CN104032683A - Shutter type wind shield for high-speed railway bridge - Google Patents
Shutter type wind shield for high-speed railway bridge Download PDFInfo
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- CN104032683A CN104032683A CN201410252295.1A CN201410252295A CN104032683A CN 104032683 A CN104032683 A CN 104032683A CN 201410252295 A CN201410252295 A CN 201410252295A CN 104032683 A CN104032683 A CN 104032683A
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Abstract
The invention discloses a shutter type wind shield for a high-speed railway bridge. The wind shield comprises at least two stand columns, wherein a gap is reserved between every two stand columns, bottoms of the stand columns are fixed on the ground or on a base, at least one wind blocking blade which can rotate along the central axis of the blade and used for blocking crosswind is arranged between every two adjacent stand columns, and a gap is reserved between rotation tracks of every two adjacent wind blocking blades. The wind blocking blades change rotation angles according to the magnitude of the crosswind, and for small-magnitude crosswind, the flow direction of the crosswind is changed while ventilation is performed through rotation of the small-angle wind blocking blades; for large-magnitude crosswind, the wind blocking blades rotate to be parallel to the wind coming direction, the crosswind directly passes through the gaps between the wind blocking blades, andthe wind load acting force caused by the large-magnitude crosswind to the shutter type wind shield is reduced, so that the effect transmitted by the shutter type wind shield to the bridge at the lower part is reduced, the normal design and operation of the bridge are guaranteed, and the extra cost caused by resistance to the crosswind is reduced.
Description
Technical field
The present invention relates to railroad bridge device technique field, be specifically related to a kind of venetian blind type wind barrier for high-speed railway bridge.
Background technology
Along with developing rapidly of high-speed railway, thing followed bullet train safety problem also embodies one by one.Beam wind is one of threat of bullet train, and train moves the effect that is subject to the lateral force that beam wind causes under beam wind, easily topples, the threat such as derailing, and high wind effect has seriously limited train running speed.For maintaining train operation stability, adopt mode that wind barrier is set in circuit both sides to provide low wind speed running environment for strong wind district train.
Current wind barrier all adopts stationary structure, ensures train windproof effect by reducing ventilative rate and increasing barrier height.But the beam wind aerodynamic force that so just causes high wind leeward barrier to be subject to is excessive, bring fatigue problem to wind barrier.Meanwhile, wind barrier is fixed on bridge, and the wind load acting on barrier is delivered to bridge construction, makes bridge bear huge wind load, has brought very large problem to bridge design and operation.
Therefore, study a kind of novel venetian blind type wind barrier for high-speed railway bridge, become technical problem urgently to be resolved hurrily.
Summary of the invention
In order to make up the defect of prior art, patent of the present invention provides a kind of venetian blind type wind barrier for high-speed railway bridge, to solve existing fixed wind barrier in the fatigue failure that continues to produce under beam wind effect; The high-strength wind load being subject to is delivered to bridge by wind barrier, thereby cause the technical problem of bridge collapse.
In order to realize above-mentioned technical purpose, the technical scheme of patent of the present invention is: a kind of venetian blind type wind barrier for high-speed railway bridge, comprise at least two root posts, between column, leave spacing, column bottom fix on the ground or base on, it is characterized in that, between adjacent two root posts, being provided with at least one can rotate along blade axis and in order to stop the blade that keeps out the wind of beam wind, between the rotary motion trace of two adjacent blades that keep out the wind, leave spacing.
Preferably, the blade two ends of keeping out the wind are flexibly connected with the column of end respectively by turning cylinder.
Preferably, the middle part of the blade that keeps out the wind is penetrated with an elongated turning cylinder, and the two ends of turning cylinder are fixed in respectively on the column of end, and the blade that keeps out the wind is rotating to be sheathed on turning cylinder.
Preferably, turning cylinder and/or the blade that keeps out the wind are provided with the position-limit mechanism in order to the spacing distance between blade tip and column of keeping keeping out the wind.
Preferably, keep out the wind blade all along the direction laying perpendicular to column; Or keep out the wind blade all with column oblique.
Preferably, wind barrier also includes controller; On at least one blade that keeps out the wind, be provided with to respond to the wind sensor of wind-force; Keep out the wind and be connected with on blade in order to the keep out the wind angle positioning of blade (2) anglec of rotation of restriction; Wind sensor connects controller, and controller connects and control angle detent mechanism.
Preferably, angle positioning is at least one in alignment pin, locating clip, retainer spring, spring hinge, Location resilient piece.
Preferably, column is along arranged in a straight line, and the arrangement straight line of column is parallel with the rail on railroad bridge.
Preferably, column comprises the first column of arranging near rail and the second column of arranging away from rail.
Preferably, the first column and the second column are intervally arranged.
Beneficial effect of the present invention is:
The present invention, for the venetian blind type wind barrier of high-speed railway bridge, by the mode of the blade that keeps out the wind is set between two adjacent upright, utilizes the anglec of rotation adjusting louver window formula wind barrier of blade and contact surface form and the ventilative rate of beam wind of keeping out the wind.The blade that keeps out the wind changes the anglec of rotation according to the wind-force size of beam wind, during in the face of little air quantity beam wind, carries out changing ventilative time beam wind flow direction by rotating the low-angle blade that keeps out the wind; During in the face of Wind Volume beam wind, keep out the wind blade rotary to the fair state of the direction of the wind comes from, beam wind directly sees through by the gap of keeping out the wind between blade, reduce the wind action power of Wind Volume beam wind for venetian blind type wind barrier, thereby reduce venetian blind type wind barrier and pass to lower bridge beam action, ensure the normal design of bridge and operation, reduce the extra cost that opposing beam wind causes.Between the rotary motion trace of two adjacent blades that keep out the wind, leave spacing, can prevent that adjacent two formation rotations between blade of keeping out the wind from hindering, simultaneously, utilize the spacing between rotary motion trace, the wind-force that utilizes rotation to produce in the time keeping out the wind blade rotation for one drives the adjacent blade rotary that keeps out the wind, thereby produces chain rotatablely moving.
Below in conjunction with accompanying drawing, patent of the present invention is described further.
Brief description of the drawings
Fig. 1 is the structural representation of the venetian blind type wind barrier for high-speed railway bridge of the embodiment of the present invention;
Fig. 2 is the structural representation of the venetian blind type wind barrier for high-speed railway bridge in original state of the embodiment of the present invention;
Fig. 3 is the structural representation of the venetian blind type wind barrier for high-speed railway bridge of 30 ° of the blade rotaries of keeping out the wind of the embodiment of the present invention;
Fig. 4 is the structural representation that is arranged on the venetian blind type wind barrier for high-speed railway bridge on railroad bridge of the embodiment of the present invention;
Fig. 5 is the top view of Fig. 4;
Fig. 6 be the embodiment of the present invention without car time the keep out the wind pressure cloud atlas of the venetian blind type wind barrier for high-speed railway bridge of 30 ° of blade rotaries;
Fig. 7 be the embodiment of the present invention without car time the keep out the wind speed vector figure of the venetian blind type wind barrier for high-speed railway bridge of 30 ° of blade rotaries;
Fig. 8 be the embodiment of the present invention without car time the keep out the wind pressure cloud atlas of the venetian blind type wind barrier for high-speed railway bridge of 150 ° of blade rotaries;
Fig. 9 be the embodiment of the present invention without car time the keep out the wind speed vector figure of the venetian blind type wind barrier for high-speed railway bridge of 150 ° of blade rotaries.
Wherein 1 is column, and 2 is the blade that keeps out the wind, and 3 is turning cylinder, 4, on ground or base.
Detailed description of the invention
Below to the further illustrating of patented technology content of the present invention, but the not restriction to patent flesh and blood of the present invention.
Fig. 1 is the structural representation of the venetian blind type wind barrier for high-speed railway bridge of the embodiment of the present invention; Fig. 2 is the structural representation of the venetian blind type wind barrier for high-speed railway bridge in original state of the embodiment of the present invention; Fig. 3 is the structural representation of the venetian blind type wind barrier for high-speed railway bridge of 30 ° of the blade rotaries of keeping out the wind of the embodiment of the present invention; Fig. 4 is the structural representation that is arranged on the venetian blind type wind barrier for high-speed railway bridge on railroad bridge of the embodiment of the present invention; Fig. 5 is the top view of Fig. 4; Fig. 6 be the embodiment of the present invention without car time the keep out the wind pressure cloud atlas of the venetian blind type wind barrier for high-speed railway bridge of 30 ° of blade rotaries; Fig. 7 be the embodiment of the present invention without car time the keep out the wind speed vector figure of the venetian blind type wind barrier for high-speed railway bridge of 30 ° of blade rotaries; Fig. 8 be the embodiment of the present invention without car time the keep out the wind pressure cloud atlas of the venetian blind type wind barrier for high-speed railway bridge of 150 ° of blade rotaries; Fig. 9 be the embodiment of the present invention without car time the keep out the wind speed vector figure of the venetian blind type wind barrier for high-speed railway bridge of 150 ° of blade rotaries.
As shown in Figure 1, a kind of venetian blind type wind barrier for high-speed railway bridge of the embodiment of the present invention, comprise at least two root posts 1, between column 1, leave spacing, column 1 bottom fix on the ground or base 4 on, between adjacent two root posts 1, being provided with at least one can rotate along blade axis and in order to stop the blade 2 that keeps out the wind of beam wind, between the rotary motion trace of two adjacent blades 2 that keep out the wind, leave spacing.The present invention, for the venetian blind type wind barrier of high-speed railway bridge, by the mode of the blade that keeps out the wind is set between two adjacent upright, utilizes the anglec of rotation adjusting louver window formula wind barrier of blade and contact surface form and the ventilative rate of beam wind of keeping out the wind.The blade that keeps out the wind changes the anglec of rotation according to the wind-force size of beam wind, during in the face of little air quantity beam wind, carries out changing ventilative time beam wind flow direction by rotating the low-angle blade that keeps out the wind; During in the face of Wind Volume beam wind, keep out the wind blade rotary to the fair state of the direction of the wind comes from, beam wind directly sees through by the gap of keeping out the wind between blade, reduce the wind action power of Wind Volume beam wind for venetian blind type wind barrier, thereby reduce venetian blind type wind barrier and pass to the effect of bottom bridge c, ensure the normal design of bridge c and operation, reduce the extra cost that opposing beam wind causes.Between the rotary motion trace of two adjacent blades that keep out the wind, leave spacing, can prevent that adjacent two formation rotations between blade of keeping out the wind from hindering, simultaneously, utilize the spacing between rotary motion trace, the wind-force that utilizes rotation to produce in the time keeping out the wind blade rotation for one drives the adjacent blade rotary that keeps out the wind, thereby produces chain rotatablely moving.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, it is also, blade 2 two ends of keeping out the wind are flexibly connected with the column 1 of end respectively by turning cylinder 3.The blade 2 that keeps out the wind is overall structure with turning cylinder 3, and overall structure is rotated on column 1 by turning cylinder 3, thereby adapts to the beam wind effect of different air quantity.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, it is also, the middle part of the blade 2 that keeps out the wind is penetrated with an elongated turning cylinder 3, the two ends of turning cylinder 3 are fixed in respectively on the column 1 of end, the blade 2 that keeps out the wind is rotating to be sheathed on turning cylinder 3.Rotate on turning cylinder 3 by the blade 2 that keeps out the wind, thereby adapt to the beam wind effect of different air quantity.
It is also, turning cylinder 3 and/or the blade 2 that keeps out the wind are provided with the position-limit mechanism in order to the spacing distance between blade 2 ends and column 1 of keeping keeping out the wind.
It is also, the blade 2 that keeps out the wind is all laid along the direction perpendicular to column 1; Or keep out the wind blade 2 all with column 1 oblique.
It is also, wind barrier also includes controller; On at least one blade 2 that keeps out the wind, be provided with to respond to the wind sensor of wind-force; Keep out the wind and be connected with on blade 2 in order to the keep out the wind angle positioning of blade 2 anglecs of rotation of restriction; Wind sensor connects controller, and controller connects and control angle detent mechanism.
It is also, angle positioning is at least one in alignment pin, locating clip, retainer spring, spring hinge, Location resilient piece.
It is also, column 1 is along arranged in a straight line, and the arrangement straight line of column 1 is parallel with the rail on railroad bridge.
It is also, column 1 comprises the first column of arranging near rail and the second column of arranging away from rail.
It is also, the first column and the second column are intervally arranged.
Fig. 6 and Fig. 7 are pressure cloud atlas and the speed vector figure in little corner (30 °) situation, can see low-angle blade tilt on circuit for train a operation provides stable pressure and low wind speed environment, air-flow can direct effect to train a.
Fig. 8 and Fig. 9 are pressure cloud atlas and the speed vector figure in little corner (150 °) situation, can see that the blade tilt of wide-angle has reduced the wind speed on circuit equally, and airflow function, in train a bottom, has reduced the aerodynamic force of train a.Hinder outside pressure compared with smaller screen, reduce the aerodynamic force of beam wind to barrier simultaneously.
When enforcement, changed and stopped that the mode of incoming flow and incoming flow are by the outflow angle after barrier by setting blade 2 anglecs of rotation of keeping out the wind, the aeroperformance that research brings thus changes, and realizes by changing blade 2 angles the object that changes ventilative rate.Its principle is as shown in Fig. 1,2,3,4,5.The rotation of the axis of rotation 3 of venetian blind type wind barrier of the present invention by being located at certain position of blade of keeping out the wind changes blade 2 angles of keeping out the wind, and changes the angle of cut of incoming flow and blade by the variation of the anglec of rotation, changes the outflow mode of wake flow simultaneously.In the time that blade and the vertical direction angle of cut are 0 °, be assumed to original state, be equivalent to arrange airfast wind barrier, now ventilative rate is 0, stops incoming flow effect maximum; In the time that being 90 °, the angle of cut is equivalent to arrange horizontal paling form wind barrier, now ventilative rate maximum, and most incoming flows all can see through, and are conducive to high wind and do the protection of used time to wind barrier and bridge c; In the time that the angle of cut is 180 °, get back to again stuffy barrier form.Keeping out the wind blade in the middle of the one-period of 0～180 ° of variation, and the direction of incoming flow after wind barrier is by upwards gradually becoming downwards, and certain angle has also been avoided the vertical severe impact of air-flow to verge board.Because the blade that keeps out the wind has certain thickness, its end is made into fusiformis and can ensures to close completely.Whole barrier, is arranged at a certain distance the rotatable blade 2 that keeps out the wind is installed between 1, two column 1 of column by anchor connection on the bridge floor edge of a wing.
Venetian blind type wind barrier of the present invention is also to realize the object that changes wind barrier height by changing the keep out the wind height of blade 2 and the quantity of the blade 2 that keeps out the wind of monolithic.Be to change angle and reach the object that changes ventilative rate and airflow direction water conservancy diversion.
When venetian blind type wind barrier of the present invention is also to adopt ACTIVE CONTROL, control the angle of inclination of the blade 2 that keeps out the wind by controlling the rotation of turning cylinder 3.While adopting Passive Control, drive the rotation of the blade 2 that keeps out the wind by the stressed rotation of plate.
In addition, in different incoming flow situations, the angle which kind of mode to change the blade 2 that keeps out the wind by is also a problem that is worth research.The angle that can change according to the wind speed of incoming flow and the wind angle of attack etc. blade 2, can be divided into active and two kinds of modes of passive type.For example, obtain wind field data by establish monitoring wind field device at work point place, or on wind barrier sensor installation, and send data to electronic intelligence system and control the modes such as blade angle and realize ACTIVE CONTROL, be called active; Or forming spring hinge at axis of rotation mounting spring device, the mode of directly blowing top blade by the wind-force of incoming flow changes the modes such as blade angle and realizes passive rotation, is similar to the operating principle of swinging door, is called passive type.
When venetian blind type wind barrier of the present invention changes the anglec of rotation of the blade 2 that keeps out the wind, also the angle and the fluid that have changed reflection incoming flow act on the force direction on barrier simultaneously, in the time that the anglec of rotation changes, incoming flow is vertical component velocity by horizontal velocity Partial Conversion after blade 2 reflections of keeping out the wind, now be equivalent to, in to 2 one lateral forces of blade that keep out the wind, return 2 one the vertical aerodynamic force of blade that keep out the wind.Keep the less anglec of rotation by the keep out the wind anglec of rotation of blade 2 and numerical value direction of change, train a by time ensure train a aeroperformance, without car by time keeps and level is smaller angle to improve the aeroperformance of wind barrier and bridge c.
As shown in Figure 4 and Figure 5, H is wind barrier height, and h is verge board height, and b is verge board thickness, and β is the anglec of rotation, and L is column spacing.These parameters all can be adjusted in conjunction with correlative study according to actual track.The present invention is applicable to all kinds of high-speed railway bridges, particularly Longspan Bridge.Can improve this aeroperformance in strong wind of running train, bridge and barrier, improve the force-bearing situation of bridge construction and accessory structure thereof, barrier structure, improve fatigue life, improve the service level of whole rail track.
The invention belongs to one of primary study content of project of national nature science fund project (51178471,51322808), for running train aeroperformance and safety traffic provide more accurate wind tunnel test means, thereby for the technical support that provides of bullet train safe operation is provided.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure transformation that utilizes description of the present invention to do, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. the venetian blind type wind barrier for high-speed railway bridge, comprise at least two root posts (1), column leaves spacing between (1), column (1) bottom fix on the ground or base (4) on, it is characterized in that, between adjacent two root posts (1), being provided with at least one can rotate along blade axis and in order to stop the blade that keeps out the wind (2) of beam wind, between the rotary motion trace of adjacent two blades that keep out the wind (2), leave spacing.
2. the venetian blind type wind barrier for high-speed railway bridge according to claim 1, is characterized in that, the blade that keeps out the wind (2) two ends are flexibly connected with the column (1) of end respectively by turning cylinder (3).
3. the venetian blind type wind barrier for high-speed railway bridge according to claim 1, it is characterized in that, the keep out the wind middle part of blade (2) is penetrated with an elongated turning cylinder (3), the two ends of turning cylinder (3) are fixed in respectively on the column (1) of end, and the blade that keeps out the wind (2) is rotating to be sheathed on turning cylinder (3).
4. the venetian blind type wind barrier for high-speed railway bridge according to claim 3, it is characterized in that, turning cylinder (3) and/or the blade that keeps out the wind (2) are provided with the position-limit mechanism in order to the spacing distance between blade (2) end and column (1) of keeping keeping out the wind.
5. according to the venetian blind type wind barrier for high-speed railway bridge described in any one in claim 1 to 4, it is characterized in that, the blade that keeps out the wind (2) is all laid along the direction perpendicular to column (1); Or the blade that keeps out the wind (2) all with column (1) oblique.
6. according to the venetian blind type wind barrier for high-speed railway bridge described in any one in claim 1 to 4, it is characterized in that, wind barrier also includes controller; On at least one blade that keeps out the wind (2), be provided with to respond to the wind sensor of wind-force; Keep out the wind and be connected with on blade (2) in order to the keep out the wind angle positioning of blade (2) anglec of rotation of restriction; Wind sensor connects controller, and controller connects and control angle detent mechanism.
7. the venetian blind type wind barrier for high-speed railway bridge according to claim 6, is characterized in that, angle positioning is at least one in alignment pin, locating clip, retainer spring, spring hinge, Location resilient piece.
8. according to the venetian blind type wind barrier for high-speed railway bridge described in any one in claim 1 to 4, it is characterized in that, column (1) is along arranged in a straight line, and the arrangement straight line of column (1) is parallel with the rail on railroad bridge.
9. according to the venetian blind type wind barrier for high-speed railway bridge described in any one in claim 1 to 4, it is characterized in that, column (1) comprises the first column of arranging near rail and the second column of arranging away from rail.
10. according to the venetian blind type wind barrier for high-speed railway bridge described in any one in claim 1 to 4, it is characterized in that, the first column and the second column are intervally arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410252295.1A CN104032683A (en) | 2014-06-10 | 2014-06-10 | Shutter type wind shield for high-speed railway bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410252295.1A CN104032683A (en) | 2014-06-10 | 2014-06-10 | Shutter type wind shield for high-speed railway bridge |
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| CN201410252295.1A Pending CN104032683A (en) | 2014-06-10 | 2014-06-10 | Shutter type wind shield for high-speed railway bridge |
