JP2001131915A - Impact buffering member for connection type bridge collapse preventing device and connection type bridge collapse preventing device - Google Patents
Impact buffering member for connection type bridge collapse preventing device and connection type bridge collapse preventing deviceInfo
- Publication number
- JP2001131915A JP2001131915A JP31482899A JP31482899A JP2001131915A JP 2001131915 A JP2001131915 A JP 2001131915A JP 31482899 A JP31482899 A JP 31482899A JP 31482899 A JP31482899 A JP 31482899A JP 2001131915 A JP2001131915 A JP 2001131915A
- Authority
- JP
- Japan
- Prior art keywords
- connection
- shock absorbing
- prevention device
- absorbing member
- shock
- 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.)
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Links
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、特に、橋桁と、連
結すべき橋桁または橋台に固定されて、橋桁が橋脚また
は橋台から落橋するのを防止する連結式落橋防止装置に
用いられる衝撃緩衝部材およびこの衝撃緩衝部材を備え
た連結式落橋防止装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly relates to an impact damping member used for a bridge type bridge prevention device which is fixed to a bridge girder and a bridge girder or abutment to be connected, and which prevents the bridge girder from falling off a pier or abutment. And a connection type fall prevention device provided with the shock absorbing member.
【０００２】[0002]
【従来の技術】従来より、落橋を防止するために落橋防
止装置が用いられ、種々の構成のものが開発されている
が、その一つに、連結式落橋防止装置が提案されてい
る。2. Description of the Related Art Hitherto, a bridge prevention device has been used to prevent a bridge from falling, and various structures have been developed. One of them is a connection type bridge prevention device.
【０００３】この連結式落橋防止装置は、図６に示すよ
うに、各橋桁１のブラケット５に設けられる緩衝装置２
と、これらの緩衝装置２を連結するＰＣ鋼材からなる連
結材３とを備え、橋桁１と橋桁１とを連結して衝撃力を
緩和し、橋脚４から橋桁１が落下することを防止するも
のである。図示例では、橋桁１と橋桁１との間に設置し
た例を示してある。そして、前記緩衝装置２に用いられ
る伸縮部材として、コイルバネが一般的に用いられてい
る。[0003] As shown in FIG. 6, this connecting type fall prevention device has a shock absorber 2 provided on a bracket 5 of each bridge girder 1.
And a connecting member 3 made of PC steel for connecting these shock absorbers 2, connecting the bridge girder 1 and the bridge girder 1 to reduce the impact force and prevent the bridge girder 1 from dropping from the pier 4. It is. In the illustrated example, an example in which the bridge girder 1 is installed between the bridge girder 1 is shown. A coil spring is generally used as a telescopic member used in the shock absorber 2.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前述し
た従来の落橋防止装置にあっては、橋桁１の変位が、コ
イルバネの許容縮み量に達した際に、装置に衝撃力が加
わってしまうという問題点がある。また、前述したコイ
ルバネは、バネ定数が一定であり、撓み量の大小も自由
に選択できるが、形状・重量ともに大きく設置作業が煩
雑になってしまうといった問題点も有している。However, in the above-mentioned conventional bridge prevention device, when the displacement of the bridge girder 1 reaches the allowable shrinkage amount of the coil spring, an impact force is applied to the device. There is a point. Further, the above-described coil spring has a constant spring constant and can freely select the amount of deflection, but also has a problem in that the shape and weight are large and the installation work is complicated.
【０００５】本発明は、このような従来の問題点に鑑み
てなされたもので、橋桁等の変位時における衝撃を緩和
する連結式落橋防止装置用衝撃緩衝部材を提供するこ
と、また、前述した衝撃緩和機能を維持しつつ、形状や
重量が小さく設置作業を簡便なものとする連結式落橋防
止装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and provides a shock-absorbing member for a joint-type fall-preventing device for reducing an impact when a bridge girder or the like is displaced. An object of the present invention is to provide a connection-type bridge prevention device that has a small shape and weight and facilitates installation work while maintaining a shock absorbing function.
