JP2002038408A - Expansion joint for bridge - Google Patents
Expansion joint for bridgeInfo
- Publication number
- JP2002038408A JP2002038408A JP2000223632A JP2000223632A JP2002038408A JP 2002038408 A JP2002038408 A JP 2002038408A JP 2000223632 A JP2000223632 A JP 2000223632A JP 2000223632 A JP2000223632 A JP 2000223632A JP 2002038408 A JP2002038408 A JP 2002038408A
- Authority
- JP
- Japan
- Prior art keywords
- finger
- bridge
- expansion joint
- deformed
- deformed portion
- 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
- Road Paving Structures (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、橋梁用伸縮継手
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion joint for a bridge.
【０００２】[0002]
【従来の技術】フィンガージョイントは、相互に噛み合
わされるように相対向する側から突出したフィンガー部
材（鋼材）により、橋軸方向の桁の移動量を吸収し且つ
車両の輪荷重を支持するものである。2. Description of the Related Art A finger joint absorbs an amount of movement of a girder in a bridge axis direction and supports a wheel load of a vehicle by finger members (steel materials) projecting from opposing sides so as to mesh with each other. It is.
【０００３】免震設計や地震時水平力分散設計の橋梁に
おいて、伸縮装置の地震時設計伸縮量は、震度法に用い
る支承の設計変位を基本に算出されている。これは地震
時保有水平耐力法（以下、保耐法という）で想定する地
震動が発生した場合に、伸縮装置が損傷しても、これが
落橋等の橋の致命的な被害を引き起こすことはないため
である。[0003] In a bridge of seismic isolation design or horizontal force distribution design in the event of an earthquake, the design expansion and contraction amount of the expansion and contraction device is calculated based on the design displacement of a bearing used in the seismic intensity method. This is because, in the event of an earthquake ground motion that is assumed by the horizontal strength method during earthquake (hereinafter referred to as the “protection law”), even if the expansion device is damaged, this will not cause fatal damage to bridges such as dropped bridges. It is.
【０００４】ところで、保耐法で想定する地震動が発生
した時には、伸縮装置が損傷することはやむを得ない
が、衝突によって桁の変位が大きく拘束される等、設計
で想定した状況と著しく異なることは避けなければなら
ない。[0004] By the way, when an earthquake motion assumed by the Conservation Act occurs, the expansion and contraction device is inevitably damaged. Must be avoided.
【０００５】しかし、フィンガージョイントの場合、保
耐法で想定する地震動が発生したときは、フィンガー部
分がぶつかり合うことになるが、必ずしも桁の変位を拘
束しないような損傷が起こるとは限らない。伸縮装置が
損傷しても、これが落橋などの橋の致命的な被害を引き
起こすことはないが、伸縮装置が損傷しなかったときは
他の部分が壊れる等大きな被害を引き起こす可能性があ
る。また、伸縮装置の地震時設計伸縮量を保耐法に用い
る支承の設計変位を基本に算出すれば、桁を拘束するよ
うなことはないが、伸縮装置が大型化する。[0005] However, in the case of a finger joint, when an earthquake motion assumed by the Conservation Act occurs, the finger portions collide with each other, but damage does not necessarily occur so as not to restrict the displacement of the girder. Even if the telescopic device is damaged, this does not cause fatal damage to a bridge such as a dropped bridge, but if the telescopic device is not damaged, it may cause serious damage such as breakage of other parts. Further, if the design expansion and contraction amount of the expansion and contraction device at the time of the earthquake is calculated based on the design displacement of the bearing used in the protection method, the girder will not be restrained, but the expansion and contraction device will be enlarged.
【０００６】[0006]
【発明が解決しようとする課題】そこで、この発明で
は、大型化せず、且つ保耐法で想定する地震動が発生し
た場合でも橋軸方向の桁の変位を拘束させない橋梁用伸
縮継手を提供することを課題とする。SUMMARY OF THE INVENTION Accordingly, the present invention provides an expansion joint for a bridge which does not increase in size and does not restrain displacement of a girder in the direction of a bridge axis even when an earthquake motion expected by the Conservation Law occurs. That is the task.
