JPS60175606A - Wind resistance vibration-proof apparatus of square structure - Google Patents
Wind resistance vibration-proof apparatus of square structureInfo
- Publication number
- JPS60175606A JPS60175606A JP2872784A JP2872784A JPS60175606A JP S60175606 A JPS60175606 A JP S60175606A JP 2872784 A JP2872784 A JP 2872784A JP 2872784 A JP2872784 A JP 2872784A JP S60175606 A JPS60175606 A JP S60175606A
- Authority
- JP
- Japan
- Prior art keywords
- flow
- vibration
- plate
- square structure
- box 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.)
- Granted
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は箱桁橋梁等の如き角状構造物の耐風防振装置に
係るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a windproof and vibration isolating device for square structures such as box girder bridges.
箱桁橋梁（α）に耐風防振装置が設けられない場合、第
１図に示すように流れ（ｈ）が角部から剥離して後流に
カルマン渦（Ｃ）が発生し、橋梁（α）に渦動振力が作
用するため橋梁（α）が振動する。If the box girder bridge (α) is not equipped with a windproof vibration isolation device, the flow (h) will separate from the corners and a Karman vortex (C) will occur in the wake, as shown in Figure 1, and the bridge (α ), the bridge (α) vibrates due to the eddy vibration force acting on it.
この振動を抑止するため、第２図に示す如き高欄より外
側上方に指向して適当な傾斜角で延びる整流板（フラッ
プ）（ｄ）、第３図に示す如き整流板（ダブルフラップ
）（ｅ）、第４図に示す如き流れ方向に張出した板（プ
レート）（イ）を設置すると、角部での流れの剥離が抑
えられ、防振作用が発揮されることは従来より知られて
いた。In order to suppress this vibration, a current plate (flap) (d) that extends outward and upward from the railing as shown in Figure 2 at an appropriate inclination angle, a current plate (double flap) (e) as shown in Figure 3, ), it has been known for a long time that installing a plate (a) that extends in the flow direction as shown in Figure 4 suppresses flow separation at corners and exerts a vibration-proofing effect. .
しかしながら整流板（フラップ）は流れを抑え加速し、
渦を吹流す効果を持つため、流れ（ｈ）が吹きおろしの
時には効果が大きいが、流れ＜ｈ＞が水平または吹上げ
の時には効果が少ない。However, the current plate (flap) suppresses the flow and accelerates it.
Since it has the effect of blowing up a vortex, the effect is great when the flow (h) is blowing down, but it is less effective when the flow <h> is horizontal or blowing up.
−０方、板（プレート）は構造物の角部の流れを円滑に
流し、流れを速めて剥離しようとする流れを抑える効果
があるが、その結果流れ（ｈ）全体が構造物に相対的に
吹きおろすこととなり、ずんぐりした橋梁の場合は却っ
て振動を助長することになる。On the −0 side, the plate has the effect of smoothing the flow at the corner of the structure, accelerating the flow, and suppressing the flow that tries to separate, but as a result, the entire flow (h) is relative to the structure. If the bridge is stubby, this will actually exacerbate the vibrations.
本発明はこのような問題点を解決するために提案された
もので、角状構造物の角部外側に、同構造物と間隔を存
して流れを抑え且つ加速する整流板と、同角部内側に流
れを抑える流れ方向に張出した板とを配設してなること
を特徴とする角状構造物の耐風防振装置に係るものであ
る。The present invention was proposed in order to solve these problems, and includes a rectifying plate that suppresses and accelerates the flow by being spaced from the corner of the square structure, and This invention relates to a windproof and vibration-proofing device for a square structure, characterized in that a plate extending in the flow direction for suppressing the flow is disposed on the inner side of the part.
本発明に係る角状構造物においては前記したように、角
部外側に同構造物と間隔を存して流れを抑え且つ加速す
る整流板と、同角部内側に流れを抑える流れ方向に張出
した板とを組合わせて取付けたので、前記板によって流
れ全体を相対的に吹きおろさせ、この吹きおろしの流れ
に対して極めて効果の大きい整流板によって流れを抑え
加速して渦を吹き流し、角状構造物の後流に渦流が生起
しにくいようにして、同構造物の振動を抑制するもので
ある。As described above, in the angular structure according to the present invention, there is a rectifying plate on the outside of the corner that is spaced from the structure and suppresses and accelerates the flow, and on the inside of the corner there is a rectifying plate that suppresses the flow and extends in the flow direction. Since the plate is installed in combination with a plate, the plate allows the entire flow to be relatively blown down, and the rectifying plate, which is extremely effective against this blown-down flow, suppresses the flow and accelerates it, blowing away the vortex, and blowing away the vortex. This is to suppress the vibration of the structure by making it difficult for vortices to occur in the wake of the structure.
このように本発明によれば従来の割振効果の少ない割振
装置、または却って振動を増大せしめるような、悪影響
を及ばす制振装置を組合せて取付けることによって、割
振効果の極め【大きい角状構造物の耐風防振装置を構成
するものである。As described above, according to the present invention, by installing a conventional allocating device that has little allocating effect in combination with a vibration damping device that has a negative effect such as increasing vibration, it is possible to maximize the allocating effect [large angular structure]. This constitutes a windproof and vibration isolating device.
以下本発明を箱桁Ｕに適用した図示の実施例について説
明する。The illustrated embodiment in which the present invention is applied to a box girder U will be described below.
