JP3912493B2 - Road bridge telescopic device - Google Patents

Road bridge telescopic device Download PDF

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Publication number
JP3912493B2
JP3912493B2 JP2001395983A JP2001395983A JP3912493B2 JP 3912493 B2 JP3912493 B2 JP 3912493B2 JP 2001395983 A JP2001395983 A JP 2001395983A JP 2001395983 A JP2001395983 A JP 2001395983A JP 3912493 B2 JP3912493 B2 JP 3912493B2
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Japan
Prior art keywords
bridge
contraction
expansion
road bridge
block
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Expired - Fee Related
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JP2001395983A
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Japanese (ja)
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JP2003193411A (en
Inventor
哲 島ノ江
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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Priority to JP2001395983A priority Critical patent/JP3912493B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、道路橋伸縮装置に関し、更に詳しくは、メンテナンスにかかるコストを低減するようにした道路橋伸縮装置に関する。
【0002】
【従来の技術】
従来、道路橋の両橋桁間に設置される道路橋伸縮装置として、ゴム盤内の上部と下部にそれぞれ道路橋幅方向に延在する複数の補強用鋼板を埋設し、そのゴム盤の補強用鋼板間の上下面に道路橋幅方向に延びる溝部を形成したものが一般的に知られている。このようなゴム盤の伸縮部を有する道路橋伸縮装置は、季節による温度変化により両橋桁間の距離が縮小した際に、ゴム盤の中央部側が盛り上がり、その上を車両が走行すると、その盛り上がり部分が押し下げられて橋桁を叩くため、騒音が発生するという問題があった。
【0003】
そこで、上記対策として、近年、両橋桁間に荷重支持部を架設し、その荷重支持部上に伸縮部の盛り上がる中央部側を固着し、荷重支持部と伸縮部とを一体構造にした道路橋伸縮装置が提案されている。荷重支持部は、剪断方向の力が作用した際に変形する両支承体上に荷重支持鋼板を架設した構成になっており、この荷重支持鋼板に伸縮部を固設して盛り上がりを防止するようにしている。また、両橋桁間の距離が拡縮した時に、伸縮部と共に支承体が変形することにより両橋桁間の伸縮に対応できるようになっている。
【0004】
ところで、上記伸縮部は、その下側に設置される荷重支持部に比べて、車両の走行による摩耗等により劣化が早く進行する。そのため、伸縮部の交換時には荷重支持部がまだ使用できるのにもかかわらず、伸縮部と荷重支持部が一体構造であるため、道路橋伸縮装置全体を交換する必要があり、その結果、メンテナンスにかかるコストが高くなるという問題があった。
【0005】
【発明が解決しようとする課題】
本発明の目的は、荷重支持部上に伸縮部を固定した道路橋伸縮装置において、メンテナンスのコストを低減することが可能な道路橋伸縮装置を提供することにある。
【0006】
【課題を解決するための手段】
上記目的を達成する本発明は、両橋桁間に設置される荷重支持部上に伸縮部を固定した道路橋伸縮装置において、前記荷重支持部と伸縮部とを着脱自在な分割構造にし、前記荷重支持部を、前記道路橋伸縮装置を両橋桁に固定する両ブロック体と、該ブロック体間に固定した橋桁間支承部とから構成し、前記ブロック体を、鋼材から構成し、かつ道路橋幅方向に延在する直方体形状に形成し、該ブロック体の一側面に該ブロック体を前記橋桁内に埋設固定する突起部を設け、前記橋桁間支承部を、前記両橋桁上に載置されかつ前記ブロック体にボルトにより固定される平板状の底板と、該底板上に前記ブロック体と空間部を介在させて加硫接着により固定されかつ道路橋延在方向に変形可能な両支承体と、該両支承体上間に一体的に架設した荷重支持板とから構成し、前記伸縮部を前記ブロック体と荷重支持板にボルトにより着脱自在に固定したことを特徴とする。
【0007】
このように伸縮部と荷重支持部とを着脱自在な分割構造にするため、伸縮部が劣化して交換が必要になった際に伸縮部のみを交換することが可能になる。従って、従来のように道路橋伸縮装置全体を交換する必要がないため、メンテナンスコストの削減が可能になる。
【0008】
【発明の実施の形態】
以下、本発明の構成について添付の図面を参照しながら詳細に説明する。
【0009】
図1は、本発明の道路橋伸縮装置の一例を示し、この道路橋伸縮装置は、両橋桁X間に設置される荷重支持部1と、橋桁X間の距離の拡縮に応じて伸縮する伸縮部3を備えている。
【0010】
荷重支持部1は、道路橋伸縮装置を両橋桁Xに固定するための両ブロック体11と、両ブロック体11間に固定した橋桁間支承部21とから構成されている。
【0011】
両ブロック体11は、鋼材から構成され、道路橋幅方向に延在する直方体形状になっている。ブロック体11の一側面12には、橋桁X内に埋設固定される突起部13が道路橋幅方向に所定の間隔で突設されている。
【0012】
橋桁間支承部21は、両橋桁X上にそれぞれ載置される鋼板からなる平板状の底板22上に両支承体23が固設されている。各支承体23は、ゴム層24と鋼板25とを交互に積層した積層ゴム支承体から構成され、橋桁X間の距離が拡縮して道路橋延在方向Yに剪断力が作用した際にその剪断方向、即ち道路橋延在方向Yに変形できるようになっている。
【0013】
両支承体23上間には、鋼板からなる荷重支持板26が架設してある。底板22、支承体23、及び荷重支持板26は、支承体23の加硫時に接着し、一体的な構造にしてある。
【0014】
各ブロック体11の下面14に底板22をボルト4で固定することにより、支承体23とブロック体11との間に空間部5を介在させながら、橋桁間支承部21を両ブロック体11に固定している。
【0015】
荷重支持部1上に設置される伸縮部3は、ゴム盤からなる弾性盤31を有し、この弾性盤31内の上部と下部にそれぞれ道路橋幅方向に延在する複数の補強用鋼板32,33が埋設されている。弾性盤31の上面31aの補強用鋼板32間には、補強用鋼板32に沿って道路橋幅方向に延びる複数の溝部34が形成されている。弾性盤31の下面31bの補強用鋼板33間にも、補強用鋼板33に沿って道路橋幅方向に延びる複数の溝部35が形成してある。
【0016】
橋桁X間の距離の拡縮に追従してこの溝部34,35が拡縮変形することにより、伸縮部3が伸縮できるようになっている。弾性盤31の道路橋延在方向両端部及び中央部には、伸縮部3を荷重支持部1上に固定するためのボルト孔36,37がそれぞれ道路橋幅方向に沿って所定の間隔で穿設されている。
【0017】
両ブロック体11の上面15間に弾性盤31が載置され、道路橋延在方向両端部のボルト孔36に挿通したボルト6により、弾性盤31が両ブロック体11に着脱自在に固定されている。また、道路橋延在方向中央部のボルト孔37に挿通したボルト7により、弾性盤31が荷重支持板26に着脱自在に固定してある。
【0018】
伸縮部3は、ボルト6,7を外すことにより、荷重支持部1から取り外すことができるようになっており、荷重支持部1に対して着脱自在な分割構造になっている。
【0019】
上記道路橋伸縮装置は、橋桁X間の距離が縮小した際に、溝部34,35が縮小変形する一方、空間部5を縮小変形させながら両支承体23が逆ハ字状に剪断変形することにより、橋桁X間の距離の縮小に追従する。伸縮部3がボルト7により橋桁間支承部21に固定されているので、中央部側の盛り上がりに起因する騒音の発生を招くことがない。他方、橋桁X間の距離が拡大した際には、溝部34,35が拡大変形する一方、空間部5を拡大変形させながら両支承体23がハ字状に剪断変形することにより、橋桁X間の距離の拡大に追従する。
【0020】
上述した道路橋伸縮装置によれば、伸縮部3が荷重支持部1に対して着脱自在な分割構造になっているので、メンテナンス時に伸縮部3が劣化して交換が必要になった際に伸縮部3の交換のみが可能になる。そのため、劣化が進んでいない荷重支持部1は、そのまま使用することができるので、メンテナンスにかかるコストの低減が可能になる。
【0021】
また、伸縮部3の道路橋延在方向中央部のみが橋桁間支承部21に固定されているので、橋桁X間の距離が拡縮した際に、伸縮部3の両側部分が橋桁間支承部21に対して滑り変形できるので、溝部34,35を効果的に変形させ、大きな伸縮量に対応することができる。
【0022】
本発明において、上記支承体23は、ゴム層24と鋼板25とを交互に積層した構成にしたが、橋桁X間の距離の拡縮時に上記のように剪断変形可能であればいずれの構成を採用してもよい。
【0023】
【発明の効果】
上述したように本発明は、両橋桁間に設置される荷重支持部上に伸縮部を固定した道路橋伸縮装置において、荷重支持部と伸縮部とを着脱自在な分割構造にしたので、荷重支持部より劣化が早く進む伸縮部のみを交換することができるため、メンテナンスコストを低減することができる。
【図面の簡単な説明】
【図1】本発明の道路橋伸縮装置の一例を示す断面図である。
【符号の説明】
1 荷重支持部 3 伸縮部
4,6,7 ボルト 5 空間部
11 ブロック体 12 一側面
13 突起部 14 下面
15 上面 21 橋桁間支承部
22 底板 23 支承体
24 ゴム層 25 鋼板
26 荷重支持板 31 弾性盤
32,33 補強用鋼板 34,35 溝部
X 橋桁 Y 道路橋延在方向
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a road bridge expansion / contraction device, and more particularly to a road bridge expansion / contraction device designed to reduce maintenance costs.
