CN104535288A - Wind tunnel experiment device for testing bridge aerodynamic parameters under skew wind action - Google Patents
Wind tunnel experiment device for testing bridge aerodynamic parameters under skew wind action Download PDFInfo
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- CN104535288A CN104535288A CN201410800052.7A CN201410800052A CN104535288A CN 104535288 A CN104535288 A CN 104535288A CN 201410800052 A CN201410800052 A CN 201410800052A CN 104535288 A CN104535288 A CN 104535288A
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Abstract
The invention discloses a wind tunnel experiment device for testing bridge aerodynamic parameters under the skew wind action. The wind tunnel experiment device comprises a bridge section model and model supports (31). The bottom of a bottom face supporting plate (32) of a front compensation bridge section (12), the bottom of a bottom face supporting plate (32) of a rear compensation bridge section (14) and the bottom of a bottom face supporting plate (32) of a force measuring bridge section (13) are hinged to the tops of the model supports (31) through hinge bolts (33), bottom plates (34) of the model supports (31) are connected with a bar-shaped steel plate (5) through fastening bolts (35), the bottom of the model support (31) of the force measuring bridge section (13) is further connected with the bar-shaped steel plate through a force measuring balance (4), the force measuring balance (4) is further electrically connected with a data processing device, and the bar-shaped steel plate (5) is fixed to a rotating plate (21) of a bottom plate of a wind tunnel (2). The wind tunnel experiment device can measure the bridge aerodynamic parameters under the skew wind action and provide reliable bridge wind-induced response experiment data for bridge wind-resistant design, evaluation and checking calculation.
Description
Technical field
The present invention relates to a kind of bridge model wind tunnel test equipment, particularly relate to a kind of wind tunnel test equipment testing aerodynamic forces of bridge parameter under skew wind effect.
Background technology
Along with the continuous increase of modern bridge span, bridge becomes more soft, and also more and more responsive to wind action, anti-wind problems has become the critical problem that Longspan Bridge is built.When carrying out wind force proofing design and wind-excited responese checking computations to bridge structure, aerodynamic forces of bridge parameter is its important foundation, and therefore the Measurement accuracy of static(al) aerodynamic parameter is a very important link.Usual employing wind tunnel test measuring apparatus aerodynamic forces of bridge parameter, but existing testing equipment is fixing uncontrollable mostly, and simultaneously due to the restriction of wind tunnel test condition, incoming flow wind also cannot regulate.Therefore, existing test unit, when studying the problem of Longspan Bridge wind-induced vibration under wind action, can only consider these special circumstances of orthogonal wind usually.And in fact the prevailing wind at bridge site place often becomes certain drift angle and the angle of attack with spanning direction, it is under skew wind effect that relevant research also show the most dangerous wind state of carrying of bridge.Thus the wind tunnel test equipment of aerodynamic forces of bridge parameter under needing the effect of development and testing skew wind badly, for Wind-resistance of Bridges designs the accuracy check experimental data providing more reliable bridge wind-excited responese with assessment, to ensure the safety and reliably of bridge.
Summary of the invention
The object of the present invention is to provide the aerodynamic parameter wind tunnel test testing equipment of a kind of bridge health test and diagnostics under skew wind effect, this equipment can test the aerodynamic parameter of bridge under skew wind effect, can check with assessment the experimental data that reliable bridge wind-excited responese is provided, to ensure that the safety of bridge is with reliable for Wind-resistance of Bridges designs.
The present invention realizes the technical scheme that its goal of the invention adopts: a kind of wind tunnel test equipment testing aerodynamic forces of bridge parameter under skew wind effect, comprise the dynamometry beam section of the precompensation beam section of bridge health test and diagnostics, post-compensation beam section and centre, by the model support that bridge health test and diagnostics is connected with wind-tunnel base plate, the concrete structure that described bridge health test and diagnostics is connected with wind-tunnel base plate is:
Supporting plate is all fixed in bottom surface in the middle part of the precompensation beam section of described bridge health test and diagnostics, post-compensation beam section and dynamometry beam section, bottom supporting plate with the top of model support by vertical bridge to link bolt hinged; The base plate of the model support of precompensation beam section, post-compensation beam section by fastening bolt be fixed on bar steel plate indulge bridge to bar hole on; Be connected with bar steel plate by force balance bottom the model support of dynamometry beam section, force balance is also electrically connected with data acquisition and data processing equipment; Be fixed in the middle part of described bar steel plate on the rotating disk of wind-tunnel base plate.
The course of work of the present invention and principle of work are:
By regulating the position of fastening bolt on bar hole, wind tunnel experiment can be carried out to different length beam section; Rotating bar steel plate makes its rotating disk with wind-tunnel base plate turn to specified angle, to realize the object that angle of wind deflection regulates; Link bolt is unscrewed, bridge health test and diagnostics is rotated to specified angle around link bolt, then screws link bolt, to realize the object that the wind angle of attack regulates; During work, by wind-tunnel motor provider to constant incoming flow wind effect, after bridge health test and diagnostics regulates, not on its orthogonal directions, certain angle that made flow path direction and bridge structure to have, thus bridge health test and diagnostics receives oblique wind action, the force balance being arranged on bridge health test and diagnostics bottom can measure the acting force that model is subject to.The signal of force balance by data acquisition and treating apparatus process, can measure the aerodynamic parameter of bridge health test and diagnostics under skew wind effect after amplifying.
Compared with prior art, the invention has the beneficial effects as follows:
One, the present invention is by the rotation of bar steel plate and wind-tunnel base plate rotating disk, realize the adjustment of angle of wind deflection, and bridge health test and diagnostics can be made to rotate around link bolt, realize the adjustment of the wind angle of attack, thus the quiet general mood kinetic parameter of different section form bridge under accurately can recording the skew wind effect of the different wind angle of attack and angle of wind deflection.The accuracy checking the experimental data that more reliable bridge wind-excited responese is provided with assessment can be designed, to ensure that the safety of bridge is with reliable for Wind-resistance of Bridges.
Two, by regulating the position of fastening bolt on bar hole, can realize the wind tunnel test of different length beam section, it is applied widely.
Bridge health test and diagnostics is made up of forward and backward compensation beam section and middle dynamometry beam section, and interlude does not contact with front and rear sections; Interlude lower end connects force balance, forward and backward beam section lower end connecting bridge beam model support.For middle force-measuring section, forward and backward beam section is equivalent to aerodynamic force transition section, can the actual bridge of real simulation on the impact of wind field, by the setting of this pneumatic transition section, ensure that the aerodynamic force as the intermediate beam section of force-measuring section is stablized, reduce the impact of the Three dimensional Flow of bridge model two sections, thus measure the impact of middle dynamometry beam section by skew wind effect more accurately, more meet real bridge stressing conditions.
Bottom above-mentioned supporting plate with the top of model support by vertical bridge to the hinged concrete structure of link bolt be: have projection with holes bottom supporting plate, groove with holes with this male cooperation is arranged at the top of model support, and link bolt is simultaneously through the hole of supporting plate projection and the hole of rack groove.
Such articulated structure, structure is simple, easy to operate, be not only easy to realize to the adjustment of the bridge health test and diagnostics wind angle of attack but convenient regulate after be fixed.
Below in conjunction with accompanying drawing and concrete embodiment, the present invention will be further described in detail.
Accompanying drawing explanation
Fig. 1 be example of the present invention face structural representation.
Fig. 2 is the partial enlarged drawing of part A in Fig. 1.
Fig. 3 is the side-looking structural representation after the present invention removes wind-tunnel.
Fig. 4 is the vertical view of bar steel plate of the present invention.
Embodiment
Embodiment
Fig. 1-4 illustrates, a kind of wind tunnel test equipment testing aerodynamic forces of bridge parameter under skew wind effect, comprise the dynamometry beam section 13 of the precompensation beam section 12 of bridge health test and diagnostics, post-compensation beam section 14 and centre, by the model support 31 that bridge health test and diagnostics is connected with wind-tunnel 2 base plate, the concrete structure that described bridge health test and diagnostics is connected with wind-tunnel 2 base plate is:
Supporting plate 32 is all fixed in bottom surface in the middle part of the precompensation beam section 12 of described bridge health test and diagnostics, post-compensation beam section 14 and dynamometry beam section 13, hinged to the link bolt 33 of the axis direction of i.e. bridge (longitudinal direction of bridge also) by vertical bridge with the top of model support 31 bottom supporting plate 32; The base plate 34 of the model support 31 of precompensation beam section 12, post-compensation beam section 14 by fastening bolt 35 be fixed on bar steel plate 5 indulge bridge to bar hole 51 on; Be connected with bar steel plate 5 by force balance 4 bottom the model support 31 of dynamometry beam section 13, force balance 4 is also electrically connected with data acquisition and data processing equipment; Be fixed in the middle part of described bar steel plate 5 on the rotating disk 21 of wind-tunnel 2 base plate.
Fig. 2 and Fig. 1 Fig. 3 illustrates, bottom supporting plate 32 with the top of model support 31 by vertical bridge to the hinged concrete structure of link bolt 33 be: have projection with holes bottom supporting plate 32, groove with holes with this male cooperation is arranged at the top of model support, and link bolt 33 is simultaneously through the hole of supporting plate 32 projection and the hole of rack groove.
Hole in the present invention on model support 31 groove can be a vertical elongated hole, and link bolt 33 slightly can move at vertical direction, thus can finely tune bridge height.
Claims (2)
1. test the wind tunnel test equipment of aerodynamic forces of bridge parameter under skew wind effect for one kind, comprise the dynamometry beam section (13) of the precompensation beam section (12) of bridge health test and diagnostics, post-compensation beam section (14) and centre, by the model support (31) that bridge health test and diagnostics is connected with wind-tunnel (2) base plate, it is characterized in that: the concrete structure that described bridge health test and diagnostics is connected with wind-tunnel (2) base plate is:
Supporting plate (32) is all fixed in the bottom surface at the precompensation beam section (12) of described bridge health test and diagnostics, post-compensation beam section (14) and dynamometry beam section (13) middle part, the top of supporting plate (32) bottom and model support (31) by vertical bridge to link bolt (33) hinged; The base plate (34) of the model support (31) of precompensation beam section (12), post-compensation beam section (14) by fastening bolt (35) be fixed on the vertical bridge of bar steel plate (5) to bar hole (51) on; Model support (31) bottom of dynamometry beam section (13) is connected with bar steel plate (5) by force balance (4), and force balance (4) is also electrically connected with data acquisition and data processing equipment; Described bar steel plate (5) middle part is fixed on the rotating disk (21) of wind-tunnel (2) base plate.
2. a kind of wind tunnel test equipment testing aerodynamic forces of bridge parameter under skew wind effect according to claim 1, it is characterized in that: the top of described supporting plate (32) bottom and model support (31) by vertical bridge to the hinged concrete structure of link bolt (33) be: have projection with holes bottom supporting plate (32), groove with holes with this male cooperation is arranged at the top of model support, and link bolt (33) is simultaneously through the hole of supporting plate (32) projection and the hole of rack groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410800052.7A CN104535288A (en) | 2014-12-19 | 2014-12-19 | Wind tunnel experiment device for testing bridge aerodynamic parameters under skew wind action |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410800052.7A CN104535288A (en) | 2014-12-19 | 2014-12-19 | Wind tunnel experiment device for testing bridge aerodynamic parameters under skew wind action |
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| CN104535288A true CN104535288A (en) | 2015-04-22 |
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| CN201410800052.7A Pending CN104535288A (en) | 2014-12-19 | 2014-12-19 | Wind tunnel experiment device for testing bridge aerodynamic parameters under skew wind action |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387989A (en) * | 2015-11-24 | 2016-03-09 | 中国石油天然气管道工程有限公司 | Method for providing metal wires on pipeline model to simulate wind-resisting characteristic of suspension cable pipe bridge |
| CN106441784A (en) * | 2016-11-25 | 2017-02-22 | 中国石油天然气集团公司 | Testing device for measuring static three-component force coefficient of cable-suspended piping bridge |
| CN106768787A (en) * | 2016-11-25 | 2017-05-31 | 中国石油天然气集团公司 | Determine the test method of pipeline suspension bridge aerodynamic force correlation in turbulent performance |
| CN107607289A (en) * | 2017-09-29 | 2018-01-19 | 广东省建筑科学研究院集团股份有限公司 | Aerodynamic balance measuring device for bridge health test and diagnostics wind tunnel test |
| CN112067236A (en) * | 2020-09-23 | 2020-12-11 | 重庆大学 | Double-balance synchronous rigid force-measuring wind tunnel test device |
| CN114354111A (en) * | 2022-01-06 | 2022-04-15 | 长安大学 | Vehicle-bridge coupling vibration test structure |
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| JPH02150737A (en) * | 1988-12-01 | 1990-06-11 | Mitsubishi Heavy Ind Ltd | Bridge model for wind tunnel test |
| JPH09203685A (en) * | 1996-01-26 | 1997-08-05 | Nkk Corp | Model support method in wind tunnel test and apparatus for the method |
| CN101968399A (en) * | 2010-10-18 | 2011-02-09 | 西南交通大学 | Wind tunnel testing system for vehicle and bridge models |
| CN102288381A (en) * | 2011-05-05 | 2011-12-21 | 西北工业大学 | Wing tip support device for wind tunnel test |
| CN102706529A (en) * | 2012-06-08 | 2012-10-03 | 中国人民解放军国防科学技术大学 | Method for calibrating and measuring supersonic flow field density field |
| CN203688194U (en) * | 2013-10-23 | 2014-07-02 | 西南交通大学 | Angle of wind deflection conversion device for large-span bridge wind tunnel testing |
| CN204314048U (en) * | 2014-12-19 | 2015-05-06 | 西南交通大学 | The flow tunnel testing device of aerodynamic forces of bridge parameter under the effect of test skew wind |
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2014
- 2014-12-19 CN CN201410800052.7A patent/CN104535288A/en active Pending
Patent Citations (7)
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| JPH02150737A (en) * | 1988-12-01 | 1990-06-11 | Mitsubishi Heavy Ind Ltd | Bridge model for wind tunnel test |
| JPH09203685A (en) * | 1996-01-26 | 1997-08-05 | Nkk Corp | Model support method in wind tunnel test and apparatus for the method |
| CN101968399A (en) * | 2010-10-18 | 2011-02-09 | 西南交通大学 | Wind tunnel testing system for vehicle and bridge models |
| CN102288381A (en) * | 2011-05-05 | 2011-12-21 | 西北工业大学 | Wing tip support device for wind tunnel test |
| CN102706529A (en) * | 2012-06-08 | 2012-10-03 | 中国人民解放军国防科学技术大学 | Method for calibrating and measuring supersonic flow field density field |
| CN203688194U (en) * | 2013-10-23 | 2014-07-02 | 西南交通大学 | Angle of wind deflection conversion device for large-span bridge wind tunnel testing |
| CN204314048U (en) * | 2014-12-19 | 2015-05-06 | 西南交通大学 | The flow tunnel testing device of aerodynamic forces of bridge parameter under the effect of test skew wind |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387989A (en) * | 2015-11-24 | 2016-03-09 | 中国石油天然气管道工程有限公司 | Method for providing metal wires on pipeline model to simulate wind-resisting characteristic of suspension cable pipe bridge |
| CN105387989B (en) * | 2015-11-24 | 2017-09-01 | 中国石油天然气集团公司 | The method for setting wire to simulate pipeline suspension bridge wind resistant property on pipeline model |
| CN106441784A (en) * | 2016-11-25 | 2017-02-22 | 中国石油天然气集团公司 | Testing device for measuring static three-component force coefficient of cable-suspended piping bridge |
| CN106768787A (en) * | 2016-11-25 | 2017-05-31 | 中国石油天然气集团公司 | Determine the test method of pipeline suspension bridge aerodynamic force correlation in turbulent performance |
| CN106768787B (en) * | 2016-11-25 | 2018-11-02 | 中国石油天然气集团公司 | Measure the test method of pipeline suspension bridge aerodynamic force correlation in turbulent performance |
| CN107607289A (en) * | 2017-09-29 | 2018-01-19 | 广东省建筑科学研究院集团股份有限公司 | Aerodynamic balance measuring device for bridge health test and diagnostics wind tunnel test |
| CN112067236A (en) * | 2020-09-23 | 2020-12-11 | 重庆大学 | Double-balance synchronous rigid force-measuring wind tunnel test device |
| CN114354111A (en) * | 2022-01-06 | 2022-04-15 | 长安大学 | Vehicle-bridge coupling vibration test structure |
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Application publication date: 20150422 |
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