JP2008133591A - Water cut-off device for expansion gap and sheathing board - Google Patents

Water cut-off device for expansion gap and sheathing board Download PDF

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JP2008133591A
JP2008133591A JP2006318349A JP2006318349A JP2008133591A JP 2008133591 A JP2008133591 A JP 2008133591A JP 2006318349 A JP2006318349 A JP 2006318349A JP 2006318349 A JP2006318349 A JP 2006318349A JP 2008133591 A JP2008133591 A JP 2008133591A
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dam plate
plate
dam
flexible
flexible portion
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JP5306590B2 (en
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Yoshihiro Miyagi
佳宏 宮城
Tasuku Kondo
翼 近藤
Takafumi Ishizuka
隆文 石塚
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Nitta Corp
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Nitta Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To increase the efficiency of expansion gap treating work in the construction work of mounting an extending and contracting device in an expansion gap, and to improve the strength for supporting the extending and contracting device. <P>SOLUTION: Anchor bolts 22A (22B) are attached to an anchor 26A (26B) provided on a floor system 25A (25B) in a box removing part 24A (24B) formed in an end part of a bridge girder. Tips of the anchor bolts 22A (22B) project slightly into the expansion gap 20, and the sheathing board 11A (11B) is attached to the tips. The sheathing board 11A (11B) is composed of a sheathing board body 110A (110B) made of a hard material and a flexible part 111A (111B) made of a soft material. The flexible part 111A (111B) is obliquely extended from a lower side part of the sheathing board body 110A (110B). The flexible part 111A (111B) is pressed against a side wall in the end part of the bridge girder 21A (21B) forming the expansion gap 20 and adheres closely to the side wall in the end part where unevenness exists to prevent leakage of concrete when placing concrete. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

本発明は、橋梁同士もしくは橋梁と橋台間の遊間に伸縮装置を設置するための施工に関し、特にこのときに遊間に設置される止水装置、あるいは堰板に関する。   The present invention relates to construction for installing a telescopic device between bridges or between a bridge and an abutment, and more particularly to a water stop device or a dam plate installed between the bridges at this time.

橋桁同士、又は橋桁と橋台の端部間の遊間に簡易鋼製ジョイントやゴムジョイントなどの伸縮装置(伸縮継手)が設けられる場合、遊間を隔てて向かい合う橋桁の床版端部や橋台のパラペット端部は予め箱抜きされており、この箱抜き部に対して伸縮装置を設置した後、箱抜き部に対してコンクリートの打設が行われる。コンクリート打設時には、遊間へのコンクリート洩れを防止するために内型枠が使用される。内型枠としては、遊間に介挿される発泡スチロール等の部材と端部の壁面との間にコンパネを挟み込み固定する方法や、ウレタンフォーム等の伸縮性の部材を遊間に直接詰めて型枠とする方法が知られている。   When expansion devices (expansion joints) such as simple steel joints and rubber joints are provided between the bridge girders or between the bridge girders and the end of the abutment, the floor slab ends of the bridge girders facing each other and the parapet end of the abutment The part is boxed in advance, and after installing the expansion / contraction device on the boxed part, concrete is placed on the boxed part. When casting concrete, an inner mold is used to prevent leakage of concrete into the gap. As the inner mold, a method of sandwiching and fixing a panel between a member such as polystyrene foam inserted between the play and the wall surface of the end, or a stretchable member such as urethane foam is directly packed in the play to form a mold The method is known.

また、ジョイントと箱抜き部の床面との間に堰板を配置して、コンクリートの漏れを防止するとともに、堰板に止水用のゴム製シール板を取り付ける構成も知られている(特許文献1、2)。また、コンクリート漏れ防止の堰板ではないもののジョイントと箱抜き部の床面との間に固定板を配置して止水用の樋部材を取り付ける構成もある(特許文献3)。
特許第3442362号公報 特開平6−41909号公報 特開平5−86604号公報
In addition, a structure is known in which a dam plate is disposed between the joint and the floor surface of the boxing portion to prevent leakage of concrete, and a water sealing rubber seal plate is attached to the dam plate (patent) References 1, 2). Moreover, although it is not a dam plate of concrete leak prevention, there also exists a structure which arrange | positions a fixing plate between the joint and the floor surface of a box extraction part, and attaches the dredging member for water stop (patent document 3).
Japanese Patent No. 3442362 JP-A-6-41909 Japanese Patent Laid-Open No. 5-86604

しかし、遊間を形成する側壁部は、必ずしも平らではなく、例えば側壁部と箱抜き部の床面とが形成する角部は必ずしも直角ではなく、部分的に角が欠けている場合がある。また、壁面自体も波打つなどしているため不陸が存在する。したがって、コンパネを用いる場合、不陸部においてコンパネと側壁部との間に隙間が生じ、流し込まれたコンクリートの押さえが効かず、遊間に漏れ出してしまうという問題がある。また、施工後に遊間が拡張されると、コンパネや発泡スチロールが落下するという問題がある。   However, the side wall part forming the gap is not necessarily flat, for example, the corner part formed by the side wall part and the floor surface of the boxing part is not necessarily a right angle, and the corner may be partially missing. Moreover, since the wall surface itself is wavy, there is unevenness. Therefore, when using the control panel, there is a problem that a gap is generated between the control panel and the side wall portion in the non-land portion, and the poured concrete is not pressed down and leaks in the play. In addition, when the gap is expanded after construction, there is a problem that the control panel or the polystyrene foam falls.

一方ウレタンフォーム等の伸縮性部材を遊間に詰める場合には、不陸に対しては追従することができるが、ウレタンフォームなどの伸縮性部材が箱抜き部にまで入り込んでしまい、本来ジョイントを支持すべきジョイント下部に伸縮性部材が回り込み、コンクリートがジョイント下部に行き渡らず、荷重支持が不十分となり施工不良が発生するという問題がある。また、堰板がジョイントの外側にある場合や2次止水のゴムシートなどの弾性体がジョイント下部にある場合にも、コンクリートによるジョイント下部の支持が不十分となる。   On the other hand, when the elastic members such as urethane foam are packed in the play, it can follow the unevenness, but the elastic members such as urethane foam get into the box opening part and originally support the joint. There is a problem that the elastic member wraps around the lower joint, and the concrete does not reach the lower joint, resulting in insufficient load support and poor construction. In addition, when the dam plate is outside the joint, or when an elastic body such as a rubber sheet for secondary water stop is located at the lower part of the joint, the concrete lower part is not sufficiently supported.