[0002]
[Prior art]
Conventionally, as a road bridge expansion and contraction device installed between both bridge girders of a road bridge, a plurality of reinforcing steel plates extending in the width direction of the road bridge are embedded in the upper and lower parts of the rubber board, respectively, for reinforcing the rubber board What formed the groove part extended in the road bridge width direction in the upper-lower surface between steel plates is generally known. When the distance between the two bridge girders is reduced due to seasonal temperature changes, the road bridge expansion / contraction device having the expansion / contraction part of the rubber board rises when the center part of the rubber board rises and the vehicle travels over it. There was a problem that noise was generated because the part was pushed down and hit the bridge girder.
[0003]
Therefore, as a countermeasure, in recent years, a load support part is installed between both bridge girders, and the center part side where the extension part rises is fixed on the load support part, and the load support part and the extension part are integrated into a road bridge. Telescopic devices have been proposed. The load support part has a structure in which a load support steel plate is installed on both bearings that deform when a force in the shearing direction is applied, and an expansion / contraction part is fixed to the load support steel plate to prevent bulge. I have to. Moreover, when the distance between both bridge girders expands and contracts, a support body deform | transforms with an expansion-contraction part, and it can respond now to the expansion / contraction between both bridge girders.
[0004]
By the way, the expansion / contraction part progresses more rapidly due to wear or the like due to running of the vehicle, compared to the load support part installed below the expansion / contraction part. Therefore, even though the load support part can still be used when replacing the expansion / contraction part, it is necessary to replace the entire road bridge expansion / contraction device because the expansion / contraction part and the load support part have an integral structure. There is a problem that the cost is increased.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to provide a road bridge expansion / contraction device capable of reducing maintenance costs in a road bridge expansion / contraction device in which an expansion / contraction portion is fixed on a load support portion.
[0006]
[Means for Solving the Problems]
The present invention to achieve the above object, a road bridge expansion joint fixing the telescopic part on the load-bearing part which is placed between the two bridge girder, and a collapsible portion and the load-bearing part to freely divided structure detachable, the load The support part is composed of both block bodies for fixing the road bridge expansion and contraction device to both bridge girders, and a bridge support part between the bridge girders fixed between the block bodies, the block body is made of steel, and the road bridge width. Formed in a rectangular parallelepiped shape extending in the direction, provided on one side surface of the block body with a projecting portion for embedding and fixing the block body in the bridge girder, and the support portion between the bridge girders is placed on the bridge girder and A flat bottom plate fixed to the block body by bolts, and both support bodies fixed on the bottom plate by vulcanization adhesion with the block body and a space interposed therebetween and deformable in the direction of road bridge extension; Constructed integrally between the two bearing bodies It consists of a heavy supporting plate, characterized in that the expansion portion is detachably fixed by bolts to the block body and the load support plate.
[0007]
As described above, since the stretchable part and the load support part have a detachable divided structure, it is possible to replace only the stretchable part when the stretchable part deteriorates and needs to be replaced. Therefore, since it is not necessary to replace the entire road bridge expansion / contraction device as in the prior art, maintenance costs can be reduced.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.
[0009]
FIG. 1 shows an example of a road bridge expansion / contraction device according to the present invention. The road bridge expansion / contraction device expands / contracts according to the expansion / contraction of the distance between the load support portion 1 and the bridge girder X. Part 3 is provided.
[0010]
The load support portion 1 is composed of both block bodies 11 for fixing the road bridge telescopic device to both bridge girders X and an inter-girder support portion 21 fixed between both block bodies 11.
[0011]
Both block bodies 11 are made of steel and have a rectangular parallelepiped shape extending in the road bridge width direction. On one side surface 12 of the block body 11, projecting portions 13 embedded and fixed in the bridge girder X are projected at predetermined intervals in the road bridge width direction.
[0012]
In the inter-girder support portion 21, both support bodies 23 are fixedly provided on a flat bottom plate 22 made of a steel plate placed on each bridge girder X. Each bearing body 23 is composed of a laminated rubber bearing body in which rubber layers 24 and steel plates 25 are alternately laminated. When the distance between the bridge beams X expands and contracts and a shearing force acts in the road bridge extending direction Y, It can be deformed in the shearing direction, that is, the road bridge extending direction Y.
[0013]
A load support plate 26 made of a steel plate is installed between the two support bodies 23. The bottom plate 22, the support body 23, and the load support plate 26 are bonded together when the support body 23 is vulcanized to have an integral structure.
[0014]
By fixing the bottom plate 22 to the lower surface 14 of each block body 11 with bolts 4, the inter-girder support portions 21 are fixed to both block bodies 11 while the space portion 5 is interposed between the support body 23 and the block body 11. is doing.
[0015]
The expansion / contraction part 3 installed on the load support part 1 has an elastic board 31 made of a rubber board, and a plurality of reinforcing steel plates 32 extending in the width direction of the road bridge at the upper and lower parts in the elastic board 31 respectively. 33 are buried. Between the reinforcing steel plates 32 on the upper surface 31a of the elastic board 31, a plurality of grooves 34 extending in the width direction of the road bridge along the reinforcing steel plates 32 are formed. A plurality of grooves 35 extending in the width direction of the road bridge along the reinforcing steel plate 33 are also formed between the reinforcing steel plates 33 on the lower surface 31 b of the elastic board 31.
[0016]
The expansion and contraction of the groove portions 34 and 35 following the expansion and contraction of the distance between the bridge beams X allows the expansion and contraction portion 3 to expand and contract. Bolt holes 36 and 37 for fixing the expansion / contraction part 3 on the load support part 1 are drilled at predetermined intervals along the road bridge width direction at both ends and the center part of the elastic board 31 in the road bridge extending direction. It is installed.
[0017]
The elastic board 31 is placed between the upper surfaces 15 of both block bodies 11, and the elastic board 31 is detachably fixed to both block bodies 11 by the bolts 6 inserted into the bolt holes 36 at both ends of the road bridge extending direction. Yes. In addition, the elastic plate 31 is detachably fixed to the load support plate 26 by the bolt 7 inserted through the bolt hole 37 at the center of the road bridge extending direction.
[0018]
The expansion / contraction part 3 can be removed from the load support part 1 by removing the bolts 6 and 7, and has a split structure that is detachable from the load support part 1.
[0019]
When the distance between the bridge girders X is reduced, the above-mentioned road bridge expansion and contraction device is such that the grooves 34 and 35 are reduced and deformed, and the two support bodies 23 are sheared and deformed in an inverted C shape while the space 5 is reduced and deformed. Thus, the distance between the bridge beams X is reduced. Since the expansion / contraction part 3 is being fixed to the bridge girder support part 21 with the volt | bolt 7, the generation | occurrence | production of the noise resulting from the swelling of the center part side is not caused. On the other hand, when the distance between the bridge girders X is expanded, the groove portions 34 and 35 are expanded and deformed, while the two support bodies 23 are sheared and deformed in a C shape while the space portion 5 is expanded and deformed. Follow the increase in distance.
[0020]
According to the road bridge expansion / contraction device described above, the expansion / contraction part 3 has a split structure that is detachable with respect to the load support part 1. Therefore, the expansion / contraction part 3 can be expanded / contracted when the expansion / contraction part 3 deteriorates and needs to be replaced during maintenance. Only part 3 can be replaced. Therefore, since the load support part 1 which has not deteriorated can be used as it is, the cost for maintenance can be reduced.
[0021]
Moreover, since only the center part of the extension part 3 in the road bridge extending direction is fixed to the inter-girder support part 21, when the distance between the bridge girder X is expanded or reduced, both side parts of the extension part 3 become the inter-girder support part 21. Therefore, the groove portions 34 and 35 can be effectively deformed to cope with a large amount of expansion and contraction.
[0022]
In the present invention, the support body 23 has a structure in which the rubber layers 24 and the steel plates 25 are alternately laminated. However, any structure can be adopted as long as it can be shear-deformed as described above when the distance between the bridge beams X is expanded or reduced. May be.