【０００６】[0006]
【課題を解決するための手段】本発明の請求項１に記載
の連結式落橋防止装置用衝撃緩衝部材は、橋桁と、橋桁
または橋台とを連結する連結材と、この連結材の各端部
に固定される緩衝装置と、この緩衝装置を前記連結材の
端部に固定する固定治具と、この固定治具と一体的に移
動させられる支圧板を備えた連結式落橋防止装置に用い
られる衝撃緩衝部材であって、弾性材によって形成さ
れ、前記支圧板と対峙する位置に設けられて、前記連結
材が貫通させられるとともに、前記支圧板が所定距離移
動させられた際に、この支圧板が当接させられるように
なされていることを特徴とする。本発明の請求項２に記
載の連結式落橋防止装置用衝撃緩衝部材は、請求項１に
記載の前記衝撃緩衝部材の、前記支圧板との対向面に、
円弧状の溝が略同心円状に形成されていることを特徴と
する。本発明の請求項３に記載の連結式落橋防止装置用
衝撃緩衝部材は、請求項１または請求項２に記載の前記
衝撃緩衝部材が、硬質材によって形成され、前記連結材
が貫通させられる座板に取り付けられていることを特徴
とする。本発明の請求項４に記載の連結式落橋防止装置
用衝撃緩衝部材は、請求項３に記載の前記衝撃緩衝部材
および座板の、前記連結材が貫通させられる部位の内面
に、摩擦軽減材が被覆されていることを特徴とする。本
発明の請求項５に記載の連結式落橋防止装置用衝撃緩衝
部材は、請求項３または請求項４に記載の前記座板に
は、前記連結材を案内するガイドが設けられていること
を特徴とする。本発明の請求項６に記載の連結式落橋防
止装置用衝撃緩衝部材は、請求項５に記載の前記ガイド
が円筒状に形成されていることを特徴とする。本発明の
請求項７に記載の連結式落橋防止装置用衝撃緩衝部材
は、請求項５に記載の前記ガイドが、前記連結材をその
両側部から底部にかけて覆うように略円弧状に形成され
ていることを特徴とする。本発明の請求項８に記載の連
結式落橋防止装置は、請求項１ないし請求項７の何れか
に記載の連結式落橋防止装置用衝撃緩衝部材が装着され
ていることを特徴とする。本発明の請求項９に記載の連
結式落橋防止装置は、橋桁と、橋桁または橋台とを連結
する連結材と、この連結材の各端部に固定される緩衝装
置と、該緩衝装置を前記連結材の端部に固定する固定治
具とを備え、前記緩衝装置は、前記連結材の端部が固定
されるインナーパイプと、このインナーパイプに挿通さ
れ、前記橋桁あるいは橋台に固定されるアウターパイプ
と、このアウターパイプの内側面と前記インナーパイプ
の外側面とに固定されたゴムとを有し、かつ、前記イン
ナーパイプに支圧板が設けられているとともに、この支
圧板と対峙する位置に、前記請求項１ないし請求項７の
何れかに記載の連結式落橋防止装置用衝撃緩衝部材が設
けられていることを特徴とする。According to a first aspect of the present invention, there is provided a shock-absorbing member for a bridge-type bridge prevention device, comprising: a bridge girder; a connecting member for connecting the bridge girder or abutment; and each end of the connecting member. , A fixing jig for fixing the buffering device to the end of the connecting member, and a connection type fall prevention device including a supporting plate that is integrally moved with the fixing jig. A shock-absorbing member, which is formed of an elastic material and is provided at a position facing the support plate so that the connection member is penetrated and the support plate is moved by a predetermined distance; Are made to contact with each other. The shock-absorbing member for a connection-type anti-bridging device according to claim 2 of the present invention is provided on the surface of the shock-absorbing member according to claim 1 facing the supporting plate.
An arcuate groove is formed substantially concentrically. According to a third aspect of the present invention, there is provided a shock-absorbing member for a connection-type anti-bridging device according to the first or second aspect, wherein the impact-absorbing member according to the first or second aspect is formed of a hard material, and the connection material is penetrated therethrough. It is characterized by being attached to a plate. According to a fourth aspect of the present invention, there is provided a shock absorbing member for a connection-type anti-bridging device according to the third aspect, wherein the shock absorbing member and the seat plate according to the third aspect have a friction reducing material on an inner surface of a portion through which the connecting material is penetrated. Is coated. According to a fifth aspect of the present invention, in the shock absorbing member for a connection-type fall prevention device, the guide plate for guiding the connecting member is provided on the seat plate according to the third or fourth aspect. Features. According to a sixth aspect of the present invention, there is provided an impact buffering member for an articulated bridge prevention device, wherein the guide according to the fifth aspect is formed in a cylindrical shape. According to a seventh aspect of the present invention, there is provided a shock absorbing member for a connection-type fall prevention device, wherein the guide according to the fifth aspect is formed in a substantially arc shape so as to cover the connecting member from both sides to the bottom. It is characterized by being. According to an eighth aspect of the present invention, there is provided an articulated bridge prevention device, wherein the shock absorbing member for an articulated bridge prevention device according to any one of the first to seventh aspects is mounted. The connection type fall prevention device according to claim 9 of the present invention includes a bridge girder, a connecting member for connecting the bridge girder or the abutment, a shock absorber fixed to each end of the connection material, and the shock absorber. A fixing jig for fixing to an end of the connecting member, wherein the buffering device includes an inner pipe to which the end of the connecting member is fixed, and an outer to be inserted through the inner pipe and fixed to the bridge girder or abutment. A pipe, having rubber fixed to the inner surface of the outer pipe and the outer surface of the inner pipe, and a supporting plate provided on the inner pipe, at a position facing the supporting plate. The present invention is characterized in that the shock-absorbing member for a connection-type fall prevention device according to any one of claims 1 to 7 is provided.
【０００７】[0007]
【発明の実施の形態】以下、本発明の一実施形態を、図
１ないし図３に基づいて詳細に説明する。本実施形態に
係わる連結式落橋防止装置は、図６と同様に、橋桁１と
橋桁１との間に設けた例を示し、一方の橋桁側のみにつ
いて図示するが、他方の橋桁側においても対称的に配設
されるものである。また、以下の説明中、図６と共通す
る部分については同一符号を用いて説明を簡略化する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. The connection type fall prevention device according to this embodiment shows an example provided between the bridge girder 1 and the bridge girder 1 as in FIG. 6, and only one bridge girder side is shown, but the other bridge girder side is also symmetrical. It is arranged in a way. In the following description, portions common to FIG. 6 will be denoted by the same reference numerals and description thereof will be simplified.
【０００８】まず、連結式落橋防止装置について説明す
る。本実施形態に係わる連結式落橋防止装置は、橋桁と
橋桁とを連結する連結材１１と、該連結材１１の各端部
に固定される緩衝装置１２と、該緩衝装置１２を前記連
結材１１の端部に固定する固定治具１３とを備え、前記
緩衝装置１２は、前記連結材１１に嵌合させられるとと
もに、前記固定治具１３を介して前記連結材１１に係合
させられるインナーパイプ１４と、このインナーパイプ
１４に同軸上に被嵌されるとともに、前記橋桁に取り付
けられたブラケット１０に係合させられるアウターパイ
プ１５と、このアウターパイプ１５と前記インナーパイ
プ１４との間に配設され、これらのアウターパイプ１５
とインナーパイプ１４とに固定されたゴム１６とによっ
て構成され、前記アウターパイプ１５とインナーパイプ
１４との軸方向の相対移動により、前記ゴムが剪断方向
へ弾性変形させられることにより、緩衝作用を生じるよ
うになされている。[0008] First, a connection type fall prevention device will be described. The connecting type bridge prevention device according to the present embodiment includes a connecting member 11 for connecting a bridge girder to a bridge girder, a shock absorber 12 fixed to each end of the connecting member 11, and the shock absorbing device 12. An inner pipe that is fitted to the connecting member 11 and is engaged with the connecting member 11 through the fixing jig 13. 14, an outer pipe 15 coaxially fitted to the inner pipe 14 and engaged with a bracket 10 attached to the bridge girder, and an outer pipe 15 disposed between the outer pipe 15 and the inner pipe 14. And these outer pipes 15
And the rubber 16 fixed to the inner pipe 14. The relative movement of the outer pipe 15 and the inner pipe 14 in the axial direction causes the rubber to be elastically deformed in the shearing direction, thereby producing a cushioning action. It has been made like that.
【０００９】さらに詳述すれば、前記アウターパイプ１
５とブラケット１０との間には、スペーサ１７が介装さ
れており、このスペーサ１７は、前記アウターパイプ１
５と同一の断面形状となされている。More specifically, the outer pipe 1
A spacer 17 is interposed between the outer pipe 1 and the bracket 10.
5 has the same cross-sectional shape.
【００１０】前記連結材１１は、前記ブラケット１０の
端面から前記インナーパイプ１４を貫通するように設け
られており、その両端部にはネジ部１１ａが形成され、
このネジ部１１ａに螺着される固定治具１３としてのダ
ブルナットを介して、受圧板１９が装着されており、こ
の受圧板１９が、前記インナーパイプ１４の端面に当接
させられることによって、前記連結材１１がインナーパ
イプ１４に係合させられている。The connecting member 11 is provided so as to penetrate the inner pipe 14 from the end face of the bracket 10, and threaded portions 11 a are formed at both ends thereof.
A pressure receiving plate 19 is mounted via a double nut as a fixing jig 13 which is screwed to the screw portion 11a, and the pressure receiving plate 19 is brought into contact with the end surface of the inner pipe 14 by The connecting member 11 is engaged with the inner pipe 14.
【００１１】前記インナーパイプ１４の端部には、この
インナーパイプ１４が前記アウターパイプ１５に対して
所定距離相対移動させられた際に、このインナーパイプ
１４とともに移動させられる支圧板２１が装着されてい
る。At the end of the inner pipe 14, a supporting plate 21 which is moved together with the inner pipe 14 when the inner pipe 14 is moved relative to the outer pipe 15 by a predetermined distance is mounted. I have.
【００１２】また、前記スペーサ１７の端部には、前記
連結材１１が貫通させられるとともに、前記支圧板２１
に対峙させられた衝撃緩衝部材２０が設けられている。
この衝撃緩衝部材２０は弾性材によって構成されてお
り、図３に示すように、円盤状に形成され、その中心部
に、前記連結材１１が挿通される貫通孔が形成されてい
る。The connecting member 11 is penetrated through the end of the spacer 17 and the supporting plate 21
Is provided.
The shock absorbing member 20 is made of an elastic material, and is formed in a disk shape as shown in FIG. 3, and has a through hole formed in the center thereof, through which the connecting member 11 is inserted.
【００１３】さらに、前記衝撃緩衝部材２０は、図３に
示すように、矩形板状の座板２４に加硫接着等の手段に
よって一体に取り付けられ、前記座板２４が前記スペー
サ１７に、その端部を覆うように取り付けられることに
より、図１および図２に示すように、前記衝撃緩衝部材
２０が、前記支圧板２１に対峙するように保持されるよ
うになっている。Further, as shown in FIG. 3, the shock absorbing member 20 is integrally attached to a rectangular plate-shaped seat plate 24 by means such as vulcanization bonding, and the seat plate 24 is attached to the spacer 17. 1 and 2, the shock absorbing member 20 is held so as to face the supporting plate 21 as shown in FIGS.
【００１４】また、前記座板２４の中心部には、前記連
結材１１を案内する筒状のガイド２５が形成されて、前
記衝撃緩衝部材２０に形成された貫通孔へ連通させられ
ている。そして、前記ガイド２５の先端部の内周には、
外方へ向かって漸次幅広となる傾斜面２６が形成されて
いる。この傾斜面２６は、橋桁の温度変化に伴う伸縮量
を考慮して、通常、前記連結材１１を撓ませておくこと
が行われており、この撓みによって、前記連結材１１と
座板２４との接触がなされるが、この接触部分において
連結材１１を面によって支持し、これによって前記連結
材１１への応力集中を防止して、この連結材１１の折損
を防止するために採られた構成である。A cylindrical guide 25 for guiding the connecting member 11 is formed at the center of the seat plate 24 and communicates with a through hole formed in the shock absorbing member 20. Then, on the inner periphery of the distal end of the guide 25,
An inclined surface 26 that gradually widens outward is formed. In consideration of the amount of expansion and contraction due to the temperature change of the bridge girder, the inclined surface 26 is usually bent so that the connecting member 11 is bent, and this bending causes the connecting member 11 and the seat plate 24 to be bent. The connecting member 11 is supported by a surface at the contact portion, thereby preventing stress concentration on the connecting member 11 and preventing the connecting member 11 from being broken. It is.
【００１５】一方、前記衝撃緩衝部材２０および座板２
４の、前記連結材１１が貫通させられる部位の内面に
は、テフロン等の摩擦軽減材からなる被覆２７が施され
ている。On the other hand, the shock absorbing member 20 and the seat plate 2
4, a coating 27 made of a friction reducing material such as Teflon is applied to an inner surface of a portion where the connecting material 11 is penetrated.
【００１６】そして、前記座板２４が前記ブラケット１
０にボルト等によって固定されることにより、装置全体
が前記ブラケット１０に装着されるようになっている。The seat plate 24 is mounted on the bracket 1
The entire device is mounted on the bracket 10 by being fixed to the bracket 10 with bolts or the like.
【００１７】また、前記ゴム１６は、環状に形成されて
いるとともに、その両端部に略円弧状の窪み２３が形成
されており、前記インナーパイプ１４とアウターパイプ
１５の軸方向への相対移動に際して、剪断変形が容易と
なるようになされている。The rubber 16 is formed in an annular shape, and has substantially arc-shaped depressions 23 at both ends thereof, so that the inner pipe 14 and the outer pipe 15 can be moved relative to each other in the axial direction. In addition, the shear deformation is facilitated.
【００１８】このように構成された本実施形態に係わる
連結式落橋防止装置は、地震等による振動が加わって、
橋桁どうしが離間する方向に相対移動すると、これに伴
って、前記インナーパイプ１４が、連結材１１により、
アウターパイプ１５に対してその軸方向に相対移動させ
られる。The thus constructed bridge-type bridge prevention device according to the present embodiment is subjected to vibrations caused by an earthquake or the like.
When the bridge girders relatively move in the direction in which they are separated from each other, the inner pipe 14 is accordingly moved by the connecting member 11 by the connecting member 11.
It is relatively moved in the axial direction with respect to the outer pipe 15.
【００１９】このようなインナーパイプ１４とアウター
パイプ１５との相対移動により、両者間に介装されてい
るゴム１６が、図２に示すように、剪断方向に弾性変形
させられ、これによって、前記橋桁の振動が吸収され
て、この橋桁の落橋が防止される。さらに、大きな振動
が加わった場合にあっては、インナーパイプ１４の端部
に装着されている支圧板２１が、座板２４を介してブラ
ケット１０に固定されている衝撃緩衝部材２０に当接さ
せられて、この衝撃緩衝部材２０が弾性変形させられる
ことにより、前述した振動が衝撃緩衝部材２０によって
さらに吸収されて、前記橋桁の落橋が防止される。Due to the relative movement of the inner pipe 14 and the outer pipe 15, the rubber 16 interposed therebetween is elastically deformed in the shearing direction as shown in FIG. The vibration of the bridge girder is absorbed, and the bridge girder is prevented from falling. Further, when a large vibration is applied, the support plate 21 attached to the end of the inner pipe 14 is brought into contact with the shock absorbing member 20 fixed to the bracket 10 via the seat plate 24. Then, when the shock buffering member 20 is elastically deformed, the above-described vibration is further absorbed by the shock buffering member 20 and the bridge girder is prevented from falling.
【００２０】そして、緩衝装置１２をインナーパイプ１
４とアウターパイプ１５、および、これらの間に介装さ
れたゴム１６とによって構成したことにより、コイルバ
ネに比して構造が簡素化されるとともに、重量が大幅に
軽減される。この結果、施工が簡便なものとなる。Then, the shock absorber 12 is connected to the inner pipe 1.
4 and the outer pipe 15 and the rubber 16 interposed therebetween, the structure is simplified as compared with the coil spring, and the weight is greatly reduced. As a result, the construction becomes simple.
【００２１】なお、前述した実施形態において示した各
構成部材の諸形状や寸法等は一例であって、設計要求等
に基づき種々変更可能である。たとえば、前記衝撃緩衝
部材２０の形状を単純な円盤形状とした例について示し
たが、これに代えて、図４に示すように、前記衝撃緩衝
部材２０の、前記支圧板２１に対向する面に、円弧状の
溝２８を略同心円状に形成することも可能である。この
溝２８を設けることにより、前記衝撃緩衝部材２０の弾
性係数を調整して、その緩衝機能を調整することが可能
となる。また、前記実施形態においては鋼桁について示
したが、コンクリート桁への適用ももちろん可能であ
る。さらに、前記ガイド２５を筒状に形成した例につて
示したが、連結材１１の両側部および底部を覆うよう
に、略円弧状断面とすることも可能である（図５参
照）。The various shapes, dimensions, and the like of the components shown in the above-described embodiment are merely examples, and can be variously changed based on design requirements and the like. For example, although the example in which the shape of the shock buffering member 20 is a simple disk shape is shown, instead of this, as shown in FIG. It is also possible to form the arc-shaped groove 28 substantially concentrically. By providing the groove 28, it becomes possible to adjust the elastic coefficient of the shock absorbing member 20 and adjust its shock absorbing function. In the above embodiment, the steel girder has been described, but the present invention can be applied to a concrete girder. Further, although an example in which the guide 25 is formed in a cylindrical shape is shown, a substantially arc-shaped cross section may be used so as to cover both sides and the bottom of the connecting member 11 (see FIG. 5).
【００２２】[0022]
【発明の効果】本発明は以上のように構成されているの
で、大きな振動が加わった場合にあっても、支圧板と衝
撃緩衝部材との当接によって、前記衝撃緩衝部材が弾性
変形させられることにより、前述した振動が衝撃緩衝部
材によって吸収されて、橋桁の落橋が防止される。ま
た、緩衝装置をインナーパイプとアウターパイプ、およ
び、これらの間に介装されたゴムとによって構成するこ
とにより、前述した機能を確保しつつ、構造が簡素で、
かつ、重量が軽減された連結式落橋防止装置を提供する
ことができ、その施工作業を簡便なものとすることがで
きる。According to the present invention, the shock absorbing member is elastically deformed by the contact between the support plate and the shock absorbing member even when a large vibration is applied. Thereby, the above-described vibration is absorbed by the shock absorbing member, and the bridge girder is prevented from falling. In addition, by constituting the shock absorber with the inner pipe and the outer pipe, and the rubber interposed therebetween, the structure is simple while securing the above-described functions,
In addition, it is possible to provide an articulated bridge prevention device with reduced weight, and the construction work can be simplified.
【図１】本発明の一実施形態を示す一部を破断した正面
図である。FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.
【図２】本発明の一実施形態を示すもので、変形状態を
示す縦断面正面図である。FIG. 2 shows one embodiment of the present invention, and is a longitudinal sectional front view showing a deformed state.
