CN115683233A - Multi-parameter monitoring device and method for modular bridge expansion device - Google Patents
Multi-parameter monitoring device and method for modular bridge expansion device Download PDFInfo
- Publication number
- CN115683233A CN115683233A CN202211532675.1A CN202211532675A CN115683233A CN 115683233 A CN115683233 A CN 115683233A CN 202211532675 A CN202211532675 A CN 202211532675A CN 115683233 A CN115683233 A CN 115683233A
- Authority
- CN
- China
- Prior art keywords
- sensor
- expansion device
- bridge expansion
- displacement sensor
- displacement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
A multi-parameter monitoring device and a method for a modular bridge expansion device belong to the technical field of bridge health monitoring; the device is a multi-sensor fusion system and comprises a displacement, a height, three-axis vibration, an ultrasonic guided wave transmitting and receiving probe and a water leakage cable sensor; according to the method, multi-sensor data processing is completed in a monitoring device host, original data of six-degree-of-freedom movement, seam width, bearing capacity, three-axis vibration amplitude, three-axis vibration frequency or cracks of a middle beam and water invasion of the bridge expansion device, disease alarms such as mechanical interference, vehicle overload, falling of a rubber support, breakage of the middle beam, breakage of a sealing rubber strip and the like are obtained, the monitoring device host sends the data and the alarm information to a cloud platform through a network to complete data aggregation and real-time display, and the operation state and potential diseases of the bridge expansion device are prompted. The method has the characteristics of comprehensive monitoring parameters, capability of accurately analyzing potential diseases of the bridge expansion device, capability of prompting potential risks of the bridge and strong popularization to other types of expansion devices.
Description
Technical Field
The invention belongs to the technical field of bridge health monitoring, and particularly relates to a multi-parameter monitoring device and method for a modulus bridge expansion device.
Background
The bridge is an important component of traffic transportation, the total number of highway bridges in China is close to 80 ten thousand, the total number of railway bridges is over 20 ten thousand, and the length is over 5 ten thousand kilometers at present. Meanwhile, the number of bridges in service in the maintenance period, which are in service in the road network in China, is increasing, more than 10 ten thousand bridges are critical bridges, about 40% of the bridges in service in the road network in China are in service for more than 20 years, the number of the bridges with diseases in the technical grades of three and four reaches 30%, and the number of the bridges in service in the maintenance period is increasing.
In the whole life cycle of a bridge, factors such as bridge load, earthquake, internal component aging and the like can cause damage to the bridge expansion device in different degrees and affect the performance of the bridge expansion device, the traditional methods such as manual visual observation and the like can only roughly judge whether damage occurs through apparent observation, the method mainly adopts manual experience, the main methods are visual observation and size measurement, unless the bridge expansion device is obviously damaged, problems are difficult to find and early warn, accurate and scientific data support is lacked, an accurate analysis model and a corresponding relation cannot be established, the real health condition of the bridge expansion device cannot be reflected, and great limitation exists.
At present, the main problems faced by the bridge expansion device monitoring technology can be summarized as follows:
(1) The monitoring parameters are not comprehensive enough. The existing monitoring technology and large-scale products only monitor single parameters and single problems, the safety monitoring of the bridge expansion device is comprehensive problems of stress, deformation, fatigue, vibration, temperature and environment, and the existing monitoring method does not design the monitoring device from the perspective of requirements, so that the monitoring parameters are not comprehensive enough, and the running state of the bridge expansion device cannot be comprehensively reflected.
(2) The data summarization and analysis method is backward and has low intelligent degree. Emerging wireless communication technology is not applied to monitoring technology, and the wired and local transmission technology cannot cover the important requirement of monitoring a super-large bridge, so that data fragmentation and poor data collection capability are caused. In addition, edge computing, cloud computing and artificial intelligence technologies are not applied in a large scale, the analysis capability of the collected data is weak, and the results of safety monitoring, accident early warning and life analysis are not accurate enough.
(3) The monitoring technology method is backward and has low precision. The monitoring technology still stays at the appearance measurement stage of parameters such as strain, bearing capacity and deformation, the monitoring capability of the monitoring technology on potential diseases such as vibration, fatigue, cracks, abrasion and water leakage is insufficient, and new methods and new technologies in other fields are not applied to the field of monitoring of bridge expansion devices.
Disclosure of Invention
The invention aims to overcome the defects that the bridge expansion device in the prior art has insufficient monitoring means, single monitoring parameter and can not establish a comprehensive monitoring system, and provides a multi-parameter monitoring device and a multi-parameter monitoring method suitable for the bridge expansion device. The invention adopts an intelligent rubber support, a displacement sensor, a height sensor, a triaxial vibration sensor, an ultrasonic guided wave transmitting and receiving probe and a water leakage cable sensor to construct a bridge expansion device multi-parameter monitoring device, realizes the monitoring of six-degree-of-freedom motion, seam width and mechanical interference of the expansion device by combining the measurement data of the displacement sensor and the height sensor and the spatial installation position thereof, realizes the monitoring of vehicle overload and rubber support falling by combining the stress data of the intelligent rubber support, realizes the monitoring of middle beam fracture by combining the measurement data of the triaxial vibration sensor and vibration spectrum analysis or ultrasonic echo signals, realizes the monitoring of sealing rubber strip breakage by combining the resistance change of the water leakage cable sensor, and a host of the bridge expansion device multi-parameter monitoring device can send the original data and alarm information to a cloud platform through a wired network or a wireless network to finish data summation and real-time display, thereby prompting the running state and potential diseases of the monitored analog-digital bridge expansion device.