[0023]
【The invention's effect】
As described above, in the road bridge expansion / contraction device in which the expansion / contraction part is fixed on the load support part installed between the bridge girders, the load support part and the expansion / contraction part have a detachable divided structure. Since only the expansion / contraction part whose deterioration progresses faster than the part can be replaced, the maintenance cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an example of a road bridge expansion / contraction device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Load support part 3 Expansion-contraction part 4,6,7 Bolt 5 Space part 11 Block body 12 One side surface 13 Protrusion part 14 Lower surface 15 Upper surface 21 Bridge support part 22 Bottom plate 23 Support body 24 Rubber layer 25 Steel plate 26 Load support plate 31 Elasticity Panel 32, 33 Steel plate for reinforcement 34, 35 Groove X Bridge girder Y Road bridge extension direction

Claims (3)

両橋桁間に設置される荷重支持部上に伸縮部を固定した道路橋伸縮装置において、前記荷重支持部と伸縮部とを着脱自在な分割構造にし
前記荷重支持部を、前記道路橋伸縮装置を両橋桁に固定する両ブロック体と、該ブロック体間に固定した橋桁間支承部とから構成し、
前記ブロック体を、鋼材から構成し、かつ道路橋幅方向に延在する直方体形状に形成し、該ブロック体の一側面に該ブロック体を前記橋桁内に埋設固定する突起部を設け、
前記橋桁間支承部を、前記両橋桁上に載置されかつ前記ブロック体にボルトにより固定される平板状の底板と、該底板上に前記ブロック体と空間部を介在させて加硫接着により固定されかつ道路橋延在方向に変形可能な両支承体と、該両支承体上間に一体的に架設した荷重支持板とから構成し、
前記伸縮部を前記ブロック体と荷重支持板にボルトにより着脱自在に固定した道路橋伸縮装置。
In a road bridge expansion / contraction device in which an expansion / contraction part is fixed on a load support part installed between both bridge girders, the load support part and the expansion / contraction part have a detachable division structure ,
The load support portion is composed of both block bodies for fixing the road bridge expansion / contraction device to both bridge girders, and a support portion between the bridge girders fixed between the block bodies,
The block body is made of a steel material and is formed in a rectangular parallelepiped shape extending in the width direction of the road bridge, and provided with a protruding portion for embedding and fixing the block body in the bridge girder on one side surface of the block body,
The support part between the bridge girders is mounted on the bridge girders and is fixed to the block body by bolts, and is fixed by vulcanization bonding with the block body and the space on the bottom plate. And is composed of both bearing bodies that can be deformed in the direction in which the road bridge extends, and a load support plate that is integrally constructed between the both bearing bodies,
Detachably fixed road bridge expansion joint with bolts the elastic portion to the block body and the load support plate.
前記支承体が、ゴム層と鋼板とを交互に積層した積層ゴム支承体からなる請求項1に記載の道路橋伸縮装置。The road bridge expansion and contraction device according to claim 1, wherein the support body is a laminated rubber support body in which rubber layers and steel plates are alternately stacked . 前記伸縮部を、弾性盤内の上部と下部にそれぞれ道路橋幅方向に延在する複数の補強用鋼板を埋設し、前記弾性盤の該補強用鋼板間の上下面に道路橋幅方向に延びる溝部を形成して構成し、前記弾性盤の道路橋延在方向両端部をボルトにより前記ブロック体の上面に、道路橋延在方向中央部をボルトにより前記荷重支持板の上面に、それぞれ着脱自在に固定した請求項1または2に記載の道路橋伸縮装置。 A plurality of reinforcing steel plates extending in the width direction of the road bridge are embedded in the upper and lower portions of the elastic board in the elastic board, respectively, and extended in the road bridge width direction on the upper and lower surfaces between the reinforcing steel plates of the elastic board. A groove is formed, and both ends of the elastic board in the direction of road bridge extension are detachably attached to the upper surface of the block body by bolts, and the center part of the road bridge extension direction is detachable from the upper surface of the load support plate by bolts. The road bridge expansion and contraction device according to claim 1 or 2, which is fixed to the frame.
JP2001395983A 2001-12-27 2001-12-27 Road bridge telescopic device Expired - Fee Related JP3912493B2 (en)

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JP4968603B2 (en) * 2006-02-27 2012-07-04 巧 松本 Telescopic device
JP2010285757A (en) * 2009-06-09 2010-12-24 Yokohama Rubber Co Ltd:The Expansion apparatus for road bridge
CN103590329B (en) * 2013-11-25 2015-12-02 中铁第一勘察设计院集团有限公司 Railway Prestressed Concrete partial cable-stayed bridge beam-ends shrinkage joint

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