JPH10159007A - Expansion device for road bridge - Google Patents
Expansion device for road bridgeInfo
- Publication number
- JPH10159007A JPH10159007A JP31660896A JP31660896A JPH10159007A JP H10159007 A JPH10159007 A JP H10159007A JP 31660896 A JP31660896 A JP 31660896A JP 31660896 A JP31660896 A JP 31660896A JP H10159007 A JPH10159007 A JP H10159007A
- Authority
- JP
- Japan
- Prior art keywords
- bridge
- plate
- filled
- floor
- pavement material
- 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.)
- Pending
Links
Landscapes
- Road Paving Structures (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、橋梁や高架橋等の
道路橋の継ぎ目部に用いられる伸縮装置に関し、更に詳
しくは、道路橋の床板が温度変化等により伸縮し、それ
により継ぎ目部が容積変化しても、そこに充填された舗
装材の表面が上下変動するのを抑えるようにした道路橋
用伸縮装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion / contraction device used for a joint of a road bridge such as a bridge or viaduct, and more particularly, a floor plate of the road bridge expands / contracts due to a temperature change or the like, whereby the joint has a volume. The present invention relates to a road bridge expansion / contraction device that suppresses vertical movement of the surface of a paving material filled therein even if it changes.
【０００２】[0002]
【従来の技術】一般に、橋梁や高架橋等の道路橋の継ぎ
目部には、温度変化による膨張収縮や、大きな荷重が負
荷された際の撓み等による伸縮を吸収するため、伸縮自
在な伸縮装置（継手）が設けられている。このような伸
縮装置として、従来、例えば、図３に示すようなものが
ある。この伸縮装置は、遊間１１を介して前後に配列さ
れた床板１２上に設けた床面舗装層１３間の遊間１１に
面する継ぎ目部１４に、伸縮性舗装材を充填して構成さ
れ、床板１２が伸縮した際に、遊間１１と継ぎ目部１４
が拡縮してその伸縮を吸収するようになっている。2. Description of the Related Art In general, a joint of a road bridge such as a bridge or a viaduct is provided with a telescopic device (extensible) to absorb expansion and contraction due to a temperature change and expansion and contraction due to bending or the like when a large load is applied. Joint) is provided. Conventionally, as such a telescopic device, for example, there is one as shown in FIG. This stretching device is configured by filling a seam portion 14 facing a play 11 between floor pavement layers 13 provided on floorboards 12 arranged back and forth through a play 11 with an elastic pavement material. When 12 expands and contracts, the play space 11 and the joint 14
Are expanded and contracted to absorb the expansion and contraction.
【０００３】上記伸縮装置は、床板１２が伸縮した際に
継ぎ目部１４に充填された伸縮性舗装材もそれに伴って
伸縮変形し、床板１２の収縮時には、伸縮性舗装材の表
面が床面舗装層１３の表面より低く変位する一方、伸長
時には床面舗装層１３の表面より高く盛り上がり、伸縮
性舗装材表面が上下に大きく変化する。そのため、伸縮
性舗装材にクラックが発生し易いという問題があった。
それを解決するため、高い伸縮性能を有する舗装材を使
用すると、逆に柔らかくなりすぎて、流動わだちが発生
する原因となる。In the above-mentioned stretching device, when the floor plate 12 expands and contracts, the elastic pavement material filled in the joint portion 14 also expands and contracts accordingly, and when the floor plate 12 contracts, the surface of the elastic pavement material changes to the floor pavement. While displacing lower than the surface of the layer 13, it rises higher than the surface of the floor pavement layer 13 during elongation, and the surface of the elastic pavement material changes significantly up and down. For this reason, there is a problem that cracks easily occur in the stretchable pavement material.
If a pavement material having a high elasticity is used to solve the problem, the pavement material becomes too soft on the contrary and causes flow rutting.
【０００４】一方、充填された舗装材表面の上下動変化
を抑えるため、図４に示す伸縮装置の提案がある。遊間
１１に面した床板１２の上端部を切断して窪み部に形成
し、その窪み部の底面が遊間１１側を高くした傾斜面１
２ａになっている。この両傾斜面１２ａにまたがって橋
架板１５を摺動自在に配設し、この橋架板１５上の窪み
部から継ぎ目部１４にかけて舗装材を充填するようにし
ている。[0004] On the other hand, there is a proposal of a telescopic device shown in FIG. 4 in order to suppress the vertical movement of the surface of the filled pavement material. An inclined surface 1 in which the upper end of the floor plate 12 facing the play space 11 is cut to form a recess, and the bottom surface of the recess is raised on the play space 11 side.
2a. A bridging plate 15 is slidably disposed over both of the inclined surfaces 12a, and the paving material is filled from the recessed portion on the bridging plate 15 to the joint portion 14.
【０００５】この伸縮装置では、床板１２の伸長により
遊間１１が狭くなると、それに伴い橋架板１５は傾斜面
１２ａ上を下方側に移動する。そのため、継ぎ目部１４
の収縮により舗装材が変形移動しても、その移動した部
分は橋架板１５が降下して空いた空間にくるため、舗装
材の表面は盛り上がらずに床面舗装層１３の表面と略一
定を保つことができる。In this telescopic device, when the play space 11 becomes narrow due to the extension of the floor plate 12, the bridge plate 15 moves downward on the inclined surface 12a accordingly. Therefore, the joint 14
Even if the pavement material is deformed and moved due to the shrinkage, the moved portion comes to the empty space where the bridge plate 15 descends, so that the surface of the pavement material does not rise and remains substantially constant with the surface of the floor pavement layer 13. Can be kept.
【０００６】また、床板１２の収縮により遊間１１が広
くなると、それに伴い橋架板１５は傾斜面１２ａ上を上
方側に移動する。継ぎ目部１４の容積拡大により舗装材
が変形移動するが、橋架板１５の上昇により継ぎ目部１
４の空間が狭められるため、舗装材の表面は降下せずに
床面舗装層１３と略同じ表面位置を保つことができ、充
填された舗装材表面の上下動変化を抑えるようになって
いる。When the play space 11 is widened due to the contraction of the floor plate 12, the bridge plate 15 moves upward on the inclined surface 12a. The pavement material is deformed and moved by the increase in the volume of the seam portion 14, but the seam portion 1
Since the space of No. 4 is narrowed, the surface of the pavement material can be maintained at substantially the same surface position as the floor pavement layer 13 without descending, and the vertical movement of the surface of the filled pavement material is suppressed. .
【０００７】しかし、この伸縮装置の場合は、設置工事
の際に床板１２の加工を行う必要があるため、その分作
業が煩雑で工期が長くなると共にコストアップを招くと
いう問題がある。また、床板１２上端部を切断して形成
した窪み部の深さまで深く舗装材を充填する構成とする
ため、少なくとも表面層１６は、床面舗装層１３と同じ
硬さのアスファルトコンクリート舗装を施す必要があ
る。そのため、伸縮によって繰り返し応力が作用するこ
とにより、その表面層にクラックが発生するという問題
もある。このクラックの発生を抑えようとすると、大型
な伸縮装置を使用する必要があり、コストが大幅に増大
する。However, in the case of the telescopic device, since it is necessary to process the floor plate 12 at the time of installation work, there is a problem that the work is complicated, the construction period is lengthened, and the cost is increased. Further, in order to fill the pavement material deeply to the depth of the recess formed by cutting the upper end of the floor plate 12, at least the surface layer 16 needs to be asphalt concrete pavement having the same hardness as the floor pavement layer 13. There is. Therefore, there is also a problem that cracks are generated in the surface layer due to repeated stress acting due to expansion and contraction. In order to suppress the occurrence of the crack, it is necessary to use a large-sized expansion / contraction device, and the cost is greatly increased.
【０００８】[0008]
【発明が解決しようとする課題】本発明の目的は、クラ
ックの発生や伸縮装置の大型化、更に流動わだちの発生
を招かずに、道路橋の継ぎ目部に充填された舗装材表面
の上下変動を抑制することが可能な道路橋用伸縮装置を
提供することにある。本発明の他の目的は、設置工事が
容易で工期も長くなることがなく、かつ大幅なコストア
ップを招くこともない道路橋用伸縮装置を提供すること
にある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for forming a crack on a surface of a pavement material filled in a joint of a road bridge without causing the expansion and contraction device to increase in size and the occurrence of flow rutting. It is an object of the present invention to provide a road bridge telescopic device capable of suppressing the occurrence of a traffic. It is another object of the present invention to provide a telescopic device for a road bridge that can be easily installed, does not require a long construction period, and does not cause a significant increase in cost.
【０００９】[0009]
【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、継ぎ目部に面して遊間を介して配列された前後の
床板端部上にそれぞれ該遊間側を高くした傾斜面を上面
に有する支持台を固定し、これら両支持台の傾斜面間に
またがって橋架板を摺動可能に載置し、この橋架板上の
前記継ぎ目部に伸縮性舗装材を充填したことを特徴とす
る。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an inclined surface having an increased height of the gap on the upper and lower ends of the front and rear floorboards arranged via a gap facing the joint. A support having a fixed support, a bridge plate is slidably mounted between the inclined surfaces of the two supports, and the seam on the bridge plate is filled with an elastic pavement material. .
【００１０】このように遊間側を高くした傾斜面を上面
に有する支持台を前後の床板端部上にそれぞれ固定し、
その両傾斜面間にわたって橋架板を摺動可能に設け、そ
の上に伸縮性舗装材を充填して継ぎ目部を埋設すること
により、温度変化等により床板が伸縮した時に、橋架板
が上下動して、増大或いは縮小する継ぎ目部の容積変化
を抑えることができるため、継ぎ目部に充填された伸縮
性舗装材の体積変化が抑制され、それによって、舗装材
表面が大きく上下変動するのを回避することができる。
そのため、継ぎ目部の舗装材表面を常に床面舗装層表面
と略同位置に保つことが可能になる。In this manner, the support base having the inclined surface with the play side raised on the upper surface is fixed on the front and rear floor plate ends, respectively.
A bridge plate is slidably provided between the two inclined surfaces, and a stretchable pavement material is filled on the bridge plate to bury the joint, so that when the floor plate expands and contracts due to a temperature change, the bridge plate moves up and down. As a result, the change in volume of the seam portion that increases or decreases can be suppressed, so that the change in volume of the elastic pavement material filled in the seam portion is suppressed, thereby avoiding a large vertical movement of the pavement material surface. be able to.
Therefore, it becomes possible to always keep the surface of the pavement material at the joint at substantially the same position as the surface of the floor pavement layer.
【００１１】また、伸縮装置を床板上に設け、継ぎ目部
に充填する舗装材の深さを浅い構造とするので、従来の
ような床面舗装層と同じ硬さのアスファルトコンクリー
ト舗装材を充填する必要がなく、それよりも伸縮性の高
い舗装材を充填することができるため、伸縮による繰り
返し応力を受けても容易にクラックの発生を招くことが
なく、そのため、伸縮装置の大型化も不要となる。[0011] Further, since the expansion device is provided on the floor plate and the depth of the pavement material to be filled into the seam portion is made shallow, the asphalt concrete pavement material having the same hardness as the conventional floor pavement layer is filled. It is not necessary, and it is possible to fill the pavement material with higher elasticity, so that even if it receives repeated stress due to expansion and contraction, it does not easily cause cracks, so that it is not necessary to enlarge the expansion device. Become.