本発明は、遊間に伸縮装置を装着する施工において、遊間処理作業を効率化するとともに、伸縮装置の支持強度の向上を図ることを目的としている。   It is an object of the present invention to increase the efficiency of support processing of the expansion device and to improve the support strength of the expansion device in the construction for installing the expansion device between the spaces.

本発明の堰板は、コンクリート打設に型枠として用いられる堰板であって、コンクリート打設時、平板としての剛性を示す堰板本体と、堰板本体の少なくとも一辺に設けられ、不陸に追従可能な可撓部を備えたことを特徴としている。   The dam plate of the present invention is a dam plate used as a mold for placing concrete, and is provided on at least one side of the dam plate main body and the dam plate main body exhibiting rigidity as a flat plate during concrete pouring. It is characterized by having a flexible part capable of following the above.

例えば堰板本体は硬質素材からなり、可撓部は軟質素材からなる。堰板は、遊間の両側に形成される箱抜き部のコンクリート打設の内型枠として用いられ、可撓部は遊間を形成する側壁面に押し当てられ、側壁面の不陸に追従して側壁面に密接する。可撓部は堰板本体に対して斜めに設けられ、好ましくは堰板本体に対する可撓部の角度は30〜60°である。また、可撓部の先端はテーパ状に形成されることが好ましい。   For example, the main body of the dam plate is made of a hard material, and the flexible part is made of a soft material. The dam plate is used as an inner formwork for placing concrete in the box opening part formed on both sides of the play, and the flexible part is pressed against the side wall surface forming the play space and follows the unevenness of the side wall surface. Close to the side wall surface. The flexible portion is provided obliquely with respect to the dam plate body, and preferably the angle of the flexible portion with respect to the dam plate body is 30 to 60 °. Moreover, it is preferable that the front-end | tip of a flexible part is formed in a taper shape.

堰板は更に、遊間における止水用のシート部材を堰板本体との間に挟み込むための押さえ部と、この押さえ部と堰板本体とを連絡する湾曲部とを備える。湾曲部は例えば軟質部材から形成され、または例えばくびれ部として形成され、撓曲可能である。また、湾曲部は硬質部材もしくは軟質部材から形成され、予め湾曲した形状で成形される。   The dam plate further includes a pressing portion for sandwiching the sheet member for water stop between the gaps between the dam plate body and a curved portion that connects the pressing portion and the dam plate body. The curved portion is formed of, for example, a soft member, or is formed of, for example, a constricted portion and can be bent. Further, the curved portion is formed of a hard member or a soft member, and is molded in a curved shape in advance.

本発明の止水装置は、遊間に取り付けられる止水装置であって、シート部と一対の堰板部と可撓部とを備え、シート部の両長辺端部が堰板部の各々に連結され、シート部と可撓部が軟質素材から構成され、堰板部が硬質素材から構成され、シート部、堰板部、可撓部とが一体的に構成されたことを特徴としている。   The water stop device of the present invention is a water stop device attached between the play and includes a seat portion, a pair of weir plate portions, and a flexible portion, and both long side end portions of the sheet portion are provided in each of the weir plate portions. The sheet portion and the flexible portion are connected to each other, and the dam plate portion is formed from a hard material. The sheet portion, the dam plate portion, and the flexible portion are integrally formed.

可撓部が一対の堰板部の各々の一辺から外側に向けて斜めに延出し、可撓部と堰板部のなす角度は例えば30〜60°である。またシート部と可撓部は同一素材から一体的に成形されることが好ましい。   The flexible portion extends obliquely outward from one side of each of the pair of dam plates, and the angle formed by the flexible portion and the dam plates is, for example, 30 to 60 °. Moreover, it is preferable that a sheet | seat part and a flexible part are integrally shape | molded from the same raw material.

以上のように、本発明によれば、遊間に伸縮装置を装着する施工において、遊間処理作業を効率化するとともに、伸縮装置の支持強度の向上を得ることができる。   As described above, according to the present invention, it is possible to improve the efficiency of the gap processing work and to improve the support strength of the expansion / contraction apparatus in the construction for installing the expansion / contraction apparatus between the gaps.

以下、本発明の実施の形態を、図面を参照して説明する。
図1は、橋梁間あるいは橋梁と橋台間の遊間に設置される第1実施形態の堰板と止水装置の一部を示す斜視図である。また、図2は、図1に示される堰板と止水装置の側面図であり、図3は、図1、2に示された堰板と止水装置を簡易鋼製ジョイントとともに、遊間に設置した状態(コンクリート打設前の状態)を側断面図として示す。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a part of a weir plate and a water stop device according to a first embodiment installed between bridges or between a bridge and an abutment. 2 is a side view of the dam plate and the water stop device shown in FIG. 1. FIG. 3 is a side view of the dam plate and the water stop device shown in FIGS. The installed state (state before placing concrete) is shown as a side sectional view.

本実施形態において、止水装置10はゴムシート(シート部材)からなり(以下止水ゴムと呼ぶ)、止水ゴム10は、遊間20において、橋桁21A、21Bの幅員方向に延在し、橋桁21A、21Bの間の遊間20からの水漏れを防止する。止水ゴム10は、長尺のゴムシートをU字形に幅方向に撓曲したものであり、その両長辺端10A、10Bは、それぞれ堰板11A、11Bに取り付けられる。   In the present embodiment, the water stop device 10 is made of a rubber sheet (sheet member) (hereinafter referred to as a water stop rubber), and the water stop rubber 10 extends in the width direction of the bridge girders 21A and 21B in the gap 20 and bridge girder. Water leakage from the gap 20 between 21A and 21B is prevented. The waterstop rubber 10 is a long rubber sheet bent into a U shape in the width direction, and both long side edges 10A and 10B are attached to the weir plates 11A and 11B, respectively.

堰板11A、11Bは、橋桁21A、21Bの幅員に方向に延在し、幅員方向に所定の間隔で複数の取付穴が設けられる。取付穴には、橋桁21A、21Bの幅員方向に所定の間隔で配置されるアンカーボルト22A、22Bがそれぞれ挿通される。また、アンカーボルト22A、22Bには、アンカーボルト22A、22Bに対応して取付穴が形成された止水ゴム10の長辺端10A、10Bが取り付けられる。アンカーボルト22A、22Bには更に、橋桁21A、21Bの幅員に沿って延在する押さえ板23A、23Bが取り付けられる。なお、押さえ板23A、23Bには、堰板11A、11Bと同様に、アンカーボルト22A、22Bに対応した取付穴が形成される。   The dam plates 11A and 11B extend in the direction toward the width of the bridge beams 21A and 21B, and a plurality of mounting holes are provided at predetermined intervals in the width direction. Anchor bolts 22A and 22B arranged at predetermined intervals in the width direction of the bridge beams 21A and 21B are inserted into the mounting holes, respectively. Further, the anchor bolts 22A and 22B are attached with the long side ends 10A and 10B of the water blocking rubber 10 in which attachment holes are formed corresponding to the anchor bolts 22A and 22B. Further, holding plates 23A, 23B extending along the width of the bridge beams 21A, 21B are attached to the anchor bolts 22A, 22B. In addition, attachment holes corresponding to the anchor bolts 22A and 22B are formed in the holding plates 23A and 23B, similarly to the barrier plates 11A and 11B.

すなわち、各アンカーボルト22A、22Bには、ナット220が装着された後、堰板11A(11B)、止水ゴム10の端部10A(10B)、押さえ板23A(23B)の順でそれぞれが装着され、最後にナット221により各部材がナット220、221の間に挟まれて固定される。なお、堰板11A(11B)、止水ゴム10の端部10A(10B)、押さえ板23A(23B)の位置は、ナット220の位置により調整可能である。   That is, after the nut 220 is attached to each anchor bolt 22A, 22B, the barrier plate 11A (11B), the end portion 10A (10B) of the water blocking rubber 10 and the presser plate 23A (23B) are attached in this order. Finally, each member is sandwiched and fixed between the nuts 220 and 221 by the nut 221. The positions of the barrier plate 11A (11B), the end portion 10A (10B) of the water blocking rubber 10 and the pressing plate 23A (23B) can be adjusted by the position of the nut 220.

各アンカーボルト22A、22Bは、橋桁21A、21Bの床版端部に形成された箱抜き部24A、24Bの床面25A、25Bに埋設されたアンカー26A、26Bに溶接され固定される。アンカーボルト22A、22Bは、橋桁の軸に沿って配置され、それぞれ遊間20に向けて僅かに延出する。   The anchor bolts 22A and 22B are welded and fixed to anchors 26A and 26B embedded in the floor surfaces 25A and 25B of the box opening portions 24A and 24B formed at the end portions of the floor slabs of the bridge girders 21A and 21B. The anchor bolts 22 </ b> A and 22 </ b> B are arranged along the axis of the bridge beam and extend slightly toward the gap 20.

また、アンカー26A、26Bの上方には、例えば一対のフィンガープレート30A、30Bからなる簡易鋼製ジョイント30が取り付けられ、止水ゴム10の上には、例えば遊間を埋めるウレタンフォーム27が充填される。   Further, a simple steel joint 30 made of, for example, a pair of finger plates 30A, 30B is attached above the anchors 26A, 26B, and a urethane foam 27 filling, for example, a gap is filled on the water stop rubber 10. .

なお、本実施形態では、アンカーボルト22A(22B)に、2つのナット220、221を用い、ナット220、221間に堰板11A(11B)、止水ゴム10、および押さえ板23A(23B)を挟むことにより、各部材をアンカーボルト22A、22Bに取り付けたが、例えばナット221をアンカーボルト22A(22B)のボルトヘッドに置き換え、ボルトヘッドとナット220の間に各部材を固定してもよい。この場合、図2のように各部材がアンカーボルト22A、22Bに組み付けられた後、アンカーボルト22A、22Bが床面25A、25Bに埋設されたアンカー26A、26Bに溶接などの手段を用いて取り付けられる。   In the present embodiment, two nuts 220 and 221 are used for the anchor bolt 22A (22B), and the weir plate 11A (11B), the water blocking rubber 10 and the pressing plate 23A (23B) are interposed between the nuts 220 and 221. Each member is attached to the anchor bolts 22 </ b> A and 22 </ b> B by pinching. However, for example, the nut 221 may be replaced with the bolt head of the anchor bolt 22 </ b> A (22 </ b> B) and each member may be fixed between the bolt head and the nut 220. In this case, as shown in FIG. 2, after the members are assembled to the anchor bolts 22A and 22B, the anchor bolts 22A and 22B are attached to the anchors 26A and 26B embedded in the floor surfaces 25A and 25B by means such as welding. It is done.

図1〜図3に示されるように、堰板11A(11B)は、堰板本体110A(110B)と可撓部111A(111B)を備える。堰板本体110A(110B)は例えば板状の一定の剛性を備えた部材からなり、コンクリート打設時に変形することなくコンクリートの流出を防止する。堰板本体110A(110B)には例えば硬質素材が用いられる。硬質素材としては、例えば鋼板(SUSやSS、SUP等)や硬質ゴム(JISK6253における硬度A70以上のCRやEPT等)、硬質樹脂(硬質塩化ビニルやPP等)が挙げられる。一方、可撓部111A(111B)は、不陸などの凹凸に追従・密着可能な可撓性を備えた板部材からなる。可撓部111A(111B)には、例えば軟質素材が用いられる。なお、軟質素材としては、例えば軟質ゴム(硬度A70以下のCRやEPT等)や軟質樹脂(軟質塩化ビニルやTPO等)が挙げられる。また。可撓部111A(111B)には薄鋼板(SUSやSUP等)などを用いることもできる。   As shown in FIGS. 1 to 3, the dam plate 11A (11B) includes a dam plate body 110A (110B) and a flexible portion 111A (111B). The dam plate body 110A (110B) is made of, for example, a plate-like member having a certain rigidity, and prevents the concrete from flowing out without being deformed when the concrete is placed. For example, a hard material is used for the weir plate body 110A (110B). Examples of the hard material include steel plates (SUS, SS, SUP, etc.), hard rubber (CR, EPT, etc. having a hardness A70 or higher in JISK6253), and hard resins (hard vinyl chloride, PP, etc.). On the other hand, the flexible portion 111A (111B) is made of a flexible plate member that can follow and adhere to unevenness such as unevenness. For example, a soft material is used for the flexible portion 111A (111B). Examples of the soft material include soft rubber (such as CR and EPT having a hardness of A70 or less) and soft resin (such as soft vinyl chloride and TPO). Also. A thin steel plate (SUS, SUP, etc.) can also be used for the flexible portion 111A (111B).

