JP5319632B2 - Fixed structure of waterstop - Google Patents

Fixed structure of waterstop Download PDF

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JP5319632B2
JP5319632B2 JP2010205052A JP2010205052A JP5319632B2 JP 5319632 B2 JP5319632 B2 JP 5319632B2 JP 2010205052 A JP2010205052 A JP 2010205052A JP 2010205052 A JP2010205052 A JP 2010205052A JP 5319632 B2 JP5319632 B2 JP 5319632B2
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waterstop
holding member
groove
opening
fixing
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JP2012062618A (en
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伸 吉野
章 丸尾
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東京ファブリック工業株式会社
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この発明は、橋梁、高架橋などの路面を形成する床版同士の継目部において、継目部から落下する雨水等を止水して排水する止水樋の固定構造に関する。詳しくは、路面幅員方向に連続した一体の止水樋を継目部の所定位置に容易に取り付け固定することのできる止水樋の固定構造に関する。   The present invention relates to a fixing structure for a waterstop that drains water that stops rainwater and the like falling from a joint at a joint between floor slabs that form road surfaces such as bridges and viaducts. More specifically, the present invention relates to a fixing structure for a waterstop that can easily attach and fix an integrated waterstop that is continuous in the road surface width direction to a predetermined position of a joint.

橋梁、高架橋などにおいて、路面を形成する床版同士の継目部は、隣接する床版の間に伸縮可能な間隙が設けられている。この継目部により床版の温度変化による伸縮、通行車両の荷重による撓み、時間経過による寸法変化などの影響を吸収し、車両等の円滑な通行が可能となるのである。この継目部に流れ込んだ雨水等はそのままでは継目部の下方に落下してしまうので、この雨水等の落下を防止するとともに所定の排水位置に誘導するために断面Ｕ字形の止水樋が設置される。   In bridges, viaducts, and the like, the joint between the floor slabs that form the road surface is provided with a stretchable gap between adjacent floor slabs. This joint portion absorbs the influence of the expansion and contraction of the floor slab due to the temperature change, the bending due to the load of the passing vehicle, the dimensional change over time, and the like, and the smooth passage of the vehicle or the like becomes possible. Rainwater that has flowed into the seam will fall below the seam as it is, so a water trough with a U-shaped cross section is installed to prevent the rainwater from falling and to guide it to a predetermined drainage position. The

従来は、この止水樋はボルトとナットにより所定位置に固定されたり、接着剤により所定位置に固定されたりしていた。しかし、この止水樋の設置作業は、作業位置が床版の下面側の作業しにくい位置であることもあり、作業員に困難な長時間の作業を強いるものであった。また、下記の特許文献１のような止水樋の設置方法も公知である。特許文献１には、ワイヤと接着手段とを使用して止水樋を橋梁等に接着固定するようにした施工方法が記載されている。   Conventionally, the waterstop is fixed at a predetermined position by a bolt and a nut, or fixed at a predetermined position by an adhesive. However, the installation work of the waterstop is sometimes difficult to work on the lower surface side of the floor slab, forcing the worker to perform difficult work for a long time. Moreover, the installation method of the waterstop like the following patent document 1 is also well-known. Patent Document 1 describes a construction method in which a waterstop is bonded and fixed to a bridge or the like using a wire and an adhesive means.

特開２００８−２４８４９４号公報JP 2008-248494 A

前述のように、ボルトとナットなどによる従来の止水樋の設置作業は、長時間の困難な作業を必要とし、施工コストを引き上げる原因となっていた。また、特許文献１やその他の接着による施工方法では、施工時の作業の困難さもさることながら、劣化したり損壊した古い止水樋を新しいものに交換する作業が困難であった。すなわち古い止水樋を取り外すことが難しかった。このように、従来の止水樋の固定構造では、設置作業や交換作業が困難であり、作業時間も長時間を要するという問題点があった。   As described above, the installation work of the conventional waterstop using bolts and nuts requires a long and difficult work, which increases the construction cost. Moreover, in the construction method by patent document 1 and the other adhesion | attachment, the operation | work which replace | exchanges the old waterstop which deteriorated or was damaged was replaced with the new thing besides the difficulty of the operation | work at the time of construction. That is, it was difficult to remove the old waterstop. As described above, the conventional waterstop fixing structure has a problem that it is difficult to perform installation work and replacement work and requires a long work time.