（１）は箱桁橋梁で、その角部外側に同橋梁（１）と間
隔を存して外側上方に指向して延びる整流板（フラップ
）（２）と、流れ＜ｂ＞方向に張出した板（プレー）
） （３）とが配設されている。(1) is a box girder bridge, with a rectifying plate (flap) (2) that extends outward and upward at a distance from the bridge (1) on the outside of the corner, and a flap that extends in the direction of the flow <b>. board (play)
) (3) are provided.
図示の実施例は前記したように構成されているので、前
記板（プレー） ） （３）によって流れ（ｂ）全体を
相対的に吹きおろさせ、吹きおろしの流れに対して極め
て効果の大きい整流板（フラップ）（３）によって流れ
を抑え加速して渦を吹流し、箱桁橋梁（１）後流に渦流
を生起しにりくシて振動を抑制するものである。Since the illustrated embodiment is constructed as described above, the entire flow (b) is relatively blown down by the plate (3), and rectification is extremely effective for the blown down flow. The plate (flap) (3) suppresses the flow and accelerates it to blow away the vortex, preventing the generation of a vortex flow behind the box girder bridge (1) and suppressing vibration.
第６図は箱桁橋梁の振動試験結果を示す図表で、第１図
に示す如き耐風防振装置のない場合の振幅を１．０とし
て、他の型式の箱桁橋梁の割振効果を相対的に表わした
もので、（Ａ）は第１図に示した制振装置のない箱桁橋
梁、（Ｂ）は第２図に示す如き整流板（フラップ）（ｄ
）の取付けられた箱桁橋梁、（Ｃ）は第４図に示す如き
板（プレート）鎖の取付けられた箱桁橋梁、（Ｄ）は本
発明に係る箱桁橋梁を示す。Figure 6 is a chart showing the results of vibration tests for box girder bridges.The amplitude in the case without wind-resistant vibration isolation devices as shown in Figure 1 is set to 1.0, and the distribution effects of other types of box girder bridges are compared relative to each other. (A) is the box girder bridge without the damping device shown in Fig. 1, and (B) is the rectifier plate (flap) (d) shown in Fig. 2.
) shows a box girder bridge with attached plate chains, (C) shows a box girder bridge with plate chains as shown in FIG. 4, and (D) shows a box girder bridge according to the present invention.
以上本発明を実施例について説明したが、本発明は勿論
このような実施例にだけ局限されるものではなく、本発
明の精神を逸脱しない範囲内で種々の設計の改変を施し
うるものである。Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .
第１図は耐風防振装置の設置されない箱桁橋梁の渦の生
成状態を示す説明図、第２図及び第３図並に第４図は夫
々従来の耐風制振装置を具えた箱桁橋梁の渦の生成状態
を示す説明図、第５図は本発明に係る耐風制振装置の一
実施例を具えた箱桁橋梁の渦の生成状態を示す説明図、
第６図は前記各箱桁橋梁の振動試験結果を示す図表であ
る。
（１）・・・箱桁橋梁、（２）・・・整流板、（３）・
・・板復代理人 弁理士 岡 本 重 文
外３名Figure 1 is an explanatory diagram showing the state of vortex generation in a box-girder bridge without wind-resistant and vibration-damping devices, and Figures 2, 3, and 4 are box-girder bridges equipped with conventional wind-resistant and vibration-damping devices. FIG. 5 is an explanatory diagram showing the state of vortex generation in a box girder bridge equipped with an embodiment of the wind-resistant vibration damping device according to the present invention;
FIG. 6 is a chart showing the vibration test results for each of the box girder bridges. (1)... Box girder bridge, (2)... Current plate, (3)...
...Itafu's agent Patent attorney Shige Okamoto 3 other people
Claims (1)
を抑え且つ加速する整流板と、同角部内側に流れを抑え
る流れ方向に張出した板とを配設してなることを特徴と
する角状構造物の耐風防振装置。A rectifier plate is arranged on the outside of the corner of a square structure to suppress and accelerate the flow by being spaced from the same structure, and a plate extending in the flow direction to suppress the flow is arranged on the inside of the corner. A wind-resistant and vibration-proofing device for a square structure, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59028727A JPH0663205B2 (en) | 1984-02-20 | 1984-02-20 | Wind-proof anti-vibration device for angular structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59028727A JPH0663205B2 (en) | 1984-02-20 | 1984-02-20 | Wind-proof anti-vibration device for angular structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60175606A true JPS60175606A (en) | 1985-09-09 |
| JPH0663205B2 JPH0663205B2 (en) | 1994-08-22 |
Family
ID=12256461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59028727A Expired - Lifetime JPH0663205B2 (en) | 1984-02-20 | 1984-02-20 | Wind-proof anti-vibration device for angular structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0663205B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005239422A (en) * | 2004-01-29 | 2005-09-08 | Mitsubishi Heavy Ind Ltd | Container crane |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5148523U (en) * | 1974-10-08 | 1976-04-12 | ||
| JPS58218562A (en) * | 1982-06-11 | 1983-12-19 | 三菱重工業株式会社 | Wind resistant and vibration-proof apparatus of rectangular structure |
-
1984
- 1984-02-20 JP JP59028727A patent/JPH0663205B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5148523U (en) * | 1974-10-08 | 1976-04-12 | ||
| JPS58218562A (en) * | 1982-06-11 | 1983-12-19 | 三菱重工業株式会社 | Wind resistant and vibration-proof apparatus of rectangular structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005239422A (en) * | 2004-01-29 | 2005-09-08 | Mitsubishi Heavy Ind Ltd | Container crane |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0663205B2 (en) | 1994-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |