JP2533330Y2 - Bridge shock absorber - Google Patents
Bridge shock absorberInfo
- Publication number
- JP2533330Y2 JP2533330Y2 JP5995591U JP5995591U JP2533330Y2 JP 2533330 Y2 JP2533330 Y2 JP 2533330Y2 JP 5995591 U JP5995591 U JP 5995591U JP 5995591 U JP5995591 U JP 5995591U JP 2533330 Y2 JP2533330 Y2 JP 2533330Y2
- Authority
- JP
- Japan
- Prior art keywords
- shock absorber
- bridge
- piston
- cylinder
- orifice
- 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.)
- Expired - Lifetime
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この考案は橋梁用緩衝装置のう
ち、特に密閉シリンダー型式の緩衝装置の改良に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a closed cylinder type shock absorber among bridge shock absorbers.
【０００２】[0002]
【従来の技術】多径間連続橋梁は地震時に発生する橋軸
方向水平力を各々の橋脚へ分散させることが望ましい。2. Description of the Related Art In a continuous multi-span bridge, it is desirable to disperse the horizontal force in the bridge axis direction generated during an earthquake to each pier.
【０００３】そのため１つの手段として支承とダンパー
を併用する方法が知られている。この方法は温度変化に
よるゆっくとりした桁の可動は逃がし、地震時の急激な
可動に対してはダンパーで抵抗しようとする考え方で、
粘性体の粘着力による抵抗を利用したものや、オイルシ
リンダーのオリフィスによる流動抵抗によるもの等が公
知である。For this reason, a method of using a bearing and a damper together as one means is known. In this method, the movement of the girder slowly taken off by the temperature change is released, and the damper is used to resist sudden movement during an earthquake,
Known are those utilizing the resistance due to the adhesive force of the viscous material, those utilizing the flow resistance due to the orifice of the oil cylinder, and the like.
【０００４】[0004]
【考案が解決しようとする課題】上記のうち、粘性体の
粘着力によるダンパは函体が大きくなり新設の大型橋梁
等には適しているが、小型の橋梁や既設の橋梁の補修工
事には不向きである。[Problems to be solved by the invention] Among the above, the damper due to the adhesive force of the viscous body has a large box and is suitable for newly built large bridges, etc., but it is suitable for repair work of small bridges and existing bridges. Not suitable.
【０００５】またオイルダンパーも既に実用化され数ケ
所の橋梁に共用されているが、構造が精密を要し、高価
であるほかオイルの点検等のメンテナンスを必要とし、
あまり普及されていない。[0005] Oil dampers have already been put to practical use and are commonly used in several bridges. However, the structure requires precision, is expensive, and requires maintenance such as oil inspection.
Not very popular.
【０００６】さらにオイルの替わりに高粘性を用いる構
造は公知のとおりフリーメンテナンス上好ましいが、温
度の変化による粘度の影響や桁の載荷の撓みによる微動
を吸収できない等の問題があり実用化されてないのが現
状である。Further, a structure using high viscosity instead of oil is preferable for free maintenance as is well known, but it has been put into practical use due to problems such as the influence of viscosity due to temperature change and the inability to absorb fine movement due to bending of the load on the girder. There is no present.
【０００７】[0007]
【課題を解決するための手段】この考案は上述の課題を
解決するために、橋梁に用いる密閉型シリンダ型式の緩
衝装置において、シリンダ内にダイラタンシー特性を有
するシリコン樹脂系のパテを封入するとともにピストン
の受圧面に軟質のパッキン材を取付けさらにピストンに
オリフイスを設けた構造としたことである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a sealed cylinder type shock absorber used for a bridge, in which a silicone resin-based putty having dilatancy characteristics is enclosed in a cylinder and a piston is provided. A soft packing material is attached to the pressure receiving surface, and an orifice is provided on the piston.
【０００８】[0008]
【作用】密閉シリンダ内にダイラタンシー特性を有する
シリコン樹脂系のパテを封入したので、シリンダー内の
シリコンパテは桁の温度変化による伸縮時のピストンの
ゆっくりした可動に対してはピストンとシリンダーとの
隙間及びオリフイスを通して流動するが、地震時の桁の
急激な可動に対しては弾性体のように抵抗し、ピストン
を固定する。車両の通行等の桁の撓みによる、ピストン
の小さな動きは、ピストン受圧面の軟質のパッキンが吸
収せしめる。[Function] Silicon resin-based putty with dilatancy characteristics is sealed in a closed cylinder. Flow through the orifice, but resists sudden movement of the girder during an earthquake like an elastic body, fixing the piston. The small movement of the piston due to the deflection of the girder such as the traffic of the vehicle is absorbed by the soft packing on the piston pressure receiving surface.
【０００９】その際ピストンの受圧面に取付けた軟質の
パッキンは圧縮されるので、この圧縮量だけは可動を許
容することとなる。At this time, the soft packing attached to the pressure receiving surface of the piston is compressed, so that only the amount of compression allows movement.
