JP2003268716A - Wind resistant damping device for bridge - Google Patents
Wind resistant damping device for bridgeInfo
- Publication number
- JP2003268716A JP2003268716A JP2002077612A JP2002077612A JP2003268716A JP 2003268716 A JP2003268716 A JP 2003268716A JP 2002077612 A JP2002077612 A JP 2002077612A JP 2002077612 A JP2002077612 A JP 2002077612A JP 2003268716 A JP2003268716 A JP 2003268716A
- Authority
- JP
- Japan
- Prior art keywords
- wind
- bridge
- bridge girder
- damping
- girder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、広くは構造物の
耐風制振装置に関し、特に橋梁の橋桁の耐風制振装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a wind resistant vibration damping device for structures, and more particularly to a wind resistant vibration damping device for bridge girders of bridges.
【０００２】[0002]
【従来の技術】橋梁が架設されて、自然風の作用下に置
かれたとき、その風の作用により橋桁に振動が生じるこ
とがある。この振動の種類としては、比較的弱風時（１
０ｍ／ｓ前後）に発生する渦励振、ならびに、強風時
（数１０ｍ／ｓ）に発生するフラッタと呼ばれる破局的
振動が知られている。また、この振動は、橋梁の規模
（スパン）が大きくなり、橋桁がフレキシブルな構造に
なるほど生じ易い。2. Description of the Related Art When a bridge is erected and placed under the action of natural wind, the action of the wind may cause vibration of the bridge girder. The types of this vibration are as follows:
Vortex excitation that occurs at around 0 m / s) and catastrophic vibration called flutter that occurs during strong winds (tens of m / s) are known. Further, this vibration is more likely to occur as the scale (span) of the bridge increases and the bridge girder has a flexible structure.
【０００３】このような振動に対して風洞実験により事
前に防止対策の検討が行われるが、その代表的な方法と
して、図１２に示すように、橋桁の断面形状を流線型に
近い形状にする工夫がなされている。しかしながら、流
線型に近い形状にした場合でも、図１２に示すように、
流線型の形状変化の部位で剥離流が発生し、この剥離流
がフラッタの原因になることが知られている。[0003] Wind tunnel experiments are conducted in advance to study preventive measures against such vibrations. A typical method is to devise a cross-sectional shape of the bridge girder to be close to a streamline shape, as shown in FIG. Has been done. However, even if the shape is close to a streamlined shape, as shown in FIG.
It is known that a separated flow occurs at a streamlined shape change site, and this separated flow causes flutter.
【０００４】そこで、最近では剥離流の影響をなくし
て、制振効果をさらに高めるための技術が例えば特開平
１０−３２５１０９号公報に橋桁のフラッタ防止装置と
して提案されている。同公報に示されたフラッタ防止装
置は、図１３に示すように、橋桁５１の幅方向中央部に
おける床版又は下面に、該床版又は下面との間に所定の
距離を離して前記床版又は下面に略平行に設置された平
板５３，５５と、該平板５３，５５に上下振動または回
動振動を与える駆動手段５７とを備えたものである。Therefore, recently, a technique for eliminating the influence of the separated flow to further enhance the vibration damping effect has been proposed as a bridge girder flutter prevention device in, for example, Japanese Patent Laid-Open No. 10-325109. As shown in FIG. 13, the flutter prevention device disclosed in the publication has the floor slab or the lower surface at the widthwise central portion of the bridge girder 51, the floor slab being separated from the floor slab or the lower surface by a predetermined distance. Alternatively, it is provided with flat plates 53 and 55 that are installed substantially parallel to the lower surface, and drive means 57 that applies vertical vibration or rotational vibration to the flat plates 53 and 55.
【０００５】[0005]
【発明が解決しようとする課題】同公報のものによれ
ば、前縁部（風上側の橋桁断面端部）で発生して流下し
ていく大きな剥離渦が路面中央部において撹乱されて弱
まり、風による振動現象を弱めることが期待できる。し
かし、路面中央部においては剥離渦が大きく発達してい
るため、これを充分に撹乱するには水平板を大きくする
か、多層構造にする必要があり、駆動装置も大掛かりと
なるため、コストが高くなるという問題がある。According to the publication, a large separation vortex that is generated at the leading edge (the end of the bridge girder cross section on the windward side) and flows down is disturbed and weakened in the central portion of the road surface. It can be expected to weaken the vibration phenomenon caused by wind. However, since the separation vortex is greatly developed in the center of the road surface, in order to sufficiently disturb it, it is necessary to enlarge the horizontal plate or to have a multi-layer structure. There is the problem of becoming expensive.
