CN110455489A - A kind of flow tunnel testing device measuring bridge subsection model of vibration Pressures - Google Patents
A kind of flow tunnel testing device measuring bridge subsection model of vibration Pressures Download PDFInfo
- Publication number
- CN110455489A CN110455489A CN201910732487.5A CN201910732487A CN110455489A CN 110455489 A CN110455489 A CN 110455489A CN 201910732487 A CN201910732487 A CN 201910732487A CN 110455489 A CN110455489 A CN 110455489A
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- camera
- model
- vibration
- ccd camera
- pressure sensitive
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Classifications
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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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
Abstract
The invention discloses a kind of flow tunnel testing devices for measuring bridge subsection model of vibration Pressures, including resilient suspension lumbar spondylolysis device part, pressure sensitive paint technology segment and synchronous vibration device part.The resilient suspension lumbar spondylolysis device part includes test model, suspension connecting rod, pendulum spring and device for measuring force；The pressure sensitive paint technology segment includes computer, CCD camera, filter, light emitting source and pressure sensitive paint；Synchronous vibration device part includes camera foot stool, foot prop fixed frame and camera Quick-mounting board.The synchronous vibration that the present invention passes through the test model of experimental rig in CCD camera in synchronous vibration device realization pressure sensitive paint technology and resilient suspension Segment Model, the opposing stationary of CCD camera and test model is realized, also just makes pressure sensitive paint technical application on model of vibration.
Description
Technical field
The invention belongs to accurate measuring technique field, in particular to a kind of measurement bridge subsection model of vibration Pressures
Flow tunnel testing device.
Background technique
In bridge construction field, the design and checking computations of large bridge are required in wind-tunnel to its test model surface
Pressure measures, further to detect its wind resistance in a natural environment, so that the design to bridge optimizes
Processing.In wind tunnel test, surveys pressure and vibration measuring is all common research means.The means of vibration measuring at present have been relatively mature, and one
As measured using rigidity or the method for resilient suspension lumbar spondylolysis.And pressure testing method is dug out very on test model surface
More measured holes, and measuring pressure pipe is embedded in measured hole, the channel that the pressure signal spread out of from wind-tunnel passes through air circulation
It is transmitted to the computer outside wind-tunnel with cable, to carry out data analysis and process.Since the measured hole of chisel is discontinuous, and
And have a certain size and spacing, therefore traditional test pressure method can only measure the surface pressing of several discrete points,
And inconvenience of layouting at model corner.And it is herein flow separation and attached more complicated region again, it should be the emphasis for surveying pressure.But
Currently used pressure means of surveying can not effectively measure the Pressures in these regions.
Summary of the invention
Goal of the invention: in view of the foregoing drawbacks, the present invention provides a kind of wind for measuring bridge subsection model of vibration Pressures
Hole experimental rig, using the experimental rig of pressure sensitive paint technology measurement bridge vibration model surface wind pressure, it can be achieved that in wind tunnel test
The synchro measure of wind pressure and vibration.
Technical solution: the present invention proposes kind of a flow tunnel testing device for measurement bridge subsection model of vibration Pressures, including
A kind of flow tunnel testing device measuring bridge subsection model of vibration Pressures, including wind tunnel laboratory, elastic suspended
Hang lumbar spondylolysis device, pressure sensitive paint device and synchronous vibration device；The pressure sensitive paint device and synchronous vibration device are all provided with
It sets on resilient suspension lumbar spondylolysis device；The resilient suspension lumbar spondylolysis device of stating includes test model, hangs
Hang connecting rod, pendulum spring and device for measuring force；The pressure sensitive paint device include computer, CCD camera, filter, light emitting source and
Pressure sensitive paint；The synchronous vibration device includes camera foot stool, foot prop fixing clamp and camera Quick-mounting board；The experimental model surface applies
There is pressure sensitive paint, the experimental model two sides are respectively arranged with suspension connecting rod, are provided with pendulum spring in the suspension connecting rod,
The pendulum spring end is provided with device for measuring force, is provided with camera foot stool, the camera foot stool in the middle part of the suspension connecting rod
End is provided with CCD camera, and illuminating source is provided in the wind tunnel experiment chamber interior walls, and the computer is electrically connected with CCD camera
It connects.
