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JP7192246B2 - Water stoppage device for road bridge expansion and contraction device - Google Patents
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JP7192246B2 - Water stoppage device for road bridge expansion and contraction device - Google Patents

Water stoppage device for road bridge expansion and contraction device Download PDF

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JP7192246B2
JP7192246B2 JP2018094367A JP2018094367A JP7192246B2 JP 7192246 B2 JP7192246 B2 JP 7192246B2 JP 2018094367 A JP2018094367 A JP 2018094367A JP 2018094367 A JP2018094367 A JP 2018094367A JP 7192246 B2 JP7192246 B2 JP 7192246B2
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JP2019199734A (en
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雅幸 礒野
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Yokohama Rubber Co Ltd
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Description

本発明は道路橋伸縮装置用止水装置に関する。 TECHNICAL FIELD The present invention relates to a water stop device for a road bridge expansion device.

道路橋は、道路橋を構成する要素として、例えば、橋軸方向の両端に配置された橋台と、橋台の間に橋軸方向に並べられた１つ以上の床版とを含んで構成されている。
橋台と床版との継ぎ目部、および、床版同士の継ぎ目部は、道路橋伸縮装置を含んで構成されている。
道路橋伸縮装置は、一般に、道路橋を構成する要素の互いに対向する端部、すなわち、互いに対向する橋台の端部と床版の端部、あるいは、互いに対向する床版の端部にそれぞれ取着された一対の継手部材を含んで構成されている。
一対の継手部材の端部には、橋軸方向と直交する方向に凹凸状の隙間が延在形成され、この凹凸状の隙間は、床版の橋軸方向の伸縮に応じ増減し、床版の伸縮を吸収している。
道路橋伸縮装置用止水装置は、このような一対の継手部材の下方に配置され、橋軸方向と直交する方向に弾性変形可能で、一対の継手部材の凹凸状の隙間から侵入した雨水の道路橋の下方への流下を防止するものである。 Road bridges are composed of, for example, abutments arranged at both ends in the axial direction, and one or more floor slabs arranged in the axial direction between the abutments, as elements constituting the road bridge. there is
A joint portion between the abutment and the floor slab and a joint portion between the floor slabs are configured including a road bridge expansion/contraction device.
Road bridge expansion joints are generally installed at the mutually opposing ends of the elements that make up the highway bridge, that is, the mutually opposing abutment and deck slab ends, or the mutually opposing deck slab ends. It comprises a pair of joint members attached to each other.
At the ends of the pair of joint members, an uneven gap is formed extending in a direction orthogonal to the axis direction of the bridge. It absorbs the expansion and contraction of
A water stop device for a road bridge expansion device is arranged below such a pair of joint members, is elastically deformable in a direction perpendicular to the direction of the bridge axis, and is capable of stopping rainwater that has entered through uneven gaps between the pair of joint members. It is intended to prevent the flow down the road bridge.

道路橋伸縮装置用止水装置はゴムシート構造体を含んで構成され、ゴムシート構造体は、道路橋を構成する要素の互いに対向する端部に配置される両側の側板部と、両側の側板部の下端を接続する下板部とを有し、ゴムシート構造体の両側の側板部の取り付けは、次のようになされている。
すなわち、道路橋を構成する要素の互いに対向する端部には、継手部材を取着するための後打ちコンクリート充填用の凹部が設けられており、この凹部の底面からは複数の鉄筋が突出している。
まず、ゴムシート構造体の両側の側板部を、それら複数の鉄筋を介して道路橋を構成する要素の互いに対向する端部に取着するための取り付け金物を組み立てる。
そして、それら複数の鉄筋に溶接してコンクリート充填用の凹部の底面に取り付け金物を取着し、この取り付け金物にゴムシート構造体の両側の側板部を、橋軸方向と直交する方向に間隔をおいた複数箇所においてボルトを用いて取り付けるようにしている。 A water stop device for a road bridge expansion device includes a rubber sheet structure, and the rubber sheet structure includes side plate portions on both sides disposed at mutually opposing ends of elements constituting the road bridge, and side plates on both sides. The side plate portions on both sides of the rubber sheet structure are attached as follows.
That is, the ends of the elements that make up the road bridge are provided with recesses for filling with post-cast concrete for attaching joint members, and a plurality of reinforcing bars protrude from the bottom surface of the recesses. there is
First, mounting metal fittings are assembled for mounting the side plate portions on both sides of the rubber sheet structure to the opposite ends of the elements constituting the road bridge via the plurality of reinforcing bars.
Then, the metal fittings are welded to the plurality of reinforcing bars and attached to the bottom surface of the recess for concrete filling. It is attached using bolts at a plurality of locations.

特開２０１８－３３１５JP 2018-3315

そのため、道路橋伸縮装置用止水装置の設置には、取り付け金物の組み立て作業、取り付け金物の鉄筋への溶接作業、ゴムシート構造体の両側の側板部を複数箇所においてボルトを用いて取り付け金物に取り付ける取り付け作業を要し、道路橋伸縮装置用止水装置の設置に手間取り、何らかの改善が求められていた。
本発明は前記事情に鑑み案出されたものであって、本発明の目的は、短期間で道路橋伸縮装置用止水装置の設置を行なえ、道路橋伸縮装置用止水装置の設置の工期の短縮化を図り、コストダウンを図る上で有利な道路橋伸縮装置用止水装置を提供することにある。 Therefore, the installation of the water stop device for the expansion and contraction device of the road bridge requires assembly of the mounting hardware, welding of the mounting hardware to the rebar, and attachment of the side plates on both sides of the rubber sheet structure to the mounting hardware using bolts at multiple locations. Installation work was required, and it took time to install the water stop device for the expansion and contraction device of the road bridge, and some improvement was required.
The present invention has been devised in view of the above circumstances, and an object of the present invention is to enable the installation of a water stoppage device for a road bridge expansion and contraction device in a short period of time, and the construction period for installing the water stoppage device for a road bridge expansion and contraction device. To provide a water stop device for a road bridge expansion and contraction device which is advantageous in shortening the length and reducing the cost.

上述の目的を達成するため本発明は、道路橋を構成する要素の互いに対向する端部に、それぞれ前記対向する前記端部に向けて開放状でかつ上方に開放状の凹部が設けられ、
前記道路橋を構成する要素の互いに対向する端部と共に前記道路橋の継ぎ目部を構成し前記互いに対向する端部の端面間に前記道路橋の橋軸方向と直交する方向に延在形成される遊間の伸縮を吸収する道路橋伸縮装置が、前記凹部に充填された後打ちコンクリートを介して取り付けられ、前記道路橋を構成する要素の互いに対向する端部の間で前記道路橋伸縮装置の下方に設けられる道路橋伸縮装置用止水装置であって、前記道路橋伸縮装置用止水装置は、前記道路橋の橋軸方向に延在する幅と前記橋軸方向と直交する方向に延在する長さとを有するゴムシート構造体を備え、前記ゴムシート構造体は、前記幅方向の両端に設けられ前記互いに対向する端部の端面にそれぞれ接触可能でそれらの間は上方に開放されている両側の側板部と、前記橋軸方向と直交する方向における前記道路橋伸縮装置の長さ方向の全長にわたって延在すると共に前記幅方向に延在して前記両側の側板部の下端を接続する下板部と、前記両側の側板部と一体的に設けられ前記下板部の上方で前記幅方向に延在して前記両側の側板部の上下方向の中間部を接続し、前記ゴムシート構造体に外力が掛かっていない状態で平面上を延在する第１の形状となり、前記両側の側板部が前記互いに対向する端部の端面に接触した状態で前記第１の形状から湾曲変形され前記第１の形状に戻ろうとする弾性力により前記両側の側板部を前記互いに対向する端部の端面に弾接させる反力板部と、前記両側の側板部から前記幅方向の外側に突設され前記両側の側板部が前記互いに対向する端部の端面に弾接した状態で前記凹部の底面に係止して前記ゴムシート構造体が前記対向する端部間に吊り下げられた状態を保持し前記凹部に前記後打ちコンクリートが充填されることで前記ゴムシート構造体を前記互いに対向する端部間に設置する鋼製の係止部材とを備え、平面視した場合、橋軸方向と直交する方向において前記下板部の両端は前記反力板部および前記道路橋伸縮装置の両端よりも外側に突出し、前記下板部の橋軸方向と直交する方向の両端に前記両側の側板部を接続する起立壁が起立され、前記下板部の橋軸方向と直交する方向の両端寄りの箇所に、前記下板部上に溜まった雨水排出用の排水管部が下方に突設されていることを特徴とする。
また、本発明は、道路橋を構成する要素の互いに対向する端部に、それぞれ前記対向する前記端部に向けて開放状でかつ上方に開放状の凹部が設けられ、前記道路橋を構成する要素の互いに対向する端部と共に前記道路橋の継ぎ目部を構成し前記互いに対向する端部の端面間に前記道路橋の橋軸方向と直交する方向に延在形成される遊間の伸縮を吸収する道路橋伸縮装置が、前記凹部に充填された後打ちコンクリートを介して取り付けられ、前記道路橋を構成する要素の互いに対向する端部の間で前記道路橋伸縮装置の下方に設けられる道路橋伸縮装置用止水装置であって、前記道路橋伸縮装置用止水装置は、前記道路橋の橋軸方向に延在する幅と前記橋軸方向と直交する方向に延在する長さとを有するゴムシート構造体を備え、前記ゴムシート構造体は、前記幅方向の両端に設けられ前記互いに対向する端部の端面にそれぞれ接触可能でそれらの間は上方に開放されている両側の側板部と、前記両側の側板部と一体的に設けられ前記橋軸方向と直交する方向における前記道路橋伸縮装置の長さ方向の全長にわたって延在すると共に前記幅方向に延在して前記両側の側板部の上下方向の中間部を接続し、前記ゴムシート構造体に外力が掛かっていない状態で平面上を延在する第３の形状となり、前記両側の側板部が前記互いに対向する端部の端面に接触した状態で前記第３の形状から湾曲変形され前記第３の形状に戻ろうとする弾性力により前記両側の側板部を前記互いに対向する端部の端面に弾接させる反力板部と、前記両側の側板部から前記幅方向の外側に突設され前記両側の側板部が前記互いに対向する端部の端面に弾接した状態で前記凹部の底面に係止して前記ゴムシート構造体が前記対向する端部間に吊り下げられた状態を保持し前記凹部に前記後打ちコンクリートが充填されることで前記ゴムシート構造体を前記互いに対向する端部間に設置する鋼製の係止部材とを備え、平面視した場合、橋軸方向と直交する方向において前記反力板部の両端は前記道路橋伸縮装置の両端よりも外側に突出し、前記反力板部の橋軸方向と直交する方向の両端に前記両側の側板部を接続する起立壁が起立され、前記反力板部の橋軸方向と直交する方向の両端寄りの箇所に、前記反力板部上に溜まった雨水排出用の排水管部が下方に突設されていることを特徴とする。
また、本発明は、前記反力板部は、前記ゴムシート構造体の前記長さ方向の全長にわたって設けられていることを特徴とする。
また、本発明は、前記反力板部は、前記ゴムシート構造体の前記長さ方向に間隔をおいて複数設けられていることを特徴とする。
また、本発明は、前記反力板部に、前記反力板部の橋軸方向である幅方向に延在するばね鋼板が埋め込まれ、前記ばね鋼板は、前記ゴムシート構造体に外力が掛かっていない状態で前記第１の形状に沿って延在する第２の形状となり、前記両側の側板部が前記互いに対向する端部の端面に接触した状態で前記第２の形状から湾曲変形され前記第２の形状に戻ろうとする弾性力により前記反力板部と協働して前記両側の側板部を前記互いに対向する端部の端面に弾接させることを特徴とする。
また、本発明は、前記両側の側板部に、剛性を有し前記係止部材を支持する支持板が埋め込まれ、前記両側の側板部が、道路橋を構成する要素の互いに対向する端部の端面に弾接された状態で前記支持板は、前記端部の端面に平行することを特徴とする。
また、本発明は、前記係止部材は、前記支持板の上部から突設され、前記支持板の下部は、前記反力板部が接続する前記側板部の箇所に位置していることを特徴とする。
また、本発明は、前記両側の側板部が互いに近づく方向に変位する際に、前記反力板部に、他の箇所に比べて率先して変形し前記湾曲変形する方向を定める変形促進部が設けられていることを特徴とする。
また、本発明は、前記端部の端面に圧接される前記両側の側板部の外面に、上方に至るにつれて前記端面から次第に離れる傾斜面が形成されていることを特徴とする。 In order to achieve the above-mentioned object, the present invention provides, at opposite ends of elements constituting a road bridge, recesses that are open toward the opposite ends and open upward,
Together with the ends facing each other of the elements constituting the road bridge, they form joints of the road bridge and extend between the end surfaces of the ends facing each other in a direction perpendicular to the axis direction of the road bridge. A road bridge expansion and contraction device that absorbs expansion and contraction of the gap is attached via the post-cast concrete filled in the recess, and is positioned below the road bridge expansion and contraction device between the mutually facing ends of the elements constituting the road bridge. wherein the water stop device for the road bridge expansion and contraction device has a width extending in the axial direction of the road bridge and a direction perpendicular to the axial direction of the road bridge The rubber sheet structure is provided at both ends in the width direction, and the rubber sheet structure is provided at both ends in the width direction so as to be able to contact the end faces of the mutually opposing ends, and the gap therebetween is open upward. Side plate portions on both sides, and a lower portion extending over the entire length of the road bridge expansion and contraction device in the direction orthogonal to the bridge axis direction and extending in the width direction to connect the lower ends of the side plate portions on both sides. a plate portion integrally provided with the side plate portions on both sides and extending in the width direction above the lower plate portion to connect vertical intermediate portions of the side plate portions on both sides; The side plate portions on both sides are curvedly deformed from the first shape while being in contact with the end surfaces of the mutually opposing end portions. a reaction force plate portion for elastically contacting the side plate portions on both sides with the end surfaces of the mutually opposing end portions by an elastic force tending to return to the shape 1; The side plate portions on both sides are engaged with the bottom surface of the recess in a state of elastic contact with the end surfaces of the mutually opposing end portions to maintain the state in which the rubber sheet structure is suspended between the opposing end portions. a steel locking member that installs the rubber sheet structure between the opposing ends by filling the recess with the post-cast concrete ; Both ends of the lower plate portion protrude outward from both ends of the reaction plate portion and the road bridge expansion and contraction device, and the side plate portions on both sides are connected to both ends of the lower plate portion in a direction perpendicular to the bridge axis direction. An upright wall is erected, and drainpipe portions for discharging rainwater collected on the lower plate portion protrude downward at locations near both ends of the lower plate portion in a direction orthogonal to the bridge axis direction. Characterized by
Further, according to the present invention, in the end portions of the elements constituting the road bridge, opposite ends are provided with concave portions that are open toward the opposite ends and open upward, thereby forming the road bridge. The joint portion of the road bridge is formed together with the ends of the elements facing each other, and the expansion and contraction of the gap formed between the end surfaces of the ends facing each other and extending in the direction perpendicular to the axial direction of the road bridge is absorbed. A road bridge expansion and contraction device is attached via the post-cast concrete filled in the recess, and is provided below the road bridge expansion and contraction device between the mutually facing ends of the elements constituting the road bridge. The water stop device for road bridge expansion and contraction device, the water stop device for road bridge expansion and contraction device is made of rubber having a width extending in the axial direction of the road bridge and a length extending in a direction orthogonal to the bridge axial direction. a sheet structure, wherein the rubber sheet structure includes side plate portions provided at both ends in the width direction, the side plate portions being capable of contacting the end surfaces of the mutually opposing end portions, respectively, and the space therebetween being open upward ; It is provided integrally with the side plate portions on both sides, extends over the entire length of the road bridge expansion and contraction device in the direction perpendicular to the axial direction of the bridge, and extends in the width direction to extend in the width direction of the side plate portions on both sides . A third shape connecting the middle portions in the vertical direction and extending on a plane in a state where no external force is applied to the rubber sheet structure, and the side plate portions on both sides are connected to the end faces of the end portions facing each other. a reaction force plate portion that causes the side plate portions on both sides to be in elastic contact with the end surfaces of the mutually opposing end portions by an elastic force that bends and deforms from the third shape in the contact state and returns to the third shape; The side plate portions protrude outward in the width direction from the side plate portions on both sides and are engaged with the bottom surface of the recess in a state in which the side plate portions are in elastic contact with the end surfaces of the mutually opposing end portions, thereby forming the rubber sheet structure. A steel locking member that maintains a suspended state between the opposing ends and installs the rubber sheet structure between the opposing ends by filling the recess with the post-cast concrete. When viewed in plan, both ends of the reaction plate portion protrude outward from both ends of the road bridge expansion and contraction device in a direction perpendicular to the bridge axis direction, and are perpendicular to the bridge axis direction of the reaction plate portion Upright walls that connect the side plate portions on both sides are erected at both ends of the direction, and rainwater collected on the reaction plate portion is disposed near both ends in the direction perpendicular to the axis direction of the reaction plate portion for discharging rainwater. characterized in that the drain pipe portion of the is protruded downward .
Further , the present invention is characterized in that the reaction force plate portion is provided over the entire length of the rubber sheet structure in the length direction.
Further, the present invention is characterized in that a plurality of the reaction force plate portions are provided at intervals in the length direction of the rubber sheet structure.
Further, according to the present invention, a spring steel plate extending in the width direction, which is the bridge axis direction of the reaction plate portion, is embedded in the reaction plate portion, and the spring steel plate prevents external force from being applied to the rubber sheet structure. It assumes a second shape extending along the first shape in a state in which it is not closed, and is bent and deformed from the second shape in a state in which the side plate portions on both sides are in contact with the end faces of the mutually opposing end portions. It is characterized in that the side plate portions on both sides are brought into elastic contact with the end faces of the end portions facing each other in cooperation with the reaction plate portion by an elastic force that tends to return to the second shape.
Further, according to the present invention, support plates having rigidity and supporting the locking members are embedded in the side plate portions on both sides, and the side plate portions on both sides are provided at the opposite ends of the elements constituting the road bridge. The support plate is parallel to the end surface of the end portion while elastically contacting the end surface.
Further, according to the present invention, the locking member protrudes from an upper portion of the support plate, and the lower portion of the support plate is positioned at a portion of the side plate portion to which the reaction plate portion is connected. and
Further, in the present invention, when the side plate portions on both sides are displaced toward each other, the reaction force plate portion includes a deformation promoting portion that deforms more than other portions and determines the direction of the bending deformation. is provided.
Further, the present invention is characterized in that the outer surfaces of the side plate portions on both sides that are pressed against the end surfaces of the end portions are formed with inclined surfaces that gradually separate from the end surfaces as they go upward.

本発明によれば、係止部材を凹部の底面に係止させ、弾接部が両側の側板部を道路橋を構成する要素の互いに対向する端部に弾接させることで、道路橋を構成する要素の互いに対向する端部の間にゴムシート構造体が簡単に組み付けられ、ゴム構造体は、凹部に充填される後打ちコンクリートにより道路橋伸縮装置と共に設置される。
そのため、従来のように、取り付け金物の組み立て作業や、取り付け金物の鉄筋への溶接作業、ゴムシート構造体の両側の側板部を複数箇所においてボルトを用いて取り付け金物に取り付ける取り付け作業を省略でき、道路橋伸縮装置用止水装置の設置を簡単に確実に行なう上で有利となる。
また、両側の側板部と、反力板部とを備え、下板部を備えていない本発明によれば、ゴムシート構造体の構造の簡単化、軽量化を図りつつ、道路橋伸縮装置用止水装置の設置を簡単に確実に行なう上で有利となる。
また、反力板部を有する本発明によれば、止水装置の部品点数を削減し、設置作業の簡単化を図る上で有利となる。
また、反力板部は、ゴムシート構造体の長さ方向の全長にわたって設けられていてもよく、ゴムシート構造体の長さ方向に間隔をおいて複数設けられていてもよく、どちらにするかは、要求される弾接力に応じて適宜決定される。すなわち、反力板部の長さにより、要求される弾接力を得ることが可能となる。
また、反力板部の内部にばね鋼板を設けた本発明によれば、両側の側板部を、道路橋を構成する要素の互いに対向する端部に弾接する際に大きな弾接力を得る上で有利となる。
また、両側の側板部に、係止部材を支持する支持板が埋め込まれた本発明によれば、道路橋を構成する要素の互いに対向する端部に対する両側の側板部の密着性を高め、雨水の下方への落下を阻止する上で有利となる。
この場合、支持板の下部を、反力板部が接続する側板部の箇所に位置させると、互いに対向する端部に対する両側の側板部の密着性を高め、雨水の下方への落下を阻止する上でより有利となる。
また、変形促進部を備える本発明によれば、反力板部が湾曲変形する方向を定めることができるので、ゴムシート構造体の設置を簡単に行なう上で有利となり、道路橋伸縮装置用止水装置の外観性を簡単に確実に高める上で有利となる。
また、傾斜面を備える本発明によれば、道路橋を構成する要素の互いに対向する端部の端面に凹凸があった場合であっても、雨水の下方への落下を阻止する上でより有利となる。 According to the present invention, the road bridge is configured by locking the locking member to the bottom surface of the recess, and elastically contacting the side plate portions on both sides with the opposite ends of the elements constituting the road bridge. A rubber sheet structure is simply assembled between the opposing ends of the two elements, and the rubber structure is installed with the road bridge expansion device by post-casting concrete filling the recess.
Therefore, it is possible to omit the work of assembling the mounting hardware, the work of welding the mounting hardware to the reinforcing bars, and the mounting work of attaching the side plate parts on both sides of the rubber sheet structure to the mounting hardware using bolts at multiple locations, as in the past. This is advantageous in simply and reliably installing the water stoppage device for the expansion and contraction device of the road bridge.
In addition, according to the present invention, which has side plate portions on both sides and a reaction plate portion and does not have a lower plate portion, the structure of the rubber sheet structure can be simplified and reduced in weight, and the This is advantageous in that the water stop device can be easily and reliably installed.
Further, according to the present invention having the reaction plate portion, it is advantageous in reducing the number of parts of the water stop device and simplifying the installation work.
Further, the reaction force plate portion may be provided over the entire length of the rubber sheet structure, or may be provided in plurality at intervals in the length direction of the rubber sheet structure. is appropriately determined according to the required elastic contact force. That is, it is possible to obtain the required elastic contact force depending on the length of the reaction plate portion.
In addition, according to the present invention in which the spring steel plate is provided inside the reaction plate portion, a large elastic contact force can be obtained when the side plate portions on both sides are elastically contacted with the opposite end portions of the elements constituting the road bridge. be advantageous.
Further, according to the present invention in which support plates for supporting locking members are embedded in the side plate portions on both sides, the adhesion of the side plate portions on both sides to the mutually facing ends of the elements constituting the road bridge is enhanced, and rainwater is removed. It is advantageous in preventing the downward fall of the
In this case, if the lower portion of the support plate is positioned at the side plate portion to which the reaction plate portion is connected, the adhesion of the side plate portions on both sides to the opposing end portions is enhanced, thereby preventing rainwater from falling downward. more advantageous over
Further, according to the present invention, which is provided with the deformation promoting portion, the direction in which the reaction force plate portion bends and deforms can be determined, which is advantageous in facilitating the installation of the rubber sheet structure. This is advantageous in simply and reliably enhancing the appearance of the water system.
In addition, according to the present invention having inclined surfaces, it is more advantageous to prevent rainwater from falling downward even when the end surfaces of the mutually facing ends of the elements constituting the road bridge have unevenness. becomes.

第１の実施の形態のゴムシート構造体が、道路橋を構成する要素の互いに対向する端部間に設置された状態の断面図である。1 is a cross-sectional view of a state in which the rubber sheet structure of the first embodiment is installed between opposing ends of elements constituting a road bridge; FIG. 外力が掛かっていない状態の第１の実施の形態のゴムシート構造体の断面図である。1 is a cross-sectional view of a rubber sheet structure according to a first embodiment in a state where no external force is applied; FIG. 第１の実施の形態のゴムシート構造体の長さ方向の中間部の斜視図である。1 is a perspective view of an intermediate portion in the length direction of a rubber sheet structure according to a first embodiment; FIG. 第１の実施の形態のゴムシート構造体の長さ方向の端部の斜視図である。FIG. 2 is a perspective view of an end in the length direction of the rubber sheet structure of the first embodiment; 第２の実施の形態のゴムシート構造体の長さ方向の中間部の斜視図である。It is a perspective view of the middle part of the length direction of the rubber sheet structure of 2nd Embodiment. （Ａ）は外力が掛かっていない状態の第３の実施の形態のゴムシート構造体の断面図、（Ｂ）は第３の実施の形態のゴムシート構造体の長さ方向の中間部の斜視図である。(A) is a cross-sectional view of the rubber sheet structure of the third embodiment in which no external force is applied, and (B) is a perspective view of the intermediate portion in the length direction of the rubber sheet structure of the third embodiment. It is a diagram. 第３の実施の形態のゴムシート構造体が、道路橋を構成する要素の互いに対向する端部間に設置された状態の断面図である。FIG. 11 is a cross-sectional view showing a state in which the rubber sheet structure of the third embodiment is installed between mutually opposing ends of elements constituting a road bridge; （Ａ）は外力が掛かっていない状態の第４の実施の形態のゴムシート構造体の断面図、（Ｂ）は第４の実施の形態のゴムシート構造体が、道路橋を構成する要素の互いに対向する端部間に設置された状態の断面図である。(A) is a cross-sectional view of the rubber sheet structure of the fourth embodiment in a state where no external force is applied; FIG. 4 is a cross-sectional view of a state installed between ends facing each other; （Ａ）は外力が掛かっていない状態の第５の実施の形態の係止部材箇所のゴムシート構造体の断面図、（Ｂ）は外力が掛かっていない状態の第５の実施の形態の係止部材がない箇所のゴムシート構造体の断面図、（Ｃ）は第５の実施の形態のゴムシート構造体が、道路橋を構成する要素の互いに対向する端部間に設置された状態の要部の拡大断面図である。(A) is a cross-sectional view of the rubber sheet structure at the locking member location of the fifth embodiment in a state where no external force is applied; A cross-sectional view of the rubber sheet structure where there is no stopper member, and (C) shows a state in which the rubber sheet structure of the fifth embodiment is installed between the mutually facing ends of the elements constituting the road bridge. 4 is an enlarged cross-sectional view of a main part; FIG. （Ａ）～（Ｄ）は外力が掛かっていない状態の第６の実施の形態のゴムシート構造体の断面図である。(A) to (D) are cross-sectional views of the rubber sheet structure of the sixth embodiment in a state where no external force is applied. （Ａ）～（Ｃ）は外力が掛かっていない状態の第６の実施の形態のゴムシート構造体の断面図である。(A) to (C) are cross-sectional views of the rubber sheet structure of the sixth embodiment in a state where no external force is applied. （Ａ）は外力が掛かっていない状態の第７の実施の形態のゴムシート構造体の断面図、（Ｂ）は第７の実施の形態のゴムシート構造体が、道路橋を構成する要素の互いに対向する端部間に設置された状態の断面図である。(A) is a cross-sectional view of the rubber sheet structure of the seventh embodiment when no external force is applied; FIG. 4 is a cross-sectional view of a state installed between ends facing each other; 第７の実施の形態のゴムシート構造体の長さ方向の端部の斜視図である。FIG. 12 is a perspective view of the end in the length direction of the rubber sheet structure of the seventh embodiment;

