Bridge health detection comprehensive management system

Abstract

The utility model discloses a bridge health detection comprehensive management system which comprises a bridge body, at least two lanes are arranged on the bridge body, grooves are formed in the lanes, the grooves are perpendicular to the driving direction, the length of the grooves is the same as the width of the lanes, at least two grooves are formed in each lane, and the grooves are perpendicular to the driving direction. A piezoelectric sensor and piezoelectric intelligent aggregates are arranged in the grooves, at least one pair of piezoelectric intelligent aggregates is arranged, one set of piezoelectric intelligent aggregates is arranged in one groove, the other set of piezoelectric intelligent aggregates is arranged in the other groove, the pair of piezoelectric intelligent aggregates is electrically connected, a ground sensing coil is arranged between every two adjacent grooves, and the ground sensing coil is electrically connected with the piezoelectric intelligent aggregates. A plurality of solar street lamps are arranged on the side edge of the lane. According to the utility model, the piezoelectric sensor is combined with the ground induction coil, the piezoelectric intelligent aggregate, the solar street lamp and the flexible conductive crack monitoring assembly, and comprehensive and omnibearing real-time detection monitoring management is carried out on bridge monitoring.

Description

Technical Field

[0001] The utility model relates to a comprehensive management system for bridge health detection, belonging to the technical field of bridge health monitoring. Background Technique

[0002] During the construction and use of bridges, due to the erosion of the environment and harmful substances, the effects of vehicles, wind, earthquakes, fatigue, human factors, etc., as well as the continuous degradation of the material's own performance, different degrees of damage and deterioration occur in various parts of the structure long before reaching the design life. If these damages cannot be detected and repaired in time, it will affect traffic safety and shorten the service life of the bridge to a lesser extent, or even lead to the sudden destruction and collapse of the bridge in severe cases. Traditional bridge detection depends to a large extent on assumptions and experience, lacks data support, and is difficult to make scientific decisions. If the disease assessment of the bridge is inaccurate, it is very likely to miss the best opportunity for maintenance, accelerate the process of bridge damage, and shorten the life of the bridge. If the disease assessment of the bridge is too high, it will cause waste of funds. How to accurately monitor the bridge and then timely maintain the bridge is a serious problem.

[0003] The "Method and System for Monitoring Bridge Structure Response" with the application number "CN202110197138.5" aims to obtain historical environmental monitoring data and historical structure response monitoring data; construct a directed graph; train the parameters in the directed graph to obtain a true bridge structure response monitoring model; and monitor the true current bridge structure response according to the true bridge structure response monitoring model and the current environmental monitoring data and current structure response monitoring data. The present invention constructs a directed graph with historical environmental monitoring data as environmental observation variables, historical structure response monitoring data as structure response observation variables, historical environmental true data as environmental latent variables, and historical structure response true data as structure response latent variables, and uses the trained true bridge structure response monitoring model to monitor the true current bridge structure response, which can achieve more accurate monitoring of the true current bridge structure response. It relies on historical information, wastes a large amount of equipment resources, has a complex analysis process, cannot obtain the analysis result in time, and cannot solve the above problems. Content of the Utility Model

[0004] The purpose of the present utility model is to provide a comprehensive management system for bridge health detection. The present utility model forms a piezoelectric axle weight array through piezoelectric sensors and inductive loop sensors. When a heavy-duty vehicle or axle weight array approaches the bridge area, it gives a warning. According to the obtained warning information, timely scheduling is carried out to solve the hidden dangers threatening the bridge. Vehicles are managed according to the alarm information of the system, with strong pertinence and fast processing speed. This not only reduces the workload but also avoids disputes. At the same time, it speeds up the passing speed of the bridge deck; timely solves the "axle weight array" that threatens the main load of the bridge, eliminates all potential accident hazards endangering bridge safety, accumulates big data, provides a health file, and provides a scientific basis for bridge maintenance and repair.

[0005] To solve the above technical problems, the present utility model adopts the following technical solution: A comprehensive management system for bridge health detection, including a bridge body. There are lanes provided on the bridge body, and at least two lanes are provided. Grooves are opened on the lanes, perpendicular to the driving direction. The length of the grooves is the same as the width of the lanes. At least two grooves are provided on each lane. Piezoelectric sensors and piezoelectric intelligent aggregates are arranged in the grooves. At least one pair of piezoelectric intelligent aggregates are provided. One set of piezoelectric intelligent aggregates is placed in one of the grooves, and the other set of piezoelectric intelligent aggregates is placed in another of the grooves. A pair of piezoelectric intelligent aggregates are electrically connected. An inductive loop sensor is arranged between two adjacent grooves. Solar street lights are arranged on the side of the lanes, and multiple solar street lights are provided.

[0006] The aforementioned comprehensive management system for bridge health detection further includes a control device. The piezoelectric sensor is connected to the control device, the piezoelectric sensor is connected to the inductive loop sensor, the piezoelectric intelligent aggregate is connected to the control device, the solar street light is connected to the piezoelectric sensor, the solar street light is connected to the inductive loop sensor, the solar street light is connected to the piezoelectric intelligent aggregate, and the solar street light is connected to the control device.

[0007] In the aforementioned comprehensive management system for bridge health detection, the distance between two adjacent grooves is 1.5 - 2 m.

[0008] In the aforementioned comprehensive management system for bridge health detection, the laid area of the inductive loop sensor is 1.5 - 2.5 m 2 。

[0009] In the aforementioned comprehensive management system for bridge health detection, the depth H of the groove is 30 - 40 mm, and the width L of the groove is 13 - 23 mm.

[0010] In the aforementioned comprehensive management system for bridge health detection, a data center is connected to the control device.

[0011] In the aforementioned comprehensive management system for bridge health detection, a data analysis module and a communication module are sequentially connected to the control device. The control device uploads data to the data center through the communication module.

[0012] For the aforementioned comprehensive bridge health detection and management system, potting materials are also provided in the groove, and the piezoelectric sensor is wrapped in the potting materials.

[0013] For the aforementioned comprehensive bridge health detection and management system, flexible conductive crack monitoring components are provided on both the side wall and the bottom of the bridge body. The flexible conductive crack monitoring components include an adhesive layer, a conductive sheet, a conductive coating layer, an anti-corrosion and moisture-proof layer, and a protective layer that are sequentially adhered. The adhesive layer is connected to the side wall of the bridge body, and the adhesive layer is connected to the bottom of the bridge body. An electromagnetic shielding prevention wire is connected to the conductive sheet, and the electromagnetic shielding prevention wire is connected to the control device.

[0014] Compared with the prior art:

[0015] In the present utility model, a piezoelectric axle weight array is formed by the piezoelectric sensor and the inductive loop. When a heavy-duty vehicle or an axle weight array arrives before the bridge area, a warning is given. According to the obtained warning information, timely scheduling is carried out to solve the hidden dangers threatening the bridge. Vehicles are managed according to the alarm information of the system, which has strong pertinence and fast processing speed. It not only reduces the workload but also avoids disputes, and at the same time speeds up the passing speed of the bridge deck; timely solves the "axle weight array" threatening the main load of the bridge, eliminates all potential accident hazards endangering the safety of the bridge, accumulates big data, provides a health record, and provides a scientific basis for the maintenance of the bridge;

[0016] The present utility model can be directly installed on the asphalt pavement and the bridge deck, with the least damage to the road and the lowest cost for dynamic weighing. When installing the sensor, only a groove with the same width as the road needs to be opened on the road surface, and the construction time is short and the filling materials required for installation are few;

[0017] The present utility model uses piezoelectric smart aggregates to monitor the cracks on the road surface;

[0018] The present utility model uses solar street lights to provide electrical energy for the equipment, effectively utilizing the excess electrical energy of the solar street lights;

[0019] The present utility model uses a flexible conductive crack monitoring component to monitor the cracks on the bridge body. When cracks appear in the bridge body concrete, since the elastic modulus of the conductive coating layer is lower than that of the concrete, the resistance value of the conductive coating layer changes, and is transmitted to the control device through the electromagnetic shielding prevention wire connected to the conductive sheet. The control device analyzes to obtain the corresponding resistance value, and obtains the actual resistance data, and obtains the curve of the change rate of the resistance with time, so as to accurately and timely obtain the position and width of the cracks on the bridge body, playing a role of monitoring at any time;

[0020] The utility model combines a piezoelectric sensor with a ground induction coil, piezoelectric intelligent aggregates, solar street lamps, and a flexible conductive crack monitoring component to comprehensively and all-roundly detect and monitor the bridge in real time, eliminate all potential accident hazards endangering the bridge safety, accumulate big data, provide a health record, and provide a scientific basis for bridge maintenance and repair. Brief Description of the Drawings

[0021] Figure 1 is a schematic structural view of the utility model;

[0022] Figure 2 is a sectional view of the position of the piezoelectric sensor and the potting material in the groove of the utility model;

[0023] Figure 3 is the waveform detected by the system when a five-axle truck presses on the sensor;

[0024] Figure 4 is a schematic structural view of the solar street lamp and the flexible conductive crack monitoring component in the utility model;

[0025] Figure 5 is a schematic structural view of the flexible conductive crack monitoring component arranged on the side wall of the bridge body in the utility model;

[0026] Figure 6 is a schematic structural view of the flexible conductive crack monitoring component arranged on the bottom of the bridge body in the utility model.