【０００７】[0007]
【課題を解決するための手段】（請求項１記載の発明）
この発明は、フィンガー形式の伸縮継手であって、フィ
ンガー部２の一部に上下に開放する大きな空間孔ｈを設
けて変形部2bを構成させており、前記フィンガー部２に
対して橋軸方向に衝撃力が加わったときには、前記空間
孔ｈが押し潰される態様で変形部2bが塑性変形するよう
になっている。 （請求項２記載の発明）この発明の橋梁用伸縮継手は、
上記請求項１記載の発明に関し、変形部2bは、環状に形
成された板材により構成されている。 （請求項３記載の発明）この発明の橋梁用伸縮継手は、
上記請求項１又は２記載の発明に関し、変形部2bは、フ
ィンガー部２の先端部に形成してある。 （請求項４記載の発明）この発明の橋梁用伸縮継手は、
上記請求項１乃至３のいずれかに記載の発明に関し、変
形部2bの変形を阻止しない態様で、前記空間孔ｈに蓋22
を被せてある。Means for Solving the Problems (Invention of Claim 1)
The present invention is a finger type expansion joint, in which a large space hole h that opens up and down is provided in a part of the finger portion 2 to form a deformed portion 2b. When an impact force is applied to the deformed portion 2b, the deformed portion 2b is plastically deformed in such a manner that the space hole h is crushed. (Invention according to claim 2) The expansion joint for a bridge of the present invention is:
According to the first aspect of the present invention, the deformed portion 2b is formed of a plate member formed in an annular shape. (Explanation of Claim 3) The expansion joint for bridges of the present invention is
According to the first or second aspect of the present invention, the deformed portion 2b is formed at the tip of the finger portion 2. (Explanation of claim 4) The expansion joint for bridges of the present invention is:
According to the invention described in any one of the above-mentioned claims 1 to 3, the cover 22 is inserted into the space hole h so as not to prevent the deformation of the deformation portion 2b.
Is covered.
【０００８】なお、上記橋梁用伸縮継手の機能について
は、以下の発明の実施の形態の欄で明らかにする。[0008] The function of the expansion joint for bridges will be clarified in the following embodiments of the invention.
【０００９】[0009]
【発明の実施の形態】以下、この発明を実施例として示
した図面に従って説明する。 （実施形態１）図１は、この発明の実施形態のフィンガ
ージョイントＪが対向する橋桁Ｈ，Ｈ相互間に設置され
た状態を示したものであり、図２は、前記フィンガージ
ョイントＪの平面図であり、図３は、前記フィンガージ
ョイントＪのフィンガー部２の斜視図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings showing embodiments. (Embodiment 1) FIG. 1 shows a state in which a finger joint J according to an embodiment of the present invention is installed between facing bridge girders H, H. FIG. 2 is a plan view of the finger joint J. FIG. 3 is a perspective view of the finger portion 2 of the finger joint J.
【００１０】このフィンガージョイントＪは、図１や図
２に示すように、主体１と複数のフィンガー部２とから
成るフィンガー板FP，FPと、各フィンガー板FPの主体１
に溶接固着された縦板P1と、前記縦板P1の下端部に溶接
固着された下板P2とから構成されており、一方のフィン
ガー板FPにおける隣合うフィンガー部２，２相互間に、
他方のフィンガー板FPのフィンガー部２を挿入するよう
にして構成されている。As shown in FIGS. 1 and 2, the finger joint J includes finger plates FP, FP each including a main body 1 and a plurality of finger portions 2, and a main body 1 of each finger plate FP.
A vertical plate P1 welded and fixed to the lower plate P2 welded and fixed to the lower end of the vertical plate P1, and between the adjacent finger portions 2 and 2 in one finger plate FP,
The finger portion 2 of the other finger plate FP is configured to be inserted.
【００１１】フィンガー部２は、図３や図４に示すよう
に、フィンガー本体2aと、前記フィンガー本体2aの先端
に溶接固着又はボルト止めされた変形部2bとから構成さ
れており、全体としては従来のものと同等の大きさにし
てある。As shown in FIGS. 3 and 4, the finger portion 2 is composed of a finger body 2a and a deformed portion 2b fixed or welded to the tip of the finger body 2a by welding. The size is the same as the conventional one.