【図３】本発明の一実施形態に係わる衝撃緩衝部材を示
すもので、（ａ）は側面図、（ｂ）は縦断面図である。3A and 3B show an impact buffering member according to an embodiment of the present invention, wherein FIG. 3A is a side view and FIG. 3B is a longitudinal sectional view.
【図４】本発明の他の実施形態に係わる衝撃緩衝部材を
示すもので、（ａ）は側面図、（ｂ）は縦断面図であ
る。FIGS. 4A and 4B show a shock absorbing member according to another embodiment of the present invention, wherein FIG. 4A is a side view and FIG.
【図５】本発明の変形例を示すもので、（ａ）は縦断面
図、（ｂ）は、（ａ）の右側面図である。5A and 5B show a modified example of the present invention, in which FIG. 5A is a longitudinal sectional view, and FIG. 5B is a right side view of FIG.
【図６】一従来例を示す要部の縦断面図である。FIG. 6 is a longitudinal sectional view of a main part showing one conventional example.
１ 橋桁 ２ 緩衝装置 ３ 連結材 ４ 橋脚 ５ ブラケット １０ ブラケット １１ 連結材 １１ａ ネジ部 １２ 緩衝装置 １３ 固定治具 １４ インナーパイプ １５ アウターパイプ １６ ゴム １７ スペーサ １９ 受圧板 ２０ 衝撃緩衝部材 ２１ 支圧板 ２３ 窪み ２４ 座板 ２５ ガイド ２６ 傾斜面 ２７ 被覆（摩擦軽減材） ２８ 溝 DESCRIPTION OF SYMBOLS 1 Bridge girder 2 Buffer device 3 Connecting material 4 Bridge pier 5 Bracket 10 Bracket 11 Connecting material 11a Screw part 12 Buffer device 13 Fixing jig 14 Inner pipe 15 Outer pipe 16 Rubber 17 Spacer 19 Pressure receiving plate 20 Impact buffer member 21 Pressure plate 23 Depression 24 Seat plate 25 Guide 26 Inclined surface 27 Coating (friction reducing material) 28 Groove
Claims (9)
結材と、この連結材の各端部に固定される緩衝装置と、
この緩衝装置を前記連結材の端部に固定する固定治具
と、この固定治具と一体的に移動させられる支圧板を備
えた連結式落橋防止装置に用いられる衝撃緩衝部材であ
って、弾性材によって形成され、前記支圧板と対峙する
位置に設けられて、前記連結材が貫通させられるととも
に、前記支圧板が所定距離移動させられた際に、この支
圧板が当接させられるようになされていることを特徴と
する連結式落橋防止装置用衝撃緩衝部材。1. A bridge girder, a connecting member for connecting the bridge girder or the abutment, a shock absorber fixed to each end of the connecting member,
A shock-absorbing member used for a connection-type bridge prevention device including a fixing jig for fixing the shock-absorbing device to an end portion of the connecting member, and a support plate that is integrally moved with the fixing jig. The support member is formed at a position facing the support plate, the connecting member is penetrated, and when the support plate is moved a predetermined distance, the support plate is brought into contact with the support member. A shock absorbing member for a connection-type fall prevention device, comprising:
向面に、円弧状の溝が略同心円状に形成されていること
を特徴とする請求項１に記載の連結式落橋防止装置用衝
撃緩衝部材。2. The connection type bridge prevention device according to claim 1, wherein an arc-shaped groove is formed substantially concentrically on a surface of the shock absorbing member facing the support plate. Shock absorbing member.
成され、前記連結材が貫通させられる座板に取り付けら
れていることを特徴とする請求項１または請求項２に記
載の連結式落橋防止装置用衝撃緩衝部材。3. The connection type bridge prevention device according to claim 1, wherein the shock absorbing member is formed of a hard material, and is attached to a seat plate through which the connection member is penetrated. Shock absorbing member for equipment.
結材が貫通させられる部位の内面に、摩擦軽減材が被覆
されていることを特徴とする請求項３に記載の連結式落
橋防止装置用衝撃緩衝部材。4. A connection-type bridge prevention device according to claim 3, wherein a friction reducing material is coated on an inner surface of a portion of the impact buffer member and the seat plate through which the connection material is penetrated. For shock absorbing member.
