CN106156336A - A kind of Cable-Stayed Bridge Structure state evaluation system and assessment method - Google Patents
A kind of Cable-Stayed Bridge Structure state evaluation system and assessment method Download PDFInfo
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- CN106156336A CN106156336A CN201610533806.6A CN201610533806A CN106156336A CN 106156336 A CN106156336 A CN 106156336A CN 201610533806 A CN201610533806 A CN 201610533806A CN 106156336 A CN106156336 A CN 106156336A
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- G—PHYSICS
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
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- G—PHYSICS
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06Q50/08—Construction
Abstract
The invention discloses a kind of Cable-Stayed Bridge Structure state evaluation system and assessment method, process and control system and configuration state evaluation four subsystems of system with transmission system, data including sensor physics layer subsystem, data acquisition；Sensor physics layer subsystem, for Real-time Collection monitored target parameter value；Data acquisition and transmission system, including fiber Bragg grating (FBG) demodulator, data collecting instrument and communication module；The data that sensor physics layer subsystem collects are carried out pretreatment by fiber Bragg grating (FBG) demodulator and data collecting instrument respectively, and are sent to data process and control system by communication module；Data process and are analyzed the data received with control system and set up bridge monitoring information public database, transfer according to demand for all departments personnel, data are further analyzed process；Configuration state evaluation system, based on bridge monitoring information public database, is set up the relation between load and structural response, is grasped the state of bridge, it is achieved on-line monitoring.
Description
Technical field
The invention belongs to sensor application and Computer Applied Technology field, be specifically related to a kind of Cable-Stayed Bridge Structure state and comment
Valency system and assessment method.
Background technology
In commission bridge, due to the effect of the natural cause such as weather, environment and the volume of traffic day by day increased and loaded vehicle, super
Being continuously increased of loaded vehicle gap bridge quantity, bridge structure uses functional deterioration necessarily to occur.In the situation that China's economy is flourish
Under, the requirement of traffic capacity is also continuously increased, and the aging and functional deterioration of many bridges is in acceleration tendency.Along with traffic
The development of cause, the raising of class of loading, traffic flow, road speed etc., and some uncertain corollary failure power will
Jeopardize the safety of bridge.
The cable-stayed bridge monitoring method of present stage relies primarily on artificial current check and makes regular check on.By observing bridge appearance
The most abnormal, it is used in combination acoustic wave detection and radar detection technique, whether detection concrete has crack, slag inclusion and cavity
Etc. defect, and detect steel and whether weld seam has problems.The detection technique of present stage cannot monitor macroseism, hurricane, crash,
There is the change of front-rear axle girder construction state parameter in blast, especially big ice disaster etc. " accident ".
The present invention is by the physical and mechanical property of structure carries out non-destructive monitoring, and real-time monitoring structure global behavior is right
STRUCTURE DAMAGE LOCATION and degree diagnose, and structure military service situation, reliability, durability and bearing capacity are carried out intelligence and comments
Estimate, when triggering early warning signal under structure is in accident or during structure behaviour in service severely subnormal, for the maintenance of structure, maintenance with
Management decision-making provides foundation and guidance.
Summary of the invention
For above-mentioned background technology, the present invention proposes a kind of a kind of cable-stayed bridge based on sensor and computer utility knot
Structure state evaluation system, the technical scheme of employing is as follows:
A kind of Cable-Stayed Bridge Structure state evaluation system, including sensor physics layer subsystem, data acquisition and transmission system,
Data process evaluates four subsystems of system with control system and configuration state；
Described sensor physics layer subsystem, including sensor group, change for Real-time Collection bridge structure local environment,
Vehicular load change and structural response data；
Described data acquisition and transmission system, including fiber Bragg grating (FBG) demodulator, data collecting instrument and communication module；
The data that sensor group collects are converted into digital signal and send data acquisition to by described fiber Bragg grating (FBG) demodulator
Instrument carries out pretreatment, and pretreated data are sent to data handling machine by communication module；
Described data process and control system, including data handling machine and Mass Digital Storage System；
Equipped with structure analysis software in described data handling machine, use this software that the data received are analyzed
Processing and send Mass Digital Storage System to, setting up bridge monitoring information public database, all departments personnel can be according to certainly
Body demand called data is further analyzed process；
Described configuration state evaluates system, including computer, wherein equipped with structural safety management assessment system；Described structure
State evaluation system is based on one utilizes bridge monitoring information public database, this system prison by Construction control process
Survey data, bridge becomes the data of bridge integrity detection, the environmental change of bridge life cycle and the data of structural response, to a certain
In time period, observed value cable-stayed bridge quantity of state is evaluated, and grasps the state condition of bridge, under bridge structure is in accident
Or during structure behaviour in service severely subnormal, trigger early warning signal, it is achieved on-line monitoring.