【０００６】本発明は、かかる課題を解決するためにな
されたものであり、橋桁の制振を効率的にできると共に
装置の小型化が可能な、橋桁の耐風制振装置を提供する
ものである。The present invention has been made in order to solve the above problems, and provides a wind-damping damping device for bridge girders, which can efficiently control the vibrations of the bridge girders and can be downsized. .
【０００７】[0007]
【課題を解決するための手段】本発明に係る橋桁の耐風
制振装置は、橋桁軸方向に所定間隔を離して複数の風車
を設置したものである。A wind-damping damping device for a bridge girder according to the present invention has a plurality of wind turbines installed at predetermined intervals in the axial direction of the bridge girder.
【０００８】また、風車を、橋桁の幅方向端部付近、特
に流れの剥離が生じる方向に桁形状が変形する部位近傍
に設置したものである。Further, the wind turbine is installed near the widthwise end of the bridge girder, especially near the portion where the girder shape is deformed in the direction where flow separation occurs.
【０００９】また、風車を駆動源とする発電機、および
該発電機により発電された電気を蓄積する蓄電装置を備
えたものである。Further, it is provided with a generator using a wind turbine as a drive source, and a power storage device for accumulating electricity generated by the generator.
【００１０】また、橋桁の軸方向に延びる平板翼と、該
平板翼を回転及び静止させる駆動装置と、橋桁に設置し
た風向・風速計からの入力信号に基づいて前記駆動装置
を制御する制御装置とを備えたものである。Further, a flat plate blade extending in the axial direction of the bridge girder, a drive device for rotating and stopping the flat plate blade, and a control device for controlling the drive device on the basis of an input signal from the wind direction and anemometer installed on the bridge girder. It is equipped with and.
【００１１】また、平板翼を、橋桁の幅方向端部付近、
特に流れの剥離が生じる方向に桁形状が変形する部位近
傍に設置したものである。In addition, a flat plate blade is provided near the widthwise end of the bridge girder,
In particular, it is installed near the portion where the girder shape is deformed in the direction where flow separation occurs.
【００１２】[0012]
【発明の実施の形態】実施の形態１．図１は本発明の一
実施の形態である耐風制振装置の説明図であり、耐風制
振装置を設置した橋桁の軸方向に垂直な断面図である。
図２は図１に示した橋桁の端部の拡大図、図３は図１に
示した橋桁の一部の側面図である。図において、１は両
側の端部を断面三角形状にした橋桁、３は橋桁１の上面
両側部及び中央部の地覆２に設けられた高欄、５は橋桁
１の幅方向両端部に設けられた耐風制振装置である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. FIG. 1 is an explanatory view of a wind resistant vibration damping device which is an embodiment of the present invention, and is a cross-sectional view perpendicular to the axial direction of a bridge girder in which the wind resistant vibration damping device is installed.
2 is an enlarged view of an end portion of the bridge girder shown in FIG. 1, and FIG. 3 is a side view of a part of the bridge girder shown in FIG. In the figure, 1 is a bridge girder whose both ends have a triangular cross-section, 3 is a balustrade provided on both sides of the upper surface of the bridge girder 1 and the ground cover 2 at the center, and 5 is provided on both widthwise ends of the bridge girder 1. It is a wind resistant vibration damping device.
【００１３】耐風制振装置５は、橋桁１の幅方向端部付
近、特に流れの剥離が生じる方向に桁形状が変形する部
位近傍に、橋軸方向に所定間隔を離して設置された複数
の風車７によって構成されている。流れの剥離が生じる
方向に桁形状が変形する部位とは、例えば図１において
はＡ点であり、橋桁端部から斜めになった線がこのＡ点
で水平方向に変形しており、ここで流れが剥離しやすく
なる。The wind-resistant vibration damping device 5 is installed in the vicinity of the end of the bridge girder 1 in the width direction, in particular, in the vicinity of the part where the girder shape is deformed in the direction in which flow separation occurs, at a predetermined interval in the bridge axial direction. It is composed of a windmill 7. The part where the girder shape is deformed in the direction in which flow separation occurs is, for example, point A in FIG. 1, and the line oblique to the end of the bridge girder is horizontally deformed at this point A. The flow is easy to separate.
