CN106441749A - Bridge dynamic deflection detection method and device based on microwave interference - Google Patents
Bridge dynamic deflection detection method and device based on microwave interference Download PDFInfo
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- CN106441749A CN106441749A CN201610866252.1A CN201610866252A CN106441749A CN 106441749 A CN106441749 A CN 106441749A CN 201610866252 A CN201610866252 A CN 201610866252A CN 106441749 A CN106441749 A CN 106441749A
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- G—PHYSICS
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- 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
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
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Abstract
The invention discloses a bridge dynamic deflection detection method and device based on microwave interference. The method includes the steps: S1 acquiring geometrical characteristic parameters of a microwave interference detection system for a bridge to be detected in the detection process, and acquiring atmospheric dry temperature, atmospheric steam partial pressure and atmospheric dry air partial pressure in detection; S2 calculating an atmospheric refraction index in detection according to the atmospheric dry temperature, the atmospheric steam partial pressure and the atmospheric dry air partial pressure; S3 calculating dynamic deflection of the bridge in detection by a bridge dynamic deflection correction model according to the atmospheric refraction index and the geometrical characteristic parameters. According to the method, the influence of the atmospheric dry temperature, the atmospheric steam partial pressure and the atmospheric dry air partial pressure on the microwave propagation process is taken into consideration, the influence of environmental factors such as temperature, humidity and atmospheric pressure on ground microwave interference detection precision due to season and time difference is avoided, and dynamic deflection detection precision of the bridge is improved.
Description
Technical field
The invention belongs to Bridge Inspection field, and in particular to a kind of bridge dynamic deflection based on microwave interference is detected
Method and device.
Background technology
With the development of high-speed railway, the operation mileage of China's high ferro has reached 20,000 kilometers.Its Bridge the line is busy road ratio
Average about 54%.During railroad bridge operation, due to a variety of causes, the damage which can be caused different degrees of and destruction.In order to
Ensure the safe operation of Existing Railway Bridges, and extend its service life as far as possible, need a kind of altofrequency, high-precision technology
Dynamic deflection amount during means detection beam body overload, and then its health status and safety are analyzed and assess.
Technology currently used for railroad bridge dynamic dynamic deflection detection is divided into contact method and non-contact method.Contact
Formula method can obtain higher precision, such as the sensor such as accelerometer, laser interferometer, displacement meter and LVDT, but which needs
The test position of railroad bridge to be fixed on, the railroad bridge being especially located on road, river and irrigation canals and ditches etc., can undoubtedly increase
Plus the difficulty of railroad bridge dynamic dynamic deflection detection.In order to overcome the shortcoming of touch sensor, non-contact method has become
For the focus of bridge dynamic dynamic deflection detection, mainly include laser, GPS, vision-based detection and ground interferometer radar.
Laser is a kind of technology of high precision test change in displacement, and precision is up to 0.1mm, but its apparatus expensive, and not
The change in displacement perpendicular to laser beam can be obtained.GPS is used for the dynamic displacement of large-size pliable structure thing (such as suspension bridge) and detects
Than convenient, but as its error and shift value are almost the same order of magnitude, it is not particularly suited for the less reinforced concrete of change in displacement
The dynamic deformation detection of soil structure thing, and sample frequency is generally below 20Hz, in addition random noise and multipath effect increased
The difficulty of data analysiss.Vision-based detection is another effective non-contact detecting means, and which mainly adopts high speed camera, synchronization
Controller, high-speed collection card and made Target point etc. are constituted, although its relative accuracy can reach 1:10000, but magnanimity number
Efficiency is greatly reduced according to the complexity for processing and control screen cloth sets.In a word, the detection range of traditional dynamic deflection detection technique little,
Detecting distance is short, precision is low, affected by environment big.
Content of the invention
The technical problem to be solved is how to improve the accuracy of detection of bridge dynamic deflection.