次に、図面を参照して本実施の形態について説明する。
（第１の実施の形態）
図１に示すように、道路橋伸縮装置１０は、道路橋１２を構成する要素の互いに対向する端部１４、すなわち、橋軸方向において互いに対向する橋台の端部１４と床版１６の端部１４、あるいは、互いに対向する床版１６の端部１４にそれぞれ取着された一対の継手部材１８を含んで構成されている。
図１では、道路橋伸縮装置１０が互いに対向する床版１６の端部１４間に設けられている場合を示し、図１において符号２０は、床版１６の上面に形成された橋面舗装を示している。
互いに対向する床版１６の端部１４には、継手部材１８を取着するための後打ちコンクリート充填用の凹部２２が設けられており、凹部２２は対向する端部１４に向けて開放状でかつ上方に開放状に形成されている。
この凹部２２の底面２２Ａからは複数の鉄筋２４が突出している。 Next, this embodiment will be described with reference to the drawings.
(First embodiment)
As shown in FIG. 1, the road bridge expansion/contraction device 10 includes the ends 14 of the elements constituting the road bridge 12 facing each other, that is, the ends 14 of the abutment and the ends of the deck 16 facing each other in the axial direction of the bridge. 14, or a pair of joint members 18 respectively attached to the ends 14 of floor slabs 16 facing each other.
FIG. 1 shows a case where the road bridge expansion and contraction device 10 is provided between the ends 14 of the floor slabs 16 facing each other. In FIG. showing.
The ends 14 of the floor slabs 16 facing each other are provided with recesses 22 for filling post-cast concrete for attaching joint members 18, and the recesses 22 are open toward the ends 14 facing each other. Moreover, it is formed in an upwardly open shape.
A plurality of reinforcing bars 24 protrude from the bottom surface 22A of the recess 22. As shown in FIG.

一対の継手部材１８は鋼材製で、橋軸方向と直交する方向に延在する長さを有している。
一対の継手部材１８は、凹部２２の底面２２Ａに載置される側板部２６と、側板部２６の上端から突設された上板部２８とを備えている。
側板部２６の背面から突設された複数のアンカー部材３０は、凹部２２の底面２２Ａから突設された複数の鉄筋２４に結合された状態で、後打ちコンクリート３２中に埋設されている。
一対の継手部材１８の側板部２６の互いに対向する表面は、互いに対向する床版１６の端部１４の端面１４Ａと同一面上に配置されている。
一対の継手部材１８の各上板部２８が対向する箇所に、平面視した場合に、橋軸方向と直交する方向に凹凸状の隙間Ｓが延在形成され、この凹凸状の隙間Ｓは、床版１６の橋軸方向の伸縮に応じ増減し、床版１６の伸縮を吸収する。
なお、本実施の形態では、一対の継手部材１８の側板部２６の下端が凹部２２の底面２２Ａに載置される場合について説明しているが、側板部２６の下端が凹部２２の底面２２Ａの上方に離れた箇所に配置される場合など、一対の継手部材１８の形状や配置構造には、従来公知の様々な構造が採用可能である。 The pair of joint members 18 is made of steel and has a length extending in a direction orthogonal to the direction of the bridge axis.
The pair of joint members 18 includes a side plate portion 26 placed on the bottom surface 22A of the recess 22 and an upper plate portion 28 projecting from the upper end of the side plate portion 26 .
A plurality of anchor members 30 projecting from the back surface of the side plate portion 26 are embedded in the post-cast concrete 32 in a state of being coupled to a plurality of reinforcing bars 24 projecting from the bottom surface 22A of the recess 22.
The mutually facing surfaces of the side plate portions 26 of the pair of joint members 18 are arranged on the same plane as the end surfaces 14A of the end portions 14 of the floor slabs 16 that face each other.
An uneven gap S is formed extending in a direction orthogonal to the bridge axis direction when viewed from above at a location where the upper plate portions 28 of the pair of joint members 18 face each other. It increases or decreases according to the expansion and contraction of the floor slab 16 in the bridge axis direction, and absorbs the expansion and contraction of the floor slab 16 .
In this embodiment, the case where the lower ends of the side plate portions 26 of the pair of joint members 18 are placed on the bottom surface 22A of the recess 22 is described. Various conventionally known structures can be adopted for the shape and arrangement structure of the pair of joint members 18, such as when they are arranged at a location apart from above.

道路橋伸縮装置用止水装置３４は、一対の継手部材１８の下方に配置され、一対の継手部材１８の凹凸状の隙間Ｓから侵入した雨水の道路橋１２の下方への流下を防止するものである。
道路橋伸縮装置用止水装置３４は、道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａ間の遊間を閉塞するゴムシート構造体３６を含んで構成されている。
ゴムシート構造体３６は、道路橋１２の橋軸方向に延在する幅と橋軸方向と直交する方向に延在する長さとを有している。
図２に示すように、ゴムシート構造体３６は、両側の側板部３８と、下板部４０と、係止部材４２と、弾接部４４とを備えている。
両側の側板部３８は、ゴムシート構造体３６の幅方向の両端に設けられ、道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａにそれぞれ接触可能な板状に形成されている。すなわち、両側の側板部３８は、橋軸方向において互いに対向する床版１６の端部１４の端面１４Ａに、あるいは、互いに対向する床版１６の端部１４の端面１４Ａから一対の継手部材１８の側板部２６の表面にわたって、あるいは、一対の継手部材１８の側板部２６の表面に、あるいは、床版１６の端部１４の端面１４Ａと同一面上に形成された後打ちコンクリート３２の面にそれぞれ接触可能な板状に形成されている。
本実施の形態では、両側の側板部３８は、互いに対向する床版１６の端部１４の端面１４Ａから一対の継手部材１８の側板部２６の表面にわたって接触可能に設けられている。 The water stop device 34 for the road bridge expansion and contraction device is arranged below the pair of joint members 18 and prevents rainwater that has entered through the uneven gaps S between the pair of joint members 18 from flowing down the road bridge 12. is.
The water stop device 34 for the road bridge expansion device includes a rubber sheet structure 36 that closes the gap between the end faces 14A of the ends 14 facing each other of the elements constituting the road bridge 12. As shown in FIG.
The rubber sheet structure 36 has a width extending in the axial direction of the road bridge 12 and a length extending in a direction orthogonal to the axial direction.
As shown in FIG. 2 , the rubber sheet structure 36 includes side plate portions 38 on both sides, a lower plate portion 40 , a locking member 42 and an elastic contact portion 44 .
The side plate portions 38 on both sides are provided at both ends in the width direction of the rubber sheet structure 36, and are formed in a plate shape capable of contacting the end faces 14A of the end portions 14 facing each other of the elements constituting the road bridge 12, respectively. . That is, the side plate portions 38 on both sides are connected to the end faces 14A of the ends 14 of the floor slabs 16 facing each other in the bridge axis direction, or from the end faces 14A of the ends 14 of the floor slabs 16 facing each other to the pair of joint members 18. Over the surface of the side plate portion 26, or on the surface of the side plate portion 26 of the pair of joint members 18, or on the surface of post-cast concrete 32 formed on the same plane as the end surface 14A of the end portion 14 of the floor slab 16, respectively. It is formed in a plate shape that can be contacted.
In the present embodiment, the side plate portions 38 on both sides are provided so as to be in contact with the surfaces of the side plate portions 26 of the pair of joint members 18 from the end faces 14A of the ends 14 of the floor slabs 16 facing each other.

両側の側板部３８は、本実施の形態では、橋軸方向と直交する方向における道路橋伸縮装置１０の長さ方向の全長にわたって延在しているが、道路橋伸縮装置１０の長さ方向に間隔をおき複数設けられていてもよい。
下板部４０は、一対の継手部材１８の凹凸状の隙間Ｓから下方に落下する雨水を受ける箇所であり、橋軸方向と直交する方向における道路橋伸縮装置１０の長さ方向の全長にわたって延在している。
下板部４０は、両側の側板部３８の下端を接続し、下板部４０の幅方向の中央部は平坦に形成され、下板部４０の幅方向の両側部は湾曲状に形成され、下板部４０の幅方向の両端を除いて下板部４０は均一の厚さで形成されている。 In this embodiment, the side plate portions 38 on both sides extend over the entire length of the road bridge expansion/contraction device 10 in the direction orthogonal to the bridge axis direction. A plurality of them may be provided at intervals.
The lower plate portion 40 is a portion that receives rainwater falling downward from the uneven gaps S of the pair of joint members 18, and extends over the entire length of the road bridge expansion/contraction device 10 in the direction orthogonal to the bridge axis direction. exist.
The lower plate portion 40 connects the lower ends of the side plate portions 38 on both sides, the central portion in the width direction of the lower plate portion 40 is formed flat, and both side portions in the width direction of the lower plate portion 40 are formed in a curved shape The lower plate portion 40 is formed with a uniform thickness except for both ends in the width direction of the lower plate portion 40 .

弾接部４４は、両側の側板部３８を、道路橋１２を構成する要素互いに対向する端部１４の端面１４Ａに弾接させる箇所である。
本実施の形態では、弾接部４４は、ゴムシート構造体３６に一体に形成され、下板部４０の上方でゴムシート構造体３６の幅方向に延在して両側の側板部３８を接続する反力板部４６で構成されている。
反力板部４６は、図２に示すように、両側の側板部３８が道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに接触していない状態、すなわち、ゴムシート構造体３６に外力が掛かっていない状態で第１の形状となる。本実施の形態では、第１の形状は、両側の側板部３８の間で平面上を延在する形状であり、言い換えると平板状の形状である。
そして、両側の側板部３８が互いに対向する端部１４の端面１４Ａに接触した状態で、反力板部４６は、図１に示すように、第１の形状から下方に凸状に湾曲変形され、第１の形状に戻ろうとする反力板部４６の弾性力により両側の側板部３８を、道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに弾接させる。
反力板部４６の幅方向の両端が両側の側板部３８に接続される箇所は、側板部３８の上端でもよく、あるいは、側板部３８の下端でもよいが、本実施の形態では、反力板部４６の幅方向の両端は、両側の側板部３８の上下方向（高さ方向）の中間部に接続され、第１の形状に戻ろうとする反力板部４６の弾性力を両側の側板部３８に効率良く伝達できるように図られている。 The elastic contact portions 44 are locations where the side plate portions 38 on both sides are elastically contacted with the end faces 14A of the end portions 14 facing each other, which constitute the road bridge 12 .
In this embodiment, the elastic contact portions 44 are formed integrally with the rubber sheet structure 36 and extend in the width direction of the rubber sheet structure 36 above the lower plate portion 40 to connect the side plate portions 38 on both sides. It is composed of a reaction force plate portion 46 that
As shown in FIG. 2, the reaction plate portion 46 is in a state in which the side plate portions 38 on both sides are not in contact with the end faces 14A of the opposing end portions 14 of the elements constituting the road bridge 12, that is, the rubber sheet structure. The first shape is obtained when no external force is applied to 36 . In the present embodiment, the first shape is a shape extending on a plane between the side plate portions 38 on both sides, in other words, a flat plate shape.
Then, in a state in which the side plate portions 38 on both sides are in contact with the end surfaces 14A of the end portions 14 facing each other, the reaction force plate portion 46 is curvedly deformed from the first shape into a downward convex shape as shown in FIG. , the side plate portions 38 on both sides are brought into elastic contact with the end faces 14A of the opposite end portions 14 of the elements constituting the road bridge 12 by the elastic force of the reaction plate portions 46 trying to return to the first shape.
The location where both ends of the reaction force plate portion 46 in the width direction are connected to the side plate portions 38 on both sides may be the upper end of the side plate portion 38 or the lower end of the side plate portion 38, but in the present embodiment, the reaction force Both ends of the plate portion 46 in the width direction are connected to intermediate portions in the vertical direction (height direction) of the side plate portions 38 on both sides, and the elastic force of the reaction plate portion 46 trying to return to the first shape is applied to the side plates on both sides. It is designed so that it can be efficiently transmitted to the portion 38 .