そこで、本発明は、路面幅員方向に連続した一体の止水樋を床版の継目部の所定位置に容易に取り付け固定することができ、また、交換のために止水樋を取り外すことも容易に行うことのできる止水樋の固定構造を提供することを目的とする。   Therefore, the present invention can easily attach and fix an integrated waterstop continuous in the width direction of the road surface to a predetermined position of the joint of the floor slab, and can easily remove the waterstop for replacement. It is an object of the present invention to provide a fixing structure for a waterstop that can be used in the first place.

上記目的を達成するために、本発明の止水樋の固定構造は、下方の開口部が狭く上方の底部が広く形成された溝状凹部を備えた樋固定部と、上方が開放され雨水等の誘導が可能な有底形状であって、両上端部に板厚の厚い部分が形成された止水樋と、前記樋固定部の前記溝状凹部に装着可能であるとともに前記止水樋の両上端部を保持可能に形成された弾性材料からなる保持部材とを有し、前記保持部材は、前記止水樋の両上端部を弾性力により挟持する挟持部と、前記挟持部を弾性力に抗して押し広げる開閉腕部とを備え、前記開閉腕部が前記溝状凹部の上方底部側に押し込まれた状態では前記挟持部が弾性力により狭められて前記止水樋の両上端部を保持可能であり、前記開閉腕部が前記溝状凹部の開口部近傍に引き出された状態では前記挟持部が開放されて前記保持部材内に前記止水樋の両上端部を挿入可能なものである。   In order to achieve the above object, the structure for fixing a waterstop according to the present invention comprises: A waterstop with a bottomed shape that can be guided to the upper end and a thick plate formed at both upper ends, and can be mounted in the groove-shaped recess of the hook fixing portion and the waterstop A holding member made of an elastic material formed so as to be able to hold both upper end portions, the holding member holding the both upper end portions of the waterstop by elastic force, and the holding portion elastic force Open and close arm portions that spread out against the upper and lower ends of the waterstop when the open and close arm portions are pushed into the upper bottom side of the groove-like recess and the holding portion is narrowed by an elastic force. In a state where the opening / closing arm is pulled out in the vicinity of the opening of the groove-shaped recess. Clamping portion is opened is capable inserted both upper ends of the waterproofing gutter in the holding member.

また、上記の止水樋の固定構造において、前記止水樋は、全体の断面形状がＵ字形のものであることが好ましい。   Moreover, in the fixing structure of the waterstop, the waterstop preferably has a U-shaped cross section as a whole.

また、上記の止水樋の固定構造において、前記止水樋は、その両上端部の断面形状が略逆三角形に形成されたものであり、前記保持部材は、前記止水樋の前記上端部を保持可能な略逆三角形に形成されたものであることが好ましい。   Moreover, in the fixing structure of the waterstop, the waterstop is formed such that the cross-sectional shapes of both upper ends thereof are substantially inverted triangles, and the holding member is the upper end of the waterstop. Is preferably formed in a substantially inverted triangle capable of holding

また、上記の止水樋の固定構造において、前記開閉腕部は、その先端部に外方側に突出する突起が形成されたものであり、前記溝状凹部は、前記開閉腕部の前記突起が係合する係合凹部が２位置に設けられたものであることが好ましい。   Further, in the structure for fixing the waterstop, the opening / closing arm portion is formed with a protrusion protruding outward at the tip thereof, and the groove-like recess is the protrusion of the opening / closing arm portion. It is preferable that the engagement recesses to be engaged are provided at two positions.

本発明は、以上のように構成されているので、以下のような効果を奏する。   Since this invention is comprised as mentioned above, there exist the following effects.

本発明の止水樋の固定構造により、路面幅員方向に連続した一体の止水樋を床版の継目部の所定位置に容易に取り付け固定することができる。また、固定した止水樋を修理、交換等のために取り外す作業も容易に行うことができる。そのため、橋梁等の建設工事のコストを低減させることができ、工期を短縮することができる。   With the fixing structure of the waterstop according to the present invention, an integrated waterstop that is continuous in the width direction of the road surface can be easily attached and fixed at a predetermined position of the joint portion of the floor slab. Moreover, the work which removes the fixed waterstop for repair, replacement | exchange etc. can also be performed easily. Therefore, it is possible to reduce the cost of construction work such as bridges and shorten the construction period.