【００１４】風車７には、図１に示すように、風車の回
転エネルギーによって発電する発電機９、および発電機
９で発電された電気を蓄積する蓄電装置１１が接続され
ている。さらに、蓄電装置１１には照明装置他１３が接
続されており、風車の回転によって蓄えられた電気エネ
ルギーが当該橋梁の照明装置他１３の電源として利用さ
れるような構成となっている。As shown in FIG. 1, the wind turbine 7 is connected to a generator 9 for generating electric power by the rotational energy of the wind turbine, and a power storage device 11 for storing the electricity generated by the generator 9. Further, a lighting device 13 and the like are connected to the power storage device 11 so that the electric energy stored by the rotation of the wind turbine is used as a power source of the lighting device 13 and the like of the bridge.
【００１５】図４、図５は本実施の形態の動作説明図で
あり、図４は図２と同じ図、図５は橋桁１の端部を上方
から見た図である。以下、上記のように構成された本実
施の形態の動作を、図４、図５に基づいて説明する。橋
桁１の側方から風が吹くと、図４に示すように、この風
が風車７を回転させる。風車７の後方では、風が乱され
乱流となり、これにより流れの再付着が促進され、剥離
流によるフラッタや渦励振を防止できる。また、風車７
が橋桁軸方向に所定間隔離して設置されているので、図
５に示すように、風の流れが、橋桁軸方向で、乱流域と
そうでない部分とが交互に存在することになる。このよ
うに、橋桁軸方向で、流れの非一様化が実現され、これ
によってもフタッタや渦励振が防止される。4 and 5 are diagrams for explaining the operation of the present embodiment, FIG. 4 is the same as FIG. 2, and FIG. 5 is a view of the end portion of the bridge girder 1 as seen from above. The operation of this embodiment configured as described above will be described below with reference to FIGS. 4 and 5. When the wind blows from the side of the bridge girder 1, this wind rotates the windmill 7, as shown in FIG. In the rear of the wind turbine 7, the wind is disturbed and becomes a turbulent flow, which promotes reattachment of the flow and prevents flutter and vortex excitation due to the separated flow. In addition, windmill 7
Are installed in the bridge girder axis direction for a predetermined period of time, so that as shown in FIG. 5, the wind flow in the bridge girder axis direction alternates between turbulent regions and non-turbulent regions. In this way, non-uniformity of the flow is realized in the bridge girder axis direction, which also prevents the lidter and vortex excitation.
【００１６】また、各風車７はそれぞれ独立で橋桁軸方
向に多数設置されており、橋桁軸方向で風が一様でない
場合でも、風のある場所で個々の風車が個別に回転して
乱流を生じさせることができる。Further, each wind turbine 7 is independently installed in a large number in the axial direction of the bridge girder, and even if the wind is not uniform in the axial direction of the bridge girder, the individual wind turbines rotate individually in a windy place to cause turbulent flow. Can be generated.
【００１７】以上のように、風車７が回転することで乱
流を生じさせ、剥離流によるフラッタや渦励振を防止で
きる。また、風車が回転することで発電機９によって発
電され、この電気が蓄電装置１１に蓄えられて照明装置
他の電源として利用される。このように、本実施の形態
によれば、フラッタや渦励振を防止に加えて風エネルギ
ーの効果的な利用が実現される。As described above, the turbulent flow is generated by the rotation of the wind turbine 7, and the flutter and vortex excitation due to the separated flow can be prevented. Further, when the wind turbine rotates, power is generated by the generator 9, and this electricity is stored in the power storage device 11 and used as a power source for the lighting device and the like. Thus, according to this embodiment, in addition to preventing flutter and vortex excitation, effective use of wind energy is realized.