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Cited By (16)
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| CN104894987A (en) * | 2015-04-09 | 2015-09-09 | 山西尚风科技股份有限公司 | Bridge air barrier with full automatic intelligent control |
| CN106192725A (en) * | 2016-07-16 | 2016-12-07 | 王萌 | A kind of adjustable bridge abat-vent |
| CN106337374A (en) * | 2016-09-27 | 2017-01-18 | 谢晓红 | Wind shield for highway bridge |
| CN107044093A (en) * | 2017-03-16 | 2017-08-15 | 中南大学 | Flap type sound of the wind barrier |
| CN107245939A (en) * | 2017-03-16 | 2017-10-13 | 中国铁路总公司 | Spinning sound of the wind barrier for garage's bridge |
| CN107242058A (en) * | 2017-07-10 | 2017-10-13 | 新疆林业科学院 | Strong wind area afforestation windbreak and the method afforested using the windbreak |
| CN107881932A (en) * | 2017-12-14 | 2018-04-06 | 泉州市宏恩新能源汽车科技有限公司 | A kind of adaptive anti-beam wind fence |
| CN108867422A (en) * | 2018-08-13 | 2018-11-23 | 中南大学 | A kind of multi-functional sound of the wind barrier of environment-friendly and energy-efficient |
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| CN111831012A (en) * | 2020-07-03 | 2020-10-27 | 长沙理工大学 | Intelligent adjustable air barrier system on bridge and control method thereof |
| CN112359735A (en) * | 2020-11-23 | 2021-02-12 | 新疆大学 | Novel double-layer wind barrier under strong wind and sand environment |
| CN112647437A (en) * | 2020-12-16 | 2021-04-13 | 上海应用技术大学 | Adjustable windproof guardrail device and windproof guardrail system |
| CN112854035A (en) * | 2021-03-09 | 2021-05-28 | 中南大学 | Novel bridge windbreak |
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| CN104894987A (en) * | 2015-04-09 | 2015-09-09 | 山西尚风科技股份有限公司 | Bridge air barrier with full automatic intelligent control |
| CN106192725A (en) * | 2016-07-16 | 2016-12-07 | 王萌 | A kind of adjustable bridge abat-vent |
| CN106337374A (en) * | 2016-09-27 | 2017-01-18 | 谢晓红 | Wind shield for highway bridge |
| CN107044093A (en) * | 2017-03-16 | 2017-08-15 | 中南大学 | Flap type sound of the wind barrier |
| CN107245939A (en) * | 2017-03-16 | 2017-10-13 | 中国铁路总公司 | Spinning sound of the wind barrier for garage's bridge |
| CN107242058A (en) * | 2017-07-10 | 2017-10-13 | 新疆林业科学院 | Strong wind area afforestation windbreak and the method afforested using the windbreak |
| CN107881932A (en) * | 2017-12-14 | 2018-04-06 | 泉州市宏恩新能源汽车科技有限公司 | A kind of adaptive anti-beam wind fence |
| CN108867422B (en) * | 2018-08-13 | 2023-12-26 | 中南大学 | Environment-friendly energy-saving type multifunctional wind sound barrier |
| CN108867422A (en) * | 2018-08-13 | 2018-11-23 | 中南大学 | A kind of multi-functional sound of the wind barrier of environment-friendly and energy-efficient |
| CN109141807A (en) * | 2018-09-18 | 2019-01-04 | 中南大学 | The model in wind tunnel and wind tunnel test methods of photovoltaic structure |
| CN109141807B (en) * | 2018-09-18 | 2024-01-30 | 中南大学 | Wind tunnel test model and wind tunnel test method of photovoltaic structure |
| CN111254847A (en) * | 2020-03-22 | 2020-06-09 | 山西尚风科技股份有限公司 | Reversible decompression windbreak device |
| CN111831012A (en) * | 2020-07-03 | 2020-10-27 | 长沙理工大学 | Intelligent adjustable air barrier system on bridge and control method thereof |
| CN111831012B (en) * | 2020-07-03 | 2023-09-05 | 长沙理工大学 | Intelligent adjustable wind barrier system on bridge and control method thereof |
| CN112359735A (en) * | 2020-11-23 | 2021-02-12 | 新疆大学 | Novel double-layer wind barrier under strong wind and sand environment |
| CN112647437A (en) * | 2020-12-16 | 2021-04-13 | 上海应用技术大学 | Adjustable windproof guardrail device and windproof guardrail system |
| CN112854035A (en) * | 2021-03-09 | 2021-05-28 | 中南大学 | Novel bridge windbreak |
| CN112854035B (en) * | 2021-03-09 | 2021-11-09 | 中南大学 | Novel bridge windbreak |
| CN113652979A (en) * | 2021-08-25 | 2021-11-16 | 吉林建筑大学 | Adjustable windbreak for bridge construction |
| CN115354593A (en) * | 2022-08-18 | 2022-11-18 | 中电建路桥集团有限公司 | Damping wind barrier of variable gesture |
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Application publication date: 20140910 |
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| RJ01 | Rejection of invention patent application after publication |