【００１０】[0010]
【実施例】この考案の橋梁用緩衝装置の一実施例を図に
基づき説明する。図１において、１は緩衝装置で、シリ
ンダ２内のピストン３にオリフイス４を設ける。またピ
ストン３の受圧面には軟質のパッキン材５を設けるとと
もに前記シリンダ２内にダイラタンシー特性、すなわ
ち、小さな力が徐々に加えられる場合には、普通の液体
とほとんど同様の流動性を持ちながら高い弾性特性を有
し、一方急激な力が加わった場合はほとんど固体のよう
な剛体的挙動を示す特性を有するシリコン樹脂系のパテ
６を充填する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a shock absorber, and an orifice 4 is provided on a piston 3 in a cylinder 2. In addition, a soft packing material 5 is provided on the pressure receiving surface of the piston 3 and the dilatancy characteristic, that is, when a small force is gradually applied to the cylinder 2, it has a high fluidity while having almost the same fluidity as ordinary liquid. The silicone resin-based putty 6 having elastic properties, while exhibiting a rigid behavior almost like a solid when a sudden force is applied is filled.
【００１１】ピストンロッド７の一端部７ａを支持する
連結金具８には前記シリコン系パテ６を注入する注入口
９および注入口栓９ａを設け、一方ピストンロッド７の
他端部７ｂを支持する連結金具１０の端部１０ａとシリ
ンダ２の基端部２ａ間にジャバラ１１を設け、シリンダ
２のダストシールパッキン１２とによって塵埃の侵入を
防止する。A connection fitting 8 for supporting one end 7a of the piston rod 7 is provided with an injection port 9 and an injection port plug 9a for injecting the silicon-based putty 6, while a connection for supporting the other end 7b of the piston rod 7 is provided. A bellows 11 is provided between the end 10a of the metal fitting 10 and the base end 2a of the cylinder 2, and the dust seal packing 12 of the cylinder 2 prevents dust from entering.
【００１２】なお図中１３はベアリング、１４はパッキ
ンである。In FIG. 1, reference numeral 13 denotes a bearing, and 14 denotes a packing.
【００１４】次にこの様に構成した橋梁用緩衝装置１を
既設の橋梁の補修工事に用いる例について説明する。図
２の様に橋脚１５に固定支承１６および可動支承１７を
設け、それら支承によって橋桁１８、１９を支持すると
ともに橋桁１８、１９の間隙に伸縮継手２０を設けた橋
梁に於いて、伸縮継手２０が不具合の場合に図３の様に
固定支承１６を可動支承１７に交換し、また伸縮継手は
除去して桁の間隙は閉合し、橋梁用緩衝装置を取付ける
ことによって固定支承１６によって支持されていた水平
力は緩衝装置１が代行する。Next, an example in which the bridge shock absorber 1 configured as described above is used for repairing an existing bridge will be described. As shown in FIG. 2, a fixed support 16 and a movable support 17 are provided on a pier 15, and the bridge girders 18 and 19 are supported by the support and an expansion joint 20 is provided in a gap between the bridge girders 18 and 19. In case of failure, the fixed bearing 16 is replaced by a movable bearing 17 as shown in FIG. 3, the expansion joint is removed, the gap between the girders is closed, and the bridge is supported by the fixed bearing 16 by mounting a shock absorber. The horizontal force acts on behalf of the shock absorber 1.
【００１５】また図４はゴム支承２１のみで支承された
橋桁２２の揚力を押さえるために緩衝装置１を設けた例
を示すものである。FIG. 4 shows an example in which the shock absorber 1 is provided to suppress the lift of the bridge girder 22 supported only by the rubber bearing 21.
【００１６】図５はゴム支承２１により橋脚の水平力の
分散を計った構造に補助的に緩衝装置１を取付けた例を
示すものである。FIG. 5 shows an example in which the cushioning device 1 is attached to a structure in which the horizontal force of the pier is dispersed by the rubber bearing 21.
【００１７】[0017]
【考案の効果】この考案の橋梁用緩衝装置は、密閉シリ
ンダー及びピストンはオイルダンパーの如き高精度を必
要としないのでオイルダンパーに比べて加工コストが安
く、またシリコンパテのもれがないのでメンテナンスを
必要としない。シリコンパテは温度による粘度及びダイ
ラタンシー特性の変化は小さく、物性の経年変化も小さ
い。従って長期間に亘りダンパーの機能を持続せしめる
ことが出来る。[Effect of the Invention] The bridge shock absorber of the present invention requires less processing cost than the oil damper because the closed cylinder and piston do not require high precision like an oil damper, and has no leakage of silicone putty, so maintenance is required. Do not need. Silicon putty has a small change in viscosity and dilatancy characteristics depending on temperature, and a small change over time in physical properties. Therefore, the function of the damper can be maintained for a long time.
【００１８】ピストン受圧面のパッキンの撓みにより桁
の撓みによる可動微動を吸収せしめることが出来る。The movable fine movement caused by the bending of the girder can be absorbed by the bending of the packing on the piston pressure receiving surface.