イドが設けられていることを特徴とする請求項３または
請求項４に記載の連結式落橋防止装置用衝撃緩衝部材。5. The shock absorbing member according to claim 3, wherein a guide for guiding the connecting member is provided on the seat plate.
とを特徴とする請求項５に記載の連結式落橋防止装置用
衝撃緩衝部材。6. The shock absorbing member according to claim 5, wherein the guide is formed in a cylindrical shape.
から底部にかけて覆うように略円弧状に形成されている
ことを特徴とする請求項５に記載の連結式落橋防止装置
用衝撃緩衝部材。7. The shock absorbing member according to claim 5, wherein the guide is formed in a substantially arc shape so as to cover the connecting member from both sides to the bottom. .
記載の連結式落橋防止装置用衝撃緩衝部材が装着されて
いることを特徴とする連結式落橋防止装置。8. A connection-type bridge prevention device, comprising the shock-absorbing member for a connection-type bridge prevention device according to any one of claims 1 to 7.
結材と、この連結材の各端部に固定される緩衝装置と、
該緩衝装置を前記連結材の端部に固定する固定治具とを
備え、前記緩衝装置は、前記連結材の端部が固定される
インナーパイプと、このインナーパイプに挿通され、前
記橋桁あるいは橋台に固定されるアウターパイプと、こ
のアウターパイプの内側面と前記インナーパイプの外側
面とに固定されたゴムとを有し、かつ、前記インナーパ
イプに支圧板が設けられているとともに、この支圧板と
対峙する位置に、前記請求項１ないし請求項７の何れか
に記載の連結式落橋防止装置用衝撃緩衝部材が設けられ
ていることを特徴とする連結式落橋防止装置。9. A bridge girder, a connecting member for connecting the bridge girder or the abutment, a shock absorber fixed to each end of the connecting member,
A fixing jig for fixing the shock absorbing device to an end of the connecting member, wherein the shock absorbing device includes an inner pipe to which an end of the connecting member is fixed, and an inner pipe which is inserted through the inner pipe to form the bridge girder or abutment. An outer pipe fixed to the outer pipe, rubber fixed to an inner surface of the outer pipe and an outer surface of the inner pipe, and a support plate provided on the inner pipe, and the support plate A connection type fall prevention device, wherein the shock absorbing member for a connection type fall prevention device according to any one of claims 1 to 7 is provided at a position facing the connection type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31482899A JP3333480B2 (en) | 1999-11-05 | 1999-11-05 | Shock buffering member for articulated bridge prevention device and articulated bridge prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31482899A JP3333480B2 (en) | 1999-11-05 | 1999-11-05 | Shock buffering member for articulated bridge prevention device and articulated bridge prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001131915A true JP2001131915A (en) | 2001-05-15 |
| JP3333480B2 JP3333480B2 (en) | 2002-10-15 |
Family
ID=18058096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31482899A Expired - Fee Related JP3333480B2 (en) | 1999-11-05 | 1999-11-05 | Shock buffering member for articulated bridge prevention device and articulated bridge prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3333480B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009155932A (en) * | 2007-12-27 | 2009-07-16 | Shinko Wire Co Ltd | Fall prevention device |
| CN111705628A (en) * | 2020-06-19 | 2020-09-25 | 山西省交通规划勘察设计院有限公司 | Combined supporting structure for transverse earthquake resistance of three-span bridge |
-
1999
- 1999-11-05 JP JP31482899A patent/JP3333480B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009155932A (en) * | 2007-12-27 | 2009-07-16 | Shinko Wire Co Ltd | Fall prevention device |
| CN111705628A (en) * | 2020-06-19 | 2020-09-25 | 山西省交通规划勘察设计院有限公司 | Combined supporting structure for transverse earthquake resistance of three-span bridge |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3333480B2 (en) | 2002-10-15 |
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