Further, described sensor group include displacement meter, hydraulic pressure instrument, inclinator, pluviometer, strain gauge, reinforcement corrosion meter,
Deformation instrument, vibrating sensor, temperature sensor, reinforcing rib meter, strain gauge, settlement gauge, level gauge, slit gauge, soil pressure meter etc. and with
The amplifying device of coupling, secondary meter.
Further, described data collecting instrument uses ALOT-EXPLORER Multipurpose Data Acquisition Instrument, according to variety classes number
According to feature, take the modes such as compression, filtration that data carry out pretreatment, it is to avoid data volume is the hugest.
Further, described configuration state evaluation system has sharing.
Further, described configuration state evaluate system running environment be under Windows operating system, use Delphi and
Access2000 background data base exploitation software is researched and developed；The software environment run is WindowsXP/2000, right
Hardware environment has no special requirements, and uses general desktop computer or notebook computer, online requirement to have server and large-scale
Monitoring device.
Further, described fiber Bragg grating (FBG) demodulator selects FBG-1000 portable fiber-optic grating demodulation instrument.
The technical scheme of the method for the present invention is:
The assessment method of a kind of Cable-Stayed Bridge Structure state evaluation system, comprises the following steps:
Step 1, the change of sensor physics layer subsystem Real-time Collection bridge structure local environment, vehicular load change and knot
Structure response data；
Step 2, data acquisition is with transmission system, and the data that sensor group collects are converted into by fiber Bragg grating (FBG) demodulator
Digital signal sends data collecting instrument to and carries out pretreatment, and pretreated data are sent to data by communication module and process meter
Calculation machine；
Step 3, maintenance data processes and is analyzed processing and transmitting to the data received with the software in control system
To Mass Digital Storage System, set up bridge monitoring information public database；
Step 4, configuration state is evaluated system and is become bridge integrity detection by the Monitoring Data of Construction control process, bridge
Data, the environmental change of bridge life cycle and the data of structural response, to observed value cable-stayed bridge quantity of state in certain time period
Evaluate；
Step 5, the measured data trend for the longtime running of each bridge uses the quantity of state of change relatively to comment safely
Estimate threshold values and judge cable-stayed bridge state, the formulation of cable-stayed bridge state boundaries threshold values is divided into two classes: the first kind belongs to static state
Amount or soft phase amount, allow deformation, girder high level error, the gradient of Sarasota including Ru Suoli, girder；Equations of The Second Kind belongs to dynamic
State quantity of state, including vibration, dynamic strain, linear；
Step 6, the security evaluation criterion relatively changed based on observed value divides A, B, C, D tetra-grades, corresponding normal, note
Meaning, exception and severe conditions；Following state limit value establishing method is proposed, it is assumed thatA large amount of statistical datas, choose 1～3 year equal
Value；σ: the average of 1～3 year chosen by a large amount of statistical datas；The meansigma methods of 1 month observation is chosen in M: one time period；At this
The assessment criteria of observed value quantity of state in time period:
Girder vibration and Suo Zhendong:
WhenTime, it is in normal condition；WhenTime, it is in attention state；WhenTime, it is in abnormality；WhenTime, it is in severe conditions；
Amount of deflection and strain:
WhenTime, it is in normal condition；WhenOrTime, it is in attention state；WhenOr
Time, it is in abnormality；WhenOrTime, it is in severe conditions.
Further, in described step 6,
Statistical computationAnd during σ, during the statistical computation of long term data, the event of respective time section generation hardware-software
Missing data or wrong data that barrier and power failure cause must be disallowable；
Different measuring points for same quantity of state sets different limit values；Different location status amount levels and change thereof should
This is different, and different measuring points alarm limits should be different；
Girder vibration and rope vibration values are the most positive, and quantity of state boundary threshold values is a line；Strain and amount of deflection are algebraic quantities,
Have just have negative；
Configuration state is evaluated system and is directed to the variation tendency of bridge performance in a long time, and strong wind or overweight car occur
Opened or a large amount of loaded vehicle passed through simultaneously, bridge vibration can be caused at short notice the most much bigger, if according to a minute system
Evaluation then can exceed severe conditions threshold values, the most still should not be used as alert process.