【００１８】なお、風車７の設置場所（桁断面内の位
置、橋軸方向の設置間隔）については、橋桁の形状など
に応じて最適場所を事前に風洞実験により決定する。ま
た、設計風速に応じて、高風速に耐え得る風車タイプの
選定、設置治具の設計を行う。風車の例としては、例え
ば図６に示す、多翼型（図６（ａ））、オランダ型（図
６（ｂ））、２枚又は３枚翼プロペラ型（図６（ｃ））
がある。Regarding the installation location of the wind turbine 7 (position within the girder cross section, installation interval in the bridge axis direction), the optimum location is determined in advance by wind tunnel experiments according to the shape of the bridge girder and the like. Also, depending on the design wind speed, select a wind turbine type that can withstand the high wind speed and design the installation jig. Examples of wind turbines include, for example, the multi-blade type (FIG. 6 (a)), the Dutch type (FIG. 6 (b)), the two-blade or three-blade propeller type (FIG. 6 (c)) shown in FIG.
There is.
【００１９】なお、上記実施の形態においては、風車を
橋桁１の幅方向端部付近、特に流れの剥離が生じる方向
に桁形状が変形する部位近傍に設置したので、剥離流が
生ずる前に乱流を生じさせることができ、より確実に剥
離流の発生を防止できる。もっとも、風車７を橋桁の幅
方向中央寄りに設置しても、一定の効果を生じさせるこ
とができる。In the above-described embodiment, the wind turbine is installed near the widthwise end of the bridge girder 1, particularly near the portion where the girder shape is deformed in the direction where flow separation occurs, so that the disturbance occurs before the separation flow occurs. Flow can be generated, and the generation of a separated flow can be prevented more reliably. However, even if the wind turbine 7 is installed near the widthwise center of the bridge girder, a certain effect can be produced.
【００２０】実施の形態２．図７は本発明の他の実施の
形態の説明図であり、耐風制振装置を設置した橋桁の軸
方向に垂直な断面図、図８は図７に示した橋桁の端部の
拡大図、図９は図７に示した橋桁の一部の側面図であ
る。図において、実施の形態１を示した図１〜図３と同
一部分には同一の符号を付している。Embodiment 2. 7 is an explanatory view of another embodiment of the present invention, a cross-sectional view perpendicular to the axial direction of the bridge girder on which a wind resistant vibration damping device is installed, FIG. 8 is an enlarged view of an end portion of the bridge girder shown in FIG. 7, FIG. 9 is a side view of a part of the bridge girder shown in FIG. 7. In the figure, the same parts as those in FIGS. 1 to 3 showing the first embodiment are designated by the same reference numerals.
【００２１】本実施の形態の耐風制振装置１５は、橋桁
の幅方向両端部、特に流れの剥離が生じる方向に桁形状
が変形する部位Ａ近傍に設置され、駆動装置１７によっ
て強制的に回転又は静止できる平板翼１９を有するもの
である。平板翼１９は橋桁１の床版から所定の距離を離
して橋桁１の軸線に沿って延びる平板を連続的に設置し
たものである。そして、平板翼１９は所定の間隔ごとに
設置された駆動装置１７によって回転できるようになっ
ている。駆動装置１７は制御装置２１によって制御され
る。制御装置２１には、風洞実験により定めた風のパタ
ーンに応じた平板翼１９の最適な回転パターンを記憶さ
せておく。また、橋桁路面上には風向・風速計２３が併
設され、風向・風速計２３で計測された風向・風速に応
じて、制御装置２１により、最適な回転、静止状態を平
板翼１９に与えることができる。The wind-resistant vibration damping device 15 of the present embodiment is installed at both widthwise ends of the bridge girder, particularly near the portion A where the girder shape is deformed in the direction where flow separation occurs, and is forcibly rotated by the drive device 17. Alternatively, it has a flat plate blade 19 that can be stationary. The flat plate blade 19 is formed by continuously installing flat plates extending along the axis of the bridge girder 1 at a predetermined distance from the deck of the bridge girder 1. Further, the flat plate blades 19 can be rotated by the driving device 17 installed at predetermined intervals. The drive device 17 is controlled by the control device 21. The controller 21 stores the optimum rotation pattern of the flat blade 19 according to the wind pattern determined by the wind tunnel experiment. An anemometer / anemometer 23 is also provided on the road surface of the bridge girder, and the control device 21 provides the flat blades 19 with optimum rotation and standstill according to the anemometer / emitter speed measured by the anemometer / emmeter 23. You can
【００２２】図１０、図１１は本実施の形態の動作説明
図であり、図８と同様に橋桁の端部を拡大して示してい
る。以下、上記のように構成された本実施の形態の動作
を、図１０、図１１に基づいて説明する。FIG. 10 and FIG. 11 are explanatory diagrams of the operation of the present embodiment, and show the end portion of the bridge girder in an enlarged manner as in FIG. Hereinafter, the operation of this embodiment configured as described above will be described with reference to FIGS. 10 and 11.