なお、両側の側板部３８を互いに平行させた状態で両側の側板部３８を互いに近づけると、反力板部４６は上方に湾曲変形するか、下方に湾曲変形するか不明であるが、ゴムシート構造体３６を互いに対向する端部１４の間に挿入する際に、両側の側板部３８の上端を互いに近づけるように変形すると、反力板部４６は下方に湾曲変形される。
この場合、反力板部４６を上方に湾曲変形させてもよいが、反力板部４６を下方に湾曲変形させた場合の方が道路橋伸縮装置用止水装置３４の外観性を高める上で有利となる。
なお、第１の形状として、予め僅かに下方に凸状となった湾曲形状とすると、両側の側板部３８を互いに近づけた際に、反力板部４６を確実に下方に湾曲変形させることができる。第１の形状をこのような形状としてもよいが、上記のように第１の形状を平板状の形状とすると、両側の側板部３８を互いに対向する端部１４の端面１４Ａに弾接させる大きな弾接力を得る上で有利となる。 When the side plate portions 38 on both sides are brought closer to each other while the side plate portions 38 are parallel to each other, it is unclear whether the reaction force plate portion 46 is bent upward or bent downward. When the structure 36 is inserted between the ends 14 facing each other, if the upper ends of the side plate portions 38 on both sides are deformed so as to approach each other, the reaction force plate portion 46 is bent downward.
In this case, the reaction plate portion 46 may be bent upward, but bending and deforming the reaction plate portion 46 downward enhances the appearance of the water stop device 34 for the road bridge expansion and contraction device. is advantageous.
If the first shape is a curved shape that is slightly convex downward in advance, the reaction force plate portion 46 can be reliably bent downward when the side plate portions 38 on both sides are brought closer to each other. can. Although the first shape may be such a shape, if the first shape is a flat plate shape as described above, the side plate portions 38 on both sides are elastically contacted with the end faces 14A of the end portions 14 facing each other. It is advantageous in obtaining elastic contact force.

図３に示すように、反力板部４６は、本実施の形態では、一対の継手部材１８の下方で一対の継手部材１８の橋軸方向と直交する方向のほぼ全長にわたって設けられ、反力板部４６の幅方向の両端を除いて反力板部４６は均一の厚さで形成されている。
平面視した場合、橋軸方向と直交する方向において下板部４０の両端は一対の継手部材１８の両端および反力板部４６の両端よりも外側に突出しており、下板部４０の橋軸方向と直交する方向の両端には、図４に示すように、両側の側板部３８を接続する起立壁４００２が起立され、また、下板部４０の両端寄りの箇所に、下板部４０上に溜まった雨水排出用の排水管部４００４が突設され、排水管部４００４には不図示の排水管が接続される。 As shown in FIG. 3, in this embodiment, the reaction plate portion 46 is provided below the pair of joint members 18 over substantially the entire length of the pair of joint members 18 in a direction orthogonal to the bridge axis direction. The reaction force plate portion 46 is formed with a uniform thickness except for both ends in the width direction of the plate portion 46 .
When viewed in plan, both ends of the lower plate portion 40 protrude outward from both ends of the pair of joint members 18 and both ends of the reaction plate portion 46 in a direction perpendicular to the direction of the bridge axis. As shown in FIG. 4, standing walls 4002 connecting the side plate portions 38 on both sides are erected at both ends in the direction orthogonal to the direction perpendicular to the direction. A drain pipe portion 4004 for draining rainwater accumulated in the wall is protruded, and a drain pipe (not shown) is connected to the drain pipe portion 4004 .

係止部材４２は、両側の側板部３８からゴムシート構造体３６の幅方向の外側に突設され、両側の側板部３８が互いに対向する端部１４の端面１４Ａに弾接した状態で、凹部２２の底面２２Ａに係止可能となる。
両側の側板部３８から突設された複数の係止部材４２が、道路橋１２を構成する要素の互いに対向する端部１４の凹部２２の底面２２Ａに係止された状態で、ゴムシート構造体３６は、互いに対向する端部１４の間で吊り下げられる。
本実施の形態では、係止部材４２は鋼製のピン４２０２で構成され、側板部３８の上端寄りの箇所から突設され、言い換えると、側板部３８の上部から突設され、側板部３８の長さ方向の全長にわたり側板部３８の長さ方向に間隔をおいて複数設けられている。 The locking members 42 project outward in the width direction of the rubber sheet structure 36 from the side plate portions 38 on both sides. 22 can be locked to the bottom surface 22A.
A plurality of locking members 42 projecting from the side plate portions 38 on both sides are locked to the bottom surfaces 22A of the concave portions 22 of the ends 14 facing each other of the elements constituting the road bridge 12, and the rubber sheet structure is formed. 36 are suspended between opposite ends 14 .
In the present embodiment, the locking member 42 is composed of a steel pin 4202 and protrudes from a portion near the upper end of the side plate portion 38 . A plurality of them are provided at intervals in the length direction of the side plate portion 38 over the entire length in the length direction.

側板部３８には、鋼製で厚さ方向の両面が平坦面とされた支持板４２０４が埋め込まれており、複数のピンはこの支持板４２０４の上部から突設され、言い換えると、複数のピン４２０２は支持板４２０４で支持されており、側板部３８に対するピン４２０２の取り付け強度が確保されている。
本実施の形態では、複数のピン４２０２が凹部２２の底面２２Ａに係止し、両側の側板部３８が道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに弾接された状態で、支持板４２０４が端部１４の端面１４Ａに平行するように、支持板４２０４が側板部３８に埋め込まれている。
より詳細には、両側の側板部３８が道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに弾接された状態で、端部１４の端面１４Ａに対向する支持板４２０４の面が、支持板４２０４が端部１４の端面１４Ａに平行するように、支持板４２０４が側板部３８に埋め込まれている。
これにより、両側の側板部３８が道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに弾接された際に、両側の側板部３８の平坦性を確保し、端部１４の端面１４Ａに対する両側の側板部３８の密着性を高め、雨水の道路橋１２の下方への流下を防止する上で有利となる。
また、支持板４２０４の下部は、反力板部４６が接続する側板部３８の箇所に位置しているので、反力板部４６の弾性力を支持板４２０４でも受け、両側の側板部３８の平坦性を確保し、端部１４の端面１４Ａに対する両側の側板部３８の密着性を高め、雨水の道路橋１２の下方への流下を防止する上でより有利となる。 A support plate 4204 made of steel and having flat surfaces on both sides in the thickness direction is embedded in the side plate portion 38, and a plurality of pins protrude from the top of the support plate 4204. In other words, a plurality of pins The pin 4202 is supported by a support plate 4204, and the attachment strength of the pin 4202 to the side plate portion 38 is ensured.
In this embodiment, a plurality of pins 4202 are engaged with the bottom surface 22A of the recess 22, and the side plate portions 38 on both sides are in elastic contact with the end surfaces 14A of the ends 14 of the elements constituting the road bridge 12 facing each other. The support plate 4204 is embedded in the side plate portion 38 so that the support plate 4204 is parallel to the end surface 14A of the end portion 14 .
More specifically, with the side plate portions 38 on both sides elastically contacting the end surfaces 14A of the end portions 14 facing each other of the elements constituting the road bridge 12, the surface of the support plate 4204 facing the end surfaces 14A of the end portions 14 However, the support plate 4204 is embedded in the side plate portion 38 so that the support plate 4204 is parallel to the end surface 14A of the end portion 14 .
As a result, when the side plate portions 38 on both sides are elastically contacted with the end faces 14A of the end portions 14 facing each other of the elements constituting the road bridge 12, the flatness of the side plate portions 38 on both sides is secured, and the end portions 14 are This is advantageous in enhancing the adhesion of the side plate portions 38 on both sides to the end surface 14A and preventing rainwater from flowing down the road bridge 12 .
In addition, since the lower part of the support plate 4204 is located at the part of the side plate portion 38 to which the reaction plate portion 46 is connected, the elastic force of the reaction plate portion 46 is also received by the support plate 4204, and the side plate portions 38 on both sides are supported. This is more advantageous in securing flatness, enhancing the adhesion of the side plate portions 38 on both sides to the end surface 14A of the end portion 14, and preventing rainwater from flowing downwards on the road bridge 12.

本実施の形態では道路橋伸縮装置用止水装置３４を設置する場合、まず、ゴムシート構造体３６を、道路橋１２を構成する要素の互いに対向する端部１４の間に挿入する際に、両側の側板部３８の上端を互いに近づけるように外力を掛け、反力板部４６を第１の形状から下方に凸状に湾曲するように変形させ、次に、この変形状態でゴムシート構造体３６を互いに対向する床版１６の端部１４間に挿入し、両側の側板部３８の複数のピン４２０２を両側の端部１４の凹部２２の底面２２Ａに係止させ、外力を解放する。
このゴムシート構造体３６の挿入作業により、両側の側板部３８の複数のピン４２０２は両側の端部１４の凹部２２の底面２２Ａに係止し、両側の側板部３８が湾曲変形された反力板部４６の弾性力により互いに対向する端部１４の端面１４Ａに弾接され、両側の側板部３８が端部１４の端面１４Ａに弾接されることで、複数のピン４２０２が凹部２２の底面２２Ａに係止した状態が保持される。
言い換えると、両側の側板部３８の端部１４の端面１４Ａへの弾接に基づく摩擦力と、複数のピン４２０２による係止力により、両側の側板部３８が道路橋１２を構成する要素の互いに対向する端部１４に取り付けられ、固定される。
したがって、ゴムシート構造体３６は、道路橋１２を構成する要素の互いに対向する端部１４の間で吊り下げられた状態が保持され、互いに対向する端部１４に組み付けられる。 In this embodiment, when installing the water stop device 34 for road bridge expansion and contraction device, first, when inserting the rubber sheet structure 36 between the mutually facing ends 14 of the elements constituting the road bridge 12, An external force is applied so that the upper ends of the side plate portions 38 on both sides are brought closer to each other, and the reaction plate portion 46 is deformed from the first shape so as to be curved downward. 36 are inserted between the ends 14 of the floor slabs 16 facing each other, and the plurality of pins 4202 of the side plate portions 38 on both sides are engaged with the bottom surfaces 22A of the recesses 22 on the ends 14 on both sides to release the external force.
By inserting the rubber sheet structure 36, the plurality of pins 4202 of the side plate portions 38 on both sides are engaged with the bottom surfaces 22A of the recesses 22 of the end portions 14 on both sides, and the side plate portions 38 on both sides are bent and deformed. The elastic force of the plate portion 46 makes elastic contact with the end surfaces 14A of the end portions 14 facing each other, and the side plate portions 38 on both sides are elastically contacted with the end surfaces 14A of the end portions 14, so that the plurality of pins 4202 are brought into contact with the bottom surface of the recess 22. The state locked to 22A is maintained.
In other words, the frictional force due to the elastic contact of the end portions 14 of the side plate portions 38 on both sides with the end face 14A and the locking force of the plurality of pins 4202 allow the side plate portions 38 on both sides to engage the elements constituting the road bridge 12 with each other. It is attached and secured to the opposite end 14 .
Therefore, the rubber sheet structure 36 is kept suspended between the opposing ends 14 of the elements forming the road bridge 12 and assembled to the opposing ends 14 .

詳細には、上下方向および橋軸方向におけるゴムシート構造体３６の位置が位置決めされた状態で、ゴムシート構造体３６は、対向する端部１４の間に吊り下げられた状態が保持され、互いに対向する端部１４の間に組み付けられる。
その後、一対の継手部材１８が鉄筋２４、アンカー部材３０を介して凹部２２に組み付けられ、凹部２２に後打ちコンクリート３２が充填され、道路橋伸縮装置１０および道路橋伸縮装置用止水装置３４の設置作業が終了する。
なお、本実施の形態では、一対の継手部材１８の側板部２６の下端が凹部２２の底面２２Ａ上に載置する構造であるため、側板部２６の下端には下方に開放状の溝４８が側板部２６の長さ方向に間隔をおいて複数設けられ、複数のピン４２０２はそれらの溝４８に収容され、ピン４２０２と側板部２６の下端との干渉が防止されている。 More specifically, the rubber sheet structure 36 is suspended between the opposing ends 14 while the rubber sheet structure 36 is positioned in the vertical direction and the bridge axis direction. It is assembled between opposing ends 14 .
After that, the pair of joint members 18 are assembled into the recess 22 via the reinforcing bars 24 and the anchor members 30, the recess 22 is filled with the post-cast concrete 32, and the road bridge expansion device 10 and the water stop device 34 for the road bridge expansion device are filled. Installation work is completed.
In the present embodiment, since the lower ends of the side plate portions 26 of the pair of joint members 18 are placed on the bottom surface 22A of the recess 22, the lower ends of the side plate portions 26 have grooves 48 that open downward. A plurality of pins 4202 are provided at intervals in the lengthwise direction of the side plate portion 26, and the plurality of pins 4202 are housed in the grooves 48, thereby preventing interference between the pins 4202 and the lower end of the side plate portion 26.

したがって、本実施の形態によれば、従来のように、取り付け金物の組み立て作業や、取り付け金物の鉄筋への溶接作業、ゴムシート構造体３６の両側の側板部３８を複数箇所においてボルトを用いて取り付け金物に取り付ける取り付け作業を省略でき、道路橋伸縮装置用止水装置３４の設置を簡単に確実に行なう上で有利となる。
したがって、道路橋伸縮装置用止水装置３４の設置の工期の短縮化を図り、道路橋伸縮装置用止水装置３４を含む道路橋伸縮装置１０のコストダウンを図る上で有利となる。
なお、弾接部４４として、ゴムシート構造体３６とは別体のコイルスプリングなどの別部材を設け、両側の側板部３８を互いに対向する端部１４の端面１４Ａに弾接するようにしてもよい。
あるいは、ゴムシート構造体３６とは別体の反力板部４６を設け、橋軸方向である反力板部４６の幅方向の両端を両側の側板部３８にボルトなどの取り付け部材により、あるいは、接着剤により取り付けるようにしてもよく、あるいは、両側の側板部３８の凹溝にはめ込むことで取り付けるようにしてもよい。
ただし、実施の形態のように、ゴムシート構造体３６に一体に設けられた反力板部４６を設けると、部品点数を削減でき、道路橋伸縮装置用止水装置３４の設置作業をより効率良く行なう上で有利となる。 Therefore, according to the present embodiment, the work of assembling the mounting metal fittings, the work of welding the mounting metal fittings to the rebar, and the side plate portions 38 on both sides of the rubber sheet structure 36 at a plurality of locations using bolts are performed as in the conventional art. It is possible to omit the installation work of attaching to the installation hardware, which is advantageous in that the water stop device 34 for road bridge expansion and contraction device can be easily and reliably installed.
Therefore, it is advantageous in shortening the construction period for installing the road bridge expansion/contraction device water stop device 34 and reducing the cost of the road bridge expansion/contraction device 10 including the road bridge expansion/contraction device water stop device 34 .
As the elastic contact portion 44, a separate member such as a coil spring may be provided separately from the rubber sheet structure 36, and the side plate portions 38 on both sides may be elastically contacted with the end faces 14A of the end portions 14 facing each other. .
Alternatively, a reaction plate portion 46 is provided separately from the rubber sheet structure 36, and both ends in the width direction of the reaction plate portion 46, which is in the direction of the bridge axis, are attached to the side plate portions 38 on both sides by mounting members such as bolts, or Alternatively, they may be attached by fitting them into the grooves of the side plate portions 38 on both sides.
However, if the reaction force plate portion 46 integrally provided with the rubber sheet structure 36 is provided as in the embodiment, the number of parts can be reduced, and the installation work of the water stop device 34 for the road bridge expansion and contraction device can be made more efficient. It is an advantage to do well.

（第２の実施の形態）
次に、図５を参照して第２の実施の形態について説明する。
なお、以下の実施の形態では、第１の実施の形態と同様な箇所、部材に同一の符号を付してその説明を省略し、第１の実施の形態と異なった箇所を重点的に説明する。
第２の実施の形態では、反力板部４６が、ゴムシート構造体３６の長さ方向に間隔をおいて複数設けられ、すなわち、反力板部４６が、ゴムシート構造体３６の長さ方向に切り離されて複数設けられている点が第１の実施の形態と異なっている。
なお、反力板部４６を、ゴムシート構造体３６の長さ方向の全長にわたって設けるか、あるいは、ゴムシート構造体３６の長さ方向に間隔をおいて複数設けるかは、要求される弾接力に応じて適宜決定される。
このような第２の実施の形態によっても、第１の実施の形態と同様に、両側の側板部３８が端部１４の端面１４Ａに弾接されることで、複数のピン４２０２が凹部２２の底面２２Ａに係止した状態が保持され、道路橋１２を構成する要素の互いに対向する端部１４の間にゴムシート構造体３６を簡単に組み付けることが可能となり、第１の実施の形態と同様な効果が奏される。 (Second embodiment)
Next, a second embodiment will be described with reference to FIG.
In the following embodiments, the same reference numerals are assigned to the same parts and members as those of the first embodiment, and the explanation thereof is omitted, and the explanation focuses on the parts different from the first embodiment. do.
In the second embodiment, a plurality of reaction plate portions 46 are provided at intervals in the lengthwise direction of the rubber sheet structure 36 . It differs from the first embodiment in that it is separated in multiple directions.
Whether the reaction force plate portion 46 is provided over the entire length of the rubber sheet structure 36 or provided in plurality at intervals in the length direction of the rubber sheet structure 36 depends on the required elastic contact force. determined as appropriate.
According to the second embodiment, as in the first embodiment, the side plate portions 38 on both sides are brought into elastic contact with the end surface 14A of the end portion 14, thereby causing the plurality of pins 4202 to move in the concave portion 22. It is possible to easily assemble the rubber sheet structure 36 between the mutually facing ends 14 of the elements constituting the road bridge 12, which is kept locked to the bottom surface 22A, as in the first embodiment. effect is played.

（第３の実施の形態）
次に、図６を参照して第３の実施の形態について説明する。
第３の実施の形態では係止部材４２の構造が第１の実施の形態と異なっている。
第３の実施の形態では、図６（Ａ）、（Ｂ）に示すように、支持板４２０４と複数のピン４２０２に代えてフランジが直交する山形鋼が用いられている。本実施の形態では山形鋼４２１０は、２つのフランジ４２１０Ａ、４２１０Ｂの突出高さが等しい等辺山形鋼４２１０である。
等辺山形鋼４２１０の２つのフランジ４２１０Ａ、４２１０Ｂのうち一方のフランジ４２１０Ａは、両側の側板部３８の上端からゴムシート構造体３６の幅方向の外側に突設され、両側の側板部３８が互いに対向する端部１４の端面１４Ａに弾接した状態で、凹部２２の底面２２Ａに係止可能となり、したがって、一方のフランジ４２１０Ａは係止部材４２を構成している。
等辺山形鋼４２１０の２つのフランジ４２１０Ａ、４２１０Ｂのうち他方のフランジ４２１０Ｂは側板部３８に埋め込まれ、側板部３８に対する一方のフランジ４２１０Ａ（係止部材４２）の取り付け強度が確保され、したがって、他方のフランジ４２１０Ｂは、係止部材４２を支持する支持板部を構成している。
本実施の形態では、等辺山形鋼４２１０は側板部３８の長さ方向の全長にわたり設けられ、一方のフランジ４２１０Ａは、側板部３８の長さ方向全長にわたり突設されている。
なお、両側の側板部３８が端部１４の端面１４Ａに弾接されることで、一方のフランジ４２１０Ａが凹部２２の底面２２Ａに係止した状態が安定して保持されるのであれば、等辺山形鋼４２１０を側板部３８の長さ方向に間隔をおいて複数設けるなど任意である。 (Third Embodiment)
Next, a third embodiment will be described with reference to FIG.
In the third embodiment, the structure of the locking member 42 is different from that in the first embodiment.
In the third embodiment, as shown in FIGS. 6A and 6B, instead of the support plate 4204 and the plurality of pins 4202, angle irons having orthogonal flanges are used. In the present embodiment, the angle steel 4210 is an equilateral angle steel 4210 in which the two flanges 4210A and 4210B have the same protrusion height.
One flange 4210A of the two flanges 4210A and 4210B of the equilateral angle steel 4210 protrudes outward in the width direction of the rubber sheet structure 36 from the upper ends of the side plate portions 38 on both sides, and the side plate portions 38 on both sides face each other. It can be locked to the bottom surface 22A of the concave portion 22 in a state of elastic contact with the end surface 14A of the end portion 14, and therefore one flange 4210A constitutes the locking member .
Of the two flanges 4210A and 4210B of the equilateral angle steel 4210, the other flange 4210B is embedded in the side plate portion 38 to ensure the mounting strength of the one flange 4210A (locking member 42) to the side plate portion 38. The flange 4210B constitutes a support plate portion that supports the locking member 42. As shown in FIG.
In the present embodiment, the equilateral angle steel 4210 is provided over the entire length of the side plate portion 38, and one flange 4210A is provided over the entire length of the side plate portion 38 to protrude.
If the side plate portions 38 on both sides are in elastic contact with the end surface 14A of the end portion 14 and the state in which the flange 4210A on one side is engaged with the bottom surface 22A of the recessed portion 22 is stably maintained, the equilateral mountain shape is formed. It is optional to provide a plurality of steels 4210 at intervals in the longitudinal direction of the side plate portion 38 .

第３の実施の形態では、両側の側板部３８の一方のフランジ４２１０Ａを両側の端部１４の凹部２２の底面２２Ａに係止させ、両側の側板部３８が湾曲変形された反力板部４６の弾性力により互いに対向する端部１４の端面１４Ａに弾接され、ゴムシート構造体３６が、道路橋１２を構成する要素の互いに対向する端部１４の間に所定の状態で吊り下げられた状態が保持され、互いに対向する端部１４に組み付けられる。
この状態で、両側の側板部３８の一方のフランジ４２１０Ａは、両側の端部１４の凹部２２の底面２２Ａ上で側板部３８の長さ方向に沿って延在しているので、図７に示すように、一対の継手部材１８が鉄筋２４、アンカー部材３０を介して凹部２２に組み付けられた状態で、一対の継手部材１８の側板部２６の下端は一方のフランジ４２１０Ａ上に載置される。そして、凹部２２に後打ちコンクリート３２が充填され、道路橋伸縮装置１０および道路橋伸縮装置用止水装置３４の設置作業が終了する。
第３の実施の形態によれば、第１の実施の形態と同様な効果が奏される他、支持板４２０４と複数のピン４２０２に代えて、市販品である山形鋼４２１０を用いているので、道路橋伸縮装置用止水装置３４のコストダウンを図る上で有利となる。
また、第１の実施の形態と同様に、一方のフランジ４２１０Ａが凹部２２の底面２２Ａに係止し、両側の側板部３８が道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに弾接された状態で、他方のフランジ４２１０Ａは、端部１４の端面１４Ａに平行するように側板部３８に埋め込まれているので、両側の側板部３８が道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに弾接され際に、両側の側板部３８の平坦性を確保し、端部１４の端面１４Ａに対する両側の側板部３８の密着性を高め、雨水の道路橋１２の下方への流下を防止する上で有利となる。
また、他方のフランジ４２１０Ｂの下部は、反力板部４６が接続する側板部３８の箇所に位置しているので、反力板部４６の弾性力を他方のフランジ４２１０Ｂでも受け、両側の側板部３８の平坦性を確保し、端部１４の端面１４Ａに対する両側の側板部３８の密着性を高め、雨水の道路橋１２の下方への流下を防止する上で有利となる。 In the third embodiment, one of the flanges 4210A of the side plate portions 38 on both sides is engaged with the bottom surface 22A of the concave portion 22 of the end portion 14 on both sides, and the side plate portions 38 on both sides are curvedly deformed to form the reaction plate portion 46. The rubber sheet structure 36 is elastically contacted with the end surfaces 14A of the ends 14 facing each other by the elastic force of the rubber sheet structure 36, and is suspended in a predetermined state between the ends 14 facing each other of the elements constituting the road bridge 12. It is held in place and assembled with the ends 14 facing each other.
In this state, one flange 4210A of the side plate portion 38 on both sides extends along the length direction of the side plate portion 38 on the bottom surface 22A of the concave portion 22 of the end portion 14 on both sides, as shown in FIG. , the lower ends of the side plate portions 26 of the pair of joint members 18 are placed on one flange 4210A while the pair of joint members 18 are assembled in the recess 22 via the reinforcing bars 24 and the anchor members 30. As shown in FIG. Then, the recess 22 is filled with the post-cast concrete 32, and the installation work of the road bridge expansion/contraction device 10 and the road bridge expansion/contraction device water stop device 34 is completed.
According to the third embodiment, in addition to the same effects as those of the first embodiment, instead of the support plate 4204 and the plurality of pins 4202, the commercially available angle steel 4210 is used. , it is advantageous in reducing the cost of the water stop device 34 for the road bridge expansion and contraction device.
In addition, as in the first embodiment, one flange 4210A is engaged with the bottom surface 22A of the recess 22, and the side plate portions 38 on both sides are the end surfaces 14A of the opposite ends 14 of the elements constituting the road bridge 12. , the other flange 4210A is embedded in the side plate portion 38 so as to be parallel to the end surface 14A of the end portion 14, so that the side plate portions 38 on both sides of the elements constituting the road bridge 12 When elastically contacting the end surface 14A of the opposite end 14, the flatness of the side plate portions 38 on both sides is secured, the adhesion of the side plate portions 38 on both sides to the end surface 14A of the end portion 14 is improved, and the rainwater road bridge 12 It is advantageous in preventing the downward flow of
In addition, since the lower portion of the other flange 4210B is located at the portion of the side plate portion 38 to which the reaction plate portion 46 is connected, the elastic force of the reaction plate portion 46 is also received by the other flange 4210B, and the side plate portions on both sides It is advantageous in securing the flatness of 38, increasing the adhesion of the side plate portions 38 on both sides to the end surface 14A of the end portion 14, and preventing rainwater from flowing downward on the road bridge 12.

（第４の実施の形態）
次に、図８を参照して第４の実施の形態について説明する。
第４の実施の形態では、第１の実施の形態の反力板部４６に、反力板部４６の橋軸方向である幅方向のほぼ全域にわたって延在するばね鋼板５０を埋め込んだものである。
ばね鋼板５０は、図８（Ａ）に示すように、ゴムシート構造体３６に外力が掛かっていない状態で反力板部４６の内部で反力板部４６に沿って延在する第２の形状となり、言い換えると、第１の形状に沿って延在する第２の形状となり、図８（Ｂ）に示すように、両側の側板部３８の複数のピン４２０２が凹部２２の底面２２Ａに係止し、両側の側板部３８が互いに対向する端部１４の端面１４Ａに弾接した状態で、第２の形状から湾曲変形され第２の形状に戻ろうとする弾性力により反力板部４６と協働して両側の側板部３８を互いに対向する端部１４の端面１４Ａに弾接させるものである。
ばね鋼板５０は、反力板部４６の長さ方向の全長にわたって埋め込まれている。
したがって、第４の実施の形態では、弾接部４４は、ばね鋼板５０を含む反力板部４６で構成されている。
第４の実施の形態によれば、第１の実施の形態と同様な効果が奏される他、両側の側板部３８をより大きな弾接力で端部１４の端面１４Ａに弾接する上で有利となり、ゴムシート構造体３６を、道路橋１２を構成する要素の互いに対向する端部１４の間でより安定した状態で吊り下げる上で有利となる。
なお、両側の側板部３８が端部１４の端面１４Ａに弾接されることで、係止部材４２が凹部２２の底面２２Ａに係止した状態が安定して保持されるのであれば、ばね鋼板５０を反力板部４６の長さ方向に間隔をおいて複数埋め込むなど任意である。
この第４の実施の形態は、第１～第３の実施の形態に適用可能である。 (Fourth embodiment)
Next, a fourth embodiment will be described with reference to FIG.
In the fourth embodiment, a spring steel plate 50 is embedded in the reaction plate portion 46 of the first embodiment and extends over substantially the entire widthwise direction of the reaction plate portion 46 in the bridge axis direction. be.
As shown in FIG. 8A, the spring steel plate 50 extends along the reaction plate portion 46 inside the reaction plate portion 46 while no external force is applied to the rubber sheet structure 36. In other words, it becomes a second shape extending along the first shape, and as shown in FIG. In a state in which the side plate portions 38 on both sides are in elastic contact with the end faces 14A of the end portions 14 facing each other, the reaction plate portion 46 and the reaction plate portion 46 are bent and deformed from the second shape by an elastic force to return to the second shape. In cooperation, the side plate portions 38 on both sides are brought into elastic contact with the end faces 14A of the end portions 14 facing each other.
The spring steel plate 50 is embedded over the entire length of the reaction plate portion 46 .
Therefore, in the fourth embodiment, the elastic contact portion 44 is composed of the reaction plate portion 46 including the spring steel plate 50 .
According to the fourth embodiment, in addition to the same effect as the first embodiment, it is advantageous in that the side plate portions 38 on both sides are brought into elastic contact with the end surface 14A of the end portion 14 with a larger elastic contact force. , to more stably suspend the rubber sheet structure 36 between the opposing ends 14 of the elements making up the road bridge 12 .
If the side plate portions 38 on both sides are elastically contacted with the end surface 14A of the end portion 14 so that the state in which the locking member 42 is locked to the bottom surface 22A of the recessed portion 22 is stably maintained, a spring steel plate is used. It is optional to embed a plurality of 50 at intervals in the length direction of the reaction force plate portion 46 .
This fourth embodiment is applicable to the first to third embodiments.

（第５の実施の形態）
次に、図９を参照して第５の実施の形態について説明する。
第５の実施の形態は、図９（Ａ）、（Ｂ）に示すように、道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに弾接される両側の側板部３８の外面の上部に、上方に至るにつれて端面１４Ａから次第に離れる傾斜面３８０２が、側板部３８の長さ方向の全長にわたって形成されている点が第１の実施の形態と異なっている。
第５の実施の形態では、ゴムシート構造体３６を、道路橋１２を構成する要素の互いに対向する端部１４に設置したのち、図９（Ｃ）に示すように、傾斜面３８０２と端部１４の端面１４Ａとの間の隙間にシール材５２を充填し、気密に閉塞する。
第５の実施の形態によれば、道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに凹凸があった場合であっても、雨水の下方への落下を阻止する上でより有利となる。
この第５の実施の形態は、第１～第４の実施の形態に適用可能である。 (Fifth embodiment)
Next, a fifth embodiment will be described with reference to FIG.
In the fifth embodiment, as shown in FIGS. 9A and 9B, the side plate portions 38 on both sides elastically contact the end faces 14A of the ends 14 of the elements constituting the road bridge 12 facing each other. The difference from the first embodiment is that an inclined surface 3802 that gradually separates from the end surface 14A as it goes upward is formed over the entire length of the side plate portion 38 on the upper portion of the outer surface.
In the fifth embodiment, after the rubber sheet structures 36 are installed at the ends 14 of the elements constituting the road bridge 12 facing each other, as shown in FIG. 14 and the end face 14A is filled with a sealing material 52 to be airtightly closed.
According to the fifth embodiment, even if the end faces 14A of the ends 14 facing each other of the elements constituting the road bridge 12 have irregularities, it is possible to prevent rainwater from falling downward. be advantageous.
This fifth embodiment is applicable to the first to fourth embodiments.

（第６の実施の形態）
次に、図１０、図１１を参照して第６の実施の形態について説明する。
第６の実施の形態では、道路橋伸縮装置用止水装置３４の外観性を高めるため、ゴムシート構造体３６を、道路橋１２を構成する要素の互いに対向する端部１４の間に挿入した際に、言い換えると、両側の側板部３８が互いに近づく方向に変位する際に、反力板部４６に、他の箇所に比べて率先して変形し反力板部４６が湾曲変形する方向を所望の方向に定める、本実施の形態では反力板部４６が湾曲変形する方向を下方に定める変形促進部５４が設けられている。
変形促進部５４は、反力板部４６に欠部を設けることで、あるいは、反力板部４６の肉厚を変えることで、あるいは反力板部４６の上面部と下面部との材料を変えることなどで構成することができる。
図１０（Ａ）～（Ｄ）、図１１（Ａ）～（Ｃ）は外力が掛かっていない状態のゴムシート構造体３６の断面図であり、反力板部４６は、橋軸方向の両端、すなわち反力板部４６の幅方向の両端を除き均一の厚さで形成されている。 (Sixth embodiment)
Next, a sixth embodiment will be described with reference to FIGS. 10 and 11. FIG.
In the sixth embodiment, a rubber sheet structure 36 is inserted between the opposing ends 14 of the elements constituting the road bridge 12 in order to improve the appearance of the water stop device 34 for the road bridge expansion device. In other words, when the side plate portions 38 on both sides are displaced toward each other, the reaction plate portion 46 is deformed more than other portions, and the direction in which the reaction plate portion 46 bends and deforms is determined. A deformation promoting portion 54 is provided for determining a direction in which the reaction force plate portion 46 bends and deforms downward in the present embodiment.
The deformation promoting portion 54 is formed by providing a notch in the reaction force plate portion 46, by changing the thickness of the reaction force plate portion 46, or by changing the material of the upper surface portion and the lower surface portion of the reaction force plate portion 46. It can be configured by changing
10(A) to (D) and FIGS. 11(A) to (C) are cross-sectional views of the rubber sheet structure 36 in a state where no external force is applied. That is, the reaction force plate portion 46 is formed with a uniform thickness except for both ends in the width direction.

図１０（Ａ）に示す例では、反力板部４６の上面の幅方向の中央部に円弧状の欠部４６０２を設けることで変形促進部５４を構成している。
図１０（Ｂ）に示す例では、反力板部４６の上面の幅方向の中央部に角ばった欠部４６０４を設けることで変形促進部５４を構成している。
図１０（Ｃ）に示す例では、反力板部４６の上面の幅方向の中央部にＶ字状の欠部４６０６を設けることで変形促進部５４を構成している。
図１０（Ｄ）に示す例では、反力板部４６の上面を平坦面で形成し、反力板部４６の下面の幅方向の中央部に膨出部４６０８を設け、反力板部４６の幅方向の中央の肉厚を残りの箇所に比べて大きく形成したものである。
図１１（Ａ）に示す例では、反力板部４６の上面の幅方向に間隔をおいて円弧状の欠部４６０２を複数設けることで変形促進部５４を構成している。
図１０（Ｂ）に示す例では、反力板部４６の下面の幅方向に間隔をおいて円弧状の欠部４６０２を複数設けることで変形促進部５４を構成している。
図１０（Ｃ）に示す例では、反力板部４６の上面の幅方向に間隔をおいて円弧状の欠部４６０２を複数設けると共に、下面の幅方向に間隔をおいて上面の隣り合う欠部４６０２の中間の箇所に円弧状の欠部４６０２を複数設けることで変形促進部５４を構成している。
なお、欠部４６０２、４６０４，４６０６、膨出部４６０８は、橋軸方向と直交する方向である反力板部４６の長手方向に連続状に設けられていてもよく、あるいは、反力板部４６の長手方向に間隔をおいて設けられていてもよい。
第６の実施の形態によれば、変形促進部５４により反力板部４６が湾曲変形する方向を定めることができるので、ゴムシート構造体３６の設置を簡単に行なう上で有利となり、道路橋伸縮装置用止水装置３４の外観性を簡単に確実に高める上で有利となる。
この第６の実施の形態は、第１～第５の実施の形態に適用可能であり、第４の実施の形態では、ばね鋼板５０の上面を覆う反力板部４６の箇所に変形促進部５４が設けられることになる。 In the example shown in FIG. 10A, the deformation promoting portion 54 is configured by providing an arc-shaped notch portion 4602 at the center portion of the upper surface of the reaction force plate portion 46 in the width direction.
In the example shown in FIG. 10B, the deformation promoting portion 54 is configured by providing an angular notch portion 4604 in the center portion of the upper surface of the reaction force plate portion 46 in the width direction.
In the example shown in FIG. 10C, the deformation promoting portion 54 is configured by providing a V-shaped notch portion 4606 in the center portion of the upper surface of the reaction plate portion 46 in the width direction.
In the example shown in FIG. 10D, the upper surface of the reaction plate portion 46 is formed as a flat surface, a bulging portion 4608 is provided at the center of the lower surface of the reaction plate portion 46 in the width direction, and the reaction plate portion 46 The thickness of the central part in the width direction of is formed larger than that of the remaining parts.
In the example shown in FIG. 11A, the deformation promoting portion 54 is configured by providing a plurality of arc-shaped notches 4602 at intervals in the width direction of the upper surface of the reaction plate portion 46 .
In the example shown in FIG. 10B, the deformation promoting portion 54 is configured by providing a plurality of arc-shaped notches 4602 at intervals in the width direction of the lower surface of the reaction plate portion 46 .
In the example shown in FIG. 10C, a plurality of arcuate cutouts 4602 are provided at intervals in the width direction of the upper surface of the reaction plate portion 46, and adjacent cutouts are provided on the upper surface at intervals in the width direction of the lower surface. A deformation promoting portion 54 is configured by providing a plurality of arcuate cutouts 4602 at an intermediate portion of the portion 4602 .
The cutout portions 4602, 4604, 4606 and the bulging portion 4608 may be provided continuously in the longitudinal direction of the reaction plate portion 46, which is the direction orthogonal to the bridge axis direction, or may be provided continuously. 46 may be longitudinally spaced apart.
According to the sixth embodiment, since the direction in which the reaction force plate portion 46 is curved and deformed can be determined by the deformation promoting portion 54, it is advantageous in that the rubber sheet structure 36 can be easily installed, and the road bridge can be easily installed. This is advantageous in simply and reliably improving the appearance of the water stop device 34 for the expansion device.
This sixth embodiment can be applied to the first to fifth embodiments, and in the fourth embodiment, a deformation promoting portion 54 will be provided.

（第７の実施の形態）
次に、図１２、図１３を参照して第７の実施の形態について説明する。
第７の実施の形態は、ゴムシート構造体３６Ａが、両側の側板部３８と、反力板部４６Ａとで構成され、下板部４０を有していない点が第１の実施の形態と異なっている。
第７の実施の形態の道路橋伸縮装置用止水装置３４は、第１の実施の形態と同様に、道路橋１２の橋軸方向に延在する幅と橋軸方向と直交する方向に延在する長さとを有し互いに対向する端部１４の端面１４Ａ間の遊間を閉塞するゴムシート構造体３６Ａを備えている。
ゴムシート構造体３６Ａは、幅方向の両端に設けられ互いに対向する端部１４の端面１４Ａにそれぞれ接触可能な両側の側板部３８と、両側の側板部３８に埋め込まれた係止部材４２と、幅方向に延在して両側の側板部３８を接続する反力板部４６Ａとを有している。 (Seventh embodiment)
Next, a seventh embodiment will be described with reference to FIGS. 12 and 13. FIG.
The seventh embodiment differs from the first embodiment in that the rubber sheet structure 36A is composed of the side plate portions 38 on both sides and the reaction force plate portion 46A, and does not have the lower plate portion 40. different.
The water stop device 34 for road bridge expansion joints of the seventh embodiment has a width extending in the axial direction of the road bridge 12 and a direction perpendicular to the axial direction, as in the first embodiment. and a rubber sheet structure 36A that closes the clearance between the end faces 14A of the end portions 14 facing each other.
The rubber sheet structure 36A includes side plate portions 38 provided at both ends in the width direction and capable of contacting the end surfaces 14A of the end portions 14 facing each other, locking members 42 embedded in the side plate portions 38 on both sides, It has a reaction force plate portion 46A that extends in the width direction and connects the side plate portions 38 on both sides.