[0027] Reference Signs: 1 - lane, 2 - groove, 3 - piezoelectric sensor, 4 - ground induction coil, 5 - potting material, 6 - piezoelectric intelligent aggregates, 7 - solar street lamp, 8 - adhesive layer, 9 - conductive sheet, 10 - conductive coating layer, 11 - anti-corrosion and moisture-proof layer, 12 - protective layer, 13 - anti-electromagnetic shielding wire.

[0028] The following further describes the utility model in conjunction with the drawings and specific embodiments. Specific Embodiments

[0029] Embodiment 1 of the utility model: A comprehensive bridge health detection and management system, including a bridge body, on which a lane 1 is provided. There are at least two lanes 1. Grooves 2 are opened on the lane 1. The grooves 2 are perpendicular to the driving direction, and the length of the grooves 2 is the same as the width of the lane 1. There are at least two grooves 2 on each lane 1. A piezoelectric sensor 3 and piezoelectric intelligent aggregates 6 are arranged in the grooves 2. There is at least one pair of piezoelectric intelligent aggregates 6. One set of piezoelectric intelligent aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric intelligent aggregates 6 is placed in another one of the grooves 2. A pair of piezoelectric intelligent aggregates 6 are electrically connected. A ground induction coil 4 is arranged between adjacent two grooves 2. Solar street lamps 7 are arranged on the side of the lane 1, and there are multiple solar street lamps 7.

[0030] Embodiment 2 of the present utility model: A comprehensive bridge health detection management system includes a bridge body. A lane 1 is provided on the bridge body. There are at least two lanes 1. Grooves 2 are formed on the lane 1. The grooves 2 are perpendicular to the driving direction. The length of the grooves 2 is the same as the width of the lane 1. There are at least two grooves 2 on each lane 1. Piezoelectric sensors 3 and piezoelectric smart aggregates 6 are arranged in the grooves 2. There is at least one pair of piezoelectric smart aggregates 6. One set of piezoelectric smart aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric smart aggregates 6 is placed in another of the grooves 2. A pair of piezoelectric smart aggregates 6 are electrically connected. Inductive loop sensors 4 are arranged between adjacent two grooves 2. Solar street lamps 7 are arranged on the side of the lane 1. There are multiple solar street lamps 7. It further includes a control device. The piezoelectric sensors 3 are connected to the control device. The piezoelectric sensors 3 are connected to the inductive loop sensors 4. The piezoelectric smart aggregates 6 are connected to the control device. The solar street lamps 7 are connected to the piezoelectric sensors 3. The solar street lamps 7 are connected to the inductive loop sensors 4. The solar street lamps 7 are connected to the piezoelectric smart aggregates 6. The solar street lamps 7 are connected to the control device.

[0031] Embodiment 3 of the present utility model: A comprehensive bridge health detection management system includes a bridge body. A lane 1 is provided on the bridge body. There are at least two lanes 1. Grooves 2 are formed on the lane 1. The grooves 2 are perpendicular to the driving direction. The length of the grooves 2 is the same as the width of the lane 1. There are at least two grooves 2 on each lane 1. Piezoelectric sensors 3 and piezoelectric smart aggregates 6 are arranged in the grooves 2. There is at least one pair of piezoelectric smart aggregates 6. One set of piezoelectric smart aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric smart aggregates 6 is placed in another of the grooves 2. A pair of piezoelectric smart aggregates 6 are electrically connected. Inductive loop sensors 4 are arranged between adjacent two grooves 2. Solar street lamps 7 are arranged on the side of the lane 1. There are multiple solar street lamps 7. It further includes a control device. The piezoelectric sensors 3 are connected to the control device. The piezoelectric sensors 3 are connected to the inductive loop sensors 4. The piezoelectric smart aggregates 6 are connected to the control device. The solar street lamps 7 are connected to the piezoelectric sensors 3. The solar street lamps 7 are connected to the inductive loop sensors 4. The solar street lamps 7 are connected to the piezoelectric smart aggregates 6. The solar street lamps 7 are connected to the control device. The distance between adjacent two grooves 2 is 1.5 - 2 m.

