CN115376303A - Bridge telescoping device safety monitoring system - Google Patents
Bridge telescoping device safety monitoring system Download PDFInfo
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- CN115376303A CN115376303A CN202211314330.9A CN202211314330A CN115376303A CN 115376303 A CN115376303 A CN 115376303A CN 202211314330 A CN202211314330 A CN 202211314330A CN 115376303 A CN115376303 A CN 115376303A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B31/00—Predictive alarm systems characterised by extrapolation or other computation using updated historic data
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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Abstract
The invention relates to a safety monitoring system for a bridge expansion device. The system adopts a sensing layer to collect monitoring data of the bridge expansion device in real time, adopts a service layer connected with the sensing layer to generate a monitoring result based on the monitoring data, generates state information of the bridge expansion device based on the monitoring result, determines whether alarm information is generated or not based on the state information, and adopts an application layer connected with the service layer to display information so as to realize real-time safety monitoring of the bridge expansion device and further improve the safety of using the bridge.
Description
Technical Field
The invention relates to the technical field of safety monitoring, in particular to a safety monitoring system for a bridge expansion device.
Background
The expansion device is a structural protection accessory product bearing the maximum power load in a bridge structure and is required to bear various complex power loads or impacts with different magnitudes.
Most of bridge expansion devices currently used in the market are analog-digital expansion devices, which generally have two structural forms, one is a multi-support type, and the other is a single-support type. A plurality of supporting cross beams are adopted in each displacement box of the multi-supporting type, and each supporting cross beam is fixed with one middle beam; in the single-support type displacement box, a supporting cross beam is adopted, and the supporting cross beam supports one or more middle beams.
The existing bridge needs a telescopic device to meet the function of multidirectional displacement under the action of external force such as load, wind power, earthquake and the like, and bear a large amount of impact load of vehicles for a long time. After the bridge expansion device is damaged, large maintenance work cannot be carried out, and both sides are rigidly anchored, so that the bridge structure is damaged under extreme conditions (such as earthquake, hurricane, insufficient actual expansion amount and the like). Therefore, safety monitoring is performed on the bridge expansion device, and then the safety of the bridge is improved, which is a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a safety monitoring system for a bridge expansion device, which can be used for carrying out real-time safety monitoring on the bridge expansion device.
In order to achieve the purpose, the invention provides the following scheme:
a bridge expansion device safety monitoring system, comprising:
the sensing layer is used for acquiring monitoring data of the bridge expansion device in real time;
the service layer is connected with the sensing layer, is used for generating a monitoring result based on the monitoring data, is used for generating state information of the bridge expansion device based on the monitoring result, and is used for determining whether to generate alarm information based on the state information; the state information comprises a structural state and a damage state;
and the application layer is connected with the service layer and used for displaying information.
Preferably, the method further comprises the following steps:
and the acquisition layer is respectively connected with the sensing layer and the service layer and is used for forming a wireless channel between the sensing layer and the service layer.
Preferably, the acquisition layer comprises: a wireless node and a wireless gateway.
Preferably, the sensing layer comprises:
the vibrating wire type strain gauge is used for acquiring deformation data of the bridge expansion device;
the crack sensor is used for acquiring crack data of the bridge expansion device;
the hinged displacement sensor is used for acquiring displacement and gap data of the bridge expansion device;
the LVDT displacement sensor is used for acquiring the offset and falling data of the pressure bearing support/the pressing support in the bridge expansion device;
the temperature and humidity sensor is used for acquiring temperature and humidity data of the environment where the bridge expansion device is located;
the camera is used for collecting a field operation condition diagram of the bridge expansion device.
Preferably, the articulated displacement sensor adopts a rod type transmission mode; and buffer strokes are arranged at two ends of the hinged displacement sensor.
Preferably, the articulated displacement sensor comprises: a carbon film measuring unit and an anodized case; the carbon film measuring unit is built in the housing.