【００１２】前記変形部2bは、図３や図４に示すよう
に、比較的大きな幅（高さ方向の幅）の板材により形成
された環状体21と、この環状体21におけるフィンガー部
先端側の辺のみと繋がっている蓋22とから構成されてお
り、前記蓋22により環状体21の空間孔ｈの上側開放部を
塞いである。ここで、この実施形態では、変形部2bの両
側面を内側に向かって凹ませてあり、これにより変形部
2bの両側面が内側に向かって塑性変形するようにしてあ
る。As shown in FIGS. 3 and 4, the deformed portion 2b includes an annular body 21 formed of a plate member having a relatively large width (width in the height direction), and a finger tip side of the annular body 21. And a lid 22 connected to only the side of the annular body 21, and the lid 22 closes the upper opening of the space hole h of the annular body 21. Here, in this embodiment, both side surfaces of the deformed portion 2b are recessed inward, thereby
Both sides of 2b are plastically deformed inward.
【００１３】なお、このように変形部2bを、高さ方向の
幅が大きな板材により形成した環状体21で構成してある
のは、鉛直方向の大きな剛性を確保すると共に橋軸方向
の力に対して変形し易くするためである。The reason why the deformed portion 2b is constituted by the annular body 21 formed of a plate having a large width in the height direction is to secure a large rigidity in the vertical direction and to reduce the force in the bridge axis direction. This is in order to facilitate deformation.
【００１４】このフィンガージョイントＪは上記のよう
な構成であるから以下に示すように機能する。 変形部2b自体が鉛直方向に剛性があるので、常時の
車両の通行は可能である。 変形部2bの上側開放部には蓋22を被せてあるから、
常時の車両の通行において車両に大きな振動が発生する
ことはない。 地震により橋桁Ｈに、許容伸縮量以上の橋軸方向の
変位が生じた場合は、変形部2bが図６に示すように塑性
変形して移動量を吸収することとなり、橋桁の変位は拘
束されない。なお、変形部2bが塑性変形した場合には蓋
22は図４から図５に示すように変位するだけであるか
ら、変形部2bが塑性変形した状態でも緊急車両等の通行
は可能である。Since the finger joint J has the above configuration, it functions as follows. Since the deformed portion 2b itself has a rigidity in the vertical direction, the vehicle can always pass through. Since the upper opening portion of the deformed portion 2b is covered with the lid 22,
No large vibrations occur in the vehicle during normal vehicle traffic. When the bridge girder H is displaced in the bridge axis direction beyond the allowable expansion and contraction amount due to the earthquake, the deformed portion 2b is plastically deformed as shown in FIG. 6 to absorb the movement amount, and the displacement of the bridge girder is not restricted. . If the deformed portion 2b is plastically deformed, the lid
Since FIG. 22 only displaces as shown in FIG. 4 and FIG. 5, even when the deformed portion 2b is plastically deformed, passage of an emergency vehicle or the like is possible.
【００１５】また、このフィンガージョイントＪでは衝
突時の衝撃吸収効果もある。 地震により許容伸縮量以上の変位が生じた場合は、
変形部2bが確実に塑性変形することとなるから、変形部
2bの取り替えで済み、補修が容易である。 （その他の実施形態）上記実施形態１の変形部2bにかえ
て、変形部2bを図７に示すように、一部が欠けた略環状
体で構成してもよい。The finger joint J also has a shock absorbing effect at the time of collision. If the earthquake causes displacement exceeding the allowable expansion and contraction amount,
Since the deformed portion 2b is surely plastically deformed, the deformed portion
Replacement of 2b is sufficient and repair is easy. (Other Embodiments) Instead of the deformed portion 2b of the first embodiment, as shown in FIG. 7, the deformed portion 2b may be formed of a substantially annular body with a part missing.