[0032] Embodiment 4 of the present utility model: A comprehensive bridge health detection management system, including a bridge body, on which there is a lane 1, and there are at least two lanes 1. Grooves 2 are opened on the lane 1, perpendicular to the driving direction. The length of the groove 2 is the same as the width of the lane 1. There are at least two grooves 2 on each lane 1. A piezoelectric sensor 3 and piezoelectric smart aggregates 6 are arranged in the groove 2. There is at least one pair of piezoelectric smart aggregates 6. One set of piezoelectric smart aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric smart aggregates 6 is placed in another one of the grooves 2. A pair of piezoelectric smart aggregates 6 are electrically connected. An inductive loop 4 is arranged between two adjacent grooves 2. Solar street lamps 7 are arranged on the side of the lane 1, and there are multiple solar street lamps 7. It further includes a control device. The piezoelectric sensor 3 is connected to the control device, the piezoelectric sensor 3 is connected to the inductive loop 4, the piezoelectric smart aggregates 6 are connected to the control device, the solar street lamps 7 are connected to the piezoelectric sensor 3, the solar street lamps 7 are connected to the inductive loop 4, the solar street lamps 7 are connected to the piezoelectric smart aggregates 6, and the solar street lamps 7 are connected to the control device. The distance between two adjacent grooves 2 is 1.5 - 2 m. The laid area of the inductive loop 4 is 1.5 - 2.5 m 2 .

[0033] Embodiment 5 of the present utility model: A comprehensive bridge health detection management system, including a bridge body, on which there is a lane 1, and there are at least two lanes 1. Grooves 2 are opened on the lane 1, perpendicular to the driving direction. The length of the groove 2 is the same as the width of the lane 1. There are at least two grooves 2 on each lane 1. A piezoelectric sensor 3 and piezoelectric smart aggregates 6 are arranged in the groove 2. There is at least one pair of piezoelectric smart aggregates 6. One set of piezoelectric smart aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric smart aggregates 6 is placed in another one of the grooves 2. A pair of piezoelectric smart aggregates 6 are electrically connected. An inductive loop 4 is arranged between two adjacent grooves 2. Solar street lamps 7 are arranged on the side of the lane 1, and there are multiple solar street lamps 7. It further includes a control device. The piezoelectric sensor 3 is connected to the control device, the piezoelectric sensor 3 is connected to the inductive loop 4, the piezoelectric smart aggregates 6 are connected to the control device, the solar street lamps 7 are connected to the piezoelectric sensor 3, the solar street lamps 7 are connected to the inductive loop 4, the solar street lamps 7 are connected to the piezoelectric smart aggregates 6, and the solar street lamps 7 are connected to the control device. The distance between two adjacent grooves 2 is 1.5 - 2 m. The laid area of the inductive loop 4 is 1.5 - 2.5 m 2 ; The depth H of the groove 2 is 30 - 40 mm, and the width L of the groove 2 is 13 - 23 mm.

[0034] Embodiment 6 of the present utility model: A comprehensive bridge health detection management system includes a bridge body. There is a lane 1 provided on the bridge body. There are at least two lanes 1. Grooves 2 are opened on the lane 1. The grooves 2 are perpendicular to the driving direction. The length of the grooves 2 is the same as the width of the lane 1. There are at least two grooves 2 on each lane 1. A piezoelectric sensor 3 and piezoelectric smart aggregates 6 are arranged in the grooves 2. There is at least one pair of piezoelectric smart aggregates 6. One set of piezoelectric smart aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric smart aggregates 6 is placed in another one of the grooves 2. A pair of piezoelectric smart aggregates 6 are electrically connected. An inductive loop 4 is arranged between two adjacent grooves 2. Solar street lamps 7 are arranged on the side of the lane 1. There are multiple solar street lamps 7. It further includes a control device. The piezoelectric sensor 3 is connected to the control device. The piezoelectric sensor 3 is connected to the inductive loop 4. The piezoelectric smart aggregates 6 are connected to the control device. The solar street lamps 7 are connected to the piezoelectric sensor 3. The solar street lamps 7 are connected to the inductive loop 4. The solar street lamps 7 are connected to the piezoelectric smart aggregates 6. The solar street lamps 7 are connected to the control device. The distance between two adjacent grooves 2 is 1.5 - 2 m. The laid area of the inductive loop 4 is 1.5 - 2.5 m 2 ; The depth H of the groove 2 is 30 - 40 mm, and the width L of the groove 2 is 13 - 23 mm. The control device is connected to a data center.

