JP2019202431A - Connecting method of lining body, and connecting structure of lining body - Google Patents
Connecting method of lining body, and connecting structure of lining body Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims description 37
- 230000003014 reinforcing effect Effects 0.000 claims description 32
- 239000012779 reinforcing material Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 6
- 239000000057 synthetic resin Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 241000135309 Processus Species 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
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- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
本発明は、下水管などの空洞構造物の内周面に沿って内張りされるライニング体の連結方法及び連結構造に関する。 The present invention relates to a connecting method and a connecting structure for a lining body lined along an inner peripheral surface of a hollow structure such as a sewer pipe.
従来、下水管などの空洞構造物を補修・補強する方法として、図９に示すように、空洞構造物１００の内周面に沿ってライニング体２を内張りする工法が提案されている（特許文献１参照）。ライニング体２は、空洞構造物１００の長さ方向に複数並設されるものである。図９や図１０に示すように、隣り合う２つのライニング体２，２は、連結部材３を用いて連結される。 Conventionally, as a method of repairing / reinforcing a hollow structure such as a sewer pipe, a method of lining the lining body 2 along the inner peripheral surface of the hollow structure 100 has been proposed (Patent Document). 1). A plurality of the lining bodies 2 are arranged side by side in the length direction of the hollow structure 100. As shown in FIGS. 9 and 10, two adjacent lining bodies 2 and 2 are connected using a connecting member 3.
ライニング体２は、本体としての筒状体４を有しており、筒状体４の軸方向の両端には係合部８が形成される。係合部８は、筒状体４の周方向に延びる溝１１を構成するものであり、溝１１は筒状体４の径方向内側に開口する。 The lining body 2 has a cylindrical body 4 as a main body, and engaging portions 8 are formed at both ends of the cylindrical body 4 in the axial direction. The engaging portion 8 constitutes a groove 11 extending in the circumferential direction of the cylindrical body 4, and the groove 11 opens on the radially inner side of the cylindrical body 4.
ライニング体２，２を連結する際には、まず、空洞構造物１００の内部で、二つのライニング体２，２を並設する並設工程が実施される。この際には図１１に示すように、二つのライニング体２，２が空洞構造物１００の長さ方向に所定の間隔をあけて位置し、且つ、一のライニング体２の一端にある係合部８と、二のライニング体２の他端にある係合部８とが相対するように、二つのライニング体２，２が並設される。以下、相対する「一のライニング体２，２の一端にある係合部８」と「二のライニング体２，２の他端にある係合部８」との総称として、「相対する係合部８，８」と記す。 When connecting the lining bodies 2, 2, first, a side-by-side process is performed in which the two lining bodies 2, 2 are juxtaposed inside the hollow structure 100. In this case, as shown in FIG. 11, the two lining bodies 2, 2 are positioned at a predetermined interval in the length direction of the hollow structure 100 and are engaged at one end of the one lining body 2. The two lining bodies 2 and 2 are arranged side by side so that the part 8 and the engaging part 8 at the other end of the second lining body 2 face each other. Hereinafter, the opposing “engagement portion 8 at one end of one lining body 2, 2” and “engagement portion 8 at the other end of second lining body 2, 2” are collectively referred to as “opposing engagement”. Part 8, 8 ".
ついで図９や図１０に示すように、連結部材３を用いて、二つのライニング体２，２を連結する連結工程が実施される。図１２は連結部材３を示す斜視図である（図１２では連結部材３の一部の図示を省略している）。図１３は連結部材３の断面図である。連結部材３は、ポリエチレン等の樹脂から形成されるものであり、帯材４０や、帯材４０の表面から突出する一対の突起４１，４１を有している（符号４２については後述する）。 Next, as shown in FIGS. 9 and 10, a connecting step of connecting the two lining bodies 2, 2 is performed using the connecting member 3. FIG. 12 is a perspective view showing the connecting member 3 (a part of the connecting member 3 is not shown in FIG. 12). FIG. 13 is a cross-sectional view of the connecting member 3. The connecting member 3 is formed from a resin such as polyethylene, and has a band member 40 and a pair of protrusions 41 and 41 protruding from the surface of the band member 40 (reference numeral 42 will be described later).