For this technical problem, the invention provides a kind of method that bridge dynamic deflection based on microwave interference is detected,
Including：
S1：Microwave interference detecting system is obtained to the geometrical characteristic parameter during bridge machinery to be detected, Yi Jiben
Big air dry temperature, atmospheric water vapour partial pressure and air dry air partial pressure during secondary detection；
S2：When calculating this detection according to the big air dry temperature, atmospheric water vapour partial pressure and air dry air partial pressure
Air index；
S3：According to the air index and the geometrical characteristic parameter, this is calculated using bridge dynamic deflection correction model
The dynamic deflection of the bridge of secondary detection；
Wherein, the geometrical characteristic parameter includes the central point of the radar of the microwave interference detecting system to the bridge
The distance of lower surface place plane and detect at least one times the microwave interference detecting system for obtaining radar central point
The radial distance between measuring point to be checked on the bridge.
Alternatively, step S2 includes：
According to formulaCalculate this detection
When the air index；
Wherein, n represents the air index, and t represents the big air dry temperature, pdRepresent the air dry air partial pressure
Power, pwRepresent the atmospheric water vapour partial pressure.
Alternatively, step S3 includes：
Obtain the microwave interference detecting system radar central point to the lower surface place plane of the bridge away from
From, and detect at least one times the microwave interference detecting system for obtaining radar central point to be checked on the bridge
Radial distance between measuring point；
According to formulaThe measuring point to be checked is calculated in the vertically bridge
On the direction of face lower surface, parallel deviate is in the distance of the reference plane of the bridge floor lower surface, institute when detecting as this
State the dynamic deflection of bridge；
Wherein, diThe dynamic deflection of bridge when representing that this detects, RiRepresent the radial distance that i ＆ lt detection is obtained,
Ri-1Represent the i-th -1 time and the radial distance for obtaining is detected, n represents the air index, and h represents microwave interference detecting system
The central point of radar is to the distance of the lower surface place plane of the bridge.
Alternatively, the plane that the bridge lower surface is located parallel to the road surface on the bridge.
Alternatively, the reference plane are parallel to the bridge lower surface, and between the bridge lower surface away from
From being equal to which the distance between with road surface place plane；
The measuring point to be checked is located in the reference plane.
On the other hand, present invention also offers a kind of device that detects of bridge dynamic deflection based on microwave interference, including：
Acquisition module, interferes detecting system to the geometrical characteristic parameter during bridge machinery to be detected for obtaining,
And big air dry temperature during this detection, atmospheric water vapour partial pressure and air dry air partial pressure；
Computing module, for calculating according to the big air dry temperature, atmospheric water vapour partial pressure and air dry air partial pressure
Air index during this detection；
Processing module, for according to the air index and the geometrical characteristic parameter, being corrected using bridge dynamic deflection
Model calculates the dynamic deflection of the bridge of this detection；
Wherein, the geometrical characteristic parameter includes the central point of the radar of the microwave interference detecting system to the bridge
The distance of lower surface place plane and detect at least one times the microwave interference detecting system for obtaining radar central point
The radial distance between measuring point to be checked on the bridge.
Alternatively, the computing module is used for according to formula
Calculate air index during this detection；
Wherein, n represents the air index, and t represents the big air dry temperature, pdRepresent the air dry air partial pressure
Power, pwRepresent the atmospheric water vapour partial pressure.
Alternatively, the processing module includes：
Acquiring unit, for obtaining the lower surface of the central point of the radar of the microwave interference detecting system to the bridge
The distance of place plane, and detect at least one times the microwave interference detecting system for obtaining radar central point to described
The radial distance between measuring point to be checked on bridge；
Computing unit, for according to formulaCalculate described to be detected
Point on the vertically direction of the bridge floor lower surface, parallel deviate in the distance of the reference plane of the bridge floor lower surface, as
The dynamic deflection of bridge during this detection；
Wherein, diThe dynamic deflection of bridge when representing that this detects, RiRepresent the radial distance that i ＆ lt detection is obtained,
Ri-1Represent the i-th -1 time and the radial distance for obtaining is detected, n represents the air index, h represents microwave interference detection system
The central point of the radar of system is to the distance of the lower surface place plane of the bridge.
Alternatively, the plane that the bridge lower surface is located parallel to the road surface on the bridge.
Alternatively, the reference plane are parallel to the bridge lower surface, and between the bridge lower surface away from
From being equal to which the distance between with road surface place plane；
The measuring point to be checked is located in the reference plane.
In the method and device that a kind of bridge dynamic deflection based on microwave interference that the present invention is provided is detected, the method examines
Considering microwave can be affected by environmental factorss such as temperature, humidity, atmospheric pressures during atmospheric propagation, to big air dry temperature,
Atmospheric water vapour partial pressure and air dry air partial pressure are detected respectively, and thereby determine that air index.According to thus
The air index of determination, and the geometry spy that the geometry site in detection process between microwave interferometer and bridge determines
Parameter is levied, calculates the dynamic deflection of bridge.The method avoids the difference due to season and time, temperature, humidity, atmospheric pressure
Impact of the environmental factorss such as power to ground microwave interference accuracy of detection, improves the accuracy of detection of bridge dynamic deflection.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for technology description is had to be briefly described, it should be apparent that, drawings in the following description are these
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is that the flow process of the method that the bridge dynamic deflection based on microwave interference that one embodiment of the invention is provided is detected is shown
It is intended to；
Fig. 2 be one embodiment of the invention provide the lower surface of bridge, measuring point to be checked, the showing of reference plane position
It is intended to；
Fig. 3 is the structural frames of the device that the bridge dynamic deflection based on microwave interference that one embodiment of the invention is provided is detected
Figure.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention is clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment for being obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is the schematic flow sheet of the method that the bridge dynamic deflection based on microwave interference that the present embodiment is provided is detected, ginseng
See Fig. 1, the method includes：
S1：Microwave interference detecting system is obtained to the geometrical characteristic parameter during bridge machinery to be detected, Yi Jiben
Big air dry temperature, atmospheric water vapour partial pressure and air dry air partial pressure during secondary detection；
S2：When calculating this detection according to the big air dry temperature, atmospheric water vapour partial pressure and air dry air partial pressure
Air index；
S3：According to the air index and the geometrical characteristic parameter, this is calculated using bridge dynamic deflection correction model
The dynamic deflection of the bridge of secondary detection；
Wherein, the geometrical characteristic parameter includes the central point of the radar of the microwave interference detecting system to the bridge
The distance of lower surface place plane and detect at least one times the microwave interference detecting system for obtaining radar central point to institute
State the radial distance between the measuring point to be checked on bridge.
It should be noted that the central point of the radar of microwave interference detecting system refers to launch electromagnetism on the antenna of radar
The launch point of ripple, or for receiving the geometric center of the take-up reel of electromagnetic wave on radar.
Measuring point to be checked is located between the road surface place plane on bridge and bridge lower surface place plane.
Dynamic deflection refers to measuring point to be checked and is offsetting up a prespecified ginseng perpendicular to the side of road surface place plane
Examine the offset distance of plane or reference point.A corresponding measuring point to be checked, detection every time can all obtain a dynamic deflection, therefore,
Test point can be treated carries out repeated detection, obtains the dynamic deflection of the meansigma methodss as the bridge of all dynamic deflections for obtaining, or
Person, it is also possible to choose multiple points on bridge as point to be monitored, while the dynamic deflection of these points to be monitored is detected, finally by
The algorithm of meansigma methodss obtains a numerical value, used as the dynamic deflection of the bridge.
In the present embodiment, it is a kind of positioned at Ku- ripple to interfere the signal of the work radar emission of detection due to terrestrial microwave
The electromagnetic wave of section, which can be affected by environmental factorss such as temperature, humidity, atmospheric pressures during atmospheric propagation, cause electricity
The propagation delay of magnetostatic wave signal and the bending of propagation path, reduce the precision that terrestrial microwave interferes detection.And in macrocyclic ferrum
In the bridge dynamic deflection detection process of road, due to season and the difference of time, the environmental factorss such as temperature, humidity, atmospheric pressure are over the ground
The impact of face microwave interference accuracy of detection will be increased further.Traditional dynamic deflection can be solved by the measuring method of the present embodiment
The detection range of detection technique is little, detecting distance is short, precision is low, the problems such as affected by environment.