The technical solution of the invention is as follows:
a multi-parameter monitoring device for an analog-digital bridge expansion device comprises an edge beam of the monitored analog-digital bridge expansion device, a middle beam of the monitored analog-digital bridge expansion device, a cross beam of the monitored analog-digital bridge expansion device, an intelligent rubber support of the monitored analog-digital bridge expansion device, a first displacement sensor, a second displacement sensor, a third displacement sensor, a fourth displacement sensor, a fifth displacement sensor, a first height sensor, a second height sensor, a third height sensor, a fourth height sensor, a first installation type of a three-axis vibration sensor, a second installation type of a three-axis vibration sensor or an ultrasonic guided wave transmitting and receiving probe, and a water leakage cable sensor, wherein the first displacement sensor is installed at a position close to the center of the edge beam, the second displacement sensor and the third displacement sensor are installed on the edge beam and are symmetrically arranged at a distance D1 with the first displacement sensor, displacement sensor one, displacement sensor two, displacement sensor three are used for measuring the displacement of place mounted position to the position at another boundary beam center respectively, displacement sensor four and displacement sensor five are installed on the boundary beam and are close two ends, the distance that is monitored the perpendicular traffic lane of modulus formula bridge telescoping device respectively is D2, it is used for measuring the perpendicular displacement of place mounted position to another boundary beam respectively to move sensor four and displacement sensor five, height sensor one is installed on another boundary beam and is close central point and put, height sensor two is installed on the boundary beam and is close central point and put, height sensor three, height sensor four are installed on the middle beam in the middle of modulus formula bridge telescoping device and are close two ends, the distance that is monitored the perpendicular traffic lane of modulus formula bridge telescoping device respectively is D3, height sensor one, displacement sensor three, displacement sensor, the height sensor II, the height sensor III and the height sensor IV are respectively used for measuring the height of the installation position relative to a fixed height reference point, the triaxial vibration sensor installation type I is installed on a supporting structure connected with a middle beam below an intelligent rubber support, the triaxial vibration sensor installation type II or an ultrasonic guided wave transmitting and receiving probe is installed on the middle beam, the water leakage cable sensor is installed below a monitored analog-digital bridge expansion device in a serpentine and zigzag mode and is distributed in a large range as much as possible, and the intelligent rubber support, the displacement sensor I, the displacement sensor II, the displacement sensor III, the displacement sensor IV, the displacement sensor V, the height sensor I, the height sensor II, the height sensor III, the height sensor IV, the triaxial vibration sensor installation type I, the triaxial vibration sensor installation type II or the ultrasonic guided wave transmitting and receiving probe and the water leakage cable sensor are respectively connected with a host of the analog-digital bridge expansion device through cables to form signals and power supply paths.
The modulus type bridge expansion device comprises a plurality of center beams and an intelligent rubber support, a plurality of three-axis vibration sensor installation types I and three-axis vibration sensor installation types II or ultrasonic guided wave transmitting and receiving probes can be arranged at the position, where the center beams are easy to break, of the intelligent rubber support, and the type, where the three-axis vibration sensor installation types I and the three-axis vibration sensor installation types II or the ultrasonic guided wave transmitting and receiving probes represent the sensor installation positions, of the center beams and the center beams are respectively arranged below the intelligent rubber support and on a supporting structure connected with the center beams.
The intelligent rubber support internally comprises a force measuring sensing element which can measure the supporting force loaded on the intelligent rubber support.
The first displacement sensor, the second displacement sensor, the third displacement sensor, the fourth displacement sensor and the fifth displacement sensor can be laser displacement sensors or contact type displacement sensors.
The height sensor I, the height sensor II, the height sensor III and the height sensor IV can measure the height between the installation position and a fixed height datum point, and can be a level sensor, a laser displacement sensor or a contact type displacement sensor, and the fixed height datum point can be selected at any fixed position of the bridge.
The intelligent rubber support, the first displacement sensor, the second displacement sensor, the third displacement sensor, the fourth displacement sensor, the fifth displacement sensor, the first height sensor, the second height sensor, the third height sensor, the fourth height sensor, the first three-axis vibration sensor installation type, the second three-axis vibration sensor installation type or all or part of the components in the ultrasonic guided wave transmitting and receiving probe and the water leakage cable sensor can be selectively installed according to actual monitoring requirements.
And an ultrasonic guided wave transmitting and receiving probe is also arranged at the position of the second installation type of the three-axis vibration sensor and is used for coupling ultrasonic waves into the middle beam at the installation position and receiving ultrasonic echo signals.
When the monitoring bridge expansion device does not belong to an analog-digital bridge expansion device, a monitoring system can be arranged according to the installation positions and functions of a first displacement sensor, a second displacement sensor, a third displacement sensor, a fourth displacement sensor, a fifth displacement sensor, a first height sensor, a second height sensor, a third height sensor, a fourth height sensor, a first installation type of a three-axis vibration sensor, a second installation type of a three-axis vibration sensor or an ultrasonic guided wave transmitting and receiving probe and a water leakage cable sensor in the analog-digital bridge expansion device multi-parameter monitoring device, and the multi-parameter monitoring function of the bridge expansion device can also be realized.
A multi-parameter monitoring method for an analog-digital bridge expansion device is characterized in that a host of the multi-parameter monitoring device for the analog-digital bridge expansion device collects and processes measurement data of an intelligent rubber support, a first displacement sensor, a second displacement sensor, a third displacement sensor, a fourth displacement sensor, a fifth displacement sensor, a first height sensor, a second height sensor, a third height sensor, a fourth height sensor, a first installation type of a three-axis vibration sensor, a second installation type of the three-axis vibration sensor or ultrasonic guided wave transmitting and receiving probe and a water leakage cable sensor to obtain alarm information of diseases such as six-degree-of-freedom motion, seam width, bearing capacity, three-axis vibration amplitude, three-axis vibration frequency and water invasion in the operation of the monitored analog-digital bridge expansion device, and the like, and the host of the multi-parameter monitoring device for the analog-digital bridge expansion device can further analyze the data and can also obtain mechanical interference, vehicle overload, rubber support falling, middle beam breakage and sealing rubber strip breakage in the operation of the monitored analog-digital bridge expansion device, and the host of the analog-digital bridge expansion device can send the raw data and the raw data to a cloud expansion device display alarm information of the cloud expansion device in real-time through a wired or wireless network.
The relation between the original six-degree-of-freedom motion data of the analog-digital bridge expansion device and the measurement result Disp1 of the first displacement sensor, the measurement result Disp2 of the second displacement sensor, the measurement result Disp3 of the third displacement sensor, the measurement result Disp4 of the fourth displacement sensor, the measurement result Disp5 of the fifth displacement sensor, the measurement result H1 of the first height sensor, the measurement result H2 of the second height sensor, the measurement result H3 of the third height sensor, the measurement result H4 of the fourth height sensor and the spatial installation position thereof is that the linear displacement along the driving direction is Disp1, and the rotation angle is Disp1
Linear displacement in the direction perpendicular to the travelling direction
Corner is
The linear displacement in the vertical bridge surface direction is H1-H2, and the corner is
The distance between the second displacement sensor and the third displacement sensor and the first displacement sensor is D1, the distance between the third displacement sensor and the fourth displacement sensor is D2, the distance between the third height sensor and the fourth height sensor is D3, after the original six-degree-of-freedom movement data of the analog-digital bridge expansion device are obtained, the seam width of the middle beams can be calculated according to the number of the middle beams of the analog-digital bridge expansion device, whether mechanical contact occurs between the middle beams is judged, the alarm information of mechanical interference in the movement of the analog-digital bridge expansion device is obtained, and the original six-degree-of-freedom movement data of the analog-digital bridge expansion device and the alarm information of mechanical interference are calculated in the host of the analog-digital bridge expansion device multi-parameter monitoring device.
