CN208254753U - A kind of device measuring bridge dynamic deflection - Google Patents
A kind of device measuring bridge dynamic deflection Download PDFInfo
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- CN208254753U CN208254753U CN201820925588.5U CN201820925588U CN208254753U CN 208254753 U CN208254753 U CN 208254753U CN 201820925588 U CN201820925588 U CN 201820925588U CN 208254753 U CN208254753 U CN 208254753U
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- reflection component
- laser
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- receiver board
- bridge
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Abstract
The utility model discloses a kind of devices for measuring bridge dynamic deflection, belong to bridge survey technical field, including laser, reflection component, receiver board and high speed camera, the reflection component is arranged under the beam of amount of deflection bridge to be measured and the incident direction of reflection component is parallel with reflection direction, the laser is far from reflection component and towards reflection component with fixed direction irradiation, the receiver board is located at the side of laser and relative laser device is fixed, reflection laser beam of the receiver board to receive reflection component, the hot spot receiving plane of the receiver board is in the imaging region of high speed camera.When the utility model loading test, bridge generates displacement, reflection component is and then moved, since laser is fixed, the hot spot of receiver board is reflexed to relative to being deviated before bridge displacement by reflection component, high-speed capture machine takes the image of entire migration process, and the real-time dynamic deflection of bridge is calculated by comparing.
Description
Technical field
The utility model relates to bridge monitoring technical fields, more particularly to a kind of device for measuring bridge dynamic deflection.
Background technique
The amount of deflection of bridge is the most important index of long-span bridges lifetime, and periodic observation amount of deflection is to ensure bridge structure
The most effective precautionary measures of safety.In the dynamic test of present bridge, the measurement of amount of deflection is generally by setting up bracket riding upon
Displacement meter measure, but most of bridge is limited to the depth of water, span, and the conditions such as navigation can not set up bracket.This bridge
Beam is generally measured with acceleration transducer indirectly, but measuring result error is larger.
Utility model content
To solve the above-mentioned problems, the utility model provides a kind of device for measuring bridge dynamic deflection, and measurement is accurate.
The technical scheme adopted by the utility model is
A kind of device measuring bridge dynamic deflection, including laser, reflection component, receiver board and high speed camera, institute
State that reflection component is arranged under the beam of amount of deflection bridge to be measured and the incident direction of reflection component is parallel with reflection direction, the laser
For device far from reflection component and towards reflection component with fixed direction irradiation, the receiver board is located at the side of laser and relatively
Laser is fixed, reflection laser beam of the receiver board to receive reflection component, and the hot spot receiving plane of the receiver board is in high speed
In the imaging region of camera.
The reflection component is pyramid total reflection prism as a further improvement of the utility model,.
The laser and receiver board are each attached in a fixation member as a further improvement of the utility model, institute
High speed camera is stated between receiver board and reflection component and close to fixation member, high speed camera signal is connected with calculating
Machine.
The reflection component is fixed in open-ended outer housing as a further improvement of the utility model, reflection
Expose from opening at the reflection position of component.
The outer housing is connect with amount of deflection bridge to be measured by flexural pivot as a further improvement of the utility model,.
The hot spot receiving plane of the receiver board is furnished with lighting source, illumination light as a further improvement of the utility model,
The color in source and the color of laser are not interfere with each other.
The beneficial effects of the utility model are: bridge generates displacement when the utility model loading test, reflection component is followed
Moved, due to laser be it is fixed, the hot spot of receiver board is reflexed to relative to bridge displacement by reflection component
Before deviated, high-speed capture machine takes the image of entire migration process, pass through compare calculate bridge real-time dynamic deflection.
Detailed description of the invention
The present invention will be further described with embodiment with reference to the accompanying drawing.
Fig. 1 is the schematic diagram of the utility model；
Dynamic deflection measuring principle figure when Fig. 2 is load test.