Beneficial effects of the present invention:
1, sensor group and configuration state is utilized to evaluate system, monitoring bridge structure global behavior in real time, it is achieved bridge shape
The on-line monitoring of state.
2, recordable lower bridge data under accident or during structure behaviour in service severely subnormal, set for bridge
There are important meaning in meter unit, management maintenance department, vehicle supervision department and research institution.
3, bridge structure triggers early warning signal under accident or during structure behaviour in service severely subnormal, for the dimension of structure
Repair, maintenance provides foundation and guidance with management decision-making.
Accompanying drawing explanation
Fig. 1 is the system architecture figure of the present invention.
Fig. 2 is the concrete structure connection figure of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described.
As shown in Figure 1-2, for the system architecture figure of the present invention, a kind of cable-stayed bridge based on sensor and computer utility is tied
Structure state evaluation system, including sensor physics layer subsystem, data acquisition and transmission system, data process with control system and
Configuration state evaluates four subsystems of system.
Sensor physics layer subsystem includes that sensor group, sensor group include displacement meter, hydraulic pressure instrument, inclinator, rainfall
Meter, strain gauge, reinforcement corrosion meter, deformation instrument, vibrating sensor, temperature sensor, reinforcing rib meter, strain gauge, settlement gauge, level
Instrument, slit gauge, soil pressure meter etc. and the amplifying device matched, secondary meter etc., for ring residing for Real-time Collection bridge structure
The data such as border change, vehicular load change and structural response, and the data collected are sent to data acquisition and transmission system.
Described data acquisition and transmission system include fiber Bragg grating (FBG) demodulator, data collecting instrument and communication module, optical fiber light
The data that sensor group collects are converted into digital signal by grid (FBG) demodulator, and send data collecting instrument to, and Acquisition Instrument is not according to
With the feature of kind data, the modes such as compression, filtration are taked data to carry out pretreatment, by communication module by pretreated
Data are sent to data handling machine.
Described data process and control system, including data handling machine and Mass Digital Storage System, at data
Equipped with structure analysis software in reason computer, use this software to be analyzed the data received processing, process is completed
Data send Mass Digital Storage System to, set up bridge monitoring information public database.
Described configuration state evaluates system, and including computer, wherein equipped with structural safety management assessment system, this system is
A kind of data utilizing bridge monitoring information public database to provide, use artificial neural network, wavelet analysis and structural mechanics
Etc. the technical research Developing Expert System of aspect, become bridge integrity detection by the Monitoring Data of Construction control process, bridge
Data, the environmental change of bridge life cycle and the data of structural response, set up observed value cable-stayed bridge state in certain time period
The evaluation of amount, grasps the state condition of bridge, when touching under bridge structure is in accident or during structure behaviour in service severely subnormal
Send out early warning signal.Described configuration state is evaluated system and is had sharing.
Described configuration state evaluate system running environment be under Windows operating system, use Delphi and
Access2000 background data base exploitation software is researched and developed；The software environment run is WindowsXP/2000, right
Hardware environment has no special requirements, and uses general desktop computer or notebook computer, online requirement to have server and large-scale
Monitoring device.
Described data collecting instrument uses ALOT-EXPLORER Multipurpose Data Acquisition Instrument, it is provided that can measure multiple mould for 8
Plan type signalling channel, can be acquired multiple sensors, such as ICP piezoelectric acceleration transducer, magnetoelectric sensor,
Wind pressure sensor, inclinator, anemoclinograph etc..This instrument uses state-of-the-art 32 to be Cortex-M series A RM processor,
According to the feature of variety classes data, take the modes such as compression, filtration that data carry out pretreatment, it is to avoid data volume is the hugest
Greatly.
Described fiber Bragg grating (FBG) demodulator selects FBG-1000 portable fiber-optic grating demodulation instrument, and this instrument is easy to carry, behaviour
Make simply, in high precision, high-resolution, be suitable for engineering site construction time use, casing use ABS engineering plastics, lightweight, anti-impact
Hit and resistance to deformation, be suitable for harsh environments.
Described data collecting instrument uses ALOT-EXPLORER Multipurpose Data Acquisition Instrument, according to the spy of variety classes data
Point, takes the modes such as compression, filtration that data carry out pretreatment, it is to avoid data volume is the hugest.
Embodiment
Cable-stayed bridge main-beam displacement being monitored employing laser fixed point and follows the tracks of range finding, the mode of interception, equipment uses full station
Instrument.Total powerstation pedestal is placed on the on-the-spot reasonably place of bridge, and (measured point) prism may be installed light beam outside girder and can irradiate
Side.(measuring point is laid depending on detailed programs)
For making up the monitoring to steel box-girder twisting states, (specific number and placement location can be according to concrete can to set up inclinator
Depending on project), but inclinator is sensed torsion simultaneously and need to do corresponding signal separation process with the output of the signal of linear acceleration.
(tour inspection is implemented in each measured point, each measuring point is measured one group of spatial value and is converted into greatly
The three Cartesian coordinates that bridge design coordinate describes.During testing, the rotation detected value of all inclinators is read simultaneously
Number.)
Monitoring Data output content after edit:
The each measuring point coordinate figure 1) obtained in initial, end time of this monitoring and monitoring and statistical property thereof (average,
Mean square deviation root, maximum, minima).
2) each inclinator initial with each Laser Measuring point, that the end time is corresponding rotates detected value and statistical property is (equal
Value, mean square deviation root, maximum, minima).
Cable-stayed bridge main-beam displacement is monitored the mode using the displacement meter series rationally layouted to survey girder Displacement-deformation.
(measuring point is laid depending on detailed programs.)
For making up the monitoring to steel box-girder twisting states, (specific number and placement location can be according to concrete can to set up inclinator
Depending on project), but inclinator is sensed torsion simultaneously and need to do corresponding signal separation process with the output of the signal of linear acceleration.
(tour inspection is implemented in each measured point, each measuring point is measured corresponding shift value and at default bridge
Design three dimensional cartesian coordinates system conversion bridge designs coordinate measuring point accordingly.During testing, the rotation inspection of all inclinators
Measured value carries out reading simultaneously.)
Monitoring Data output content after edit:
1) each measuring point obtained in initial, end time of this monitoring and monitoring converts coordinate figure and statistics spy thereof accordingly
Property (average, mean square deviation root, maximum, minima).
2) each inclinator initial with each Laser Measuring point, that the end time is corresponding rotates detected value and statistical property is (equal
Value, mean square deviation root, maximum, minima).]
Cable-stayed bridge main-beam deflection monitoring
If only the monitoring to cable-stayed bridge main-beam amount of deflection also can be selected for hydrostatic level and (is applicable to witness mark and test point
Between relative displacement, along longitudinally the differential settlement between works being monitored.Measuring point is laid depending on detailed programs.)
Utilize total powerstation to carry out location after bridge construction completes to measure, with reference to the conjunction preset through structural mechanics simulation analysis
The monitoring of reason sets up an office, and determines horizontal reference point (relative fixed point), settlement observation point simultaneously.Monitored set up an office with necessarily to each
Sample frequency and hits output reading.(choosing depending on concrete actual items situation of datum mark)
Monitoring Data output content after edit:
1) sampling configuration A: initial, the end time of this monitoring, each measured point relative settlement numerical value (average, mean square deviation
Root, maximum, minima).
2) sampling configuration B: initial, the end time of this monitoring, each measured point relative settlement numerical value (average, mean square deviation
Root, maximum, minima) and press the period weld fatigue state parameter that rainfall scale of notation is estimated.
3) sampling configuration C: initial, the end time of this monitoring, each measured point relative settlement numerical value (average, mean square deviation
Root, maximum, minima) and the girder floorings alternate stress situation that caused by traffic load of period.
Cable-stayed bridge main-beam Internal Force Monitoring
The monitoring alternative of cable-stayed bridge main-beam internal force is used several detection sensors.Wherein, optional by different
Sensor type, implements different sampling configurations:
1) vibrating string extensometer: multi-measuring point tour inspection, monitoring time is spaced: 10 seconds；
2) electric resistance wire strain gauge: multi-measuring point tour inspection, sample frequency (each measuring point): 100Hz；
3) fiber Bragg grating type strain gauge: multi-measuring point is measured simultaneously, sample frequency: 50Hz；
(alternative by different monitoring start-up mode, implement the different single or detection pattern operation of combination.)
Monitoring Data output content after edit:
3.1) sampling configuration A: initial, the end time of this monitoring, each measured point stress intensity (average, mean square deviation root,
Maximum, minima).
3.2) sampling configuration B: initial, the end time of this monitoring, each measured point stress intensity (average, mean square deviation root,
Maximum, minima) and press the period weld fatigue state parameter that rainfall scale of notation is estimated.
3.3) sampling configuration C: initial, the end time of this monitoring, each measured point stress intensity (average, mean square deviation root,
Maximum, minima) and the girder floorings alternate stress situation that caused by traffic load of period.
(it is the loss problems of the measuring point zero stress state demarcation that solution causes because of sensor degradation, can be at each layout vibratory string
The measuring point of formula deformeter sets up a backup sensors demarcated through zero strain.)
Cable-stayed bridge main-beam temperature monitoring
Temperature sensing meter integrated in cable-stayed bridge main-beam temperature is monitored available stress detecting sensor.
(it is proposed with fiber-optic grating sensor herein, sets with reference to the reasonably monitoring preset through structural mechanics simulation analysis
Point, to choosing the sampling of Latitudinal section formula accordingly.)
Monitoring Data output content after edit:
Each measuring point temperature value that initial, the end time of each tour inspection and detection obtain and the system of this detected value thereof
Meter characteristic (average, mean square deviation root, maximum, minima).
Cable-stayed bridge main-beam vibration monitoring
Monitoring to cable-stayed bridge main-beam vibration uses intrasonic servo-type or capacitance acceleration transducer or middling speed to pick up
Vibration Meter.Choosing of vibration testing equipment, is configured by different Contents for Monitorings.
Contents for Monitoring: determine rational monitoring point series through structure mechanics analysis, to each point being monitored series with certain
Sample frequency and hits take its acceleration of vibration value or vibrating numerical.
Monitoring Data output content after edit:
Initial, the end time of this monitoring, the acceleration of vibration detected value ordered series of numbers of each measuring point, vibration intensity (average,
Mean square deviation root, maximum, minima) with identification to vibratory response spectral characteristic.
Cable-stayed Bridge Pylon vibration monitoring
Monitoring to Cable-stayed Bridge Pylon vibration uses intrasonic servo-type or piezoelectric acceleration transducer.Vibration detection sets
Standby chooses, and is configured by different Contents for Monitorings.
Contents for Monitoring: determine rational monitoring point series through structure mechanics analysis, adopts with certain each monitoring point series
Sample frequency takes its acceleration of vibration value.
Monitoring Data output content after edit:
Initial, the end time of this monitoring, the acceleration of vibration detected value ordered series of numbers of each measuring point, vibration intensity (average,
Mean square deviation root, maximum, minima) with identification to vibratory response spectral characteristic.
Cable-stayed Bridge Pylon tower top displacement monitoring
Cable-stayed Bridge Pylon displacement being monitored employing laser fixed point and follows the tracks of range finding, the mode of interception, equipment uses with main
Liang Sicheng monitors same total powerstation, can design corresponding measure-point amount and layout according to concrete actual items.Total powerstation pedestal
Being placed on on-the-spot rationally the layouting of bridge, (measured point) prism is tower-mounted or (total powerstation light beam can be irradiated on king-post top
Position).
Contents for Monitoring a: tour inspection is implemented in each measured point, each measuring point is measured one group of spatial value and changes
It is counted as the three Cartesian coordinates described with Design of Bridge coordinate.
Monitoring Data output content after edit:
Initial, the end time of each tour inspection and each measuring point coordinate figure ordered series of numbers of acquisition and statistical property thereof (average,
Mean square deviation root, maximum, minima).
Stay cable of cable-stayed bridge vibration monitoring
Monitoring to stay cable of cable-stayed bridge vibration uses low frequency piezoelectric acceleration transducer.The choosing of vibration testing equipment
Take, configured by different Contents for Monitorings.
Contents for Monitoring: according to structure mechanics analysis and cost effectiveness analysis, determines by measuring rope, to its each measured point with necessarily
Sample frequency and hits take its acceleration of vibration value.
Monitoring Data output content after edit:
Initial, the end time of this monitoring, the acceleration of vibration detected value ordered series of numbers of each measuring point and the intensity of vibration are (all
Value, mean square deviation root, maximum, minima) and identification, the Suo Li of vibratory response spectral characteristic is converted.
Cable-stayed bridge tower top wind speed and direction is monitored
This monitoring is that the monitoring to wind field distribution situation with high wind course supplements.
Monitoring is implemented: be applied to the monitoring that Artificial Control starts and the special environment status monitoring started because of wind regime.
Contents for Monitoring: wind speed, wind direction, temperature.
Monitoring Data output content after edit:
Initial, the end time of this monitoring, wind speed, wind direction, the detected value ordered series of numbers of temperature and cymomotive force (average, all
Variance root, maximum, minima).
By the data obtained are processed by the data acquisition of monitoring to system further according to different models, draw to external world
Rise or the deformation of self generation carries out time series analysis, it is provided that visual deformation monitoring pictorial statement, it is achieved early warning
The real-time release of information.
The assessment method of a kind of Cable-Stayed Bridge Structure state evaluation system of the present invention, comprises the following steps:
Step 1, the change of sensor physics layer subsystem Real-time Collection bridge structure local environment, vehicular load change and knot
Structure response data；
Step 2, data acquisition is with transmission system, and the data that sensor group collects are converted into by fiber Bragg grating (FBG) demodulator
Digital signal sends data collecting instrument to and carries out pretreatment, and pretreated data are sent to data by communication module and process meter
Calculation machine；
Step 3, maintenance data processes and is analyzed processing and transmitting to the data received with the software in control system
To Mass Digital Storage System, set up bridge monitoring information public database；
Step 4, configuration state is evaluated system and is become bridge integrity detection by the Monitoring Data of Construction control process, bridge
Data, the environmental change of bridge life cycle and the data of structural response, to observed value cable-stayed bridge quantity of state in certain time period
Evaluate；
Step 5, the measured data trend for the longtime running of each bridge uses the quantity of state of change relatively to comment safely
Estimate threshold values and judge cable-stayed bridge state, the formulation of cable-stayed bridge state boundaries threshold values is divided into two classes: the first kind belongs to static state
Amount or soft phase amount, allow deformation, girder high level error, the gradient of Sarasota including Ru Suoli, girder；Equations of The Second Kind belongs to dynamic
State quantity of state, including vibration, dynamic strain, linear；
Step 6, the security evaluation criterion relatively changed based on observed value divides A, B, C, D tetra-grades, corresponding normal, note
Meaning, exception and severe conditions；Following state limit value establishing method is proposed, it is assumed thatA large amount of statistical datas, choose 1～3 year equal
Value；σ: the average of 1～3 year chosen by a large amount of statistical datas；The meansigma methods of 1 month observation is chosen in M: one time period；At this
The assessment criteria of observed value quantity of state in time period:
Girder vibration and Suo Zhendong:
WhenTime, it is in normal condition；WhenTime, it is in attention state；WhenTime, it is in abnormality；WhenTime, it is in severe conditions；
Amount of deflection and strain:
WhenTime, it is in normal condition；WhenOrTime, it is in attention state；WhenOr
Time, it is in abnormality；WhenOrTime, it is in severe conditions.
In step 6, statistical computationAnd during σ, during the statistical computation of long term data, respective time section occurs hard
Missing data or wrong data that part software fault and power failure cause must be disallowable；Different measuring points for same quantity of state sets
Fixed different limit value；Different location status amount levels and change thereof should be different, and different measuring points alarm limits should not
With；Girder vibration and rope vibration values are the most positive, and quantity of state boundary threshold values is a line；Strain and amount of deflection are algebraic quantities, just have
Have negative；Configuration state is evaluated system and is directed to the variation tendency of bridge performance in a long time, and strong wind or overweight vehicle occur
Opened or a large amount of loaded vehicle passed through simultaneously, bridge vibration can be caused at short notice the most much bigger, if according to a minute statistics
Value then can exceed severe conditions threshold values, the most still should not be used as alert process.
Described embodiment be the present invention preferred embodiment, but the present invention is not limited to above-mentioned embodiment, not
In the case of deviating from the flesh and blood of the present invention, any conspicuously improved, the replacement that those skilled in the art can make
Or modification belongs to protection scope of the present invention.
Claims (8)
1. a Cable-Stayed Bridge Structure state evaluation system, it is characterised in that include sensor physics layer subsystem, data acquisition with
Transmission system, data process evaluates four subsystems of system with control system and configuration state；
Described sensor physics layer subsystem, including sensor group, for the change of Real-time Collection bridge structure local environment, vehicle
Loads change and structural response data；
Described data acquisition and transmission system, including fiber Bragg grating (FBG) demodulator, data collecting instrument and communication module；
The data that sensor group collects are converted into digital signal and send data collecting instrument to and enter by described fiber Bragg grating (FBG) demodulator
Row pretreatment, pretreated data are sent to data handling machine by communication module；
Described data process and control system, including data handling machine and Mass Digital Storage System；
Equipped with structure analysis software in described data handling machine, this software is used to be analyzed the data received processing
And send Mass Digital Storage System to, and setting up bridge monitoring information public database, all departments personnel can be according to self need
Called data is asked to be further analyzed process；
Described configuration state evaluates system, including computer, wherein equipped with structural safety management assessment system；Described configuration state
Evaluation system is based on one utilizes bridge monitoring information public database, this system monitoring number by Construction control process
The data of bridge integrity detection, the environmental change of bridge life cycle and the data of structural response are become, to sometime according to, bridge
In section, observed value cable-stayed bridge quantity of state is evaluated, when under bridge structure is in accident or during structure behaviour in service severely subnormal
Trigger early warning signal, it is achieved on-line monitoring.
A kind of Cable-Stayed Bridge Structure state evaluation system the most according to claim 1, it is characterised in that described sensor group bag
Include displacement meter, hydraulic pressure instrument, inclinator, pluviometer, strain gauge, reinforcement corrosion meter, deformation instrument, vibrating sensor, temperature sensor,
Reinforcing rib meter, strain gauge, settlement gauge, level gauge, slit gauge, soil pressure meter etc. and the amplifying device matched, secondary meter.
A kind of Cable-Stayed Bridge Structure state evaluation system the most according to claim 1, it is characterised in that described data collecting instrument
Use ALOT-EXPLORER Multipurpose Data Acquisition Instrument, according to the feature of variety classes data, take the modes such as compression, filtration
Data are carried out pretreatment, it is to avoid data volume is the hugest.
A kind of Cable-Stayed Bridge Structure state evaluation system the most according to claim 1, it is characterised in that described configuration state is commented
Valency system has sharing.
A kind of Cable-Stayed Bridge Structure state evaluation system the most according to claim 1, it is characterised in that described configuration state is commented
The running environment of valency system is under Windows operating system, uses Delphi and Access2000 background data base exploitation software
Research and develop；The software environment run is WindowsXP/2000, has no special requirements hardware environment, uses general
Desktop computer or notebook computer, online requirement has server and large-scale monitoring device.
A kind of Cable-Stayed Bridge Structure state evaluation system the most according to claim 1, it is characterised in that described fiber grating solution
Instrument is adjusted to select FBG-1000 portable fiber-optic grating demodulation instrument.
The assessment method of a kind of Cable-Stayed Bridge Structure state evaluation system the most according to claim 1, it is characterised in that include
Following steps:
Step 1, the change of sensor physics layer subsystem Real-time Collection bridge structure local environment, vehicular load change and structure are rung
Answer data；
Step 2, data acquisition is with transmission system, and the data that sensor group collects are converted into numeral by fiber Bragg grating (FBG) demodulator
Signal sends data collecting instrument to and carries out pretreatment, and pretreated data are sent to data by communication module and process calculating
Machine；
Step 3, maintenance data processes and is analyzed the data received processing and sending to greatly with the software in control system
Capacity data storage systems, sets up bridge monitoring information public database；
Step 4, configuration state is evaluated system and is become the number of bridge integrity detection by the Monitoring Data of Construction control process, bridge
According to, the environmental change of bridge life cycle and the data of structural response, observed value cable-stayed bridge quantity of state in certain time period is entered
Row evaluation；
Step 5, the measured data trend for the longtime running of each bridge uses the quantity of state security evaluation valve relatively changed
Value judges cable-stayed bridge state, and the formulation of cable-stayed bridge state boundaries threshold values is divided into two classes: the first kind belong to static quantity of state or
Soft phase amount, allows deformation, girder high level error, the gradient of Sarasota including Ru Suoli, girder；Equations of The Second Kind belongs to dynamic shape
State amount, including vibration, dynamic strain, linear；
Step 6, the security evaluation criterion relatively changed based on observed value divides A, B, C, D tetra-grades, corresponding normal, note, different
Often and severe conditions；Following state limit value establishing method is proposed, it is assumed thatA large amount of statistical datas, choose the average of 1～3 year；σ:
The average of 1～3 year chosen by a large amount of statistical datas；The meansigma methods of 1 month observation is chosen in M: one time period；In this time period
The assessment criteria of interior observed value quantity of state:
Girder vibration and Suo Zhendong:
WhenTime, it is in normal condition；WhenTime, it is in attention state；WhenTime, it is in abnormality；WhenTime, it is in severe conditions；
Amount of deflection and strain:
WhenTime, it is in normal condition；WhenOr
Time, it is in attention state；WhenOrTime, it is in abnormality；WhenOrTime, it is in severe conditions.
The method of a kind of Cable-Stayed Bridge Structure state evaluation system the most according to claim 7, it is characterised in that described step
In 6,
Statistical computationAnd during σ, during the statistical computation of long term data, respective time section generation hardware-software fault and
Missing data or wrong data that power failure causes must be disallowable；
Different measuring points for same quantity of state sets different limit values；Different location status amount levels and change thereof should be
Different, different measuring points alarm limits should be different；
Girder vibration and rope vibration values are the most positive, and quantity of state boundary threshold values is a line；Strain and amount of deflection are algebraic quantities, just have
Have negative；
Configuration state is evaluated system and is directed to the variation tendency of bridge performance in a long time, occurs strong wind or overweight vehicle to open
Cross or a large amount of loaded vehicle passes through simultaneously, bridge vibration can be caused at short notice the most much bigger, if according to a minute statistical value
Then can exceed severe conditions threshold values, the most still should not be used as alert process.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768743A (en) * | 2016-12-08 | 2017-05-31 | 合肥城市云数据中心股份有限公司 | A kind of linear appraisal procedure of bridge main beam based on real time data processing technology |
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| CN115485534A (en) * | 2020-01-30 | 2022-12-16 | 坦萨国际公司 | Systems and methods for monitoring health, condition and/or status of an infrastructure equipped with sensors |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619989A (en) * | 2008-07-04 | 2010-01-06 | 中国铁路通信信号上海工程有限公司 | System and method for acquiring and analyzing remote data of bridge |
| CN101763053A (en) * | 2008-12-26 | 2010-06-30 | 上海交技发展股份有限公司 | Movable type bridge security detection and analysis management system |
| CN102147597A (en) * | 2010-02-10 | 2011-08-10 | 广州大学 | Health monitoring system for structures of great building and bridge |
| US20130279561A1 (en) * | 2012-03-06 | 2013-10-24 | Carnegie Mellon University | System and method for time reversal data communications on pipes using guided elastic waves |
| CN104199410A (en) * | 2014-08-27 | 2014-12-10 | 重庆大学 | Bridge-structure universal acquisition control system for health monitoring |
-
2016
- 2016-07-08 CN CN201610533806.6A patent/CN106156336A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619989A (en) * | 2008-07-04 | 2010-01-06 | 中国铁路通信信号上海工程有限公司 | System and method for acquiring and analyzing remote data of bridge |
| CN101763053A (en) * | 2008-12-26 | 2010-06-30 | 上海交技发展股份有限公司 | Movable type bridge security detection and analysis management system |
| CN102147597A (en) * | 2010-02-10 | 2011-08-10 | 广州大学 | Health monitoring system for structures of great building and bridge |
| US20130279561A1 (en) * | 2012-03-06 | 2013-10-24 | Carnegie Mellon University | System and method for time reversal data communications on pipes using guided elastic waves |
| CN104199410A (en) * | 2014-08-27 | 2014-12-10 | 重庆大学 | Bridge-structure universal acquisition control system for health monitoring |
Non-Patent Citations (2)
| Title |
|---|
| 张宇辉: ""桥梁结构健康监测技术与方法研究"", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 魏保立: "《桥梁结构损伤诊断的动力参数法》", 30 September 2015, 黄河水利出版社 * |
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