The monitored bearing capacity measurement result of each intelligent rubber support of the modular bridge expansion device comprises the pretightening force of the intelligent rubber support and the load capacity of a vehicle passing through the modular bridge expansion device, the measurement result of each intelligent rubber support is the pretightening force F1 when no vehicle passes through the modular bridge expansion device, the measurement result of each intelligent rubber support is F3 when a vehicle passes through the modular bridge expansion device, the axle weight of the vehicle passing through the modular bridge expansion device is F3 minus F1, the pretightening force F1 and the axle weight of the vehicle can be respectively used for judging whether each rubber support has falling risk and overload alarm information, the pretightening force of each intelligent rubber support and the load capacity of the vehicle passing through the modular bridge expansion device are calculated in the host of the modular bridge expansion device, and the overload and rubber support falling alarm information of the vehicle are obtained.
The sampling rate of each triaxial vibration is not lower than 200 Hz, the single sampling time is not lower than 1 second, each triaxial vibration sensor acquires acceleration data once, then discrete Fourier transform is respectively carried out on the three measurement shaft data to obtain a vibration frequency spectrum, the amplitudes of the maximum amplitude frequency points of the three measurement shaft vibration frequency spectra are compared, the amplitude, the frequency and the vibration shaft of the maximum amplitude frequency point of the measurement shaft with the maximum amplitude are used as output data of each triaxial vibration sensor and are transmitted to the analog-digital bridge expansion device multi-parameter monitoring device host, the analog-digital bridge expansion device multi-parameter monitoring device host compares the amplitude and the frequency of each triaxial vibration sensor with a set threshold, and when the amplitude of each triaxial vibration sensor is larger than the threshold, the analog-digital bridge expansion device multi-parameter monitoring device host lists the falling of a rubber support and the middle girder breakage of the installation position of the triaxial vibration sensor into alarm information.
Wherein, when modulus formula bridge telescoping device's sealing rubber strip breakage back, the rainwater will be through modulus formula bridge telescoping device's sealing rubber strip and the cable sensor contact that leaks, leak the cable sensor optional position and contact the back with water, the resistance of the cable sensor that leaks can reduce, and modulus formula bridge telescoping device multi-parameter monitoring device host computer measures the resistance of the cable sensor that leaks, and when the resistance of the cable sensor that leaks was less than and sets up the threshold value, can obtain sealing rubber strip breakage alarm information.
When the ultrasonic guided wave transmitting and receiving probe replaces a second installation type of a triaxial vibration sensor, the crack-free ultrasonic echo signal of the middle beam can be compared with the real-time measured ultrasonic echo signal, and the crack position and the crack depth of the middle beam (12) are evaluated according to the amplitude and the phase change of the ultrasonic echo signal.
When the monitoring bridge expansion device does not belong to the analog-digital bridge expansion device, multi-parameter monitoring and data processing of other types of bridge expansion devices can be implemented according to the method, and the multi-parameter monitoring function of the bridge expansion device can also be realized.
The invention has the advantages that:
1. the monitoring parameters are comprehensive. The invention realizes the high-precision monitoring of a plurality of original operation parameters of the bridge expansion device, such as six-degree-of-freedom motion, seam width, bearing capacity, three-axis vibration amplitude, three-axis vibration frequency, ultrasonic guided wave signal characteristics and water invasion by fusing a plurality of sensors, such as an intelligent rubber support, a displacement sensor, a height sensor, a three-axis vibration sensor, a water leakage cable sensor and the like.
2. The potential diseases of the bridge expansion device can be accurately analyzed. The invention combines the causes and the results of the damage of the bridge expansion device to deeply analyze the original data collected by the sensor, and can obtain accurate alarm information of the damage of mechanical interference, vehicle overload, rubber support drop, middle beam fracture, sealing rubber strip breakage and the like in the movement of the bridge expansion device.
3. Data can be remotely transmitted to the cloud server and the potential risks of the bridge are prompted. The host of the bridge expansion device multi-parameter monitoring device can send the original data and the alarm information to a cloud platform through a wired or wireless network to complete data aggregation and real-time display, and remotely prompt the accurate running state and potential diseases of the monitored bridge expansion device of a bridge management and maintenance unit.
4. The popularization to other types of telescoping devices is strong. According to the basic principle of the bridge expansion device, when the monitoring bridge expansion device does not belong to the analog-digital bridge expansion device, a monitoring system can be arranged according to the installation positions of a displacement sensor, a height sensor, a three-axis vibration sensor and a water leakage cable sensor in the analog-digital bridge expansion device multi-parameter monitoring device, and the multi-parameter monitoring function of other types of bridge expansion devices can also be realized by adopting the same data processing mode.
Drawings
FIG. 1 is a schematic view of a multi-parameter monitoring device for an analog-digital bridge expansion device;
in the figure: 11. the method comprises the steps of side beams of a monitored analog-digital bridge expansion device, 12 middle beams of the monitored analog-digital bridge expansion device, 13 cross beams of the monitored analog-digital bridge expansion device, 14 intelligent rubber supports of the monitored analog-digital bridge expansion device, 15 displacement sensors I, 16 displacement sensors II, 17 displacement sensors III, 18 displacement sensors IV, 19 displacement sensors V, 20 height sensors I, 21 height sensors II, 22 height sensors III, 23 height sensors IV, 24 triaxial vibration sensors I, 25 triaxial vibration sensors II or ultrasonic guided wave transmitting and receiving probes, and 26 water leakage cable sensors.
FIG. 2 is a schematic view of the principle of measuring the linear displacement of the bridge expansion device along the vertical driving direction.
Fig. 3 is a schematic view of the principle of measuring the rotation angle of the bridge expansion device along the driving direction.
Fig. 4 is a schematic view of a bridge expansion device for measuring a rotation angle in a direction perpendicular to a driving direction.
FIG. 5 is a schematic view of the principle of measuring the vertical bridge deck direction corner of the bridge expansion device.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
a multi-parameter monitoring device for an analog-digital bridge expansion device comprises an edge beam 11 of the monitored analog-digital bridge expansion device, a middle beam 12 of the monitored analog-digital bridge expansion device, a cross beam 13 of the monitored analog-digital bridge expansion device, an intelligent rubber support 14 of the monitored analog-digital bridge expansion device, a first displacement sensor 15, a second displacement sensor 16, a third displacement sensor 17, a fourth displacement sensor 18, a fifth displacement sensor 19, a first height sensor 20, a second height sensor 21, a third height sensor 22, a fourth height sensor 23, a first installation type 24 of a three-axis vibration sensor, a second installation type of the three-axis vibration sensor or an ultrasonic guided wave transmitting and receiving probe 25 and a water leakage cable sensor 26, wherein the first displacement sensor 15 is installed at a position close to the center of an edge beam 11b, the second displacement sensor 16 and the third displacement sensor 17 are installed on the edge beam 11b and are symmetrically arranged with a distance D1 from the first displacement sensor 15, displacement sensor 15, displacement sensor 16, displacement sensor 17 are used for measuring the displacement of place mounted position to the position at another boundary beam 11a center respectively, displacement sensor 18 and displacement sensor five 19 are installed on boundary beam 11b and are close to two ends, the distance D2 in the monitored module type bridge expansion device vertical traffic lane respectively, displacement sensor 18 and displacement sensor five 19 are used for measuring the place mounted position to the vertical displacement of another boundary beam 11a respectively, height sensor 20 is installed on another boundary beam 11a and is close to central point, height sensor 21 is installed on boundary beam 11b and is close to central point, height sensor 22, height sensor 23 are installed on the middle beam 12b in the middle of the module type bridge expansion device and are close to two ends, the monitored module type bridge expansion device vertical traffic lane respectively, the distance is D3, the first height sensor 20, the second height sensor 21, the third height sensor 22 and the fourth height sensor 23 are used for measuring the height of the installation position relative to a fixed height reference point respectively, the first three-axis vibration sensor installation type 24 is installed on a supporting structure connected with the middle beam 12 below the intelligent rubber support 14, the second three-axis vibration sensor installation type or ultrasonic guided wave transmitting and receiving probe 25 is installed on the middle beam 12, the water leakage cable sensor 26 is installed below the monitored analog-digital bridge expansion device in a snake-shaped zigzag mode and is distributed as large as possible, the intelligent rubber support 14, the first displacement sensor 15, the second displacement sensor 16, the third displacement sensor 17, the fourth displacement sensor 18, the fifth displacement sensor 19, the first height sensor 20, the second height sensor 21, the third height sensor 22, the fourth height sensor 23, the first three-axis vibration sensor installation type 24, the second three-axis vibration sensor installation type or ultrasonic guided wave transmitting and receiving probe 25 and the water leakage cable sensor 26 are connected with a multi-parameter bridge expansion device host through cables to form signals and power supply monitoring access device.
The modulus type bridge expansion device comprises a plurality of center sills 12 and intelligent rubber supports 14, a plurality of three-axis vibration sensor installation types I24 and three-axis vibration sensor installation types II or ultrasonic guided wave transmitting and receiving probes 25 can be arranged at positions where the center sills 12 are prone to breaking and the intelligent rubber supports 14 are prone to breaking, and the three-axis vibration sensor installation types I24 and the three-axis vibration sensor installation types II or the ultrasonic guided wave transmitting and receiving probes 25 represent sensor installation positions and are respectively arranged on a supporting structure connected with the center sills 12 below the intelligent rubber supports 14 and on the center sills 12.
Wherein, the intelligent rubber support 14 contains a force measuring sensing element inside, and can measure the supporting force loaded on the intelligent rubber support 14.
The first displacement sensor 15, the second displacement sensor 16, the third displacement sensor 17, the fourth displacement sensor 18 and the fifth displacement sensor 19 can be laser displacement sensors or contact displacement sensors.
The height sensors 20, 21, 22 and 23 can measure the height between the installation position and a fixed height datum point, and can be level sensors, laser displacement sensors or contact type displacement sensors, and the fixed height datum point can be selected at any fixed position of the bridge.
The monitored analog-digital bridge expansion device multi-parameter monitoring device can select all or part of the intelligent rubber support 14, the first displacement sensor 15, the second displacement sensor 16, the third displacement sensor 17, the fourth displacement sensor 18, the fifth displacement sensor 19, the first height sensor 20, the second height sensor 21, the third height sensor 22, the fourth height sensor 23, the first three-axis vibration sensor installation type 24, the second three-axis vibration sensor installation type or ultrasonic guided wave transmitting and receiving probe 25 and the water leakage cable sensor 26 to be installed according to actual monitoring requirements.
Wherein, the position of the second 25 type of shaft vibration sensor installation is also provided with an ultrasonic guided wave transmitting and receiving probe which is used for coupling ultrasonic waves into the center sill 12 at the installation position and receiving ultrasonic echo signals.
When the monitoring bridge expansion device does not belong to the analog-digital bridge expansion device, a monitoring system can be arranged according to the installation positions and functions of a first displacement sensor 15, a second displacement sensor 16, a third displacement sensor 17, a fourth displacement sensor 18, a fifth displacement sensor 19, a first height sensor 20, a second height sensor 21, a third height sensor 22, a fourth height sensor 23, a first three-axis vibration sensor installation type 24, a second three-axis vibration sensor installation type or an ultrasonic guided wave transmitting and receiving probe 25 and a water leakage cable sensor 26 in the analog-digital bridge expansion device multi-parameter monitoring device, and the multi-parameter monitoring function of the bridge expansion device can also be realized.
A multi-parameter monitoring method for an analog-digital bridge expansion device is characterized in that a monitored intelligent rubber support 14, a displacement sensor I15, a displacement sensor II 16, a displacement sensor III 17, a displacement sensor IV 18, a displacement sensor V19, a height sensor I20, a height sensor II 21, a height sensor III 22, a height sensor IV 23, a three-axis vibration sensor installation type I24, a three-axis vibration sensor installation type II or ultrasonic guided wave transmitting and receiving probe 25 and a water leakage cable sensor 26 of the analog-digital bridge expansion device are collected through a host of the analog-digital bridge expansion device, and measured data of the monitored analog-digital bridge expansion device in operation, such as six-degree-of-freedom motion, seam width, bearing capacity, three-axis vibration amplitude, three-axis vibration frequency and water invasion raw data are obtained and processed.
Wherein, the relation between the original six-freedom-degree motion data of the analog-digital bridge expansion device and the measurement result Disp1 of the first displacement sensor 15, the measurement result Disp2 of the second displacement sensor 16, the measurement result Disp3 of the third displacement sensor 17, the measurement result Disp4 of the fourth displacement sensor 18, the measurement result Disp5 of the fifth displacement sensor 19, the measurement result H1 of the first height sensor 20, the measurement result H2 of the second height sensor 21, the measurement result H3 of the third height sensor 22, the measurement result H4 of the fourth height sensor 23 and the spatial installation position thereof is that the linear displacement along the driving direction is Disp1, and the rotation angle is Disp1
Linear displacement in the direction perpendicular to the travelling direction
Corner is
The linear displacement in the vertical bridge surface direction is H1-H2, and the corner is
After the original data of the movement of the analog-digital bridge expansion device in six degrees of freedom are obtained, the width of the seam of the middle beam 12 can be calculated according to the number of the middle beams 12 of the analog-digital bridge expansion device so as to judge whether the middle beams 12 are in mechanical contact or not, so that the alarm information of mechanical interference in the movement of the analog-digital bridge expansion device can be obtained, and the original data of the movement of the analog-digital bridge expansion device in six degrees of freedom and the alarm information of the mechanical interference can be calculated in the host of the multi-parameter monitoring device of the analog-digital bridge expansion device.
The monitored bearing capacity measurement result of each intelligent rubber support 14 of the modular bridge expansion device comprises the pretightening force of each intelligent rubber support 14 and the load capacity of a vehicle passing through the modular bridge expansion device, the measurement result of each intelligent rubber support 14 is the pretightening force F1 when no vehicle passes through the modular bridge expansion device, the measurement result of each intelligent rubber support 14 is F3 when a vehicle passes through the modular bridge expansion device, the axle load of the vehicle passing through the modular bridge expansion device is F3 minus F1, the pretightening force F1 and the axle load of the vehicle can be respectively used for judging whether each rubber support has falling risk and overload alarm information, the pretightening force of each intelligent rubber support 14 and the load capacity of the vehicle passing through the modular bridge expansion device are calculated in a host of the modular bridge expansion device, and vehicle overload and rubber support falling alarm information are obtained.
The sampling rate of each triaxial vibration is not lower than 200 Hz, the single sampling time is not lower than 1 second, each triaxial vibration sensor acquires acceleration data once, then discrete Fourier transform is respectively carried out on the three measurement shaft data to obtain a vibration frequency spectrum, the amplitudes of the maximum amplitude frequency points of the three measurement shaft vibration frequency spectra are compared, the amplitude, the frequency and the vibration shaft of the maximum amplitude frequency point of the measurement shaft with the maximum amplitude are used as output data of each triaxial vibration sensor and are transmitted to the analog-digital bridge expansion device multi-parameter monitoring device host, the analog-digital bridge expansion device multi-parameter monitoring device host compares the amplitude and the frequency of each triaxial vibration sensor with a set threshold, and when the amplitude of each triaxial vibration sensor is larger than the threshold, the analog-digital bridge expansion device multi-parameter monitoring device host lists the falling of a rubber support and the middle girder breakage of the installation position of the triaxial vibration sensor into alarm information.
Wherein, when modulus formula bridge telescoping device's sealing rubber strip breakage back, the rainwater will be through modulus formula bridge telescoping device's sealing rubber strip and the cable sensor 26 contact that leaks, leak behind cable sensor 26 optional position and the water contact, the resistance of the cable sensor 26 that leaks can reduce, the resistance of the cable sensor 26 that leaks is measured to modulus formula bridge telescoping device multi-parameter monitoring device host computer, when the resistance of the cable sensor 26 that leaks is less than the threshold value, can obtain the breakage alarm information of sealing rubber strip.
When the ultrasonic guided wave transmitting and receiving probe replaces the second mounting type 25 of the triaxial vibration sensor, the crack-free ultrasonic echo signal of the middle beam 12 can be compared with the ultrasonic echo signal measured in real time, and the crack position and depth of the middle beam 12 can be evaluated according to the amplitude and phase changes of the ultrasonic echo signal.
When the monitoring bridge expansion device does not belong to the analog-digital bridge expansion device, multi-parameter monitoring and data processing of other types of bridge expansion devices can be implemented according to the method, and the multi-parameter monitoring function of the bridge expansion device can also be realized.
The working principle of the invention is as follows:
1. the six-degree-of-freedom motion original data processing process of the bridge expansion device comprises the following steps:
(1) Under the condition of reasonable approximation, the bridge expansion device can adopt a measurement result Disp1 of a first displacement sensor 15 to represent the linear displacement along the driving direction.
(2) Under the reasonable approximate condition of the linear displacement of the bridge expansion device along the vertical driving direction, the displacement measurement data of the first displacement sensor 15, the second displacement sensor 16 and the third displacement sensor 17 and the right triangle relation formed by the displacements in the figure 2 can be adopted:
thus, the linear displacement Δ y of the bridge girder retractor device in the direction perpendicular to the driving direction can be expressed as
(3) The bridge expansion device linearly displaces in the direction of a vertical bridge surface, and height measurement data of the first height sensor 20 and the second height sensor 21 can be represented as H1-H2.
(4) The bridge expansion device can adopt the height measurement data of the three height sensors 22 and the four height sensors 23 and the right triangle relation in figure 3 to be represented as follows
(5) The bridge expansion device can adopt height measurement data of a first height sensor 20 and a second height sensor 21, displacement measurement data of a first displacement sensor 15 and right triangle relation in figure 4 under the condition of reasonable approximation of the vertical driving direction rotation angle
(6) The vertical bridge deck direction corner of the bridge expansion device can be represented by displacement measurement data of a displacement sensor four 18 and a displacement sensor five 19 and a right triangle relation in figure 5 under the reasonable approximate condition
2. And (3) processing data of the bridge expansion device center beam seam width and mechanical interference alarm. After the linear displacement along the driving direction in the original six-degree-of-freedom motion data of the bridge expansion device is obtained, the distance between the middle beams 12 is calculated according to the width and the number of the middle beams 12 of the bridge expansion device, and the distance is the seam width. If the distance between the center sills is larger than zero, no mechanical interference disease exists; if the distance between the middle beams is smaller than zero, mechanical interference is caused.
3. And (3) carrying capacity of the bridge expansion device, vehicle overload and rubber support falling alarm data processing process. The bearing capacity measurement result of each intelligent rubber support 14 comprises a pretightening force of the intelligent rubber support 14 and a load capacity of a vehicle passing through the bridge expansion device, the measurement result of each intelligent rubber support 14 is a pretightening force F1 when no vehicle passes through the bridge expansion device, the measurement result of each intelligent rubber support 14 is F3 when a vehicle passes through the bridge expansion device, and the axle weight of the vehicle passing through the bridge expansion device is F3 minus F1. If the pretightening force F1 is smaller than the threshold value, the rubber support is in the risk of falling off. And if the axle load of the vehicle is greater than the threshold value, the vehicle is overloaded through the bridge expansion device.
4. And (3) a triaxial vibration amplitude and a triaxial vibration frequency of the bridge expansion device, a rubber support falling off process and a middle beam fracture alarm data processing process. After acquiring acceleration data once, each triaxial vibration sensor respectively carries out discrete Fourier transform on the three measurement axis data to obtain a vibration frequency spectrum, the amplitudes of the maximum amplitude frequency points of the three measurement axis vibration frequency spectrums are compared, the amplitude, the frequency and the vibration axis of the maximum amplitude frequency point of the measurement axis with the maximum amplitude are taken as output data of each triaxial vibration sensor, the amplitude and the frequency of each triaxial vibration sensor are compared with a set threshold value, when the amplitude of each triaxial vibration sensor is larger than the threshold value, the mechanical connection state of the installation position of the triaxial vibration sensor is changed, probably caused by the fact that a support near the installation position falls off or a middle beam breaks, and the middle beam of the installation position of the triaxial vibration sensor is listed in middle beam breakage alarm information.