Preferably, the measurement stroke of the articulated displacement sensor is more than 1 meter.
Preferably, the service layer includes:
the data analysis module is used for carrying out time domain analysis and frequency domain analysis on the monitoring data to obtain data characteristics and determining model parameters of the bridge expansion device based on the data characteristics;
the data processing module is connected with the data analysis module and used for generating state information of the bridge expansion device based on the model parameters and determining whether to generate alarm information based on the state information;
the data storage module is respectively connected with the data analysis module, the data processing module and the sensing layer and is used for receiving and storing the monitoring data, the model parameters, the state information and the alarm information;
and the alarm module is connected with the data processing module and used for generating an alarm signal based on the alarm information.
Preferably, the application layer includes:
the information display module is connected with the data storage module and used for displaying information;
the information statistical module is connected with the data processing module and used for displaying the monitoring data of each measuring point;
the alarm information module is connected with the alarm module and used for displaying the alarm information; the alarm information includes: measuring point names, alarm levels, alarm types, alarm time and alarm values;
and the report management module is connected with the alarm module and is used for providing a data downloading function.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the safety monitoring system for the bridge expansion device, the sensing layer is adopted to collect monitoring data of the bridge expansion device in real time, the service layer connected with the sensing layer is adopted to generate a monitoring result based on the monitoring data, the state information of the bridge expansion device is generated based on the monitoring result, whether alarm information is generated or not is determined based on the state information, and the application layer connected with the service layer is adopted to display information, so that the real-time safety monitoring of the bridge expansion device is realized, and the safety of using a bridge is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a safety monitoring system for a bridge expansion device according to the present invention;
fig. 2 is an implementation architecture diagram of the bridge expansion device safety monitoring system provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a safety monitoring system for a bridge expansion device, which can be used for carrying out real-time safety monitoring on the bridge expansion device.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the safety monitoring system for a bridge expansion device provided by the invention comprises:
and the sensing layer is used for acquiring monitoring data of the bridge expansion device in real time.
And the service layer is connected with the sensing layer, is used for generating a monitoring result based on the monitoring data, is used for generating state information of the bridge expansion device based on the monitoring result, and is used for determining whether to generate alarm information based on the state information. The status information includes a structural status and a damage status.
And the application layer is connected with the service layer and used for displaying information.
Wherein, the monitoring content of the perception layer comprises: whether the section steel has cracks or not, whether the welding seam between the hanger and the section steel has cracks or not, whether the gap between the section steel is uniform or not, whether the pressure bearing support/the pressing support has deviation or falls off or not and the like.
Further, in order to improve the real-time performance and convenience of data transmission, the safety monitoring system for the bridge expansion device provided by the invention further comprises:
and the acquisition layer is respectively connected with the sensing layer and the service layer and is used for forming a wireless channel between the sensing layer and the service layer.
Based on the bridge telescoping device safety monitoring system that provides realize monitoring, bridge telescoping device wholeness ability monitoring, bridge telescoping device control section stress monitoring and video monitoring to the operational environment of bridge telescoping device, through data real-time processing analysis, the health condition of reaction bridge telescoping device. The acquisition layer acquires data of the sensing layer, the acquisition layer and the service layer adopt a wireless network to transmit data, and the service layer and the application layer adopt the wireless network to transmit data.
Based on the realized functions, the sensing layer is used as a monitoring instrument of the bridge expansion device. In order to further improve the completeness and the implementation performance of the scheme, the sensing layer adopted by the invention comprises a vibrating wire type strain gauge, a crack sensor, a hinged displacement sensor, an LVDT displacement sensor, a temperature and humidity sensor and a camera.
The vibration wire type strain gauge is used for monitoring whether the section steel in the bridge expansion device is broken or not, and when the section steel of the measured bridge expansion device is deformed under the action of external force and is transmitted to a steel string through mounting heads at two ends of the vibration wire type strain gauge so that the strain of the steel string is changed, the inherent frequency of the steel string is changed accordingly. Through measuring the change of string wire frequency, can learn the change of meeting an emergency of being surveyed bridge telescoping device shaped steel, if bridge telescoping device shaped steel meets an emergency and takes place great change, can judge that shaped steel has taken place serious deformation.