図１は、橋梁などの床版の継目部の構造と本発明の止水樋の固定構造を示す断面図である。FIG. 1 is a cross-sectional view showing the structure of a joint portion of a floor slab such as a bridge and the structure for fixing a waterstop according to the present invention. 図２は、継目部のフェースプレート４１の形状を示す平面図である。FIG. 2 is a plan view showing the shape of the face plate 41 at the joint. 図３は、樋固定部２の構成を示す断面図である。FIG. 3 is a cross-sectional view showing the configuration of the heel fixing portion 2. 図４は、保持部材３の構成を示す断面図である。FIG. 4 is a cross-sectional view showing the configuration of the holding member 3. 図５は、樋固定部２に対する保持部材３の装着状態を示す断面図である。FIG. 5 is a cross-sectional view showing a mounting state of the holding member 3 with respect to the heel fixing portion 2. 図６は、止水樋１を樋固定部２に固定する手順を示す断面図である。FIG. 6 is a cross-sectional view showing a procedure for fixing the waterstop rod 1 to the rod fixing portion 2.

本発明の実施の形態について図面を参照して説明する。図１は、本発明の止水樋の固定構造を適用する橋梁などの床版の継目部の構造を示す断面図である。橋梁、高架橋などにおいて、路面を形成する床版４，４同士の継目部は、隣接する床版４，４の間に伸縮可能な間隙が設けられている。この継目部により床版４，４の温度変化による伸縮、通行車両の荷重による撓み、時間経過による寸法変化などの影響を吸収し、車両等の円滑な通行が可能となるのである。床版４，４は、図１の矢印に示すように水平方向に伸縮移動したりする。   Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a structure of a joint portion of a floor slab such as a bridge to which a fixing structure of a still water gutter according to the present invention is applied. In bridges, viaducts, etc., the joints between the floor slabs 4, 4 that form the road surface are provided with a stretchable gap between the adjacent floor slabs 4, 4. This joint portion absorbs the influence of expansion and contraction due to temperature changes of the floor slabs 4 and 4, deflection due to the load of the passing vehicle, dimensional change due to passage of time, etc., and smooth passage of the vehicle or the like becomes possible. The floor slabs 4 and 4 extend and contract in the horizontal direction as indicated by arrows in FIG.

床版４の継目部の表面には金属製のフェースプレート４１が設けられている。図２は継目部のフェースプレート４１の形状を示す平面図である。フェースプレート４１の継目部には、図２に示すようなフィンガー部４２が形成されており、このフィンガー部４２が互い違いに配置されている。この構造により、継目部での床版４，４同士の伸縮移動が可能であるとともに、継目部における車両等の通行も円滑に行うことができる。   A metal face plate 41 is provided on the surface of the joint portion of the floor slab 4. FIG. 2 is a plan view showing the shape of the face plate 41 at the joint. Finger portions 42 as shown in FIG. 2 are formed at the joint portion of the face plate 41, and the finger portions 42 are alternately arranged. With this structure, the floor slabs 4 and 4 can be expanded and contracted at the joint portion, and the vehicle or the like can be smoothly passed through the joint portion.

継目部における床版４，４の間のフェースプレート４１裏側には、弾性シール材５が配置されており、継目部から雨水等が下方に流下するのを防止している。弾性シール材５はゴム等の柔軟性を有する防水材料からなる。また、弾性シール材５の下方にはバックアップ材６が配置されている。バックアップ材６は弾性シール材５をフェースプレート４１裏面に密着保持するための裏打ち部材である。このバックアップ材６は、床版４，４の伸縮方向の移動に追従できるだけの十分な弾性を有している。   An elastic sealing material 5 is disposed on the back side of the face plate 41 between the floor slabs 4 and 4 at the joint portion to prevent rainwater or the like from flowing downward from the joint portion. The elastic sealing material 5 is made of a waterproof material having flexibility such as rubber. Further, a backup material 6 is disposed below the elastic seal material 5. The backup material 6 is a backing member for closely holding the elastic seal material 5 on the back surface of the face plate 41. This backup material 6 has sufficient elasticity to follow the movement of the floor slabs 4, 4 in the expansion / contraction direction.

