A bridge safety status monitoring and early warning method and system

Abstract

The present invention provides a bridge safety status monitoring and early warning method and system, which relate to the technical field of bridge monitoring, wherein the method comprises the following steps: when the bridge to be tested is a new bridge, first monitoring data of the bridge to be tested is collected in real time, and the three-dimensional model is analyzed at the same time to determine a first monitoring data threshold set, and the first monitoring data is compared with the first monitoring data threshold set to obtain a corresponding first comparison result and display it in real time; when the bridge to be tested is an old bridge, second monitoring data of the bridge to be tested is collected in real time, and the three-dimensional model is analyzed at the same time to determine a second monitoring data threshold set, and the second monitoring data is compared with the second monitoring data threshold set and displayed in real time to obtain a corresponding second comparison result and display it in real time; the present invention can accurately obtain the overall predicted state of the target bridge, thereby generating reliable early warning information and ensuring the safety of the bridge.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge monitoring, and more particularly to a bridge safety status monitoring and early warning method and system. Background Art

[0002] Bridges generally refer to structures built across rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that are built across mountain streams, poor geology, or to meet other transportation needs to make travel more convenient.

[0003] However, earthquakes, floods, strong winds, changes in geological conditions, overloading and other factors can cause damage to bridge structures. Once a bridge is damaged, it is easy to affect the subsequent passage of vehicles and pedestrians, thereby affecting the subsequent use of the bridge. At the same time, existing bridge safety status monitoring is usually based on preset fixed monitoring parameters and preset fixed thresholds. With the development of economy and technology, existing bridge construction is used by both new and old bridges. Due to objective reasons such as the different service life and design standards of new and old bridges, if the same parameters are used for testing and early warning, it is difficult to accurately obtain the overall status information of the bridge, which affects the accuracy of subsequent abnormal status judgment.

[0004] Therefore, how to provide a bridge safety status monitoring and early warning method that can solve the above problems is an issue that technical personnel in this field urgently need to solve. Summary of the invention

[0005] In view of this, the present invention provides a bridge safety status monitoring and early warning method and system, which can accurately obtain the overall predicted status of the target bridge, thereby generating reliable early warning information to ensure the safety of the bridge.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A bridge safety status monitoring and early warning method comprises the following steps:

[0008] Perform 3D scanning on the bridge to be tested and build a corresponding 3D model based on the 3D scanning results;

[0009] Determining whether the bridge to be tested is a new bridge or an old bridge according to the three-dimensional model;

[0010] When the bridge to be tested is a new bridge, first monitoring data of the bridge to be tested is collected in real time, and the three-dimensional model is analyzed to determine a first monitoring data threshold set, and the first monitoring data is compared with the first monitoring data threshold set to obtain a corresponding first comparison result and display it in real time;

[0011] When the bridge to be tested is an old bridge, the second monitoring data of the bridge to be tested is collected in real time, and the three-dimensional model is analyzed at the same time to determine the second monitoring data threshold set, and the second monitoring data is compared with the second monitoring data threshold set and displayed in real time to obtain a corresponding second comparison result and display it in real time.

[0012] Preferably, it also includes:

[0013] Remotely notify staff to process based on the first comparison result or the second comparison result.

[0014] Preferably, the specific process of determining the first monitoring data threshold set includes:

[0015] When the bridge to be tested is a new bridge, first monitoring data of the bridge to be tested is collected in real time, wherein the first monitoring data includes vertical force load, angle change, and displacement change;

[0016] Simulating the three-dimensional model of the bridge to be tested to determine a corresponding simulation model;

[0017] A plurality of first simulation test conditions are pre-set, and a simulation test is performed on the simulation model under each of the first simulation test conditions, and a corresponding first monitoring data threshold set is determined according to the test results, wherein the first monitoring data threshold set includes a first vertical force load threshold, a first rotation angle change threshold, and a first displacement change threshold, a second vertical force load threshold, a second rotation angle change threshold, and a second displacement change threshold.

[0018] Preferably, the specific process of determining the second monitoring data threshold set includes:

[0019] When the bridge to be tested is an old bridge, collecting second monitoring data of the bridge to be tested in real time, wherein the second monitoring data includes a rotation angle change and a displacement change;

[0020] Simulating the three-dimensional model of the bridge to be tested to determine a corresponding simulation model;

[0021] A plurality of second simulation test conditions are pre-set, and the simulation model is simulated and tested under each of the second simulation test conditions. The corresponding second monitoring data threshold set is determined according to the test results. The second monitoring data threshold set includes a third rotation angle change threshold, a third displacement change threshold, a fourth rotation angle change threshold and a fourth displacement change threshold.