可撓部111A(111B)は、堰板11A(11B)の長手方向に沿って堰板本体110A(110B)の下側に設けられた部材であり、例えば堰板本体110A(110B)の下辺端部から延出し、その先端は例えばテーパ状に成形される。また、可撓部111A(111B)は堰板本体110A(110B)に斜めに取り付けられ、堰板11A(11B)の側断面は「へ」の字形をなす。図2に示されるように、可撓部111A(111B)の、堰板本体110A(110B)の面に対する傾き角をθとすると、θは0〜90°の範囲で設定され、好ましくは30〜60°に設定される。なお、堰板11A、11Bは、遊間20において可撓部111A、111Bが外側に向けて張り出して「ハ」の字を形成するように配置される。   The flexible portion 111A (111B) is a member provided below the dam plate body 110A (110B) along the longitudinal direction of the dam plate 11A (11B). For example, the lower end of the dam plate body 110A (110B) It extends from the part, and its tip is formed into a tapered shape, for example. Further, the flexible portion 111A (111B) is attached to the dam plate body 110A (110B) at an angle, and the side cross section of the dam plate 11A (11B) has a “he” shape. As shown in FIG. 2, when the inclination angle of the flexible portion 111A (111B) with respect to the surface of the main body 110A (110B) is θ, θ is set in the range of 0 to 90 °, preferably 30 to 60 ° is set. The dam plates 11A and 11B are arranged so that the flexible portions 111A and 111B project outward in the clearance 20 to form a “C” shape.

なお、堰板11A(11B)や止水ゴム10は、例えば幅員方向にジョイント毎の長さを単位として構成されたものでもよいが、全幅員に渡って一体的でもよく、その単位は任意である。   The barrier plate 11A (11B) and the waterstop rubber 10 may be configured with the length of each joint as a unit in the width direction, for example, but may be integrated over the entire width, and the unit is arbitrary. is there.

図4は、本実施形態の止水ゴム10と堰板11A、11Bを、波形の鋼板を用いた鋼製縦型ジョイント40と組み合わせた例を示すものである。この場合も、止水ゴム10と堰板11A、11Bの取り付に関わる構成は図3に示される例と同様である。また、図5に本実施形態の止水ゴム10と堰板11A、11Bとゴムジョイント70を組み合わせた例を示す。なお、図5の例では、箱抜き部へのコンクリート打設が終了し、ゴムジョイント70が取り付けられた状態が示される。床面25A、25Bには、堰板11A、11Bのためのアンカーボルト22A、22Bが固定されるアンカー26A、26Bの他に、アンカー26C、26Dがそれぞれ埋設されており、アンカー26C、26Dにはゴムジョイント70を取り付けるためのアンカーボルト71A、71Bが固定される。   FIG. 4 shows an example in which the still water rubber 10 and the weir plates 11A and 11B of this embodiment are combined with a steel vertical joint 40 using a corrugated steel plate. Also in this case, the configuration relating to the attachment of the water blocking rubber 10 and the weir plates 11A and 11B is the same as the example shown in FIG. Moreover, the example which combined the still water rubber 10, the dam boards 11A and 11B, and the rubber joint 70 of this embodiment is shown in FIG. In the example of FIG. 5, a state in which the concrete placement to the box opening portion is finished and the rubber joint 70 is attached is shown. In addition to the anchors 26A and 26B to which the anchor bolts 22A and 22B for the dam plates 11A and 11B are fixed, anchors 26C and 26D are respectively embedded in the floor surfaces 25A and 25B. Anchor bolts 71A and 71B for attaching the rubber joint 70 are fixed.

なお、本実施形態の止水ゴム10、堰板11A、11Bと伸縮装置(ジョイント)との組み合わせは、本実施形態に限らず、あらゆる伸縮装置との組み合わせが可能である。   In addition, the combination of the water stop rubber 10, the dam plates 11A and 11B and the expansion / contraction device (joint) of the present embodiment is not limited to the present embodiment, and combinations with any expansion / contraction device are possible.

次に、図6を参照して、本実施形態における堰板11A(11B)の機能について説明する。図6は、堰板11Aと橋桁21Aとの関係を拡大して示す側断面図であるが、堰板11Bと橋桁21Bについても同様であるので、ここでは、堰板11Aと橋桁21Aの関係についてのみ説明する。   Next, with reference to FIG. 6, the function of the weir plate 11A (11B) in this embodiment is demonstrated. FIG. 6 is an enlarged side sectional view showing the relationship between the dam plate 11A and the bridge girder 21A. However, since the same applies to the dam plate 11B and the bridge girder 21B, the relationship between the dam plate 11A and the bridge girder 21A is shown here. Only explained.

一般に、橋桁21Aの端部側壁210には不陸が存在する。図6においては、端部側壁210に存在する不陸が実線と破線とで模式的に示される。すなわち、図6においては、端部側壁210において、面の高さが異なる2つの位置に対応する断面が、一方は実線で、他方は破線で描かれている。   Generally, unevenness exists in the end side wall 210 of the bridge girder 21A. In FIG. 6, the unevenness which exists in the edge part side wall 210 is typically shown with a continuous line and a broken line. That is, in FIG. 6, in the end side wall 210, cross sections corresponding to two positions having different surface heights are drawn with one solid line and the other with a broken line.

可撓部111Aは、端部側壁210に向けて張り出しているため、その先端は端部側壁210に押し当てられる。このとき、可撓部111Aは軟質素材から形成されるので、端部側壁210の面の高さに追従して変形し、端部側壁210の形状に合わせて端部側壁210の各位置で側壁面にぴったりと密接する。すなわち、実線で描かれる端部側壁210の位置では、可撓部111Aは斜線が施されて表されるように側壁面に当接し、破線で描かれる端部側壁210の位置に対しては、破線で描かれるように側壁面に当接する。   Since the flexible portion 111 </ b> A projects toward the end side wall 210, the tip thereof is pressed against the end side wall 210. At this time, since the flexible portion 111A is formed of a soft material, the flexible portion 111A is deformed following the height of the surface of the end side wall 210, and is changed to the side of each end side wall 210 according to the shape of the end side wall 210. Closely close to the wall. That is, at the position of the end side wall 210 drawn by a solid line, the flexible part 111A abuts on the side wall surface as shown by being shaded, and for the position of the end side wall 210 drawn by a broken line, It abuts on the side wall surface as depicted by the broken line.

以上のように、コンクリート打設時において、形状(例えば平板としての形状)を維持するのに十分な剛性を備える堰板本体から、不陸に追従して変形可能な可撓性を備える可撓部を斜めに延出させ、堰板の断面を「へ」の字形に形成することにより、可撓部が遊間を形成する側壁端部面の不陸に追従して、壁面にぴったりと密接するため、箱抜き部へのコンクリート打設時にコンクリートが不陸を介して洩れ出すことがない。すなわち、本実施形態の堰板によれば遊間の不陸に対しても追従できる内型枠を提供できる。特に本実施形態では、可撓部の先端がテーパ状とされているため、不陸への可撓部の適応性は更に向上される。   As described above, when placing concrete, the flexible body having flexibility that can be deformed by following the unevenness from the main body having sufficient rigidity to maintain the shape (for example, the shape as a flat plate). By extending the section diagonally and forming the cross section of the weir plate in the shape of a “he”, the flexible part follows the unevenness of the end face of the side wall forming a gap and closely contacts the wall surface For this reason, the concrete does not leak through the uneven land when the concrete is placed in the box opening portion. That is, according to the weir plate of the present embodiment, it is possible to provide an inner mold that can follow the unevenness between the play. In particular, in this embodiment, since the tip of the flexible part is tapered, the adaptability of the flexible part to unevenness is further improved.

また、本実施形態の堰板を用いた場合、堰板を箱抜き部内に配置する必要がないので、伸縮装置を支持する位置に十分にコンクリートを打設することができるので、伸縮装置の支持強度の向上を図ることができる。また、堰板の素材に劣化に強いものを用いることにより、埋め殺しとすることができるので、伸縮装置の下側コンクリートは、堰板が取り付けられたアンカーにより補強されることとなり、強度をより高めることができる。   Further, when the dam plate of the present embodiment is used, it is not necessary to place the dam plate in the box opening part, so that the concrete can be sufficiently placed at the position where the expansion device is supported. The strength can be improved. In addition, by using a material that is resistant to deterioration as the material of the dam plate, it can be buried, so the lower concrete of the expansion and contraction device will be reinforced by the anchor to which the dam plate is attached. Can be increased.

なお、第1実施形態の堰板は2次止水用の止水ゴムとともに用いられたが、単独で用いることも可能である。この場合、堰板はアンカーボルトに溶接により固定されてもよい。   In addition, although the weir board of 1st Embodiment was used with the water stop rubber for secondary water stop, it can also be used independently. In this case, the barrier plate may be fixed to the anchor bolt by welding.

次に、図7、8を参照して、本発明の第2実施形態について説明する。図7は、止水ゴムと第2実施形態の堰板がアンカーボルトに取り付けられた状態を示す側面図であり、図8は第2実施形態の堰板の側断面図である。なお、第1実施形態と同様の構成については同一参照符号を用いその説明を省略する。   Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a side view showing a state where the waterproof rubber and the dam plate of the second embodiment are attached to the anchor bolt, and FIG. 8 is a side sectional view of the dam plate of the second embodiment. In addition, about the structure similar to 1st Embodiment, the description is abbreviate | omitted using the same referential mark.

図7、図8に示されるように、第2実施形態の堰板50A(50B)は、堰板本体110A(110B)と可撓部111A(111B)の他に、押さえ部112A(112B)と湾曲部113A(113B)を備える。湾曲部113A(113B)は、堰板本体110A(110B)と押さえ部112A(112B)とを連絡する部材であり、例えば、可撓部111A(111B)と同様に軟質素材からなり、その素材としては、可撓部111A(111B)と同様の素材を用いることができる。一方、押さえ部112A(112B)の素材は限定されるものではないが、例えば硬質素材からなり、堰板本体110A(110B)と同様の素材を用いることができる。   As shown in FIGS. 7 and 8, the dam plate 50A (50B) of the second embodiment includes a pressing portion 112A (112B) in addition to the dam plate body 110A (110B) and the flexible portion 111A (111B). A curved portion 113A (113B) is provided. The curved portion 113A (113B) is a member that connects the dam plate body 110A (110B) and the holding portion 112A (112B). For example, the curved portion 113A (113B) is made of a soft material similar to the flexible portion 111A (111B). Can use the same material as the flexible part 111A (111B). On the other hand, the material of the holding portion 112A (112B) is not limited, but it is made of, for example, a hard material, and the same material as the dam plate main body 110A (110B) can be used.

図7に示されるように、アンカーボルト22A(22B)への装着時、堰板50A(50B)の湾曲部113A(113B)は折り曲げられ、堰板本体110A(110B)と押さえ部112A(112B)の間に止水ゴム10の長辺端部10A(10B)が挟み込まれる。すなわち、押さえ部112A(112B)においても、アンカーボルト22A(22B)に挿通するための取付穴が設けられており、各アンカーボルト22A(22B)には、ナット220が装着された後、堰板11A(11B)、止水ゴム10の長辺端部10A(10B)、押さえ部112A(112B)の順でそれぞれが装着され、最後にナット221により各部材がナット220、221の間に挟まれて固定される。したがって、押さえ部112A(112B)は、第1実施形態における押さえ板23A(23B)の役割を果たすとともに、止水ゴム10の長辺端部10A(10B)の上部は、湾曲部113A(113B)によって覆われる。   As shown in FIG. 7, when the anchor bolt 22A (22B) is mounted, the curved portion 113A (113B) of the barrier plate 50A (50B) is bent, and the barrier plate main body 110A (110B) and the holding portion 112A (112B). 10A (10B) of the long side of the water-stopping rubber 10 is sandwiched therebetween. In other words, the holding portion 112A (112B) is also provided with a mounting hole for passing through the anchor bolt 22A (22B). After each nut 22 is attached to each anchor bolt 22A (22B), the weir plate 11A (11B), the long side end portion 10A (10B) of the water blocking rubber 10, and the holding portion 112A (112B) are mounted in this order, and finally each member is sandwiched between the nuts 220 and 221 by the nut 221. Fixed. Accordingly, the holding portion 112A (112B) plays the role of the holding plate 23A (23B) in the first embodiment, and the upper portion of the long side end portion 10A (10B) of the water blocking rubber 10 is a curved portion 113A (113B). Covered by.

以上により、第2実施形態の堰板によれば、第1実施形態と同様の効果が得られるとともに、止水ゴムの長辺端部の上部が湾曲部により覆われるため、止水ゴムと堰板本体や押さえ板との間からの水が漏れを確実に防止できる。また、押さえ板と堰板が一体化されるため、部品点数を削減することができ、取付効率も向上する。   As described above, according to the dam plate of the second embodiment, the same effect as that of the first embodiment can be obtained, and the upper part of the long-side end portion of the water-stopping rubber is covered with the curved portion. Water from between the plate body and the holding plate can be surely prevented from leaking. Moreover, since the pressing plate and the barrier plate are integrated, the number of parts can be reduced and the mounting efficiency is also improved.

