CN106197911A - A kind of Test on Bridge Loading method - Google Patents
A kind of Test on Bridge Loading method Download PDFInfo
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- CN106197911A CN106197911A CN201610536294.9A CN201610536294A CN106197911A CN 106197911 A CN106197911 A CN 106197911A CN 201610536294 A CN201610536294 A CN 201610536294A CN 106197911 A CN106197911 A CN 106197911A
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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
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges
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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
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to Bridge Inspection field, disclose a kind of Test on Bridge Loading method, comprise the following steps: S1. arranges dynamic weighing system at the end of the bridge of bridge, measure content and include the wheelbase through vehicle and axle weight；S2. on bridge, arrange that some picture pick-up devices carry out full-bridge face and cover shooting, measure the position distribution of bridge floor vehicle；S3. placement sensor on bridge, measures static load parameter and the kinetic parameter of bridge structure；S4. the full-bridge face picture pick-up device in synchronizing step S2 and the data acquisition time of the sensor in step S3；S5. the ability of bridge bearing load is evaluated；Wherein step S1～S5 are all to carry out under the normal train-passing through conditions of bridge.Present invention saves experimentation cost, and owing to need not interrupt or close traffic, continuous several times test can be carried out, it is ensured that the real-time of test, seriality and data volume, and then improve the integrity of loading test data and the accuracy of analysis.
Description
Technical field
The invention belongs to Bridge Inspection field.
Background technology
Along with developing rapidly of new material and construction technology, Bridges in Our Country construction aspect achieves remarkable achievement,
The Large scale construction of bridge and utilization, it is desirable to technical staff must pay much attention to the safety problem of bridge.Bridge is from coming into operation
To removing in this cycle, the load quantity being subject to is many and change is complicated.Bridge is within the use cycle, and bridge structure is long-term
Under load action, and the degeneration of bridge inner materials performance, the bearing capacity causing bridge is not enough, this reacting condition bridge
The change of the bearing capacity during life-time service, so Test on Bridge Loading is the weight of research and analysis bridge health situation
Want means.Existing load test method is mainly: measures closure of less period bridge deck traffic in garage, arranges lotus on bridge
Carry testing equipment, utilize test vehicle location on bridge to load, by loading test equipment, the response of bridge structure is entered
Row is measured and is analyzed, the bearing capacity that assessment bridge is current.But, existing loading test blocks traffic due to needs, test
It is pressed for time, the cycle of test is long, generally 1 year or carry out a loading test for many years, causes the data that test is obtained
Measure less and imperfect, affect accuracy and the real-time of Test on Bridge Loading, it addition, close traffic also give bridge use and
Traffic brings inconvenience.
Summary of the invention
The invention is intended to provide a kind of Test on Bridge Loading method, process of the test need not block traffic, and is provided that complete
Real time data, improve the accuracy of Test on Bridge Loading.
A kind of Test on Bridge Loading method, comprises the following steps: S1. arranges dynamic weighing system at the end of the bridge of bridge, surveys
Amount content includes the wheelbase through vehicle and axle weight；S2. on bridge, arrange that some picture pick-up devices carry out full-bridge face and cover shooting,
Measure the position distribution of bridge floor vehicle；S3. placement sensor on bridge, the static load parameter measuring bridge structure is joined with power
Number；S4. the full-bridge face picture pick-up device in synchronizing step S2 and the data acquisition time of the sensor in step S3；S5. bridge is evaluated
The ability of beam bearing load；Wherein step S1～S5 are all to carry out under the normal train-passing through conditions of bridge.
Beneficial effect: the whole process of the test of the present invention all bridge vehicle normal through in the case of carry out, end of the bridge
The dynamic weighing system arranged accurately measures the wheelbase through vehicle and axle weight, it is possible to be accurate to the applying position of load
Point, i.e. wheel position；The full-bridge face of picture pick-up device covers, and will not omit all positions of bridge floor；Synchronize full-bridge face picture pick-up device
Data time with sensor, it is simple to analyze sometime that the position distribution of load stream and structural response be one by one in some bridge structure
Corresponding.The present invention depends on bridge floor random load stream, and i.e. pass through vehicle stream, bridge loads and measures bridge knot in real time
The response value of structure, it is not necessary to interrupt or close traffic, it is to avoid the loss that closure traffic brings, utilizes the car of normal pass on bridge
Load object as test, it is not necessary to specific placement test vehicle, save experimentation cost, and owing to need not interrupt or close
Traffic, can carry out continuous several times test, it is ensured that the real-time of test, seriality and data volume, and then improve loading test
The integrity of data and the accuracy of analysis.
Further, the content that described step S1 is measured also includes wheelspan, the license board information of registration of vehicle.By current vehicle
Car plate, wheelbase, axle weight and wheelspan one_to_one corresponding, be used for recording subjects, it is simple to be analyzed subjects.
Further, bridge full-bridge face is carried out stress and strain model by described step S2, scale location dimension on grid, adjacent take the photograph
Image pickup scope alternate covering as equipment.Each for bridge floor location point is navigated in grid, it is simple to be more accurately determined vehicle
Position.
Further, the bridge structure static load parameter described in described step S3 is stress, displacement, crack, inclination angle or Suo Li；
Kinetic parameter is self-vibration characteristic parameter or dynamic response value.Combined with kinetic parameter index by static load parameter index, it is simple to
The performance of bridge structure is carried out accurate evaluation.
Further, the concrete grammar that step S5 Bridge Bearing Capacity Evaluation uses is: arrange bridge structure affects line
Model, the load stream that applying size and location distribution determines obtains theoretical value A of bridge structure static load parameter on this model, real
Execute step S1～the measured value B of S4 acquisition bridge structure static load parameter, if then evaluation structural-load-carrying capacity meets requirement；If, then
Evaluation structural-load-carrying capacity is unsatisfactory for requirement, is wherein static load parameter verification lower coefficient limit, for the static load parameter verification coefficient upper limit.
When a unit load structurally moves, represent that it determines a certain specific stressed effect Changing Pattern on position or cross section
Function curve be referred to as this structure under load action the specific stressed effect in a certain cross section affect line, for space structure
Speech, traveling load when different lanes, ad-hoc location stressed effect to affect line different；By the shadow in bridge structure
Ring imposed load on line model and obtain the static load parameter theory value of bridge structure, and and bridge actual measurement static load parameter combine carry out right
Than analyzing, analyze the health status of bridge structure in real time.
Further, step S5 Bridge Bearing Capacity Evaluation use concrete grammar be: S51. by described for static load parameter
Calculating with kinetic parameter and obtain bridge structure comprehensive evaluation index, concrete calculation is: K=(X1σ+X2L+X3C+X4O+X5T)+
( Y1N+Y2D), wherein K is the comprehensive evaluation index of bridge structure, X1~X5For static load parameters weighting coefficient, if no this item, XiFor
0, σ is structure stress of bridge parameter evaluation index, and L is that bridge structure conjugates parameter evaluation index, and C is bridge structure fracture parameters
Evaluation index, O is bridge structure dip angle parameter evaluation index, and T is bridge structure rope force parameter evaluation index；Y1~Y2Join for power
Number weight coefficient, N is bridge structure self-vibration characteristic parameter evaluation index, and D is bridge structure dynamic response parameter evaluation index；
S52. evaluation bridge structure comprehensive evaluation index, if N≤K≤M, then evaluation structural-load-carrying capacity meets requirement, if K≤N or K >=
M, then evaluation structural-load-carrying capacity is unsatisfactory for requirement, and wherein M is the comprehensive evaluation index upper limit, and N is comprehensive evaluation index lower limit.Will
Static load parameter and kinetic parameter combine and carry out comprehensive evaluation, it is simple to the health status of bridge structure is carried out more comprehensive,
Judge accurately.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of Test on Bridge Loading embodiment of the method for the present invention；
Fig. 2 is Test on Bridge Loading embodiment of the method pilot system schematic diagram of the present invention；
Fig. 3 is Test on Bridge Loading embodiment of the method pilot system schematic top plan view of the present invention.
Detailed description of the invention
Below by detailed description of the invention, the present invention is further detailed explanation:
This programme Bridge load test method, comprises the following steps that (following steps are all in the case of vehicle normal pass
Carry out, using current vehicle as the loading object of loading test), method flow as shown in Figure 1:
S1. the end of the bridge at bridge arranges dynamic weighing system, measures content and includes the wheelbase through vehicle and axle weight, measurement interior
Hold and also include car plate and wheelspan, by car plate and wheelbase, axle weight, the wheelspan one_to_one corresponding of current vehicle, be used for recording test and load
Object, it is simple to test loading is analyzed.
S2. arranging on bridge that some picture pick-up devices carry out full-bridge face and cover shooting, the position measuring bridge floor vehicle is divided
Cloth, carries out stress and strain model by bridge full-bridge face, scale location dimension on grid, and the image pickup scope intersection of adjacent picture pick-up device is covered
Lid.Each for bridge floor location point is navigated in grid, it is simple to be more accurately determined the position of vehicle.
S3. placement sensor on bridge, measures static load parameter and the kinetic parameter of bridge structure；
S4. the full-bridge face picture pick-up device in synchronizing step S2 and the data time of the sensor in step S3；
S5. the ability of bridge bearing load is evaluated, the concrete side that the ability static load parameter evaluating of step S5 Bridge carrying uses
Method is: in load-time equipment built-in bridge structure affect line model, apply to determine the load stream that size and location is distributed
Obtain static load parameter theory value A of bridge structure in this model, implement step S1～S4 obtains bridge structure static load Parameter
Measured value B, affect the bridge structure shadow that the test of line can use patent (Patent No. ZL200810070102.5) to provide
Ring line wireless remote automatic test equipment to measure, it is also possible to drawn by finite element analysis, or actual measurement draws.
When evaluating the static load index of bridge structure, if then evaluation structural-load-carrying capacity meets requirement；If then evaluating structure
Bearing capacity is unsatisfactory for requirement, is wherein checkout coefficient lower limit, for the checkout coefficient upper limit.When a unit load structurally moves
Time dynamic, represent that it determines that on position or cross section, the function curve of a certain specific stressed effect Changing Pattern is referred to as this structure lotus
Under load effect the specific stressed effect in a certain cross section affect line, for space structure, traveling load is at different track row
When sailing, ad-hoc location stressed effect to affect line different；Bridge is obtained by the imposed load on line model that affects in bridge structure
The static load parameter theory value of girder construction, and carry out calculation and check with bridge actual measurement static load parameter combination, analyze bridge structure in real time
Health status.
The one in static load parameter and kinetic parameter can be utilized in the response of the stream that is further applied load for reacting bridge structure,
Can also be simultaneously the combination of static load parameter and kinetic parameter, concrete evaluation mode be: S51. by described for static load parameter with move
Force parameter calculates and obtains bridge structure comprehensive evaluation index, and concrete calculation is: K=(X1 σ+X2L+X3C+X4O+X5T)+(
Y1N+Y2D), wherein K is the comprehensive evaluation index of bridge structure, and X1 ~ X5 is static load parameters weighting coefficient, if no this item, Xi is
0, σ is structure stress of bridge parameter evaluation index, and L is that bridge structure conjugates parameter evaluation index, and C is bridge structure fracture parameters
Evaluation index, O is bridge structure dip angle parameter evaluation index, and T is bridge structure rope force parameter evaluation index；Y1 ~ Y2 is power
Parameters weighting coefficient, N is bridge structure self-vibration characteristic parameter evaluation index, and D is bridge structure dynamic response parameter evaluation index；
S52. evaluation bridge structure comprehensive evaluation index, if N≤K≤M, then evaluation structural-load-carrying capacity meets requirement, if K≤N or K >=
M, then evaluation structural-load-carrying capacity is unsatisfactory for requirement, and wherein M is the comprehensive evaluation index upper limit, and N is comprehensive evaluation index lower limit.Will
Static load parameter and kinetic parameter combine and carry out comprehensive evaluation, it is simple to the health status of bridge structure is carried out more comprehensive,
Judge accurately.
Above-mentioned test method uses the pilot system as shown in accompanying drawing 2 and accompanying drawing 3 to implement, and high-definition camera system is arranged in bridge
The surface of beam, high-definition camera system includes multiple high-definition camera, and the quantity of high-definition camera can be according to the actual (tube) length of bridge
Degree is arranged, and the image pickup scope of adjacent high-definition camera to realize intersecting.Sensing system it is disposed with in the roadbed of bridge,
Including multiple measurement road surfaces stress, displacement, crack, inclination angle and the static sensor of Suo Li, and the self-vibration of survey calculation road surface is special
Property parameter and the dynamic pickup of dynamic response value.Being disposed with dynamic weighing system on the end of the bridge of bridge, measurement content is vehicle
Wheelbase, wheelspan and axle weight, dynamic weighing system be also equipped with image instrument, for the license board information of registration of vehicle.
Above-described is only embodiments of the invention, and in scheme, the known concrete general knowledge such as technology and characteristic is not made at this
Too much describe.It should be pointed out that, for a person skilled in the art, on the premise of without departing from technical solution of the present invention, also
May be made that some deformation and improvement, these also should be considered as protection scope of the present invention, and these are real all without affecting the present invention
The effect executed and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, description
In detailed description of the invention etc. record the content that may be used for explaining claim.
Claims (6)
1. a Test on Bridge Loading method, it is characterised in that comprise the following steps:
S1. the end of the bridge at bridge arranges dynamic weighing system, measures content and includes the wheelbase through vehicle and axle weight；
S2. on bridge, arrange that some picture pick-up devices carry out full-bridge face and cover shooting, measure the position distribution of bridge floor vehicle；
S3. placement sensor on bridge, measures static load parameter and the kinetic parameter of bridge structure；
S4. the full-bridge face picture pick-up device in synchronizing step S2 and the data acquisition time of the sensor in step S3；
S5. the ability of bridge bearing load is evaluated；
Wherein step S1～S5 are all to carry out under the normal train-passing through conditions of bridge.
Test on Bridge Loading method the most according to claim 1, it is characterised in that: the content that described step S1 is measured also is wrapped
Include wheelspan, the license board information of registration of vehicle.
Test on Bridge Loading method the most according to claim 1, it is characterised in that: by bridge full-bridge face in described step S2
Carry out stress and strain model, scale location dimension on grid, the image pickup scope alternate covering of adjacent picture pick-up device.
4. according to the Test on Bridge Loading method described in claim 1,2 or 3, it is characterised in that: described in described step S3
Bridge structure static load parameter is stress, displacement, crack, inclination angle or Suo Li；Kinetic parameter is self-vibration characteristic parameter or dynamic response
Value.
Test on Bridge Loading method the most according to claim 4, it is characterised in that step S5 Bridge bearing capacity static load
The concrete grammar that parameter evaluating uses is: arrange the line model that affects of bridge structure, applies size and location and is distributed the lotus determined
Current-carrying obtains theoretical value A of bridge structure static load parameter on this model, implements step S1～S4 obtains bridge structure static load ginseng
The measured value B of number, if then evaluation structural-load-carrying capacity meets requirement；If then evaluation structural-load-carrying capacity is unsatisfactory for requirement, its
In be static load parameter verification lower coefficient limit, for the static load parameter verification coefficient upper limit.
Test on Bridge Loading method the most according to claim 4, it is characterised in that step S5 Bridge Bearing Capacity Evaluation
The concrete grammar used is:
S51. acquisition bridge structure comprehensive evaluation index, concrete calculation are calculated by described for static load parameter and kinetic parameter
For: K=(X1σ+X2L+X3C+X4O+X5T)+( Y1N+Y2D), wherein K is the comprehensive evaluation index of bridge structure, X1~X5For static load
Parameters weighting coefficient, if no this item, XiBeing 0, σ is structure stress of bridge parameter evaluation index, and L is that bridge structure displacement parameter is commented
Valency index, C is bridge structure fracture parameters evaluation index, and O is bridge structure dip angle parameter evaluation index, and T is bridge structure rope
Force parameter evaluation index；Y1~Y2For kinetic parameter weight coefficient, N is bridge structure self-vibration characteristic parameter evaluation index, and D is bridge
Structural dynamic response parameter evaluation index；
S52. evaluation bridge structure comprehensive evaluation index, if N≤K≤M, then evaluation structural-load-carrying capacity meets requirement, if K≤N
Or K >=M, then evaluation structural-load-carrying capacity is unsatisfactory for requirement, and wherein M is the comprehensive evaluation index upper limit, and N is under comprehensive evaluation index
Limit.