[0022] Preferably, the specific processing process of obtaining the corresponding first comparison result includes:

[0023] When the vertical force load, the rotation angle change, and the displacement change are all less than the corresponding first vertical force load threshold, first rotation angle change threshold, and first displacement change threshold, the monitoring data is normal at this time;

[0024] When any of the vertical force load, the angle change and the displacement change is greater than or equal to the corresponding second vertical force load threshold, the second angle change threshold and the second displacement change threshold, the bridge to be tested stops passing and notifies the staff through the wireless communication device;

[0025] When any of the vertical force load, angular change and displacement change parameters are within the corresponding threshold range, the vertical force load, angular change and displacement change are applied to the simulation model as simulation quantities to obtain corresponding simulation results. It is determined whether there is an abnormality based on the simulation results. If there is an abnormality, the staff is notified through wireless communication equipment. If not, the data continues to be monitored normally.

[0026] Preferably, the specific processing process of obtaining the corresponding second comparison result includes:

[0027] When the rotation angle variation and the displacement variation are both less than the corresponding third rotation angle variation threshold and third displacement variation threshold, the monitoring data is normal at this time;

[0028] When any of the angle change and the displacement change is greater than or equal to the fourth angle change threshold or the fourth displacement change threshold, the bridge to be tested stops passing traffic and notifies the staff through the wireless communication device;

[0029] When any of the angle change and displacement change are within the corresponding threshold range, the angle change and displacement change are applied to the simulation model as simulation quantities to obtain corresponding simulation results. According to the simulation results, it is judged whether there is an abnormality. If there is an abnormality, the staff is notified through wireless communication equipment. If not, the data continues to be monitored normally.

[0030] Preferably, the specific process of determining whether the bridge to be tested is a new bridge or an old bridge includes:

[0031] A recognition model is constructed, the three-dimensional scanning result is input into the recognition model for processing, and it is determined whether the bridge to be tested is a new bridge or an old bridge according to the processing result.

[0032] The present invention also provides a bridge safety status monitoring and early warning system, comprising:

[0033] An acquisition module is used to perform a three-dimensional scan on the bridge to be tested and to construct a corresponding three-dimensional model according to the three-dimensional scanning result;

[0034] A judgment module, used for determining whether the bridge to be tested is a new bridge or an old bridge according to the three-dimensional model;

[0035] A first early warning module is used for, when the bridge to be tested is a new bridge, collecting first monitoring data of the bridge to be tested in real time, analyzing the three-dimensional model, determining a first monitoring data threshold set, and comparing the first monitoring data with the first monitoring data threshold set to obtain a corresponding first comparison result and displaying it in real time;

[0036] The second early warning module is used to collect the second monitoring data of the bridge to be tested in real time when the bridge to be tested is an old bridge, and at the same time analyze the three-dimensional model to determine the second monitoring data threshold set, and compare the second monitoring data with the second monitoring data threshold set and display them in real time to obtain the corresponding second comparison result and display it in real time.

[0037] It can be seen from the above technical solution that, compared with the prior art, the present invention discloses a bridge safety status monitoring and early warning method and system, which determines whether the bridge is a new bridge or an old bridge according to the three-dimensional model recognition result of the bridge to be tested, and performs corresponding simulation tests according to different judgment results to determine the monitoring parameters of the bridge to be tested and the corresponding actual threshold range. By monitoring the parameters of the bridge to be tested and comparing the thresholds, the safety status of the bridge to be tested can be more accurately obtained, thereby generating reliable early warning information to ensure the safety of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0039] Figure 1 An overall flow chart of a bridge safety status monitoring and early warning method provided by the present invention;

[0040] Figure 2 The present invention provides a structural principle block diagram of a bridge safety status monitoring and early warning system. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1 As shown, the embodiment of the present invention discloses a bridge safety status monitoring and early warning method, comprising the following steps:

[0043] Performing a three-dimensional scan on the bridge to be tested, and constructing a corresponding three-dimensional model according to the three-dimensional scanning result, wherein the three-dimensional scanning process may adopt laser scanning;

[0044] Determine whether the bridge to be tested is a new bridge or an old bridge according to the three-dimensional model;

[0045] When the bridge to be tested is a new bridge, first monitoring data of the bridge to be tested is collected in real time, and the three-dimensional model is analyzed at the same time to determine a first monitoring data threshold set, and the first monitoring data is compared with the first monitoring data threshold set to obtain a corresponding first comparison result and display it in real time;

[0046] When the bridge to be tested is an old bridge, the second monitoring data of the bridge to be tested is collected in real time, and the three-dimensional model is analyzed at the same time to determine the second monitoring data threshold set, and the second monitoring data is compared with the second monitoring data threshold set and displayed in real time to obtain the corresponding second comparison result and display it in real time.