5. And a data processing process of water invasion and sealing rubber strip breakage alarm of the bridge expansion device. After bridge telescoping device's sealing rubber strip is damaged, the rainwater will contact with the cable sensor 26 that leaks through bridge telescoping device's sealing rubber strip, after the cable sensor 26 optional position that leaks contacted with water, the resistance of the cable sensor 26 that leaks can reduce, and modulus formula bridge telescoping device multi-parameter monitoring devices host computer measures the resistance of the cable sensor 26 that leaks, and when the resistance of the cable sensor 26 that leaks was less than and sets up the threshold value, can obtain the damaged alarm information of sealing rubber strip.
6. When the ultrasonic guided wave transmitting and receiving probe replaces a triaxial vibration sensor to implement the monitoring of the fracture of the middle beam, the ultrasonic guided wave transmitting and receiving probe is arranged at the position of the second installation type of the triaxial vibration sensor and is used for coupling ultrasonic waves into the middle beam at the installation position and receiving ultrasonic echo signals, and the ultrasonic echo signals without cracks of the middle beam can be compared with the ultrasonic echo signals measured in real time. The principle is that when microcracks are generated in the middle beam, the echo amplitude of the ultrasonic guided waves and the crack depth are enhanced, and the phase and the crack position are changed, so that the crack position and the crack depth of the middle beam can be evaluated according to the amplitude and the phase of the acoustic echo signals.
The multi-parameter monitoring device and method for the modular bridge expansion device have the technical innovation points and beneficial technical effects that: the invention utilizes the integration of multiple sensors such as an intelligent rubber support, a displacement sensor, a height sensor, a three-axis vibration sensor, an ultrasonic guided wave transmitting and receiving probe, a water leakage cable sensor and the like to realize the monitoring of multiple original operation parameters of the bridge expansion device, such as six-degree-of-freedom motion, seam width, bearing capacity, three-axis vibration amplitude, three-axis vibration frequency, ultrasonic echo signal characteristics and water invasion; meanwhile, the original data collected by the sensor are deeply analyzed by combining the reasons and the results of the damage of the bridge expansion device, and further alarm information of the damage of the bridge expansion device, such as mechanical interference, vehicle overload, falling of a rubber support, breakage of a center sill, breakage of a sealing rubber strip and the like in the movement process is obtained; the host of the multi-parameter monitoring device for the bridge expansion device can send the original data and the alarm information to a cloud platform through a wired or wireless network to complete data aggregation and real-time display, and remotely prompt the operation state and potential diseases of the monitored bridge expansion device for a bridge management and maintenance unit; the monitoring system is strong in popularization to other types of expansion devices, when the monitoring bridge expansion device does not belong to an analog-digital bridge expansion device, a monitoring system can be arranged according to the installation positions of a displacement sensor, a height sensor, a three-axis vibration sensor, an ultrasonic guided wave transmitting and receiving probe and a water leakage cable sensor in the analog-digital bridge expansion device multi-parameter monitoring device, and the multi-parameter monitoring function of the bridge expansion device can also be realized by adopting the same data processing mode.
Claims (15)
1. The utility model provides a modulus formula bridge telescoping device multi-parameter monitoring devices, including boundary beam (11) of the modulus formula bridge telescoping device that monitors, well roof beam (12) of the modulus formula bridge telescoping device that monitors, crossbeam (13) of the modulus formula bridge telescoping device that monitors, intelligent rubber support (14) of the modulus formula bridge telescoping device that monitors, displacement sensor (15), displacement sensor (16), displacement sensor (17), displacement sensor (18), displacement sensor (19), height sensor (20), height sensor (21), height sensor (22), height sensor (23), three-axis vibration sensor installation type one (24), three-axis vibration sensor installation type two or supersound guided wave transmission and receiving probe (25), water leakage cable sensor (26), install in the position that is close boundary beam (11 b) center displacement sensor (15), displacement sensor (16) and displacement sensor (17) three (17) are installed on boundary beam (11 b) and are D1 symmetrical arrangement with displacement sensor (15) distance, displacement sensor (15), displacement sensor (16) two, displacement sensor (17) are installed in another displacement sensor (11 b) and displacement sensor (18) are used for displacement sensor (11 a) and displacement sensor (11 b) are installed respectively to be used for displacement sensor (11 b) and displacement sensor (11) on another boundary beam (11 b) and displacement sensor (18) displacement sensor (11 b) the displacement sensor (18) of monitoring, displacement sensor (11) are installed respectively Two tail ends of the vertical lane of the analog-digital bridge expansion device and a distance are D2, a fourth sensor (18) and a fifth displacement sensor (19) are respectively used for measuring the vertical displacement from the installation position to another side beam (11 a), a first height sensor (20) is installed on another side beam (11 a) and is close to the central position, a second height sensor (21) is installed on the side beam (11 b) and is close to the central position, a third height sensor (22) and a fourth height sensor (23) are installed on a middle beam (12 b) in the middle of the analog-digital bridge expansion device and are respectively close to two tail ends and a distance of the vertical lane of the analog-digital bridge expansion device to be monitored and are D3, a first height sensor (20), a second height sensor (21), a third height sensor (22) and a fourth height sensor (23) are respectively used for measuring the height between the installation position and a fixed height reference point, a first triaxial vibration sensor installation type (24) is installed on a supporting structure connected with the middle beam (12) below the intelligent rubber support (14), a second vibration sensor installation type (25) and a third ultrasonic transmission probe (16) and a first displacement sensor (14) and a large displacement sensor (16) and a monitored displacement sensor (14) and a second displacement sensor and a large displacement sensor distributed on the analog-digital bridge expansion device, the system comprises a third displacement sensor (17), a fourth displacement sensor (18), a fifth displacement sensor (19), a first height sensor (20), a second height sensor (21), a third height sensor (22), a fourth height sensor (23), a first installation type of a triaxial vibration sensor (24), a second installation type of a triaxial vibration sensor or an ultrasonic guided wave transmitting and receiving probe (25) and a water leakage cable sensor (26), wherein the third height sensor, the fourth height sensor, the first installation type of the triaxial vibration sensor, the third installation type of the triaxial vibration sensor or the ultrasonic guided wave transmitting and receiving probe and the water leakage cable sensor are respectively connected with a main machine of the multi-parameter monitoring device of the analog-digital bridge expansion device through cables to form a signal and power supply path.