この継目部に流れ込んだ雨水等は、弾性シール材５によってそのまま落下することは防止されているが、弾性シール材５でも完全に雨水等の落下を遮断することはできない。弾性シール材５から漏れ落ちる雨水等は、止水樋１によって落下を防止され、所定の排水位置に誘導される。図１に示すように、止水樋１は断面Ｕ字形とされ、バックアップ材６の下面に配置されている。なお、止水樋１は、断面Ｕ字形に限らず、断面形状をＶ字形、Ｗ字形、上方が開放された四角形等の形状としてもよい。止水樋１の断面形状としては、上方が開放され雨水等の誘導が可能な有底形状であればよい。   The rainwater or the like flowing into the joint is prevented from dropping as it is by the elastic sealing material 5, but even the elastic sealing material 5 cannot completely block the rainwater or the like from dropping. Rainwater or the like leaking from the elastic sealing material 5 is prevented from falling by the waterstop 1 and is guided to a predetermined drainage position. As shown in FIG. 1, the waterstop 1 has a U-shaped cross section and is disposed on the lower surface of the backup material 6. The waterstop 1 is not limited to a U-shaped cross section, and the cross-sectional shape may be a V shape, a W shape, a quadrilateral shape with an open top, or the like. The cross-sectional shape of the waterstop 1 may be a bottomed shape that is open at the top and can guide rainwater or the like.

従来は、このような止水樋はボルトとナットにより所定位置に固定したり、接着剤により所定位置に固定したりしていた。しかし、このような従来の止水樋の設置作業は、作業位置が床版の下面側の作業しにくい位置であることもあり、作業員に困難な長時間の作業を強いるものであった。また、劣化したり損壊した古い止水樋を新しいものに交換する作業も困難であった。   Conventionally, such a waterstop is fixed at a predetermined position by a bolt and a nut, or fixed at a predetermined position by an adhesive. However, in such a conventional waterstop installation work, the work position may be a position where it is difficult to work on the lower surface side of the floor slab, forcing a worker to perform a long work that is difficult. In addition, it was difficult to replace an old waterstop that was deteriorated or damaged with a new one.

本発明では、止水樋１の固定を独自の固定構造によって行うようにして、止水樋１を床版４の継目部の下面に固定する作業を極めて容易に行うことができるようにしたものである。また、古い止水樋１を交換のために取り外すことも容易に行うことができる。固定構造の詳細は後述するが、止水樋１は樋固定部２に固定される。   In the present invention, the waterstop 1 is fixed by a unique fixing structure so that the work of fixing the waterstop 1 to the lower surface of the joint portion of the floor slab 4 can be performed very easily. It is. In addition, the old waterstop 1 can be easily removed for replacement. Although details of the fixing structure will be described later, the waterstop rod 1 is fixed to the rod fixing portion 2.

樋固定部２は溝を形成した細長い棒状の部材であり、溝の開口面を下方に向けて設置されている。樋固定部２は接着やビス等の任意の方法で、バックアップ材６および床版４に固定される。この樋固定部２は、長さも止水樋１の全長ほどは長くなくてよい。適度な長さの樋固定部２を長さ方向に所定の間隔で設置すればよく、重量も軽いためバックアップ材６下面への設置作業は容易である。   The eaves fixing portion 2 is an elongated rod-like member having a groove, and is installed with the opening surface of the groove facing downward. The heel fixing part 2 is fixed to the backup material 6 and the floor slab 4 by an arbitrary method such as adhesion or screws. The heel fixing portion 2 does not have to be as long as the full length of the still water ridge 1. It is sufficient that the heel fixing portions 2 having an appropriate length are installed at predetermined intervals in the length direction, and the weight is light, so that the installation work on the lower surface of the backup material 6 is easy.