[0047] In a specific embodiment, it also includes:

[0048] According to the first comparison result or the second comparison result, the staff is remotely notified to handle the problem.

[0049] In a specific embodiment, the specific process of determining the first monitoring data threshold set includes:

[0050] When the bridge to be tested is a new bridge, first monitoring data of the bridge to be tested is collected in real time, the first monitoring data including vertical force load, angle change and displacement change;

[0051] Simulate the three-dimensional model of the bridge to be tested and determine the corresponding simulation model;

[0052] A plurality of first simulation test conditions are pre-set, and a simulation test is performed on the simulation model under each of the first simulation test conditions. A corresponding first monitoring data threshold set is determined according to the test results. The first monitoring data threshold set includes a first vertical force load threshold, a first rotation angle change threshold, and a first displacement change threshold, a second vertical force load threshold, a second rotation angle change threshold, and a second displacement change threshold.

[0053] Specifically, the first simulation test condition may include multiple separate vertical force load test parameters, multiple separate angle change test parameters, and multiple separate displacement change test parameters. At the same time, the first simulation test condition may also include a combination test condition of vertical force load test parameters and angle change test parameters, a combination test condition of vertical force load test parameters and displacement change test parameters, a combination test condition of angle change test parameters and displacement change test parameters, and a combination test condition of vertical force load test parameters, angle change test parameters, and displacement change test parameters.

[0054] During the simulation test, multiple separate vertical force load test parameters, multiple separate rotation angle change test parameters and multiple separate displacement change test parameters are used in turn to perform tests, and the corresponding independent threshold upper and lower limits are determined. Then, the corresponding independent threshold upper and lower limits are obtained by using the subsequent combined test conditions. Finally, the two sets of independent threshold upper and lower limits are weightedly fused to obtain the final first vertical force load threshold, first rotation angle change threshold and first displacement change threshold, second vertical force load threshold, second rotation angle change threshold and second displacement change threshold. By comprehensively considering the actual structure of the bridge to be tested and a variety of simulation test conditions, the corresponding actual threshold range is determined, which can improve the accuracy of judging whether there is an abnormal situation in the bridge.

[0055] In a specific embodiment, the specific process of determining the second monitoring data threshold set includes:

[0056] When the bridge to be tested is an old bridge, the second monitoring data of the bridge to be tested is collected in real time, and the second monitoring data includes the angle change amount and the displacement change amount;

[0057] Simulate the three-dimensional model of the bridge to be tested and determine the corresponding simulation model;

[0058] A plurality of second simulation test conditions are pre-set, and a simulation test is performed on the simulation model under each second simulation test condition. The corresponding second monitoring data threshold set is determined according to the test results. The second monitoring data threshold set includes a third turning angle change threshold, a third displacement change threshold, a fourth turning angle change threshold and a fourth displacement change threshold.

[0059] Specifically, the second simulation test condition may include a plurality of separate rotation angle change test parameters and a plurality of separate displacement change test parameters. Meanwhile, the second simulation test condition may also include a combination test condition of the rotation angle change test parameter and the displacement change test parameter.

[0060] During the simulation test, multiple separate angle change test parameters and multiple separate displacement change test parameters are used in turn to perform tests, and the corresponding independent threshold upper and lower limits are determined. Then, the corresponding independent threshold upper and lower limits are obtained by using the subsequent combined test conditions. Finally, the two sets of independent threshold upper and lower limits are weightedly fused to obtain the final third angle change threshold, third displacement change threshold, fourth angle change threshold, and fourth displacement change threshold. By comprehensively considering the actual structure of the bridge to be tested and a variety of simulation test conditions, the corresponding actual threshold range is determined, which can improve the accuracy of determining whether there is an abnormal situation in the bridge.