The crack sensor is used for monitoring the welding seam between the lifting hook and the profile steel, the welding seam is hidden and is difficult to observe, large-scale flaw detection equipment cannot be installed in a narrow space of a bridge expansion device, and the sensor for directly monitoring the welding seam does not exist in the current market. In conventional monitoring services, there are crack monitoring devices. The monitoring attribute is attributed to displacement-like data monitoring. The invention is also designed according to the technical route for monitoring cracks. In the bridge telescoping device, shaped steel receives the influence of car load big, and the lifting hook is less, and considering the gallows numerous, every gallows is all done the crack monitoring inadvisable, selects rut position gallows as the monitoring focus.
The articulated displacement sensor is used for monitoring the displacement of the bridge expansion device and whether the gaps between various types of steel are uniform, is a contact displacement sensor, and has the measurement principle similar to the effect of a displacement box in the bridge expansion device. The hinged displacement sensor provided by the invention adopts rod-type transmission, the effective stroke can reach more than 1 meter, and the two ends are provided with buffer strokes. And (4) performing anodic treatment on the surface of the shell to prevent corrosion. The built-in carbon film measuring unit has no temperature drift, long service life and automatic electrical grounding function. The hinged displacement sensor is suitable for occasions where the measured object swings and cannot be fixed, and the allowable limit movement speed is high.
The LVDT displacement sensor is used for monitoring whether the pressure bearing support/the pressing support has deviation or falls off, a spring is arranged in the LVDT displacement sensor, elastic deformation is generated when the measuring rod is compressed, and external force is reduced or the measuring rod is automatically rebounded and reset after being removed. The LVDT displacement sensor has the characteristics of simple structure, good stability, long service life, high measurement precision, good sensitivity and the like, and is suitable for being installed on a non-rigid detection surface.
The temperature and humidity sensor is used for monitoring environment temperature and humidity, and the influence of the environment temperature on the response of the bridge expansion device can be analyzed through monitoring the environment temperature and humidity, so that the expansion state of the bridge expansion device can be reflected. Meanwhile, the air humidity has a great influence on the durability of the steel of the bridge expansion device. The monitoring of temperature and humidity in environmental monitoring is an important reference index for analyzing the state of a bridge expansion device and the damage development state of the bridge expansion device, and in addition, the temperature and humidity monitoring can provide reference data for the control of the working environment of system acquisition station equipment. The environment temperature and humidity measuring points are respectively arranged at the positions where the ventilation and the drying can avoid the direct sun exposure. The temperature and humidity sensor is widely applied to temperature and humidity monitoring in automatic monitoring of bridges, tunnels, slopes and the like, and has the characteristics of flexible operation, convenience in use, capability of increasing corresponding functions according to actual needs of customers and the like. The temperature and humidity sensor is internally provided with the channel protection module, so that the temperature and humidity sensor can be prevented from being damaged due to misoperation of a user. Wherein, temperature and humidity sensor can adopt single-chip sensor, and single-chip sensor contains the humiture composite sensor who calibrates digital signal output, and is compatible strong, adopts standard RS485 communication interface, can adopt the equipment and the system integration of RS485 interface with the majority.
The camera is installed in bridge telescoping device both ends head bottom surface, shoots towards the bridge telescoping device inboard for shoot the operation site conditions of bridge telescoping device in real time.
Further, the acquisition layer comprises a wireless node and a wireless gateway. The low-power LORA wireless acquisition system has a multi-channel acquisition function and is powered by a battery. The sensing layer is in wired access to the wireless nodes, the plurality of vibrating wire strain gauges, the crack sensors and the hinged displacement sensors are connected with one wireless gateway through cables according to the arrangement positions and the data sizes on the bridge expansion device, the plurality of LVDT displacement sensors and the temperature and humidity sensor are connected with another wireless gateway through cables, and the monitoring cameras at two ends of the bridge expansion device are connected with the other wireless gateway through cables. The acquisition layer is mainly used for acquiring signals such as stress strain, cracks, displacement, temperature and humidity, images and the like acquired by the sensors of the sensing layer. For example, the wireless node can automatically send acquisition instructions to each sensor at regular time, perform data acquisition on the static index system in units of 10 minutes to 60 minutes, convert each signal into data, and wirelessly transmit the data to the wireless gateway. The wireless gateway is base station equipment based on LoRaWAN protocol, is key equipment for constructing a low-power consumption wide area network, is used as a centralized coordinator in a system, receives wireless node data, and uploads the data to a service layer through a broadband, 4G, 3G or 5G by adopting a LORA communication mode.
Through laying based on thing networking monitoring sensor equipment, realize the monitoring of contents such as shaped steel meet an emergency, gallows crack, shaped steel clearance, based on wireless network transmission technology, in time feed back monitoring data to the surveillance center, the show telescoping device health status directly perceived. The wireless nodes are connected with the sensors in a wired mode, the nodes send sensor data to the wireless gateway in a wireless mode, the wireless gateway transmits the data to the cloud server through the operator network, and the data are analyzed, calculated, stored and displayed to relevant operators in the cloud server. Wherein the specific architecture used in the acquisition layer is shown in fig. 2.
Further, the service layer comprises a data storage module, a data analysis module, a data processing module and an alarm module.
The data storage module is connected to the wireless gateway (as shown in fig. 2, data transmission may be performed by using a 3G or 4G network, but is not limited thereto), and is configured to receive real-time monitoring data transmitted from the acquisition layer of the monitoring station, and meanwhile, is connected to the information display module of the client application layer.
The data analysis module is used for carrying out off-line analysis on the monitoring data acquired in real time according to time domain analysis (historical data comparison, trend analysis, time distribution, amplitude distribution, time comparison, measurement point comparison and correlation analysis) and frequency domain analysis (self-correlation analysis, cross-correlation analysis, peak spectrum, effective value spectrum, power spectral density and probability density distribution) aiming at different monitoring data of the data storage module, forming safety monitoring data after sorting, extracting the characteristics of the data by adopting a principal component analysis method, avoiding the over-fitting problem under the condition of large data quantity, carrying out data processing on a real-time monitoring data set according to the extracted characteristics through a MapReduce frame, calculating corresponding structural model parameters of the bridge expansion device, and automatically completing the parallelization of calculation tasks, automatically dividing the calculation data and the calculation tasks and finally storing the result data in the data processing module in a centralized mode.
The data processing module carries out further structural damage identification, safety early warning, structural state assessment and other processing on the analysis result of the data analysis module, the safety index parameters of the bridge expansion device are obtained according to the result data input by the data analysis module, the structural state assessment and the structural damage identification are obtained through the design index of the bridge expansion device and the comparative analysis of relevant standard specifications, and the comparative analysis of the safety states of the bridge expansion device under different environments, the structural damage identification is obtained, the safety monitoring data of the bridge expansion device of the data analysis module are input into the structural model of the corresponding bridge expansion device, the safety index parameters of the bridge expansion device under the current environment and stress state are obtained through calculation, structural loss identification is carried out, and efficient data support is provided for the information statistics module and the report management module of the client application layer. And transmitting the data exceeding the early warning threshold value to an alarm module, wherein the alarm module is connected with an alarm information module of the client application layer, and the early warning threshold value is set according to model analysis of the bridge expansion device and historical experience of monitoring of the bridge expansion device.
The alarm module is used for alarming according to the received alarm information.
