JP4833607B2 - Repair covering - Google Patents

Repair covering Download PDF

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JP4833607B2
JP4833607B2 JP2005216076A JP2005216076A JP4833607B2 JP 4833607 B2 JP4833607 B2 JP 4833607B2 JP 2005216076 A JP2005216076 A JP 2005216076A JP 2005216076 A JP2005216076 A JP 2005216076A JP 4833607 B2 JP4833607 B2 JP 4833607B2
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sleeve
covering
repair
pressing
existing
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JP2006064176A (en
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伸吉 大岡
恒 喜多島
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東亜グラウト工業株式会社
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本発明は、既設管路の管路内周面を被装して補修する補修用被覆体に関する。   The present invention relates to a repair covering for covering and repairing an inner peripheral surface of an existing pipeline.
農業用水や下水等の流水を通す管路は、山間部や市街地等に設けられており、大型のものはコンクリート等で形成され、小型の管路の形成には、ヒューム管、陶管、硬質塩化ビニル管等が広く使用されている。これら管路は、通常地中に埋設されており、このため人為的もしくは自然的な地盤変動の影響を受けやすい。例えば、地盤沈下が生じた場合、これに伴い管路も沈下し管路の継ぎ目部がずれて隙間ができ、また地震が発生した場合に管路の一部にクラックが発生する場合もある。このような管路に発生した不具合は、その発生場所や管路の形状、大きさに因らず早急に対処できるようにする必要がある。   Pipes that pass running water such as agricultural water and sewage are provided in mountainous areas and urban areas, etc., large ones are made of concrete, etc. Hume pipes, ceramic pipes, hard pipes are used to form small pipes Vinyl chloride pipes are widely used. These pipes are usually buried in the ground and are therefore susceptible to artificial or natural ground movements. For example, when ground subsidence occurs, the pipe also subsides, and the joint of the pipe is displaced to create a gap, and when an earthquake occurs, a part of the pipe may crack. It is necessary to be able to deal with such a trouble that has occurred in the pipe line as soon as possible regardless of the place of occurrence, the shape and size of the pipe line.
特許文献1には、既設管路を補修する技術が開示されている。同文献に開示された技術は、断面が略円形形状の既設管路を補修するもので、環状の弾性シート部材21を不具合の発生した管路内周面に、この内周面の円周方向に沿って密着させることにより止水等の補修を行うものである。   Patent Document 1 discloses a technique for repairing an existing pipeline. The technique disclosed in this document is for repairing an existing pipe line having a substantially circular cross section. The annular elastic sheet member 21 is arranged on the pipe inner peripheral face where a problem has occurred, and the circumferential direction of the inner peripheral face. It is repaired such as water stop by making it adhere along.
具体的には、円筒状のスリーブSを形成する複数のスリーブ構成部材11等を有する補修用被覆体が使用されている。この補修用被覆体は、管路内において、例えば3枚のスリーブ構成部材11で略円筒状のスリーブを形成し、そして、その外周上に環状の弾性シート部材21を被装する。この状態でスリーブを拡径し、これにより弾性シート部材21を不具合が生じた管路内周面に密着させて、管路の止水等の補修を行うものである。なお、上記密着は、特に弾性シート部材21の両側端部に形成された突状部23を所定の押圧力で密着させるものである。   Specifically, a covering for repair having a plurality of sleeve constituting members 11 forming a cylindrical sleeve S is used. This repair covering body forms, for example, a substantially cylindrical sleeve with three sleeve constituent members 11 in a pipe line, and an annular elastic sheet member 21 is mounted on the outer periphery thereof. In this state, the diameter of the sleeve is expanded, whereby the elastic sheet member 21 is brought into close contact with the inner peripheral surface of the pipeline where the problem has occurred to repair the water stop of the pipeline. In addition, the said close_contact | adherence makes the protrusion part 23 formed especially in the both ends of the elastic sheet member 21 contact | adhere with a predetermined pressing force.
ここで、上述したスリーブの拡径は、同文献の図11や図15に示されたように、固定部材31を、所定方向からスリーブ構成部材11の相互間の隙間に挿入して行う。   Here, the above-described diameter expansion of the sleeve is performed by inserting the fixing member 31 into the gap between the sleeve constituent members 11 from a predetermined direction, as shown in FIGS.
更に、弾性シート部材21は、同文献の段落『0027』、『0066』や図16〜図19に示されたような押圧力均一化手段86を有している。これは、例えば、弾性シート部材81が管路と密着して止水を行う部位、すなわち弾性シート部材21の両側端部に設けられた突状部83において、周方向に中空部84を設け、この中に流動体85を封入したものである。従って、補修用被覆体を管路に設置した場合、管路周方向について、スリーブと管路内周面との間隔が大きくなった部位に、両者の間隔が近接した部位から流動体85が移動する構成となっている。   Further, the elastic sheet member 21 has pressing force equalizing means 86 as shown in paragraphs “0027” and “0066” of FIGS. This is, for example, in the portion where the elastic sheet member 81 is in close contact with the conduit and stops water, i.e., in the protruding portions 83 provided at both end portions of the elastic sheet member 21, the hollow portion 84 is provided in the circumferential direction, The fluid 85 is enclosed in this. Therefore, when the covering for repair is installed in the pipeline, the fluid 85 moves from the portion where the distance between the sleeve and the inner peripheral surface of the pipeline is increased in the circumferential direction from the portion where the distance between both is close. It is the composition to do.
この押圧力均一化手段86は、例えば地盤沈下等により、補修用被覆体が設けられた管路のつなぎ目にズレが発生する場合を想定して設けられたものである(同文献、図19参照)。この押圧力均一化手段86を使用することにより、前述した管路のズレ等に起因して、たとえスリーブと管路内周面との間隔が周方向に均一でなく、偏りが生じた場合であっても、弾性シート部材21の周方向のほぼ均一な押圧が可能となる。従って、良好な止水効果が得られることが、実施の結果わかっている。   The pressing force uniformizing means 86 is provided assuming that a deviation occurs in the joint of the pipe line provided with the repair covering due to, for example, ground subsidence (see the same reference, FIG. 19). ). By using this pressing force uniformizing means 86, the gap between the sleeve and the inner peripheral surface of the pipe is not uniform in the circumferential direction due to the above-described deviation of the pipe, etc. Even if it exists, the substantially uniform press of the circumferential direction of the elastic sheet member 21 is attained. Therefore, it is known as a result of implementation that a good water stop effect can be obtained.
図11は、既設管路の補修に関する他の従来技術例を説明した図である。同図に示された技術は、既設管路90の内壁部に生じた損傷部102に補修剤100を充填し、この充填部をゴムパッキン106で覆い固定するものである。そして、ゴムパッキン106の固定手段として、ゴムパッキン106にアングル108を既設管路90の内周方向からあてがい、アングル108の両端部をアンカーボルト104固定でしている。   FIG. 11 is a diagram for explaining another example of the related art relating to the repair of an existing pipeline. In the technique shown in the figure, the repairing agent 100 is filled in the damaged portion 102 generated in the inner wall portion of the existing pipe line 90, and this filling portion is covered and fixed by the rubber packing 106. Then, as a means for fixing the rubber packing 106, the angle 108 is applied to the rubber packing 106 from the inner peripheral direction of the existing pipe line 90, and both ends of the angle 108 are fixed to the anchor bolts 104.
図12は、既設管路の補修に関する更に他の従来技術例を説明した図である。同図に示された補修技術では、先ず既設管路90に発生したクラック124等の浸水箇所を既設管路90の内面側からV字状に削り(はつり)、Vカット部122を形成する。次いで、Vカット部122に、図示しない注入パイプからクラック124、更に既設管路90の外側まで止水剤125を注入する。止水剤125注入後、注入パイプを引き抜き、Vカット部122を急結セメント128で固め、そして補修箇所表面を仕上げ材129で仕上げるものである。   FIG. 12 is a diagram for explaining still another prior art example related to repair of an existing pipeline. In the repair technique shown in the figure, first, a water immersion location such as a crack 124 generated in the existing pipe line 90 is shaved into a V shape from the inner surface side of the existing pipe line 90 to form a V-cut portion 122. Next, the water-stopping agent 125 is injected into the V-cut portion 122 from an injection pipe (not shown) to the crack 124 and further to the outside of the existing pipe line 90. After injecting the water-stopping agent 125, the injection pipe is pulled out, the V-cut portion 122 is hardened with the quick setting cement 128, and the surface of the repair site is finished with the finishing material 129.
特開2003−130282号公報JP 2003-130282 A
特許文献1の技術は、断面が略円形の既設管路に適用されるものである。そして、特許文献1の補修用被覆体を略馬蹄形形状の既設管路に直接適用した場合、次の不都合が発生することが実験上わかっている。すなわち、管路内に洩水する水の圧力や弾性シート部材21の弾性力の影響を受け、スリーブ自体が内側に変形し、又めくれや持ち上がり等が発生する。このような不都合は、略馬蹄形形状の既設管路の底部から側部にかけて特に発生しやすい。   The technique of Patent Document 1 is applied to an existing pipe line having a substantially circular cross section. And when the covering for repair of patent document 1 is directly applied to the existing pipe line of a substantially horseshoe shape, it has been experimentally known that the following inconvenience occurs. In other words, the sleeve itself is deformed inward due to the pressure of water leaking into the pipe and the elastic force of the elastic sheet member 21, and turning or lifting occurs. Such inconvenience is particularly likely to occur from the bottom to the side of the existing pipe having a substantially horseshoe shape.
従って、たとえ上記押圧力均一化手段86を弾性シート部材に適用したとしても、スリーブ等の形状を管路の略馬蹄形形状に合わせただけでは、スリーブの形状を管路内に維持できず、押圧力均一化手段86の機能を有効に発揮できない。   Therefore, even if the pressing force equalizing means 86 is applied to the elastic sheet member, the shape of the sleeve cannot be maintained in the pipe line simply by adjusting the shape of the sleeve or the like to the substantially horseshoe shape of the pipe line. The function of the pressure equalizing means 86 cannot be exhibited effectively.
このように、既設管路の補修部位の環状弾性シート部材による安定したシールが底部から側部にかけて特に困難になり、特許文献1に開示された補修用被覆体を馬蹄形形状の既設管路に適用した場合、的確な機能が得られなかった。   As described above, the stable sealing by the annular elastic sheet member at the repaired portion of the existing pipeline becomes particularly difficult from the bottom to the side, and the repair covering disclosed in Patent Document 1 is applied to the existing horseshoe-shaped pipeline. In this case, an accurate function could not be obtained.
上記図10及び図11に示した従来技術では、一度に補修できる補修範囲が狭い範囲に限られている。従って補修作業を行う前に既設管路に発生した損傷箇所や損傷の程度を正確に把握し、既設管路の損傷状況や損傷規模に応じた正確な補修を行う必用がある。この損傷状況の把握や損傷箇所の補修のために既設管路を流れる流水等を予め排水等する必用が生じる場合もあり、作業に手間のかかるものになる。また、既設管路において、外部から水の浸入等が発生するような損傷が発生した場合、損傷箇所の周囲も微小なクラック等が発生している場合がある。このような場合、損傷箇所を含む比較的広い範囲を既設管路の全周に亘って補修することが止水を行う上で確実であるが、上記従来技術ではこの対応が困難になる。   In the prior art shown in FIGS. 10 and 11, the repair range that can be repaired at one time is limited to a narrow range. Therefore, it is necessary to accurately grasp the damaged portion and the degree of damage that have occurred in the existing pipeline before repair work, and to perform accurate repair according to the damage status and damage scale of the existing pipeline. It may be necessary to drain the flowing water or the like flowing through the existing pipe line in advance for grasping the damage state or repairing the damaged part, which takes time. In addition, in the existing pipe line, when damage that causes water intrusion or the like from the outside occurs, a minute crack or the like may also occur around the damaged part. In such a case, repairing a relatively wide range including the damaged part over the entire circumference of the existing pipe line is reliable in terms of water stoppage, but the above-described conventional technique makes it difficult to cope with it.
本発明は、断面が略馬蹄形の既設管路において、施工作業を可能ならしめ、常に最良の状態で既設管路に設置できる補修用被覆体を提供することを目的としてなされたものである。   An object of the present invention is to provide a covering for repair that can be installed in an existing pipe line in the best condition by enabling construction work in an existing pipe line having a substantially horseshoe-shaped cross section.
請求項1に記載の補修用被覆体は、曲率半径が所定値より大きく、両側部に角隅部の形成される底部と、底部に連続する側部と、側部に連続し底部及び側部よりも曲率半径の小さい天井部とを有する略馬蹄形形状の既設管路内周面を被装して補修する既設管路の補修用被覆体において、既設管路内周面に対向する略馬蹄形のスリーブを形成するため相互に所定の隙間を開けて周回方向に複数並べて配置されるスリーブ構成部材と、スリーブ構成部材にて形成されたスリーブの外周上に被装されてスリーブの外周面と既設管路内周面との間に挟装され、少なくとも両側端縁部が既設管路の内周面に密着する環状弾性シート部材と、既設管路内に配置されたスリーブ構成部材相互の隙間に挿入され、スリーブを拡径し環状弾性シート部材を既設管路内周面に押圧する挿入部材と、を有し、前記拡径動作中の前記スリーブ構成部材がスライド自由な状態でスリーブ構成部材に対し前記既設管路内周面方向に押圧力を加える押圧治具を少なくとも前記既設管路の底部に対向配置された前記スリーブ構成部材及び側部に対向配置された前記スリーブ構成部材の何れか一方又は双方に設置したことを特徴とする。
The repair covering according to claim 1 has a radius of curvature larger than a predetermined value, a bottom portion where corners are formed on both side portions, a side portion continuous to the bottom portion, a bottom portion and a side portion continuous to the side portion. In a covering for repairing an existing pipeline that covers and repairs the existing inner surface of a substantially horseshoe shape that has a ceiling portion with a smaller radius of curvature than a substantially horseshoe-shaped surface facing the inner peripheral surface of the existing pipeline To form a sleeve, a plurality of sleeve constituent members arranged in a circumferential direction with a predetermined gap therebetween, and an outer peripheral surface of the sleeve and an existing pipe mounted on the outer periphery of the sleeve formed by the sleeve constituent member Inserted into the gap between the annular elastic sheet member, which is sandwiched between the inner peripheral surface of the road, and at least both side edges are in close contact with the inner peripheral surface of the existing pipe line, and the sleeve constituent members arranged in the existing pipe line The sleeve is expanded and the annular elastic sheet member is installed in the existing pipe. Has an insertion member for pressing the inner peripheral surface, is added to the pressing force against the sleeve component to the existing conduit circumferential direction in the sleeve component in said radially enlarged operation slide free state The pressing jig is disposed at least on one or both of the sleeve constituent member arranged to face the bottom portion of the existing pipe line and the sleeve constituent member arranged to face the side portion.
上記構成の押圧治具を用いることにより、断面形状が略馬蹄形形状の既設管路においてもスリーブによる環状弾性シート部材の押圧を的確かつ安定して行うことができる。すなわち、押圧治具により角隅部の存在する底部や側部のスリーブ構成部材を的確に押圧することができるので、略馬蹄形状の既設管路に対する環状弾性シート部材の全体的かつ均一な押圧を達成することができる。   By using the pressing jig having the above-described configuration, the annular elastic sheet member can be pressed accurately and stably even in an existing pipe line having a substantially horseshoe-shaped cross section. In other words, the pressing jig can accurately press the bottom and side sleeve constituent members having the corners, so that the annular elastic sheet member can be pressed uniformly and uniformly against the existing horseshoe-shaped existing pipe line. Can be achieved.
請求項2に記載の補修用被覆体は、請求項1に記載の補修用被覆体であって、前記押圧治具が、押圧力を調整可能に構成されたことを特徴とする。   A repair covering according to claim 2 is the repair covering according to claim 1, wherein the pressing jig is configured to be capable of adjusting a pressing force.
これにより、押圧治具のスリーブへの押圧力を既設管路の規模やスリーブ構成部材の数に応じて適切な範囲に調整することが可能になる。従って、略馬蹄形形状の既設管路における押圧治具の設置箇所に応じて押圧力を変化させることにより、スリーブ構成部材の押圧状態の均一化及びスリーブの変形の防止がより確実に行われる。   This makes it possible to adjust the pressing force to the sleeve of the pressing jig to an appropriate range according to the scale of the existing pipe line and the number of sleeve constituent members. Therefore, by changing the pressing force in accordance with the installation location of the pressing jig in the substantially horseshoe-shaped existing pipe line, the pressing state of the sleeve constituent member is made uniform and the sleeve is prevented from being deformed more reliably.
請求項3に記載の補修用被覆体は、請求項1又は2に記載の補修用被覆体であって、押圧治具が、既設管内に配置されたスリーブ構成部材の両側部をそれぞれ別個に押圧するように、該両側部それぞれに設けられたことを特徴とする。   The repair covering according to claim 3 is the repair covering according to claim 1 or 2, wherein the pressing jig separately presses both side portions of the sleeve constituent member arranged in the existing pipe. Thus, it is provided on each of the both side portions.
これにより、押圧治具のスリーブへの押圧力をスリーブの両側部で別個に調整可能とし、既設管路の内部形状に対応したスリーブの押圧が可能となり、押圧治具の設置も容易となる。   Thereby, the pressing force to the sleeve of the pressing jig can be adjusted separately on both sides of the sleeve, the sleeve can be pressed corresponding to the internal shape of the existing pipe line, and the pressing jig can be easily installed.
請求項4に記載の補修用被覆体は、請求項3に記載の補修用被覆体であって、押圧治具が、スリーブ構成部材の両側部に沿って伸長する長尺押圧部を有することを特徴とする。   The repair covering according to claim 4 is the repair covering according to claim 3, wherein the pressing jig has a long pressing portion extending along both side portions of the sleeve constituent member. Features.
これにより、上記長尺の押圧範囲全域にわたって、押圧治具で直接的に押圧することができ、スリーブのより均一な押圧が図られる。従って、補修用被覆体のより安定した設置が可能になる。   Thereby, it can press directly with a pressing jig over the said long press range whole region, and a more uniform press of a sleeve is achieved. Therefore, more stable installation of the covering for repair becomes possible.
請求項5に記載の補修用被覆体は、請求項3又は4に記載の補修用被覆体であって、スリーブ構成部材は、その側部をスリーブ構成部材の伸長方向に屈曲ラインが延びるように複数回交互に逆方向に屈曲させて形成された係止部を有し、押圧治具は、係止部でスリーブ構成部材を押圧することを特徴とする。   The repair covering according to claim 5 is the repair covering according to claim 3 or 4, wherein the sleeve constituent member has a side portion extending in the direction of extension of the sleeve constituent member. It has the latching | locking part formed by making it bend in the reverse direction alternately several times, and a press jig | tool presses a sleeve structural member by a latching | locking part, It is characterized by the above-mentioned.
このように、側部を複数回交互に屈曲させたことにより、スリーブ構成部材へ管路内壁から加えられる応力に対し、変形しにくい構造になる。そして、屈曲して形成された係止部位で押圧する構成とすることにより、押圧治具のスリーブ構成部材からの離脱を有効に防止することができる。   In this way, by bending the side portions alternately a plurality of times, the structure is difficult to be deformed with respect to the stress applied to the sleeve constituent member from the inner wall of the pipe line. And it can prevent effectively the detachment | leave from the sleeve structural member of a press jig | tool by setting it as the structure pressed by the latching site | part formed by bending.
請求項6に記載の補修用被覆体は、請求項1〜5の何れかに記載の補修用被覆体であって、押圧治具と前記スリーブ構成部材との間には、弾性体が配置されている。   The repair covering according to claim 6 is the repair covering according to any one of claims 1 to 5, wherein an elastic body is disposed between the pressing jig and the sleeve constituent member. ing.
押圧治具でスリーブ構成部材を押圧する場合、例えば両者がステンレス鋼等の「硬い」材料で形成されていると、スリーブ構成部材が押圧治具で直接的に押圧される領域の縁部に応力が集中しやすくなる。従って、上記部位に弾性体を設けることにより、この応力集中を回避し、押圧作用の更なる均一化を達成すると共に、スリーブ構成部材の変形を確実に防止するものである。   When pressing the sleeve component with a pressing jig, for example, if both are formed of a “hard” material such as stainless steel, stress is applied to the edge of the region where the sleeve component is directly pressed by the pressing jig. Makes it easier to concentrate. Therefore, by providing an elastic body at the above-mentioned part, this stress concentration is avoided, a further uniform pressing action is achieved, and deformation of the sleeve constituent member is surely prevented.
本発明に係る補修用被覆体によれば、断面が略馬蹄形形状である既設管路内におけるスリーブによる、環状弾性シート部材の均一な押圧と、底部や側部におけるスリーブの内側への変形防止が可能となり、略馬蹄形形状の既設管路への補修用被覆体の施工が可能となる。   According to the repair covering according to the present invention, uniform pressing of the annular elastic sheet member by the sleeve in the existing pipe line having a substantially horseshoe-shaped cross section and prevention of deformation to the inside of the sleeve at the bottom and side portions are achieved. It becomes possible, and the construction of the covering for repair to the existing pipe having a substantially horseshoe shape becomes possible.
次に、本発明の実施の形態について図面に基づいて説明する。図1は、本発明にかかる補修用被覆体10の構成を示す分解斜視図である。この補修用被覆体10は、いわゆる馬蹄形形状の既設管路1に設置されるもので、この既設管路1が一点鎖線にて示されている。   Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing the structure of a repair covering 10 according to the present invention. The repair covering 10 is installed in a so-called horseshoe-shaped existing pipe 1, and the existing pipe 1 is indicated by a one-dot chain line.
馬蹄形形状の既設管路1は、曲率半径が所定値より大きい底部3と、底部3の両側部に角隅部4を形成して連続する側部5と、該側部5に連続し底部3及び側部5よりも曲率半径の小さい天井部6とで形成されている。   The existing horseshoe-shaped pipe line 1 includes a bottom portion 3 having a radius of curvature larger than a predetermined value, side portions 5 formed by forming corners 4 on both sides of the bottom portion 3, and a bottom portion 3 continuing to the side portion 5. And the ceiling portion 6 having a smaller radius of curvature than the side portion 5.
補修用被覆体10の基本構成は、上述の背景技術で説明した特許文献1の基本構成と同様である。すなわち、既設管路1の内周面1aに対向するようにスリーブ14を配置し、その外周に環状弾性シート部材16を被装し、環状弾性シート部材16がスリーブ14の外周面と内周面1aとの間に挟装された状態になっている。この環状弾性シート部材16は、例えば、上述のように両側端部に図示しない突状部を設けることにより、両側端縁部が内周面1aと密着する構成を有している。   The basic configuration of the repair covering 10 is the same as the basic configuration of Patent Document 1 described in the background art. That is, the sleeve 14 is disposed so as to face the inner peripheral surface 1 a of the existing pipe line 1, and the annular elastic sheet member 16 is covered on the outer periphery thereof, and the annular elastic sheet member 16 is connected to the outer peripheral surface and the inner peripheral surface of the sleeve 14. It is in a state of being sandwiched between 1a. For example, the annular elastic sheet member 16 has a configuration in which both side edge portions are in close contact with the inner peripheral surface 1a by providing protrusions (not shown) at both side ends as described above.
そして、既設管路1内において、環状弾性シート部材16が適切な押圧力で既設管路の内周面1aに押圧された状態が得られるようにスリーブ14を外方向に広げ、すなわち拡径させ、この状態を維持することによって既設管路1の補修を行うものである。   Then, in the existing pipeline 1, the sleeve 14 is expanded outward, that is, the diameter is expanded, so that a state in which the annular elastic sheet member 16 is pressed against the inner peripheral surface 1a of the existing pipeline with an appropriate pressing force is obtained. By maintaining this state, the existing pipeline 1 is repaired.
スリーブ14は、6枚のスリーブ構成部材14−1〜14−6を、相互に所定の間隔を開けて周方向に並べて配置することにより形成される。そして、このスリーブ構成部材14−1〜14−6は、スリーブ14を構成した時にスリーブ14外周面と既設管路1の内周面1aとが対向する関係となるように、並び方向(スリーブ構成部材14−1〜14−6の伸長方向)に所定量湾曲及び屈曲されて形成されている。また、スリーブ14の拡径は、スリーブ部材14−1〜14−6相互間に形成される隙間部38に挿入部材40を挿入、介在させることにより行う。   The sleeve 14 is formed by arranging six sleeve constituent members 14-1 to 14-6 side by side in the circumferential direction with a predetermined interval therebetween. The sleeve constituent members 14-1 to 14-6 are arranged in a line-up direction (sleeve construction) so that when the sleeve 14 is constructed, the outer peripheral surface of the sleeve 14 and the inner peripheral surface 1a of the existing pipe line 1 are opposed to each other. The members 14-1 to 14-6 are bent and bent by a predetermined amount. The diameter of the sleeve 14 is increased by inserting and interposing an insertion member 40 in a gap 38 formed between the sleeve members 14-1 to 14-6.
更に、本発明では、環状弾性シート部材16で既設管路1を補修するのに、後述する押圧治具(18、20−1、20−2)を所定の箇所に配置するようにしている。また、スリーブ構成部材14−1〜14−6は、補修用被覆体10が既設管路1を補修可能な状態、即ちスリーブ14が環状弾性シート部材16を適切な押圧力で既設管路の内周面1aに押圧する状態となるように構成されている。   Further, in the present invention, in order to repair the existing pipe line 1 with the annular elastic sheet member 16, a pressing jig (18, 20-1, 20-2) described later is arranged at a predetermined location. Further, the sleeve constituting members 14-1 to 14-6 are in a state where the repair covering 10 can repair the existing pipe line 1, that is, the sleeve 14 has a suitable pressing force on the annular elastic sheet member 16 in the existing pipe line. It is comprised so that it may be in the state pressed against the surrounding surface 1a.
次に、本発明の重要な構成要素である押圧治具(18、20−1、20−2)について説明する。押圧治具(18、20−1、20−2)は、スリーブ構成部材14−1〜14−6を既設管路1内に設置する時にスリーブ構成部材14−1〜14−6を内周面1aに押圧するように機能するものである。更に本実施の形態では、押圧治具(18、20−1、20−2)は、スリーブ構成部材14−1〜14−4が拡径動作を行う時にスライド自由となるように保持する機能をも有している。   Next, the pressing jig (18, 20-1, 20-2) which is an important component of the present invention will be described. The pressing jigs (18, 20-1, 20-2) are arranged on the inner peripheral surface of the sleeve constituent members 14-1 to 14-6 when the sleeve constituent members 14-1 to 14-6 are installed in the existing pipe line 1. It functions so as to press against la. Further, in the present embodiment, the pressing jig (18, 20-1, 20-2) has a function of holding the sleeve constituent members 14-1 to 14-4 so as to be slidable when performing the diameter expanding operation. Also have.
図2は、押圧治具(18、20−1、20−2)の構成及び既設管路1への設置状態を示している。図2(a)は概略側面図、図2(b)は押圧治具を同図(a)の下方側から見た図である。図に示したように、押圧治具(18、20−1、20−2)は、アングル材で構成された押圧板18と、一対のアンカーボルト20−1、20−2を有している。アンカーボルト20−1、20−2は、いわゆる通常の「アンカーボルト」の構成を有しており、既設管路1の壁内に一端23−1、23−2を埋め込み部24−1、24−1に埋め込んで固定されている。   FIG. 2 shows the configuration of the pressing jig (18, 20-1, 20-2) and the state of installation on the existing pipeline 1. FIG. 2A is a schematic side view, and FIG. 2B is a view of the pressing jig as viewed from the lower side of FIG. As shown in the figure, the pressing jig (18, 20-1, 20-2) has a pressing plate 18 made of an angle material and a pair of anchor bolts 20-1, 20-2. . The anchor bolts 20-1 and 20-2 have a so-called normal “anchor bolt” configuration, and one end 23-1 and 23-2 are embedded in the wall of the existing pipeline 1, It is fixed by being embedded in -1.
アンカーボルト20−1、20−2の埋め込み位置は、スリーブ14の長さ方向(図2の左右方向)の両側部、すなわちスリーブ14を長さ方向にまたいだ位置である。従って、アンカーボルト20−1、20−2を埋め込んでも、スリーブ14は既設管路1の内周面1a沿ってスライドすることが可能である。また、アンカーボルト20−1、20−2の他端部25−1、25−2には図示しないネジ溝が形成されている。そして、このネジ溝に螺合するネジ穴を有する回動部である締め付けナット52が上記ネジ穴で螺合しており、締め付けナット52を回動させることにより矢印300の方向に移動させることができる。   The embedding positions of the anchor bolts 20-1 and 20-2 are both sides of the sleeve 14 in the length direction (left and right direction in FIG. 2), that is, positions where the sleeve 14 straddles the length direction. Therefore, even if the anchor bolts 20-1 and 20-2 are embedded, the sleeve 14 can slide along the inner peripheral surface 1 a of the existing pipe line 1. In addition, screw grooves (not shown) are formed in the other end portions 25-1 and 25-2 of the anchor bolts 20-1 and 20-2. A tightening nut 52, which is a rotating portion having a screw hole that is screwed into the screw groove, is screwed in the screw hole, and the tightening nut 52 can be moved in the direction of the arrow 300 by rotating. it can.
そして、押圧板18が、押圧板18の両端部位置に形成された図示しない透孔にアンカーボルト20−1、20−2を挿通させ、締め付けナット52によってネジ止めすることによって保持されている。従って、押圧板18は、締め付けナット52の回動によって、締め付けナット52と同様に矢印300方向に移動させることが可能である。   The pressing plate 18 is held by inserting anchor bolts 20-1 and 20-2 into through holes (not shown) formed at both end positions of the pressing plate 18 and screwing them with a tightening nut 52. Therefore, the pressing plate 18 can be moved in the direction of the arrow 300 in the same manner as the tightening nut 52 by the rotation of the tightening nut 52.
押圧治具(18、20−1、20−2)の上記構成により、押圧板18でスリーブ構成部材14−1〜14−6を、内周面1aに所定の押圧力で押圧するものである。すなわち、押圧板18のスリーブ構成部材14と接触する部位がスリーブ14を押圧する部位となる。上記押圧力は、締め付けナット52の回動によって調整可能であり、例えば押圧力を弱くすることにより、スリーブ構成部材14−1〜14−6を内周面1aに沿ってスライド自由に内周面1aに保持することも可能である。そして、この押圧治具(18、20−1、20−2)を、少なくとも、既設管路1の底部3と側部5の何れか一方又は双方に設置するものである。   With the above configuration of the pressing jig (18, 20-1, 20-2), the pressing member 18 presses the sleeve constituent members 14-1 to 14-6 against the inner peripheral surface 1a with a predetermined pressing force. . That is, a portion of the pressing plate 18 that contacts the sleeve constituent member 14 is a portion that presses the sleeve 14. The pressing force can be adjusted by rotating the tightening nut 52. For example, by reducing the pressing force, the sleeve constituent members 14-1 to 14-6 can freely slide along the inner peripheral surface 1a. It is also possible to hold at 1a. And this press jig | tool (18, 20-1, 20-2) is installed in any one or both of the bottom part 3 and the side part 5 of the existing pipe line 1 at least.
ここで、スリーブ構成部材14−1〜14−6は、矢印200で示したスリーブ構成部材14−1〜14−6の伸長方向に沿って、屈曲部14aが両側部において屈曲形成されている。そして、スリーブ構成部材14−1〜14−6は、その中間部において、同様に矢印200方向に沿ってリブ14bが屈曲形成されている。この屈曲部14aとリブ14bにより、押圧板18でスリーブ構成部材14−1〜14−6を押圧しても、スリーブ構成部材14−1〜14−6が上記伸長方向に屈曲しないように補強されている。   Here, in the sleeve constituent members 14-1 to 14-6, bent portions 14 a are bent at both sides along the extending direction of the sleeve constituent members 14-1 to 14-6 indicated by the arrow 200. The sleeve constituent members 14-1 to 14-6 are similarly formed with the ribs 14b bent along the direction of the arrow 200 at the intermediate portions thereof. The bent portions 14a and the ribs 14b are reinforced so that the sleeve constituent members 14-1 to 14-6 do not bend in the extending direction even when the sleeve constituent members 14-1 to 14-6 are pressed by the pressing plate 18. ing.
なお、スリーブ構成部材14−1〜14−6の「側部」とは、スリーブ構成部材14−1〜14−6の伸長方向に平行する縁部付近を示し、後述するスリーブ構成部材14−1〜14−6の端部28と略直交する縁部付近である。   The “side portions” of the sleeve constituent members 14-1 to 14-6 indicate the vicinity of the edge parallel to the extending direction of the sleeve constituent members 14-1 to 14-6, and will be described later. It is in the vicinity of the edge substantially orthogonal to the end 28 of -14-6.
以上の構成により断面が略馬蹄形形状を有する既設管路1を補修用被覆体10で被覆して補修することが可能になる(図1参照)。すなわち、スリーブ14に形成される隙間部38に挿入部材40を挿入、介在させ、スリーブ14を適切な状態に拡径、維持するという、略円形形状の既設管路に適用されていた補修用被覆体(例えば、特許文献1参照)を、略馬蹄形形状の既設管路1に適用することが可能になる。   With the above configuration, the existing pipeline 1 having a substantially horseshoe-shaped cross section can be covered and repaired with the repair covering 10 (see FIG. 1). That is, the covering for repair that has been applied to the existing pipe having a substantially circular shape, in which the insertion member 40 is inserted and interposed in the gap portion 38 formed in the sleeve 14 to expand and maintain the sleeve 14 in an appropriate state. It becomes possible to apply the body (see, for example, Patent Document 1) to the existing pipe 1 having a substantially horseshoe shape.
具体的には、押圧治具(18、20−1、20−2)により角隅部4の存在する底部3や側部5のスリーブ構成部材14−1〜14−4を的確に押圧できる。また、漏水に起因する水圧や環状弾性シート部材16の弾性によるスリーブ14の形状の内側への変形やめくれ等を発生させることなく、スリーブ14の形状を適正な状態に維持できる。このように、略馬蹄形状の既設管路1に対する環状弾性シート部材16の全体的かつ均一な押圧を達成することができ、補修用被覆体10による管路の補修が可能になる。   Specifically, the sleeve constituent members 14-1 to 14-4 on the bottom 3 and the side 5 where the corners 4 are present can be accurately pressed by the pressing jigs (18, 20-1, 20-2). Moreover, the shape of the sleeve 14 can be maintained in an appropriate state without causing inward deformation or turning of the shape of the sleeve 14 due to water pressure caused by water leakage or elasticity of the annular elastic sheet member 16. As described above, the entire and uniform pressing of the annular elastic sheet member 16 against the existing horseshoe-shaped existing pipe line 1 can be achieved, and the pipe line can be repaired by the repair covering 10.
また、押圧治具(18、20−1、20−2)のスリーブ14への押圧力を既設管路1の規模やスリーブ構成部材の数に応じて適切な範囲に調整することが可能になる。従って、スリーブ14の押圧状態の均一化及びスリーブ14の変形の防止がより確実に行われる。   Further, the pressing force of the pressing jig (18, 20-1, 20-2) to the sleeve 14 can be adjusted to an appropriate range according to the scale of the existing pipe line 1 and the number of sleeve constituent members. . Therefore, the pressing state of the sleeve 14 is made uniform and the deformation of the sleeve 14 is more reliably prevented.
なお、押圧治具(18、20−1、20−2)の設置位置及び設置数は、必要に応じて適宜決定される。しかし、押圧治具(18、20−1、20−2)は、既設管路1の底部3〜側部5の所定の位置に設置すれば、補修用被覆体10は良好な補修状態が得られ、天井部6に押圧治具(18、20−1、20−2)を設ける必要はほとんどないことが実験上わかっている。   In addition, the installation position and the number of installation of a pressing jig (18, 20-1, 20-2) are suitably determined as needed. However, if the pressing jig (18, 20-1, 20-2) is installed at a predetermined position on the bottom 3 to the side 5 of the existing pipeline 1, the repair covering 10 is in a good repair state. It has been experimentally found that there is almost no need to provide pressing jigs (18, 20-1, 20-2) on the ceiling portion 6.
図3は、押圧治具の他の実施の形態を説明した説明図である。図2と同様の要素には同一の符号を付しその説明を省略する。本実施の形態では図2に示した押圧板18の代わりにL字状に屈曲した固定金具19−1、19−2を各アンカーボルト20−1、20−2に設けている。そして、このように構成された押圧治具(19、20)が、既設管路1内に配置されたスリーブ構成部材14−2の両側部をそれぞれ別個に押圧するように、この両側部それぞれに設けられている。   FIG. 3 is an explanatory view for explaining another embodiment of the pressing jig. The same elements as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted. In the present embodiment, the anchor bolts 20-1 and 20-2 are provided with fixing brackets 19-1 and 19-2 bent in an L shape instead of the pressing plate 18 shown in FIG. Then, the pressing jigs (19, 20) configured in this manner respectively press the both side portions of the sleeve constituent member 14-2 disposed in the existing pipe line 1 respectively on the both side portions. Is provided.
これにより、スリーブ構成部材14−2の既設管路1の内周面1aへの押圧力をスリーブの側部で別個に調整可能とし、スリーブ14による環状弾性シート部材16の押圧状態をより的確に行うものである。   As a result, the pressing force of the sleeve constituent member 14-2 on the inner peripheral surface 1a of the existing pipe line 1 can be adjusted separately at the side of the sleeve, and the pressing state of the annular elastic sheet member 16 by the sleeve 14 is more accurately determined. Is what you do.
図4(a)〜(c)は、押圧治具の更に他の実施の形態をそれぞれ説明した説明図である。なお、図2と同様の要素には同一の符号を付しその説明を省略する。本実施の形態においても、押圧治具(20、27)、(20、29)、(20、33)は、図2に示したものと同様のアンカーボルト20と締め付けナット52とを有している。   4 (a) to 4 (c) are explanatory views respectively explaining still another embodiment of the pressing jig. Elements similar to those in FIG. 2 are denoted by the same reference numerals and description thereof is omitted. Also in the present embodiment, the pressing jigs (20, 27), (20, 29), (20, 33) have the same anchor bolt 20 and the fastening nut 52 as those shown in FIG. Yes.
図4(a)〜(c)に示した各々の実施の形態では、スリーブ構成部材14−2の側部に沿って、この側部を複数回(2回)交互に逆方向に屈曲させることにより、係止部14cがスリーブ構成部材14−2に設けられている。図示のように、各係止部14cの屈曲形成は、屈曲ライン15が、スリーブ構成部材14−2の伸長方向(矢印200方向)に延びるように行われている。本実施の形態では各係止部14cは、スリーブ構成部材14−2の伸長方向のほぼ全域にわたって形成されている。なお、図4(a)〜(c)に示したように、各係止部14cは種々の角度αで屈曲させて形成することができる。   In each of the embodiments shown in FIGS. 4A to 4C, the side portion is bent in the opposite direction alternately two or more times (two times) along the side portion of the sleeve constituting member 14-2. Thus, the locking portion 14c is provided on the sleeve constituent member 14-2. As shown in the figure, each of the locking portions 14c is bent so that the bending line 15 extends in the extending direction of the sleeve constituent member 14-2 (the direction of the arrow 200). In the present embodiment, each locking portion 14c is formed over substantially the entire region in the extending direction of the sleeve constituent member 14-2. As shown in FIGS. 4A to 4C, each locking portion 14c can be formed by being bent at various angles α.
ここで、図4(a)では、上記角度αは大きく、スリーブ構成部材14−2の側方縁部は、内周面1aに近接して位置した状態になっている。また図4(b)では、上記角度αが図4(a)の場合よりも小さくなり、スリーブ構成部材14−2の側方縁部が、内周面1aから若干そり上がった状態になっている。更に、図4(c)では、上記角度αが図4(b)の場合よりも更に小さくなり、スリーブ構成部材14−2の側方縁部が、内周面1aから大きくそり上がった状態になっている。   Here, in FIG. 4A, the angle α is large, and the side edge portion of the sleeve constituting member 14-2 is located in the vicinity of the inner peripheral surface 1a. In FIG. 4B, the angle α is smaller than that in FIG. 4A, and the side edge of the sleeve component 14-2 is slightly raised from the inner peripheral surface 1a. Yes. Further, in FIG. 4C, the angle α is further smaller than in the case of FIG. 4B, and the side edge portion of the sleeve constituting member 14-2 is greatly warped from the inner peripheral surface 1a. It has become.
そして、図4(a)〜(c)に示した各押圧治具(20、27)、(20、29)、(20、33)の固定金具27、29、33が構成部材14−2を係止部14cで押圧する構成になっている。固定金具27、29、33のこれら形状は、係止部14cの屈曲角度αに応じ、適宜決定される。   The fixing brackets 27, 29, 33 of the pressing jigs (20, 27), (20, 29), (20, 33) shown in FIGS. It is the structure pressed by the latching | locking part 14c. These shapes of the fixing brackets 27, 29, and 33 are appropriately determined according to the bending angle α of the locking portion 14c.
ここで、本実施の形態では、アンカーボルト20をスリーブ構成部材14−2の側部に沿って所定間隔で複数設け、この複数のアンカーボルト20に一個の固定金具27、29、33を固定する構成となっている。固定金具27、29、33は、スリーブ構成部材14−2の両側部に沿って伸長する長尺押圧部を形成している。すなわち、固定金具27、29、33は、いわゆる「長尺物」であり、この長さやこれにより押圧するスリーブ構成部材14−2の側部の範囲は、スリーブ構成部材14−2の設置状況等に応じて適宜決定することができる。例えば、スリーブ構成部材14−2の側部のほぼ全範囲に、一個の固定金具27、29、33が配置される構成にしても良い。なお、固定金具33は、固定金具33の両端の2箇所でのみアンカーボルト20に保持される構成となっている。しかし、固定金具33の上部に、ナット52を設置するための穴を適宜設け、固定金具33の長さ方向の中間部においてもアンカーボルト20を設置できる構成にしても良い。   Here, in the present embodiment, a plurality of anchor bolts 20 are provided at predetermined intervals along the side portion of the sleeve constituent member 14-2, and one fixing bracket 27, 29, 33 is fixed to the plurality of anchor bolts 20. It has a configuration. The fixing brackets 27, 29, and 33 form a long pressing portion that extends along both side portions of the sleeve constituting member 14-2. That is, the fixing brackets 27, 29, and 33 are so-called “long objects”, and the length and the range of the side portion of the sleeve constituent member 14-2 pressed by this length are determined by the installation status of the sleeve constituent member 14-2 and the like. It can be determined appropriately depending on the situation. For example, one fixing bracket 27, 29, 33 may be arranged in substantially the entire range of the side portion of the sleeve constituent member 14-2. The fixing bracket 33 is configured to be held by the anchor bolt 20 only at two positions on both ends of the fixing bracket 33. However, a hole for installing the nut 52 may be appropriately provided in the upper part of the fixing metal 33 so that the anchor bolt 20 can be installed even in the middle part of the fixing metal 33 in the length direction.
以上の構成により、複数回屈曲して形成されたスリーブ構成部材14−2の側部は、例えば図2に示した、側部が1回だけ屈曲された状態と比較して、加えられる応力に対し非常に変形しにくい構造になる。そして、係止部14cにおいて固定金具27、29、33で押圧する構成とすることにより、長尺押圧部である固定金具27、29、33がスリーブ構成部材14−2の側部から離脱することなく、押圧を一定状態に維持でき、従って、均一な押圧が可能になる。   With the above configuration, the side portion of the sleeve constituent member 14-2 formed by bending a plurality of times is subjected to stress applied as compared with the state where the side portion is bent only once, for example, as shown in FIG. On the other hand, the structure is very difficult to deform. And by setting it as the structure pressed by the fixing metal fittings 27, 29, and 33 in the latching | locking part 14c, the fixing metal fittings 27, 29, and 33 which are long press parts will detach | leave from the side part of the sleeve structural member 14-2. The pressure can be maintained in a constant state, and thus a uniform pressure is possible.
更に、一枚の固定金具27、29、33を、複数のアンカーボルト20で維持する上記構成とすることにより、スリーブ構成部材14−2の側部に沿った所定の領域をこの部位で均一に押圧することとなる。従って、スリーブ構成部材14−2のより安定した押圧が可能となるとともに、スリーブ構成部材の変形等が確実に防止される。   Further, by adopting the above-described configuration in which one fixing bracket 27, 29, 33 is maintained by a plurality of anchor bolts 20, a predetermined region along the side portion of the sleeve constituting member 14-2 is made uniform at this portion. Will be pressed. Therefore, the sleeve constituent member 14-2 can be more stably pressed, and deformation of the sleeve constituent member can be reliably prevented.
なお、例えば、図3に示した押圧治具(19、20)の固定金具19と、スリーブ14とがステンレス鋼等の「硬い」材料で形成されている場合、固定金具19がスリーブ14を直接的に押圧する領域の縁部に応力が集中しやすくなる場合も考えられる。従って、固定金具19がスリーブ14を直接的に押圧する領域において、両者の間にゴム等の弾性体を配置するようにしても良い。これにより、固定金具19とスリーブ14とが接触する領域の縁部に応力が集中するのを回避し、スリーブ構成部材14−1〜14−6の変形を確実に防止できる。   For example, when the fixing bracket 19 and the sleeve 14 of the pressing jig (19, 20) shown in FIG. 3 are formed of a “hard” material such as stainless steel, the fixing bracket 19 directly attaches the sleeve 14 to the sleeve 14. It is also conceivable that stress tends to concentrate on the edge of the area to be pressed. Accordingly, an elastic body such as rubber may be disposed between the two in the region where the fixing bracket 19 directly presses the sleeve 14. Thereby, it can avoid that stress concentrates on the edge of the area | region where the fixing metal fitting 19 and the sleeve 14 contact, and can prevent the deformation | transformation of the sleeve structural members 14-1 to 14-6 reliably.
以下に、図5〜図10に基づいて、上述の実施の形態に係る補修用被覆体10を、実際に既設管路1に設置するための動作について説明する。なお、本実施の形態では、既設管路1の断面は左右対称であり、この既設管路1の補修箇所に6枚のスリーブ構成部材14−1〜14−6が左右対称に配置されてスリーブ14を構成するものとする。   Below, based on FIGS. 5-10, the operation | movement for actually installing the covering 10 for repair which concerns on the above-mentioned embodiment in the existing pipeline 1 is demonstrated. In the present embodiment, the cross section of the existing pipe line 1 is bilaterally symmetric, and six sleeve constituent members 14-1 to 14-6 are arranged symmetrically at the repair location of the existing pipe line 1. 14 is configured.
既設管路1の補修作業は、先ず管路内周面1aを洗浄し、必用に応じて管路内周面1aに付着したモルタルや既設管路1内に浸入した木根等を取り除き、かつ既設管路内周面1aの形状をディスクグラインダ或いは削孔機等により整える。また、必要に応じ、セメントやモルタルで内周面1aの修正を行う。それから、既設管路1の補修箇所にて補修用被覆体10の仮組を行う。   The repair work of the existing pipe line 1 is performed by first cleaning the pipe inner peripheral face 1a, removing mortar attached to the pipe inner peripheral face 1a as necessary, and tree roots entering the existing pipe pipe 1 and the like. The shape of the pipe inner peripheral surface 1a is adjusted by a disc grinder or a drilling machine. Moreover, the inner peripheral surface 1a is corrected with cement or mortar as necessary. Then, the repair covering 10 is temporarily assembled at the repair location of the existing pipeline 1.
図5は、既設管路1の補修箇所において行われる補修用被覆体10の仮組の第1段階を説明した説明図である。同図に示したように、先ず既設管路1の補修箇所に環状弾性シート部材16を搬入する。そして環状弾性シート部材16内部にて、既設管路1の底部3から側部5に対向配置されるスリーブ構成部材14−1〜14−4の仮接合を行う。   FIG. 5 is an explanatory diagram illustrating the first stage of the temporary assembly of the repair covering 10 performed at the repair location of the existing pipeline 1. As shown in the figure, first, the annular elastic sheet member 16 is carried into the repaired portion of the existing pipeline 1. Then, the sleeve constituent members 14-1 to 14-4 that are arranged to face the side portion 5 from the bottom portion 3 of the existing pipe line 1 are temporarily joined inside the annular elastic sheet member 16.
スリーブ構成部材14−1〜14−4の仮接合は、仮接合用の拡径治具51をスリーブ構成部材14−1〜14−4に設けた係止穴(図示せず)に係合させてスリーブ構成部材14−1〜14−4の端部近傍に係止し、互いに対向する拡径治具51を拡径治具51に形成された図示しない貫通孔を介して仮固定ボルト63で連結することによって行う。   The temporary joining of the sleeve constituent members 14-1 to 14-4 is performed by engaging a diameter expansion jig 51 for temporary joining with a locking hole (not shown) provided in the sleeve constituent members 14-1 to 14-4. The diameter-enlarging jigs 51 that are locked in the vicinity of the ends of the sleeve constituent members 14-1 to 14-4 and that face each other are temporarily fixed with bolts 63 through through holes (not shown) formed in the diameter-enlarging jig 51. Do by connecting.
この仮接合に前後して、スリーブ構成部材14−1〜14−4が配置された部位、すなわち既設管路1の底部3と側部5に押圧治具(18、20−1、20−2)を合計6箇所設け、これによりスリーブ構成部材14−1〜14−4を既設管路1の内周面1aに保持するようにする。側部5に位置する押圧治具(18、20−1、20−2)は、スリーブ構成部材14−1、14−4の略中央部寄りに設けられている。底部3に位置する押圧治具(18、20−1、20−2)は、互いに略等間隔になるように設けられている。このとき図2にて説明した締め付けナット52の締め付け力は弱く調整されており、スリーブ構成部材14−1〜14−4が内周面1aに沿ってスライド自由に、すなわち拡径動作可能に内周面1aに保持されている。   Before and after this temporary joining, pressing jigs (18, 20-1, 20-2) are disposed on the portions where the sleeve constituent members 14-1 to 14-4 are arranged, that is, the bottom 3 and the side 5 of the existing pipeline 1. ) Are provided in a total of six locations, whereby the sleeve constituent members 14-1 to 14-4 are held on the inner peripheral surface 1 a of the existing pipeline 1. The pressing jigs (18, 20-1, 20-2) located on the side part 5 are provided near the substantially central part of the sleeve constituent members 14-1, 14-4. The pressing jigs (18, 20-1, 20-2) located on the bottom 3 are provided so as to be substantially equidistant from each other. At this time, the tightening force of the tightening nut 52 described with reference to FIG. 2 is adjusted to be weak, and the sleeve constituent members 14-1 to 14-4 are freely slidable along the inner peripheral surface 1a, that is, can be expanded. It is held on the peripheral surface 1a.
図6は、補修用被覆体10の仮組の第2段階を説明した説明図である。上述した仮組の第1段階終了後、仮組の第2段階では既設管路1の天井部6に位置するスリーブ構成部材14−5、14−6の仮接合を行う。同図では、既設管路1の上部には押圧治具(18、20−1、20−2)が設けられていないが、既設管路1の上部にも押圧治具(18、20−1、20−2)を設けるようにしても良い。   FIG. 6 is an explanatory view illustrating the second stage of the temporary assembly of the repair covering 10. After the first stage of the temporary assembly described above, in the second stage of the temporary assembly, the sleeve constituent members 14-5 and 14-6 located on the ceiling portion 6 of the existing pipe line 1 are temporarily joined. In the drawing, the pressing jig (18, 20-1, 20-2) is not provided on the upper part of the existing pipe line 1, but the pressing jig (18, 20-1) is also provided on the upper part of the existing pipe line 1. 20-2) may be provided.
図7は、補修用被覆体10の仮組の最終段階を説明した説明図である。仮組の最終段階では、スリーブ構成部材14−1〜14−6に係止された拡径治具51を1箇所(本実施の形態ではスリーブ14の最上部)だけ残して取り外している。そして、拡径治具51を取り外した部位において、隣り合うスリーブ構成部材14−1〜14−6の端部28を互いに対向するように位置させて、隙間部38を形成し、隙間部38に挿入部材40を介在させる。これにより、拡径治具51を取り外した部位の互いに隣り合うスリーブ構成部材14−1〜14−6の端部28が対向した状態が維持される。   FIG. 7 is an explanatory view illustrating the final stage of the temporary assembly of the repair covering 10. In the final stage of the temporary assembly, the diameter expanding jig 51 locked to the sleeve constituent members 14-1 to 14-6 is removed except for one place (the uppermost portion of the sleeve 14 in the present embodiment). And in the site | part which removed the diameter-expansion jig | tool 51, the edge part 28 of adjacent sleeve structural member 14-1 to 14-6 is located so that it may mutually oppose, the clearance gap part 38 is formed, and the clearance gap part 38 is formed. The insertion member 40 is interposed. Thereby, the state in which the end portions 28 of the sleeve constituent members 14-1 to 14-6 adjacent to each other at the portion from which the diameter expansion jig 51 is removed is maintained.
図7に示した状態では、スリーブ14は補修状態にまで拡径されておらず、環状弾性シート部材16から受ける応力は僅かである。そして、スリーブ構成部材14−1〜14−4は押圧治具(18、20−1、20−2)により内周面1aに沿ってスライド自由に保持されている。従って、上記スリーブ構成部材14−1〜14−6の端部28間における隙間部38の形成と、挿入部材40の隙間部38への挿入は、特に機器等を使用することなく実施することができる。更に、後述する挿入部材40の挿入用機器を用いて実施することも可能である(図8、9参照)。   In the state shown in FIG. 7, the sleeve 14 is not expanded to the repaired state, and the stress received from the annular elastic sheet member 16 is slight. The sleeve constituent members 14-1 to 14-4 are slidably held along the inner peripheral surface 1a by the pressing jigs (18, 20-1, 20-2). Therefore, the formation of the gap portion 38 between the end portions 28 of the sleeve constituent members 14-1 to 14-6 and the insertion of the insertion member 40 into the gap portion 38 can be performed without using any device. it can. Furthermore, it is also possible to implement using an insertion device for the insertion member 40 described later (see FIGS. 8 and 9).
補修用被覆体10の仮組の終了後、スリーブ14の最終的な拡径作業を行うため、図7に示したスリーブ14の上部位置(拡径治具51が取り付けられている位置)に隙間部38(図9参照)を形成する作業を行う。この作業は、以下に説明する隙間部形成ジャッキ70を使用して行う。   After the temporary assembly of the repair covering 10, a gap is formed at the upper position of the sleeve 14 (the position where the diameter expansion jig 51 is attached) shown in FIG. The operation of forming the portion 38 (see FIG. 9) is performed. This operation is performed using a gap forming jack 70 described below.
図8は、互いに隣り合うスリーブ構成部材14−1、14−6の端部28に隙間部38を形成するのに使用する隙間部形成ジャッキ70の構成を説明する説明図である。この隙間部形成ジャッキ70は、拡径治具51の間に介在される一対の爪部72と、これら爪部72を油圧の供給によって互いに離反する方向に移動させるシリンダー部74を有している。   FIG. 8 is an explanatory view for explaining the configuration of the gap forming jack 70 used to form the gap 38 at the end 28 of the sleeve constituent members 14-1 and 14-6 adjacent to each other. The gap forming jack 70 has a pair of claw portions 72 interposed between the diameter expansion jigs 51, and a cylinder portion 74 that moves the claw portions 72 away from each other by supplying hydraulic pressure. .
上記図7において隙間部38を形成する場合、先ず拡径治具51に設けられた仮固定ボルト63を取り外す。そして拡径治具51をスリーブ構成部材12に係止させた状態で、隙間部形成ジャッキ70によりスリーブ構成部材12を移動させ、これにより隙間部38を形成するものである。   When forming the gap portion 38 in FIG. 7, first, the temporary fixing bolt 63 provided on the diameter expansion jig 51 is removed. Then, in a state where the diameter expanding jig 51 is locked to the sleeve constituent member 12, the sleeve constituent member 12 is moved by the gap portion forming jack 70, thereby forming the gap portion 38.
上記スリーブ14の最上部(図7参照)に隙間部38を形成後、この隙間部38に挿入部材40を挿入し、スリーブ14の拡径作業を行う。この拡径作業は、以下に説明する挿入用ジャッキ76を使用して行う。   After forming the gap portion 38 at the uppermost portion (see FIG. 7) of the sleeve 14, the insertion member 40 is inserted into the gap portion 38, and the sleeve 14 is expanded in diameter. This diameter expansion operation is performed using an insertion jack 76 described below.
図9は、挿入部材40を隙間部38に挿入するのに使用する挿入用ジャッキ76の構成を説明する説明図である。同図に示したように、挿入用ジャッキ76は、スリーブ構成部材14−1、14−6の幅よりも広い間隔を有して対峙する一対の爪部78と、これらの爪部78を油圧の供給により互いに接近方向に移動させるシリンダー部80を有している。挿入部材40を隙間部38に挿入するときは、互いに対向する一対の挿入部材40の後端部に爪部78を当接させ、シリンダー部80を駆動させて、各挿入部材40を互いに接近するように移動させて上記挿入を行い、スリーブ14の拡径を行うものである。   FIG. 9 is an explanatory diagram for explaining the configuration of an insertion jack 76 used to insert the insertion member 40 into the gap portion 38. As shown in the figure, the jack for insertion 76 has a pair of claw portions 78 that face each other with a gap wider than the width of the sleeve constituent members 14-1 and 14-6, and these claw portions 78 are hydraulically operated. Cylinder portions 80 that are moved toward each other by being supplied. When inserting the insertion member 40 into the gap portion 38, the claw portion 78 is brought into contact with the rear end portions of the pair of insertion members 40 facing each other, and the cylinder portion 80 is driven to bring the insertion members 40 closer to each other. In this way, the sleeve 14 is expanded by performing the above insertion.
こうのように、スリーブ14の最上部(図7参照)において隙間部38を形成し、この隙間部38に挿入部材40を挿入することによる拡径作業終了後、スリーブ14の他の隙間部38に介在している挿入部材40の更なる挿入作業(移動作業)を行っても良い。例えば、底部3に位置する隙間部38に介在する挿入部材40を、図9に示した挿入用ジャッキ76を用いて更に隙間部38に沿って挿入方向に移動させ、この部位の端部28を互いに離間する方向に移動させる。これにより、底部3におけるスリーブ構成部材14−2、14−3による、環状弾性シート部材16の押圧が強化される。   As described above, the gap portion 38 is formed at the uppermost portion of the sleeve 14 (see FIG. 7), and after the diameter expanding operation is completed by inserting the insertion member 40 into the gap portion 38, the other gap portion 38 of the sleeve 14. Further insertion work (moving work) of the insertion member 40 interposed between the two may be performed. For example, the insertion member 40 interposed in the gap portion 38 located at the bottom portion 3 is further moved in the insertion direction along the gap portion 38 using the insertion jack 76 shown in FIG. Move in directions away from each other. Thereby, the pressing of the annular elastic sheet member 16 by the sleeve constituent members 14-2 and 14-3 at the bottom 3 is reinforced.
図10は、補修用被覆体10の既設管路1への設置作業が終了した状態を説明した説明図である。同図における補修用被覆体10の状態では、環状弾性シート部材16の両側部(図示せず)が圧縮変形され、スリーブ14と既設管路1の内周面1aとの間を水密的に接合する状態になっている。   FIG. 10 is an explanatory diagram illustrating a state in which the installation work of the repair covering 10 on the existing pipeline 1 has been completed. In the state of the repair covering 10 in the figure, both side portions (not shown) of the annular elastic sheet member 16 are compressed and deformed, and the sleeve 14 and the inner peripheral surface 1a of the existing pipe line 1 are joined in a watertight manner. It is in the state to do.
この状態では、図2で説明した押圧治具(18、20−1、20−2)の締め付けナット52の締め付けを行い、既設管路1の底部3から側部5にかけて位置するスリーブ構成部材14−1〜14−4を内周面1aに押圧するようにしている。この押圧は、締め付けナット52の締め付け力の調整により、適正な押圧力に調整されている。これにより、上記環状弾性シート部材16と既設管路1の内周面1aとの間の水密的な押圧状態を確実なものにしている。   In this state, the tightening nut 52 of the pressing jig (18, 20-1, 20-2) described in FIG. 2 is tightened, and the sleeve constituting member 14 located from the bottom 3 to the side 5 of the existing pipe line 1 is located. -1 to 14-4 are pressed against the inner peripheral surface 1a. This pressing is adjusted to an appropriate pressing force by adjusting the tightening force of the tightening nut 52. Thereby, the watertight pressing state between the said annular elastic sheet member 16 and the internal peripheral surface 1a of the existing pipe line 1 is ensured.
本発明は、上述の実施の形態に限定されるものではなく、本発明の要旨の範囲内で種々の変更が可能である。例えば、本実施の形態では、図1に示したスリーブ構成部材12の数は6枚としたが、これには限られず、例えば7枚以上であっても良く、又5枚以下であっても良い。   The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, in the present embodiment, the number of the sleeve constituent members 12 shown in FIG. 1 is six, but is not limited to this. For example, the number may be seven or more, or may be five or less. good.
補修用被覆体の構成を示す分解斜視図である。It is a disassembled perspective view which shows the structure of the covering for repair. 押圧治具の構成とその設置状態を示しており、既設管路に固定された状態を示している。図2(a)は概略側面図、図2(b)は押圧治具を図2(a)の下方側から見た図である。The structure of the pressing jig and its installation state are shown, and the state is shown fixed to the existing pipeline. 2A is a schematic side view, and FIG. 2B is a view of the pressing jig as viewed from the lower side of FIG. 2A. 押圧治具の他の実施の形態を説明した説明図である。It is explanatory drawing explaining other embodiment of the pressing jig. 押圧治具の更に他の実施の形態を説明した説明図である。図4(a)〜(c)はそれぞれ異なる押圧治具の例を示している。It is explanatory drawing explaining further another embodiment of the pressing jig. 4A to 4C show examples of different pressing jigs. 既設管路において行われる補修用被覆体の仮組の第1段階を説明した説明図である。It is explanatory drawing explaining the 1st step of the temporary assembly of the covering for repair performed in the existing pipe line. 補修用被覆体の仮組の第2段階を説明した説明図である。It is explanatory drawing explaining the 2nd step of the temporary assembly of the covering for repair. 補修用被覆体の仮組の最終段階を説明した説明図である。It is explanatory drawing explaining the last step of the temporary assembly of the covering for repair. 隙間部形成ジャッキの構成を説明する説明図である。It is explanatory drawing explaining the structure of a clearance gap formation jack. 挿入用ジャッキの構成を説明する説明図である。It is explanatory drawing explaining the structure of the jack for insertion. 補修用被覆体の既設管路への設置作業が終了した状態を説明した説明図である。It is explanatory drawing explaining the state which the installation operation | work to the existing pipe line of the covering for repair was complete | finished. 従来技術を説明する図である。It is a figure explaining a prior art. 従来技術を説明する図である。It is a figure explaining a prior art.
符号の説明Explanation of symbols
10 補修用被覆体
14 スリーブ
14−1〜14−6 スリーブ構成部材
16 環状弾性シート部材
18 押圧板
20 アンカーボルト
28 端部
38 隙間部
40 挿入部材
52 締め付けナット
DESCRIPTION OF SYMBOLS 10 Cover for repair 14 Sleeve 14-1 to 14-6 Sleeve constituent member 16 Annular elastic sheet member 18 Press plate 20 Anchor bolt 28 End portion 38 Clearance portion 40 Insertion member 52 Tightening nut

Claims (6)

  1. 曲率半径が所定値より大きく、両側部に角隅部の形成される底部と、該底部に連続する側部と、該側部に連続し前記底部及び側部よりも曲率半径の小さい天井部とを有する略馬蹄形形状の既設管路内周面を被装して補修する既設管路の補修用被覆体において、
    前記既設管路内周面に対向する略馬蹄形のスリーブを形成するため相互に所定の隙間を開けて周回方向に複数並べて配置されるスリーブ構成部材と、
    該スリーブ構成部材にて形成されたスリーブの外周上に被装されて該スリーブの外周面と前記既設管路内周面との間に挟装され、少なくとも両側端縁部が前記既設管路の内周面に密着する環状弾性シート部材と、
    前記既設管路内に配置された前記スリーブ構成部材相互の隙間に挿入され、前記スリーブを拡径し前記環状弾性シート部材を前記既設管路内周面に押圧する挿入部材と、を有し、
    前記拡径動作中の前記スリーブ構成部材がスライド自由な状態でスリーブ構成部材に対し前記既設管路内周面方向に押圧力を加える押圧治具を少なくとも前記既設管路の底部に対向配置された前記スリーブ構成部材及び側部に対向配置された前記スリーブ構成部材の何れか一方又は双方に設置したことを特徴とする既設管の補修用被覆体。
    A bottom portion having a corner having a radius of curvature larger than a predetermined value and having corners formed on both sides; a side portion continuous to the bottom portion; and a ceiling portion continuous to the side portion and having a smaller radius of curvature than the bottom portion and the side portion. In a covering for repairing an existing pipeline that covers and repairs the inner circumferential surface of an existing pipeline having a substantially horseshoe shape,
    Sleeve forming members that are arranged side by side in a circumferential direction with a predetermined gap therebetween to form a substantially horseshoe-shaped sleeve that faces the inner peripheral surface of the existing pipe line,
    Covered on the outer periphery of the sleeve formed by the sleeve constituent member and sandwiched between the outer peripheral surface of the sleeve and the inner peripheral surface of the existing pipeline, and at least both side edge portions of the existing pipeline An annular elastic sheet member in close contact with the inner peripheral surface;
    An insertion member that is inserted into a gap between the sleeve constituent members disposed in the existing pipe line, expands the sleeve, and presses the annular elastic sheet member against the inner peripheral surface of the existing pipe line,
    Facing the bottom of at least the existing pipeline a pressing tool to apply a pressing force to the existing conduit circumference direction relative to the sleeve component in the free state the sleeve component in said radially enlarged operation slide A covering for repairing an existing pipe, wherein the covering member is installed on one or both of the sleeve constituent member and the sleeve constituent member arranged to face each other.
  2. 前記押圧治具が、前記押圧力を調整可能に構成されたことを特徴とする請求項1に記載の補修用被覆体。   The covering for repair according to claim 1, wherein the pressing jig is configured to be capable of adjusting the pressing force.
  3. 前記押圧治具が、前記既設管内に配置された前記スリーブ構成部材の両側部をそれぞれ別個に押圧するように、該両側部それぞれに設けられたことを特徴とする請求項1又は2に記載の補修用被覆体。   The said pressing jig was provided in each of these both sides so that each of the both sides of the said sleeve structural member arrange | positioned in the said existing pipe might be pressed separately, respectively. Repair covering.
  4. 前記押圧治具が、前記スリーブ構成部材の両側部に沿って伸長する長尺押圧部を有することを特徴とする請求項3に記載の補修用被覆体。   The covering for repair according to claim 3, wherein the pressing jig has a long pressing portion extending along both side portions of the sleeve constituting member.
  5. 前記スリーブ構成部材は、その側部を前記スリーブ構成部材の伸長方向に屈曲ラインが延びるように複数回交互に逆方向に屈曲させて形成された係止部を有し、前記押圧治具は、前記係止部で前記スリーブ構成部材を押圧することを特徴とする請求項3又は4に記載の補修用被覆体。   The sleeve component member has a locking portion formed by alternately bending a side portion of the sleeve component member in the opposite direction so that a bending line extends in the extending direction of the sleeve component member. The repair covering according to claim 3 or 4, wherein the sleeve constituting member is pressed by the locking portion.
  6. 前記押圧治具と前記スリーブ構成部材との間には、弾性体が配置されたことを特徴とする請求項1〜5の何れかに記載の補修用被覆体。   The covering for repair according to claim 1, wherein an elastic body is disposed between the pressing jig and the sleeve constituent member.
JP2005216076A 2004-07-26 2005-07-26 Repair covering Expired - Fee Related JP4833607B2 (en)

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KR101484768B1 (en) 2014-02-17 2015-01-21 주식회사 강물 Method of pipe in pipe renewal construction for large diameter roll bending steel pipe

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CN102032416B (en) * 2011-01-19 2012-01-25 重庆大学 Steel-pipe-insertion local strengthening trenchless repair method for drainage pipeline with large pipe diameter

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JPS57163080A (en) * 1981-03-31 1982-10-07 Akira Washida Inserting element for spring ring
JPS61617Y2 (en) * 1982-06-26 1986-01-10
JPH0112053Y2 (en) * 1983-03-22 1989-04-10
JPH0256555B2 (en) * 1984-10-31 1990-11-30 Usui Kokusai Sangyo Kk
JPH0543917B2 (en) * 1984-11-02 1993-07-02 Mitsubishi Plastics Ind
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JP3730749B2 (en) * 1997-04-21 2006-01-05 積水化学工業株式会社 Repair method inside the tube
JP2001336677A (en) * 2000-05-29 2001-12-07 Sekishin Sangyo Kk Pipe for regenerating underground buried pipe
JP4462814B2 (en) * 2001-08-13 2010-05-12 東亜グラウト工業株式会社 Cover for repairing existing pipes

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101484768B1 (en) 2014-02-17 2015-01-21 주식회사 강물 Method of pipe in pipe renewal construction for large diameter roll bending steel pipe

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