2. The multi-parameter monitoring device for the modular bridge expansion device of claim 1, wherein: modulus formula bridge telescoping device contains a plurality of centre sills (12) and intelligent rubber support (14), can set up a plurality of triaxial vibration sensor installation type one (24) and triaxial vibration sensor installation type two or supersound guided wave transmission and receiving probe (25) in centre sill (12) easy breaking position and intelligent rubber support (14) position of breaking away from easily, triaxial vibration sensor installation type one (24) and triaxial vibration sensor installation type two or supersound guided wave transmission and receiving probe (25) represent the type of sensor mounted position for installing respectively on the bearing structure that intelligent rubber support (14) below is connected with centre sill (12) and on centre sill (12).
3. The multi-parameter monitoring device for the modular bridge expansion device of claim 1, wherein: the intelligent rubber support (14) internally contains a force measuring sensing element which can measure the supporting force loaded on the intelligent rubber support (14).
4. The modular bridge expansion device multiparameter monitoring device of claim 1, wherein: the first displacement sensor (15), the second displacement sensor (16), the third displacement sensor (17), the fourth displacement sensor (18) and the fifth displacement sensor (19) can be laser displacement sensors or contact type displacement sensors.
5. The modular bridge expansion device multiparameter monitoring device of claim 1, wherein: the height sensors I (20), II (21), III (22) and IV (23) can measure the height between the installation position and a fixed height datum point, and can also be level sensors, laser displacement sensors or contact type displacement sensors, and the fixed height datum point can be selected at any fixed position of the bridge.
6. The modular bridge expansion device multiparameter monitoring device of claim 1, wherein: the multi-parameter monitoring device for the modulus type bridge expansion device can select to install the intelligent rubber support (14) of the monitored modulus type bridge expansion device according to actual monitoring requirements, a first displacement sensor (15), a second displacement sensor (16), a third displacement sensor (17), a fourth displacement sensor (18), a fifth displacement sensor (19), a first height sensor (20), a second height sensor (21), a third height sensor (22), a fourth height sensor (23), a first installation type (24) of a three-axis vibration sensor, a second installation type of the three-axis vibration sensor or an ultrasonic guided wave transmitting and receiving probe (25), and all or part of components in a water leakage cable sensor (26).
7. The modular bridge expansion device multiparameter monitoring device of claim 1, wherein: and an ultrasonic guided wave transmitting and receiving probe is also arranged at the position of the second (25) type of the three-axis vibration sensor, and is used for coupling ultrasonic waves into the middle beam (12) at the mounting position and receiving ultrasonic echo signals.
8. The modular bridge expansion device multiparameter monitoring device of claim 1, wherein: when the monitoring bridge expansion device does not belong to an analog-digital bridge expansion device, a monitoring system can be set according to the installation positions and functions of a first displacement sensor (15), a second displacement sensor (16), a third displacement sensor (17), a fourth displacement sensor (18), a fifth displacement sensor (19), a first height sensor (20), a second height sensor (21), a third height sensor (22), a fourth height sensor (23), a first installation type (24) of a three-axis vibration sensor, a second installation type of a three-axis vibration sensor or an ultrasonic guided wave transmitting and receiving probe (25) and a water leakage cable sensor (26) in the analog-digital bridge expansion device multi-parameter monitoring device of claim 1, and the multi-parameter monitoring function of the bridge expansion device can also be realized.
9. A multi-parameter monitoring method for an analog-digital bridge expansion device is characterized in that a host of the multi-parameter monitoring device for the analog-digital bridge expansion device collects measurement data of an intelligent rubber support (14), a first displacement sensor (15), a second displacement sensor (16), a third displacement sensor (17), a fourth displacement sensor (18), a fifth displacement sensor (19), a first height sensor (20), a second height sensor (21), a third height sensor (22), a fourth height sensor (23), a first three-axis vibration sensor installation type (24), a second three-axis vibration sensor installation type or ultrasonic guided wave transmitting and receiving probe (25) and a water leakage cable sensor (26) of a monitored analog-digital bridge expansion device and processes the measurement data to obtain six-axis movement, a seam width, bearing capacity, a three-axis vibration amplitude, a three-axis vibration frequency and water intrusion original data of the monitored analog-digital bridge expansion device in operation, and further analyze the data of the host of the multi-parameter monitoring device for the analog-digital bridge expansion device, and further obtain mechanical interference, vehicle overload, rubber support falling, middle beam fracture, sealing rubber strip damage alarm information, and other damage alarm information of the analog-digital bridge expansion device, and the host can send the alarm information to a wireless network monitoring platform in real-time, and the monitored analog-digital bridge expansion device can display the alarm information.
10. The multi-parameter monitoring method for the modular bridge expansion device of claim 9, wherein: the relation between the original six-degree-of-freedom motion data of the analog-digital bridge expansion device and the measurement result Disp1 of the first displacement sensor (15), the measurement result Disp2 of the second displacement sensor (16), the measurement result Disp3 of the third displacement sensor (17), the measurement result Disp4 of the fourth displacement sensor (18), the measurement result Disp5 of the fifth displacement sensor (19), the measurement result H1 of the first height sensor (20), the measurement result H2 of the second height sensor (21), the measurement result H3 of the third height sensor (22), the measurement result H4 of the fourth height sensor (23) and the spatial installation position thereof is that the linear displacement along the driving direction is Disp1, and the rotation angle is Disp1, and the spatial installation position thereof is
Linear displacement in the direction perpendicular to the travelling direction
Corner is
The linear displacement in the vertical bridge surface direction is H1-H2, and the corner is
The distance between the second displacement sensor (16) and the third displacement sensor (17) and the first displacement sensor (15) is D1, the distance between the third displacement sensor (17) and the fourth displacement sensor (18) is D2, the distance between the third height sensor (22) and the fourth height sensor (23) is D3, after the original six-degree-of-freedom motion data of the analog-digital bridge expansion device are obtained, the seam width of the middle beam (12) can be calculated according to the number of the middle beams (12) of the analog-digital bridge expansion device, whether mechanical contact occurs between the middle beams (12) is judged, the alarm information of mechanical interference in the motion of the analog-digital bridge expansion device is obtained, and the original six-degree-of-freedom motion data of the analog-digital bridge expansion device and the alarm information of mechanical interference are calculated in the multi-parameter monitoring device host of the analog-digital bridge expansion device.
