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JP4844863B2 - Rehabilitation structure of waterway and its construction method - Google Patents
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JP4844863B2 - Rehabilitation structure of waterway and its construction method - Google Patents

Rehabilitation structure of waterway and its construction method Download PDF

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JP4844863B2
JP4844863B2 JP2003355982A JP2003355982A JP4844863B2 JP 4844863 B2 JP4844863 B2 JP 4844863B2 JP 2003355982 A JP2003355982 A JP 2003355982A JP 2003355982 A JP2003355982 A JP 2003355982A JP 4844863 B2 JP4844863 B2 JP 4844863B2
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panel
water channel
existing water
panel material
resin
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JP2005120664A (en
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勇 長束
英明 石村
勝 渡嘉敷
充広 森
行志 荒川
豊 生田目
誠 向後
義廣 五十嵐
章 田熊
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National Agriculture and Food Research Organization
Resonac Corp
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Hitachi Chemical Co Ltd
National Agriculture and Food Research Organization
Showa Denko Materials Co Ltd
Resonac Corp
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Description

本発明は、例えば、用水路、上下水道、河川、運河等の水路の更生構造およびその施工方法に関する。   The present invention relates to a rehabilitation structure of a water channel such as a water channel, a water and sewage system, a river, and a canal, and a construction method thereof.

従来、水路は、現場打ちコンクリートや、プレキャストコンクリート部材の組み合わせによって形成され、底部とこの底部の幅方向両端に立設された立上り部とを含んで構成されている。
ところで、このような従来の水路では、経年変化によりコンクリートが劣化して底部や立上り部の表面に凹みが生じ、内部の鉄筋材の露出や錆汁の漏出等が発生して、円滑な通水が困難となる場合がある。
以上のような問題点を解決するため、モルタル等の補修材を凹みに充填して部分補修する方法(例えば、特許文献1参照)や、樹脂にガラス繊維を混合したものを水路の表面に吹き付けてコーティング膜を形成して補修する方法が採られている。さらには、既存の水路を撤去して新たな水路を建設する方法も採られている。
Conventionally, a water channel is formed by a combination of cast-in-place concrete or a precast concrete member, and includes a bottom portion and rising portions erected at both ends in the width direction of the bottom portion.
By the way, in such a conventional water channel, the concrete deteriorates due to secular change, and the surface of the bottom part and the rising part is dented, the internal reinforcing bar material is exposed, the rust juice leaks out, etc. May be difficult.
In order to solve the above-described problems, a method of partially repairing a dent by filling a repair material such as mortar (for example, see Patent Document 1), or a mixture of resin and glass fiber is sprayed on the surface of a water channel. A method of repairing by forming a coating film is employed. Furthermore, a method of removing an existing waterway and constructing a new waterway is also employed.

特開2001−213653号公報JP 2001-213653 A

しかし、補修材で部分補修する方法では、凹みの補修跡が散在することとなり、また、水路表面にコーティング膜を形成する方法では、既に形成された凹凸がそのまま残るため、水路の表面抵抗(粗度係数)が大きくなり、通水性が低下してしまうという問題や、耐久性が乏しい等の問題がある。さらに、これらの方法では、水路の美観を損ねるおそれがある。
また、水路を新設する方法では、既存の水路の撤去、山留め、掘削、コンクリート打設等の多大な時間と費用がかかっていた。
However, in the method of partial repair with the repair material, dent repair marks are scattered, and in the method of forming a coating film on the surface of the channel, the already formed irregularities remain as it is, so the surface resistance of the channel (roughness) (Degree coefficient) increases, and there are problems such as poor water permeability and poor durability. Furthermore, these methods may impair the beauty of the waterway.
In addition, in the method of newly establishing a waterway, it took a great deal of time and money to remove the existing waterway, fix it, excavate, and place concrete.

本発明の目的は、円滑な通水を確保でき、外観良好かつ安価で耐久性に優れた水路の更生構造およびその施工方法を提供することにある。   An object of the present invention is to provide a rehabilitation structure of a water channel that can ensure smooth water flow, has a good appearance, is inexpensive, and has excellent durability, and a construction method therefor.

上記目的を達成するため、本発明の水路の更生構造およびその施工方法は、次の構成を採用する。
請求項1に記載の水路の更生構造は、既存水路の表面のうち少なくとも水中となる部分を覆う複数のレジンコンクリート製のパネル材と、これらパネル材と前記既存水路の表面との間に設けられた接着層とを備え、前記接着層は、前記パネル材と前記既存水路の表面との間に注入し、硬化させた樹脂系接着剤で構成され、硬化後において40%以上の伸び率を有して形成され、前記既存水路と前記パネル材との間に当該パネル材の面に沿った方向の相対変位が生じた場合には、前記接着層弾性変形することによって前記相対変位に前記パネル材が追従可能に構成されていることを特徴とする。
In order to achieve the above object, the water rehabilitation structure of the present invention and the construction method thereof employ the following configuration.
The rehabilitation structure for a water channel according to claim 1 is provided between a plurality of resin concrete panel materials that cover at least a portion of the surface of the existing water channel that becomes underwater, and between the panel material and the surface of the existing water channel. The adhesive layer is composed of a resin adhesive that is injected and cured between the panel material and the surface of the existing water channel, and has an elongation rate of 40% or more after curing. It was formed, when the direction of the relative displacement along the surface of the panel member between the existing water channel and the panel material occurs prior SL-relative displacement by the adhesive layer is elastically deformed The panel material is configured to be capable of following .

ここで、レジンコンクリートとは、ポリマーコンクリートの一種であって、結合材にレジン(合成樹脂)を用いて骨材を結合したものをいう。このようなレジンコンクリートは、普通コンクリートに比べ、耐久性、耐摩耗性に富む性質を有している。   Here, the resin concrete is a kind of polymer concrete and is obtained by combining aggregates using a resin (synthetic resin) as a binder. Such resin concrete has properties rich in durability and wear resistance as compared with ordinary concrete.

この発明によれば、既存水路の表面のうち水中となる部分に接着層を介して複数のパネル材を取り付けることにより、既存水路にパネル材を一体化させる。従って、水が流れる面に既存水路のコンクリート構造体が露出しないため、コンクリート構造体内の鋼材の露出や錆汁の漏出を抑えることができる。
また、パネル材を平滑なレジンコンクリートで形成したので、水路表面の粗度を改善して、円滑な通水を確保できるうえに、部分補修する場合や、水路表面にコーティング膜を形成する場合に比べ、水路表面の外観を良好にできる。
さらに、既存水路の断面は若干縮小されるが、表面粗度が改善されるため、少なくとも従前の通水量を確保することができる
さらに、樹脂系接着剤は、硬化後においても優れた弾力性を有するので、前述のようなパネル材と既存水路との間生じる変位差を良好に吸収することができ、パネル材のひび割れをより確実に防止することができる
According to the present invention, the panel material is integrated with the existing water channel by attaching the plurality of panel materials to the underwater portion of the surface of the existing water channel via the adhesive layer. Therefore, since the concrete structure of the existing water channel is not exposed on the surface through which water flows, exposure of the steel material in the concrete structure and leakage of rust juice can be suppressed.
In addition, since the panel material is made of smooth resin concrete, it can improve the roughness of the channel surface, ensure smooth water flow, and when repairing partly or forming a coating film on the channel surface In comparison, the appearance of the water channel surface can be improved.
Furthermore, although the cross section of the existing water channel is slightly reduced, since the surface roughness is improved, at least the conventional water flow rate can be secured .
In addition, since the resin adhesive has excellent elasticity even after curing, it can absorb the displacement difference generated between the panel material and the existing water channel as described above, and more cracking of the panel material can be achieved. It can be surely prevented .

また、パネル材と既存水路の表面との間に樹脂系接着剤を注入し、硬化させることで、接着層が形成され、この接着層を介してパネル材が既存水路の表面に接着されるので、接着層を既存水路の表面に形成した後にパネル材を接着させたり、パネル材の表面に接着シートなどにより接着層を形成した後に既存水路の表面に貼り付けたりする必要がないため、作業手間を掛けずに補修作業を実施することができる。
さらに、樹脂系接着剤の注入、硬化により形成された接着層を介してパネル材を既存水路の表面に接着したので、例えば気温の変動や地震等によりパネル材と既存水路との間に変位差が生じた場合でも、接着層の弾力性により変位差を吸収することができるため、パネル材にひび割れ等が生じることなく、通水性や外観を良好に維持させることができる。
In addition, an adhesive layer is formed by injecting and curing a resin adhesive between the panel material and the surface of the existing water channel, and the panel material is adhered to the surface of the existing water channel via this adhesive layer. It is not necessary to attach the panel material after forming the adhesive layer on the surface of the existing water channel, or to attach the adhesive layer to the surface of the panel material with an adhesive sheet etc. Repair work can be carried out without applying
Furthermore, since the panel material is bonded to the surface of the existing water channel through an adhesive layer formed by injection and curing of resin adhesive, there is a difference in displacement between the panel material and the existing water channel due to, for example, temperature fluctuations or earthquakes. Even in the case of the occurrence of the problem, since the displacement difference can be absorbed by the elasticity of the adhesive layer, the water permeability and appearance can be maintained well without causing cracks or the like in the panel material.