[0035] Embodiment 7 of the present utility model: A comprehensive bridge health detection management system includes a bridge body. There is a lane 1 provided on the bridge body. There are at least two lanes 1. Grooves 2 are opened on the lane 1. The grooves 2 are perpendicular to the driving direction. The length of the grooves 2 is the same as the width of the lane 1. There are at least two grooves 2 on each lane 1. A piezoelectric sensor 3 and piezoelectric smart aggregates 6 are arranged in the grooves 2. There is at least one pair of piezoelectric smart aggregates 6. One set of piezoelectric smart aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric smart aggregates 6 is placed in another one of the grooves 2. A pair of piezoelectric smart aggregates 6 are electrically connected. An inductive loop 4 is arranged between two adjacent grooves 2. Solar street lamps 7 are arranged on the side of the lane 1. There are multiple solar street lamps 7. It further includes a control device. The piezoelectric sensor 3 is connected to the control device. The piezoelectric sensor 3 is connected to the inductive loop 4. The piezoelectric smart aggregates 6 are connected to the control device. The solar street lamps 7 are connected to the piezoelectric sensor 3. The solar street lamps 7 are connected to the inductive loop 4. The solar street lamps 7 are connected to the piezoelectric smart aggregates 6. The solar street lamps 7 are connected to the control device. The distance between two adjacent grooves 2 is 1.5 - 2 m. The laid area of the inductive loop 4 is 1.5 - 2.5 m 2；The depth H of the groove 2 is the same as the width L, and the depth H of the groove 2 is 13 - 23 mm; a data center is connected to the control device; a data analysis module and a communication module are sequentially arranged on the control device, and the control device uploads data to the data center through the communication module.

[0036] Embodiment 8 of the present utility model: A comprehensive bridge health detection management system, including a bridge body, on which there is a lane 1, at least two lanes 1 are provided, a groove 2 is opened on the lane 1, the groove 2 is perpendicular to the driving direction, the length of the groove 2 is the same as the width of the lane 1, at least two grooves 2 are provided on each lane 1, a piezoelectric sensor 3 and a piezoelectric smart aggregate 6 are arranged in the groove 2, at least one pair of piezoelectric smart aggregates 6 are provided, one set of piezoelectric smart aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric smart aggregates 6 is placed in another of the grooves 2, a pair of piezoelectric smart aggregates 6 are electrically connected, a ground induction coil 4 is arranged between two adjacent grooves 2, a plurality of solar street lamps 7 are arranged on the side of the lane 1; it further includes a control device, the piezoelectric sensor 3 is connected to the control device, the piezoelectric sensor 3 is connected to the ground induction coil 4, the piezoelectric smart aggregate 6 is connected to the control device, the solar street lamp 7 is connected to the piezoelectric sensor 3, the solar street lamp 7 is connected to the ground induction coil 4, the solar street lamp 7 is connected to the piezoelectric smart aggregate 6, and the solar street lamp 7 is connected to the control device; the distance between two adjacent grooves 2 is 1.5 - 2 m; the laid area of the ground induction coil 4 is 1.5 - 2.5 m 2 ; the depth H of the groove 2 is 30 - 40 mm, the width L of the groove 2 is 13 - 23 mm; a data center is connected to the control device; a data analysis module and a communication module are sequentially arranged on the control device, and the control device uploads data to the data center through the communication module; a potting material 5 is further arranged in the groove 2, and the piezoelectric sensor 3 is wrapped in the potting material 5.

[0037] Embodiment 9 of the present utility model: A comprehensive bridge health detection management system, including a bridge body, on which there is a lane 1. There are two lanes 1. Grooves 2 are provided on the lane 1, perpendicular to the driving direction. The length of the groove 2 is the same as the width of the lane 1. There are two grooves 2 on each lane 1. Piezoelectric sensors 3 and piezoelectric smart aggregates 6 are arranged in the grooves 2. At least one pair of piezoelectric smart aggregates 6 is provided. One set of piezoelectric smart aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric smart aggregates 6 is placed in the other groove 2. A pair of piezoelectric smart aggregates 6 are electrically connected. A ground induction coil 4 is arranged between two adjacent grooves 2. Solar street lights 7 are arranged on the side of the lane 1, and there are multiple solar street lights 7. It also includes a control device. The piezoelectric sensor 3 is connected to the control device, the piezoelectric sensor 3 is connected to the ground induction coil 4, the piezoelectric smart aggregate 6 is connected to the control device, the solar street light 7 is connected to the piezoelectric sensor 3, the solar street light 7 is connected to the ground induction coil 4, the solar street light 7 is connected to the piezoelectric smart aggregate 6, and the solar street light 7 is connected to the control device. The distance between two adjacent grooves 2 is 1.5 m. The laid area of the ground induction coil 4 is 1.5 m 2 ; The depth H of the groove 2 is 30 mm, and the width L of the groove 2 is 13 mm. A data center is connected to the control device. An analysis module and a communication module are sequentially arranged on the control device. The control device uploads data to the data center through the communication module. A potting material 5 is also arranged in the groove 2, and the piezoelectric sensor 3 is wrapped in the potting material 5. Flexible conductive crack monitoring components are arranged on the side wall and bottom of the bridge body. The flexible conductive crack monitoring components include an adhesive layer 8, a conductive sheet 9, a conductive coating layer 10, an anti-corrosion and moisture-proof layer 11, and a protective layer 12 that are sequentially adhered. The adhesive layer 8 is connected to the side wall of the bridge body and the bottom of the bridge body. A wire for preventing electromagnetic shielding 13 is connected to the conductive sheet 9, and the wire for preventing electromagnetic shielding 13 is connected to the control device.

[0038] Embodiment 10 of the present utility model: A comprehensive bridge health detection and management system, including a bridge body, on which there is a lane 1. There are four lanes 1. Grooves 2 are opened on the lane 1, perpendicular to the driving direction. The length of the groove 2 is the same as the width of the lane 1. There are four grooves 2 on each lane 1. Piezoelectric sensors 3 and piezoelectric smart aggregates 6 are arranged in the grooves 2. At least one pair of piezoelectric smart aggregates 6 is provided. One set of piezoelectric smart aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric smart aggregates 6 is placed in another of the grooves 2. A pair of piezoelectric smart aggregates 6 are electrically connected. An inductive loop 4 is arranged between two adjacent grooves 2. Multiple solar street lamps 7 are arranged on the side of the lane 1; There is also a control device. The piezoelectric sensor 3 is connected to the control device, the piezoelectric sensor 3 is connected to the inductive loop 4, the piezoelectric smart aggregate 6 is connected to the control device, the solar street lamp 7 is connected to the piezoelectric sensor 3, the solar street lamp 7 is connected to the inductive loop 4, the solar street lamp 7 is connected to the piezoelectric smart aggregate 6, and the solar street lamp 7 is connected to the control device; The distance between two adjacent grooves 2 is 1.8 m; The laid area of the inductive loop 4 is 2 m 2 ; The depth H of the groove 2 is 35 mm, and the width L of the groove 2 is 18 mm; A data center is connected to the control device; An analysis module and a communication module are sequentially arranged on the control device. The control device uploads data to the data center through the communication module; A potting material 5 is also arranged in the groove 2, and the piezoelectric sensor 3 is wrapped in the potting material 5. Flexible conductive crack monitoring components are arranged on the side wall and bottom of the bridge body. The flexible conductive crack monitoring components include an adhesive layer 8, a conductive sheet 9, a conductive coating layer 10, an anti-corrosion and moisture-proof layer 11, and a protective layer 12 that are sequentially adhered. The adhesive layer 8 is connected to the side wall of the bridge body and the bottom of the bridge body. An anti-electromagnetic shielding wire 13 is connected to the conductive sheet 9, and the anti-electromagnetic shielding wire 13 is connected to the control device.

[0039] The piezoelectric sensor 3 and the inductive loop 4 form a piezoelectric axle load array, which can be directly installed on the asphalt lane and the bridge deck, with the least damage to the road surface of the lane and the lowest cost for dynamic weighing; When installing the sensor, only a groove with the same width as the road needs to be opened on the road surface, with a short construction time and less filling material required; The distance between two grooves 2 is 1.8 m; The laid area of the inductive loop 4 is 2 m 2 , and the inductive loop 4 is symmetric in the middle of the sensor. The time when the same axle passes through two piezoelectric sensors is divided by 1.8 meters to obtain the speed of this vehicle.

[0040] The wheelbase of the vehicle is obtained by multiplying the time when the axle passes through a piezoelectric sensor by the speed respectively. The average value of the wheelbases calculated by two piezoelectric sensors is used to improve the detection accuracy.

[0041] When the vehicle passes through the induction area in the coil, the induction value of the induction coil installed on the lane changes, causing a change in the vibration frequency of the induction detector inside the controller. This frequency change is used by the system to determine whether a vehicle has passed through the induction coil.

[0042] Before installing the system, conduct a "physical examination" on the highway bridge to find out the actual load capacity of the highway bridge and the key stress points of the main structure, and make an intelligent model system; then arrange a large data collection network array at reasonable positions on the highway bridge according to the intelligent model; conduct high-speed and dynamic collection; then summarize and analyze the collected data to form a large data accumulation; finally, through the above steps, conduct early warning, dispatching, and establish a health record.

[0043] Embodiment 11 of the present utility model: A comprehensive management system for bridge health detection, including a bridge body. There are eight lanes 1 arranged on the bridge body. Grooves 2 are opened on the lanes 1. The grooves 2 are perpendicular to the driving direction, and the length of the grooves 2 is the same as the width of the lanes 1. There are ten grooves 2 on each lane 1. Piezoelectric sensors 3 and piezoelectric intelligent aggregates 6 are arranged in the grooves 2. At least one pair of piezoelectric intelligent aggregates 6 is provided. One set of piezoelectric intelligent aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric intelligent aggregates 6 is placed in another of the grooves 2. A pair of piezoelectric intelligent aggregates 6 are electrically connected. Inductive coils 4 are arranged between adjacent two grooves 2. Solar street lamps 7 are arranged on the side of the lanes 1, and multiple solar street lamps 7 are provided; it also includes a control device. The piezoelectric sensor 3 is connected to the control device, the piezoelectric sensor 3 is connected to the inductive coil 4, the piezoelectric intelligent aggregate 6 is connected to the control device, the solar street lamp 7 is connected to the piezoelectric sensor 3, the solar street lamp 7 is connected to the inductive coil 4, the solar street lamp 7 is connected to the piezoelectric intelligent aggregate 6, and the solar street lamp 7 is connected to the control device; the distance between adjacent two grooves 2 is 2m; the laid area of the inductive coil 4 is 2.5 m2; the depth H of the groove 2 is 40 mm, and the width L of the groove 2 is 23 mm; a data center is connected to the control device; a data analysis module and a communication module are sequentially arranged on the control device. The control device uploads data to the data center through the communication module; potting materials 5 are also arranged in the grooves 2, and the piezoelectric sensor 3 is wrapped in the potting materials 5; flexible conductive crack monitoring components are arranged on the side wall and the bottom of the bridge body. The flexible conductive crack monitoring components include an adhesive layer 8, a conductive sheet 9, a conductive coating layer 10, an anti-corrosion and moisture-proof layer 11, and a protective layer 12 that are sequentially adhered. The adhesive layer 8 is connected to the side wall of the bridge body, the adhesive layer 8 is connected to the bottom of the bridge body. An anti-electromagnetic shielding wire 13 is connected to the conductive sheet 9, and the anti-electromagnetic shielding wire 13 is connected to the control device. Multiple conductive sheets 9 are provided. The conductive sheets 9 on the side wall of the bridge body are arranged at intervals, and the conductive sheets 9 on the bottom of the bridge body are arranged in a matrix.

[0044] Embodiment 12 of the present utility model: A comprehensive bridge health detection and management system, including a bridge body, on which there is a lane 1. There are eight lanes 1, and there are grooves 2 opened on the lane 1. The grooves 2 are perpendicular to the driving direction, and the length of the grooves 2 is the same as the width of the lane 1. There are ten grooves 2 on each lane 1. A piezoelectric sensor 3 and piezoelectric smart aggregates 6 are arranged in the grooves 2. At least one pair of piezoelectric smart aggregates 6 is provided. One set of piezoelectric smart aggregates 6 is placed in one of the grooves 2, and the other set of piezoelectric smart aggregates 6 is placed in another of the grooves 2. A pair of piezoelectric smart aggregates 6 are electrically connected. An inductive loop 4 is arranged between two adjacent grooves 2. Multiple solar street lamps 7 are arranged on the side of the lane 1; It also includes a control device. The piezoelectric sensor 3 is connected to the control device, the piezoelectric sensor 3 is connected to the inductive loop 4, the piezoelectric smart aggregates 6 are connected to the control device, the solar street lamp 7 is connected to the piezoelectric sensor 3, the solar street lamp 7 is connected to the inductive loop 4, the solar street lamp 7 is connected to the piezoelectric smart aggregates 6, and the solar street lamp 7 is connected to the control device; The distance between two adjacent grooves 2 is 2m; The laid area of the inductive loop 4 is 2.5 m2; The depth H of the groove 2 is 40 mm, and the width L of the groove 2 is 23 mm; A data center is connected to the control device; An analysis module and a communication module are sequentially arranged on the control device. The control device uploads data to the data center through the communication module; There is also a potting material 5 arranged in the groove 2, and the piezoelectric sensor 3 is wrapped in the potting material 5; Flexible conductive crack monitoring components are arranged on both the side wall and the bottom of the bridge body. The flexible conductive crack monitoring components include an adhesive layer 8, a conductive sheet 9, a conductive coating layer 10, an anti-corrosion and moisture-proof layer 11, and a protective layer 12 that are sequentially adhered. The adhesive layer 8 is connected to the side wall of the bridge body and the bottom of the bridge body. An anti-electromagnetic shielding wire 13 is connected to the conductive sheet 9, and the anti-electromagnetic shielding wire 13 is connected to the control device; Among them, the adhesive layer 8 uses epoxy resin glue, the conductive sheet 9 uses graphite material, the conductive coating layer 10 uses carbon nanotube / polymer conductive coating, and the anti-corrosion and moisture-proof layer 11 uses cyanate ester anti-corrosion waterproof coating.

[0045] Working principle of an embodiment of the present utility model: In the present utility model, a piezoelectric axle weight array is formed by a piezoelectric sensor 3 and a ground sense coil 4. The axle weight array can provide a real-time trend change diagram of the bridge and a dynamic axle weight distribution diagram of the vehicles on the bridge, that is, the vehicle load can be mapped into a dynamic axle weight array; the dynamic axle weight array is the excitation signal of the system. A non-contact lidar is installed at any required point on the bridge to describe the vibration generated by the axle weight array at the key points. For example, 4 lidars can be installed on a 200-meter bridge as the response of our monitoring system. The lidar will give time-domain signals and frequency-domain signals. With the excitation signal of the axle weight array and the response signal of the vibration, the upper computer can accurately calculate the development trend of the bridge health according to the inherent characteristics of the bridge and the occurrence times of the malignant axle weight array through a careful algorithm. If the warning value is reached, an alarm message can be given to protect the lives and property safety of the bridge and pedestrians;

[0046] When cracks appear in the bridge body concrete, since the elastic modulus of the conductive coating layer 10 is lower than that of the concrete, the resistance value of the conductive coating layer changes. It is transmitted to the control device through the anti-electromagnetic shielding wire 13 connected to the conductive sheet 9. The control device analyzes to obtain the corresponding resistance value and the actual resistance data, and obtains the curve of the resistance change rate changing with time, so as to accurately and timely obtain the position and width of the bridge body cracks, playing a role of monitoring at any time.

Claims

1. A bridge health detection integrated management system, comprising a bridge body, characterized in that: The bridge body is provided with a lane (1), the lane (1) is provided with at least two lanes, a groove (2) is provided on the lane (1), the groove (2) is perpendicular to the driving direction, the length of the groove (2) is the same as the width of the lane (1), each lane (1) is provided with at least two grooves (2), a piezoelectric sensor (3) and a piezoelectric intelligent aggregate (6) are provided in the groove (2), at least one pair of piezoelectric intelligent aggregates (6) is provided, one set of piezoelectric intelligent aggregates (6) is placed in one of the grooves (2), and the other set of piezoelectric intelligent aggregates (6) is placed in the other groove (2), the pair of piezoelectric intelligent aggregates (6) are electrically connected, a ground sensing coil (4) is provided between two adjacent grooves (2), a solar street light (7) is provided on the side of the lane (1), and a plurality of solar street lights (7) are provided.

2. A bridge health detection integrated management system according to claim 1, characterized in that: The device also includes a control device, the piezoelectric sensor (3) is connected to the control device, the piezoelectric sensor (3) is connected to the ground sensing coil (4), the piezoelectric intelligent aggregate (6) is connected to the control device, the solar street light (7) is connected to the piezoelectric sensor (3), the solar street light (7) is connected to the ground sensing coil (4), the solar street light (7) is connected to the piezoelectric intelligent aggregate (6), and the solar street light (7) is connected to the control device.

3. A bridge health detection integrated management system according to claim 1, characterized in that: The distance between two adjacent grooves (2) is 1.5-2m.

4. A bridge health detection integrated management system according to claim 1, characterized in that: The area of ​​the ground sensor coil (4) after laying is 1.5-2.5m 2 .

5. A bridge health detection integrated management system according to claim 1, characterized in that: The depth H of the groove (2) is 30-40 mm, and the width L of the groove (2) is 13-23 mm.

6. A bridge health detection integrated management system according to claim 2, characterized in that: The control device is connected to a data center.

7. A bridge health detection integrated management system according to claim 6, characterized in that: The control device is provided with a data analysis module and a communication module which are connected in sequence, and the control device uploads the data to the data center through the communication module.

8. The bridge health detection integrated management system according to claim 1 is characterized in that: A potting material (5) is also provided in the groove (2), and the piezoelectric sensor (3) is wrapped in the potting material (5).

9. A bridge health detection integrated management system according to claim 1, characterized in that: The side wall and the bottom of the bridge body are both provided with a flexible conductive crack monitoring component, the flexible conductive crack monitoring component comprises an adhesive layer (8), a conductive sheet (9), a conductive coating layer (10), an anti-corrosion and moisture-proof layer (11) and a protective layer (12) which are sequentially attached, the adhesive layer (8) is connected to the side wall of the bridge body, the adhesive layer (8) is connected to the bottom of the bridge body, an electromagnetic shielding wire (13) is connected to the conductive sheet (9), and the electromagnetic shielding wire (13) is connected to a control device.

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