【００１９】シリンダー内のシリコンパテはピストンの
ゆっくりした可動に対しては、ピストンとシリンダーと
の隙間及びオリフィスを通して流動するが、地震時の、
桁の急激な可動に対して弾性体のように抵抗し、ピスト
ンを固定する。但し、ピストンの受圧面に取付けた軟質
のパッキンは圧縮されるので、桁の撓みによる可動に対
してはこの圧縮量だけは可動を許容する。ダンパーは可
動支承と併用するため、桁の撓みによる可動を許容する
ことが桁に作用する応力を軽減する上で重要である。構
造がシンプルで小容量の製作が有利であり補修工事向け
のダンパーの提供が可能である。The silicon putty in the cylinder flows through the gap between the piston and the cylinder and through the orifice for the slow movement of the piston.
It resists sudden movement of the girder like an elastic body and fixes the piston. However, the soft packing attached to the pressure receiving surface of the piston is compressed, so that only the amount of compression allows movement due to bending of the girder. Since the damper is used together with the movable bearing, it is important to allow the beam to move due to bending of the beam in order to reduce the stress acting on the beam. The structure is simple, small-volume production is advantageous, and a damper for repair work can be provided.
【図１】この考案の橋梁用緩衝装置の縦断面図である。FIG. 1 is a longitudinal sectional view of a bridge shock absorber of the present invention.
【図２】固定支承および可動支承で支持された既設の橋
梁を示す図である。FIG. 2 is a view showing an existing bridge supported by fixed bearings and movable bearings.
【図３】図２に示す既設の橋梁に、この考案の緩衝装置
を取り付けた状態を示す図である。FIG. 3 is a diagram showing a state in which the shock absorber of the present invention is attached to the existing bridge shown in FIG. 2;
【図４】この支承によって支持された既設の橋梁に、こ
の考案の緩衝装置を取り付けた状態を示す図である。FIG. 4 is a diagram showing a state in which the shock absorber of the present invention is attached to an existing bridge supported by the bearing.
【図５】ゴム支承によって支持された他の既設の橋梁に
この考案の緩衝装置を取り付けた状態を示す図である。FIG. 5 is a diagram showing a state in which the shock absorber of the present invention is attached to another existing bridge supported by rubber bearings.
１ 橋梁用緩衝装置 ２ シリンダー ３ ピストン ４ オリフイス ５ 軟質のパッキン材 ６ ダイラタンシー特性を有するシリコンパテ ８、１０ 連結金具 DESCRIPTION OF SYMBOLS 1 Cushioning device for bridges 2 Cylinder 3 Piston 4 Orifice 5 Soft packing material 6 Silicon putty having dilatancy characteristics 8, 10 Connection fitting
Claims (2)
装置において、シリンダー内にダイラタンシー特性を有
するシリコン系樹脂系のパテを封入するとともにピスト
ンの受圧面に軟質のパッキン材を取付けたことを特徴と
する橋梁用緩衝装置。1. A closed-cylinder type shock absorber used for a bridge, characterized in that a silicone resin-based putty having dilatancy characteristics is sealed in a cylinder and a soft packing material is attached to a pressure receiving surface of a piston. Bridge shock absorber.
を特徴とする請求項１記載の橋梁用緩衝装置。2. The bridge shock absorber according to claim 1, wherein an orifice is provided in the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5995591U JP2533330Y2 (en) | 1991-07-04 | 1991-07-04 | Bridge shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5995591U JP2533330Y2 (en) | 1991-07-04 | 1991-07-04 | Bridge shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH053315U JPH053315U (en) | 1993-01-19 |
| JP2533330Y2 true JP2533330Y2 (en) | 1997-04-23 |
Family
ID=13128083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5995591U Expired - Lifetime JP2533330Y2 (en) | 1991-07-04 | 1991-07-04 | Bridge shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2533330Y2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100426584B1 (en) * | 2000-04-24 | 2004-04-08 | 재단법인서울대학교산학협력재단 | Mechanical Seismic Load Transmitting Unit For Multi-Span Continuous Bridges |
| KR100476439B1 (en) * | 2002-03-12 | 2005-03-16 | 박대원 | Earth-quake-proof apparatus for a structure |
| KR100760212B1 (en) * | 2006-11-20 | 2007-09-20 | 매크로드 주식회사 | A steel damper for horizontal force control of bridge |
| KR100965235B1 (en) * | 2007-10-01 | 2010-06-22 | 손기택 | Damper of protection against vibration |
| JP5675556B2 (en) * | 2011-10-31 | 2015-02-25 | 千代田工業株式会社 | Water pipe bridge expansion joint breakage prevention device |
| JP5943583B2 (en) * | 2011-11-11 | 2016-07-05 | 三菱重工業株式会社 | Reinforced structure of spent fuel rack |
| JP5959846B2 (en) * | 2011-12-19 | 2016-08-02 | 三菱重工業株式会社 | Spent fuel rack support structure |
| CN111335140A (en) * | 2020-04-13 | 2020-06-26 | 中铁二院工程集团有限责任公司 | Arch structure damping device and method for deck type concrete arch bridge |
-
1991
- 1991-07-04 JP JP5995591U patent/JP2533330Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH053315U (en) | 1993-01-19 |
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