The method that a kind of bridge dynamic deflection based on microwave interference that the present invention is provided is detected, the method considers microwave
Can be affected by environmental factorss such as temperature, humidity, atmospheric pressures during atmospheric propagation, big air dry temperature, atmospheric water are steamed
Edema caused by disorder of QI pressure and air dry air partial pressure are detected respectively, and thereby determine that air index.Big according to thereby determined that
Gas refractive index, and the geometrical characteristic parameter that the geometry site in detection process between microwave interferometer and bridge determines,
Calculate the dynamic deflection of bridge.The method avoids the difference due to season and time, the ring such as temperature, humidity, atmospheric pressure
Impact of the border factor to ground microwave interference accuracy of detection, improves the accuracy of detection of bridge dynamic deflection.
Further, step S2 includes：
According to formulaCalculate this detection
When the air index；
Wherein, n represents the air index, and t represents the big air dry temperature, pdRepresent the air dry air partial pressure
Power, pwRepresent the atmospheric water vapour partial pressure.
The present embodiment has considered big air dry temperature, atmospheric water vapour partial pressure and air dry air partial pressure and air has been rolled over
Penetrate the impact of rate.
Further, step S3 includes：
Obtain the microwave interference detecting system radar central point to the lower surface place plane of the bridge away from
From, and detect at least one times the microwave interference detecting system for obtaining radar central point to be checked on the bridge
Radial distance between measuring point；
According to formulaThe measuring point to be checked is calculated in the vertically bridge
On the direction of face lower surface, parallel deviate is in the distance of the reference plane of the bridge floor lower surface, institute when detecting as this
State the dynamic deflection of bridge；
Wherein, diThe dynamic deflection of bridge when representing that this detects, RiRepresent the radial distance that i ＆ lt detection is obtained,
Ri-1Represent the i-th -1 time and the radial distance for obtaining is detected, n represents the air index, h represents microwave interference detection system
The central point of the radar of system is to the distance of the lower surface place plane of the bridge.
It should be noted that reference plane are for characterizing the plane of measuring point degrees of offset to be checked, can be as institute in Fig. 2
Show in the middle of the road surface place plane 202 of bridge and bridge lower surface 201, and away from the two equidistant position, also may be used
To be other planes parallel with road surface place plane 202 or bridge lower surface 201, as long as can be used as to be checked with reference to characterizing
The offset distance of measuring point 204.Measuring point to be checked 204 is located on bridge under the road surface place plane 202 and bridge of bridge
Optional position between surface 201, for example, as shown in Fig. 2 measuring point to be checked 204 is located in reference plane 203.
Further, the plane that the bridge lower surface is located parallel to the road surface on the bridge.
Further, the reference plane are parallel to the bridge lower surface, and between the bridge lower surface
Distance is equal to which the distance between with road surface place plane；
The measuring point to be checked is located in the reference plane.
Referring to Fig. 2, the plane that the road surface on bridge is located is the plane that 202, bridge lower surface refers to be located with road surface
202 parallel planes 201, the upper surface of 201 gap bridge post of usual bridge lower surface or abutment.Reference plane 203 are parallel to bridge
Beam lower surface 201, and which is equal to the distance between with road surface place plane 202 with the distance between bridge lower surface 201.To be checked
Survey measuring point 204 to be located in reference plane 203.
A kind of air ginseng for the monitoring of terrestrial microwave interferometry long period railroad bridge dynamic deflection of the present invention
Number correcting method also has the advantages that：The atmospheric parameter correction empirical model of the optimum weighting mean coefficient of simplification has
±1×10-7Precision, much meet the required precision of ground microwave interference measurement bridge dynamic deflection monitoring atmospheric parameter correction.