【００１６】上記実施形態１の変形部2bにかえて、図８
に示すように変形部2bを構成する腕20ｂ，20ｂをフィン
ガー本体2aの両側面に固着又はボルト止めするようにし
てもよい。Instead of the deformed portion 2b of the first embodiment, FIG.
The arms 20b, 20b constituting the deformed portion 2b may be fixed or bolted to both side surfaces of the finger body 2a as shown in FIG.
【００１７】上記実施形態１の如く変形部2bを後付けす
るのではなく、最初から図９に示すように、先端部分に
空間孔ｈを形成したフィンガー部２を製造するようにし
てもよい。Instead of retrofitting the deformed portion 2b as in the first embodiment, a finger portion 2 having a space hole h at the tip end may be manufactured as shown in FIG. 9 from the beginning.
【００１８】また、変形部2bの平面視形状は、実施形態
１の形態が理想的であるが、橋桁の変位を拘束しない形
態であれば特に実施形態１のものに限定されるものでは
ない。The shape of the deformed portion 2b in plan view is ideally the shape of the first embodiment, but is not particularly limited to that of the first embodiment as long as it does not restrict the displacement of the bridge girder.
【００１９】さらに、上記実施形態１では変形部2bを一
つ設けたものとしてあるが、これに限定されることな
く、変形部2bを、橋軸方向に複数個配設したものでもよ
いし、橋軸直角方向に複数個配設したものでもよい。Further, in the first embodiment, one deformed portion 2b is provided. However, the present invention is not limited to this, and a plurality of deformed portions 2b may be provided in the bridge axis direction. A plurality may be provided in the direction perpendicular to the bridge axis.
【００２０】[0020]
【発明の効果】この発明は上記のような構成であるから
次の効果を有する。The present invention has the following effects since it has the above-described configuration.
【００２１】上記発明の実施形態の欄の説明から明らか
なように、大型化せず、且つ保耐法で想定する地震動が
発生した場合でも橋軸方向の桁の変位を拘束させない橋
梁用伸縮継手を提供できた。As is apparent from the description of the embodiment of the present invention, an expansion joint for a bridge which does not increase in size and does not restrain displacement of a girder in the direction of a bridge axis even when an earthquake motion expected by the Conservation Law occurs. Could be provided.
【図１】この発明の実施形態の橋梁用伸縮継手の斜視
図。FIG. 1 is a perspective view of an expansion joint for a bridge according to an embodiment of the present invention.
【図２】前記橋梁用伸縮継手の平面図。FIG. 2 is a plan view of the expansion joint for a bridge.
【図３】前記橋梁用伸縮継手を構成するフィンガー部の
斜視図。FIG. 3 is a perspective view of a finger portion constituting the expansion joint for a bridge.
【図４】前記橋梁用伸縮継手の断面図。FIG. 4 is a cross-sectional view of the bridge expansion joint.
【図５】前記橋梁用伸縮継手の変形部が塑性変形したと
きの断面図。FIG. 5 is a cross-sectional view when a deformed portion of the bridge expansion joint is plastically deformed.
【図６】前記橋梁用伸縮継手の変形部が塑性変形したと
きの平面図。FIG. 6 is a plan view when a deformed portion of the expansion joint for bridge is plastically deformed.
【図７】他の実施形態の変形部の平面図。FIG. 7 is a plan view of a deformed portion according to another embodiment.
【図８】他の実施形態の変形部の平面図。FIG. 8 is a plan view of a deformed portion according to another embodiment.
【図９】他の実施形態の変形部の平面図。FIG. 9 is a plan view of a deformed portion according to another embodiment.
ｈ 空間孔 ２ フィンガー部 2a フィンガー本体 2b 変形部 21 環状体 22 蓋 h space hole 2 finger part 2a finger body 2b deformed part 21 annular body 22 lid
Claims (4)
ィンガー部（２）の一部に上下に開放する大きな空間孔
（ｈ）を設けて変形部（2b）を構成させており、前記フ
ィンガー部（２）に対して橋軸方向に衝撃力が加わった
ときには、前記空間孔（ｈ）が押し潰される態様で変形
部（2b）が塑性変形するようになっていることを特徴と
する橋梁用伸縮継手。An expansion joint of a finger type, wherein a large space hole (h) that opens up and down is provided in a part of a finger part (2) to form a deformed part (2b). (2) When an impact force is applied in the bridge axis direction to the bridge (2), the deformed portion (2b) is plastically deformed so that the space hole (h) is crushed. Expansion joints.