【００１２】また更に、充填された舗装材の体積変化が
小さいため、従来の床板端部上の継ぎ目部に舗装材を充
填した伸縮装置に用いられる伸縮性舗装材よりも伸縮性
の低い舗装材を使用することができるので、流動わだち
の発生も回避することができる。また、既にできあがっ
ている各部材を床板端部上に順次配置していくだけでよ
いため、設置工事が容易で工期も長くなることがなく、
かつ大幅なコストアップを招くこともなく、更に従来の
床板端部上の継ぎ目部に舗装材を充填した伸縮装置を本
発明の伸縮装置に改造することが容易である。Furthermore, since the volume change of the filled pavement material is small, the pavement material has a lower elasticity than a conventional elastic pavement material used for a stretching device in which a seam portion on the edge of a floorboard is filled with the pavement material. Can be used, so that the occurrence of flow rutting can also be avoided. Also, since it is only necessary to sequentially arrange each of the already completed members on the end of the floorboard, installation work is easy and the construction period is not lengthened,
In addition, it is easy to remodel the expansion device of the present invention from a conventional expansion device in which a seam on a floor plate end is filled with a pavement material without significantly increasing the cost.
【００１３】[0013]
【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。図１は、道路橋
の継ぎ目部に設置された本発明の道路橋用伸縮装置の一
例を示し、１は継ぎ目部、２は道路橋用伸縮装置であ
る。前後に遊間３を介して床板４が配列され、各床板４
上にはその前後両端部を除いて床面舗装層５がそれぞれ
設けられている。各床面舗装層５間には、遊間３に連な
る継ぎ目部１が形成され、この継ぎ目部１に伸縮装置２
が配設されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows an example of a road bridge expansion / contraction device of the present invention installed at a seam portion of a road bridge, where 1 is a seam portion and 2 is a road bridge expansion / contraction device. Floor boards 4 are arranged in front and rear through a play space 3, and each floor board 4
The floor surface pavement layer 5 is provided on the top except for the front and rear ends. Between each floor pavement layer 5, a seam portion 1 is formed which is continuous with the play space 3, and the seam portion 1
Are arranged.
【００１４】上記伸縮装置２は、継ぎ目部１に面する前
後の床板４の端部４ａ，４ｂ上に、それぞれ所定の間隔
を隔てて固定された前後一対の支持台２１を備えてい
る。この支持台２１は、縦断面が直角三角形状に形成さ
れ、遊間３に面した端部４ａ，４ｂ側から離間する方向
に向けて次第に低くした平面状の傾斜面２１ａを上面に
有し、端部４ａ，４ｂ上内で前後対称的に配設されてい
る。The telescopic device 2 is provided with a pair of front and rear support bases 21 fixed at predetermined intervals on ends 4a and 4b of the floor plate 4 before and after facing the joint portion 1, respectively. This support base 21 has a vertical inclined surface 21a whose upper surface is gradually lowered in a direction away from the ends 4a, 4b facing the play space 3 on the upper surface. They are arranged symmetrically in the front and rear within the portions 4a and 4b.
【００１５】前後の支持台２１間には、１枚の橋架板２
２が摺動可能に配設されている。この橋架板２２は縦断
面形状が上方に屈曲部を位置させたく字状になってお
り、橋架板２２の屈曲上端２２ａから前側の前部２２ｂ
及び後側の後部２２ｃは、橋架板２２を前後の支持台上
面の傾斜面２１ａにまたがって載置した際に、それが接
する各傾斜面２１ａに沿って平面状（断面直線状）に延
在し、その下面２２b'，２２c'がそれぞれ傾斜面２１ａ
に接触するようになっている。One bridge plate 2 is provided between the front and rear support bases 21.
2 are slidably disposed. The bridge plate 22 has a vertical cross-sectional shape in which a bent portion is positioned upward, and a front portion 22b on the front side is formed from the bent upper end 22a of the bridge plate 22.
When the bridge plate 22 is placed across the inclined surfaces 21a of the front and rear support bases, the rear portion 22c of the rear side extends in a plane (linear cross section) along each inclined surface 21a with which the bridge plate 22 contacts. The lower surfaces 22b 'and 22c' are respectively inclined surfaces 21a '
It comes in contact with.
【００１６】この橋架板２２上の継ぎ目部１には、伸縮
性を有する舗装材が充填され、床面舗装層５の表面５ａ
と高さを同じにした表面２３ａを有する継ぎ目部舗装層
２３が形成されている。上述した伸縮装置２によれば、
温度変化等により床板４が図２の（ａ）から（ｂ）のよ
うに収縮すると、継ぎ目部１の幅が増大し、その容積が
大きくなる。その一方で、遊間３の広がりにより、橋架
板２２の前端２２b1と後端２２c1が傾斜面２１ａの高い
位置側に摺動移動して接触した状態となる。そのため、
橋架板２２が上方側に移動する。従って、継ぎ目部１の
拡大により充填された舗装材が変形移動するが、橋架板
１５の上昇により継ぎ目部１の拡大した空間が相殺され
る方向となるため、継ぎ目部舗装層２３の表面２３ａは
従来のように降下せずに床面舗装層５の表面５ａと略同
じ表面位置を保つことになる。The joint 1 on the bridge plate 22 is filled with a pavement material having elasticity, and the surface 5a of the floor pavement layer 5 is filled.
A seam paving layer 23 having a surface 23a having the same height as that of the seam is formed. According to the telescopic device 2 described above,
When the floor plate 4 contracts as shown in FIGS. 2A to 2B due to a temperature change or the like, the width of the joint portion 1 increases, and the volume thereof increases. Meanwhile, the spread of the Joint Gap 3, a state in which the front end 22b 1 and the rear end 22c 1 of the bridge plate 22 is in contact slides moved to higher inclined surface 21a position. for that reason,
The bridge plate 22 moves upward. Accordingly, the filled pavement material is deformed and moved by the expansion of the seam portion 1, but the direction in which the expanded space of the seam portion 1 is offset by the rise of the bridge plate 15, so that the surface 23a of the seam portion pavement layer 23 is The surface position is kept substantially the same as the surface 5a of the floor pavement layer 5 without descending as in the related art.
【００１７】一方、床板４が図２の（ａ）から（ｃ）の
ように伸長すると、継ぎ目部１の幅が縮小し、その容積
が低減する。遊間３の収縮により、橋架板２２の前端２
２b1と後端２２c1が傾斜面２１ａの低い位置側に摺動移
動して接触した状態となる。そのため、橋架板２２が下
方側に移動する。その結果、継ぎ目部１の縮小により充
填された舗装材が変形移動するが、橋架板１５の降下に
より継ぎ目部１の縮小した空間が相殺される方向となる
ため、継ぎ目部舗装層２３の表面２３ａは従来のような
上昇を見せず、床面舗装層５の表面５ａと略同じ表面位
置となる。On the other hand, when the floor plate 4 is extended as shown in FIGS. 2A to 2C, the width of the joint portion 1 is reduced, and the volume thereof is reduced. The contraction of the play 3 causes the front end 2 of the bridge plate 22
2b 1 and the rear end 22c 1 are slid to the lower side of the inclined surface 21a and come into contact with each other. Therefore, the bridge plate 22 moves downward. As a result, the filled pavement material is deformed and moved by the reduction of the seam portion 1, but the direction in which the reduced space of the seam portion 1 is offset by the lowering of the bridge plate 15, so that the surface 23 a of the seam portion pavement layer 23 is removed. Does not show a rise as in the prior art, and has a surface position substantially equal to the surface 5a of the floor pavement layer 5.
【００１８】このように本発明では、前後の床板４の端
部４ａ，４ｂ上にそれぞれ遊間３側を高くした傾斜面２
１ａを上面に形成した支持台２１を固設し、これら両支
持台２１の傾斜面２１ａ間にまたがって橋架板２２を摺
動できるように載置し、その上に伸縮性舗装材を充填し
て継ぎ目部１を埋めるようにしたので、床板４の伸縮時
に、橋架板２２が上下移動して、継ぎ目部１の容積変化
を吸収させるようにできる。そのため、継ぎ目部１に充
填した舗装材の体積変化を抑え、継ぎ目部舗装層２３の
上下変動を抑制することができるので、その表面２３ａ
を常に略一定に保ち、床面舗装層５の表面５ａと同位置
に維持することができる。As described above, according to the present invention, the inclined surfaces 2 with the play 3 being higher on the ends 4a and 4b of the front and rear floor plates 4 respectively.
1a is fixed on the upper surface of the support 21 and the bridge plate 22 is slidably mounted on the bridge 21 across the inclined surfaces 21a of the two supports 21 and filled with an elastic pavement material. Since the seam portion 1 is filled, the bridge plate 22 moves up and down when the floor plate 4 expands and contracts, so that a change in volume of the seam portion 1 can be absorbed. Therefore, the change in volume of the pavement material filled in the seam portion 1 can be suppressed, and the vertical fluctuation of the seam portion pavement layer 23 can be suppressed.
Is always kept substantially constant, and can be maintained at the same position as the surface 5 a of the floor pavement layer 5.
【００１９】また、伸縮装置を床板４上に設け、継ぎ目
部１の深さを浅い構造とするため、そこに充填される舗
装材を従来のような床面舗装層５と同じ伸縮性の小さい
アスファルトコンクリート舗装材を使用する必要がな
く、それよりも伸縮性の高い舗装材を用いることができ
るので、伸縮によって繰り返し応力が作用してもクラッ
クが容易に発生することがなく、かつ伸縮装置の大型化
を招くこともない。Further, since the expansion and contraction device is provided on the floor plate 4 and the seam portion 1 has a shallow structure, the pavement material to be filled therein has the same low elasticity as the conventional floor pavement layer 5. Since it is not necessary to use asphalt concrete pavement material and it is possible to use a pavement material with higher elasticity, cracks are not easily generated even if repeated stress is applied by expansion and contraction, and the expansion device There is no increase in size.
【００２０】また、充填された舗装材の体積変化が小さ
いため、図３に示す従来の伸縮装置に用いられる伸縮性
舗装材よりも伸縮性の低い舗装材を使用することができ
るので、流動わだちが発生する問題もない。また、予め
作製されている各部材を床板端部４ａ，４ｂ上に順次設
置するだけでよいため、設置工事が容易で工期も長くな
ることがなく、かつ大幅なコストアップを招くこともな
い。更に、図３に示す従来の伸縮装置を本発明の伸縮装
置に容易に改造することができる。Further, since the volume change of the filled pavement material is small, it is possible to use a pavement material having lower elasticity than the elastic pavement material used in the conventional expansion device shown in FIG. There is no problem that occurs. In addition, since it is only necessary to sequentially install the members that have been manufactured in advance on the floor plate ends 4a and 4b, the installation work is easy, the construction period is not lengthened, and there is no significant cost increase. Further, the conventional telescopic device shown in FIG. 3 can be easily modified to the telescopic device of the present invention.
【００２１】本発明において、例えば、床板４の上面か
ら橋架板２２の屈曲上端２２ａまでの長さをｘ1 、その
屈曲上端２２ａから継ぎ目部舗装層表面２３ａまでの長
さをｘ2 とすると、継ぎ目部１の幅Ｗを５００mmとした
際に、舗装厚さＤが７５mmの場合はｘ1 ＝５８mm、ｘ2
＝１７mm、舗装厚さＤが５０mmの場合はｘ1 ＝３９mm、
ｘ2 ＝１１mm、舗装厚さＤが１００mmの場合はｘ1 ＝７
８mm、ｘ2 ＝２２mmとすることで、床板の伸縮±５％に
対し、実際の容積変化を±２％以内に抑えることができ
る。In the present invention, for example, when the length from the upper surface of the floor plate 4 to the bent upper end 22a of the bridge plate 22 is x 1 , and the length from the bent upper end 22a to the seam paving layer surface 23a is x 2 , When the width W of the seam portion 1 is 500 mm and the pavement thickness D is 75 mm, x 1 = 58 mm and x 2
= 17 mm, x 1 = 39 mm when the pavement thickness D is 50 mm,
x 2 = 11 mm, x 1 = 7 when pavement thickness D is 100 mm
By setting 8 mm and x 2 = 22 mm, the actual volume change can be suppressed to within ± 2% with respect to the expansion and contraction of the floorboard of ± 5%.
【００２２】上記床板４としては、橋梁や高架橋等に使
用される従来公知の材料が使用でき、例えば、コンクリ
ートや鉄骨等で構成することができる。床面舗装層５を
構成する材料としては、従来同様のアスファルトコンク
リートを用いることができる。上記継ぎ目部１に充填さ
れる伸縮性舗装材の材料としては、従来公知のものが使
用可能であり、例えば、ゴム入りアスファルトにより単
粒度骨材を結合するようにした舗装材等を好ましく用い
ることができる。The floor plate 4 can be made of a conventionally known material used for bridges, viaducts, and the like, and can be made of, for example, concrete or steel. As a material constituting the floor pavement layer 5, the same asphalt concrete as that of the related art can be used. As the material of the elastic pavement material to be filled in the joint portion 1, a conventionally known material can be used. For example, a pavement material in which a single-grain aggregate is bonded by asphalt containing rubber is preferably used. Can be.
【００２３】上記支持台２１は、例えば、鉄板やコンク
リート等から構成することができる。この支持台２１
は、上記実施形態では、縦断面直角三角形状にしたが、
上面に遊間側を高くした傾斜面２１ａをもった形状であ
れば特に限定されない。上記橋架板２２としては、鉄板
や銅板等の金属板や合成樹脂板、更にその合成樹脂板に
補強繊維を埋設した繊維強化樹脂板等を好ましく用いる
ことができる。この橋架板２２と支持台２１の接触面、
即ち、橋架板２２の下面２２b'，２２c'と支持台２１の
傾斜面２１ａは、橋架板２２の摺動移動を容易にするた
め、摩擦抵抗を減少するように、例えば、テフロンコー
ティング等の表面加工や処理を施すのが好ましい。The support 21 can be made of, for example, an iron plate or concrete. This support 21
In the above embodiment, the vertical cross section is a right triangle,
The shape is not particularly limited as long as it has a shape having an inclined surface 21a with the play side raised on the upper surface. As the bridge plate 22, a metal plate such as an iron plate or a copper plate, a synthetic resin plate, and a fiber reinforced resin plate in which reinforcing fibers are embedded in the synthetic resin plate can be preferably used. A contact surface between the bridge plate 22 and the support 21;
That is, the lower surfaces 22b 'and 22c' of the bridge plate 22 and the inclined surface 21a of the support base 21 are made of, for example, a Teflon-coated surface so as to reduce frictional resistance in order to facilitate sliding movement of the bridge plate 22. Processing or treatment is preferably performed.
【００２４】本発明の伸縮装置は、例えば、幅Ｗを５０
０mm前後、深さ（舗装厚さ）Ｄ（床面舗装層５の厚さと
同じ）を５０〜１００mm程度にした継ぎ目部１に好適に
設置することができる。The expansion and contraction device of the present invention has a width W of 50, for example.
It can be suitably installed in the seam portion 1 having a depth (paving thickness) D (same as the thickness of the floor pavement layer 5) of about 0 to about 100 mm.
【００２５】[0025]
【発明の効果】上述のように本発明は、継ぎ目部に面し
て遊間を介して配列された前後の床板端部上にそれぞれ
該遊間側を高くした傾斜面を上面に有する支持台を固定
し、これら両支持台の傾斜面間にまたがって橋架板を摺
動可能に載置し、この橋架板上の継ぎ目部に伸縮性舗装
材を充填したので、クラックの発生や伸縮装置の大型
化、流動わだちの発生を招かずに、道路橋の継ぎ目部に
充填された舗装材表面の上下変動を抑制することができ
ると共に、設置工事が容易で工期も長くなることがな
く、かつ大幅なコストアップを招くこともない。As described above, according to the present invention, a support base having an inclined surface with its clearance side raised on the upper surface is fixed to the front and rear floor plate ends arranged via a clearance facing the joint. The bridge plate was slidably placed between the inclined surfaces of the two support bases, and the joints on the bridge plate were filled with the elastic pavement material. In addition to suppressing the flow rutting, vertical fluctuations in the surface of the pavement material filled in the seam of the road bridge can be suppressed, and the installation work is easy and the construction period is not lengthened. There is no inviting up.
【図１】道路橋の継ぎ目部に設置された本発明の道路橋
用伸縮装置の一例を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing an example of a road bridge expansion / contraction device of the present invention installed at a joint of a road bridge.
【図２】（ａ）は図１の要部拡大断面図、（ｂ），
（ｃ）は、道路橋の床板が伸縮した際の道路橋用伸縮装
置の状態を示す要部拡大断面図である。2A is an enlarged sectional view of a main part of FIG. 1, FIG.
(C) is a principal part expanded sectional view which shows the state of the expansion device for road bridges when the floor board of a road bridge expands and contracts.
【図３】道路橋の継ぎ目部に設置された従来の道路橋用
伸縮装置の一例を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing an example of a conventional road bridge expansion / contraction device installed at a joint of a road bridge.
【図４】道路橋の継ぎ目部に設置された従来の道路橋用
伸縮装置の他の例を示す縦断面図である。FIG. 4 is a longitudinal sectional view showing another example of a conventional road bridge expansion / contraction device installed at a joint of a road bridge.
１ 継ぎ目部 ２ 道路橋用伸縮
装置 ３ 遊間 ４ 床板 ４ａ，４ｂ 端部 ５ 床面舗装層 ２１ 支持台 ２１ａ 傾斜面 ２２ 橋架板 ２３ 継ぎ目部舗
装層DESCRIPTION OF SYMBOLS 1 Joint part 2 Telescopic device for road bridges 3 Play space 4 Floor plate 4a, 4b End part 5 Floor surface pavement layer 21 Support 21a Inclined surface 22 Bridge plate 23 Joint part pavement layer
Claims (1)
た前後の床板端部上にそれぞれ該遊間側を高くした傾斜
面を上面に有する支持台を固定し、これら両支持台の傾
斜面間にまたがって橋架板を摺動可能に載置し、この橋
架板上の前記継ぎ目部に伸縮性舗装材を充填した道路橋
用伸縮装置。1. A support base having an inclined surface with its play side raised on its upper surface is fixed on the front and rear ends of the floorboards which are arranged via play spaces facing the seam, and the support bases are inclined. An expansion device for a road bridge, wherein a bridge plate is slidably mounted between the surfaces, and the joint portion on the bridge plate is filled with an elastic pavement material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31660896A JPH10159007A (en) | 1996-11-27 | 1996-11-27 | Expansion device for road bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31660896A JPH10159007A (en) | 1996-11-27 | 1996-11-27 | Expansion device for road bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10159007A true JPH10159007A (en) | 1998-06-16 |
Family
ID=18078971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31660896A Pending JPH10159007A (en) | 1996-11-27 | 1996-11-27 | Expansion device for road bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10159007A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015021343A (en) * | 2013-07-22 | 2015-02-02 | 鹿島建設株式会社 | Construction method of coating floor |
| CN107974880A (en) * | 2017-12-06 | 2018-05-01 | 中建空列（北京）工程设计研究院有限公司 | Track joint connecting equipment and the track for including the track joint connecting equipment |
| JP2019060146A (en) * | 2017-09-27 | 2019-04-18 | 横浜ゴム株式会社 | Filling structure for road bridge expansion device |
-
1996
- 1996-11-27 JP JP31660896A patent/JPH10159007A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015021343A (en) * | 2013-07-22 | 2015-02-02 | 鹿島建設株式会社 | Construction method of coating floor |
| JP2019060146A (en) * | 2017-09-27 | 2019-04-18 | 横浜ゴム株式会社 | Filling structure for road bridge expansion device |
| CN107974880A (en) * | 2017-12-06 | 2018-05-01 | 中建空列（北京）工程设计研究院有限公司 | Track joint connecting equipment and the track for including the track joint connecting equipment |
| CN107974880B (en) * | 2017-12-06 | 2023-09-26 | 中建空列（北京）工程设计研究院有限公司 | Rail joint connection device and rail comprising same |
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