Rapid assembling structure and assembling method for box girder of modular curved ramp bridge

Abstract

The invention provides a rapid assembling structure and method for a modular bent ramp bridge box girder, and belongs to the technical field of bridge construction.The rapid assembling structure comprises a box girder, an upper connecting piece is arranged on the upper portion of the box girder, the upper connecting piece comprises a connecting plate and a connecting frame, elastic plates are arranged on the two sides of the connecting plate, protruding blocks are fixed to the outer ends of the elastic plates, and the protruding blocks are connected with the connecting frame. Through grooves matched with the protruding blocks are formed in the two sides of the connecting frame, the lower connecting structure is arranged on the side face of the lower portion of the box girder and comprises a connecting column and two clamping plates, reinforcing assemblies are arranged between the protruding parts and the clamping plates, and each reinforcing assembly comprises a motor box, a gear, a rack and a push rod. The box girder assembly control system is used for monitoring the box girder in the box girder assembly process and controlling the reinforcing assembly, and solves the problems of long construction period, high labor intensity, much field welding operation and large potential safety hazard in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to a modular curved ramp bridge box girder rapid assembly structure and an assembly method. Background Art

[0002] In the process of rapid urbanization, transportation infrastructure, especially bridge engineering, is an important part of supporting urban development. Curved ramp bridges have been widely used in highways and urban overpasses because they can effectively solve the connection problem of transportation hubs. This bridge structure can adapt to complex traffic routes and improve the efficiency and safety of road networks.

[0003] Although curved ramp bridges play an important role in transportation engineering, traditional construction methods have the following problems and challenges:

[0004] Traditional box girder construction methods often require a long preparation and construction time, which prolongs the entire project cycle. A large amount of manpower is required during the construction process, which results in high labor intensity and low work efficiency. On-site welding is essential in bridge construction, and the welding quality is affected by the on-site environment and the skill level of the workers, making it difficult to ensure consistency and construction quality. Therefore, a modular curved ramp bridge box girder rapid assembly structure and assembly method are designed. Summary of the invention

[0005] The embodiments of the present invention provide a modular curved ramp bridge box girder rapid assembly structure and assembly method, which solve the problems of long traditional construction period, high labor intensity, many on-site welding operations, and greater safety hazards.

[0006] In view of the above problems, the technical solution proposed by the present invention is:

[0007] The present invention provides a modular curved ramp bridge box girder rapid assembly structure, comprising a box girder, an upper connecting member is arranged on the upper part of the box girder, the upper connecting member comprises a connecting plate and a connecting frame, elastic plates are arranged on both sides of the connecting plate, a protruding block is fixed on the outer end of the elastic plate, and through grooves adapted to the protruding block are opened on both sides of the connecting frame;

[0008] A lower connecting structure, the lower connecting structure is arranged on the lower side of the box beam, the lower connecting structure includes a connecting column and two clamping plates, the upper end of the connecting column is provided with a protrusion, the upper surface of the clamping plate is provided with a notch adapted to the protrusion, a protrusion is fixed to the inner side of the bottom of the clamping plate, grooves adapted to the protrusion are provided on both sides of the bottom close to the connecting column, and mounting blocks are provided at the rear ends of the two clamping plates;

[0009] A reinforcing assembly is provided between the protruding portion and the clamping plate, the reinforcing assembly is embedded in the box beam, and the reinforcing assembly includes a motor box, a gear, a rack and a push rod, the gear is installed at the output end of the motor box, the rack is arranged at the upper end of the gear, and the push rod is arranged at the front end of the rack;

[0010] A box girder assembly control system is used to monitor the box girder and control the reinforcement components during the box girder assembly process.

[0011] As a preferred technical solution of the present invention, the connecting plate and the elastic plate are both screwed to one side of the box beam, and a mounting groove is provided on the other side of the box beam. The connecting frame is arranged in the mounting groove, and a guide plate is fixed inside the connecting frame. A guide groove matching the guide plate is provided on the surface of the connecting plate. A fastening screw is arranged between the connecting frame and the connecting plate, and a fixing nut matching the fastening screw is embedded in the inner bottom of the connecting frame. The fastening screw passes through the box beam, the connecting frame and the connecting plate, and is threadably matched with the fixing nut.

[0012] As a preferred technical solution of the present invention, the connecting column is screwed to one side of the box beam, the clamping plate and the mounting block are arranged inside the other side of the box beam, and there is a gap between the clamping plate and the box beam, the mounting block is screwed to the inside of the box beam, a through rod is arranged between the rear end of the clamping plate and the mounting block, the through rod penetrates the clamping plate and the mounting block, a torsion spring is surrounded on the outside of the through rod, and both ends of the torsion spring are respectively plugged into the clamping plate and the mounting block.

[0013] As a preferred technical solution of the present invention, a motor is installed inside the motor box, and the output end of the motor passes through the motor box and is screwed to the gear, the gear is meshed with the rack, the push rod is an electric push rod, and a movable groove for the movement of the reinforcement assembly is provided inside the box beam, a reinforcement block is fixed to the front end of the push rod, the reinforcement block is made of rubber, and the surfaces of the raised portion and the clamping plate are provided with reinforcement holes that are adapted to the reinforcement block, a fixing column is clamped on one side of the rack, the fixing column is fixed to the upper end of the motor box, the upper end of the fixing column is connected to a guide wheel, and the upper surface of the rack is provided with the guide groove that is adapted to the guide wheel.

