CN102853989B - Swing aeroelastic model and shock-test wind tunnel test method thereby - Google Patents
Swing aeroelastic model and shock-test wind tunnel test method thereby Download PDFInfo
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- CN102853989B CN102853989B CN201210327963.3A CN201210327963A CN102853989B CN 102853989 B CN102853989 B CN 102853989B CN 201210327963 A CN201210327963 A CN 201210327963A CN 102853989 B CN102853989 B CN 102853989B
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Abstract
Description
Technical field
The present invention relates to a kind of building engineering structure wind force proofing design experimental technique, specifically, particularly relate to a kind of the pendulum-type air spring pole and the air spring pole survey shake wind tunnel test methods that carry out wind tunnel test.
Background technology
In recent years, along with the increase of building height and the utilization of light-weight high-strength material, make the wind vibration response of skyscraper more and more significant, therefore very high to the requirement of its structural wind resistance design, must its aeroelasticity effect of accurate assurance.
Electric transmission pole tower is as a kind of skyscraper, and be typical wind sensitive structure, under wind action, the accident of the broken string of falling tower happens occasionally.And as the important carrier of electric power transfer, the security of electric transmission pole tower is the important leverage of China's sound and rapid economic growth, and therefore excellent wind force proofing design is extremely important to electric transmission pole tower mechanism.
Wind tunnel test is the important tests means of structure design of test quality, and current wind tunnel test methods comprises rigid model dynamometer check and air spring pole vibration measuring wind tunnel test.Air spring pole comprises again pendulum-type air spring pole and full air spring pole, wherein full air spring pole due to designing and making very complicated, take time and effort, should use very complicated, use few; And pendulum-type air spring pole is relatively simple owing to making, be that current a kind of widely used air spring pole is arranged and method for making.But existing pendulum-type air spring pole by structure X axis, Y-axis and torsion to vibration all adopt same layer spring to control, due to the discontinuity between spring, its each axial vibration intercouples, cannot the accuracy of warranty test.
Summary of the invention
Based on this, the invention reside in and overcome in prior art, each axial vibration of pendulum-type air spring pole intercouples, cannot the defect of warranty test accuracy, and the object of this invention is to provide a kind of pendulum-type air spring pole, this model can obtain test findings more accurately.Another object of the present invention is to provide a kind of air spring pole and surveys shake wind tunnel test methods, and the method makes each axial vibration mutually not be coupled, and can obtain test findings more accurately.
For realizing the object of the invention, provide following technical scheme:
The invention provides a kind of pendulum-type air spring pole, its technical scheme is as follows: this pendulum-type air spring pole comprises skyscraper rigid model, rigidity pole, support; Described skyscraper rigid model is installed on the rigidity pole upper end vertically arranged, and is positioned at above support; Also comprise and be horizontally placed on torsion on support to vibration level, X axis vibration level and Y-axis vibration level; Described torsion comprises the first spring and link to vibration level, and described first spring is two, be arranged in parallel; Described link is the square box that diagonal line is connected by rigid rod, described link connects two first springs respectively by cornerwise two summits of square box, described first mass is two, be individually fixed on all the other two summits of square box, described rigidity pole is connected to the diagonal line point of crossing that in square box, two rigid rods connect; Described X axis vibration level comprises the second spring arranged along X-direction, and its two ends along X axis are all fixed on support, and middle part connects rigidity pole; Described Y-axis vibration level comprises the 3rd spring arranged along Y direction, and its two ends along Y-axis are all fixed on support, and middle part connects rigidity pole.
When using this pendulum-type air spring pole to test, due to reverse to vibration level control reverse to vibration, X axis vibration level controls the vibration of X axis, and Y-axis vibration level controls the vibration of Y-axis, between each vibration level and non-interference, therefore, its X axis, Y-axis and torsion to vibration do not intercouple, and reverse to vibration controlled by link, only torsion to vibration, do not produce the vibration of X axis or Y-axis, test findings accurately can be obtained.
Below further technical scheme is described:
In certain embodiments, described X axis vibration level also comprises slideway one; Described second spring is two, be arranged in parallel in the horizontal plane; Described slideway one connects two second springs, and vertical with the second spring; Described rigidity pole through slideway one, and is slidably matched with slideway one; Described Y-axis vibration level also comprises slideway two; Described 3rd spring is two articles, be arranged in parallel in the horizontal plane; Described slideway two connects two article of the 3rd spring, and vertical with the 3rd spring; Described rigidity pole through slideway two, and is slidably matched with slideway two.Enable each vibration level obtain continual and steady vibration simultaneously, rigidity pole can also be made to slide in slideway one, ensure that the motion of its left and right directions is unrestricted, and rigidity pole is slided in slideway two, ensure that the motion of its fore-and-aft direction is unrestricted.