Specific embodiment
The device of measurement bridge dynamic deflection as shown in Figure 1, including laser 1, reflection component 2, receiver board 3 and high speed
Camera 4.Reflection component 2 is arranged under the beam of amount of deflection bridge to be measured at the far end, the incident direction and reflection side of the reflection component 2
To parallel, but not instead of backtracking, offset by one section of lesser distance.The laser 1 is arranged far from reflection component 2
And it is located at proximal end, in general it is located at the facility of a certain fixation, in equipment.The light beam of laser 1 is irradiated towards reflecting part
Part 2, laser 1 is fixed, therefore the transmitting direction of light beam is also fixed.Above-mentioned receiver board 3 is located at the one of laser 1
Side and the fixation of relative laser device 1, receiver board 3 is to receive the reflection laser beam of reflection component 2 and be formed on the surface of receiver board 3
The hot spot receiving plane of hot spot, receiver board 3 is in the imaging region of high speed camera 4.
So, the principle of embodiment device is as follows:
With reference to Fig. 1, the laser 1 of position and launch angle fixation issues light beam, and light beam is incident on the reflection in location A
On component 2, reflection component 2 is emitted back towards light beam according to certain offset in parallel, and the light beam after retroeflection is emitted back towards the position B of receiver board 3
It sets, high speed camera 4 monitors the hot spot on receiver board 3 in real time.When loading test, as shown in Fig. 2, bridge generates position
It moves, reflection component 2 is and then moved, and is moved to the position A ' from location A, since laser 1 is motionless, is reflexed to receiver board
3 facula position shifts, and is offset to the position B ' from B location.The image of entire migration process under video camera high-speed capture leads to
Cross the real-time dynamic deflection for comparing and calculating bridge.
It is further preferred that reflection component 2 is pyramid total reflection prism, it in this way can be to incident angle without limitation.
It is further preferred that the laser 1 and receiver board 3 is each attached in fixation member (not shown) together, than
A cabinet in this way, the fixation member facilitate whole carrying for deciding the position of the two.Above-mentioned high-speed camera
First 4 between receiver board 3 and reflection component 2 and close to fixation member, and 4 signal of high speed camera is connected with computer, by counting
It is more efficient for artificial measuring and calculating that the comparison of calculation machine calculates dynamic deflection according to offset.
It is further preferred that above-mentioned reflection component 2 is fixed in outer housing open-ended and (not shown), reflecting part
Expose from opening at the reflection position of part 2.The carrier that outer housing had both been used as reflection component 2 and bridge to assemble can also wrap up anti-
Component 2 is penetrated to protect to it.
It is further preferred that outer housing is connect with amount of deflection bridge to be measured by flexural pivot, outer housing is can to drive reflecting part
What part 2 rotated, not needing mobile laser 1 in preliminary installation conveniently can also make the light beam of laser 1 drop down onto reflection just
On component 2.
It is further preferred that in order to enable can also make in the case where night or insufficient light high speed camera 4 at
As clear reliable, the hot spot receiving plane of receiver board 3 is furnished with lighting source, and the color of lighting source and the color of laser are not done mutually
It disturbs, for example lighting source is white light, laser is feux rouges.
The above is the utility model preferred embodiment, is not constituted to scope of protection of the utility model
Limitation.
Claims (6)
1. a kind of device for measuring bridge dynamic deflection, it is characterised in that: including laser (1), reflection component (2), receiver board
(3) and high speed camera (4), the reflection component (2) is arranged under the beam of amount of deflection bridge to be measured and the incidence of reflection component (2)
Direction is parallel with reflection direction, and the laser (1) is far from reflection component (2) and towards reflection component (2) with fixed direction
Irradiation, the receiver board (3) is located at the side of laser (1) and relative laser device (1) is fixed, and receiver board (3) is anti-to receive
The reflection laser beam of component (2) is penetrated, the hot spot receiving plane of the receiver board (3) is in the imaging region of high speed camera (4).
2. the device of measurement bridge dynamic deflection according to claim 1, it is characterised in that: the reflection component (2) is
Pyramid total reflection prism.
3. it is according to claim 1 or 2 measurement bridge dynamic deflection device, it is characterised in that: the laser (1) and
Receiver board (3) is each attached in a fixation member, and the high speed camera (4) is located between receiver board (3) and reflection component (2)
And close to fixation member, high speed camera (4) signal is connected with computer.
4. the device of measurement bridge dynamic deflection according to claim 1 or 2, it is characterised in that: the reflection component (2)
It is fixed in open-ended outer housing, the reflection position of reflection component (2) is exposed from opening.
5. the device of measurement bridge dynamic deflection according to claim 4, it is characterised in that: the outer housing is scratched with to be measured
Bridge is spent to connect by flexural pivot.
6. the device of measurement bridge dynamic deflection according to claim 1 or 2, it is characterised in that: the receiver board (3)
Hot spot receiving plane is furnished with lighting source, and the color of lighting source and the color of laser are not interfere with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820925588.5U CN208254753U (en) | 2018-06-14 | 2018-06-14 | A kind of device measuring bridge dynamic deflection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820925588.5U CN208254753U (en) | 2018-06-14 | 2018-06-14 | A kind of device measuring bridge dynamic deflection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208254753U true CN208254753U (en) | 2018-12-18 |
Family
ID=64654598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820925588.5U Active CN208254753U (en) | 2018-06-14 | 2018-06-14 | A kind of device measuring bridge dynamic deflection |
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| CN (1) | CN208254753U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900225A (en) * | 2019-04-24 | 2019-06-18 | 吉林大学 | A kind of superhigh precision angle measurement system |
| CN110057303A (en) * | 2019-05-22 | 2019-07-26 | 广东工业大学 | A kind of linear displacement measurement device |
| CN110132160A (en) * | 2019-06-19 | 2019-08-16 | 厦门大学 | A kind of Measurement Methods Of Bridge Deflection using optical fiber source |
| CN110332908A (en) * | 2019-07-20 | 2019-10-15 | 大连理工大学 | A kind of high-precision laser is reflective to survey the device and method that inclines |
| CN111536956A (en) * | 2020-05-18 | 2020-08-14 | 中铁隧道局集团有限公司 | System and method for remotely measuring building displacement under complex meteorological condition |
| WO2021000965A1 (en) * | 2019-12-03 | 2021-01-07 | 中铁九局集团有限公司 | Structure for determining central position of pier and central position determination method |
| CN112964438A (en) * | 2021-03-16 | 2021-06-15 | 江苏信息职业技术学院 | Bridge dynamic deflection online monitoring method and system |
| CN114577118A (en) * | 2022-02-16 | 2022-06-03 | 江苏中关村嘉拓新能源设备有限公司 | High-temperature-resistant wide-range offset sensor and calibration method |
-
2018
- 2018-06-14 CN CN201820925588.5U patent/CN208254753U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900225A (en) * | 2019-04-24 | 2019-06-18 | 吉林大学 | A kind of superhigh precision angle measurement system |
| CN110057303A (en) * | 2019-05-22 | 2019-07-26 | 广东工业大学 | A kind of linear displacement measurement device |
| CN110057303B (en) * | 2019-05-22 | 2021-05-11 | 广东工业大学 | Linear displacement measuring device |
| CN110132160A (en) * | 2019-06-19 | 2019-08-16 | 厦门大学 | A kind of Measurement Methods Of Bridge Deflection using optical fiber source |
| CN110132160B (en) * | 2019-06-19 | 2024-03-29 | 厦门大学 | Bridge deflection measuring method adopting optical fiber light source |
| CN110332908A (en) * | 2019-07-20 | 2019-10-15 | 大连理工大学 | A kind of high-precision laser is reflective to survey the device and method that inclines |
| WO2021000965A1 (en) * | 2019-12-03 | 2021-01-07 | 中铁九局集团有限公司 | Structure for determining central position of pier and central position determination method |
| CN111536956A (en) * | 2020-05-18 | 2020-08-14 | 中铁隧道局集团有限公司 | System and method for remotely measuring building displacement under complex meteorological condition |
| CN112964438A (en) * | 2021-03-16 | 2021-06-15 | 江苏信息职业技术学院 | Bridge dynamic deflection online monitoring method and system |
| CN114577118A (en) * | 2022-02-16 | 2022-06-03 | 江苏中关村嘉拓新能源设备有限公司 | High-temperature-resistant wide-range offset sensor and calibration method |
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