The present invention simplify optimum weighting mean coefficient atmospheric parameter correction empirical model (in above example using big air dry temperature,
Atmospheric water vapour partial pressure and air dry air partial pressure calculate the process of air index), only consideration affects air index
Three key factors, reduce atmosphere data collection when difficulty, ensure certainty of measurement on the premise of, substantially increase ferrum
The efficiency of road bridge dynamic deflection monitoring.Consider the impact of air index and instrument cloth setting parameter, by the railway for building
Bridge dynamic deflection correction model, can eliminate terrestrial microwave interferometry significantly in Various Seasonal and the atmospheric parameter of different time
With the impact of instrument cloth setting parameter (geometrical characteristic parameter in above example), the precision of dynamic deflection monitoring is improved, is railway
The health status of bridge and safety analysiss and assessment provide accurate data and support.
Fig. 3 is the structured flowchart of the device 300 that the bridge dynamic deflection based on microwave interference that the present embodiment is provided is detected, ginseng
See Fig. 3, the device 300 that should detect based on the bridge dynamic deflection of microwave interference includes acquisition module 301, computing module 302 and place
Reason module 303；
Acquisition module 301, interferes detecting system to join the geometric properties during bridge machinery to be detected for obtaining
Number, and big air dry temperature during this detection, atmospheric water vapour partial pressure and air dry air partial pressure；
Computing module 302, based on according to the big air dry temperature, atmospheric water vapour partial pressure and air dry air partial pressure
Calculate air index during this detection；
Processing module 303, for according to the air index and the geometrical characteristic parameter, being changed using bridge dynamic deflection
Positive model calculates the dynamic deflection of the bridge of this detection；
Wherein, the geometrical characteristic parameter includes the central point of the radar of the microwave interference detecting system to the bridge
The distance of lower surface place plane and detect at least one times the microwave interference detecting system for obtaining radar central point
The radial distance between measuring point to be checked on the bridge.
The device 300 that the bridge dynamic deflection based on microwave interference that the present embodiment is provided is detected is suitable for above example
The method that the described bridge dynamic deflection based on microwave interference is detected, will not be described here.、
In the device 300 that the bridge dynamic deflection based on microwave interference that the present embodiment is provided is detected, it is contemplated that microwave is big
Can be affected by environmental factorss such as temperature, humidity, atmospheric pressures in gas communication process, the big air dry temperature of acquisition module 301, air
Steam partial pressure and air dry air partial pressure are detected, computing module 302 thereby determines that air index respectively.Process
Module 303 is according to the air index for thereby determining that, and the geometric position in detection process between microwave interferometer and bridge
The geometrical characteristic parameter that relation determines, calculates the dynamic deflection of bridge.The difference due to season and time is The method avoids,
Impact of the environmental factorss such as temperature, humidity, atmospheric pressure to ground microwave interference accuracy of detection, improves the inspection of bridge dynamic deflection
Survey precision.
Further, the computing module is used for according to formula
Calculate air index during this detection；
Wherein, n represents the air index, and t represents the big air dry temperature, pdRepresent the air dry air partial pressure
Power, pwRepresent the atmospheric water vapour partial pressure.
Further, the processing module includes：
Acquiring unit, for obtaining the lower surface of the central point of the radar of the microwave interference detecting system to the bridge
The distance of place plane, and detect at least one times the microwave interference detecting system for obtaining radar central point to described
The radial distance between measuring point to be checked on bridge；
Computing unit, for according to formulaCalculate described to be detected
Point on the vertically direction of the bridge floor lower surface, parallel deviate in the distance of the reference plane of the bridge floor lower surface, as
The dynamic deflection of bridge during this detection；
Wherein, diThe dynamic deflection of bridge when representing that this detects, RiRepresent the radial distance that i ＆ lt detection is obtained,
Ri-1Represent the i-th -1 time and the radial distance for obtaining is detected, n represents the air index, h represents microwave interference detection system
The central point of the radar of system is to the distance of the lower surface place plane of the bridge.
Further, the plane that the bridge lower surface is located parallel to the road surface on the bridge.