【００２３】橋桁１の側方から強風が吹くとき、平板翼
１９を駆動装置１７によって図中反時計方向に回転させ
る。この図において反時計方向とは、風の流れを橋桁方
向に押しつける方向である。これにより、流れの再付着
が促進され、剥離流によるフラッタや渦励振を防止でき
る。特に、本実施の形態の平板翼１９は駆動装置１７に
よって強制的に回転されるものであり、効果的に剥離流
の防止が可能である。また、実際の風に対する平板翼１
９の最適な回転パターンが予め風洞実験により定められ
ており、風のパターンに応じて平板翼１９の適切に回転
させることができるので、より確実に剥離流の防止が可
能であり、信頼性の高い耐風制振装置を提供することが
できる。When a strong wind blows from the side of the bridge girder 1, the flat blade 19 is rotated counterclockwise in the figure by the drive unit 17. In this figure, the counterclockwise direction is a direction in which the wind flow is pressed toward the bridge girder. This promotes reattachment of the flow and prevents flutter and vortex excitation due to the separated flow. In particular, the flat plate blade 19 of the present embodiment is forcibly rotated by the drive device 17, and the separated flow can be effectively prevented. In addition, the flat blade 1 against the actual wind
The optimum rotation pattern of No. 9 has been determined in advance by a wind tunnel experiment, and the flat plate blades 19 can be appropriately rotated according to the wind pattern, so that the separated flow can be prevented more reliably and the reliability can be improved. It is possible to provide a high wind resistant vibration damping device.
【００２４】弱風時には、平板翼１９を静止させて、図
１１に示すように、整流板として使用し、渦励振防止用
の耐風制振装置として用いることができる。平板翼１９
の最適静止位置（水平位置から何度傾けるか）について
も、事前に風洞実験により定めることにより、信頼性の
高い制振が可能となる。When the wind is weak, the flat plate blade 19 can be made stationary and used as a current plate as shown in FIG. 11, and can be used as a wind resistant vibration damping device for preventing vortex excitation. Flat blade 19
The optimum rest position (how many times it is tilted from the horizontal position) is also determined in advance by a wind tunnel experiment, so that highly reliable vibration suppression is possible.
【００２５】また、本実施の形態においては、平板翼１
９を橋桁の幅方向両端部、特に流れの剥離が生じる方向
に桁形状が変形する部位近傍に設置したので、装置規模
を小さくして効率よく流れの制御を行うことができる。In the present embodiment, the flat plate blade 1
Since 9 is installed in the widthwise both ends of the bridge girder, particularly in the vicinity of the part where the girder shape is deformed in the direction where flow separation occurs, the device scale can be reduced and the flow can be efficiently controlled.
【００２６】[0026]
【発明の効果】以上説明したように、本発明において
は、風車又は平板翼によって風の流れを乱す等により、
剥離流の発生を抑制するようにしたので、小型の装置で
橋桁の制振を効率的にできる。As described above, in the present invention, the wind flow is disturbed by the wind turbine or the flat blade,
Since the generation of separated flow is suppressed, it is possible to efficiently control the bridge girder with a small device.
【図１】 本発明の一実施の形態である耐風制振装置の
説明図である。FIG. 1 is an explanatory diagram of a wind resistant vibration damping device according to an embodiment of the present invention.
【図２】 図１に示した橋桁の端部の拡大図である。FIG. 2 is an enlarged view of an end portion of the bridge girder shown in FIG.
【図３】 図１に示した橋桁の一部の側面図である。FIG. 3 is a side view of a part of the bridge girder shown in FIG. 1.
【図４】 実施の形態１の動作説明図である。FIG. 4 is an operation explanatory diagram of the first embodiment.
【図５】 実施の形態１の動作説明図である。FIG. 5 is an operation explanatory diagram of the first embodiment.
【図６】 実施の形態１における風車の他の例の説明図
である。FIG. 6 is an explanatory diagram of another example of the wind turbine in the first embodiment.
【図７】 本発明の他の実施の形態の説明図である。FIG. 7 is an explanatory diagram of another embodiment of the present invention.
