large areas of roads and bridges. Compared with traditional manual inspection or fixed-point inspection, it greatly improves inspection efficiency. Inspectors do not need to check each part one by one, but can quickly scan the entire road and bridge surface with the thermal imager on the mobile component to find crack defects in time.

[0060] Traditional inspection methods require inspectors to directly contact the surface of roads and bridges, which poses certain safety risks. However, installing thermal imagers on mobile components for inspection does not require inspectors to directly contact roads and bridges, greatly reducing safety risks. At the same time, mobile components can also provide a stable inspection platform to reduce inspection errors caused by human factors.

[0061] Roads and bridges are often located in complex environments, such as mountains, rivers, and highways. Traditional detection methods may be limited in these environments, while mobile thermal imaging detection can flexibly cope with various complex environments. Mobile components can carry thermal imagers and travel on uneven roads, and can even perform detection at night or in low light conditions, greatly improving the flexibility and adaptability of detection;

[0062] Thermal imaging can reduce the overall inspection cost. Due to its high inspection efficiency and accuracy, it can reduce the number of repeated inspections and repairs, thereby reducing inspection and maintenance costs. At the same time, mobile inspection can also reduce economic losses caused by traffic interruptions or lane closures.

[0063] Mobile thermal imaging detection can record detection data in real time and generate intuitive images and video data. These data can be used for subsequent data analysis and processing, helping engineers to better understand the cracks of roads and bridges and develop targeted repair and protection plans. At the same time, these data can also be saved as historical data to provide a reference for future detection and maintenance.

[0064] In summary, installing thermal imagers on mobile components to detect surface crack defects on roads and bridges has many benefits, including improving detection efficiency, enhancing detection accuracy, ensuring the safety of detection personnel, adapting to complex environments, reducing detection costs, and facilitating data recording and analysis. This detection method will provide strong support for the safe operation and maintenance of roads and bridges.

[0065] A classification module, used to classify, collect and save the causes of crack defects on the road and bridge surfaces, wherein the classification module is located inside the display screen of the thermal imager;

[0066] The present invention further specifically describes that a data acquisition module is provided inside the display screen for collecting data on crack defects on the surface of roads and bridges. The causes of the crack defects on the surface of roads and bridges are limitations of design theory, insufficient structural bearing capacity, improper construction technology, improper installation of steel mesh and concrete construction problems. The construction method of the road bridge surface crack defect classification module includes the following steps: collecting original bridge images containing various types of road bridge surface crack defects, crack marking and crack segmentation of the collected original road bridge surface crack defect images to construct a sample data set of road bridge surface crack defects;

[0067] From the above, we can see that classifying the different causes of surface crack defects on roads and bridges has the following benefits:

[0068] By classifying the causes of crack defects, the specific causes of cracks can be diagnosed more accurately, which helps engineers and maintenance personnel locate problems more accurately and take more effective repair measures;

[0069] Understanding the different causes of crack defects can help designers and construction personnel take targeted preventive measures during the design and construction process. For example, for cracks caused by temperature changes, more reasonable structural forms and material selections can be considered during design to reduce the impact of temperature stress. In terms of construction, construction quality control can be strengthened to ensure the standardization and rationality of construction technology, thereby reducing the occurrence of cracks caused by construction factors.

[0070] The classification of the causes of crack defects can also guide maintenance and protection work. Different repair measures are required for different crack causes. For example, for cracks caused by steel corrosion, rust removal, rust prevention and reinforcement measures are required; for cracks caused by concrete shrinkage, measures such as strengthening concrete maintenance and controlling concrete mix ratio are required. By classifying the causes of cracks, more targeted maintenance and protection plans can be formulated to improve maintenance efficiency and quality.

[0071] By classifying and diagnosing the causes of crack defects, potential safety hazards can be discovered and dealt with in a timely manner, improving the safety and durability of roads and bridges, which helps reduce traffic accidents and casualties caused by cracks, while extending the service life of roads and bridges and reducing maintenance and replacement costs;

[0072] The classification of the causes of crack defects can also promote scientific research and technological progress. Through in-depth research and discussion on cracks caused by different reasons, it can promote the development of scientific research and technology in related fields and provide more advanced and effective technical means for the construction and maintenance of roads and bridges.

[0073] In summary, classifying the different causes of surface crack defects on roads and bridges has many benefits, including improving diagnostic accuracy, optimizing design and construction, guiding maintenance and protection, improving safety and durability, and promoting scientific research and technological progress. Therefore, in actual engineering, the research and classification of the causes of crack defects should be strengthened to better ensure the safety and durability of roads and bridges.

[0074] Furthermore, this design application is used to detect surface crack defects on roads and bridges. Compared with traditional detection methods, thermal imagers are less affected by the external environment (such as light, humidity, etc.), which enables thermal imagers to maintain high detection accuracy and stability even in complex and changing environments, thereby improving the work efficiency of staff in detecting surface crack defects on roads and bridges.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for detecting crack defects on the surface of a road bridge, characterized in that: include: A mobile component is used for mobile detection of crack defects on the surface of a road or bridge, and the mobile component comprises a mobile component; A detection module, used to detect crack defects on the surface of roads and bridges, the detection module comprising a thermal imager, a thermal imager camera and a thermal imager display screen; The classification module is used to classify, collect and save the causes of crack defects on the surface of the road bridge, and the classification module is located inside the display screen of the thermal imager.

2. A road bridge surface crack defect detection method according to claim 1, characterized in that: The mobile component is provided with a remote control component.

3. A road bridge surface crack defect detection method according to claim 1, characterized in that: The thermal imager and the thermal imager camera are both installed on the mobile component, and the thermal imager and the thermal imager camera are electrically connected.

4. A road bridge surface crack defect detection method according to claim 1, characterized in that: The thermal imager display screen is located in the hands of the worker.

5. A road bridge surface crack defect detection method according to claim 1, characterized in that: The causes of the surface crack defects of the road bridge are the limitations of design theory, insufficient structural bearing capacity, improper construction technology, improper installation of steel mesh and concrete construction problems.

6. A road bridge surface crack defect detection method according to claim 1, characterized in that: The method for constructing the road bridge surface crack defect classification module includes the following steps: collecting original bridge images containing various types of road bridge surface crack defects, and performing crack marking and crack segmentation on the collected original road bridge surface crack defect images to construct a sample data set of road bridge surface crack defects.

7. A road bridge surface crack defect detection method according to claim 1, characterized in that: The mobile component, the thermal imager and the thermal imager camera can form a whole.

8. A road bridge surface crack defect detection method according to claim 1, characterized in that: A data acquisition module is provided inside the display screen for collecting data on crack defects on the surfaces of roads and bridges.

9. A road bridge surface crack defect detection method according to claim 2, characterized in that: The mobile component is remotely controlled by a worker via a remote control component.

10. A road bridge surface crack defect detection method according to claim 1, characterized in that: The thermal imager display screen is remotely electrically connected to the thermal imager and the thermal imager camera.

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