Further, the camera foot stool is connect by foot prop fixing clamp with suspension connecting rod.
Further, the camera foot stool end is connect by camera Quick-mounting board with CCD camera, is set in the CCD camera
It is equipped with filter.
Further, the camera foot stool includes upper camera foot stool and lower camera foot stool, and the CCD camera includes upper CCD
Camera and lower CCD camera, the upper camera foot stool and lower camera foot stool are symmetrical arranged relative to suspension connecting rod, the upper CCD
Camera and lower CCD camera are symmetrical arranged relative to suspension connecting rod.
Further, the both ends of the every suspension connecting rod are symmetrically arranged with two pendulum springs up and down, described each
The end of spring is provided with device for measuring force.
Further, rubber sheet gasket is provided between the foot prop fixing clamp and suspension connecting rod.
Further, the illuminating source includes upper illuminating source and lower illuminating source, and the upper illuminating source setting exists
At the top of wind tunnel laboratory, the lower illuminating source is arranged in wind tunnel laboratory bottom.
Further, the camera foot stool is made of carbon fibre material, single weight be 0.8-1.5kg, diameter 30mm,
Apart from experimental model 40-80cm.
Further, the synchronous vibration device is made of carbon fibre material, total weight 3-6kg.
In order to make up the deficiency of conventional measurement pressure means, pressure sensitive paint technology can be used.Pressure sensitive paint technology be it is a kind of it is novel,
Contactless, not destroy test model wind tunnel test pressure method.Pressure sensitive paint by luminescence probe molecule and oxygen permeability compared with
The functional material of high host material composition.Its test method are as follows: the pressure sensitive paint prepared is sprayed on test model surface, by
Systems for optical inspection, with special CCD camera collecting test data, after cameras record correlation test image data, first by image
It is saved in the memory card built in it, then memory card internal data is read by computer, image just obtains after computer is handled
The complete distribution map of one width covering pressure.
Pressure and vibration measuring are surveyed as means common in wind tunnel test, if can obtain the synchronous progress of the two more fully
Information.Since pressure sensitive paint technology needs acquired image carrying out split to obtain the variation of Pressures, if model itself
It is in vibration, it is necessary to which the location information that model is extraly handled from the image taken will be greatly reduced test in this way
Efficiency, and will affect test accuracy and result.Though cannot be answered well so the technology can measure complete pressure-plotting
With on model of vibration.Therefore, it is necessary to a kind of auxiliary devices of correlation test, realize the synchro measure of wind pressure and vibration.
The present invention by adopting the above technical scheme, has the advantages that
1. realizing the wind pressure measurement on model of vibration full surface in segment in wind tunnel test, complete, accurate testing element is obtained
Surface pressing figure；
2. the step of simplifying wind tunnel test, saving vibrating object image procossing improves test efficiency.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is side view of the invention；
Fig. 3 is main view of the invention；
Fig. 4 is top view of the invention；
Fig. 5 is the three-dimensional figure of foot prop fixing clamp in Fig. 1.
Specific embodiment
Combined with specific embodiments below, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate the present invention
Rather than limit the scope of the invention, after the present invention has been read, those skilled in the art are to various equivalences of the invention
The modification of form falls within the application range as defined in the appended claims.