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| CN201610536294.9A CN106197911A (en) | 2016-07-08 | 2016-07-08 | A kind of Test on Bridge Loading method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132011A (en) * | 2017-05-31 | 2017-09-05 | 中南大学 | A kind of bridge quick determination method based on influence line |
| CN109118776A (en) * | 2018-10-10 | 2019-01-01 | 中交基础设施养护集团有限公司 | A method of vehicular load spatial distribution is identified based on bridge monitoring data |
| CN109556812A (en) * | 2018-12-13 | 2019-04-02 | 佛山科学技术学院 | The lateral interaction power simulator of a kind of pedestrian and foot bridge |
| CN110926735A (en) * | 2019-11-29 | 2020-03-27 | 邢台市交通运输局 | Bridge structure rapid diagnosis method based on multidimensional dynamic parameters |
| CN109629407B (en) * | 2018-12-21 | 2020-07-31 | 东南大学 | Intelligent bridge expansion joint device and application thereof |
| CN112857718A (en) * | 2021-01-28 | 2021-05-28 | 合肥工业大学 | Bridge bearing capacity rapid assessment method based on mobile vehicle test |
| WO2021156784A1 (en) | 2020-02-05 | 2021-08-12 | Sensima Inspection Sàrl | Method of monitoring health status of bridges in normal traffic conditions |
| CN113358463A (en) * | 2021-05-19 | 2021-09-07 | 南通市顺通公路交通工程检测有限公司 | Method for detecting load bearing capacity of highway bridge |
| CN113390733A (en) * | 2021-05-07 | 2021-09-14 | 河海大学 | Bridge column pile soaking section critical dynamic load damage experimental device and method |
| CN113567027A (en) * | 2021-08-10 | 2021-10-29 | 尹恒 | Road overload grade working condition monitoring method and system |
| CN114169039A (en) * | 2021-10-22 | 2022-03-11 | 江苏开放大学（江苏城市职业学院） | Bridge vehicle load safety early warning system based on shooting recognition |
| CN114544214A (en) * | 2022-03-02 | 2022-05-27 | 苏交科集团股份有限公司 | Bridge loading vehicle running track real-time monitoring equipment and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107132011A (en) * | 2017-05-31 | 2017-09-05 | 中南大学 | A kind of bridge quick determination method based on influence line |
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| CN110926735A (en) * | 2019-11-29 | 2020-03-27 | 邢台市交通运输局 | Bridge structure rapid diagnosis method based on multidimensional dynamic parameters |
| WO2021156784A1 (en) | 2020-02-05 | 2021-08-12 | Sensima Inspection Sàrl | Method of monitoring health status of bridges in normal traffic conditions |
| CN112857718A (en) * | 2021-01-28 | 2021-05-28 | 合肥工业大学 | Bridge bearing capacity rapid assessment method based on mobile vehicle test |
| CN113390733A (en) * | 2021-05-07 | 2021-09-14 | 河海大学 | Bridge column pile soaking section critical dynamic load damage experimental device and method |
| CN113390733B (en) * | 2021-05-07 | 2022-07-29 | 河海大学 | Bridge column pile soaking section critical dynamic load damage experimental device and method |
| CN113358463A (en) * | 2021-05-19 | 2021-09-07 | 南通市顺通公路交通工程检测有限公司 | Method for detecting load bearing capacity of highway bridge |
| CN113567027A (en) * | 2021-08-10 | 2021-10-29 | 尹恒 | Road overload grade working condition monitoring method and system |
| CN114169039A (en) * | 2021-10-22 | 2022-03-11 | 江苏开放大学（江苏城市职业学院） | Bridge vehicle load safety early warning system based on shooting recognition |
| CN114544214A (en) * | 2022-03-02 | 2022-05-27 | 苏交科集团股份有限公司 | Bridge loading vehicle running track real-time monitoring equipment and using method thereof |
| CN114544214B (en) * | 2022-03-02 | 2024-01-26 | 苏交科集团股份有限公司 | Real-time monitoring equipment for running track of bridge loading vehicle and application method thereof |
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Application publication date: 20161207 |