In certain embodiments, described slideway one is two tracks be arranged in parallel, and slideway two is also two tracks be arranged in parallel.Structure is simple, and rigidity pole is passed by the middle of two tracks, and by two railway limits, makes it only do the slip of left and right or fore-and-aft direction relative to track.
In certain embodiments, also comprise the bearing one be set on rigidity pole, bearing two and bearing three, described bearing one and bearing two are located in slideway one and slideway two respectively; Described bearing three is between skyscraper rigid model and support.This model is mounted in wind field when carrying out wind tunnel test, bearing three is installed between skyscraper rigid model and support, i.e. wind field base plate place, ensure vibration damping, reduce the fricative power consumption between rigidity pole and wind field base plate.Equally, bearing one and bearing two are for ensureing that rigidity props up rod twisting to vibrating unaffected and hindering.
In certain embodiments, also comprise the second mass be connected with slideway two and the 3rd mass be connected with slideway three, described second mass is positioned at outside the perpendicular of slideway two place, and described 3rd mass is positioned at outside the perpendicular of slideway three place.The vibration regulating X axis and Y-axis is designed by the quality of quality of regulation block.
In certain embodiments, also comprise the oil damping device be positioned at below rigidity pole, described rigidity pole lower end is stretched in the damping oil of this oil damping device.Thus obtain suitable structural damping ratio.
In certain embodiments, described torsion is greater than distance between X axis vibration level and Y-axis vibration level to the distance between vibration level and X axis vibration level or Y-axis vibration level.During application, according to actual conditions, make torsion to vibration level away from X axis vibration level and Y-axis vibration level as far as possible.Make construction torsion to moment of inertia and the transverse vibration impact of rigidity on X-axis and Y-axis minimum.
In certain embodiments, described skyscraper rigid model is the rigid model of electric transmission pole tower.For carrying out the wind tunnel test of electric transmission pole tower.
The present invention also provides a kind of air spring pole to survey shake wind tunnel test methods, comprises the following steps:
1) pendulum-type air spring pole as the aforementioned is installed;
2) torsion is adjusted respectively to the rigidity of each spring and the quality of mass in vibration level, X axis vibration level and Y-axis vibration level according to testing requirements, make the vibration frequency of X axis vibration level and Y-axis vibration level meet the vibration requirement of test to X-axis and Y-axis, make torsion also meet testing requirements to the torsional inertia of vibration level; Make the quality of whole model meet testing requirements equally simultaneously;
3) the above-mentioned pendulum-type air spring pole meeting testing requirements is put into wind field, carry out wind tunnel test.
Below the advantage of preceding solution is described:
Pendulum-type air spring pole of the present invention, by model X axis, Y-axis and torsion are realized to vibrating the principle of carrying out respectively controlling, to make between each vibration level and non-interference, avoid the deficiency of existing structure, ensure that X axis, Y-axis and torsion to vibration do not intercouple, can more real reflect structure wind resistance effect, test findings accurately can be obtained.And design by changing the rigidity of spring and the quality of mass and control each vibration level flexibly, more accurately the rigidity of model configuration and quality.Simultaneously by designing and producing different skyscraper rigid models, the different building of simulation, remaining part is reusable, has the advantage that cost is low, easy to make.
Air spring pole of the present invention surveys shake wind tunnel test methods, by structure X axis, Y-axis and torsion to vibration adopt different layers spring control, each axial vibration is not coupled mutually, can more real reflect structure wind resistance effect, test findings more accurately can be obtained.
Accompanying drawing explanation
Fig. 1 is the pendulum-type air spring pole structural representation described in the embodiment of the present invention;
Fig. 2 is that the torsion of the embodiment of the present invention is to vibration level structural representation;
Fig. 3 is the X axis vibration level structural representation of the embodiment of the present invention;
Fig. 4 is the Y-axis vibration level structural representation of the embodiment of the present invention.
Description of reference numerals: 1. skyscraper rigid model; 2. rigidity pole; 3. support; 4. reverse to vibration level; 5. X axis vibration level; 6. Y-axis vibration level; 7. the first spring; 8. link; 9. the first mass; 10. the second spring; 11. the 3rd springs; 12. slideways one; 13. slideways two; 14. bearings one; 15. bearings two; 16. bearings three; 17. second masses; 18. the 3rd masses.