係止部材４２は、第１の実施の形態と同様で、鋼製のピン４２０２で構成されている。
すなわち、側板部３８に、鋼製の支持板４２０４が埋め込まれており、複数のピン４２０２はこの支持板４２０４の上部から突設され、側板部３８に対するピン４２０２の取り付け強度が確保され、両側の側板部３８が互いに対向する端部１４の端面１４Ａに弾接した状態で、凹部２２の底面２２Ａに係止可能となる。
本実施の形態でも、複数のピン４２０２が凹部２２の底面２２Ａに係止し、両側の側板部３８が道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに弾接された状態で、支持板４２０４が端部１４の端面１４Ａに平行するように、支持板４２０４が側板部３８に埋め込まれている。 The locking member 42 is configured with a steel pin 4202 as in the first embodiment.
That is, a support plate 4204 made of steel is embedded in the side plate portion 38, and a plurality of pins 4202 protrude from the upper portion of the support plate 4204 to ensure the mounting strength of the pins 4202 to the side plate portion 38. The side plate portions 38 can be locked to the bottom surface 22A of the concave portion 22 in a state in which the side plate portions 38 are in elastic contact with the end surfaces 14A of the end portions 14 facing each other.
In this embodiment as well, a plurality of pins 4202 are engaged with the bottom surface 22A of the recess 22, and the side plate portions 38 on both sides are in elastic contact with the end surfaces 14A of the opposite end portions 14 of the elements constituting the road bridge 12. The support plate 4204 is embedded in the side plate portion 38 so that the support plate 4204 is parallel to the end surface 14A of the end portion 14 .

反力板部４６Ａは、図１２（Ａ）に示すように、ゴムシート構造体３６Ａに外力が掛かっていない状態で第３の形状となる。本実施の形態では、第３の形状は、両側の側板部３８の間で平面上を延在する形状であり、言い換えると平板状の形状である。
そして、両側の側板部３８が互いに対向する端部１４の端面１４Ａに接触した状態で、反力板部４６Ａは、図１２（Ｂ）に示すように、第３の形状から下方に凸状に湾曲変形され、第３の形状に戻ろうとする反力板部４６Ａの弾性力により両側の側板部３８を、道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに弾接させる。
したがって、両側の側板部３８を互いに対向する端部１４に弾接させる弾接部４４が反力板部４６Ａで構成されている。
反力板部４６Ａの幅方向の両端が両側の側板部３８に接続される箇所は、側板部３８の上端でもよく、あるいは、側板部３８の下端でもよいが、本実施の形態では、反力板部４６Ａの幅方向の両端は、両側の側板部３８の上下方向（高さ方向）の中間部に接続され、第３の形状に戻ろうとする反力板部４６Ａの弾性力を両側の側板部３８に効率良く伝達できるように図られている。 As shown in FIG. 12(A), the reaction plate portion 46A assumes the third shape when no external force is applied to the rubber sheet structure 36A. In the present embodiment, the third shape is a shape extending on a plane between the side plate portions 38 on both sides, in other words, a flat plate shape.
Then, in a state in which the side plate portions 38 on both sides are in contact with the end faces 14A of the end portions 14 facing each other, the reaction force plate portion 46A protrudes downward from the third shape as shown in FIG. 12(B). The side plate portions 38 on both sides are brought into elastic contact with the end faces 14A of the opposing end portions 14 of the elements constituting the road bridge 12 by the elastic force of the reaction plate portions 46A that are bent and try to return to the third shape.
Therefore, the elastic contact portions 44 for elastically contacting the side plate portions 38 on both sides with the opposing end portions 14 are formed of the reaction force plate portions 46A.
The locations where both ends of the reaction force plate portion 46A in the width direction are connected to the side plate portions 38 on both sides may be the upper ends of the side plate portions 38 or the lower ends of the side plate portions 38, but in the present embodiment, the reaction force Both ends of the plate portion 46A in the width direction are connected to intermediate portions in the vertical direction (height direction) of the side plate portions 38 on both sides, and the elastic force of the reaction plate portion 46A trying to return to the third shape is applied to the side plates on both sides. It is designed so that it can be efficiently transmitted to the portion 38 .

また、反力板部４６Ａは、一対の継手部材１８の凹凸状の隙間Ｓから下方に落下する雨水を受ける箇所としても機能する。言い換えると、反力板部４６Ａは第１の実施の形態の下板部４０としても機能し、したがって、反力板部４６Ａは、橋軸方向と直交する方向における道路橋伸縮装置１０の長さ方向の全長にわたって延在している。
橋軸方向と直交する方向において、平面視した場合、反力板部４６Ａの長さ方向の両端は一対の継手部材１８の両端よりも外側に突出しており、反力板部４６Ａの両端には、図１３に示すように、両側の側板部３８を接続する起立壁４６１０が起立され、また、反力板部４６Ａの両端寄りの箇所に、反力板部４６Ａ上に溜まった雨水排出用の排水管部４６１２が突設され、排水管部４６１２には不図示の排水管が接続される。 The reaction plate portion 46</b>A also functions as a portion that receives rainwater falling downward from the uneven gap S between the pair of joint members 18 . In other words, the reaction plate portion 46A also functions as the lower plate portion 40 of the first embodiment. It extends along the entire length of the direction.
In a direction perpendicular to the direction of the bridge axis, both longitudinal ends of the reaction plate portion 46A protrude outward from both ends of the pair of joint members 18 when viewed from above. As shown in FIG. 13, standing walls 4610 connecting the side plate portions 38 on both sides are erected. A drainage pipe portion 4612 is projected, and a drainage pipe (not shown) is connected to the drainage pipe portion 4612 .

第７の実施の形態によれば、第１の実施の形態と同様に、道路橋１２を構成する要素の互いに対向する端部１４の間にゴムシート構造体３６Ａを挿入することで、ゴムシート構造体３６Ａは互いに対向する端部１４の間に固定されるので、従来のように、取り付け金物の組み立て作業や、取り付け金物の鉄筋２４への溶接作業、ゴムシート構造体３６Ａの両側の側板部３８を複数箇所においてボルトを用いて取り付け金物に取り付ける取り付け作業を省略でき、道路橋伸縮装置用止水装置３４の設置を簡単に確実に行なう上で有利となる。
したがって、道路橋伸縮装置用止水装置３４の設置の工期の短縮化を図り、道路橋伸縮装置用止水装置３４を含む道路橋伸縮装置１０のコストダウンを図る上で有利となる。
また、第１の実施の形態に比べ下板部４０を備えていないので、ゴムシート構造体３６の構造の簡単化、軽量化を図れ、道路橋伸縮装置用止水装置３４のコストダウンを図る上で有利となる。 According to the seventh embodiment, as in the first embodiment, by inserting the rubber sheet structure 36A between the mutually facing ends 14 of the elements constituting the road bridge 12, the rubber sheet Since the structure 36A is fixed between the ends 14 facing each other, the mounting hardware is assembled, the mounting hardware is welded to the reinforcing bars 24, and the side plates on both sides of the rubber sheet structure 36A are mounted in the conventional manner. It is possible to omit the mounting work of mounting 38 to mounting metal fittings using bolts at a plurality of locations, which is advantageous in that the water stop device 34 for the road bridge expansion and contraction device can be easily and reliably installed.
Therefore, it is advantageous in shortening the construction period for installing the road bridge expansion/contraction device water stop device 34 and reducing the cost of the road bridge expansion/contraction device 10 including the road bridge expansion/contraction device water stop device 34 .
Further, since the lower plate portion 40 is not provided as compared with the first embodiment, the structure of the rubber sheet structure 36 can be simplified and the weight thereof can be reduced, and the cost of the water stop device 34 for the road bridge expansion and contraction device can be reduced. advantage over

なお、この第７の実施の形態には、上述した第３～第６の実施の形態が適用可能である。
また、ゴムシート構造体３６Ａに反力板部４６Ａを設けず、両側の側板部３８の上下方向の中間部を接続する反力板部４６Ａと同形状の接続板部を設け、この接続板部に、外力が掛かっていない状態で第３の形状となるばね鋼板を埋め込み、両側の側板部３８が互いに対向する端部１４の端面１４Ａに接触した状態で第３の形状から湾曲変形され第１の形状に戻ろうとするばね鋼板の弾性力のみにより両側の側板部３８を互いに対向する端部１４の端面１４Ａに弾接させるようにしてもよい。
この場合には、ばね鋼板が埋め込まれた接続板部により反力板部４６Ａが構成されることになる。 The above-described third to sixth embodiments are applicable to the seventh embodiment.
Further, the rubber sheet structure 36A is not provided with the reaction plate portion 46A, but is provided with a connection plate portion having the same shape as the reaction plate portion 46A that connects the vertical intermediate portions of the side plate portions 38 on both sides. A spring steel plate that assumes the third shape when no external force is applied is embedded therein, and the side plate portions 38 on both sides contact the end surfaces 14A of the end portions 14 facing each other, and are curvedly deformed from the third shape to form the first shape. The side plate portions 38 on both sides may be brought into elastic contact with the end surfaces 14A of the end portions 14 opposed to each other only by the elastic force of the spring steel plates that tend to return to the shape of .
In this case, the reaction plate portion 46A is composed of the connecting plate portion in which the spring steel plate is embedded.

なお、本実施の形態では、両側の側板部３８が道路橋１２を構成する要素の互いに対向する端部１４の端面１４Ａに接触していない状態、すなわち、ゴムシート構造体３６、３６Ａに外力が掛かっていない状態の反力板部４６、４６Ａの第１、第３の形状、ばね鋼板５０の第２の形状が平板状を呈している場合について説明したが、第１～第３の形状は湾曲した形状であってもよく、第１～第３の形状は実施の形態の形状に限定されない。
また、両側の側板部３８が互いに対向する端部１４の端面１４Ａに接触した状態で反力板部４６は、下方に凸状の湾曲形状になった場合について説明したが、橋軸方向に反力板部４６が圧縮された形状は、上方に凸状の湾曲部と下方に凸状の湾曲部とが橋軸方向に交互に並べられた形状であってもよく、実施の形態の形状に限定されない。 In the present embodiment, the side plate portions 38 on both sides are not in contact with the end surfaces 14A of the opposing ends 14 of the elements constituting the road bridge 12, that is, the rubber sheet structures 36, 36A are subjected to an external force. The case where the first and third shapes of the reaction plate portions 46 and 46A in the unapplied state and the second shape of the spring steel plate 50 are flat has been described. A curved shape may be used, and the first to third shapes are not limited to the shapes in the embodiment.
In addition, while the side plate portions 38 on both sides are in contact with the end surfaces 14A of the end portions 14 facing each other, the reaction plate portion 46 has a downwardly convex curved shape. The shape in which the force plate portion 46 is compressed may be a shape in which upwardly convex curved portions and downwardly convex curved portions are alternately arranged in the direction of the bridge axis. Not limited.

１０ 道路橋伸縮装置
１２ 道路橋
１４ 端部
１４Ａ 端面
１８ 継手部材
２２ 凹部
２２Ａ 底面
３４ 道路橋伸縮装置用止水装置
３６ ゴムシート構造体
３６Ａ ゴムシート構造体
３８ 側板部
３８０２ 傾斜面
４０ 下板部
４２ 係止部材
４２０４ 支持板
４４ 弾接部
４６ 反力板部
４６Ａ 反力板部
５０ ばね鋼板
５４ 変形促進部 10 road bridge expansion and contraction device 12 road bridge 14 end portion 14A end surface 18 joint member 22 recess 22A bottom surface 34 road bridge expansion and contraction device water stop device 36 rubber sheet structure 36A rubber sheet structure 38 side plate portion 3802 inclined surface 40 lower plate portion 42 Locking member 4204 Support plate 44 Elastic contact portion 46 Reaction plate portion 46A Reaction plate portion 50 Spring steel plate 54 Deformation promoting portion

Claims (9)