As shown in Figs. 1-5, a kind of flow tunnel testing device based on pressure sensitive paint technology measurement segment model of vibration Pressures,
Including test model 1, upper camera foot stool 2, lower camera foot stool 3, foot prop fixing clamp 4, camera Quick-mounting board 5, upper CCD camera 6, under
CCD camera 7, filter 8, upper illuminating source 9, lower illuminating source 10, suspension connecting rod 11, pendulum spring 12, wind tunnel laboratory
13, rubber sheet gasket 14, computer 15；
The test model 1 is suspended in connecting rod 11, can be carried out vertical motion by the control of pendulum spring 12 and torsion is shaken
It is dynamic.There is device for measuring force in 12 end of pendulum spring, and the vibrational state of test model 1 can be calculated by dynamometry；On test model 1
Pressure sensitive paint need to be filled according to test requirements document, specific fluorescence can be generated under light source, test model is collected by CCD camera
1 image, and be transferred in computer 15 and handled through the memory card built in camera, complete the same pacing of wind pressure and vibration
Amount；
The upper camera foot stool 2, lower camera foot stool 3 are fixed in suspension connecting rod 11 by foot prop fixing clamp 4, and passed through
Camera Quick-mounting board 5 fixes CCD camera, realizes the synchronous vibration of camera and test model 1；
The foot prop fixing clamp 4 is located at the bottom end of camera foot stool, and effect is that camera foot stool is fixed on to suspension connecting rod
On 11；
The camera Quick-mounting board 5 be the attachment device between CCD camera and foot prop, it can be achieved that the Fast Installation of CCD camera and
Disassembly, and guarantee stabilization of the camera on foot prop；
The upper CCD camera 6, lower CCD camera 7 respectively have 2, are connected to upper camera foot stool 2 by camera Quick-mounting board 5
On lower camera foot stool 3.Upper and lower CCD camera is located above and below test model 1, for shooting the upper table of model
Face and lower surface, and image data is transferred in computer 15 and is handled, advantageously form complete surface pressing figure；
Before the filter 8 is located at upper CCD camera 6 and lower 7 camera lens of CCD camera, 4 are shared.It is that filtering is pressure-sensitive that it, which is acted on,
The light other than fluorescence is painted, prevents other light sources from influencing Pressure testing；
The upper illuminating source 9 and lower illuminating source 10 are located at the top and bottom of wind tunnel laboratory 13, for shining
The upper and lower part of bright test model 1.It is light necessary to issuing pressure-sensitive lacquer test that it, which is acted on, and it is specific to allow pressure sensitive paint to return
Fluorescence.Different types of light source need to be selected according to the type of pressure sensitive paint；
The suspension connecting rod 11 shares two groups, is located at the two sides of test model 1；The pendulum spring 12 shares 8
Root, the every side in 1 both ends of test model 4.The device for measuring force of spring end can recorde the stress variation of test model 1；
The wind tunnel laboratory 13 is the place that wind tunnel test carries out, and all devices mentioned in this patent all need to be in wind
It is tested in hole laboratory 13；
The rubber sheet gasket 14 is located between foot prop fixing clamp 4 and suspension connecting rod 11, and the purpose is to increase foot prop to fix
Friction between frame 4 and suspension connecting rod 11, prevents camera foot stool from sliding during the test because vibrating with test model
It moves.
Embodiments of the present invention are described in detail in conjunction with attached drawing above, but the present invention is not limited to described reality
Apply mode.For those of ordinary skill in the art, in the range of the principle of the present invention and technical idea, to these implementations
Mode carries out a variety of variations of embodiment progress, modification, replacement and deformation and still falls in protection scope of the present invention.
Claims (9)
1. a kind of flow tunnel testing device for measuring bridge subsection model of vibration Pressures, which is characterized in that including wind tunnel experiment
Room, resilient suspension lumbar spondylolysis device, pressure sensitive paint device and synchronous vibration device；The pressure sensitive paint device and synchronous vibration
Device is arranged on resilient suspension lumbar spondylolysis device；The resilient suspension lumbar spondylolysis device of stating includes test
Model, suspension connecting rod, pendulum spring and device for measuring force；The pressure sensitive paint device includes computer, CCD camera, filter, hair
Light source and pressure sensitive paint；The synchronous vibration device includes camera foot stool, foot prop fixing clamp and camera Quick-mounting board；The experimental model
Surface is coated with pressure sensitive paint, and the experimental model two sides are respectively arranged with suspension connecting rod, are provided in the suspension connecting rod outstanding
Spring is hung, the pendulum spring end is provided with device for measuring force, is provided with camera foot stool, the phase in the middle part of the suspension connecting rod
Under-chassis frame end is provided with CCD camera, and illuminating source, the computer and CCD phase are provided in the wind tunnel experiment chamber interior walls
Mechatronics.