Embodiment
Below embodiments of the invention are described in detail:
As shown in Figure 1, a kind of pendulum-type air spring pole, comprises skyscraper rigid model 1, rigidity pole 2, support 3; Described skyscraper rigid model 1 is installed on rigidity pole 2 upper end vertically arranged, and is positioned at above support 3; Also comprise and be horizontally placed on torsion on support 3 to vibration level 4, X axis vibration level 5 and Y-axis vibration level 6; Described torsion comprises the first spring 7 and link 8 to vibration level 4, and described first spring 7 is two, be arranged in parallel; Described link 8 is the square box that diagonal line is connected by rigid rod, described link 8 connects two first springs 7 respectively by cornerwise two summits of square box, described first mass 9 is two, be individually fixed on all the other two summits of square box, described rigidity pole 2 is connected to the diagonal line point of crossing that in square box, two rigid rods connect; Described X axis vibration level 5 comprises the second spring 10 arranged along X-direction, and its two ends along X axis are all fixed on support 3, and middle part connects rigidity pole 2; Described Y-axis vibration level 6 comprises the 3rd spring 11 arranged along Y direction, and its two ends along Y-axis are all fixed on support 3, and middle part connects rigidity pole 2.
When using this pendulum-type air spring pole to test, due to reverse to vibration level 4 control reverse to vibration, X axis vibration level 5 controls the vibration of X axis, Y-axis vibration level 6 controls the vibration of Y-axis, between each vibration level and non-interference, therefore, its X axis, Y-axis and torsion to vibration do not intercouple, and reverse to vibration by link 8 control into only torsion to vibration, do not produce the vibration of X axis or Y-axis, test findings accurately can be obtained.
As shown in Figure 2, described torsion is in vibration level 4, and described first spring 7 is two, be arranged in parallel; Described link 8 is the square box that diagonal line is connected by rigid rod, described link 8 connects two first springs 7 respectively by cornerwise two summits of square box, described first mass 9 is fixed on all the other two summits of square box, and described rigidity pole 2 is connected to the diagonal line point of crossing that in square box, two rigid rods connect.Described torsion is simple to the structure of vibration level 4, stable, ensure to reverse to vibration meet testing requirements.
As shown in Figure 3, described X axis vibration level 5 also comprises slideway 1; Described second spring 10 is two, be arranged in parallel in the horizontal plane; Described slideway 1 connects two second springs 10, and vertical with the second spring 10; Described rigidity pole 2 through slideway 1, and is slidably matched with slideway 1; As shown in Figure 4, described Y-axis vibration level 6 also comprises slideway 2 13; Described 3rd spring 11 is two articles, be arranged in parallel in the horizontal plane; Described slideway 2 13 connects two article of the 3rd spring 11, and vertical with the 3rd spring 11; Described rigidity pole 2 through slideway 2 13, and is slidably matched with slideway 2 13.Each vibration level is enable to obtain continual and steady vibration simultaneously, rigidity pole 2 can also be made to slide in slideway 1, ensure that the motion of its left and right directions is unrestricted, and rigidity pole 2 is slided in slideway 2 13, ensure that the motion of its fore-and-aft direction is unrestricted.
Described slideway 1 is two tracks be arranged in parallel, and slideway 2 13 is also two tracks be arranged in parallel.Structure is simple, and rigidity pole 2 is passed by the middle of two tracks, and by two railway limits, makes it only do the slip of left and right or front and back relative to track.
Also comprise the bearing 1 be set on rigidity pole 2, bearing 2 15 and bearing 3 16, described bearing 1 and bearing 2 15 are located in slideway 1 and slideway 2 13 respectively; Described bearing 3 16 is between skyscraper rigid model 1 and support 3.This model is mounted in wind field when carrying out wind tunnel test, bearing 3 16 is installed between skyscraper rigid model 1 and support 3, i.e. wind field base plate place, ensure vibration damping, reduce the fricative power consumption between rigidity pole 2 and wind field base plate.Equally, bearing 1 and bearing 2 15 are for ensureing that rigidity pole 2 is reversed unaffected to vibration and hinders.
Also comprise the second mass 17 be connected with slideway 2 13 and the 3rd mass 18 be connected with slideway three, described second mass 17 is positioned at outside the perpendicular of slideway 2 13 place, and described 3rd mass 18 is positioned at outside the perpendicular of slideway three place.The vibration regulating X axis and Y-axis is designed by the quality of quality of regulation block.
Also comprise the oil damping device be positioned at below rigidity pole 2, described rigidity pole 2 lower end is stretched in the damping oil of this oil damping device.Thus obtain suitable structural damping ratio.