止水樋１は、柔軟なゴム材からなる板状の部材をＵ字状に屈曲させて、止水樋１として構成することができる。止水樋１の上端部１１は、板厚が先端側ほど厚くなる形状に形成されている。止水樋１の上端部１１は、最上端が最も厚肉となる略逆三角形の形状に形成されている。上端部１１のこの厚肉部分を樋固定部２に固定するのである。なお、この上端部１１の厚肉部分の形状は、逆三角形に限らず、四角形、円形等の任意の形状とすることができる。ただし、保持部材３の形状との適合性を考慮すると逆三角形が好ましい。   The waterstop 1 can be configured as a waterstop 1 by bending a plate-like member made of a flexible rubber material into a U shape. The upper end portion 11 of the waterstop 1 is formed in a shape in which the plate thickness increases toward the tip side. The upper end portion 11 of the waterstop 1 is formed in a substantially inverted triangular shape with the uppermost end being the thickest. This thick portion of the upper end portion 11 is fixed to the heel fixing portion 2. The shape of the thick portion of the upper end portion 11 is not limited to an inverted triangle, and may be any shape such as a quadrangle and a circle. However, in consideration of compatibility with the shape of the holding member 3, an inverted triangle is preferable.

図３は、樋固定部２の構成を示す断面図である。樋固定部２は溝状凹部２１が形成された細長い棒状の部材であり、溝状凹部２１の開口面を下方に向けて設置される。溝状凹部２１は、その断面形状が上方（溝の底面側）ほど溝幅が広くなるような図示のような形状に形成されている。   FIG. 3 is a cross-sectional view showing the configuration of the heel fixing portion 2. The heel fixing part 2 is an elongated rod-like member in which a groove-like recess 21 is formed, and is installed with the opening surface of the groove-like recess 21 facing downward. The groove-shaped recess 21 is formed in a shape as shown in the figure such that the groove width becomes wider as the cross-sectional shape is higher (the bottom surface side of the groove).

また、溝状凹部２１には、その底面の近傍位置の両側に係合凹部２２，２２が形成されており、開口面の近傍位置の両側にも係合凹部２３，２３が形成されている。これらの係合凹部２２，２３には、後述する保持部材３の突起３３，３３が係合して、保持部材３の開閉状態を規定する。   Further, the groove-like recess 21 is formed with engagement recesses 22 and 22 on both sides in the vicinity of the bottom surface, and the engagement recesses 23 and 23 are also formed on both sides in the vicinity of the opening surface. The engagement recesses 22 and 23 are engaged with projections 33 and 33 of the holding member 3 to be described later to define the open / closed state of the holding member 3.

図４は、保持部材３の構成を示す断面図である。保持部材３は紙を束ねるためのクリップと似たような断面構造をしており、全体がばね鋼などの弾性材料の薄板で形成されている。挟持部３１は止水樋１の上端部１１を挟んで保持する部分である。保持部材３の本体部は上端部１１をちょうど収納可能な略逆三角形の形状に形成されている。   FIG. 4 is a cross-sectional view showing the configuration of the holding member 3. The holding member 3 has a cross-sectional structure similar to a clip for bundling paper, and is entirely formed of a thin plate of an elastic material such as spring steel. The sandwiching portion 31 is a portion that holds the upper end portion 11 of the waterstop 1 therebetween. The main body of the holding member 3 is formed in a substantially inverted triangular shape that can just accommodate the upper end 11.

開閉腕部３２は、挟持部３１の開閉操作を行うための部分である。保持部材３に外力が加わっていない状態では、図４のように挟持部３１は最も閉じた状態となり、開閉腕部３２は上方が最も開いた状態となっている。この状態から開閉腕部３２の上端を閉じる方向に移動させると、てこの作用により挟持部３１がばね力に抗して開く方向に移動する。開閉腕部３２の上端に作用する力を解除すれば、挟持部３１はばね力により元の閉じた状態に戻る。   The opening / closing arm part 32 is a part for performing an opening / closing operation of the clamping part 31. In a state where no external force is applied to the holding member 3, the clamping portion 31 is in the most closed state as shown in FIG. 4, and the upper and lower arm portions 32 are in the most open state. When the upper end of the opening / closing arm part 32 is moved in the closing direction from this state, the clamping part 31 moves in the opening direction against the spring force by the action of the lever. When the force acting on the upper end of the open / close arm 32 is released, the clamping unit 31 returns to the original closed state by the spring force.

保持部材３は図示のような断面形状であるが、その奥行き方向の長さは適宜の長さとすればよい。保持部材３の長さは樋固定部２の長さよりも短くてよく、１つの樋固定部２に対して複数の保持部材３を所定の間隔で装着することができる。なお、保持部材３は、そのばね力によって止水樋１を十分に保持できる程度のばね剛性に設計されている。すなわち、挟持部３１のばね力による保持力は、止水樋１がその自重で脱落しない程度の十分な大きさとされている。   The holding member 3 has a cross-sectional shape as shown in the drawing, but the length in the depth direction may be an appropriate length. The length of the holding member 3 may be shorter than the length of the heel fixing portion 2, and a plurality of holding members 3 can be attached to one heel fixing portion 2 at a predetermined interval. Note that the holding member 3 is designed to have a spring stiffness that can sufficiently hold the waterstop 1 by its spring force. That is, the holding force by the spring force of the clamping part 31 is set to a sufficient magnitude so that the waterstop 1 does not fall off due to its own weight.

図５は、樋固定部２に対する保持部材３の装着状態を示す断面図である。保持部材３の開閉腕部３２の上端に閉じる方向の力を加えて、開閉腕部３２上端の間隔を狭めると、開閉腕部３２が溝状凹部２１の開口部に挿入可能となる。そして、さらに保持部材３を溝状凹部２１の内部に押し込むと、図５（ａ）に示すように、開閉腕部３２が弾性変形して溝状凹部２１の内部に挿入され、開閉腕部３２の突起３３が開口面の近くの係合凹部２３に入り込み、その位置で突起３３が係合凹部２３に係合する。この位置では、保持部材３の開閉腕部３２上端が間隔の狭い状態で係合されており、挟持部３１は間隔の広い開放状態となってその状態が維持されている。   FIG. 5 is a cross-sectional view showing a mounting state of the holding member 3 with respect to the heel fixing portion 2. When a force in a closing direction is applied to the upper end of the opening / closing arm portion 32 of the holding member 3 to narrow the interval between the upper ends of the opening / closing arm portion 32, the opening / closing arm portion 32 can be inserted into the opening of the groove-shaped recess 21. When the holding member 3 is further pushed into the groove-shaped recess 21, the opening / closing arm 32 is elastically deformed and inserted into the groove-shaped recess 21 as shown in FIG. The protrusion 33 enters the engaging recess 23 near the opening surface, and the protrusion 33 engages with the engaging recess 23 at that position. At this position, the upper ends of the opening / closing arm portions 32 of the holding member 3 are engaged with each other with a narrow interval, and the holding portion 31 is in an open state with a wide interval, and this state is maintained.

保持部材３をこの位置からさらに溝状凹部２１の内部に押し入れることができる。保持部材３をさらに溝状凹部２１内部に押し入れると、図５（ｂ）に示すように、開閉腕部３２の間隔は溝状凹部２１の断面形状に沿って広げられ、逆に挟持部３１の間隔はばね力によって狭められて挟持状態となる。保持部材３を最も溝状凹部２１の内部に押し入れると、開閉腕部３２の突起３３が溝状凹部２１の底面の近くの係合凹部２２に係合する。   The holding member 3 can be further pushed into the groove-shaped recess 21 from this position. When the holding member 3 is further pushed into the groove-shaped recess 21, as shown in FIG. 5B, the interval between the opening and closing arm portions 32 is expanded along the cross-sectional shape of the groove-shaped recess 21. The interval of is narrowed by the spring force to be in a clamping state. When the holding member 3 is pushed most into the groove-shaped recess 21, the projection 33 of the opening / closing arm 32 engages with the engagement recess 22 near the bottom surface of the groove-shaped recess 21.

保持部材３は、溝内に押し込んだり引き出したりすることにより、図５（ａ）の開放状態と、図５（ｂ）の挟持状態を切り換えることができる。止水樋１を保持していない状態では、図５（ａ）の開放状態としておく。また、開放状態からさらに保持部材３を引き出すことにより、保持部材３を樋固定部２から完全に取り外すこともできる。   The holding member 3 can be switched between the opened state shown in FIG. 5A and the sandwiched state shown in FIG. 5B by pushing or pulling it into the groove. In the state where the waterstop 1 is not held, the open state shown in FIG. Further, by further pulling out the holding member 3 from the open state, the holding member 3 can be completely removed from the heel fixing portion 2.

図６は、止水樋１を樋固定部２に固定する手順を示す断面図である。まず、図６（ａ）に示すように、樋固定部２に保持部材３を開放状態で装着しておく。そして、保持部材３の開放されている挟持部３１に止水樋１の上端部１１を挿入する。次に、さらに力を加えて上端部１１を挟持部３１とともに上方に移動させる。すると、図６（ｂ）に示すように、止水樋１の上端部１１は保持部材３の挟持部３１によって挟持され、その位置で固定される。このように、止水樋１の固定作業を、単に上方に押し上げるだけの極めて簡単な操作で遂行することができる。   FIG. 6 is a cross-sectional view showing a procedure for fixing the waterstop rod 1 to the rod fixing portion 2. First, as shown in FIG. 6A, the holding member 3 is attached to the heel fixing portion 2 in an open state. And the upper end part 11 of the waterstop 1 is inserted in the clamping part 31 by which the holding member 3 is open | released. Next, further force is applied to move the upper end portion 11 together with the clamping portion 31 upward. Then, as shown in FIG. 6B, the upper end portion 11 of the waterstop 1 is sandwiched by the sandwiching portion 31 of the holding member 3 and fixed at that position. In this way, the fixing work of the waterstop 1 can be performed by an extremely simple operation that is simply pushed upward.

また、このように固定した止水樋１を修理、交換等のために取り外す作業も容易である。固定されている止水樋１の上端部１１を挟持部３１とともに下方に引き出せば、保持部材３が開放状態となり、止水樋１を簡単に取り外すことができる。ただし、止水樋１を取り外す際に必要な力は、止水樋１の自重を支えるための力よりも十分に大きくしておく。これにより、止水樋１が自重により自然に外れてしまうことが防止される。   Moreover, the work which removes the waterstop 1 fixed in this way for repair, exchange, etc. is also easy. If the upper end portion 11 of the fixed waterstop 1 is pulled downward together with the holding portion 31, the holding member 3 is opened, and the waterstop 1 can be easily removed. However, the force required when removing the waterstop 1 is sufficiently larger than the force for supporting the weight of the waterstop 1. Thereby, it is prevented that the waterstop 1 will come off naturally with dead weight.

以上のような本発明の止水樋の固定構造により、路面幅員方向に連続した一体の止水樋１を床版の継目部の所定位置に容易に取り付け固定することができる。また、固定した止水樋１を修理、交換等のために取り外す作業も容易に行うことができる。そのため、橋梁等の建設工事のコストを低減させることができ、工期を短縮することができる。   With the above-described fixing structure of the waterstop according to the present invention, the integrated waterstop 1 continuous in the road surface width direction can be easily attached and fixed to a predetermined position of the joint portion of the floor slab. Moreover, the work which removes the fixed waterstop 1 for repair, exchange, etc. can also be performed easily. Therefore, it is possible to reduce the cost of construction work such as bridges and shorten the construction period.

本発明によれば、橋梁等の建設工事において、止水樋を床版の継目部の所定位置に容易に取り付け固定することができ、また、固定した止水樋を修理、交換等のために取り外す作業も容易に行うことができるので、橋梁等の建設工事のコストを低減させ、工期を短縮することができる。   According to the present invention, in construction work such as a bridge, the waterstop can be easily attached and fixed to a predetermined position of the joint portion of the floor slab, and the fixed waterstop is repaired, replaced, etc. Since the removal work can be easily performed, the cost of construction work such as a bridge can be reduced and the construction period can be shortened.