【図８】 図７に示した橋桁の端部の拡大図である。FIG. 8 is an enlarged view of an end portion of the bridge girder shown in FIG. 7.
【図９】 図７に示した橋桁の一部の側面図である。9 is a side view of a part of the bridge girder shown in FIG. 7. FIG.
【図１０】 本実施の形態２の動作説明図である。FIG. 10 is an operation explanatory diagram of the second embodiment.
【図１１】 本実施の形態２の動作説明図である。FIG. 11 is an operation explanatory diagram of the second embodiment.
【図１２】 従来の橋桁の形状の説明図である。FIG. 12 is an explanatory diagram of a shape of a conventional bridge girder.
【図１３】 従来のフラッタ防止装置の説明図である。FIG. 13 is an explanatory diagram of a conventional flutter prevention device.
１ 橋桁 ５ 耐風制振装置 ７ 風車 ９ 発電機 １１ 蓄電装置 １５ 耐風制振装置 １７ 駆動装置 １９ 平板翼 ２１ 制御装置 ２３ 風向・風速計 1 bridge girder 5 Wind-proof damping device 7 windmill 9 generator 11 Power storage device 15 Wind-resistant damping device 17 Drive 19 flat plate wings 21 Control device 23 Wind direction and anemometer
Claims (5)
車を設置したことを特徴とする橋桁の耐風制振装置。1. A wind-damping damping device for a bridge girder, wherein a plurality of wind turbines are installed at predetermined intervals in the axial direction of the bridge girder.
れの剥離が生じる方向に桁形状が変形する部位近傍に設
置したことを特徴とする請求項１記載の橋桁の耐風制振
装置。2. The wind-damping damping device for a bridge girder according to claim 1, wherein the wind turbine is installed near an end portion in the width direction of the bridge girder, particularly near a portion where the girder shape is deformed in a direction where flow separation occurs. .
電機により発電された電気を蓄積する蓄電装置を備えた
ことを特徴とする請求項１又は２記載の橋桁の耐風制振
装置。3. The wind-damping damping device for a bridge girder according to claim 1 or 2, further comprising: a generator using a wind turbine as a drive source, and a power storage device that stores electricity generated by the generator.
翼を回転及び静止させる駆動装置と、橋桁に設置した風
向・風速計からの入力信号に基づいて前記駆動装置を制
御する制御装置とを備えたことを特徴とする橋桁の耐風
制振装置。4. A flat plate blade extending in the axial direction of the bridge girder, a drive device for rotating and stopping the flat plate blade, and a control device for controlling the drive device based on an input signal from the wind direction and anemometer installed on the bridge girder. A wind-resistant vibration control device for bridge girders, which is equipped with.
流れの剥離が生じる方向に桁形状が変形する部位近傍に
設置したことを特徴とする請求項４記載の橋桁の耐風制
振装置。5. The wind-damping-resistant vibration of a bridge girder according to claim 4, wherein the flat blades are installed near the widthwise ends of the bridge girder, particularly near the portion where the girder shape is deformed in the direction where flow separation occurs. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002077612A JP2003268716A (en) | 2002-03-20 | 2002-03-20 | Wind resistant damping device for bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002077612A JP2003268716A (en) | 2002-03-20 | 2002-03-20 | Wind resistant damping device for bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003268716A true JP2003268716A (en) | 2003-09-25 |
Family
ID=29205782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002077612A Pending JP2003268716A (en) | 2002-03-20 | 2002-03-20 | Wind resistant damping device for bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003268716A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015537185A (en) * | 2012-11-30 | 2015-12-24 | レンセレイアー ポリテクニック インスティテュート | Method and system for modifying air flow in a building structure |
| CN113235398A (en) * | 2021-06-02 | 2021-08-10 | 哈尔滨工业大学 | Active air suction and blowing intelligent control device for wind-induced vibration of single box girder of long-span bridge girder |
-
2002
- 2002-03-20 JP JP2002077612A patent/JP2003268716A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015537185A (en) * | 2012-11-30 | 2015-12-24 | レンセレイアー ポリテクニック インスティテュート | Method and system for modifying air flow in a building structure |
| CN113235398A (en) * | 2021-06-02 | 2021-08-10 | 哈尔滨工业大学 | Active air suction and blowing intelligent control device for wind-induced vibration of single box girder of long-span bridge girder |
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