Described torsion is greater than the distance between X axis vibration level 5 and Y-axis vibration level 6 to the distance between vibration level 4 and X axis vibration level 5 or Y-axis vibration level 6.During application, according to actual conditions, make torsion to vibration level 4 away from X axis vibration level 5 and Y-axis vibration level 6 as far as possible.Make construction torsion to moment of inertia and the transverse vibration impact of rigidity on X-axis and Y-axis minimum.
Described skyscraper rigid model 1 is the rigid model of electric transmission pole tower.For carrying out the wind tunnel test of electric transmission pole tower.During in order to simulate different skyscrapers, each spring and mass can be changed by simple connected mode, guarantees quality and the rigidity of simulating different high building structure.
Adopt the pendulum-type air spring pole of the present embodiment to carry out air spring pole and survey shake wind tunnel test methods, comprise the following steps:
1) according to above-mentioned model structure, model buildings is good.
2) for reversing to vibration, by arranging moment of inertia and the rigidity reversing and carry out model configuration to the rigidity of the first spring 7 of vibration level 4 and the quality of the first mass 9; For the vibration frequency (seesawing namely in horizontal direction) of X axis, regulated by the quality of the rigidity and the second mass 17 that arrange the second spring 10 of X axis vibration level 5, and rigidity pole 2 is through slideway 2 13, and the motion of its left and right directions is unrestricted; For the vibration frequency (side-to-side movement namely in horizontal direction) of Y-axis, regulated by the quality of the rigidity and the 3rd mass 18 that arrange the 3rd spring 11 of Y-axis vibration level 6, and rigidity pole 2 is through slideway three, and the motion of its fore-and-aft direction is unrestricted.
3) the above-mentioned pendulum-type air spring pole meeting testing requirements is put into wind field, support 3 top and wind field base plate (namely simulating ground) are installed fixing, the electric transmission pole tower model of upper part is made to be in above wind field base plate, accept strong wind action, support 3 and each vibration level are in below wind field base plate, wherein, described bearing 3 16 is between skyscraper rigid model 1 and support 3, i.e. wind field base plate place, ensures vibration damping, reduces the fricative power consumption between rigidity pole 2 and wind field base plate.
4) start to carry out wind tunnel test, collect test figure and study.
The above embodiment only have expressed the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (7)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104122067A (en) * | 2013-04-24 | 2014-10-29 | 成都飞机设计研究所 | Bending-torsional stiffness uncoupled simulation mechanism for flutter wind tunnel test model |
| CN104596728B (en) * | 2015-02-05 | 2017-03-08 | 重庆大学 | A kind of large-scale gas chamber piston air spring pole method for designing based on coal gas internal pressure |
| CN106706259A (en) * | 2015-11-16 | 2017-05-24 | 王磊 | Three-way forced vibration wind tunnel test device and manufacturing process thereof |
| CN105890868B (en) * | 2015-12-09 | 2018-10-02 | 哈尔滨工业大学 | A kind of adjustable km grade high-rise building air spring pole and production method |
| CN105738069B (en) * | 2016-03-01 | 2018-01-16 | 陈增顺 | Aeroelastic test and the mixing flow tunnel testing device of manometric test can be carried out simultaneously |
| CN105628334B (en) * | 2016-03-25 | 2017-10-13 | 中南大学 | Simultaneous multi-pressure measurement and vibration measuring system and implementation method based on air spring pole |
| CN106053011B (en) * | 2016-08-05 | 2018-09-11 | 国网新疆电力公司电力科学研究院 | The pipe power transmission tower gas elastic model of U-shaped spring leaf is adjusted with rigidity |
| CN106289711B (en) * | 2016-08-05 | 2018-06-12 | 国网新疆电力公司电力科学研究院 | A kind of force test in wind tunnel method suitable for lattice round steel pipe power transmission tower |
| CN106768788B (en) * | 2016-12-28 | 2019-01-01 | 华南理工大学 | A kind of aeroelasticity experimental system |
| CN107894316B (en) * | 2017-11-10 | 2019-11-05 | 重庆大学 | New Wind Tunnel experimental rig is pressed in gas bullet-survey with pacing inertia force |
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| JPH01240835A (en) * | 1988-03-23 | 1989-09-26 | Sumitomo Heavy Ind Ltd | Wind tunnel model experimental method and model for wind tunnel experiment |
| CN101419117B (en) * | 2008-11-28 | 2010-06-09 | 北京航空航天大学 | Aeroelastic flutter generating device |
| CN201527334U (en) * | 2009-10-29 | 2010-07-14 | 浙江省电力公司超高压建设分公司 | Novel large-span electricity transmission steel pipe tower aeroelastic model |
| CN202735062U (en) * | 2012-09-07 | 2013-02-13 | 广东电网公司佛山供电局 | Pendulum type aeroelastic model |
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