[0061] In a specific embodiment, the specific processing process of obtaining the corresponding first comparison result includes:

[0062] When the vertical force load, the rotation angle change, and the displacement change are all less than the corresponding first vertical force load threshold, first rotation angle change threshold, and first displacement change threshold, the monitoring data is normal at this time;

[0063] When any of the vertical force load, the rotation angle change and the displacement change (i.e. any one, any two or three) is greater than or equal to the corresponding second vertical force load threshold, second rotation angle change threshold and second displacement change threshold, the bridge to be tested stops passing and notifies the staff through the wireless communication device;

[0064] When any several parameters of the vertical force load, the angle change and the displacement change (i.e. any one, any two or three) are within the corresponding threshold range (i.e. the vertical force load is between the first vertical force load threshold and the second vertical force load threshold, the angle change is between the first angle change threshold and the second angle change threshold, and the displacement change is between the first displacement change threshold and the second displacement change threshold), the vertical force load, the angle change and the displacement change are applied to the simulation model as simulation quantities to obtain corresponding simulation results, and whether there is an abnormality is determined based on the simulation results. If there is an abnormality, the staff is notified through wireless communication equipment. If not, the data continues to be monitored normally.

[0065] In a specific embodiment, the specific processing process of obtaining the corresponding second comparison result includes:

[0066] When the rotation angle variation and the displacement variation are both less than the corresponding third rotation angle variation threshold and third displacement variation threshold, the monitoring data is normal at this time;

[0067] When any of the angle change and the displacement change (i.e. any one or both) is greater than or equal to the fourth angle change threshold or the fourth displacement change threshold, the bridge to be tested stops passing traffic and notifies the staff through the wireless communication device;

[0068] When any several items of the angle change and the displacement change (i.e. any one item, or two items) are within the corresponding threshold range (i.e. the angle change is between the third angle change threshold and the fourth angle change threshold, and the displacement change is between the third displacement change threshold and the fourth displacement change threshold), the angle change and the displacement change are applied to the simulation model as simulation quantities to obtain the corresponding simulation results. It is determined whether there is an abnormality based on the simulation results. If there is an abnormality, the staff is notified through the wireless communication equipment. If not, the data continues to be monitored normally.

[0069] In a specific embodiment, the specific process of determining whether the bridge to be tested is a new bridge or an old bridge includes:

[0070] Construct a recognition model, input the three-dimensional scanning results into the recognition model for processing, and determine whether the bridge to be tested is a new bridge or an old bridge based on the processing results. The recognition model can be a convolutional neural network, which is implemented by judging the structural characteristics and usage of the bridge to be tested.

[0071] See also Figure 2 As shown, an embodiment of the present invention further provides a bridge safety status monitoring and early warning system using any one of the above embodiments, including:

[0072] An acquisition module is used to perform a three-dimensional scan on the bridge to be tested and to construct a corresponding three-dimensional model according to the three-dimensional scanning result;

[0073] A judgment module, used to determine whether the bridge to be tested is a new bridge or an old bridge according to the three-dimensional model;

[0074] The first early warning module is used to collect first monitoring data of the bridge to be tested in real time when the bridge to be tested is a new bridge, analyze the three-dimensional model at the same time, determine a first monitoring data threshold set, and compare the first monitoring data with the first monitoring data threshold set to obtain a corresponding first comparison result and display it in real time;

[0075] The second early warning module is used to collect the second monitoring data of the bridge to be tested in real time when the bridge to be tested is an old bridge, and at the same time analyze the three-dimensional model to determine the second monitoring data threshold set, and compare the second monitoring data with the second monitoring data threshold set and display them in real time to obtain the corresponding second comparison result and display it in real time.

[0076] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0077] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bridge safety status monitoring and early warning method, characterized in that: The following steps are involved: Perform 3D scanning on the bridge to be tested and build a corresponding 3D model based on the 3D scanning results; Determining whether the bridge to be tested is a new bridge or an old bridge according to the three-dimensional model; When the bridge to be tested is a new bridge, first monitoring data of the bridge to be tested is collected in real time, and the three-dimensional model is analyzed to determine a first monitoring data threshold set, and the first monitoring data is compared with the first monitoring data threshold set to obtain a corresponding first comparison result and display it in real time; When the bridge to be tested is an old bridge, the second monitoring data of the bridge to be tested is collected in real time, and the three-dimensional model is analyzed at the same time to determine the second monitoring data threshold set, and the second monitoring data is compared with the second monitoring data threshold set and displayed in real time to obtain a corresponding second comparison result and display it in real time.

2. A bridge safety status monitoring and early warning method according to claim 1, characterized in that: Also includes: Remotely notify staff to process based on the first comparison result or the second comparison result.

3. A bridge safety status monitoring and early warning method according to claim 1, characterized in that: The specific process of determining the first monitoring data threshold set includes: When the bridge to be tested is a new bridge, first monitoring data of the bridge to be tested is collected in real time, wherein the first monitoring data includes vertical force load, angle change, and displacement change; Simulating the three-dimensional model of the bridge to be tested to determine a corresponding simulation model; A plurality of first simulation test conditions are pre-set, and a simulation test is performed on the simulation model under each of the first simulation test conditions, and a corresponding first monitoring data threshold set is determined according to the test results, wherein the first monitoring data threshold set includes a first vertical force load threshold, a first rotation angle change threshold, and a first displacement change threshold, a second vertical force load threshold, a second rotation angle change threshold, and a second displacement change threshold.

4. A bridge safety status monitoring and early warning method according to claim 1, characterized in that: The specific process of determining the second monitoring data threshold set includes: When the bridge to be tested is an old bridge, collecting second monitoring data of the bridge to be tested in real time, wherein the second monitoring data includes a rotation angle change and a displacement change; Simulating the three-dimensional model of the bridge to be tested to determine a corresponding simulation model; A plurality of second simulation test conditions are pre-set, and the simulation model is simulated and tested under each of the second simulation test conditions. The corresponding second monitoring data threshold set is determined according to the test results. The second monitoring data threshold set includes a third rotation angle change threshold, a third displacement change threshold, a fourth rotation angle change threshold and a fourth displacement change threshold.

5. A bridge safety status monitoring and early warning method according to claim 3, characterized in that: The specific processing process of obtaining the corresponding first comparison result includes: When the vertical force load, the rotation angle change, and the displacement change are all less than the corresponding first vertical force load threshold, first rotation angle change threshold, and first displacement change threshold, the monitoring data is normal at this time; When any of the vertical force load, the angle change and the displacement change is greater than or equal to the corresponding second vertical force load threshold, the second angle change threshold and the second displacement change threshold, the bridge to be tested stops passing and notifies the staff through the wireless communication device; When any of the vertical force load, angular change and displacement change parameters are within the corresponding threshold range, the vertical force load, angular change and displacement change are applied to the simulation model as simulation quantities to obtain corresponding simulation results. It is determined whether there is an abnormality based on the simulation results. If there is an abnormality, the staff is notified through wireless communication equipment. If not, the data continues to be monitored normally.

6. A bridge safety status monitoring and early warning method according to claim 4, characterized in that: The specific processing process of obtaining the corresponding second comparison result includes: When the rotation angle variation and the displacement variation are both less than the corresponding third rotation angle variation threshold and third displacement variation threshold, the monitoring data is normal at this time; When any of the angle change and the displacement change is greater than or equal to the fourth angle change threshold or the fourth displacement change threshold, the bridge to be tested stops passing traffic and notifies the staff through the wireless communication device; When any of the angle change and displacement change are within the corresponding threshold range, the angle change and displacement change are applied to the simulation model as simulation quantities to obtain corresponding simulation results. According to the simulation results, it is judged whether there is an abnormality. If there is an abnormality, the staff is notified through wireless communication equipment. If not, the data continues to be monitored normally.

7. A bridge safety status monitoring and early warning method according to claim 1, characterized in that: The specific process of determining whether the bridge to be tested is a new bridge or an old bridge includes: A recognition model is constructed, the three-dimensional scanning result is input into the recognition model for processing, and it is determined whether the bridge to be tested is a new bridge or an old bridge according to the processing result.

8. A system using a bridge safety status monitoring and early warning method according to any one of claims 1 to 7, characterized in that: include: An acquisition module is used to perform a three-dimensional scan on the bridge to be tested and to construct a corresponding three-dimensional model according to the three-dimensional scanning result; A judgment module, used for determining whether the bridge to be tested is a new bridge or an old bridge according to the three-dimensional model; A first early warning module is used for, when the bridge to be tested is a new bridge, collecting first monitoring data of the bridge to be tested in real time, analyzing the three-dimensional model, determining a first monitoring data threshold set, and comparing the first monitoring data with the first monitoring data threshold set to obtain a corresponding first comparison result and displaying it in real time; The second early warning module is used to collect the second monitoring data of the bridge to be tested in real time when the bridge to be tested is an old bridge, and at the same time analyze the three-dimensional model to determine the second monitoring data threshold set, and compare the second monitoring data with the second monitoring data threshold set and display them in real time to obtain the corresponding second comparison result and display it in real time.

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