11. The multi-parameter monitoring method for the modular bridge expansion device of claim 9, wherein: the method comprises the steps that the bearing capacity measuring results of each intelligent rubber support (14) of a monitored analog-digital bridge expansion device comprise the pretightening force of the intelligent rubber support (14) and the load capacity of a vehicle passing through the analog-digital bridge expansion device, the measuring result of each intelligent rubber support (14) is pretightening force F1 when no vehicle passes through the analog-digital bridge expansion device, the measuring result of each intelligent rubber support (14) is F3 when a vehicle passes through the analog-digital bridge expansion device, the axle weight of the vehicle passing through the analog-digital bridge expansion device is F3 minus F1, the pretightening force F1 and the axle weight of the vehicle can be respectively used for judging whether each rubber support has falling risk and overload alarm information, the pretightening force of each intelligent rubber support (14) and the load capacity of the vehicle passing through the analog-digital bridge expansion device are calculated in a host machine of the analog-digital bridge expansion device, and vehicle overload and rubber support falling alarm information are obtained.
12. The multi-parameter monitoring method for the modular bridge expansion device of claim 9, wherein: the sampling rate of each triaxial vibration is not lower than 200 Hz, the single sampling time is not lower than 1 second, each triaxial vibration sensor acquires acceleration data once, then discrete Fourier transform is respectively carried out on the three measurement shaft data to obtain vibration frequency spectrums, the amplitudes of the maximum amplitude frequency points of the three measurement shaft vibration frequency spectrums are compared, the amplitude, the frequency and the vibration shaft of the maximum amplitude frequency point of the measurement shaft with the maximum amplitude are used as output data of each triaxial vibration sensor and are transmitted to a multi-parameter monitoring device host of an analog-digital bridge expansion device, the multi-parameter monitoring device host of the analog-digital bridge expansion device compares the amplitude and the frequency of each triaxial vibration sensor with a set threshold, and when the amplitude of each triaxial vibration sensor is larger than the threshold, the multi-parameter monitoring device host of the analog-digital bridge expansion device lists the falling of a rubber support at the mounting position of the triaxial vibration sensor and the breakage of a middle girder in alarm information.
13. The multi-parameter monitoring method for the modular bridge expansion device of claim 9, wherein: after the sealing rubber strip of modulus formula bridge telescoping device is damaged, the rainwater will contact with the cable sensor that leaks (26) through the sealing rubber strip of modulus formula bridge telescoping device, leak cable sensor (26) optional position and water contact after, the resistance of leaking cable sensor (26) can reduce, the resistance of cable sensor that leaks (26) is measured to modulus formula bridge telescoping device multi-parameter monitoring device host computer, when the resistance of leaking cable sensor (26) is less than and sets up the threshold value, can obtain the damaged alarm information of sealing rubber strip.
14. The multi-parameter monitoring device for the modular bridge expansion device of claim 9, wherein: when the ultrasonic guided wave transmitting and receiving probe replaces a three-axis vibration sensor mounting type II (25), a crack-free ultrasonic echo signal of the middle beam (12) can be compared with an ultrasonic echo signal measured in real time, and the crack position and the crack depth of the middle beam (12) are evaluated according to the changes of the amplitude and the phase of the acoustic echo signal.
15. The multi-parameter monitoring method for the modular bridge expansion device of claim 9, wherein: when the monitoring bridge expansion device does not belong to a modular bridge expansion device, the multi-parameter monitoring and data processing of other types of bridge expansion devices can be implemented according to the method of claim 9 and claims 10 to 14, and the multi-parameter monitoring function of the bridge expansion device can also be realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211532675.1A CN115683233A (en) | 2022-12-01 | 2022-12-01 | Multi-parameter monitoring device and method for modular bridge expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211532675.1A CN115683233A (en) | 2022-12-01 | 2022-12-01 | Multi-parameter monitoring device and method for modular bridge expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115683233A true CN115683233A (en) | 2023-02-03 |
Family
ID=85055471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211532675.1A Pending CN115683233A (en) | 2022-12-01 | 2022-12-01 | Multi-parameter monitoring device and method for modular bridge expansion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115683233A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117290692A (en) * | 2023-11-24 | 2023-12-26 | 交通运输部公路科学研究所 | Expansion joint device service performance evaluation method and system based on internet of things (IoT) intelligent perception |
-
2022
- 2022-12-01 CN CN202211532675.1A patent/CN115683233A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117290692A (en) * | 2023-11-24 | 2023-12-26 | 交通运输部公路科学研究所 | Expansion joint device service performance evaluation method and system based on internet of things (IoT) intelligent perception |
| CN117290692B (en) * | 2023-11-24 | 2024-02-13 | 交通运输部公路科学研究所 | Expansion joint device service performance evaluation method and system based on internet of things (IoT) intelligent perception |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110926523A (en) | High-speed railway bridge safety perception and early warning system under complicated abominable condition | |
| CN101954916B (en) | Track on-line monitoring method and track on-line monitoring system | |
| CN114005278B (en) | Intelligent monitoring and early warning system and method for highway infrastructure group | |
| CN106404319A (en) | Remote automatic real-time bridge monitoring system and method based on MEMS technology | |
| CN104316108A (en) | Method for establishing and analyzing online monitoring system for 500kv power transmission tower in mountain environment | |
| CN106199056B (en) | A kind of distributed wind speed on-line monitoring method in overhead transmission line corridor | |
| CN201849490U (en) | Online track-monitoring system | |
| CN112162034B (en) | Steel-concrete combined beam damage identification method applying structural noise | |
| CN104215421A (en) | Quick bridge impact coefficient determination method | |
| CN210981361U (en) | Self-checking and remote control system of bridge structure monitoring system based on multidimensional coupling | |
| CN115683233A (en) | Multi-parameter monitoring device and method for modular bridge expansion device | |
| CN108414201A (en) | A kind of ocean platform derrick monitoring of working condition and fatigue life predicting system | |
| CN112556760A (en) | Bridge crack monitoring system | |
| CN110320021A (en) | Contact net anchor section on-Line Monitor Device | |
| CN103759868A (en) | Bridge cross connection real-time assessment method based on stress proportion | |
| CN113514110A (en) | Road and bridge engineering intelligent measurement system | |
| CN116295637A (en) | Intelligent monitoring method and system for safety of high-altitude building | |
| CN110147595B (en) | Method for evaluating transverse cooperative working performance of multi-piece type beam bridge | |
| CN117591838B (en) | Safety early warning system and method for damping blasting of underground excavation tunnel of karst cave area | |
| CN215296144U (en) | Bridge beam supports real-time safety monitoring system based on intelligence cloud platform | |
| CN113418986A (en) | Voiceprint detection system for bridge tunnel | |
| CN218035590U (en) | Health monitoring system for corrugated steel web bridge | |
| CN116952748A (en) | System and method for monitoring service performance degradation of node plate | |
| CN111458411A (en) | Device, system and identification method for monitoring solid defects through multi-angle ultrasonic waves | |
| CN110907633A (en) | Vehicle-mounted mobile bridge safety detection device and method based on inertial navigation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |