JP2017075474A - Insertion method of reinforcing material and reinforcing material - Google Patents
Insertion method of reinforcing material and reinforcing material Download PDFInfo
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- JP2017075474A JP2017075474A JP2015202930A JP2015202930A JP2017075474A JP 2017075474 A JP2017075474 A JP 2017075474A JP 2015202930 A JP2015202930 A JP 2015202930A JP 2015202930 A JP2015202930 A JP 2015202930A JP 2017075474 A JP2017075474 A JP 2017075474A
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- 239000012779 reinforcing material Substances 0.000 title claims abstract description 49
- 238000012966 insertion method Methods 0.000 title abstract description 4
- 239000004033 plastic Substances 0.000 claims abstract description 35
- 229920003023 plastic Polymers 0.000 claims abstract description 35
- 238000003780 insertion Methods 0.000 claims abstract description 27
- 230000037431 insertion Effects 0.000 claims abstract description 27
- 239000004744 fabric Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 19
- 239000000945 filler Substances 0.000 claims description 17
- 238000005452 bending Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 239000002759 woven fabric Substances 0.000 description 6
- 239000003566 sealing material Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 238000009958 sewing Methods 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
Description
電柱等の中空柱状の筒状物に挿入する補強材に関する技術を、以下に開示する。 The technique regarding the reinforcing material inserted in hollow columnar cylinders, such as an electric pole, is disclosed below.
既存の電柱を耐震等の目的で内部から補強する場合、特許文献１に開示されている類の補強材とこれを使用した補強方法が用いられる。この補強方法では、電柱の上端部から補強シートを挿入して電柱内に配置し、当該補強シートの内側に樹脂材料を含んだ流動性の充填材を注入して固化させる。 When reinforcing an existing utility pole from the inside for the purpose of earthquake resistance or the like, the type of reinforcing material disclosed in Patent Document 1 and a reinforcing method using the same are used. In this reinforcing method, a reinforcing sheet is inserted from the upper end portion of the electric pole and disposed in the electric pole, and a fluid filler containing a resin material is injected and solidified inside the reinforcing sheet.
電柱上端部から作業しなければならないという、特許文献１に開示される補強方法の弱点を補う目的で、特許文献２に開示される補強材と補強方法も提案されている。この方法では、電柱の地面近くに開けた挿入開口から、筒状に形成された補強シートを可撓性の中空パイプで押し上げて挿入し、保持手段で電柱内に保持しておいて充填材を供給する。 In order to compensate for the weakness of the reinforcing method disclosed in Patent Document 1 that work must be performed from the upper end of the utility pole, a reinforcing material and a reinforcing method disclosed in Patent Document 2 have also been proposed. In this method, a reinforcing sheet formed in a cylindrical shape is pushed up and inserted by a flexible hollow pipe from an insertion opening opened near the ground of the utility pole, and is held in the utility pole by a holding means, and the filler is added. Supply.
特許文献２に開示されるような補強方法は、補強シートを押し上げる線材やパイプ、そして電柱内定位置に補強シートを保持する保持手段が必要であり、作業に使用する道具が多い。この点に鑑みて、本発明は、特許文献１の上記弱点を克服可能であると共に、電柱等の筒状物への挿入作業がより容易である補強材と該補強材を使用した挿入方法を提案する。 The reinforcing method as disclosed in Patent Document 2 requires wire rods and pipes that push up the reinforcing sheet, and holding means for holding the reinforcing sheet at a fixed position in the utility pole, and many tools are used for work. In view of this point, the present invention provides a reinforcing material that can overcome the above-described weaknesses of Patent Document 1 and that can be more easily inserted into a cylindrical object such as a utility pole, and an insertion method using the reinforcing material. suggest.
当課題に対して提案する補強材は、筒状に形成した折り畳み可能な織物シートからなり、該筒状にした織物シートにおいてプラスチック加工帯が軸方向へ延伸していて、このプラスチック加工帯が可撓性で且つ当該織物シートを屹立させる強度を備えることを特徴とする。 The reinforcing material proposed for this problem consists of a foldable woven fabric sheet formed in a cylindrical shape, and the plastic processing band extends in the axial direction in the cylindrical woven sheet, and this plastic processing band is acceptable. It is flexible and has the strength to stand up the textile sheet.
この補強材を電柱等の筒状物へ挿入する方法は、少なくとも、前記プラスチック加工帯の無い部位で前記織物シートを折り曲げて当該補強材を折り畳む作業と、この折り畳んだ補強材を、筒状物に開けた挿入開口から該筒状物の内部へ前記プラスチック加工帯の可撓性を利用して挿入し、そして前記プラスチック加工帯の強度を利用して当該挿入した補強材を前記筒状物内で屹立させる作業と、で行うことができる。このようにして挿入し屹立させた補強材に対しては、当該補強材の前記織物シートの内側に充填材を注入して固化する作業を実施することができる。 The method of inserting the reinforcing material into a cylindrical object such as a utility pole is to fold the reinforcing material by folding the fabric sheet at least at a site without the plastic processing band, and the folded reinforcing material to the cylindrical object. The plastic processing band is inserted into the cylindrical body through the insertion opening opened in the cylindrical section using the flexibility of the plastic processing band, and the inserted reinforcing material is inserted into the cylindrical body using the strength of the plastic processing band. It can be done with the work of standing up with. For the reinforcing material inserted and erected in this manner, an operation of injecting a filler into the inside of the fabric sheet of the reinforcing material and solidifying it can be performed.
上記提案に係る補強材とその挿入方法によれば、筒状物に補強材を挿入する作業に、補強材以外の特殊な治具を必要としない。しかも、この挿入作業は、特許文献２と同様、地面近くの挿入開口から行うことができる。したがって、従来に比べて格段に作業が容易である。 According to the reinforcing material and the method of inserting the reinforcing material according to the above proposal, a special jig other than the reinforcing material is not required for the operation of inserting the reinforcing material into the cylindrical object. Moreover, this insertion work can be performed from the insertion opening near the ground, as in Patent Document 2. Therefore, the work is much easier than before.
本実施形態の補強材１０は、図１に示すように、樹脂製の経糸と緯糸から織られた長方形の織物シート１１から形成される。織物シート１１の長辺に沿った縁部１１ａは、織物シート１１を筒状にしたときに重ね合わせられる。重ね合わせた縁部１１ａは、縫合又は接着によって互いに接合される。この織物シート１１の表面には多数のプラスチック加工帯１２が並列に形成されていて、本実施形態の場合、各プラスチック加工帯１２は、長辺方向（すなわち筒状にしたときの軸方向）に延伸している。プラスチック加工帯１２は、例えばＦＲＰ（繊維強化プラスチック）の帯であり、後述する電柱への挿入時には湾曲可能なように可撓性であると共に、該挿入時の挿入抵抗に耐え且つ挿入後に織物シート１１を補助無しで屹立させるのに十分な強度（耐屈曲性）を備える。なお、プラスチック加工帯１２として、織物シート１１の長辺方向全長にわたって延伸する例を示してあるが、必要な強度を得られる限り、全長より短くてもよい。 As shown in FIG. 1, the reinforcing member 10 of the present embodiment is formed from a rectangular fabric sheet 11 woven from resin warps and wefts. The edge part 11a along the long side of the fabric sheet 11 is overlapped when the fabric sheet 11 is formed into a cylindrical shape. The overlapped edges 11a are joined to each other by sewing or adhesion. A large number of plastic processing bands 12 are formed in parallel on the surface of the fabric sheet 11, and in the case of this embodiment, each plastic processing band 12 is in the long side direction (that is, the axial direction when it is formed into a cylindrical shape). Stretched. The plastic processing band 12 is, for example, a band of FRP (fiber reinforced plastic), is flexible so that it can be bent when inserted into a power pole, which will be described later, and withstands the insertion resistance at the time of insertion and is a woven fabric sheet after insertion. It has sufficient strength (flexibility) to allow 11 to stand without assistance. In addition, although the example extended | stretched over the long side direction full length of the fabric sheet 11 is shown as the plastic processing belt | band | zone 12, as long as required intensity | strength is obtained, you may be shorter than full length.
本実施形態において織物シート１１は、樹脂製であることからある程度の弾性をもつので、図２に示すように、長辺の縁部１１ａを互いに接合することによって筒状に形成される。筒状になった補強材１０の軸方向全長は、挿入先の電柱の全長におおよそ匹敵する。織物シート１１を筒状にすることで、プラスチック加工帯１２は、織物シート１１の外周面（又は内周面、もしくは外周面と内周面の両方）に等間隔で、筒の軸方向に延伸する。筒状にした織物シート１１の上下端は、本実施形態の場合、同材質の織物部材１３を縫合又は接着することで封止される。 In this embodiment, since the fabric sheet 11 is made of resin and has a certain degree of elasticity, it is formed in a cylindrical shape by joining the long side edges 11a to each other as shown in FIG. The overall axial length of the reinforcing member 10 in the form of a cylinder is approximately equal to the overall length of the insertion pole. By making the woven fabric sheet 11 into a cylindrical shape, the plastic processing band 12 extends in the axial direction of the cylinder at equal intervals on the outer peripheral surface (or the inner peripheral surface, or both the outer peripheral surface and the inner peripheral surface) of the woven fabric sheet 11. To do. In the case of this embodiment, the upper and lower ends of the tubular fabric sheet 11 are sealed by stitching or bonding the fabric members 13 made of the same material.
筒状にした織物シート１１の中には、軸方向に延伸するシートホース１４が、図３に示すように（図２においては見難さを回避するために図示を省略してある）、充填材の注入のために配置される。シートホース１４は、例えば、織物シート１１と同じ樹脂製の経糸及び緯糸から織られたホースであり、織物シート１１と同様の柔軟性をもつ。シートホース１４の周面には、軸方向へ一直線上に並べて注入口１４ａが多数開けられており、充填材の注入時には、一番下の注入口１４ａから順番に充填材の注ぎ出しに使われていく。このシートホース１４を有することにより、前述した特許文献２に記載された中空パイプと同等の効果を得ることができる（引用文献２における中空パイプに関する記載内容がここに引用される）。 A sheet hose 14 extending in the axial direction is filled in the woven fabric sheet 11 as shown in FIG. 3 (not shown in FIG. 2 to avoid difficulty in viewing). Arranged for material injection. The sheet hose 14 is, for example, a hose woven from the same resin warp and weft as the woven sheet 11 and has the same flexibility as the woven sheet 11. A large number of inlets 14a are opened on the circumferential surface of the seat hose 14 in a straight line in the axial direction, and are used for pouring out the fillers in order from the lowest inlet 14a when the fillers are injected. To go. By having this seat hose 14, the effect equivalent to the hollow pipe described in patent document 2 mentioned above can be acquired (the description content about the hollow pipe in cited reference 2 is quoted here).
シートホース１４の上端及び下端は、織物シート１１の上下端に設けられた織物部材１３に対して、縫合又は接着により接合される。そして、このシートホース１４の軸方向中間部位（後述の電柱Ｐに開けられる挿入開口Ｐａに相当する部位）に、充填材の注入ホースＨを外から差し込むための袖部１５が、シートホース１４と連通させて形成されている。袖部１５は、シートホース１４と同材質で、縫合か接着によりシートホース１４に接続され、シートホース１４から軸方向と交差する方向へ突出する。袖部１５の先端口は、結束紐又は結束バンド等の結束具１５ａで巾着のように絞り込んで塞ぐことができるように形成されている（図３（Ｂ））。 The upper end and the lower end of the sheet hose 14 are joined to the fabric member 13 provided at the upper and lower ends of the fabric sheet 11 by sewing or adhesion. A sleeve portion 15 for inserting a filler injection hose H from the outside into an axially intermediate portion of the seat hose 14 (a portion corresponding to an insertion opening Pa opened in a power pole P described later) It is formed in communication. The sleeve portion 15 is made of the same material as the seat hose 14, is connected to the seat hose 14 by sewing or bonding, and projects from the seat hose 14 in a direction intersecting the axial direction. The front end of the sleeve 15 is formed so that it can be closed and closed like a purse with a binding tool 15a such as a binding string or a binding band (FIG. 3B).
プラスチック加工帯１２の間において織物シート１１に切り込み１１ｂを入れてあり、この切り込み１１ｂを通して袖部１５が外へ導き出される。切り込み１１ｂの部分には、織物シート１１の内側から巾着封止材１６をあてがってあり、袖部１５はこの巾着封止材１６を通って外へ突出する。巾着封止材１６は、その裾部１６ａが結合部１６ｂにより織物シート１１の内面に縫合又は接着されている。この巾着封止材１６の巾着口は、結束紐又は結束バンド等の結束具１６ｃで絞り込んで塞ぐことができる。巾着封止材１６は収縮性の素材で形成するのがよい。 A cut 11b is made in the fabric sheet 11 between the plastic processing bands 12, and the sleeve portion 15 is led out through the cut 11b. A drawstring sealant 16 is applied to the notch 11 b from the inside of the fabric sheet 11, and the sleeve 15 protrudes through the drawstring sealant 16. As for the drawstring sealing material 16, the skirt part 16a is stitch | sutured or adhere | attached on the inner surface of the fabric sheet 11 by the coupling | bond part 16b. The drawstring opening of the drawstring sealing material 16 can be closed by being squeezed with a binding tool 16c such as a binding string or a binding band. The drawstring sealing material 16 is preferably formed of a shrinkable material.
図３（Ｂ）の結束状態に示すとおり、施工時、注入ホースＨを差し込んだ袖部１５は、その先端口を結束具１５ａにより絞り込むことで注入ホースＨに密着して閉鎖される。そして、注入ホースＨを差し込んだ袖部１５の上から巾着封止材１６の巾着口を結束具１６ｃにより絞り込むことで、袖部１５ごと巾着口が注入ホースＨに密着し、閉鎖される。 As shown in the binding state of FIG. 3 (B), the sleeve 15 into which the injection hose H is inserted is closed in close contact with the injection hose H by narrowing the tip end thereof with the binding tool 15a. And by narrowing down the purse opening of the purse sealing material 16 from the top of the sleeve part 15 into which the injection hose H is inserted by the binding tool 16c, the purse cover comes into close contact with the injection hose H together with the sleeve part 15.
以上の構成を有する補強材１０は、図４に示すように、織物シート１１においてプラスチック加工帯１２の無い部位を折り曲げて２つ折りに折り畳むことができ、この後、さらにプラスチック加工帯１２の無い部位を折り曲げて４つ折りに折り畳むことができる。４つ折り以上に折り畳むことで補強材１０は、プラスチック加工帯１２どうしが重なったプラスチック棒のように細身化する。この折り畳み作業は、挿入現場への搬送前に行ってもよいし、挿入現場で行ってもよい。折り畳んだ補強材１０は、プラスチック加工帯１２の可撓性を利用してロール状に丸めて搬送することができる。 As shown in FIG. 4, the reinforcing member 10 having the above configuration can be folded into a folded portion by folding a portion without the plastic processing band 12 in the woven fabric sheet 11, and thereafter, a portion without the plastic processing band 12. Can be folded into four. By folding it into four or more folds, the reinforcing member 10 becomes thin like a plastic rod in which the plastic processing bands 12 overlap each other. This folding work may be performed before transporting to the insertion site, or may be performed at the insertion site. The folded reinforcing material 10 can be rolled and transported using the flexibility of the plastic processing band 12.
折り畳み作業で折り畳んだ補強材１０は、次のようにして筒状物としての電柱Ｐに挿入される。まず、地面に立ててある既存の電柱Ｐの側部において地面Ｇの近くに、長軸を上下方向にした長円形の挿入開口Ｐａを開ける。 The reinforcing material 10 folded by the folding work is inserted into the utility pole P as a cylindrical object as follows. First, an oval insertion opening Pa having a long axis in the vertical direction is opened near the ground G at the side of the existing utility pole P standing on the ground.
図５（Ａ）に示すように、最初に電柱Ｐの下方へ向けて補強材１０を挿入する。折り畳んで細身化し、一例としてロール状に丸めておいた補強材１０は、プラスチック加工帯１２の可撓性を利用して、その先端から挿入開口Ｐａを通し電柱Ｐ内部へ挿入することができる。この挿入時、プラスチック加工帯１２が可撓性なので、補強材１０は挿入開口Ｐａを通った後に下向きに湾曲して挿入可能であり、且つ、プラスチック加工帯１２が挿入抵抗に耐える強度をもつので、補強材１０は屈曲することなく最後まで挿入される。 As shown in FIG. 5A, the reinforcing material 10 is first inserted downward of the utility pole P. The reinforcing material 10 that is folded and thinned and rolled into a roll shape as an example can be inserted into the inside of the utility pole P from the tip thereof through the insertion opening Pa by utilizing the flexibility of the plastic processing band 12. Since the plastic processing band 12 is flexible at the time of insertion, the reinforcing member 10 can be inserted by bending downward after passing through the insertion opening Pa, and the plastic processing band 12 has a strength that can withstand insertion resistance. The reinforcing material 10 is inserted to the end without bending.
電柱下方への挿入作業が終わった補強材１０は、図５（Ｂ）に示すように、電柱Ｐから外へ出ている部分のロール状態を解く。そして、プラスチック加工帯１２の可撓性を利用して、電柱Ｐから外へ出ている部分を湾曲させることで反対側の端部を挿入Ｐａから差し入れ、今度は電柱Ｐの上方へ向け補強材１０を挿入していく。この挿入時、プラスチック加工帯１２が可撓性なので、挿入開口Ｐａを通った後に上向きに湾曲して挿入可能であり、且つ、プラスチック加工帯１２が挿入抵抗に耐える強度をもつので、補強材１０は屈曲することなく最後まで挿入される。 The reinforcing member 10 that has been inserted into the lower part of the utility pole unravels the rolled state of the portion that has gone out from the utility pole P, as shown in FIG. Then, by using the flexibility of the plastic processing band 12, the opposite end is inserted from the insertion Pa by curving the part protruding from the utility pole P, and this time the reinforcing material is directed upward of the utility pole P. 10 will be inserted. At the time of this insertion, since the plastic processing band 12 is flexible, the plastic processing band 12 can be inserted by being curved upward after passing through the insertion opening Pa, and the plastic processing band 12 has the strength to withstand the insertion resistance. Is inserted to the end without bending.
挿入作業の終わった補強材１０は、織物シート１１のもつ弾性で自然に筒状に開き、且つプラスチック加工帯１２の強度により、電柱Ｐの中で屈曲することなく、補助具無しで屹立する。そして、電柱Ｐ内に屹立させた当該補強材１０に対し、袖部１５を利用して、シートホース１５から織物シート１１の内側に充填材を注入する。充填材を注入する注入ホースＨは、袖部１５に差し入れ、そして結束具１５ａを絞り込むことで袖部１５の先端口を閉鎖した上に、結束具１６ｃを絞り込むことで巾着封止材１６の巾着口を閉鎖することで、固定される。注入ホースＨを固定後、図示せぬポンプから充填材を注入すると、最初にシートホース１４の一番下の注入口１４ａから充填材が補強材１０の内部へ注ぎ込まれる。そして、この注入口１４ａが塞がれる高さまで充填材が充填されると、今度はその上の注入口１４ａから充填材が注ぎ込まれる。以降、順次、下から上へ注入口１４ａが移りつつ一番上まで充填材が充填される。これにより、補強材１０が電柱Ｐの内面に張り付き、補強が施される。 The reinforcing material 10 after the insertion work is naturally opened in a cylindrical shape due to the elasticity of the fabric sheet 11 and is erected without an auxiliary tool without being bent in the electric pole P due to the strength of the plastic processing band 12. And the filler is inject | poured into the fabric sheet | seat 11 from the sheet | seat hose 15 using the sleeve part 15 with respect to the said reinforcing material 10 uprighted in the utility pole P. FIG. The injection hose H for injecting the filling material is inserted into the sleeve portion 15, and the front end of the sleeve portion 15 is closed by narrowing the binding tool 15 a, and the purse of the purse sealing material 16 is narrowed by narrowing the binding tool 16 c. It is fixed by closing the mouth. When the filler is injected from a pump (not shown) after fixing the injection hose H, the filler is first poured into the reinforcing member 10 from the lower inlet 14 a of the seat hose 14. When the filler is filled to such a height that the inlet 14a is closed, the filler is poured from the inlet 14a above. Thereafter, the filler 14a is sequentially filled from the bottom to the top while filling the filler up to the top. Thereby, the reinforcing material 10 sticks to the inner surface of the utility pole P, and reinforcement is performed.
地面近くに設けた挿入開口Ｐａを利用して作業できるので、前述した特許文献２にも記載されているように、充填材の供給圧力を著しく低減することができると共に、高所作業を伴わないで済む。 Since the work can be performed using the insertion opening Pa provided near the ground, the supply pressure of the filler can be remarkably reduced as described in Patent Document 2 described above, and the work at high places is not involved. Just do it.
以上の実施形態に係る補強材とその挿入方法によれば、電柱Ｐに補強材１０を挿入する作業に、補強材以外の特殊な治具を必要としない。しかも、この挿入作業は、特許文献２と同様、地面近くの挿入開口から行うことができる。したがって、従来に比べて格段に作業が容易である。 According to the reinforcing material and the insertion method thereof according to the above embodiment, a special jig other than the reinforcing material is not required for the operation of inserting the reinforcing material 10 into the utility pole P. Moreover, this insertion work can be performed from the insertion opening near the ground, as in Patent Document 2. Therefore, the work is much easier than before.
１０ 補強材
１１ 織物シート
１１ａ 縁部（接合部）
１２ プラスチック加工帯
１３ 織物部材（封止用）
１４ シートホース
１４ａ 注入口
１５ 袖部
１５ａ 結束具
１６ 巾着封止材
１６ｃ 結束具
10 Reinforcing Material 11 Fabric Sheet 11a Edge (Junction)
12 Plastic processing band 13 Textile member (for sealing)
14 Seat hose 14a Inlet 15 Sleeve 15a Binding tool 16 Drawstring sealant 16c Binding tool
Claims (3)
筒状に形成した折り畳み可能な織物シートからなり、
該筒状にした織物シートにおいてプラスチック加工帯が軸方向へ延伸していて、このプラスチック加工帯が可撓性で且つ当該織物シートを屹立させる強度を備える、補強材。 Reinforcing material to be inserted into the inside of the cylindrical object,
It consists of a foldable fabric sheet formed into a cylindrical shape,
A reinforcing material in which a plastic processing band extends in an axial direction in the tubular woven sheet, and the plastic processing band is flexible and has a strength to stand up the woven sheet.
前記プラスチック加工帯の無い部位で前記織物シートを折り曲げて当該補強材を折り畳む作業と、
この折り畳んだ補強材を、筒状物に開けた挿入開口から該筒状物の内部へ前記プラスチック加工帯の可撓性を利用して挿入し、そして前記プラスチック加工帯の強度を利用して当該挿入した補強材を前記筒状物内で屹立させる作業と、
を実施する方法。 A method of inserting the reinforcing material according to claim 1 into a cylindrical object,
Folding the reinforcing sheet by folding the fabric sheet at a site without the plastic processing band,
The folded reinforcing material is inserted into the inside of the cylindrical body from the insertion opening opened in the cylindrical body using the flexibility of the plastic processing band, and the strength of the plastic processing band is used to Work to erect the inserted reinforcing material in the cylindrical object,
How to implement.
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