2. a kind of flow tunnel testing device for measuring bridge subsection model of vibration Pressures according to claim 1, special
Sign is that the camera foot stool is connect by foot prop fixing clamp with suspension connecting rod.
3. a kind of flow tunnel testing device for measuring bridge subsection model of vibration Pressures according to claim 1, special
Sign is that the camera foot stool end is connect by camera Quick-mounting board with CCD camera, is provided with filter in the CCD camera.
4. a kind of flow tunnel testing device for measuring bridge subsection model of vibration Pressures according to claim 1, special
Sign is that the camera foot stool includes upper camera foot stool and lower camera foot stool, and the CCD camera includes upper CCD camera and lower CCD
Camera, the upper camera foot stool and lower camera foot stool are symmetrical arranged relative to suspension connecting rod, the upper CCD camera and lower CCD
Camera is symmetrical arranged relative to suspension connecting rod.
5. a kind of flow tunnel testing device for measuring bridge subsection model of vibration Pressures according to claim 1, special
Sign is that the both ends of the every suspension connecting rod are symmetrically arranged with two pendulum springs up and down, the end of each spring
It is provided with device for measuring force.
6. a kind of flow tunnel testing device for measuring bridge subsection model of vibration Pressures according to claim 1, special
Sign is, is provided with rubber sheet gasket between the foot prop fixing clamp and suspension connecting rod.
7. a kind of flow tunnel testing device for measuring bridge subsection model of vibration Pressures according to claim 1, special
Sign is that the illuminating source includes upper illuminating source and lower illuminating source, and the upper illuminating source is arranged in wind tunnel laboratory
Top, the lower illuminating source are arranged in wind tunnel laboratory bottom.
8. a kind of flow tunnel testing device for measuring bridge subsection model of vibration Pressures according to claim 1, special
Sign is that the camera foot stool is made of carbon fibre material, and single weight is 0.8-1.5kg, diameter 30mm, distance experiment mould
Type 40-80cm.
9. a kind of flow tunnel testing device for measuring bridge subsection model of vibration Pressures according to claim 1, special
Sign is that the synchronous vibration device is made of carbon fibre material, total weight 3-6kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732487.5A CN110455489B (en) | 2019-08-09 | 2019-08-09 | Wind tunnel test device for measuring surface wind pressure of bridge section vibration model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732487.5A CN110455489B (en) | 2019-08-09 | 2019-08-09 | Wind tunnel test device for measuring surface wind pressure of bridge section vibration model |
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| CN110455489A true CN110455489A (en) | 2019-11-15 |
| CN110455489B CN110455489B (en) | 2021-03-19 |
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| CN201910732487.5A Active CN110455489B (en) | 2019-08-09 | 2019-08-09 | Wind tunnel test device for measuring surface wind pressure of bridge section vibration model |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112268684A (en) * | 2020-12-14 | 2021-01-26 | 中国空气动力研究与发展中心低速空气动力研究所 | Variable azimuth angle surface pressure measuring system and method for low-speed wind tunnel rotor model |
| CN113465866A (en) * | 2021-07-09 | 2021-10-01 | 西南交通大学 | Test device with static and dynamic test functions of bridge section model |
| CN114323543A (en) * | 2022-03-10 | 2022-04-12 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for improving pressure-sensitive paint test efficiency |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268684A (en) * | 2020-12-14 | 2021-01-26 | 中国空气动力研究与发展中心低速空气动力研究所 | Variable azimuth angle surface pressure measuring system and method for low-speed wind tunnel rotor model |
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| CN113465866A (en) * | 2021-07-09 | 2021-10-01 | 西南交通大学 | Test device with static and dynamic test functions of bridge section model |
| CN113465866B (en) * | 2021-07-09 | 2022-03-08 | 西南交通大学 | Test device with static and dynamic test functions of bridge section model |
| CN114323543A (en) * | 2022-03-10 | 2022-04-12 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for improving pressure-sensitive paint test efficiency |
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