により構成されていることを特徴とする請求項１記載の
橋梁用伸縮継手。2. The expansion joint for a bridge according to claim 1, wherein the deformation portion (2b) is formed of a plate formed in an annular shape.
先端部に形成してあることを特徴とする請求項１又は２
記載の橋梁用伸縮継手。3. The deformable part (2b) is formed at the tip of the finger part (2).
The expansion joint for bridges described.
で、前記空間孔（ｈ）に蓋（22）を被せてあることを特
徴とする請求項１乃至３のいずれかに記載の橋梁用伸縮
継手。4. The bridge according to claim 1, wherein the space hole (h) is covered with a lid (22) in such a manner that deformation of the deformation portion (2b) is not prevented. Expansion joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000223632A JP3635367B2 (en) | 2000-07-25 | 2000-07-25 | Expansion joint for bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000223632A JP3635367B2 (en) | 2000-07-25 | 2000-07-25 | Expansion joint for bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002038408A true JP2002038408A (en) | 2002-02-06 |
| JP3635367B2 JP3635367B2 (en) | 2005-04-06 |
Family
ID=18717694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000223632A Expired - Fee Related JP3635367B2 (en) | 2000-07-25 | 2000-07-25 | Expansion joint for bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3635367B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015068153A (en) * | 2013-10-01 | 2015-04-13 | 日本車輌製造株式会社 | Expansion device for bridge |
-
2000
- 2000-07-25 JP JP2000223632A patent/JP3635367B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015068153A (en) * | 2013-10-01 | 2015-04-13 | 日本車輌製造株式会社 | Expansion device for bridge |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3635367B2 (en) | 2005-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100635098B1 (en) | Girder bridge protection device using sacrifice means | |
| JP6054913B2 (en) | Elastic-plastic hysteretic damper | |
| JP3158798U (en) | Integrated device for falling bridge prevention structure and displacement limiting structure | |
| JP5132503B2 (en) | Seismic structure and building | |
| KR100689294B1 (en) | Cab support vehicle frame structure preventing welding strain for construction machinery | |
| JP5683326B2 (en) | Displacement limiting device installation method, displacement limiting device, and bridge girder displacement limiting structure | |
| JP2002038408A (en) | Expansion joint for bridge | |
| JP3772415B2 (en) | Building vibration control structure | |
| JPH09296625A (en) | Building structure having earthquake-resistant construction | |
| JP2909066B1 (en) | Repair method of existing bridge bearing device | |
| JP2602888Y2 (en) | Elasto-plastic damper | |
| KR101300687B1 (en) | Installation structure of lining board | |
| KR102194241B1 (en) | Damper of steel pannel type for preventing of buckling | |
| JP5705171B2 (en) | Protective fence for vehicle | |
| KR20160109284A (en) | Elasticity support for bridge | |
| JP4798625B2 (en) | Movement restriction device | |
| JP3159643B2 (en) | Seismic isolation bridge prevention device | |
| JP2968469B2 (en) | Articulated seismic isolation bridge prevention device | |
| JP6162457B2 (en) | Displacement limiting device | |
| WO2022209066A1 (en) | Antiseismic reinforcement apparatus for bridges | |
| JP2000096503A (en) | Expansion device for bridge | |
| US20220333369A1 (en) | Structural fuses and connection systems including the same | |
| KR20210041813A (en) | Girder Joint | |
| JP4077273B2 (en) | Structure support with movement restriction mechanism and movement restriction mechanism in structure system | |
| JP7477471B2 (en) | Protection Worker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040223 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040423 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040705 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040903 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20041115 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20041214 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090114 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100114 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110114 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120114 Year of fee payment: 7 |
|
| LAPS | Cancellation because of no payment of annual fees |