In the invention, a data processing module segments monitoring data according to two dimensions of a threshold and time, and the specific mode is as follows: monitoring data is acquired based on different acquisition time, and the data is classified according to acquisition time periods; and segmenting the same-class data in each acquisition time according to the size of the data value, and dividing data indexes according to preset grades.
And evaluating and judging the whole monitoring data, namely dividing the same type of data into different grades based on data value indexes, and summarizing the index grades of the different types of data in the same time period to obtain the grade distribution condition of the monitoring data in the acquisition time period. Specific weight values are given to different types of data according to expert experience or actual monitoring requirements, higher weight values are given to monitoring data which are more critical to the health state of the structure, and lower weight values are given to relatively secondary monitoring data. Multiplying the level distribution condition of the monitoring data by the weight value to obtain a comprehensive index Q t ：
In the formula (I), the compound is shown in the specification,tin order to acquire a time period,ithe monitoring data category serial number is counted by n categories,a i is based oniThe weight value given to the seed monitoring data,C ti is composed oftWithin a time period ofiAnd (4) generating index grade according to the data value of the monitoring data.
And furthermore, the application layer is an interactive platform of a user and the platform, and realizes the three-dimensional display and query of on-site and remote monitoring data. The system mainly comprises an information display module, an information statistics module, an alarm information module and a report management module. The application layer has the main functions of providing functions of data networking configuration, measuring point deployment, data display, data analysis, alarm information configuration, statistical forms, damage diagnosis, limit state evaluation and the like for users.
The information display module is connected with the data storage module of the service layer and displays basic information, alarm information, statistical analysis data of the sensor equipment and a field video of the bridge expansion device.
The information statistical module is connected with the data processing module of the service layer, and a user can check the real-time data of each measuring point according to the needs of the user or compare the data of a plurality of measuring points.
The alarm information module is connected with the alarm module of the service layer and can check currently generated alarm information, including a measuring point name, an alarm level, an alarm type, alarm time, an alarm value and the like.
The report management module is connected with the alarm module of the service layer to provide a data report downloading function, and a user can select a measuring point and date to download a data report according to the requirement of the user, so that the user can conveniently manage the report.
Based on the above description, compared with the prior art, the bridge expansion device safety monitoring system provided by the invention further has the following advantages:
1) Providing a comprehensive monitoring mode
The invention provides a system for managing the bridge expansion device in the operation period, and establishes a health monitoring platform, wherein the platform comprises the acquisition, analysis, early warning and disposal of monitoring data of the bridge expansion device.
2) Compatible equipment is wide
The invention designs special displacement, crack, strain and other sensors, can be rapidly and seamlessly connected into other various sensing, acquisition and communication equipment in a one-stop mode, reserves interfaces for other hardware, and provides an online checking function of monitoring data.
3) Platform early warning capability
The invention effectively controls the use state and the development trend of the bridge expansion device in the operation period, diagnoses various abnormal conditions occurring in the operation period of the bridge expansion device in time, gives an early warning in time when the bridge expansion device is in a state close to a dangerous state, comprehensively evaluates the conditions of the bridge expansion device according to requirements, and finally ensures the safe operation of the bridge expansion device.
4) Periodic assessment
The invention can generate the evaluation report of the bridge expansion device every quarter according to the monitoring data and the construction characteristics, and has the functions of remote uploading and downloading.
5) Disaster recovery backup of data in different places
The invention provides a high-quality data storage, data synchronization and data management solution, and ensures the safety and reliability of data.
6) Establishing standard data model and interface
The invention can provide a standardized monitoring data model, a basic database and a data interface of each bridge expansion device. The system reserves standard data interface for expanding the follow-up analysis function service and exchanging service data with other systems.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the embodiment of the present invention are explained by applying specific examples, and the above description of the embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The utility model provides a bridge telescoping device safety monitoring system which characterized in that includes:
the sensing layer is used for acquiring monitoring data of the bridge expansion device in real time;
the service layer is connected with the sensing layer, is used for generating a monitoring result based on the monitoring data, is used for generating state information of the bridge expansion device based on the monitoring result, and is used for determining whether to generate alarm information based on the state information; the state information comprises a structural state and a damage state;
and the application layer is connected with the service layer and used for displaying information.
2. The bridge expansion device safety monitoring system of claim 1, further comprising:
and the acquisition layer is respectively connected with the sensing layer and the service layer and is used for forming a wireless channel between the sensing layer and the service layer.
3. The bridge expansion device safety monitoring system of claim 2, wherein the acquisition layer comprises: a wireless node and a wireless gateway.
4. The bridge expansion device safety monitoring system of claim 1, wherein the sensing layer comprises:
the vibrating wire type strain gauge is used for acquiring deformation data of the bridge expansion device;
the crack sensor is used for acquiring crack data of the bridge expansion device;
the hinged displacement sensor is used for acquiring displacement and gap data of the bridge expansion device;
the LVDT displacement sensor is used for acquiring the offset and falling data of the pressure bearing support/the pressing support in the bridge expansion device;
the temperature and humidity sensor is used for acquiring temperature and humidity data of the environment where the bridge expansion device is located;
the camera is used for collecting a field operation condition diagram of the bridge expansion device.
5. The bridge expansion device safety monitoring system of claim 4, wherein the articulated displacement sensor employs a rod transmission mode; and buffer strokes are arranged at two ends of the hinged displacement sensor.
6. The bridge expansion device safety monitoring system of claim 5, wherein the articulated displacement sensor comprises: a carbon film measuring unit and an anodized case; the carbon film measuring unit is built in the housing.
7. The bridge expansion device safety monitoring system of claim 5, wherein the measurement travel of the articulated displacement sensor is above 1 meter.
8. The bridge expansion device safety monitoring system of claim 1, wherein the service layer comprises:
the data analysis module is used for carrying out time domain analysis and frequency domain analysis on the monitoring data to obtain data characteristics and determining model parameters of the bridge expansion device based on the data characteristics;
the data processing module is connected with the data analysis module and used for generating state information of the bridge expansion device based on the model parameters and determining whether to generate alarm information based on the state information;
the data storage module is respectively connected with the data analysis module, the data processing module and the sensing layer and is used for receiving and storing the monitoring data, the model parameters, the state information and the alarm information;
and the alarm module is connected with the data processing module and used for generating an alarm signal based on the alarm information.
9. The bridge expansion device safety monitoring system of claim 8, wherein the application layer comprises:
the information display module is connected with the data storage module and used for displaying information;
the information statistical module is connected with the data processing module and used for displaying the monitoring data of each measuring point;
the alarm information module is connected with the alarm module and used for displaying the alarm information; the alarm information comprises: measuring point names, alarm levels, alarm types, alarm time and alarm values;
and the report management module is connected with the alarm module and is used for providing a data downloading function.
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| CA3039410A1 (en) * | 2018-04-06 | 2019-10-06 | Weir-Jones Engineering Consultants Ltd. | Systems and methods for monitoring structural integrity of slopes |
| CN111444252A (en) * | 2020-03-25 | 2020-07-24 | 重庆邮电大学 | Bridge monitoring system |
| CN112528564A (en) * | 2020-12-08 | 2021-03-19 | 中国矿业大学 | Bridge structure damage identification method based on sparse Bayesian learning |
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- 2022-10-26 CN CN202211314330.9A patent/CN115376303A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3039410A1 (en) * | 2018-04-06 | 2019-10-06 | Weir-Jones Engineering Consultants Ltd. | Systems and methods for monitoring structural integrity of slopes |
| CN111444252A (en) * | 2020-03-25 | 2020-07-24 | 重庆邮电大学 | Bridge monitoring system |
| CN112528564A (en) * | 2020-12-08 | 2021-03-19 | 中国矿业大学 | Bridge structure damage identification method based on sparse Bayesian learning |
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