１ 止水樋
２ 樋固定部
３ 保持部材
４ 床版
５ 弾性シール材
６ バックアップ材
１１ 上端部
２１ 溝状凹部
２２，２３ 係合凹部
３１ 挟持部
３２ 開閉腕部
３３ 突起
４１ フェースプレート
４２ フィンガー部 DESCRIPTION OF SYMBOLS 1 Water stop 2 Anchor fixed part 3 Holding member 4 Floor slab 5 Elastic seal material 6 Backup material 11 Upper end part 21 Groove-shaped recessed part 22, 23 Engaging recessed part 31 Clamping part 32 Opening / closing arm part 33 Projection 41 Face plate 42 Finger part

Claims (4)

下方の開口部が狭く上方の底部が広く形成された溝状凹部（２１）を備えた樋固定部（２）と、
上方が開放され雨水等の誘導が可能な有底形状であって、両上端部（１１）に板厚の厚い部分が形成された止水樋（１）と、
前記樋固定部（２）の前記溝状凹部（２１）に装着可能であるとともに前記止水樋（１）の両上端部を保持可能に形成された弾性材料からなる保持部材（３）とを有し、
前記保持部材（３）は、前記止水樋（１）の両上端部を弾性力により挟持する挟持部（３１）と、前記挟持部（３１）を弾性力に抗して押し広げる開閉腕部（３２）とを備え、前記開閉腕部（３２）が前記溝状凹部（２１）の上方底部側に押し込まれた状態では前記挟持部（３１）が弾性力により狭められて前記止水樋（１）の両上端部を保持可能であり、前記開閉腕部（３２）が前記溝状凹部（２１）の開口部近傍に引き出された状態では前記挟持部（３１）が開放されて前記保持部材（３）内に前記止水樋（１）の両上端部を挿入可能なものである止水樋の固定構造。 A hook fixing part (2) having a groove-like recess (21) in which the lower opening is narrow and the upper bottom is widely formed;
A waterstop (1) having a bottomed shape that is open at the top and capable of guiding rainwater or the like, and has thick plate portions formed at both upper ends (11);
A holding member (3) made of an elastic material that can be mounted in the groove-like recess (21) of the heel fixing portion (2) and can hold both upper ends of the waterstop ridge (1). Have
The holding member (3) includes a holding part (31) that holds both upper ends of the waterstop (1) by an elastic force, and an opening / closing arm part that pushes the holding part (31) against the elastic force. (32), and in a state where the open / close arm portion (32) is pushed into the upper bottom side of the groove-shaped recess (21), the clamping portion (31) is narrowed by an elastic force and the waterstop ( 1) can be held at both upper ends, and in a state where the opening and closing arm portion (32) is pulled out in the vicinity of the opening of the groove-shaped recess (21), the holding portion (31) is opened and the holding member is opened. (3) A structure for fixing the waterstop, in which both upper ends of the waterstop (1) can be inserted. 請求項１に記載した止水樋の固定構造であって、
前記止水樋（１）は、全体の断面形状がＵ字形のものである止水樋の固定構造。 It is a fixing structure of a still water basin according to claim 1,
The waterstop (1) is a waterstop fixing structure in which the overall cross-sectional shape is U-shaped. 請求項１，２のいずれか１項に記載した止水樋の固定構造であって、
前記止水樋（１）は、その両上端部（１１）の断面形状が略逆三角形に形成されたものであり、
前記保持部材（３）は、前記止水樋（１）の前記上端部（１１）を保持可能な略逆三角形に形成されたものである止水樋の固定構造。 A fixing structure for a waterstop according to any one of claims 1 and 2,
The waterstop (1) is formed such that the cross-sectional shape of both upper end portions (11) thereof is a substantially inverted triangle,
The holding member (3) is a waterstop fixing structure that is formed in a substantially inverted triangle that can hold the upper end (11) of the waterstop (1). 請求項１〜３のいずれか１項に記載した止水樋の固定構造であって、
前記開閉腕部（３２）は、その先端部に外方側に突出する突起（３３）が形成されたものであり、
前記溝状凹部（２１）は、前記開閉腕部（３２）の前記突起（３３）が係合する係合凹部（２２，２３）が二位置に設けられたものである止水樋の固定構造。 It is a fixed structure of the still water trough as described in any one of Claims 1-3,
The open / close arm (32) is formed with a protrusion (33) protruding outward at the tip thereof,
The groove-shaped recess (21) has a waterstop fixing structure in which engagement recesses (22, 23) with which the protrusions (33) of the opening / closing arm portion (32) are engaged are provided at two positions. .
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