図9に第2実施形態の第1変形例を示す。第2実施形態では、湾曲部に軟質素材の部材を用いたが、本変形例の堰板60B(60A)では、湾曲部114B(114A)をくびれ部として構成している。すなわち、本変形例においては、湾曲部114B(114A)を薄く形成することにより、その可撓性を高め、装着時に湾曲可能としている。したがって、第1変形例では、第2実施形態と同様の効果が得られるとともに、堰板本体、湾曲部、押さえ部を例えば同一素材から構成することができるので、製造コストを低く抑えることが可能となる。   FIG. 9 shows a first modification of the second embodiment. In the second embodiment, a member made of a soft material is used for the curved portion. However, in the weir plate 60B (60A) of this modification, the curved portion 114B (114A) is configured as a constricted portion. In other words, in this modification, the bending portion 114B (114A) is formed thin to increase its flexibility and bendable when worn. Therefore, in the first modified example, the same effects as those of the second embodiment can be obtained, and the weir plate body, the curved portion, and the pressing portion can be made of, for example, the same material, so that the manufacturing cost can be kept low. It becomes.

また図10に第2実施形態の第2変形例を示す。第2変形例では、堰板本体80B(A)、湾曲部115B(115A)、押さえ部112B(112A)が一体的に同一素材から形成され、湾曲部115B(115A)は、初めから湾曲した形状で成形される。なお、湾曲の程度は、堰板本体80B(A)と押さえ部112B(112A)との隙間が止水ゴムの厚さに適合するように設定される。第2変形例の構成によれば、第1変形例と同様の効果を得られるとともに、湾曲部が予め湾曲されているため、組立時に湾曲部を湾曲させる必要がなく、組立作業の効率を高めることができる。   FIG. 10 shows a second modification of the second embodiment. In the second modification, the dam plate main body 80B (A), the bending portion 115B (115A), and the holding portion 112B (112A) are integrally formed from the same material, and the bending portion 115B (115A) has a curved shape from the beginning. Molded with. The degree of bending is set so that the gap between the weir plate main body 80B (A) and the pressing portion 112B (112A) matches the thickness of the waterproof rubber. According to the configuration of the second modified example, the same effect as that of the first modified example can be obtained, and since the curved portion is curved in advance, it is not necessary to bend the curved portion at the time of assembly, and the efficiency of the assembly work is increased. be able to.

なお、第1、第2実施形態、およびその変形例では、可撓部は軟質素材から構成され、堰板本体や押さえ部などは硬質素材から構成されたが、堰板全体を同一素材から構成し、その厚さや形状を調整することにより、堰板本体や押さえ部に剛性を与え、可撓部に可撓性を与えることも可能である。すなわち、堰板本体をコンクリート打設時に堰板(平板)として十分に機能する程度の剛性を示す厚さまたは形状とし、軟質部を不陸に追従・密接するのに十分な可撓性を示す厚さまたは形状とすることも可能である。   In the first and second embodiments and the modifications thereof, the flexible portion is made of a soft material, and the dam plate body and the holding portion are made of a hard material, but the entire dam plate is made of the same material. And by adjusting the thickness and shape, it is also possible to give rigidity to the barrier plate body and the pressing part and to give flexibility to the flexible part. That is, the thickness of the dam plate body is set to a thickness or shape that is sufficient to function as a dam plate (flat plate) when placing concrete, and the flexible portion is flexible enough to follow and closely contact the uneven surface. It can also be of thickness or shape.

同一樹脂素材を用いて堰板を構成し、厚さを調整して剛性や可撓性を与える場合、押さえ部は例えば厚さ1mm以上の板部材とされ、好ましくは厚さ3mm以上の板部材とされ、堰板本体は例えば厚さ2mm以上、好ましくは6mm以上とされ、可撓部は例えば厚さ3mm以上、好ましくは6mm以上とされる。このとき、可撓部はその断面がテーパ状とされることが好ましい。また、可撓部の断面形状がテーパ状とされない場合(例えば均一の厚みとされる場合)には、堰板本体の厚みが可撓部の厚さの1.5倍以上とされることが望ましい。   When the same resin material is used to form the weir plate and the thickness is adjusted to give rigidity or flexibility, the pressing portion is, for example, a plate member having a thickness of 1 mm or more, preferably a plate member having a thickness of 3 mm or more. The dam plate body has a thickness of 2 mm or more, preferably 6 mm or more, and the flexible portion has a thickness of 3 mm or more, preferably 6 mm or more. At this time, it is preferable that the cross section of the flexible portion is tapered. Moreover, when the cross-sectional shape of the flexible portion is not tapered (for example, when the thickness is uniform), the thickness of the dam plate body may be 1.5 times or more the thickness of the flexible portion. desirable.

また、同一金属材料(例えばSUP等のバネ鋼)を用いて堰板を構成する場合には、堰板本体および可撓部の厚さは例えば厚さ1mm以下とされる。バネ鋼などの金属材料を用いる場合には、可撓部は例えば厚さ均一の板部材とされる。   Further, when the dam plate is formed using the same metal material (for example, spring steel such as SUP), the thickness of the dam plate body and the flexible portion is, for example, 1 mm or less. When a metal material such as spring steel is used, the flexible portion is, for example, a plate member having a uniform thickness.

次に図11を参照して、本発明の第3実施形態について説明する。第1および第2実施形態では、堰板と、止水装置である止水ゴムは別体として構成されたが、第3実施形態は、これらを一体成型したものである。なお、第1および第2実施形態と同様の構成については、同一参照符号を用いるとともにその説明を省略する。   Next, a third embodiment of the present invention will be described with reference to FIG. In the first and second embodiments, the dam plate and the water stop rubber as the water stop device are configured as separate bodies, but the third embodiment is formed by integrally molding them. In addition, about the structure similar to 1st and 2nd embodiment, while using the same referential mark, the description is abbreviate | omitted.

図11は、第3実施形態の堰板一体型止水装置60の側面図であり、図に示されるように、U字形とされた止水ゴム61には可撓部61A、61Bが一体的に設けられる。U字形の止水ゴム61の両端の側壁面には、硬質素材からなる堰板62A、62Bが貼着される。すなわち、止水ゴム61、可撓部61A、61B、堰板62A、62Bは一体的に形成される。なお、止水ゴム61と可撓部61A、61Bは例えば同一素材から形成される。   FIG. 11 is a side view of the weir plate integrated water stop device 60 of the third embodiment. As shown in the figure, flexible portions 61A and 61B are integrated with a U-shaped water stop rubber 61. As shown in FIG. Is provided. Weir plates 62A and 62B made of a hard material are attached to the side wall surfaces at both ends of the U-shaped waterstop rubber 61. That is, the water stop rubber 61, the flexible portions 61A and 61B, and the weir plates 62A and 62B are integrally formed. The water stop rubber 61 and the flexible portions 61A and 61B are made of the same material, for example.

また可撓部61A、61Bは、堰板62A、62Bの下辺部から外側に向けて延出し、その先端部はテーパ状に形成される。堰板62A、62Bと可撓部61A、61Bのなす角は第1および第2実施形態と同様に0〜90°であり、好ましくは30〜60°である。なお、本実施形態では、堰板62A、62Bは鋼製であり、アンカーボルト22A、22Bにそれぞれ溶接により固定されるが、第1、第2実施形態と同様にボルトによる固定であってもよく、この場合堰板62A、62Bはゴムや樹脂などからなる硬質板であってもよい。   The flexible portions 61A and 61B extend outward from the lower side portions of the barrier plates 62A and 62B, and the tip portions thereof are formed in a tapered shape. The angle formed by the weir plates 62A and 62B and the flexible portions 61A and 61B is 0 to 90 °, preferably 30 to 60 °, as in the first and second embodiments. In this embodiment, the dam plates 62A and 62B are made of steel and fixed to the anchor bolts 22A and 22B by welding, respectively, but may be fixed by bolts as in the first and second embodiments. In this case, the weir plates 62A and 62B may be hard plates made of rubber or resin.

次に図12に第3実施形態の変形例を示す。図12の変形例における堰板一体型止水装置63では、止水ゴム64は逆U字形に成型され、可撓部64A、64Bは逆U字の長辺端部の先端から「ハ」の字状に外側に延出する。また、堰板62A、62Bとの貼着を行う貼着部65A、65Bが逆U字形のゴムシートの両側に設けられる。なおその他の構成は第3実施形態と同様である。   Next, FIG. 12 shows a modification of the third embodiment. In the weir plate integrated water stop device 63 in the modified example of FIG. 12, the water stop rubber 64 is molded into an inverted U shape, and the flexible portions 64A and 64B are Extend outward in a letter shape. Adhering portions 65A and 65B for adhering to the barrier plates 62A and 62B are provided on both sides of the inverted U-shaped rubber sheet. Other configurations are the same as those of the third embodiment.

以上のように、第3実施形態およびその変形例によれば、第1実施形態と同様の効果が得られるとともに、止水装置と堰板が一体化されているため、押さえ板を設ける必要がなくなり、部品点数を少なくすることができる。また施工の効率も向上される。   As described above, according to the third embodiment and the modification thereof, the same effect as that of the first embodiment can be obtained, and the water stop device and the dam plate are integrated, and thus it is necessary to provide a pressing plate. The number of parts can be reduced. Also, the construction efficiency is improved.

なお、本実施形態では、可撓部が堰板の一辺に設けられたが、可撓部を堰板の複数の辺に設けることも可能である。   In the present embodiment, the flexible portion is provided on one side of the dam plate, but the flexible portion may be provided on a plurality of sides of the dam plate.

橋梁間あるいは橋梁と橋台間の遊間に設置される第1実施形態の堰板と止水装置の一部を示す斜視図である。It is a perspective view which shows a part of weir board and water stop apparatus of 1st Embodiment installed between bridge | bridges or between the bridge | bridge and an abutment. 図1に示される堰板と止水装置の側面図である。It is a side view of the dam plate and water stop apparatus which are shown by FIG. 図1、2に示された堰板と止水装置を簡易鋼製ジョイントとともに、遊間に設置した状態(コンクリート打設前の状態)を示す側断面図である。It is a sectional side view which shows the state (state before concrete placement) which installed the weir board and the water stop apparatus shown by FIG. 第1実施形態の止水ゴムと堰板を、波形の鋼板を用いた鋼製縦型ジョイントと組み合わせたときの側断面図である。It is a sectional side view when the water stop rubber and dam plate of 1st Embodiment are combined with the steel vertical joint using a corrugated steel plate. 第1実施形態の止水ゴムと堰板を、ゴムジョイントと組み合わせたときの側断面図である(コンクリート打設後の状態)。It is a sectional side view when the water-stopping rubber and barrier plate of 1st Embodiment are combined with the rubber joint (state after concrete placement). 堰板と橋桁との関係を拡大して示す側断面図である。It is a sectional side view which expands and shows the relationship between a weir board and a bridge girder. 第2実施形態の堰板が止水ゴムとともにアンカーボルトに取り付けられた状態を示す側面図である。It is a side view which shows the state in which the weir board of 2nd Embodiment was attached to the anchor bolt with the water stop rubber. 第2実施形態の堰板の側断面図である。It is a sectional side view of the dam plate of 2nd Embodiment. 第2実施形態の第1変形例の堰板の側断面図である。It is a sectional side view of the dam plate of the 1st modification of 2nd Embodiment. 第2実施形態の第2変形例の堰板の側断面図である。It is a sectional side view of the dam plate of the 2nd modification of 2nd Embodiment. 第3実施形態の堰板一体型止水装置の側面図である。It is a side view of the weir board integrated water stop apparatus of 3rd Embodiment. 第3実施形態の変形例の堰板一体型止水装置の側面図である。It is a side view of the weir board integrated water stop device of the modification of 3rd Embodiment.

符号の説明Explanation of symbols

10、61、64 止水ゴム
11A、11B 堰板
23A、23B 押さえ板
30 簡易鋼製ジョイント
40 鋼製縦型ジョイント
60、63堰板一体型止水装置
61A、61B 可撓部
62A、62B 堰板
64A、64B 可撓部
70 ゴムジョイント
80A、80B 堰板
110A、110B 堰板本体
111A、111B 可撓部
112A、112B 押さえ部
113A、113B 湾曲部
114A、114B 湾曲部(くびれ部)
115A、115B 湾曲部
10, 61, 64 Water stop rubber 11A, 11B Weir plate 23A, 23B Holding plate 30 Simple steel joint 40 Steel vertical joint 60, 63 Water stop integrated device 61A, 61B Flexible portion 62A, 62B Weir plate 64A, 64B Flexible portion 70 Rubber joint 80A, 80B Dam plate 110A, 110B Dam plate body 111A, 111B Flexible portion 112A, 112B Holding portion 113A, 113B Curved portion 114A, 114B Curved portion (constricted portion)
115A, 115B curved portion

Claims (14)

コンクリート打設に型枠として用いられる堰板であって、コンクリート打設時、平板としての剛性を示す堰板本体と、前記堰板本体の少なくとも一辺に設けられ、不陸に追従可能な可撓部とを備えることを特徴とする堰板。   A dam plate used as a formwork for casting concrete, and a dam plate main body that exhibits rigidity as a flat plate during concrete pouring, and is provided on at least one side of the dam plate main body and is flexible enough to follow unevenness A dam plate comprising a portion. 前記堰板本体が硬質素材からなり、前記可撓部が軟質素材からなることを特徴とする請求項1に記載の堰板。   The dam plate according to claim 1, wherein the dam plate body is made of a hard material, and the flexible portion is made of a soft material. 前記堰板は、遊間の両側に形成される箱抜き部のコンクリート打設の内型枠として用いられ、前記可撓部は前記遊間を形成する側壁面に押し当てられ、前記側壁面の不陸に追従して前記側壁面に密接することを特徴とする請求項1に記載の堰板。   The barrier plate is used as an inner mold for placing concrete in a box opening portion formed on both sides of the play, the flexible portion is pressed against the side wall surface forming the play space, and the side wall surface is uneven. The dam plate according to claim 1, wherein the dam plate closely contacts the side wall surface. 前記可撓部が前記堰板本体に対して斜めに設けられることを特徴とする請求項1に記載の堰板。   The dam plate according to claim 1, wherein the flexible portion is provided obliquely with respect to the dam plate body. 前記堰板本体に対する前記可撓部の角度が30〜60°であることを特徴とする請求項3に記載の堰板。   The dam plate according to claim 3, wherein an angle of the flexible portion with respect to the dam plate body is 30 to 60 °. 前記可撓部の先端がテーパ状に形成されることを特徴とする請求項1に記載の堰板。   The dam plate according to claim 1, wherein a tip of the flexible portion is formed in a tapered shape. 前記堰板が更に、遊間における止水用のシート部材を前記堰板本体との間に挟み込むための押さえ部と、前記押さえ部と前記堰板本体とを連絡する湾曲部とを備えることを特徴とする請求項1に記載の堰板。   The barrier plate further includes a pressing portion for sandwiching a sheet member for water stoppage between the gap and the barrier plate main body, and a curved portion that connects the pressing portion and the barrier plate main body. The dam plate according to claim 1. 前記湾曲部が軟質部材から形成され、撓曲可能であることを特徴とする請求項7に記載の堰板。   The dam plate according to claim 7, wherein the curved portion is formed of a soft member and can be bent. 前記湾曲部がくびれ部として形成され、撓曲可能であることを特徴とする請求項7に記載の堰板。   The dam plate according to claim 7, wherein the curved portion is formed as a constricted portion and can be bent. 前記湾曲部が硬質部材もしくは軟質部材から形成され、予め湾曲した形状で成型されることを特徴とする請求項7に記載の堰板。   The dam plate according to claim 7, wherein the curved portion is formed of a hard member or a soft member and is molded in a curved shape in advance. 遊間に取り付けられる止水装置であって、シート部と一対の堰板部と可撓部とを備え、前記シート部の両長辺端部が前記堰板部の各々に連結され、前記シート部と前記可撓部が軟質素材から構成され、前記堰板部が硬質素材から構成され、前記シート部、堰板部、可撓部とが一体的に構成されたことを特徴とする止水装置。   A water stop device attached between the play, comprising a seat portion, a pair of weir plate portions, and a flexible portion, wherein both long side end portions of the sheet portion are connected to each of the weir plate portions, and the sheet portion And the flexible portion is made of a soft material, the dam plate portion is made of a hard material, and the sheet portion, the dam plate portion, and the flexible portion are integrally formed. . 前記可撓部が前記一対の堰板部の各々の一辺から外側に向けて斜めに延出することを特徴とする請求項11に記載の止水装置。   The water stop device according to claim 11, wherein the flexible portion extends obliquely outward from one side of each of the pair of dam plates. 前記可撓部と堰板部のなす角度が30〜60°であることを特徴とする請求項12に記載の止水装置。   The water stop device according to claim 12, wherein an angle formed by the flexible portion and the dam plate portion is 30 to 60 °. 前記シート部と可撓部は同一素材から一体的に成形されることを特徴とする請求項11に記載の止水装置。   The water stop device according to claim 11, wherein the sheet portion and the flexible portion are integrally formed from the same material.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010018949A (en) * 2008-07-08 2010-01-28 Nitta Ind Corp Construction method for cut-off material
CN106555376A (en) * 2017-01-22 2017-04-05 中铁二院工程集团有限责任公司 A kind of non-fragment orbit railroad bridge retractor device

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JPS5859803U (en) * 1981-10-14 1983-04-22 日本鋳造株式会社 Expansion joint for bridges
JPS6235006U (en) * 1985-08-21 1987-03-02
JPH01142105A (en) * 1987-11-26 1989-06-05 Tooteku Kk Irregular joint opening corresponding overhang formwork
JPH0227007A (en) * 1988-07-14 1990-01-29 Yasuyuki Fujimura Joint form for expansion joint
JPH0641909A (en) * 1990-12-28 1994-02-15 Motonosuke Arai Road seam expansion device
JPH0742107A (en) * 1993-08-03 1995-02-10 Sho Bond Constr Co Ltd Expansion joint structure for vertical joint of bridge structure
JP2001342606A (en) * 2000-06-02 2001-12-14 Kuritekku Kikaku:Kk Highway bridge expansion joint

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Publication number Priority date Publication date Assignee Title
JPS4890435U (en) * 1972-02-02 1973-10-31
JPS52124727A (en) * 1976-04-12 1977-10-20 Kensuke Asakura Expansion joint of bridge
JPS5859803U (en) * 1981-10-14 1983-04-22 日本鋳造株式会社 Expansion joint for bridges
JPS6235006U (en) * 1985-08-21 1987-03-02
JPH01142105A (en) * 1987-11-26 1989-06-05 Tooteku Kk Irregular joint opening corresponding overhang formwork
JPH0227007A (en) * 1988-07-14 1990-01-29 Yasuyuki Fujimura Joint form for expansion joint
JPH0641909A (en) * 1990-12-28 1994-02-15 Motonosuke Arai Road seam expansion device
JPH0742107A (en) * 1993-08-03 1995-02-10 Sho Bond Constr Co Ltd Expansion joint structure for vertical joint of bridge structure
JP2001342606A (en) * 2000-06-02 2001-12-14 Kuritekku Kikaku:Kk Highway bridge expansion joint

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010018949A (en) * 2008-07-08 2010-01-28 Nitta Ind Corp Construction method for cut-off material
CN106555376A (en) * 2017-01-22 2017-04-05 中铁二院工程集团有限责任公司 A kind of non-fragment orbit railroad bridge retractor device

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