[0014] As a preferred technical solution of the present invention, the box girder assembly control system includes a wireless sensor network module, a wireless communication module, a data processing module, a drone monitoring module and a control module;

[0015] The wireless sensor network module uses a variety of sensors to monitor the assembly of the box girder, and establishes and optimizes the sensor communication path based on the ant colony algorithm;

[0016] The wireless communication module is used to transmit sensor data to the box girder assembly control system, such as ZigBee, Wi-Fi, LoRa, etc.;

[0017] The data processing module is used to collect monitoring data from sensors and process the data;

[0018] The drone monitoring module uses a drone and an infrared thermal imager installed on the drone to monitor the box girder, and the drone monitoring module includes an image capture unit and an infrared thermal imager unit;

[0019] The image capture unit uses a camera on the drone to capture a high-definition image of the box girder for visual inspection;

[0020] The infrared thermal imager unit uses an infrared thermal imager to perform a thermal map analysis on the box girder to find hot spots of the box girder;

[0021] The control module includes a motor control unit, a push rod automatic movement unit and a micro switch;

[0022] The motor control unit is used to control the use of the motor in the motor box;

[0023] The push rod automatic moving unit is used to control the extension and retraction of the push rod;

[0024] The micro switch is used as a trigger unit to trigger the use of the motor and the push rod when the clamping plate completes clamping of the connecting column.

[0025] As a preferred technical solution of the present invention, the detailed processing steps of the wireless sensor network module for communication path optimization are as follows:

[0026] Step 1: Determine the number of ants participating in the path search, determine the weights of pheromones and heuristic information in path selection, control the evaporation rate of pheromones, determine the amount of pheromones left by ants on the path, and initialize the pheromone and node information of all paths;

[0027] Step 2: Each ant selects a path based on probability, records the path, and communicates with nodes;

[0028] Step 3: The pheromones on all paths evaporate according to the evaporation coefficient, and the paths that the ants walk on leave pheromones, and the enhancement amount is proportional to the quality of the path;

[0029] Step 4: Calculate the total energy consumption, delay, and stability indicators of the path constructed by each ant. According to the evaluation results, select the path with the lowest energy consumption as the optimized path, and perform additional enhancement on the pheromone on the optimized path to guide subsequent ants to choose this path. Output the optimized path and its corresponding performance indicators.

[0030] As a preferred technical solution of the present invention, the detailed steps of the image capture unit using the YOLO algorithm to identify defects in the image of the box girder taken by the drone are as follows:

[0031] Step a: collect box girder images taken by drones, manually annotate the locations and categories of defects using annotation tools, adjust image resolution, and perform data enhancement;

[0032] Step b: Select a suitable YOLO model, set model parameters, use labeled image data for training, evaluate the trained model, and adjust and optimize the model parameters based on the evaluation results;

[0033] Step c, integrating the trained model into the box girder assembly control system to perform defect identification in real time;

[0034] Step d: Set up communication between the drone and the box girder assembly control system, use the integrated YOLO model to detect the real-time image, and issue an alarm when defects are identified.

[0035] As a preferred technical solution of the present invention, the detailed steps of the infrared thermal imager unit performing thermal image analysis are as follows:

[0036] Step A, using an infrared thermal imager to collect a temperature distribution image of the box girder structure, and preprocessing the image;

[0037] Step B, setting a normal temperature range and an abnormal temperature threshold according to the material and structural characteristics of the box girder;

[0038] Step C, select appropriate clustering parameters, mark all points as unvisited, calculate the number of points in the neighborhood radius of each point, start from an unvisited core point, create a new cluster, visit all points in the neighborhood of the core point, and add them to the cluster. Points not in any cluster are marked as noise points;

[0039] Step D, analyzing the characteristics of each cluster, hot spots are high-density areas, and points in a cluster may represent hot spots. The quality of the clustering results is evaluated, and the significance of the clustering results to the box girder is explained.

[0040] On the other hand, a method for assembling a modular curved ramp bridge box girder rapid assembly structure comprises the following steps:

[0041] S1, after the cap beam construction is completed, the formwork is removed, the box beam is transported to the corresponding bridge span to be installed through the access road, and the box beam is lifted to the pre-installation location by a truck crane;

[0042] S2, aligning the upper connecting plates and the connecting frames of the adjacent box beams, inserting and fixing them, and inserting the connecting columns into the clamping plates, and clamping them by using the torsion springs;

[0043] S3, after the preliminary assembly is completed, the wireless sensor network and the drone monitoring module are started to monitor the assembly process in real time and adjust the assembly work of the box girder in time;

[0044] S4, then, a trigger signal is sent through the micro switch to start the motor and the push rod, push the reinforcement block, and strengthen the connection between the connecting column and the clamping plate. After the assembly is completed, the assembled box beam is synchronously and slowly dropped to the target position by the hoisting equipment, and then the upper connection structure is reinforced by the fastening screw;

[0045] S5, during which the curvature of the box girder and the connecting structure can be adjusted according to the curvature to meet the requirements of the box girder of the curved ramp bridge;

[0046] S6, after all assembly steps are completed, final inspection and acceptance is carried out.

[0047] Compared with the prior art, the beneficial effects of the present invention are:

[0048] (1) The present invention adopts a modular design for the box girder, and only simple assembly is required at the construction site, which greatly shortens the construction period and improves the construction efficiency. The box girder is reinforced by fastening screws and automated reinforcement components, which are combined with the traditional manual fastening method to improve efficiency and safety.

[0049] (2) The present invention provides a more comprehensive construction monitoring method by combining wireless sensor networks and drone monitoring. The wireless sensor network based on the ant colony algorithm optimizes the communication path, reduces energy consumption, and extends the network life. The YOLO algorithm and infrared thermal imager are used for defect identification and thermal map analysis, thereby improving the efficiency and accuracy of quality monitoring.

[0050] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1It is a schematic diagram of a box girder disassembly structure of a modular curved ramp bridge box girder rapid assembly structure disclosed in the present invention;

[0052] Figure 2 It is a schematic diagram of the structure of part A of a box girder disassembly structure schematic diagram of a modular curved ramp bridge box girder rapid assembly structure disclosed in the present invention;

[0053] Figure 3 It is a schematic diagram of the disassembled structure of the lower connection structure of a modular curved ramp bridge box girder rapid assembly structure disclosed in the present invention;

[0054] Figure 4 It is a schematic diagram of the overall structure of a reinforcement component of a modular curved ramp bridge box girder rapid assembly structure disclosed in the present invention;

[0055] Figure 5 It is a cross-sectional schematic diagram of the upper part of a box girder assembly state of a modular curved ramp bridge box girder rapid assembly structure disclosed by the present invention;

[0056] Figure 6 It is a schematic diagram of the lower section structure of a box girder assembly state of a modular curved ramp bridge box girder rapid assembly structure disclosed by the present invention;

[0057] Figure 7 It is a structural schematic diagram of part B of the lower section structural schematic diagram of a box girder assembly state of a modular curved ramp bridge box girder rapid assembly structure disclosed in the present invention;

[0058] Figure 8 It is a block diagram of a box girder assembly control system of a modular curved ramp bridge box girder rapid assembly structure disclosed in the present invention;

[0059] Fig. 9 It is a schematic flow chart of an assembly method of a modular curved ramp bridge box girder rapid assembly structure disclosed in the present invention;

[0060] Description of reference numerals: 100, box beam; 101, mounting groove;

[0061] 200, upper connection structure; 201, connection plate; 202, connection frame; 203, guide groove; 204, elastic plate; 205, protruding block; 206, guide plate; 207, fastening screw; 208, fixing nut; 209, through groove;

[0062] 300, lower connecting structure; 301, connecting column; 302, clamping plate; 303, protrusion; 304, notch; 305, convex block; 306, groove; 307, mounting block; 308, through rod; 309, torsion spring; 3010, reinforcement hole;

[0063] 400, reinforcement assembly; 401, motor box; 402, fixing column; 403, gear; 404, rack; 405, push rod; 406, reinforcement pad; 407, guide wheel;

[0064] 500. Box girder assembly control system; 501. Wireless sensor network module; 502. Wireless communication module; 503. Data processing module; 504. UAV monitoring module; 5041. Image capture unit; 5042. Infrared thermal imager unit; 505. Control module; 5051. Motor control unit; 5052. Push rod automatic movement unit; 5053. Micro switch. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0066] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0067] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0070] Embodiment 1

[0071] Refer to the attached Figure 1-8 As shown, the present invention provides a technical solution: a modular curved ramp bridge box girder 100 quick assembly structure, comprising a box girder 100, an upper connecting member is arranged on the upper part of the box girder 100, and the upper connecting member comprises a connecting plate 201 and a connecting frame 202, elastic plates 204 are arranged on both sides of the connecting plate 201, and a protruding block 205 is fixed on the outer end of the elastic plate 204, and through grooves 209 adapted to the protruding block 205 are opened on both sides of the connecting frame 202;

[0072] The lower connecting structure 300 is arranged on the lower side of the box beam 100. The lower connecting structure 300 includes a connecting column 301 and two clamping plates 302. A protrusion 303 is arranged on the upper end of the connecting column 301. A notch 304 adapted to the protrusion 303 is provided on the upper surface of the clamping plate 302. A protrusion 305 is fixed to the inner side of the bottom of the clamping plate 302. Grooves 306 adapted to the protrusion 305 are provided on both sides of the bottom close to the connecting column 301. A mounting block 307 is provided at the rear ends of the two clamping plates 302.

[0073] A reinforcing assembly 400 is provided between the protruding portion 303 and the clamping plate 302. The reinforcing assembly 400 is embedded in the box beam 100. The reinforcing assembly 400 includes a motor box 401, a gear 403, a rack 404 and a push rod 405. The gear 403 is installed at the output end of the motor box 401, the rack 404 is arranged at the upper end of the gear 403, and the push rod 405 is arranged at the front end of the rack 404.

[0074] The box girder assembly control system 500 is used to monitor the box girder 100 and control the reinforcement assembly 400 during the assembly process of the box girder 100 .

[0075] The embodiment of the present invention is also implemented through the following technical solutions.

[0076] In the embodiment of the present invention, the connecting plate 201 and the elastic plate 204 are screwed to one side of the box beam 100, and the other side of the box beam 100 is provided with a mounting groove 101, and the connecting frame 202 is arranged in the mounting groove 101, so that the upper parts of the adjacent box beams 100 are connected by inserting the connecting plate 201 and the elastic plate 204 into the connecting frame 202, and a guide plate 206 is fixed inside the connecting frame 202, and a guide groove 203 adapted to the guide plate 206 is provided on the surface of the connecting plate 201, and the guide plate 206 is connected to the guide groove 203 makes the connection plate 201 more accurate when inserted into the connection frame 202. A fastening screw 207 is arranged between the connection frame 202 and the connection plate 201. A fixing nut 208 adapted to the fastening screw 207 is embedded in the inner bottom of the connection frame 202. The fastening screw 207 passes through the box girder 100, the connection frame 202 and the connection plate 201, and is threadedly matched with the fixing nut 208. After the connection plate 201 and the elastic plate 204 are fully inserted into the connection frame 202, the fastening screw 207 is used to pass through the three and fixed by the fixing nut 208.

[0077] Specifically, when assembling the box beam 100, the upper part of the adjacent box beams 100 aligns the connecting plate 201 with the connecting frame 202, and the connecting plate 201 moves along the guide plate 206 in the connecting frame 202 through the guide groove 203. At the same time, the protruding block 205 at the end of the elastic plate 204 is designed to be arc-shaped, which is convenient for the protruding block 205 to move in and out along the arc. After the front ends of the two elastic plates 204 enter the connecting frame 202, they are squeezed and enter the connecting frame 202. When passing through the through groove 209, the protruding block 205 pops out and gets stuck on both sides of the connecting frame 202. After the lower part of the box beam 100 is also assembled, the fastening screw 207 is manually screwed in between the connecting plate 201 and the connecting frame 202 to achieve the reinforcement of the upper connecting structure 200.

[0078] In an embodiment of the present invention, the connecting column 301 is screwed to one side of the box beam 100, the clamping plate 302 and the mounting block 307 are arranged inside the other side of the box beam 100, and the adjacent box beams 100 can be inserted into the connecting frame 202 through the connecting column 301 based on the installation position, and there is a gap between the clamping plate 302 and the box beam 100, and the gap provides space for the clamping plate 302 to expand, and the mounting block 307 is screwed to the inside of the box beam 100, and a through rod 308 is arranged between the rear end of the clamping plate 302 and the mounting block 307, and the through rod 308 is inserted into the through rod 308. The rod 308 penetrates the clamping plate 302 and the mounting block 307. The clamping plate 302 and the mounting block 307 are connected together by simultaneously penetrating the clamping plate 302 and the mounting block 307. A torsion spring 309 is surrounded on the outer side of the penetrating rod 308. The two ends of the torsion spring 309 are respectively plugged into the clamping plate 302 and the mounting block 307. When the connecting column 301 is inserted between the clamping plates 302, the clamping plates 302 will be stretched open. Based on the action force of the torsion spring, the clamping plates 302 will be squeezed inward and tightly attached to the two sides of the connecting column 301.

[0079] Specifically, when the upper part of the box beam 100 is connected, the connecting column 301 at the lower part of the adjacent box beam 100 is aligned with the clamping plate 302, and the connecting column 301 is inserted between the clamping plates 302. The clamping plate 302 is installed inside the box beam 100 through the mounting block 307. The groove 306 of the lower part of the connecting column 301 is aligned with the protrusion 305 at the end of the clamping plate 302. The protrusion 305 slides in the groove 306 to play a guiding role. When entering the clamping plate 302, the clamping plate 302 rotates on the outer surface of the through rod 308 and is stretched open. Under the action of the torsion spring 309, the clamping plate 302 clamps the connecting column 301. After the clamping plate 302 is completely connected to the connecting column 301, the protrusion 303 on the upper part of the connecting column 301 is made of elastic material, so that the protrusion 303 will be squeezed when entering the clamping plate 302, and pop out when encountering the notch 304, and get stuck on the clamping plate 302 to limit the position.

[0080] In the embodiment of the present invention, a motor is installed inside the motor box 401, and the output end of the motor passes through the motor box 401 and is screwed to the gear 403. The gear 403 is meshed with the rack 404. The motor in the motor box 401 controls the gear 403 to rotate, and the rotation of the gear 403 controls the upper rack 404 to move back and forth. The push rod 405 is an electric push rod 405. An active groove for the movement of the reinforcement component 400 is opened inside the box beam 100. The active groove facilitates the movement of the reinforcement component 400 in the box beam 100, and the reinforcement component 400 is on the same side as the clamping plate 302. A reinforcement block is fixed to the front end of the push rod 405. The reinforcement block is made of rubber. The material of the reinforcement block facilitates its extrusion. The surfaces of the protrusion 303 and the clamping plate 302 are provided with reinforcement holes 3010 adapted to the reinforcement block. The reinforcement hole 3010 allows the reinforcement block to pass through the connecting column 301 and the clamping plate 302, thereby reinforcing the connection between the connecting column 301 and the clamping plate 302. A fixing column 402 is clamped on one side of the rack 404, and the fixing column 402 is fixed to the upper end of the motor box 401. The rack 404 is stabilized by the fixing column 402, and the rack 404 moves while moving on the inner side of the fixing column 402. The design of the convex strip and the groove 306 can be used for clamping and sliding. A guide wheel 407 is connected to the upper end of the fixing column 402, and a guide groove 203 adapted to the guide wheel 407 is provided on the upper surface of the rack 404. The guide wheel 407 is suspended on the upper end of the fixing column 402 by a bolt and rotates on the outer surface of the bolt. The movement of the rack 404 is guided by the cooperation of the guide wheel 407 and the guide groove 203.

[0081] Specifically, two opposing reinforcement assemblies 400 are arranged inside the same box girder 100. By installing a micro switch 5053 on the inner side of the innermost end of the clamping plate 302 or the outer side of the rearmost end of the connecting column 301, after the connecting column 301 is fully connected with the clamping plate 302, the micro switch 5053 will detect the pressure and send a signal to the box girder assembly control system 500, and the motor control unit 5051 and the push rod automatic moving unit 5052 will control the inward movement, and the push rod 405 will continue to move and penetrate the connecting column 301. 01 and the clamping plate 302, the clamping of the clamping plate 302 and the connecting column 301 is strengthened to avoid the failure of the spring causing the failure of the connection between the connecting column 301 and the clamping plate 302, until the two opposite reinforcement blocks at the front end abut, and the abutment is monitored by installing a micro switch 5053 on the front side of the reinforcement block until the micro switch 5053 is triggered. After the micro switch is triggered, a signal is sent to the box girder assembly control system 500, and the box girder assembly control system 500 immediately stops driving the push rod 405 and the motor after receiving the signal.

[0082] It should be noted that since the reinforcement block is made of rubber material, it can be squeezed through the clamping plate 302 and the connecting column 301 when pushed by the push rod 405. However, it should be noted that the size of the reinforcement hole 3010 needs to be larger than the micro switch 5053 so that the micro switch 5053 cannot be squeezed. It should also be considered that the squeezing force of the reinforcement block cannot exceed the operating force of the micro switch 5053. If the squeezing force on the reinforcement block is not sufficient to reach the operating force of the micro switch 5053, the micro switch 5053 will not monitor the pressure, thereby ensuring the monitoring accuracy of the micro switch 5053.

[0083] In an embodiment of the present invention, the box girder assembly control system 500 includes a wireless sensor network module 501, a wireless communication module 502, a data processing module 503, a drone monitoring module 504 and a control module 505;

[0084] The wireless sensor network module 501 uses a variety of sensors to monitor the assembly of the box girder 100, and establishes and optimizes the sensor communication path based on the ant colony algorithm;

[0085] The wireless communication module 502 is used to transmit the sensor data to the box girder assembly control system 500, such as ZigBee, Wi-Fi, LoRa, etc.;

[0086] The data processing module 503 is used to collect the monitoring data of the sensor and process the data, including filtering, noise reduction, normalization and other conventional processing of the data;

[0087] The drone monitoring module 504 uses a drone and an infrared thermal imager installed on the drone to monitor the box girder 100. The drone monitoring module 504 includes an image capture unit 5041 and an infrared thermal imager unit 5042.

[0088] The image capture unit 5041 uses the camera on the drone to capture high-definition images of the box girder 100 for visual inspection;

[0089] The infrared thermal imager unit 5042 uses an infrared thermal imager to perform a thermal image analysis on the box girder 100 to find hot spots of the box girder 100;

[0090] A control module 505, the control module 505 includes a motor control unit 5051, a push rod automatic moving unit 5052 and a micro switch 5053;

[0091] The motor control unit 5051 is used to control the use of the motor in the motor box 401;

[0092] The push rod automatic moving unit 5052 is used to control the extension and retraction of the push rod 405;

[0093] The micro switch 5053 is used as a trigger unit to trigger the use of the motor and the push rod 405 when the clamping plate 302 completes clamping the connecting column 301.

[0094] In the embodiment of the present invention, the detailed processing steps of the wireless sensor network module 501 for optimizing the communication path are as follows:

[0095] Step 1: Determine the number of ants participating in the path search, determine the weights of pheromones and heuristic information in path selection, control the evaporation rate of pheromones, determine the amount of pheromones left by ants on the path, and initialize the pheromone and node information of all paths;

[0096] Step 2: Each ant selects a path based on probability, records the path, and communicates with nodes;

[0097] Step 3: The pheromones on all paths evaporate according to the evaporation coefficient, and the paths that the ants walk on leave pheromones, and the enhancement amount is proportional to the quality of the path;

[0098] Step 4: Calculate the total energy consumption, delay, stability and other indicators of the path constructed by each ant. According to the evaluation results, select the path with the minimum energy consumption as the optimized path, and perform additional enhancement on the pheromone on the optimized path to guide subsequent ants to choose this path. Output the optimized path and its corresponding performance indicators, such as minimum energy consumption, shortest path length, etc.;

[0099] Step 5: Repeat steps 2 to 4 until the preset number of iterations is reached or a satisfactory solution is found.

[0100] In the embodiment of the present invention, the detailed steps of the image capturing unit 5041 using the YOLO algorithm to perform defect recognition on the image of the box girder 100 taken by the drone are as follows:

[0101] Step a, collecting images of the box girder 100 taken by the drone, manually annotating the locations and categories of defects using annotation tools, adjusting the image resolution, and performing data enhancement, including rotation, scaling, flipping, etc.;

[0102] Step b, select a suitable YOLO model, set model parameters, including the number of categories, anchor point size, confidence threshold, etc., use the labeled image data for training, evaluate the trained model, and adjust and optimize the model parameters according to the evaluation results;

[0103] Step c, integrating the trained model into the box girder assembly control system 500 to perform defect identification in real time;

[0104] Step d: Set up the communication between the drone and the box girder assembly control system 500 to ensure real-time image transmission, use the integrated YOLO model to detect the real-time image, and issue an alarm when defects are identified.

[0105] In the embodiment of the present invention, the detailed steps of the infrared thermal imager unit 5042 performing thermal image analysis are as follows:

[0106] Step A, using an infrared thermal imager to collect a temperature distribution image of the box beam 100 structure, and preprocessing the image, applying a filtering algorithm to remove random noise in the image, such as median filtering, Gaussian filtering, using contrast enhancement, histogram equalization and other methods to improve the clarity and readability of the image, and correcting the image to eliminate the influence of lens distortion and temperature gradient;

[0107] Step B, setting a normal temperature range and an abnormal temperature threshold according to the material and structural characteristics of the box beam 100;

[0108] Step C, select appropriate clustering parameters, such as the neighborhood radius determines the size of the neighborhood around a point. If the neighborhood radius is too large, it may cause multiple clusters to merge. If it is too small, it may cause the cluster to be split, or the minimum number of samples defines the minimum number of points required for a cluster. The selection of the minimum number of samples depends on the density of the data. Mark all points as unvisited, calculate the number of points in the neighborhood radius of each point, if the number is greater than or equal to the minimum number of samples, then the point is a core point, start from an unvisited core point, create a new cluster, visit all points in the neighborhood of the core point, and add them to the cluster. If there are core points among these points, continue to visit their direct density reachable points. Points not in any cluster are marked as noise points;

[0109] Step D, analyzing the characteristics of each cluster, such as the shape, size, and location of the cluster. A hot spot is a high-density area, and the points in the cluster may represent a hot spot area. Evaluate the quality of the clustering results, such as using the silhouette coefficient to measure the quality of the clustering. If the result is not ideal, it is necessary to adjust the parameters of DBSCAN (neighborhood radius and minimum number of samples) or reconsider the data preprocessing steps. Explain the significance of the clustering results to the box girder 100, such as which areas may be overheated areas and require further inspection or maintenance;

[0110] Step E, collect thermal map data of box girders at different time points, establish a time series database, track the temperature changes of bridge structures over time, clean and preprocess the time series data, apply time series analysis techniques (such as moving average, autoregressive model) to identify trends in temperature changes, write an analysis report that outlines temperature change trends and potential structural problems, monitor long-term changes in bridge structures, and predict potential risks.

[0111] Embodiment 2

[0112] Refer to the attached Fig. 9 As shown, an embodiment of the present invention further provides an assembly method of a modular curved ramp bridge box girder 100 rapid assembly structure, comprising the following steps:

[0113] S1, after the cap beam construction is completed, the formwork is removed, the box beam 100 is transported to the corresponding bridge span to be installed through the access road, and the box beam 100 is lifted to the pre-installation location by a truck crane;

[0114] S2, align the upper connecting plates 201 and the connecting frames 202 of the adjacent box beams 100, insert and fix them, and at the same time, insert the connecting column 301 into the clamping plate 302, and use the torsion spring 309 to achieve clamping;

[0115] S3, after the initial assembly, the wireless sensor network and the drone monitoring module 504 are started to monitor the assembly process in real time, and the YOLO algorithm and the infrared thermal imager are used to perform defect identification and thermal map analysis, so as to adjust the assembly work of the box beam 100 in time;

[0116] S4, then, a trigger signal is sent through the micro switch 5053 to start the motor and the push rod 405, push the reinforcement block, and strengthen the connection between the connecting column 301 and the clamping plate 302. After the assembly is completed, the assembled box beam 100 is synchronously and slowly dropped to the target position through the hoisting equipment, and then the upper connection structure 200 is reinforced by the fastening screw 207;

[0117] S5, during this process, the curvature of the box girder 100 and the connection structure can be adjusted according to the curvature to meet the requirements of the curved ramp bridge box girder 100;

[0118] S6, after all assembly steps are completed, final inspection and acceptance is carried out.

[0119] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0120] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of protection of the present disclosure. The attached method claims present the elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy described.

[0121] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly stated in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0122] Those skilled in the art will also appreciate that the various illustrative logic blocks, modules, circuits, and algorithmic steps described in conjunction with the embodiments herein can all be implemented as electronic hardware, computer software, or a combination thereof. In order to clearly illustrate the interchangeability between hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above around their functions. Whether such functions are implemented as hardware or software depends on specific applications and the design constraints imposed on the entire system. A skilled person can implement the described functions in an alternative manner for each specific application, but such implementation decisions should not be interpreted as departing from the scope of protection of the present disclosure.

[0123] The steps of the method or algorithm described in conjunction with the embodiments herein may be directly embodied as hardware, a software module executed by a processor, or a combination thereof. The software module may be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a mobile disk, a CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is connected to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The ASIC may be located in a user terminal. Of course, the processor and the storage medium may also be present in a user terminal as discrete components.

[0124] For software implementation, the techniques described in this application can be implemented with modules (e.g., procedures, functions, etc.) that perform the functions described in this application. These software codes can be stored in a memory unit and executed by a processor. The memory unit can be implemented within the processor or outside the processor. In the latter case, it is coupled to the processor in a communication manner via various means, which are well known in the art.

[0125] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

Claims

1. A modular curved ramp bridge box girder (100) rapid assembly structure, characterized in that: The invention comprises a box beam (100), wherein an upper connecting member is arranged on the upper part of the box beam (100), wherein the upper connecting member comprises a connecting plate (201) and a connecting frame (202), elastic plates (204) are arranged on both sides of the connecting plate (201), protruding blocks (205) are fixed on the outer ends of the elastic plates (204), and through grooves (209) adapted to the protruding blocks (205) are opened on both sides of the connecting frame (202); A lower connecting structure (300), the lower connecting structure (300) is arranged on the lower side of the box beam (100), the lower connecting structure (300) comprises a connecting column (301) and two clamping plates (302), the upper end of the connecting column (301) is provided with a protrusion (303), the upper surface of the clamping plate (302) is provided with a notch (304) adapted to the protrusion (303), a convex block (305) is fixed to the inner side of the bottom of the clamping plate (302), grooves (306) adapted to the convex block (305) are provided on both sides of the bottom close to the connecting column (301), and mounting blocks (307) are provided at the rear ends of the two clamping plates (302); A reinforcing assembly (400), wherein a reinforcing assembly (400) is arranged between the protruding portion (303) and the clamping plate (302), wherein the reinforcing assembly (400) is embedded in the box beam (100), and wherein the reinforcing assembly (400) comprises a motor box (401), a gear (403), a rack (404) and a push rod (405), wherein the gear (403) is installed at the output end of the motor box (401), the rack (404) is arranged at the upper end of the gear (403), and the push rod (405) is arranged at the front end of the rack (404); A box girder assembly control system (500) is used to monitor the box girder (100) and control the reinforcement assembly (400) during the assembly process of the box girder (100).

2. A modular curved ramp bridge box girder (100) rapid assembly structure according to claim 1, characterized in that: The connecting plate (201) and the elastic plate (204) are both screwed to one side of the box beam (100); a mounting groove (101) is provided on the other side of the box beam (100); the connecting frame (202) is arranged in the mounting groove (101); a guide plate (206) is fixed inside the connecting frame (202); a guide groove (203) adapted to the guide plate (206) is provided on the surface of the connecting plate (201); a fastening screw (207) is arranged between the connecting frame (202) and the connecting plate (201); a fixing nut (208) adapted to the fastening screw (207) is embedded in the inner bottom of the connecting frame (202); the fastening screw (207) passes through the box beam (100), the connecting frame (202) and the connecting plate (201), and is threadedly matched with the fixing nut (208).

3. A modular curved ramp bridge box girder (100) rapid assembly structure according to claim 2, characterized in that: The connecting column (301) is screwed to one side of the box beam (100), the clamping plate (302) and the mounting block (307) are arranged inside the other side of the box beam (100), and there is a gap between the clamping plate (302) and the box beam (100), the mounting block (307) is screwed to the inside of the box beam (100), a through rod (308) is arranged between the rear end of the clamping plate (302) and the mounting block (307), the through rod (308) penetrates the clamping plate (302) and the mounting block (307), a torsion spring (309) is surrounded on the outside of the through rod (308), and two ends of the torsion spring (309) are respectively plugged into the clamping plate (302) and the mounting block (307).

4. A modular curved ramp bridge box girder (100) rapid assembly structure according to claim 3, characterized in that: A motor is installed inside the motor box (401), the output end of the motor passes through the motor box (401) and is screwed to the gear (403), the gear (403) is meshed with the rack (404), the push rod (405) is an electric push rod (405), a movable groove for the reinforcement component (400) to move is opened inside the box beam (100), a reinforcement block is fixed to the front end of the push rod (405), the reinforcement block is made of rubber, The surfaces of the protruding portion (303) and the clamping plate (302) are provided with reinforcement holes (3010) adapted to the reinforcement block, a fixing column (402) is clamped on one side of the rack (404), the fixing column (402) is fixed to the upper end of the motor box (401), the upper end of the fixing column (402) is connected to a guide wheel (407), and the upper surface of the rack (404) is provided with the guide groove (203) adapted to the guide wheel (407).

5. A modular curved ramp bridge box girder (100) rapid assembly structure according to claim 4, characterized in that: The box girder assembly control system (500) comprises a wireless sensor network module (501), a wireless communication module (502), a data processing module (503), a drone monitoring module (504) and a control module (505); The wireless sensor network module (501) uses a variety of sensors to monitor the assembly work of the box girder (100), and establishes and optimizes the sensor communication path based on the ant colony algorithm; The wireless communication module (502) is used to transmit sensor data to the box girder assembly control system (500), such as ZigBee, Wi-Fi, LoRa, etc.; The data processing module (503) is used to collect monitoring data from the sensor and process the data; The drone monitoring module (504) uses a drone and an infrared thermal imager installed on the drone to monitor the box girder (100), and the drone monitoring module (504) includes an image capture unit (5041) and an infrared thermal imager unit (5042); The image capturing unit (5041) uses a camera on the drone to capture a high-definition image of the box girder (100) for visual inspection; The infrared thermal imager unit (5042) uses an infrared thermal imager to perform a thermal map analysis on the box girder (100) to find hot spots of the box girder (100); The control module (505), the control module (505) comprises a motor control unit (5051), a push rod automatic moving unit (5052) and a micro switch (5053); The motor control unit (5051) is used to control the use of the motor in the motor box (401); The push rod automatic moving unit (5052) is used to control the extension and retraction of the push rod (405); The micro switch (5053) serves as a trigger unit, and is used to trigger the use of the motor and the push rod (405) when the clamping plate (302) completes clamping the connecting column (301).

6. A modular curved ramp bridge box girder (100) rapid assembly structure according to claim 5, characterized in that: The detailed processing steps of the wireless sensor network module (501) for optimizing the communication path are as follows: Step 1: Determine the number of ants participating in the path search, determine the weights of pheromones and heuristic information in path selection, control the evaporation rate of pheromones, determine the amount of pheromones left by ants on the path, and initialize the pheromone and node information of all paths; Step 2: Each ant selects a path based on probability, records the path, and communicates with nodes; Step 3: The pheromones on all paths evaporate according to the evaporation coefficient, and the paths that the ants walk on leave pheromones, and the enhancement amount is proportional to the quality of the path; Step 4: Calculate the total energy consumption, delay, and stability indicators of the path constructed by each ant. According to the evaluation results, select the path with the lowest energy consumption as the optimized path, and perform additional enhancement on the pheromone on the optimized path to guide subsequent ants to choose this path. Output the optimized path and its corresponding performance index.

7. A modular curved ramp bridge box girder (100) rapid assembly structure according to claim 6, characterized in that: The detailed steps of the image capturing unit (5041) using the YOLO algorithm to perform defect recognition on the image of the box girder (100) taken by the drone are as follows: Step a, collecting images of the box girder (100) taken by a drone, manually annotating the locations and categories of defects using an annotation tool, adjusting the image resolution, and performing data enhancement; Step b: Select a suitable YOLO model, set model parameters, use labeled image data for training, evaluate the trained model, and adjust and optimize the model parameters based on the evaluation results; Step c, integrating the trained model into the box girder assembly control system (500) to perform defect identification in real time; Step d, setting up communication between the drone and the box girder assembly control system (500), using the integrated YOLO model to detect the real-time image, and issuing an alarm when a defect is identified.

8. A modular curved ramp bridge box girder (100) rapid assembly structure according to claim 7, characterized in that: The detailed steps of the infrared thermal imager unit (5042) for performing thermal image analysis are as follows: Step A, using an infrared thermal imager to collect a temperature distribution image of the box beam (100) structure, and preprocessing the image; Step B, setting a normal temperature range and an abnormal temperature threshold value according to the material and structural characteristics of the box beam (100); Step C, select appropriate clustering parameters, mark all points as unvisited, calculate the number of points in the neighborhood radius of each point, start from an unvisited core point, create a new cluster, visit all points in the neighborhood of the core point, and add them to the cluster. Points not in any cluster are marked as noise points; Step D, analyzing the characteristic hot spots of each cluster as high-density areas, the points in the cluster may represent hot spots, evaluating the quality of the clustering results, and explaining the significance of the clustering results to the box girder (100).

9. An assembly method of a modular curved ramp bridge box girder (100) rapid assembly structure, applied to a modular curved ramp bridge box girder (100) rapid assembly structure as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1, after the cap beam construction is completed, the formwork is removed, the box beam (100) is transported to the corresponding bridge span to be installed through a walkway, and the box beam (100) is lifted to the pre-installation location by a truck crane; S2, aligning the upper connecting plates (201) and the connecting frames (202) of the adjacent box beams (100), inserting and fixing them, and at the same time inserting the connecting column (301) into the clamping plate (302), and clamping them by using the torsion spring (309); S3, after the preliminary assembly is completed, the wireless sensor network and the drone monitoring module (504) are started to monitor the assembly process in real time and adjust the assembly work of the box beam (100) in a timely manner; S4, then, a trigger signal is sent through the micro switch (5053), the motor and the push rod (405) are started, the reinforcing block is pushed, and the connection between the connecting column (301) and the clamping plate (302) is strengthened. After the assembly is completed, the assembled box beam (100) is synchronously and slowly dropped to the target position through the hoisting equipment, and then the upper connection structure (200) is reinforced by using the fastening screw (207); S5, during which the curvature of the box girder (100) and the connection structure can be adjusted according to the curvature to meet the requirements of the curved ramp bridge box girder (100); S6, after all assembly steps are completed, final inspection and acceptance is carried out.

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