CN106409044A - Bridge monitoring teaching system based on designable bridge model - Google Patents
Bridge monitoring teaching system based on designable bridge model Download PDFInfo
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- CN106409044A CN106409044A CN201610621077.XA CN201610621077A CN106409044A CN 106409044 A CN106409044 A CN 106409044A CN 201610621077 A CN201610621077 A CN 201610621077A CN 106409044 A CN106409044 A CN 106409044A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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Abstract
The invention provides a bridge monitoring teaching system based on a designable bridge model. The system comprises a bridge model, an automatic loading control unit and a bridge state detection analysis unit, wherein the bridge model is used for simulating and constructing the bridge model; the automatic loading control is used for controlling and simulating a bridge model load change; and the bridge state detection analysis unit is used for analyzing a bridge state according to a bridge load change so as to acquire a bridge detection result. The automatic loading control unit comprises a controller, a model vehicle and a driving device used for driving the model vehicle to move on the bridge model. By using the bridge monitoring teaching system based on the designable bridge model, the designable bridge model is used so that various kinds of bridges can be conveniently assembled. The structure of the system is simple and cost is low. The system is suitable for carrying out large-area teaching popularization and can be well applied in teaching on aspects of a bridge static and dynamic power load test and health monitoring.
Description
Technical field
The present invention relates to bridge and the communications field, more particularly, to a kind of bridge monitoring religion based on designability bridge model
System.
Background technology
With the development of China's public affairs bridge cause, bridge gets more and more, and simultaneously existing many bridges also progress into
The maintenance stage.And As time goes on, its quantity also increases continuous, the maintenance day to bridge for the bridge management person
Benefit is paid attention to.Bridge final acceptance of construction and operation using a period of time after all by quiet, dynamical load test to its bearing capacity, skill
Art situation etc. is detected, large bridge also needs to understand its behaviour in service at any time by online health monitoring during operation uses
And safety.China several years ago puts into the infrastructure such as the highway engineering of construction in a large number, has generally entered maintaining in recent years
Phase, the detecting appraisal to bridge and health monitoring become long-term and urgent social need.
At present, in the teaching process of the bridge machinery of colleges and universities, theory teaching cannot substitute the effect of practical teaching.Above-mentioned
Related content there is no preferable experimental modelling method it is difficult to make student that science of bridge building entity and Test Detection Work are had to be
System, comprehensively cognitive, understanding and grasp, teaching efficiency is generally poor.Reason essentially consists in：Quiet, the dynamic load of true bridge
Test and health monitoring are required to practical engineering project as support, need to put into huge human and material resources resource, the test period is relatively
Long, typically can not repeat to test, the chance of student's participation practice seldom, even if allowing student arrive site visit practice, is pacified except existing
Full blast danger is outer, and student also can only see the experiment work of local, and the work such as substantial amounts of Structure Calculation, data analysiss, security evaluation
Make all to participate in and understand.Because the model that traditional earthwork engineering practical teaching is adopted is generally concrete component, steel structure
Part etc. it is difficult to voluntarily assembled, build, typically based on proving test, for other specialties, student is difficult to complete independently relatively
Autonomy, novelty test, student learning interest and enthusiasm is not high, and teaching efficiency is bad.Therefore, need a kind of new skill badly
Art means, can solve the problem that field test present in bridge machinery teaching needs with actual bridge for relying on, site tissue manages
The big problem of difficulty, high cost, risk.
Content of the invention
In view of this, the present invention provides a kind of bridge monitoring teaching system based on designability bridge model, to solve
The problems referred to above.
What the present invention provided is included based on the bridge monitoring teaching system of designability bridge model：
Bridge model, builds simulation bridge structure for emulation,
Automatically Loading Control unit, for controlling simulation bridge model loads change,
Bridge state-detection analytic unit, for being analyzed to bridge state according to bridge load change, obtains bridge
Testing result,
Described automatic Loading Control unit includes controller, model car and transports on bridge model for driving model car
Dynamic driving means, described driving means are connected with controller.
Further, described bridge state-detection analytic unit includes data acquisition module, data analysis module and assessment mould
Block, the bridge collecting status data is transferred to data analysis module by data acquisition module, described data analysis module according to
Bridge status data exports statistical graph, and evaluation module generates appraisal report according to statistical graph.
Further, described bridge model includes multiple bridge structures, and the weight-adjustable of described model car, according to different structure
The bridge model of type, the loading position of model car and class of loading, setting bridge machinery loading scheme, controller according to add
Load scheme Controlling model car is moved on bridge model accordingly.
Further, also include alarm unit, the secure threshold of default bridge state, when the inspection of bridge state-detection analytic unit
When the bridge status data surveyed exceedes the secure threshold upper limit, controller controls alarm unit to send warning, and controls driving means
Quit work.
Further, described data acquisition module includes strain transducer, displacement transducer, pressure transducer, acceleration biography
Sensor and temperature sensor, the bridge status data of the bridge model according to collection for the data analysis module, obtain each portion of bridge
The stress of position, amount of deflection, crack, frequency of vibration and type.
Further, also include external interface unit, described data acquisition module is connected with external interface unit.
Further, also include detection terminal, described detection terminal at least includes display module, input module and central authorities and processes
Device, described display module and input module are connected with central processing unit respectively, and described central processing unit is connected with controller.
Beneficial effects of the present invention：The bridge monitoring teaching system based on designability bridge model in the present invention, makes
Use programmable bridge model, can easily assembled different types of rridges simulate moreover it is possible to pass through the means such as the connection between weakening component
The cracking of bridge member, damage, or according to the imagination by multiple component independent assortments, assembly, design new structure, bridges, and
Load test is carried out to it, virtual test data is obtained by test, whether rationally to pass judgment on loading scheme, and according to test number
According to bearing capacity and the safety of assay bridge, the present invention have structure simple, with low cost it is adaptable to carry out large area
Teaching is promoted, and can perform well in that bridge is quiet, the teaching of dynamical load test and health monitoring aspect.
Brief description
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the principle schematic of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples：Fig. 1 is the structural representation of the present invention, Fig. 2
It is the principle schematic of the present invention.
As shown in figure 1, the bridge monitoring teaching system based on designability bridge model in the present embodiment, including
Bridge model, builds simulation bridge structure for emulation,
Automatically Loading Control unit, for controlling simulation bridge model loads change,
Bridge state-detection analytic unit, for being analyzed to bridge state according to bridge load change, obtains bridge
Testing result,
Described automatic Loading Control unit includes controller, model car and transports on bridge model for driving model car
Dynamic driving means, described driving means are connected with controller.
In the present embodiment, bridge model 1 is more than adopting the structure in Fig. 1, and beam can adopt multiple T-shaped short beams, many
Removably head and the tail connect individual T-shaped short beam, and beam can also be box beam, and described box beam is multiple, with can between multiple box beams
Dismounting mode head and the tail connect, bridge model also includes Sarasota, and described beam is provided with for being connected by rope between Sarasota
Hole.By the structure of different beams, various types of bridge models can be built, the bridge model 1 in the present embodiment is permissible
By the way of playing with building blocks, by multiple T-shaped short beams 4, removably head and the tail connect, and form bridge, and supporter 5 is provided with
The groove being matched with T-shaped beam size, T-shaped beam is inserted in groove, can T-shaped beam be carried out making fixation, when using box beam
When, in the present embodiment, can build and can easily be assemblied into by splice plate using the larger groove of width gap
The different types of rridges such as simply supported girder bridge, continuous bridge, continuous steel frame bridge, cable-stayed bridge, suspension bridge, not only can with construction simulation process,
Carry out Construction control teaching, splice plate builds can be using the structure of similar happy high building blocks, it would however also be possible to employ lucite, aluminum
Material, finer wire etc. are easy to the material processed, and each component minification of bridge are made as the module of batch, reserved in module
Pin joint hole, key, are not drawn in accompanying drawing, and those skilled in the art can understand multiple implementations by prior art, as long as energy
Enough satisfactions are spliced into various types of bridge structures, and the concrete structure that here no longer builds to splice plate repeats；And
It is carried out with load test, understands and grasp difference and the pluses and minuses of various bridge type stress systems, can be according to the imagination, adhesion
The knowledge such as, aesthetics, by different component independent assortment, assembly, are designed to new structure, and by load test verify its structure,
Whether construction is reasonable, it would however also be possible to employ the teaching software auxiliary checking of exploitation.Can people by the bridge model of various structures type
For setting structure disease, defect, can pass through to weaken the means such as the connection between component (as consolidation is changed to hinged, change support shape
Condition etc.) the simulation cracking of bridge member, damage, and by test and simulation (the software simulation of model test and exploitation), by reality
Survey the caused structure stress system of the different damage of data analysiss, the change of feature, realize lesion assessment and status monitoring.
In the present embodiment, automatic Loading Control System is made up of model car 2, driving means and controller, and can design
Property bridge model building blocks use cooperatively, its function be mainly control simulation car 2 on bridge model with multiple speeds advance, after
Move back, stop at an arbitrary position etc., simulation car 2 loading capacity can change (as changed by increasing and decreasing counterweight).Simulation car 2 adopts electric power
Drive, controller issues instructions to digital output module and controls driving means to work, and realizes advance, the retrogressing of simulation car 2；Red
Outside line sensor, ultrasonic range finder sensor detect border, send controller to by digital input module after distance signal, control
According to the current state automatic command of dolly, it makes the actions such as parking or forward and back to device processed.
In the present embodiment, bridge state-detection analytic unit includes data acquisition module, data analysis module and assessment
Module, the bridge collecting status data is transferred to data analysis module by data acquisition module, described data analysis module root
According to bridge status data export statistical graph, evaluation module according to statistical graph generate appraisal report, by test data collection,
Record, bridge state analysiss, bridge safty assessment, early warning etc..Bridge state-detection and safety evaluation analysis have limited
The functions such as meta-model calculating, Test Data Collecting, analysis, can be write using Labview graphical programming language, include pole
The hardware driving interface of horn of plenty, can adopt Hardware match communication with general number, and can simulate the automatic Loading Control System of car 2 and protect
Hold command synchronization, bridge model includes multiple bridge structures, and the weight-adjustable of described model car, according to the bridge of different types of structure
Beam model, the loading position of model car and class of loading, the loading scheme of setting bridge machinery, controller is according to loading scheme control
Simulation car is moved on bridge model accordingly, according to test data, generates statistical graph, draws under load action
Load-Stress figure, load-deflection curves, crack pattern etc., student calculates the verification system of loading test after carrying out comprehensive analysis
Number, evaluates to the intensity of bridge structure, rigidity, cracking resistance etc., and the bearing capacity of final assessment bridge and safety are simultaneously compiled
Test report processed.
In the present embodiment, the secure threshold of default bridge state, when the bridge of bridge state-detection analytic unit detection
When status data exceedes the secure threshold upper limit, controller controls alarm unit to send warning, and controls driving means to quit work.
During education experiment, by controlling simulation car 2 to be carried in the different parts of bridge model or being driven through with different speeds
Bridge, controls number to adopt hardware simultaneously and is acquired, records, obtain the various mechanical responses at each position of bridge.Work as load action
When the output value of lower virtual-sensor exceedes default secure threshold, system early warning or termination load.The bridge model loading
Can be flawless or default defect, test data is processed, and measured data is tied with Theoretical Calculation
Fruit is analyzed, evaluates, the test report such as student's establishment bridge capacity, safety evaluation.
Data acquisition module in the present embodiment includes strain transducer, displacement transducer, pressure transducer, acceleration biography
Sensor and temperature sensor, the bridge status data of the bridge model according to collection for the data analysis module, obtain each portion of bridge
The stress of position, amount of deflection, crack, frequency of vibration and type.By the present embodiment, can complete to bridge model difference testing section
Static loading test, and the power load test such as various speed sport car, brake, jump car, environmental excitation, can test and obtain bridge
The series of physicals such as the stress (strain) of beam model, displacement, amount of deflection, crack, acceleration, the natural frequency of vibration, the vibration shape, impact coefficient refer to
Mark, can get the assessment results such as whether load carrying capacity of bridge, damage influence degree, bridge type stress reasonable by analysis, tested
Need in journey systematically to know with science of bridge building, structural mechanics, the mechanics of materials, measuring technology, signal processing etc. are many
Know, cultivated the manipulative ability of student, analyzed solve problem, report and write and the integration capabilities such as sense of community.
In the present embodiment, also include detection terminal, described detection terminal at least include display module, input module and in
Central processor, described display module and input module are connected with central processing unit respectively, and described central processing unit is with controller even
Connect, student can rationally determine worst controlling sections (in section according to the loading characteristic of selected bridge type in detection terminal
In click), line is affected (in advance by conditions such as bridge type, across footpaths by the internal force that the display module of detection terminal exports respective cross-section
It is calculated, according to student's Selection and call), student carries out least favorable cloth load to determine in design control on internal force impact line
Power, loading test internal force, finder charge size and load effciency etc., and work out loading test loading scheme, for example determine and load
Car quantity, loading condition, loading position, load classification etc., during execution load test, system is according to the predetermined test side of student
Case, simulation test loads vehicle and carries out load test to bridge, and the sensor that structural model in loading procedure is laid can export
Value simultaneously records, and student can be by the stress (strain) of the form such as picture, chart, numerical value observation bridge structure, amount of deflection, crack etc.
Change.Software is directed to different bridge types, class of loading, loading position etc. in advance and calculates the strain at each position of bridge, amount of deflection, crack
Position, crack length and width scheduling theory result, in experimentation, can be controlled by using stochastic variable, make the output of sensor
Value random fluctuation within the specific limits, to simulate the response of normal bridge and abnormal bridge, reflects engineering structure mechanical property
The discreteness of energy, when the output value of virtual-sensor under load action exceedes default secure threshold, system alarm is simultaneously temporary
Stop testing, student should decide to continue with loading or termination test after being analyzed；Unreasonable (the load of testing program as student's establishment
Excessive, loading position is unreasonable etc.), the situation that bridge model collapses is occurred by detection terminal, points out student to regroup
Loading scheme.
Finally illustrate, above example only in order to technical scheme to be described and unrestricted, although with reference to relatively
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, the objective without deviating from technical solution of the present invention and scope, and it all should be covered at this
In the middle of the right of invention.
Claims (7)
1. a kind of bridge monitoring teaching system based on designability bridge model it is characterised in that：Including
Bridge model, builds simulation bridge structure for emulation,
Automatically Loading Control unit, for controlling simulation bridge model loads change,
Bridge state-detection analytic unit, for being analyzed to bridge state according to bridge load change, obtains bridge machinery
As a result,
Described automatic Loading Control unit includes controller, model car and moves on bridge model for driving model car
Driving means, described driving means are connected with controller.
2. the bridge monitoring teaching system based on designability bridge model according to claim 1 it is characterised in that：Institute
State bridge state-detection analytic unit and include data acquisition module, data analysis module and evaluation module, data acquisition module will
The bridge status data collecting is transferred to data analysis module, and described data analysis module exports system according to bridge status data
Meter chart, evaluation module generates appraisal report according to statistical graph.
3. the bridge monitoring teaching system based on designability bridge model according to claim 2 it is characterised in that：Institute
State bridge model and include multiple bridge structures, the weight-adjustable of described model car, according to bridge model, the mould of different types of structure
The loading position of type car and class of loading, the loading scheme of setting bridge machinery, controller is according to loading scheme Controlling model car
Bridge model is moved accordingly.
4. the bridge monitoring teaching system based on designability bridge model according to claim 1 it is characterised in that：Also
Including alarm unit, the secure threshold of default bridge state, when the bridge status data of bridge state-detection analytic unit detection
When exceeding the secure threshold upper limit, controller controls alarm unit to send warning, and controls driving means to quit work.
5. the bridge monitoring teaching system based on designability bridge model according to claim 1 it is characterised in that：Institute
State data acquisition module and include strain transducer, displacement transducer, pressure transducer, acceleration transducer and temperature sensor,
The bridge status data of the bridge model according to collection for the data analysis module, obtains the stress at each position of bridge, amount of deflection, splits
Seam, frequency of vibration and type.
6. the bridge monitoring teaching system based on designability bridge model according to claim 5 it is characterised in that：Also
Including external interface unit, described data acquisition module is connected with external interface unit.
7. the bridge monitoring teaching system based on designability bridge model according to claim 1 it is characterised in that：Also
Including detection terminal, described detection terminal at least includes display module, input module and central processing unit, described display module and
Input module is connected with central processing unit respectively, and described central processing unit is connected with controller.
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Cited By (7)
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| CN109839441A (en) * | 2019-03-20 | 2019-06-04 | 合肥工业大学 | A kind of bridge Modal Parameters Identification |
| CN110186747A (en) * | 2019-05-07 | 2019-08-30 | 天津大学 | A kind of mobile load vehicle model of modularization for bridge model test |
| CN111175068A (en) * | 2020-02-24 | 2020-05-19 | 长沙理工大学 | Device and method for typical damage simulation of cable-stayed bridge |
| CN111562122A (en) * | 2020-05-07 | 2020-08-21 | 汪小琴 | Model mechanics simulation detection device for bridge structure design and detection method thereof |
| CN112098022A (en) * | 2020-08-21 | 2020-12-18 | 西南交通大学 | Device for static and dynamic load test of bridge model, control method and application |
| CN113514110A (en) * | 2021-08-19 | 2021-10-19 | 张旭辉 | Road and bridge engineering intelligent measurement system |
| CN116698318A (en) * | 2023-07-20 | 2023-09-05 | 山东高速集团有限公司创新研究院 | Bridge crack identification device and method based on acceleration monitoring data |
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| CN113514110A (en) * | 2021-08-19 | 2021-10-19 | 张旭辉 | Road and bridge engineering intelligent measurement system |
| CN116698318A (en) * | 2023-07-20 | 2023-09-05 | 山东高速集团有限公司创新研究院 | Bridge crack identification device and method based on acceleration monitoring data |
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Application publication date: 20170215 |