Further, the reference plane are parallel to the bridge lower surface, and between the bridge lower surface
Distance is equal to which the distance between with road surface place plane；
The measuring point to be checked is located in the reference plane.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of method that bridge dynamic deflection based on microwave interference is detected, it is characterised in that include：
S1：Microwave interference detecting system is obtained to the geometrical characteristic parameter during bridge machinery to be detected, and this inspection
Big air dry temperature, atmospheric water vapour partial pressure and air dry air partial pressure during survey；
S2：Calculated according to the big air dry temperature, atmospheric water vapour partial pressure and air dry air partial pressure big when this detects
Gas refractive index；
S3：According to the air index and the geometrical characteristic parameter, this inspection is calculated using bridge dynamic deflection correction model
The dynamic deflection of the bridge that surveys；
Wherein, the geometrical characteristic parameter includes the central point of the radar of the microwave interference detecting system to the bridge following table
The distance of face place plane and detect at least one times the microwave interference detecting system for obtaining radar central point to institute
State the radial distance between the measuring point to be checked on bridge.
2. the method according to claim 1, it is characterised in that step S2 includes：
According to formulaCalculate institute during this detection
State air index；
Wherein, n represents the air index, and t represents the big air dry temperature, pdRepresent the air dry air partial pressure, pwTable
Show the atmospheric water vapour partial pressure.
3. the method according to claim 2, it is characterised in that step S3 includes：
Obtain the microwave interference detecting system radar central point to the lower surface place plane of the bridge distance, with
And at least one times detect the microwave interference detecting system for obtaining radar central point to the measuring point to be checked on the bridge
Between radial distance；
According to formulaThe measuring point to be checked is calculated under the vertically bridge floor
On the direction on surface, parallel deviate is in the distance of the reference plane of the bridge floor lower surface, bridge when detecting as this
The dynamic deflection of beam；
Wherein, diThe dynamic deflection of bridge when representing that this detects, RiRepresent the radial distance that i ＆ lt detection is obtained, Ri-1
Represent the i-th -1 time and the radial distance for obtaining is detected, n represents the air index, and h represents the microwave interference detecting system
The central point of radar is to the distance of the lower surface place plane of the bridge.
4. the method according to claim 3, it is characterised in that the bridge lower surface is parallel to the road on the bridge
The plane that face is located.
5. the method according to claim 4, it is characterised in that the reference plane parallel to the bridge lower surface,
And with the bridge lower surface the distance between be equal to which the distance between with road surface place plane；
The measuring point to be checked is located in the reference plane.
6. the device that a kind of bridge dynamic deflection based on microwave interference is detected, it is characterised in that include：
Acquisition module, interferes detecting system to the geometrical characteristic parameter during bridge machinery to be detected for obtaining, and
Big air dry temperature, atmospheric water vapour partial pressure and air dry air partial pressure during this detection；
Computing module, for calculating this according to the big air dry temperature, atmospheric water vapour partial pressure and air dry air partial pressure
Air index during detection；
Processing module, for according to the air index and the geometrical characteristic parameter, using bridge dynamic deflection correction model
Calculate the dynamic deflection of the bridge of this detection；
Wherein, the geometrical characteristic parameter includes the central point of the radar of the microwave interference detecting system to the bridge following table
The distance of face place plane and detect at least one times the microwave interference detecting system for obtaining radar central point to institute
State the radial distance between the measuring point to be checked on bridge.
7. the device according to claim 6, it is characterised in that the computing module is used for according to formulaCalculate atmospheric refraction during this detection
Rate；
Wherein, n represents the air index, and t represents the big air dry temperature, pdRepresent the air dry air partial pressure, pwTable
Show the atmospheric water vapour partial pressure.
8. the device according to claim 7, it is characterised in that the processing module includes：
Acquiring unit, is located to the lower surface of the bridge for obtaining the central point of the radar of the microwave interference detecting system
The distance of plane, and detect at least one times the microwave interference detecting system for obtaining radar central point to the bridge
On measuring point to be checked between radial distance；
Computing unit, for according to formulaCalculate the measuring point to be checked hanging down
Directly on the direction of the bridge floor lower surface, parallel deviate is examined as this in the distance of the reference plane of the bridge floor lower surface
The dynamic deflection of bridge during survey；
Wherein, diThe dynamic deflection of bridge when representing that this detects, RiRepresent the radial distance that i ＆ lt detection is obtained, Ri-1
Represent the i-th -1 time and the radial distance for obtaining is detected, n represents the air index, and h represents the microwave interference detecting system
The central point of radar is to the distance of the lower surface place plane of the bridge.