請求項2に記載の水路の更生構造は、請求項1に記載の水路の更生構造において、前記パネル材は、プレス加工により成形され、厚みが8mm〜15mmであり、前記既存水路の表面と対向する面に粗面または凹凸が形成されていることを特徴とする。
ここで、パネル材の表面に形成される粗面または凹凸としては、ショットブラストやサンドブラスト等の表面処理によって形成した粗面でもよく、また製造時に予め略山形の突起を形成してもよく、ガラス繊維等を表面から突出させてもよく、さらに鋼製のアングル材等をパネル材に打ち込み、その一部をパネル材表面から突出させたものでもよい。また、凹凸を設けたパネル材の表面に、さらに粗面を形成してもよい。
The rehabilitation structure of a water channel according to claim 2 is the rehabilitation structure of a water channel according to claim 1, wherein the panel material is formed by pressing, has a thickness of 8 mm to 15 mm, and faces the surface of the existing water channel. A rough surface or unevenness is formed on the surface to be processed.
Here, the rough surface or unevenness formed on the surface of the panel material may be a rough surface formed by a surface treatment such as shot blasting or sand blasting, or may be formed with a substantially chevron-shaped projection in advance at the time of manufacture. Fibers or the like may be protruded from the surface, and a steel angle material or the like may be driven into the panel material, and a part thereof may protrude from the panel material surface. Moreover, you may form a rough surface further on the surface of the panel material which provided the unevenness | corrugation.

この発明によれば、必要なパネル材の強度を確保しつつ、水路の断面積の減少率を低く抑えることができる。この際、パネル材の厚みは、8mm〜15mmに限らず、パネル材の強度が確保できる範囲で有れば8mm未満としてもよく、また水路の断面積の減少率がさほど問題にならない場合には、15mmよりも厚くてもよい。
また、パネル材の表面に粗面や凹凸を形成したことにより、接着層との間の接着力を高めることができるので、より強固かつ弾性的にパネル材を既存水路の表面に固定させることができる。
According to this invention, the reduction rate of the cross-sectional area of a waterway can be suppressed low, ensuring the intensity | strength of a required panel material. At this time, the thickness of the panel material is not limited to 8 mm to 15 mm, and may be less than 8 mm as long as the strength of the panel material can be ensured. In addition, when the reduction rate of the cross-sectional area of the water channel does not matter so much It may be thicker than 15 mm.
In addition, by forming a rough surface or unevenness on the surface of the panel material, it is possible to increase the adhesive force between the adhesive layer and the panel material can be more firmly and elastically fixed to the surface of the existing water channel. it can.

請求項3に記載の水路の更生構造は、請求項1または請求項2に記載の水路の更生構造において、前記パネル材は、前記既存水路の通水方向に交差する断面に関して、当該既存水路の底面を覆う底面パネルと、当該既存水路の二側面を覆う一対の側面パネルと、これらの底面パネルおよび側面パネルを連結する一対の角部パネルとを備えて構成されていることを特徴とする。
ここで、パネル材を構成する底面パネル、および一対の側面パネルを、それぞれ1枚のパネル材で構成してもよく、また2枚以上の複数枚のパネル材を組み合わせて構成してもよい。また、一対の角部パネルを、既存水路の底面および側面の各々に沿った2枚のパネル材で構成してもよく、また既存水路の底面および側面の交差部にハンチが設けられている場合には、角部パネルを既存水路の底面、側面、およびハンチ面の各々に沿った3枚のパネル材で構成してもよい。
この発明によれば、パネル材を底面パネル、一対の側面パネル、および一対の角部パネルに分割して構成したので、各々のパネル材が小型化され、容易に取り扱うことができるから、施工能率を向上できる。
なお、ボックスカルバート等のように天井部を有した水路の場合、天井部分に天井パネルを設置することも可能である。
The rehabilitation structure of a water channel according to claim 3 is the rehabilitation structure of a water channel according to claim 1 or claim 2, wherein the panel material is a cross section of the existing water channel with respect to a cross section intersecting a water flow direction of the existing water channel. A bottom panel that covers the bottom surface, a pair of side panels that cover two side surfaces of the existing water channel, and a pair of corner panels that connect the bottom panel and the side panels are characterized.
Here, each of the bottom panel and the pair of side panels constituting the panel material may be composed of one panel material, or may be composed of a combination of two or more panel materials. Moreover, a pair of corner | angular part panel may be comprised with two panel materials along each of the bottom face and side surface of an existing water channel, and when the haunch is provided in the intersection of the bottom surface and side surface of an existing water channel Alternatively, the corner panel may be composed of three panel members along each of the bottom surface, the side surface, and the haunch surface of the existing water channel.
According to the present invention, since the panel material is divided into the bottom panel, the pair of side panels, and the pair of corner panels, each panel material is miniaturized and can be easily handled. Can be improved.
In the case of a water channel having a ceiling portion such as a box culvert, a ceiling panel can be installed on the ceiling portion.

請求項に記載の水路更生構造の施工方法は、既存水路の表面のうち少なくとも水中となる部分を複数のレジンコンクリート製のパネル材で覆い、これらパネル材と前記既存水路の表面との間に設けた接着層によって当該既存水路の表面に当該パネル材を接着する水路更生構造の施工方法であって、前記パネル材は、前記既存水路の通水方向に交差する断面に関して、当該既存水路の底面を覆う底面パネルと、当該既存水路の二側面を覆う一対の側面パネルと、これらの底面パネルおよび側面パネルを連結する一対の角部パネルと、を備えて構成されており、既存水路から水を抜き取り、この既存水路の表面のうち少なくとも水中となる部分に、複数のレジンコンクリート製のパネル材を当該既存水路の表面に所定の隙間を介して対向させて配置し、前記パネル材の配置に際して、先ず、前記既存水路の底面および側面の交差部にスペーサを介して前記角部パネルを配置するとともに、前記底面パネルを前記角部パネルの側端部に接着して前記既存水路の底面に配置し、これに続いて、前記側面パネルを前記角部パネルの上端部に接着して前記既存水路の側面に配置し、硬化前において0.2〜0.6Pa・sの粘度を有する樹脂系接着剤を準備し、この樹脂系接着剤を前記パネル材と既存水路の表面との隙間に注入し、注入した樹脂系接着剤を硬化させて40%以上の伸び率を有する接着層を形成し、この接着層のみを介して前記パネル材を前記既存水路の表面に接着させることを特徴とする。 The construction method of the waterway rehabilitation structure according to claim 4 covers at least a portion of the surface of the existing waterway that is underwater with a plurality of resin concrete panel materials, and between these panel materials and the surface of the existing waterway. A construction method of a water channel rehabilitation structure in which the panel material is adhered to the surface of the existing water channel by an adhesive layer provided, the panel material being a bottom surface of the existing water channel with respect to a cross section intersecting a water flow direction of the existing water channel. A bottom panel that covers the two sides of the existing water channel, and a pair of corner panels that connect the bottom panel and the side panel. Pull out and place a plurality of resin concrete panel materials on the surface of the existing water channel with a predetermined gap on at least the part that will be underwater. Adhering location, upon placement of said panel member, first, the positioning the corner panels via a spacer to the intersection of the bottom and side surfaces of the existing water channel, the bottom panel to the side edge portion of the corner panel Then, it is disposed on the bottom surface of the existing water channel, and subsequently, the side panel is adhered to the upper end of the corner panel and disposed on the side surface of the existing water channel , and 0.2 to 0.6 Pa before curing. Prepare a resin adhesive having a viscosity of s, inject this resin adhesive into the gap between the panel material and the surface of the existing water channel, cure the injected resin adhesive, and increase the elongation by 40% or more. An adhesive layer having a rate is formed, and the panel material is adhered to the surface of the existing water channel only through the adhesive layer.

この発明によれば、請求項1と同様に、コンクリート構造体内の鋼材の露出や錆汁の漏出を抑えることができるとともに、水路の劣化を防止することができる。また、円滑な通水を確保でき、水路表面の外観を良好にできるうえに、安価に施工できる。さらに、騒音を出さずに施工できるうえに、産業廃棄物の発生を抑えることができるため、環境保護に貢献できる。また、パネル材を強固かつ弾性的に補修面に接着できる
また、比較的小さい粘度を有する樹脂系接着剤を用いることで、パネル材と既存水路の表面との間に接着剤を注入する際に、空隙が生じず、接着層を良好に形成することができる。そして、注入する接着剤の粘度が小さいので、注入作業時において、接着剤がパネル材と既存水路の表面との隙間にくまなく流れ込んでいくため、例えば注入位置が1箇所であっても、広い範囲に接着剤を注入することができ、注入作業を効率よく実施することができる。さらに、樹脂系接着剤は、硬化後においても優れた弾力性を有するので、前述のようなパネル材と既存水路との間生じる変位差を良好に吸収することができ、パネル材のひび割れをより確実に防止することができる。
According to the present invention, similarly to the first aspect, it is possible to suppress the exposure of the steel material in the concrete structure and the leakage of the rust juice, and to prevent the deterioration of the water channel. Moreover, smooth water flow can be ensured, the appearance of the surface of the waterway can be improved, and construction can be performed at low cost. Furthermore, construction can be performed without generating noise, and the generation of industrial waste can be suppressed, contributing to environmental protection. Further, the panel material can be firmly and elastically bonded to the repair surface .
In addition, by using a resin-based adhesive having a relatively small viscosity, when the adhesive is injected between the panel material and the surface of the existing water channel, no gap is generated, and the adhesive layer can be formed well. it can. And since the viscosity of the adhesive to be injected is small, the adhesive flows throughout the gap between the panel material and the surface of the existing water channel during the injection operation. The adhesive can be injected into the range, and the injection operation can be performed efficiently. In addition, since the resin adhesive has excellent elasticity even after curing, it can absorb the displacement difference generated between the panel material and the existing water channel as described above, and more cracking of the panel material can be achieved. It can be surely prevented.

また、パネル材を底面パネル、一対の側面パネル、および一対の角部パネルに分割して構成したので、各々のパネル材が小型化され、容易に取り扱うことができるから、施工能率を向上できる In addition , since the panel material is divided into a bottom panel, a pair of side panels, and a pair of corner panels, each panel material is reduced in size and can be easily handled, so that the construction efficiency can be improved .

以下、本発明の実施形態を図面に基づいて説明する。
図1には、既存の水路の更生構造1の断面図が示されている。
図1において、既存水路2は、上部が開放された断面略コ字形の用水路であって、現場でコンクリートを打設することによって一体に形成されたものであり、底面3と、この底面3の幅方向B両端から立ち上がった側面4とを備えている。この側面4は、鉛直方向から幅方向B外側へ若干広がった傾斜角を有して立ち上がっており、既存水路2の底面3と側面4とは、鈍角となる所定の交差角度で交差している。そして、既存水路2では、経年変化によりコンクリートが劣化して、その底面3や側面4に凹凸が生じており、摩擦抵抗が大きくなって通水性が低下している。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a cross-sectional view of an existing water channel rehabilitation structure 1.
In FIG. 1, an existing water channel 2 is a water channel having a substantially U-shaped cross-section with an open top, and is formed integrally by placing concrete on site, and includes a bottom surface 3 and a bottom surface 3. And side surfaces 4 rising from both ends in the width direction B. The side surface 4 rises with an inclination angle slightly widened from the vertical direction to the outside in the width direction B, and the bottom surface 3 and the side surface 4 of the existing water channel 2 intersect at a predetermined intersection angle that is an obtuse angle. . And in the existing water channel 2, concrete deteriorates with a secular change, the unevenness | corrugation has arisen in the bottom face 3 and the side surface 4, the frictional resistance becomes large, and water permeability falls.

更生構造1は、既存水路2の表面の略全面(底面3および両側面4)を覆う複数のレジンコンクリート製のパネル材10と、パネル材10と既存水路2の表面との間に設けられた接着層20とを備えている。そして、更生構造1によって更生された更生水路2Aの底面3Aおよび側面4Aは、パネル材10によって平滑に形成され、通水性および美観が向上されている。   The rehabilitation structure 1 is provided between a plurality of resin concrete panel members 10 covering substantially the entire surface (the bottom surface 3 and both side surfaces 4) of the existing water channel 2, and between the panel material 10 and the surface of the existing water channel 2. And an adhesive layer 20. And the bottom face 3A and the side face 4A of the rehabilitation water channel 2A rehabilitated by the rehabilitation structure 1 are formed smoothly by the panel material 10, and water permeability and aesthetics are improved.

パネル材10は、熱硬化性樹脂である不飽和ポリエステル樹脂、充填材としての炭酸カルシウムおよび骨材、補強材、および添加剤等を成分として、高温高圧条件下でのプレス成形により製造される。各成分の配合は、不飽和ポリエステル樹脂が13〜15%、炭酸カルシウムが30〜35%、骨材が45〜55%、補強材が2〜5%、添加剤等が1〜2%となっている。
パネル材10の基本寸法は、大きさが1m×2m、厚みが10mm、重量は約50kgであり、表面の粗度係数は、0.010〜0.012となっている。
なお、骨材として軽量骨材を用いることにより、パネル材10を軽量化してもよく、また、ガラス繊維等を配合することにより、パネル材10の強度を高めることも可能である。
また、パネル材の成形方法としては、プレス加工により成形するものに限らず、型枠に流し込んで形成する注型成形でもよい。
The panel material 10 is manufactured by press molding under high-temperature and high-pressure conditions using an unsaturated polyester resin that is a thermosetting resin, calcium carbonate and an aggregate as a filler, a reinforcing material, and additives as components. The composition of each component is 13-15% for unsaturated polyester resin, 30-35% for calcium carbonate, 45-55% for aggregate, 2-5% for reinforcing material, and 1-2% for additives, etc. ing.
The basic dimensions of the panel material 10 are a size of 1 m × 2 m, a thickness of 10 mm, a weight of about 50 kg, and a surface roughness coefficient of 0.010 to 0.012.
Note that the weight of the panel material 10 may be reduced by using a lightweight aggregate as the aggregate, and the strength of the panel material 10 can be increased by blending glass fiber or the like.
In addition, the method for forming the panel material is not limited to the one formed by press working, but may be cast forming by pouring into a mold.

パネル材10は、既存水路2の底面3を覆う底面パネル11と、既存水路2の側面4を覆う一対の側面パネル12と、これらの底面パネル11および側面パネル12を連結する一対の角部パネル13とを備えて構成されている。すなわち、既存水路2の通水方向Aに交差する一断面に対して、1枚の底面パネル11と、2枚の側面パネル12と、2枚の角部パネル13とからなる5枚のパネル材10が1セットになって取り付けられている。   The panel material 10 includes a bottom panel 11 that covers the bottom surface 3 of the existing water channel 2, a pair of side panels 12 that cover the side surface 4 of the existing water channel 2, and a pair of corner panels that connect the bottom panel 11 and the side panel 12. 13. In other words, for one cross section intersecting the water flow direction A of the existing water channel 2, five panel members composed of one bottom panel 11, two side panels 12, and two corner panels 13. 10 is attached as a set.

図2から図4には、それぞれ底面パネル11、側面パネル12、および角部パネル13の正面図および各側面図が示されている。
図2において、底面パネル11は、更生後の水路の底面となる上面部11Aと、四周に設けられ厚さ方向に段付きとなる連結部11B,11Cとを有して形成されている。通水方向Aの前後に形成された連結部11Bは、他の底面パネル11に同様に形成された連結部11Bに重ね合わされ、これらの連結部11B同士を接着剤で接合することで、底面パネル11同士が連結されるようになっている。また、水路の幅方向B両端に形成された連結部11Cは、後述する角部パネル13の連結部13Dに重ね合わされ、これらの連結部11C,13D同士を接着剤で接合することで、底面パネル11と角部パネル13とが連結されるようになっている。
The front view and each side view of the bottom panel 11, the side panel 12, and the corner panel 13 are shown in FIGS.
In FIG. 2, the bottom panel 11 is formed by having an upper surface portion 11A that becomes the bottom surface of the water channel after rehabilitation, and connecting portions 11B and 11C that are provided around the circumference and stepped in the thickness direction. The connecting portions 11B formed before and after the water flow direction A are overlapped with the connecting portions 11B similarly formed on the other bottom panel 11, and these connecting portions 11B are joined to each other with an adhesive so that the bottom panel 11 are connected to each other. Further, the connecting portions 11C formed at both ends in the width direction B of the water channel are overlapped with connecting portions 13D of the corner panel 13 to be described later, and these connecting portions 11C and 13D are joined to each other with an adhesive so that the bottom panel. 11 and the corner panel 13 are connected.

図3において、側面パネル12は、更生後の水路の上端となる上端部12Aと、上端部12A以外の三辺に設けられ厚さ方向に段付きとなる連結部12B,12Cとを有して形成されている。通水方向Aの前後に形成された連結部12Bは、他の側面パネル12に同様に形成された連結部12Bに重ね合わされ、これらの連結部12B同士を接着剤で接合することで、側面パネル12同士が連結されるようになっている。また、上端部12Aの反対側に形成された連結部12Cは、後述する角部パネル13の連結部13Eに重ね合わされ、これらの連結部12C,13E同士を接着剤で接合することで、側面パネル12と角部パネル13とが連結されるようになっている。   In FIG. 3, the side panel 12 has an upper end portion 12A that is the upper end of the rehabilitated water channel, and connecting portions 12B and 12C that are provided on three sides other than the upper end portion 12A and are stepped in the thickness direction. Is formed. The connecting portions 12B formed before and after the water flow direction A are overlapped with the connecting portions 12B similarly formed on the other side panels 12, and the connecting portions 12B are joined to each other with an adhesive, thereby forming the side panels. 12 are connected with each other. Further, the connecting portion 12C formed on the opposite side of the upper end portion 12A is overlapped with a connecting portion 13E of a corner panel 13 described later, and these connecting portions 12C and 13E are joined with an adhesive to form a side panel. 12 and the corner | angular part panel 13 are connected.

図4において、角部パネル13は、底面パネル11と略同一面上に設けられる底面部13Aと、側面パネル12と略同一面上に設けられる側面部13Bとを備え、これらの底面部13Aおよび側面部13Bが可撓性を有した面材である樹脂シートやガラス繊維に樹脂系接着剤を含浸させたシート14で連結されて形成されている。そして、角部パネル13の通水方向Aの前後には、厚さ方向に段付きとなる連結部13Cが形成され、この連結部13Cを他の角部パネル13に同様に形成された連結部13Cに重ね合わせ、接着剤で接合することで、角部パネル13同士が連結されるようになっている。また、角部パネル13の底面パネル11側には、底面パネル11の連結部11Cに接合される連結部13Dが形成され、角部パネル13の側面パネル12側には、側面パネル12の連結部12Cに接合される連結部13Eが形成されている。   In FIG. 4, the corner panel 13 includes a bottom surface portion 13 </ b> A provided on substantially the same surface as the bottom surface panel 11, and a side surface portion 13 </ b> B provided on substantially the same surface as the side surface panel 12. The side surface portion 13B is formed by being connected by a resin sheet that is a flexible face material or a sheet 14 in which glass fiber is impregnated with a resin adhesive. And before and behind the water flow direction A of the corner | angular part panel 13, the connection part 13C which becomes a step in thickness direction is formed, and this connection part 13C is similarly formed in the other corner | angular panel 13 in the connection part. The corner panels 13 are connected to each other by being superposed on 13C and bonded with an adhesive. Further, a connecting portion 13D to be joined to the connecting portion 11C of the bottom panel 11 is formed on the bottom panel 11 side of the corner panel 13, and a connecting portion of the side panel 12 is formed on the side panel 12 side of the corner panel 13. A connecting portion 13E joined to 12C is formed.

以上のように、底面パネル11、側面パネル12、および角部パネル13には、それぞれ互いに連結するための連結部11C,12C,13D,13Eが形成されており、これらの厚さ方向に段付きに形成された連結部11C,12C,13D,13E同士を接着剤で接合することによって、各パネル11,12,13同士の接合強度が確保されるとともに、接着層20を構成する樹脂系接着剤21(後述)が各パネル11,12,13の接合部分から漏れ出さないようになっている。   As described above, the bottom panel 11, the side panel 12, and the corner panel 13 are formed with the connecting portions 11C, 12C, 13D, and 13E for connecting to each other, and are stepped in the thickness direction. By joining the connecting portions 11C, 12C, 13D, and 13E formed on each other with an adhesive, the bonding strength between the panels 11, 12, and 13 is secured, and the resin adhesive that constitutes the adhesive layer 20 21 (described later) is prevented from leaking from the joint portion of each panel 11, 12, 13.

図5(A),(B)には、角部パネル13の設置状態を示す断面図が示されている。
図5において、角部パネル13の底面部13Aおよび側面部13Bは、シート14が折れ曲がることにより、互いの交差角度θが可変に構成されている。すなわち、底面部13Aおよび側面部13Bの交差位置における互いの端面には傾斜が設けられており、底面部13Aおよび側面部13Bは、交差角度θが鋭角(例えば、75°)となる状態から、図5(B)に示すように鈍角となる状態まで回動可能である。これにより、既存水路2の底面3と側面4との交差角度に応じて、角部パネル13の底面部13Aおよび側面部13Bの交差角度が調節できるようになっている。
なお、角部パネル13を設置した状態において、底面部13Aおよび側面部13Bの交差位置における互いの端面間には、接着剤13Fが充填され、隙間が埋められるようになっている。
5A and 5B are sectional views showing the installation state of the corner panel 13.
In FIG. 5, the bottom surface portion 13 </ b> A and the side surface portion 13 </ b> B of the corner panel 13 are configured such that the crossing angle θ is variable when the sheet 14 is bent. That is, the end surfaces of the bottom surface portion 13A and the side surface portion 13B are inclined to each other, and the bottom surface portion 13A and the side surface portion 13B are in a state where the intersection angle θ is an acute angle (for example, 75 °). As shown in FIG. 5B, it can be turned to an obtuse angle. Thereby, according to the crossing angle of the bottom face 3 and the side surface 4 of the existing water channel 2, the crossing angle of the bottom face part 13A and the side face part 13B of the corner panel 13 can be adjusted.
In addition, in the state which installed the corner | angular part panel 13, the adhesive agent 13F is filled between the mutual end surfaces in the intersection position of 13 A of bottom face parts, and the side part 13B, and a clearance gap is filled up.

以上のパネル材10において、既存水路2の表面と対向する側のパネル材10表面に凹凸を形成してもよい。パネル材10表面に形成する凹凸としては、図14(A)〜(C)に示すものが採用可能である。
図14(A)に示す凹凸は、パネル材10の表面からガラス繊維10Aを突出させて形成したものである。
図14(B)に示す凹凸は、パネル材10の成形時に予め略山形の突起10Bを形成したものである。
図14(C)に示す凹凸は、パネル材10に埋め込んだ鋼材(アングル材)10Cをパネル材10の表面から突出させて形成したものである。
また、これらの凹凸と併用して、ショットブラスト等の表面処理によりパネル材10の表面に粗面を形成してもよい。
このような凹凸や粗面を形成することにより、パネル材10と接着層20との接着強度を高めることができる。
In the panel material 10 described above, irregularities may be formed on the surface of the panel material 10 on the side facing the surface of the existing water channel 2. As the unevenness formed on the surface of the panel material 10, those shown in FIGS. 14A to 14C can be adopted.
The irregularities shown in FIG. 14A are formed by protruding glass fibers 10A from the surface of the panel material 10.
The irregularities shown in FIG. 14 (B) are obtained by forming substantially mountain-shaped projections 10B in advance when the panel material 10 is molded.
The unevenness shown in FIG. 14C is formed by projecting a steel material (angle material) 10 </ b> C embedded in the panel material 10 from the surface of the panel material 10.
Further, in combination with these irregularities, a rough surface may be formed on the surface of the panel material 10 by surface treatment such as shot blasting.
By forming such irregularities and rough surfaces, the adhesive strength between the panel material 10 and the adhesive layer 20 can be increased.

次に、更生構造1の接着層20は、既存水路2の表面とパネル材10との間に注入され、硬化した樹脂系接着剤21で構成されている。この樹脂系接着剤としては、不飽和ポリエステル樹脂が用いられている。
この樹脂系接着剤21の硬化前(液状)の粘度、およびポットライフ(樹脂が硬化するのに必要な時間)の測定値は、表1に示すようになっている。ここで、樹脂系接着剤21は、外気温(季節)によって、粘度や硬化時間が変化するため、添加剤や促進剤、硬化剤等の配合を適宜設定した夏用接着剤、春秋用接着剤、および冬用接着剤が用意されている。また、樹脂系接着剤21の硬化後の機械特性は、表2に示すようになっている。
Next, the adhesive layer 20 of the rehabilitation structure 1 is composed of a resin adhesive 21 that is injected and cured between the surface of the existing water channel 2 and the panel material 10. As this resin adhesive, unsaturated polyester resin is used.
Table 1 shows the measured values of the viscosity of the resin-based adhesive 21 before curing (liquid) and the pot life (time required for the resin to cure). Here, since the resin-based adhesive 21 changes in viscosity and curing time depending on the outside air temperature (season), a summer adhesive and a spring / autumn adhesive in which additives, accelerators, curing agents and the like are appropriately set. , And winter adhesives are available. Table 2 shows the mechanical properties of the resin-based adhesive 21 after curing.

Figure 0004844863
Figure 0004844863

Figure 0004844863
Figure 0004844863

表1、2において、液状の樹脂系接着剤21の粘度は、気温25℃の条件で、0.25〜0.45Pa・sとなっており、いずれの季節用のものでも、流動性が非常に高くなっている。さらに、硬化後の樹脂系接着剤21の伸び率は、40%以上(60%)となっており、接着層20は、非常に優れた伸縮性(弾力性)を有している。このような、樹脂系接着剤21を注入、硬化させて、既存水路2の表面にパネル材10を接着したことで、気温の変動や地震等によりパネル材10と既存水路2との間に変位差が生じた場合でも、接着層20の弾性により変位差を吸収することができるようになっている。   In Tables 1 and 2, the viscosity of the liquid resin adhesive 21 is 0.25 to 0.45 Pa · s at a temperature of 25 ° C., and the fluidity is very good for any season. It is getting higher. Furthermore, the elongation percentage of the resin-based adhesive 21 after curing is 40% or more (60%), and the adhesive layer 20 has very excellent stretchability (elasticity). By injecting and curing the resin adhesive 21 and bonding the panel material 10 to the surface of the existing water channel 2, the panel material 10 is displaced between the panel material 10 and the existing water channel 2 due to a change in temperature or an earthquake. Even when the difference occurs, the displacement difference can be absorbed by the elasticity of the adhesive layer 20.

次に本実施形態に係る水路更生構造の施工方法について、図6〜図13に基づいて説明する。
既存水路2から水を抜き取り、既存水路2の底面3および側面4の付着物をワイヤーブラシで清掃し、送風機等でブロー掃きした後、表面をウォッシャで洗浄しておく。
そして、既存水路2の底面3において、レベルの測量を行う。この際、測量点としては、例えば既存水路2の幅方向B両端側の2点と、中央付近の1点であり、通水方向Aに関しては、パネル材10の長さに対して両端および中央の3点である。また、幅方向B両端側の2点の測量点は、角部パネル13の底面部13Aが設置される位置とされている。
Next, the construction method of the waterway rehabilitation structure according to the present embodiment will be described with reference to FIGS.
Water is extracted from the existing water channel 2, the deposits on the bottom surface 3 and the side surface 4 of the existing water channel 2 are cleaned with a wire brush, blown with a blower or the like, and then the surface is washed with a washer.
Then, level surveying is performed on the bottom surface 3 of the existing water channel 2. At this time, the survey points are, for example, two points on both ends in the width direction B of the existing water channel 2 and one point near the center. With respect to the water flow direction A, both ends and the center with respect to the length of the panel material 10. The three points. Further, the two survey points on both ends in the width direction B are positions where the bottom surface portion 13A of the corner panel 13 is installed.

レベル測量後、図6に示すように、幅方向B両端側の2点の測量点近傍に、高さ調整したスペーサ15Aを設置する。そして、設置したスペーサ15Aの上面に合わせて、既存水路2の底面3に敷砂5を平らに敷きつめる。このスペーサ15Aは、例えば大きさ80mm×40mmで、厚さ寸法が2mmまたは3mmの合成樹脂製等の板材(セットプレート)である。
なお、既存水路2の底面3が平坦で凹凸が少ない場合には、敷砂5を省略することも可能である。
次に、図7に示すように、角部パネル13を、その底面部13Aがスペーサ15A上に載置されるように、敷砂5の上に設置する。そして、角部パネル13の側面部13Bを既存水路2の側面4側に回動させて、側面部13Bに取り付けたスペーサ15Bを既存水路2の側面4に当接させて位置決めする。このスペーサ15Bは、例えば厚さ寸法が2mmまたは3mmの合成樹脂製等の板材である。
After level surveying, as shown in FIG. 6, spacers 15 </ b> A whose heights are adjusted are installed in the vicinity of the two survey points on both ends in the width direction B. And according to the upper surface of the installed spacer 15A, the spread sand 5 is laid flat on the bottom surface 3 of the existing water channel 2. The spacer 15A is, for example, a plate material (set plate) made of synthetic resin having a size of 80 mm × 40 mm and a thickness of 2 mm or 3 mm.
In addition, when the bottom face 3 of the existing water channel 2 is flat and has few unevenness | corrugations, the bed sand 5 can also be abbreviate | omitted.
Next, as shown in FIG. 7, the corner panel 13 is placed on the spread sand 5 so that the bottom surface portion 13 </ b> A is placed on the spacer 15 </ b> A. And the side surface part 13B of the corner | angular part panel 13 is rotated to the side surface 4 side of the existing water channel 2, and the spacer 15B attached to the side surface part 13B is contacted to the side surface 4 of the existing water channel 2, and is positioned. The spacer 15B is a plate material made of synthetic resin or the like having a thickness dimension of 2 mm or 3 mm, for example.

角部パネル13が位置決めされた状態で、その連結部13Dに接着剤を塗布し、図8に示すように、底面パネル11を、その連結部11Cが連結部13Dに重なるようにして設置し、角部パネル13に接続させる。これらの底面パネル11および角部パネル13の連結部11C,13Dが接続された後に、前述した接着剤13Fを、角部パネル13の底面部13Aおよび側面部13Bの交差位置における互いの端面間に充填する。
この後、図9に示すように、角部パネル13同士の間にサポート16を架設し、角部パネル13の交差位置の接着剤13Fが硬化するまで、角部パネル13をサポート16で保持する。これにより、底面パネル11に固定された角部パネル13の底面部13Aを基準として、所定の交差角度θをもって側面部13Bが固定される。サポート16は、既存水路2の幅方向Bに延びる束材16Aと、角部パネル13の側面部13Bに当接する楔状の当接部材16Bとを有しており、束材16Aで当接部材16Bを角部パネル13に押圧するとともに、当接部材16Bの傾斜面で角部パネル13の側面部13Bを所定の角度に保持できるようになっている。
With the corner panel 13 positioned, an adhesive is applied to the connecting portion 13D, and as shown in FIG. 8, the bottom panel 11 is installed so that the connecting portion 11C overlaps the connecting portion 13D. Connect to the corner panel 13. After the connection portions 11C and 13D of the bottom panel 11 and the corner panel 13 are connected, the adhesive 13F described above is applied between the end surfaces of the corner panel 13 at the crossing position of the bottom surface portion 13A and the side surface portion 13B. Fill.
Thereafter, as shown in FIG. 9, the support 16 is laid between the corner panels 13, and the corner panel 13 is held by the support 16 until the adhesive 13 </ b> F at the intersection of the corner panels 13 is cured. . Thus, the side surface portion 13B is fixed with a predetermined crossing angle θ with reference to the bottom surface portion 13A of the corner panel 13 fixed to the bottom surface panel 11. The support 16 includes a bundle member 16A extending in the width direction B of the existing water channel 2 and a wedge-shaped contact member 16B that contacts the side surface portion 13B of the corner panel 13, and the contact member 16B is formed by the bundle member 16A. Is pressed against the corner panel 13, and the side surface portion 13B of the corner panel 13 can be held at a predetermined angle by the inclined surface of the contact member 16B.

次に、図10に示すように、既存水路2の表面と底面パネル11および角部パネル13との間に形成された隙間に樹脂系接着剤21を注入する。この際、樹脂系接着剤21は、注入作業の直前(例えば、15分以内)に不飽和ポリエステル樹脂の入った容器(例えば、一斗缶)22に添加剤や促進剤、硬化剤等を加え、ハンドミキサを用いて撹拌、混合して準備されたものを用いる。そして、既存水路2の側面4上部に、接着剤注入用の受け皿23を設置し、この受け皿23に容器22から樹脂系接着剤21を注ぎ込むことで、樹脂系接着剤21が既存水路2の側面4に沿って流れ落ちて、既存水路2の表面と底面パネル11および角部パネル13との間に注入される。この際、既存水路2の表面とパネル材10との間に空気溜まりができないようにするために、既存水路2の幅方向Bの片側から樹脂系接着剤21を注入し、反対側に流出させて、充填を確認する。   Next, as shown in FIG. 10, a resin-based adhesive 21 is injected into the gap formed between the surface of the existing water channel 2 and the bottom panel 11 and the corner panel 13. At this time, the resin-based adhesive 21 adds an additive, an accelerator, a curing agent, etc. to a container (for example, Ito can) 22 containing an unsaturated polyester resin immediately before the injection operation (for example, within 15 minutes). , Use a mixture prepared by stirring and mixing with a hand mixer. Then, a receiving tray 23 for injecting adhesive is installed on the upper portion of the side surface 4 of the existing water channel 2, and the resin-based adhesive 21 is poured into the receiving plate 23 from the container 22, so that the resin-based adhesive 21 is placed on the side surface of the existing water channel 2. 4 flows down along the surface of the existing water channel 2 and is injected between the bottom panel 11 and the corner panel 13. At this time, in order to prevent air accumulation between the surface of the existing water channel 2 and the panel material 10, the resin-based adhesive 21 is injected from one side in the width direction B of the existing water channel 2 and flows out to the opposite side. Check the filling.

このような樹脂系接着剤21の注入作業は、既存水路2の通水方向Aに関して側面4上の1箇所、または幅方向B左右の2箇所から実施される。すなわち、樹脂系接着剤21の粘度が小さいことにより、通水方向Aに関して複数箇所から注入しなくても、また注入ポンプ等により圧力を加えなくても、既存水路2の側面に沿って流し落とすだけで、容易かつ迅速に既存水路2の表面と底面パネル11および角部パネル13との隙間に注入できるようになっている。
なお、注入作業を同時に複数箇所から実施してもよく、また、注入ポンプ等を用いて樹脂系接着剤21を加圧注入してもよい。このようにすれば、さらに迅速に注入作業を行うことができるようになる。
Such an injection operation of the resin-based adhesive 21 is performed from one place on the side surface 4 with respect to the water flow direction A of the existing water channel 2 or two places on the left and right sides in the width direction B. That is, since the viscosity of the resin-based adhesive 21 is small, the resin-based adhesive 21 is allowed to flow along the side surface of the existing water channel 2 without being injected from a plurality of locations in the water flow direction A or without applying pressure by an injection pump or the like. As a result, it can be easily and quickly injected into the gap between the surface of the existing water channel 2 and the bottom panel 11 and the corner panel 13.
The injection operation may be performed simultaneously from a plurality of locations, or the resin adhesive 21 may be injected under pressure using an injection pump or the like. In this way, the injection operation can be performed more rapidly.

既存水路2の表面と底面パネル11および角部パネル13との隙間に注入された樹脂系接着剤21は、粘度が小さいため、敷砂5に浸透して既存水路2の幅方向Bおよび通水方向Aに広がり、その隙間内にくまなく注入されることになる。この際、底面パネル11および角部パネル13の通水方向A端部や、各パネル11,13の連結部分には、端面シールや保護テープを予め設けておくことで、樹脂系接着剤21の漏れ出しが防止できるようになっている。そして、樹脂系接着剤21が既存水路2の側面4と角部パネル13との間の所定高さ位置まで注入されたことを目視または注入量管理により確認し、樹脂系接着剤21の注入作業を終了する。   Since the resin adhesive 21 injected into the gap between the surface of the existing water channel 2 and the bottom panel 11 and the corner panel 13 has a low viscosity, it penetrates into the sand 5 and passes in the width direction B of the existing water channel 2 and the water flow. It spreads in the direction A and is injected all over the gap. At this time, by providing an end face seal and a protective tape in advance in the water flow direction A end of the bottom panel 11 and the corner panel 13 and the connecting portion of the panels 11 and 13, Leakage can be prevented. Then, it is confirmed visually or by injection amount management that the resin-based adhesive 21 has been injected up to a predetermined height position between the side surface 4 of the existing water channel 2 and the corner panel 13, and the injection operation of the resin-based adhesive 21 is performed. Exit.

以上のように注入された樹脂系接着剤21が硬化することにより、既存水路2の表面と底面パネル11および角部パネル13とが接着される。この樹脂系接着剤21が硬化するまでの時間は約120分であるが、接着をより確実にするために次の作業を翌日に実施することにして、その間、底面パネル11および角部パネル13を養生する。
ここで、既存水路2の底面3と底面パネル11および角部パネル13との間の敷砂5に含浸した樹脂系接着剤21が硬化すると、敷砂5を骨材としたレジンコンクリートが形成され、更生水路2Aの底面3Aの強度を確保できるようになっている。
As the resin-based adhesive 21 injected as described above is cured, the surface of the existing water channel 2 is bonded to the bottom panel 11 and the corner panel 13. The time until the resin-based adhesive 21 is cured is about 120 minutes. In order to make the adhesion more reliable, the next operation is performed on the next day. During this time, the bottom panel 11 and the corner panel 13 are set. To cure.
Here, when the resin adhesive 21 impregnated in the sand 5 between the bottom surface 3 of the existing water channel 2 and the bottom panel 11 and the corner panel 13 is cured, resin concrete having the sand 5 as an aggregate is formed. The strength of the bottom surface 3A of the rehabilitated water channel 2A can be secured.

次に、図11に示すように、既存水路2の側面4側にスペーサ15Cを取り付けた側面パネル12を、角部パネル13の上方に設置する。この際、側面パネル12の連結部12B,12Cに接着剤を塗布しておき、通水方向Aに並接される側面パネル12の連結部12B同士を重ねるとともに、側面パネル12の連結部13Eに重ねて設置し、側面パネル12同士、および側面パネル12と角部パネル13とを接続させる。
そして、図12に示すように、前記サポート16を架設し、側面パネル12および角部パネル13の位置決めを行うとともに、連結部12B,12C,13Eの接着剤を硬化させる。また、側面パネル12の通水方向A端部や、角部パネル13との連結部分に、端面シールや保護テープを設けて、樹脂系接着剤21の漏れ出しを防止する。
Next, as shown in FIG. 11, the side panel 12 with the spacer 15 </ b> C attached to the side 4 side of the existing water channel 2 is installed above the corner panel 13. At this time, an adhesive is applied to the connecting portions 12B and 12C of the side panel 12, and the connecting portions 12B of the side panel 12 juxtaposed in the water flow direction A are overlapped with each other, and the connecting portion 13E of the side panel 12 is overlapped. The side panels 12 and the side panel 12 and the corner panel 13 are connected to each other.
Then, as shown in FIG. 12, the support 16 is installed, the side panel 12 and the corner panel 13 are positioned, and the adhesives of the connecting portions 12B, 12C, and 13E are cured. Moreover, an end face seal or a protective tape is provided at the end of the side panel 12 in the water passage direction A or at the connecting portion with the corner panel 13 to prevent the resin adhesive 21 from leaking out.

次に、図13に示すように、既存水路2の側面4と側面パネル12との間に形成された隙間に樹脂系接着剤21を注入する。樹脂系接着剤21の注入作業は、前述の底面パネル11および角部パネル13部分の場合と同様であり、不飽和ポリエステル樹脂に添加剤や促進剤、硬化剤等を加えて撹拌、混合した樹脂系接着剤21を、受け皿23から既存水路2の側面4に沿って注ぎ込む。このような樹脂系接着剤21の注入作業は、既存水路2の通水方向Aに関して幅方向B左右の2箇所から実施される。そして、樹脂系接着剤21が側面パネル12の上端の高さ位置まで注入されたことを目視または注入量管理により確認し、樹脂系接着剤21の注入作業を終了する。
この後、注入した樹脂系接着剤21が硬化し、既存水路2の側面4と側面パネル12とが接着されるまで所定時間(例えば、翌日までの24時間)養生した後、サポート16を取り外して、更生作業が完了し、パネル材10で形成された底面3Aおよび側面4Aを有する更生水路2A(図1)が完成する。
Next, as shown in FIG. 13, a resin-based adhesive 21 is injected into a gap formed between the side surface 4 of the existing water channel 2 and the side panel 12. The injection operation of the resin-based adhesive 21 is the same as the case of the bottom panel 11 and the corner panel 13 described above, and a resin obtained by adding an additive, an accelerator, a curing agent, and the like to the unsaturated polyester resin and stirring and mixing the resin. The system adhesive 21 is poured from the tray 23 along the side surface 4 of the existing water channel 2. Such an injection operation of the resin-based adhesive 21 is performed from two places on the left and right in the width direction B with respect to the water flow direction A of the existing water channel 2. Then, it is confirmed visually or by injection amount management that the resin adhesive 21 has been injected up to the height position of the upper end of the side panel 12, and the injection operation of the resin adhesive 21 is completed.
Then, after curing for a predetermined time (for example, 24 hours until the next day) until the injected resin adhesive 21 is cured and the side surface 4 and the side panel 12 of the existing water channel 2 are bonded, the support 16 is removed. The rehabilitation work is completed, and the rehabilitation channel 2A (FIG. 1) having the bottom surface 3A and the side surface 4A formed by the panel material 10 is completed.

以上の本実施形態によれば以下の効果がある。
(1)既存水路2の表面に接着層20を介して複数のパネル材10を取り付けることにより、既存水路2にパネル材10を一体化させる。従って、水が流れる面に既存水路2のコンクリート構造体が露出しないため、コンクリート構造体内の鋼材の露出や錆汁の漏出を抑えることができる。
According to the above embodiment, the following effects are obtained.
(1) The panel material 10 is integrated with the existing water channel 2 by attaching the plurality of panel materials 10 to the surface of the existing water channel 2 via the adhesive layer 20. Therefore, since the concrete structure of the existing water channel 2 is not exposed on the surface through which water flows, exposure of the steel material in the concrete structure and leakage of rust juice can be suppressed.

(2)パネル材10を平滑なレジンコンクリートで形成したので、更生水路2Aの表面の粗度を改善して、円滑な通水を確保できるうえに、部分補修する場合や、水路表面にコーティング膜を形成する場合に比べ、更生水路2Aの表面の外観を良好にできる。さらに、既存水路2の断面は若干縮小されるが、表面粗度が改善されるため、少なくとも従前の通水量を確保することができる。 (2) Since the panel material 10 is made of smooth resin concrete, the surface roughness of the rehabilitated water channel 2A can be improved to ensure smooth water flow, and in the case of partial repair or a coating film on the surface of the water channel The appearance of the surface of the rehabilitated water channel 2A can be improved compared to the case where is formed. Furthermore, although the cross section of the existing water channel 2 is slightly reduced, since the surface roughness is improved, at least the conventional water flow rate can be ensured.

(3)パネル材10と既存水路2の表面との間に樹脂系接着剤21を注入し、硬化させることで、接着層20が形成され、この接着層20を介してパネル材10が既存水路2の表面に接着されるので、接着層20を既存水路2の表面に形成した後にパネル材10を接着させたり、パネル材10の表面に接着シートなどにより接着層を形成した後に既存水路2の表面に貼り付けたりする必要がないため、作業手間を掛けずに更生作業を実施することができる。 (3) An adhesive layer 20 is formed by injecting a resin adhesive 21 between the panel material 10 and the surface of the existing water channel 2 and curing it, and the panel material 10 is connected to the existing water channel via the adhesive layer 20. 2 is adhered to the surface of the existing water channel 2 after the adhesive layer 20 is formed on the surface of the existing water channel 2 or the adhesive layer is formed on the surface of the panel material 10 with an adhesive sheet or the like. Since it is not necessary to attach the surface to the surface, the rehabilitation work can be carried out without taking time and effort.

(4)樹脂系接着剤21の注入、硬化により形成された接着層20を介してパネル材10を既存水路2の表面に接着したので、例えば気温の変動や地震等によりパネル材10と既存水路2との間に変位差が生じた場合でも、接着層20の弾力性により変位差を吸収することができるため、パネル材10にひび割れ等が生じることなく、通水性や外観を良好に維持させることができる。 (4) Since the panel material 10 is bonded to the surface of the existing water channel 2 through the adhesive layer 20 formed by the injection and curing of the resin-based adhesive 21, the panel material 10 and the existing water channel due to, for example, a change in temperature or an earthquake 2 can be absorbed by the elasticity of the adhesive layer 20 even when a displacement difference occurs between the panel member 10 and the panel material 10 without causing cracks, etc., and maintaining good water permeability and appearance. be able to.

(5)パネル材10の基本厚みを10mmとしたので、必要なパネル材10の強度を確保しつつ、更生水路2Aの断面積の減少率を低く抑えることができる。また、パネル材10の表面に凹凸10A〜10Cを形成し、さらにパネル材10の表面にショットブラスト等により粗面を形成することで、パネル材10と接着層20との間の接着力を高めることができるので、より強固かつ弾性的にパネル材10を既存水路2の表面に接着させることができる。 (5) Since the basic thickness of the panel material 10 is 10 mm, the reduction rate of the cross-sectional area of the rehabilitated water channel 2 </ b> A can be kept low while ensuring the necessary strength of the panel material 10. Moreover, the unevenness | corrugation 10A-10C is formed in the surface of the panel material 10, and also the adhesive force between the panel material 10 and the contact bonding layer 20 is raised by forming a rough surface by the shot blast etc. on the surface of the panel material 10. Therefore, the panel material 10 can be more firmly and elastically bonded to the surface of the existing water channel 2.

(6)パネル材10を底面パネル11、一対の側面パネル12、および一対の角部パネル13に分割して構成したので、各々のパネル材11,12,13が小型化され、容易に取り扱うことができるから、施工能率を向上できる。 (6) Since the panel material 10 is divided into the bottom panel 11, the pair of side panels 12, and the pair of corner panels 13, each panel material 11, 12, 13 is miniaturized and easily handled. Therefore, construction efficiency can be improved.

(7)角部パネル13を底面部13Aと側面部13Bで構成し、これらを可撓性を有したシート14で連結したので、既存水路2の底面3と側面4との交差角度に応じて、角部パネル13の底面部13Aと側面部13Bとの交差角度θを変更できるため、既存水路2の断面形状に関わらず共通の角部パネル13を用いることができ、部品の共通化を図って、パネル材10の製造効率を向上させることができる。 (7) Since the corner panel 13 is composed of the bottom surface portion 13A and the side surface portion 13B and these are connected by the flexible sheet 14, according to the intersection angle between the bottom surface 3 and the side surface 4 of the existing water channel 2 Since the crossing angle θ between the bottom surface portion 13A and the side surface portion 13B of the corner panel 13 can be changed, the common corner panel 13 can be used regardless of the cross-sectional shape of the existing water channel 2, and parts can be shared. Thus, the manufacturing efficiency of the panel material 10 can be improved.

(8)樹脂系接着剤21として粘度が小さい不飽和ポリエステル樹脂を用いたので、パネル材10と既存水路2の表面との間に樹脂系接着剤21を注入する際に、空隙が生じず、接着層20を良好に形成することができる。また、注入する樹脂系接着剤21の粘度が小さいので、注入作業時において、樹脂系接着剤21がパネル材10と既存水路2の表面との隙間にくまなく流れ込んでいくため、例えば注入位置が1箇所であっても、広い範囲に樹脂系接着剤21を注入することができ、注入作業を効率よく実施することができる。 (8) Since an unsaturated polyester resin having a low viscosity is used as the resin adhesive 21, no gap is generated when the resin adhesive 21 is injected between the panel material 10 and the surface of the existing water channel 2. The adhesive layer 20 can be formed satisfactorily. Further, since the viscosity of the resin adhesive 21 to be injected is small, the resin adhesive 21 flows through the gap between the panel material 10 and the surface of the existing water channel 2 during the injection operation. Even at one location, the resin-based adhesive 21 can be injected over a wide range, and the injection operation can be carried out efficiently.

(9)樹脂系接着剤21に用いた不飽和ポリエステル樹脂は、硬化後においても優れた弾力性を有するので、パネル材10と既存水路2との間生じる変位差を良好に吸収することができ、パネル材10の接着層20から剥離や、ひび割れ等をより確実に防止することができる。すなわち、パネル材の表面に接着シートを貼り付ける方法では、接着シート自体の剛性が高くなるため、パネル材が比較的剛に接着されてしまい、既存水路とパネル材との間の変位差を吸収することが困難であった。このため、接着シートを用いた補修構造では、パネル材にひび割れが発生する可能性があり、補修水路の表面の平滑さを維持させ、美観を保持させるという本願の目的が必ずしも十分に達成できない。これに対して、本願の樹脂系接着剤21を注入する更生構造では、樹脂系接着剤21の粘性を小さくするとともに、優れた伸縮性(弾力性)を有する接着剤を用いることができるので、パネル材10のひび割れを防止して、更生水路2Aの表面を平滑に、かつ外観良好に維持させることができ、本願の目的を達成できる。 (9) Since the unsaturated polyester resin used for the resin-based adhesive 21 has excellent elasticity even after curing, the displacement difference generated between the panel material 10 and the existing water channel 2 can be favorably absorbed. Further, peeling, cracking, and the like from the adhesive layer 20 of the panel material 10 can be more reliably prevented. That is, in the method of sticking the adhesive sheet on the surface of the panel material, the rigidity of the adhesive sheet itself is increased, so that the panel material is relatively rigidly bonded, and the displacement difference between the existing water channel and the panel material is absorbed. It was difficult to do. For this reason, in the repair structure using the adhesive sheet, the panel material may be cracked, and the object of the present application of maintaining the smoothness of the surface of the repair channel and maintaining the aesthetic appearance cannot be achieved sufficiently. On the other hand, in the rehabilitation structure for injecting the resin adhesive 21 of the present application, the viscosity of the resin adhesive 21 can be reduced and an adhesive having excellent stretchability (elasticity) can be used. The crack of the panel material 10 can be prevented, the surface of the rehabilitated water channel 2A can be maintained smoothly and with a good appearance, and the object of the present application can be achieved.

なお、本発明は前記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。
例えば、前記実施形態では、底面3に対して側面4が鈍角となる交差角度で交差した既存水路2の更生構造、およびその施工方法について説明したが、これに限らず、底面3に対して側面4が直角に交差する水路に対しても本発明の更生構造、およびその施工方法は適用可能である。また、天井部分を有するボックスカルバート等の水路に対しても本発明を適用することができ、その場合には、天井部分に天井パネルを設置するような構成も採用できる。
It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
For example, in the said embodiment, although the rehabilitation structure of the existing water channel 2 and the construction method which cross | intersected the crossing angle in which the side surface 4 becomes an obtuse angle with respect to the bottom face 3, and the construction method were not restricted to this, The rehabilitation structure of the present invention and its construction method can also be applied to water channels where 4 intersects at right angles. In addition, the present invention can be applied to a water channel such as a box culvert having a ceiling portion, and in that case, a configuration in which a ceiling panel is installed on the ceiling portion can also be adopted.

また、前記実施形態では、パネル材10を底面パネル11、一対の側面パネル12、および一対の角部パネル13に分割して構成したが、これに限らず、断面略コ字形に一体成形したパネル材を用いてもよい。
また、前記実施形態では、樹脂系接着剤21に不飽和ポリエステル樹脂を用いたが、これに限らず、アクリル樹脂や、ウレタン樹脂、ビニールエステル樹脂、エポキシ樹脂等を利用してもよい。
Moreover, in the said embodiment, although the panel material 10 was divided | segmented and comprised in the bottom face panel 11, a pair of side panel 12, and a pair of corner | angular part panel 13, it is not restricted to this, The panel integrally formed by cross-sectional substantially U shape A material may be used.
Moreover, in the said embodiment, although the unsaturated polyester resin was used for the resin-type adhesive agent 21, you may utilize not only this but an acrylic resin, a urethane resin, a vinyl ester resin, an epoxy resin, etc.

また、前記実施形態では、水路の通水方向Aに関して、パネル材10や各パネル11,12,13が他のパネル材10等に接着により連結されるものとしたが、この方法では、カーブした水路の場合、パネル材10等の長さ寸法(例えば、2m)に対応した辺を有する多角形状に水路が形成されてしまう。このような一辺が長い多角形状にパネル材を配置してしまうと、パネル材と既存水路の側面との間に、非常に大きな隙間が生じるので、その隙間に注入する接着剤が大量に必要になってしまい、コスト増の原因になると同時に、更生後の水路の通水に有効な断面が小さくなってしまうという不都合も生じる。
このため、パネル材10の長さ寸法を短くして、カーブに沿った曲がりを滑らかにする方法が考えられるが、この方法だとパネル材の部品点数が多くなり、運搬や設置、接合等の作業に多大な手間を要してしまう。このような作業手間を掛けずに、カーブに沿った滑らかな水路を構築できるパネル材として、図15に示すパネル材30を前記実施形態の更生構造1に適用してもよい。
Moreover, in the said embodiment, regarding the water flow direction A, the panel material 10 and each panel 11, 12, and 13 shall be connected with another panel material 10 etc. by adhesion | attachment, However, In this method, it curved. In the case of a water channel, the water channel is formed in a polygonal shape having sides corresponding to the length dimension (for example, 2 m) of the panel material 10 or the like. If the panel material is arranged in such a long polygonal shape, a very large gap is generated between the panel material and the side surface of the existing water channel, so a large amount of adhesive is required to be injected into the gap. As a result, the cost is increased, and at the same time, there is a disadvantage that a cross section effective for water passage through the rehabilitated water channel is reduced.
For this reason, a method of shortening the length of the panel material 10 and smoothing the bend along the curve can be considered, but this method increases the number of parts of the panel material, and transport, installation, joining, etc. A lot of work is required for the work. The panel material 30 shown in FIG. 15 may be applied to the rehabilitation structure 1 of the above-described embodiment as a panel material capable of constructing a smooth water channel along a curve without taking such labor.

図15において、パネル材30は、前記実施形態と同様にレジンコンクリート製の3つのパネル部31と、可撓性を有する樹脂製シートやガラス繊維製の連結シート部32とを備えて構成されている。そして、パネル材30は、通水方向Aに並べられた3つのパネル部31が連結シート部32で連結され、連結シート部32位置において図15中、二点鎖線で示すように折り曲げ可能に構成されている。さらに、連結シート部32からは樹脂系接着剤が漏れ出さないようになっており、パネル材30を既存水路に設置し、他のパネル材と接続するだけでよく、パネル材30のパネル部31同士を接着する必要はない。従って、特別な作業手間を掛けずに、前記実施形態と略同様な作業によって、カーブした水路の更生が可能になり、カーブに沿った滑らかな曲率を有する水路表面を形成することができる。   In FIG. 15, the panel member 30 includes three panel portions 31 made of resin concrete and a connecting sheet portion 32 made of a flexible resin sheet or glass fiber, as in the above embodiment. Yes. And the panel material 30 is comprised so that the three panel parts 31 arranged in the water flow direction A are connected by the connection sheet | seat part 32, and can be bent as shown by the dashed-two dotted line in FIG. Has been. Further, the resin-based adhesive does not leak from the connecting sheet portion 32. The panel member 30 may be installed in an existing water channel and connected to another panel member. There is no need to bond them together. Therefore, the curved waterway can be rehabilitated by substantially the same work as that of the above-described embodiment without any special work, and a waterway surface having a smooth curvature along the curve can be formed.

図16(A),(B)には、既存水路2の表面の劣化が激しく、大きな凹凸が生じている場合の更生構造が示されている。
図16において、既存水路2は、その側面4の劣化が激しく大きな凹凸が生じている。このような既存水路2に前記実施形態の更生構造1をそのまま適用すると、側面4の凹凸部分に大量の樹脂系接着剤21が注入されてしまうため、材料コストが嵩んでしまう。このため、図16の更生構造では、図16(A)の左側に示すように、パネル材10の側面パネル12における既存水路2の側面4側に所定厚さ寸法(例えば、10mm)の発泡スチロール17を貼り付けておく。そして、この側面パネル12を既存水路2の側面4に対向して設置し、図16(A)の右側に示すように、側面4と発泡スチロール17との間の隙間にモルタル18を打設する。これにより、側面4の凹凸部分にモルタル18が充填される。
FIGS. 16A and 16B show a rehabilitation structure in the case where the surface of the existing water channel 2 is greatly deteriorated and large irregularities are generated.
In FIG. 16, the existing water channel 2 has a large unevenness in which the side surface 4 is greatly deteriorated. If the rehabilitation structure 1 of the said embodiment is applied as it is to such an existing water channel 2, since a lot of resin adhesives 21 will be inject | poured into the uneven | corrugated | grooved part of the side surface 4, material cost will increase. Therefore, in the rehabilitation structure of FIG. 16, as shown on the left side of FIG. 16A, the foamed polystyrene 17 having a predetermined thickness (for example, 10 mm) is provided on the side surface 4 side of the existing water channel 2 in the side panel 12 of the panel material 10. Paste. And this side panel 12 is installed facing the side 4 of the existing water channel 2, and the mortar 18 is driven in the clearance gap between the side 4 and the polystyrene foam 17 as shown to the right side of FIG. 16 (A). Thereby, the mortar 18 is filled in the uneven portion of the side surface 4.

そして、モルタル18が硬化した後に、図16(B)の左側に示すように、発泡スチロール17を溶かすことができる溶剤19を、側面パネル12とモルタル18との間に注入して、発泡スチロール17を溶かし、図16(B)の右側に示すように、発泡スチロール17が溶けた後の隙間に樹脂系接着剤21を注入することで、樹脂系接着剤21およびモルタル18を介して側面パネル12が既存水路2の側面4に取り付けられることになる。
なお、樹脂系接着剤21に不飽和ポリエステル樹脂等の発泡スチロール17を溶かす性質を有する樹脂を用いる場合には、前記溶剤19を省略して、樹脂系接着剤21を発泡スチロール17部分に注入し、発泡スチロール17を溶かしながら、同時に接着剤の充填を行うことができる。
以上のような更生構造およびその施工方法を採用することで、既存水路2の表面の劣化が激しく、大きな凹凸が生じている場合であっても、樹脂系接着剤の使用量を抑えて、コストの増加を防止することができる。
Then, after the mortar 18 is cured, as shown on the left side of FIG. 16 (B), a solvent 19 that can dissolve the foamed polystyrene 17 is injected between the side panel 12 and the mortar 18 to dissolve the foamed polystyrene 17. As shown on the right side of FIG. 16 (B), by injecting the resin-based adhesive 21 into the gap after the foamed polystyrene 17 is melted, the side panel 12 is connected to the existing water channel via the resin-based adhesive 21 and the mortar 18. It will be attached to the side surface 4 of 2.
In addition, when using resin which has the property to melt | dissolve the polystyrene foams 17, such as unsaturated polyester resin, in the resin adhesive 21, the said solvent 19 is abbreviate | omitted, the resin adhesive 21 is inject | poured into the foam polystyrene 17 part, and a foam polystyrene is used. The adhesive can be filled at the same time as 17 is melted.
By adopting the rehabilitation structure and its construction method as described above, even if the surface of the existing waterway 2 is severely degraded and large irregularities are produced, the amount of resin adhesive used can be reduced and the cost can be reduced. Can be prevented from increasing.

本発明は、農業用の用水路や、工業用の用水路等の更生に広く利用可能である。   The present invention can be widely used for rehabilitation of agricultural irrigation channels, industrial irrigation channels, and the like.

本発明の実施形態に係る水路の更生構造を示す断面図である。It is sectional drawing which shows the rehabilitation structure of the waterway which concerns on embodiment of this invention. 前記更生構造に用いる底面パネルを示す正面図および各側面図である。It is the front view and each side view which show the bottom panel used for the said rehabilitation structure. 前記更生構造に用いる側面パネルを示す正面図および各側面図である。It is the front view and each side view which show the side panel used for the said rehabilitation structure. 前記更生構造に用いる角部パネルを示す正面図および各側面図である。It is the front view and each side view which show the corner | angular panel used for the said rehabilitation structure. (A),(B)は、前記角部パネルの設置状態を示す断面図である。(A), (B) is sectional drawing which shows the installation state of the said corner | angular panel. 前記実施形態の施工方法の手順を説明する断面図である。It is sectional drawing explaining the procedure of the construction method of the said embodiment. 図6に続く施工方法の手順を説明する断面図である。It is sectional drawing explaining the procedure of the construction method following FIG. 図7に続く施工方法の手順を説明する断面図である。It is sectional drawing explaining the procedure of the construction method following FIG. 図8に続く施工方法の手順を説明する断面図である。It is sectional drawing explaining the procedure of the construction method following FIG. 図9に続く施工方法の手順を説明する断面図である。It is sectional drawing explaining the procedure of the construction method following FIG. 図10に続く施工方法の手順を説明する断面図である。It is sectional drawing explaining the procedure of the construction method following FIG. 図11に続く施工方法の手順を説明する断面図である。It is sectional drawing explaining the procedure of the construction method following FIG. 図12に続く施工方法の手順を説明する断面図である。It is sectional drawing explaining the procedure of the construction method following FIG. (A)〜(C)は、前記更生構造に用いるパネル材を示す斜視図である。(A)-(C) are perspective views which show the panel material used for the said rehabilitation structure. 本発明の変形例に係るパネル材を示す側面図である。It is a side view which shows the panel material which concerns on the modification of this invention. (A),(B)は、本発明の変形例に係る更生構造を示す断面図である。(A), (B) is sectional drawing which shows the rehabilitation structure which concerns on the modification of this invention.

符号の説明Explanation of symbols

2 既存水路
3 底面
4 側面
10 パネル材
10A ガラス繊維(凹凸)
10B 突起(凹凸)
10C 鋼材(凹凸)
11 底面パネル
12 側面パネル
13 角部パネル
14 シート(面材)
20 接着層
21 樹脂系接着剤
2 Existing water channel 3 Bottom surface 4 Side surface 10 Panel material 10A Glass fiber (unevenness)
10B Protrusion (Roughness)
10C steel (unevenness)
11 Bottom panel 12 Side panel 13 Corner panel 14 Sheet (face material)
20 Adhesive layer 21 Resin adhesive

Claims (4)

既存水路の表面のうち少なくとも水中となる部分を覆う複数のレジンコンクリート製のパネル材と、
これらパネル材と前記既存水路の表面との間に設けられた接着層とを備え、
前記接着層は、前記パネル材と前記既存水路の表面との間に注入し、硬化させた樹脂系接着剤で構成され、硬化後において40%以上の伸び率を有して形成され、
前記既存水路と前記パネル材との間に当該パネル材の面に沿った方向の相対変位が生じた場合には、前記接着層弾性変形することによって前記相対変位に前記パネル材が追従可能に構成されていることを特徴とする水路の更生構造。
A plurality of resin concrete panel materials covering at least a portion of the surface of the existing water channel that is underwater;
An adhesive layer provided between these panel materials and the surface of the existing water channel,
The adhesive layer is composed of a resin adhesive that is injected between the panel material and the surface of the existing water channel and cured, and is formed with an elongation of 40% or more after curing.
If the direction of the relative displacement along the surface of the panel material occurs, the adhesive layer is the panel material before Symbol phase versus displacement by elastic deformation follow between the existing water channel and the panel member Rehabilitation structure of a waterway characterized by being configured.
請求項1に記載の水路の更生構造において、
前記パネル材は、プレス加工により成形され、厚みが8mm〜15mmであり、前記既存水路の表面と対向する面に粗面または凹凸が形成されていることを特徴とする水路の更生構造。
In the rehabilitation structure of the waterway according to claim 1,
The panel material is formed by press working, has a thickness of 8 mm to 15 mm, and has a rough surface or unevenness formed on a surface facing the surface of the existing water channel.
請求項1または請求項2に記載の水路の更生構造において、
前記パネル材は、前記既存水路の通水方向に交差する断面に関して、当該既存水路の底面を覆う底面パネルと、当該既存水路の二側面を覆う一対の側面パネルと、これらの底面パネルおよび側面パネルを連結する一対の角部パネルとを備えて構成されていることを特徴とする水路の更生構造。
In the rehabilitation structure of a water channel according to claim 1 or claim 2,
The panel material includes a bottom panel that covers a bottom surface of the existing water channel, a pair of side panels that cover two side surfaces of the existing water channel, and a bottom panel and a side panel of the existing water channel with respect to a cross section that intersects the water flow direction of the existing water channel. A rehabilitation structure for a water channel comprising a pair of corner panels that connect the two.
既存水路の表面のうち少なくとも水中となる部分を複数のレジンコンクリート製のパネル材で覆い、これらパネル材と前記既存水路の表面との間に設けた接着層によって当該既存水路の表面に当該パネル材を接着する水路更生構造の施工方法であって、
前記パネル材は、前記既存水路の通水方向に交差する断面に関して、当該既存水路の底面を覆う底面パネルと、当該既存水路の二側面を覆う一対の側面パネルと、これらの底面パネルおよび側面パネルを連結する一対の角部パネルと、を備えて構成されており、
既存水路から水を抜き取り、この既存水路の表面のうち少なくとも水中となる部分に、複数のレジンコンクリート製のパネル材を当該既存水路の表面に所定の隙間を介して対向させて配置し、
前記パネル材の配置に際して、
先ず、前記既存水路の底面および側面の交差部にスペーサを介して前記角部パネルを配置するとともに、前記底面パネルを前記角部パネルの側端部に接着して前記既存水路の底面に配置し、これに続いて、前記側面パネルを前記角部パネルの上端部に接着して前記既存水路の側面に配置し、
硬化前において0.2〜0.6Pa・sの粘度を有する樹脂系接着剤を準備し、この樹脂系接着剤を前記パネル材と既存水路の表面との隙間に注入し、注入した樹脂系接着剤を硬化させて40%以上の伸び率を有する接着層を形成し、この接着層のみを介して前記パネル材を前記既存水路の表面に接着させることを特徴とする水路更生構造の施工方法。
Cover at least a portion of the surface of the existing water channel that is submerged with a plurality of resin concrete panel materials, and the panel material on the surface of the existing water channel by an adhesive layer provided between the panel material and the surface of the existing water channel It is a construction method of a waterway rehabilitation structure that bonds
The panel material includes a bottom panel that covers a bottom surface of the existing water channel, a pair of side panels that cover two side surfaces of the existing water channel, and a bottom panel and a side panel of the existing water channel with respect to a cross section that intersects the water flow direction of the existing water channel. A pair of corner panels connecting the two,
Water is extracted from the existing water channel, and a plurality of resin concrete panel materials are arranged opposite to the surface of the existing water channel with a predetermined gap in at least a portion of the surface of the existing water channel that is underwater,
When arranging the panel material,
First, the corner panel is disposed through a spacer at the intersection of the bottom surface and the side surface of the existing water channel, and the bottom panel is bonded to a side edge of the corner panel and disposed on the bottom surface of the existing water channel. Subsequently, the side panel is bonded to the upper end of the corner panel and placed on the side of the existing water channel,
Prepare a resin adhesive having a viscosity of 0.2 to 0.6 Pa · s before curing, inject this resin adhesive into the gap between the panel material and the surface of the existing water channel, and inject the resin adhesive A method for constructing a channel rehabilitation structure comprising curing an agent to form an adhesive layer having an elongation of 40% or more, and adhering the panel material to the surface of the existing water channel only through the adhesive layer.
JP2003355982A 2003-10-16 2003-10-16 Rehabilitation structure of waterway and its construction method Expired - Lifetime JP4844863B2 (en)

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KR200452081Y1 (en) 2009-02-18 2011-01-28 이동순 Formwork panel for wall construction in ecosystem protection channel

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