道路橋を構成する要素の互いに対向する端部に、それぞれ前記対向する前記端部に向けて開放状でかつ上方に開放状の凹部が設けられ、
前記道路橋を構成する要素の互いに対向する端部と共に前記道路橋の継ぎ目部を構成し前記互いに対向する端部の端面間に前記道路橋の橋軸方向と直交する方向に延在形成される遊間の伸縮を吸収する道路橋伸縮装置が、前記凹部に充填された後打ちコンクリートを介して取り付けられ、
前記道路橋を構成する要素の互いに対向する端部の間で前記道路橋伸縮装置の下方に設けられる道路橋伸縮装置用止水装置であって、
前記道路橋伸縮装置用止水装置は、前記道路橋の橋軸方向に延在する幅と前記橋軸方向と直交する方向に延在する長さとを有するゴムシート構造体を備え、
前記ゴムシート構造体は、
前記幅方向の両端に設けられ前記互いに対向する端部の端面にそれぞれ接触可能でそれらの間は上方に開放されている両側の側板部と、
前記橋軸方向と直交する方向における前記道路橋伸縮装置の長さ方向の全長にわたって延在すると共に前記幅方向に延在して前記両側の側板部の下端を接続する下板部と、
前記両側の側板部と一体的に設けられ前記下板部の上方で前記幅方向に延在して前記両側の側板部の上下方向の中間部を接続し、前記ゴムシート構造体に外力が掛かっていない状態で平面上を延在する第１の形状となり、前記両側の側板部が前記互いに対向する端部の端面に接触した状態で前記第１の形状から湾曲変形され前記第１の形状に戻ろうとする弾性力により前記両側の側板部を前記互いに対向する端部の端面に弾接させる反力板部と、
前記両側の側板部から前記幅方向の外側に突設され前記両側の側板部が前記互いに対向する端部の端面に弾接した状態で前記凹部の底面に係止して前記ゴムシート構造体が前記対向する端部間に吊り下げられた状態を保持し前記凹部に前記後打ちコンクリートが充填されることで前記ゴムシート構造体を前記互いに対向する端部間に設置する鋼製の係止部材とを備え、
平面視した場合、橋軸方向と直交する方向において前記下板部の両端は前記反力板部および前記道路橋伸縮装置の両端よりも外側に突出し、
前記下板部の橋軸方向と直交する方向の両端に前記両側の側板部を接続する起立壁が起立され、
前記下板部の橋軸方向と直交する方向の両端寄りの箇所に、前記下板部上に溜まった雨水排出用の排水管部が下方に突設されている、
ことを特徴とする道路橋伸縮装置用止水装置。 Concavities that are open toward the opposing ends and open upward are provided at the opposing ends of the elements that constitute the road bridge,
Together with the ends facing each other of the elements constituting the road bridge, they form joints of the road bridge and extend between the end surfaces of the ends facing each other in a direction perpendicular to the axis direction of the road bridge. A road bridge expansion and contraction device that absorbs the expansion and contraction of the clearance is attached via the post-cast concrete filled in the recess,
A water stop device for a road bridge expansion/contraction device provided below the road bridge expansion/contraction device between mutually facing ends of elements constituting the road bridge,
The road bridge expansion and contraction device water stop device comprises a rubber sheet structure having a width extending in the axial direction of the road bridge and a length extending in a direction orthogonal to the axial direction,
The rubber sheet structure is
side plate portions provided at both ends in the width direction and capable of coming into contact with the end surfaces of the mutually opposing ends, and the space therebetween being open upward ;
a lower plate portion extending over the entire length in the length direction of the road bridge expansion and contraction device in a direction orthogonal to the bridge axis direction and extending in the width direction to connect the lower ends of the side plate portions on both sides;
The rubber sheet structure is provided integrally with the side plate portions on both sides and extends in the width direction above the lower plate portion to connect the vertical intermediate portions of the side plate portions on both sides so that an external force is applied to the rubber sheet structure. It assumes a first shape extending on a plane in a state in which it is not closed, and is curvedly deformed from the first shape to the first shape while the side plate portions on both sides are in contact with the end faces of the mutually opposing end portions. a reaction force plate portion that causes the side plate portions on both sides to elastically contact the end surfaces of the mutually opposing end portions by an elastic force that tends to return;
The side plate portions protrude outward in the width direction from the side plate portions on both sides and are engaged with the bottom surface of the recess in a state in which the side plate portions are in elastic contact with the end surfaces of the mutually opposing end portions, thereby forming the rubber sheet structure. A steel locking member that maintains a suspended state between the opposing ends and installs the rubber sheet structure between the opposing ends by filling the recess with the post-cast concrete. and
When viewed from above, both ends of the lower plate portion protrude outward from both ends of the reaction plate portion and the road bridge expansion and contraction device in a direction orthogonal to the bridge axis direction,
Standing walls connecting the side plate portions on both sides are erected at both ends of the lower plate portion in a direction orthogonal to the bridge axis direction,
Drainage pipes for discharging rainwater collected on the lower plate portion project downward at locations near both ends of the lower plate portion in a direction orthogonal to the bridge axis direction,
A water stop device for a road bridge expansion and contraction device characterized by: 道路橋を構成する要素の互いに対向する端部に、それぞれ前記対向する前記端部に向けて開放状でかつ上方に開放状の凹部が設けられ、
前記道路橋を構成する要素の互いに対向する端部と共に前記道路橋の継ぎ目部を構成し前記互いに対向する端部の端面間に前記道路橋の橋軸方向と直交する方向に延在形成される遊間の伸縮を吸収する道路橋伸縮装置が、前記凹部に充填された後打ちコンクリートを介して取り付けられ、
前記道路橋を構成する要素の互いに対向する端部の間で前記道路橋伸縮装置の下方に設けられる道路橋伸縮装置用止水装置であって、
前記道路橋伸縮装置用止水装置は、前記道路橋の橋軸方向に延在する幅と前記橋軸方向と直交する方向に延在する長さとを有するゴムシート構造体を備え、
前記ゴムシート構造体は、
前記幅方向の両端に設けられ前記互いに対向する端部の端面にそれぞれ接触可能でそれらの間は上方に開放されている両側の側板部と、
前記両側の側板部と一体的に設けられ前記橋軸方向と直交する方向における前記道路橋伸縮装置の長さ方向の全長にわたって延在すると共に前記幅方向に延在して前記両側の側板部の上下方向の中間部を接続し、前記ゴムシート構造体に外力が掛かっていない状態で平面上を延在する第３の形状となり、前記両側の側板部が前記互いに対向する端部の端面に接触した状態で前記第３の形状から湾曲変形され前記第３の形状に戻ろうとする弾性力により前記両側の側板部を前記互いに対向する端部の端面に弾接させる反力板部と、
前記両側の側板部から前記幅方向の外側に突設され前記両側の側板部が前記互いに対向する端部の端面に弾接した状態で前記凹部の底面に係止して前記ゴムシート構造体が前記対向する端部間に吊り下げられた状態を保持し前記凹部に前記後打ちコンクリートが充填されることで前記ゴムシート構造体を前記互いに対向する端部間に設置する鋼製の係止部材とを備え、
平面視した場合、橋軸方向と直交する方向において前記反力板部の両端は前記道路橋伸縮装置の両端よりも外側に突出し、
前記反力板部の橋軸方向と直交する方向の両端に前記両側の側板部を接続する起立壁が起立され、
前記反力板部の橋軸方向と直交する方向の両端寄りの箇所に、前記反力板部上に溜まった雨水排出用の排水管部が下方に突設されている、
ことを特徴とする道路橋伸縮装置用止水装置。 Concavities that are open toward the opposing ends and open upward are provided at the opposing ends of the elements that constitute the road bridge,
Together with the ends facing each other of the elements constituting the road bridge, they form joints of the road bridge and extend between the end surfaces of the ends facing each other in a direction perpendicular to the axis direction of the road bridge. A road bridge expansion and contraction device that absorbs the expansion and contraction of the clearance is attached via the post-cast concrete filled in the recess,
A water stop device for a road bridge expansion/contraction device provided below the road bridge expansion/contraction device between mutually facing ends of elements constituting the road bridge,
The road bridge expansion and contraction device water stop device comprises a rubber sheet structure having a width extending in the axial direction of the road bridge and a length extending in a direction orthogonal to the axial direction,
The rubber sheet structure is
side plate portions provided at both ends in the width direction and capable of coming into contact with the end surfaces of the mutually opposing ends, and the space therebetween being open upward ;
It is provided integrally with the side plate portions on both sides, extends over the entire length of the road bridge expansion and contraction device in the direction perpendicular to the axial direction of the bridge, and extends in the width direction to extend in the width direction of the side plate portions on both sides . A third shape connecting the middle portions in the vertical direction and extending on a plane in a state where no external force is applied to the rubber sheet structure, and the side plate portions on both sides are connected to the end faces of the end portions facing each other. a reaction force plate portion that causes the side plate portions on both sides to be in elastic contact with the end surfaces of the mutually opposing end portions by an elastic force that bends and deforms from the third shape in the contact state and returns to the third shape;
The side plate portions protrude outward in the width direction from the side plate portions on both sides and are engaged with the bottom surface of the recess in a state in which the side plate portions are in elastic contact with the end surfaces of the mutually opposing end portions, thereby forming the rubber sheet structure. A steel locking member that maintains a suspended state between the opposing ends and installs the rubber sheet structure between the opposing ends by filling the recess with the post-cast concrete. and
When viewed from above, both ends of the reaction plate portion protrude outward from both ends of the road bridge expansion and contraction device in a direction perpendicular to the bridge axis direction,
Standing walls connecting the side plate portions on both sides are erected at both ends of the reaction plate portion in a direction orthogonal to the bridge axis direction,
Drainage pipes for discharging rainwater accumulated on the reaction plate protrude downward at locations near both ends of the reaction plate in a direction orthogonal to the bridge axis direction,
A water stop device for a road bridge expansion and contraction device characterized by: 前記反力板部は、前記ゴムシート構造体の前記長さ方向の全長にわたって設けられている、
ことを特徴とする請求項１記載の道路橋伸縮装置用止水装置。 The reaction force plate portion is provided over the entire length in the length direction of the rubber sheet structure,
The water stop device for a road bridge expansion and contraction device according to claim 1 , characterized in that: 前記反力板部は、前記ゴムシート構造体の前記長さ方向に間隔をおいて複数設けられている、
ことを特徴とする請求項１記載の道路橋伸縮装置用止水装置。 A plurality of the reaction force plate portions are provided at intervals in the length direction of the rubber sheet structure,
The water stop device for a road bridge expansion and contraction device according to claim 1 , characterized in that: 前記反力板部に、前記反力板部の橋軸方向である幅方向に延在するばね鋼板が埋め込まれ、
前記ばね鋼板は、前記ゴムシート構造体に外力が掛かっていない状態で前記第１の形状に沿って延在する第２の形状となり、前記両側の側板部が前記互いに対向する端部の端面に接触した状態で前記第２の形状から湾曲変形され前記第２の形状に戻ろうとする弾性力により前記反力板部と協働して前記両側の側板部を前記互いに対向する端部の端面に弾接させる、
ことを特徴とする請求項１、３、４の何れか１項記載の道路橋伸縮装置用止水装置。 A spring steel plate extending in the width direction, which is the bridge axis direction of the reaction plate portion, is embedded in the reaction plate portion,
The spring steel plate assumes a second shape extending along the first shape in a state in which no external force is applied to the rubber sheet structure, and the side plate portions on both sides are arranged on the end faces of the ends facing each other. The side plate portions on both sides are moved to the end faces of the end portions facing each other in cooperation with the reaction force plate portions due to the elastic force that bends and deforms from the second shape in the contact state and tries to return to the second shape. to strike,
A water stop device for a road bridge expansion joint according to any one of claims 1, 3 and 4 , characterized in that: 前記両側の側板部に、剛性を有し前記係止部材を支持する支持板が埋め込まれ、
前記両側の側板部が、道路橋を構成する要素の互いに対向する端部の端面に弾接された状態で前記支持板は、前記端部の端面に平行する、
ことを特徴とする請求項１～４の何れか１項記載の道路橋伸縮装置用止水装置。 Support plates having rigidity and supporting the locking member are embedded in the side plate portions on both sides,
The side plate portions on both sides are in elastic contact with the end surfaces of the opposite ends of the elements constituting the road bridge, and the support plate is parallel to the end surfaces of the end portions,
The water stop device for a road bridge expansion and contraction device according to any one of claims 1 to 4 , characterized in that: 前記係止部材は、前記支持板の上部から突設され、
前記支持板の下部は、前記反力板部が接続する前記側板部の箇所に位置している、
ことを特徴とする請求項６記載の道路橋伸縮装置用止水装置。 The locking member protrudes from an upper portion of the support plate,
A lower portion of the support plate is located at a portion of the side plate portion to which the reaction plate portion is connected,
The water stop device for a road bridge expansion and contraction device according to claim 6 , characterized in that: 前記両側の側板部が互いに近づく方向に変位する際に、前記反力板部に、他の箇所に比べて率先して変形し前記湾曲変形する方向を定める変形促進部が設けられている、
ことを特徴とする請求項１～４の何れか１項記載の道路橋伸縮装置用止水装置。 When the side plate portions on both sides are displaced in a direction toward each other, the reaction force plate portion is provided with a deformation promoting portion that deforms more proactively than other portions and determines the direction of bending deformation,
The water stop device for a road bridge expansion and contraction device according to any one of claims 1 to 4 , characterized in that: 前記端部の端面に圧接される前記両側の側板部の外面に、上方に至るにつれて前記端面から次第に離れる傾斜面が形成されている、
ことを特徴とする請求項１～４の何れか１項記載の道路橋伸縮装置用止水装置。 The outer surfaces of the side plate portions on both sides that are in pressure contact with the end surfaces of the end portions are formed with inclined surfaces that gradually move away from the end surfaces as they go upward.
The water stop device for a road bridge expansion and contraction device according to any one of claims 1 to 4 , characterized in that:
JP2018094367A 2018-05-16 2018-05-16 Water stoppage device for road bridge expansion and contraction device Active JP7192246B2 (en)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2010150849A (en) 2008-12-26 2010-07-08 Bondo Engineering Kk Structure for mounting gutter in joint portion of road bridge
JP2015218437A (en) 2014-05-14 2015-12-07 国立研究開発法人土木研究所 Concrete joint portion joint drain and sealant, and installation method of drain and sealant in concrete joint portion joint
JP2018003315A (en) 2016-06-28 2018-01-11 横浜ゴム株式会社 Expansion device for road bridge

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JPS574405U (en) * 1980-06-04 1982-01-11
JPS57174504U (en) * 1981-04-30 1982-11-04
JPS6035601Y2 (en) * 1981-07-10 1985-10-23 惣一郎 清水 road expansion joint

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2010150849A (en) 2008-12-26 2010-07-08 Bondo Engineering Kk Structure for mounting gutter in joint portion of road bridge
JP2015218437A (en) 2014-05-14 2015-12-07 国立研究開発法人土木研究所 Concrete joint portion joint drain and sealant, and installation method of drain and sealant in concrete joint portion joint
JP2018003315A (en) 2016-06-28 2018-01-11 横浜ゴム株式会社 Expansion device for road bridge

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