9. the device according to claim 8, it is characterised in that the bridge lower surface is parallel to the road on the bridge
The plane that face is located.
10. the device according to claim 9, it is characterised in that the reference plane parallel to the bridge lower surface,
And with the bridge lower surface the distance between be equal to which the distance between with road surface place plane；
The measuring point to be checked is located in the reference plane.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271095A (en) * | 2017-07-24 | 2017-10-20 | 湖南镭氪信息科技有限公司 | A kind of Suo Li remote sensing survey methods based on microwave interference |
| CN107687924A (en) * | 2017-08-28 | 2018-02-13 | 广州大学 | The safe early warning method and system of a kind of bridge |
| CN113701968A (en) * | 2021-07-12 | 2021-11-26 | 北京建筑大学 | Bridge dynamic deflection monitoring system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001091649A (en) * | 1999-09-20 | 2001-04-06 | Mitsubishi Electric Corp | Ground control point device for synthetic aperture radar image precise geometrical correction |
| CN103983220A (en) * | 2014-04-24 | 2014-08-13 | 东南大学 | System and method for continuously monitoring bridge deformation through foundation radar |
| CN105136073A (en) * | 2015-08-14 | 2015-12-09 | 昆明理工大学 | Meteorologic correction model in slope deformation monitoring |
| CN105182339A (en) * | 2015-09-25 | 2015-12-23 | 昆明理工大学 | Method for correcting environmental influences at slope deformation monitoring on the basis of corner reflector |
| CN105467390A (en) * | 2016-01-12 | 2016-04-06 | 重庆大学 | Bridge deformation close range monitoring method based on foundation InSAR |
-
2016
- 2016-09-29 CN CN201610866252.1A patent/CN106441749B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001091649A (en) * | 1999-09-20 | 2001-04-06 | Mitsubishi Electric Corp | Ground control point device for synthetic aperture radar image precise geometrical correction |
| CN103983220A (en) * | 2014-04-24 | 2014-08-13 | 东南大学 | System and method for continuously monitoring bridge deformation through foundation radar |
| CN105136073A (en) * | 2015-08-14 | 2015-12-09 | 昆明理工大学 | Meteorologic correction model in slope deformation monitoring |
| CN105182339A (en) * | 2015-09-25 | 2015-12-23 | 昆明理工大学 | Method for correcting environmental influences at slope deformation monitoring on the basis of corner reflector |
| CN105467390A (en) * | 2016-01-12 | 2016-04-06 | 重庆大学 | Bridge deformation close range monitoring method based on foundation InSAR |
Non-Patent Citations (4)
| Title |
|---|
| 刘德煜: "GPS与微波干涉测量在桥梁动挠度测量中的对比分析", 《桥梁建设》 * |
| 华远峰等: "地面雷达静态微变形测量环境影像改正方法研究", 《东南大学学报》 * |
| 徐亚明等: "地基干涉雷达IBIS-S桥梁动态形变监测研究", 《武汉大学学报.信息科学版》 * |
| 金旭辉等: "微波干涉测量技术及其在桥梁变形观测中的应用", 《现代测绘》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271095A (en) * | 2017-07-24 | 2017-10-20 | 湖南镭氪信息科技有限公司 | A kind of Suo Li remote sensing survey methods based on microwave interference |
| CN107687924A (en) * | 2017-08-28 | 2018-02-13 | 广州大学 | The safe early warning method and system of a kind of bridge |
| CN107687924B (en) * | 2017-08-28 | 2019-05-03 | 广州大学 | A kind of safe early warning method and system of bridge |
| CN113701968A (en) * | 2021-07-12 | 2021-11-26 | 北京建筑大学 | Bridge dynamic deflection monitoring system |
| CN113701968B (en) * | 2021-07-12 | 2023-10-13 | 北京建筑大学 | Bridge dynamic deflection monitoring system |
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