上記連結工程では、相対する係合部８，８の内側において、連結部材３を、二つのライニング体２，２の周方向（ライニング体２，２が備える筒状体４，４の周方向）に延ばしながら、連結部材３の突起４１，４１を、相対する係合部８，８の溝１１，１１に係合させることが行われる（図９，図１０参照）。すなわち、突起４１，４１を溝１１，１１に係合させる作業が、ライニング体２，２の周方向に進められる。 In the connecting step, the connecting member 3 is arranged in the circumferential direction of the two lining bodies 2 and 2 (in the circumferential direction of the cylindrical bodies 4 and 4 provided in the lining bodies 2 and 2) inside the opposing engaging portions 8 and 8. The protrusions 41 and 41 of the connecting member 3 are engaged with the grooves 11 and 11 of the opposing engaging portions 8 and 8 (see FIGS. 9 and 10). That is, the operation of engaging the protrusions 41 and 41 with the grooves 11 and 11 is advanced in the circumferential direction of the lining bodies 2 and 2.
ところで上記従来の連結方法では、作業の先行位置で、連結部材３の突起４１，４１を相対する係合部８，８の溝１１，１１に押し込み係合させると、その反発から、いまだ突起４１，４１を溝１１，１１に係合させていない位置で、相対する係合部８，８の間隔Ｈ（図１１参照）が設計値よりも大きくなることがあった。そしてこの場合には、上記係合部８，８の間隔Ｈが大きくなった位置（以下、間隔拡大位置）で、突起４１，４１を溝１１，１１に係合させることが困難になる事態が生じていた。つまり上記間隔拡大位置で突起４１，４１を溝１１，１１に係合させる作業を行う際には、作業が完了した別の位置で突起４１，４１が溝１１，１１に係合していることで、上記間隔拡大位置において、相対する係合部８，８の間隔Ｈを縮める動きが規制される。このため連結部材３の突起４１，４１を係合部８，８の溝１１，１１に係合させることが困難になっていた。 By the way, in the conventional connecting method, when the protrusions 41 and 41 of the connecting member 3 are pushed into the grooves 11 and 11 of the opposing engaging portions 8 and 8 at the preceding position of the work, the protrusion 41 still remains due to the repulsion. , 41 are not engaged with the grooves 11, 11, the distance H (see FIG. 11) between the opposing engaging portions 8, 8 may be larger than the design value. In this case, it is difficult to engage the protrusions 41 and 41 with the grooves 11 and 11 at a position where the interval H between the engaging portions 8 and 8 is increased (hereinafter referred to as an interval expansion position). It was happening. In other words, when performing the operation of engaging the protrusions 41 and 41 with the grooves 11 and 11 at the above-described interval expansion position, the protrusions 41 and 41 are engaged with the grooves 11 and 11 at another position where the operation is completed. Thus, the movement of reducing the distance H between the engaging portions 8 and 8 facing each other is restricted at the distance expansion position. For this reason, it has been difficult to engage the protrusions 41, 41 of the connecting member 3 with the grooves 11, 11 of the engaging portions 8, 8.
また連結部材３がポリエチレン等の柔らかい樹脂から形成されていることで、仮に上記間隔拡大位置で、連結部材３の突起４１，４１を強引に溝１１，１１に押し込んだとしても、突起４１，４１が外向きに撓むことで、連結部材３が係合部８，８の間隔Ｈを縮めるものとならず、その結果、係合部８，８の間隔Ｈが、大きくなったまま、設計値にならないことが生じ得る。 Further, since the connecting member 3 is formed of a soft resin such as polyethylene, even if the protrusions 41 and 41 of the connecting member 3 are forcibly pushed into the grooves 11 and 11 at the position where the distance is enlarged, the protrusions 41 and 41 are provided. , The connecting member 3 does not reduce the interval H between the engaging portions 8 and 8, and as a result, the design value is maintained while the interval H between the engaging portions 8 and 8 remains large. It can happen that
本発明は、上記した問題に着目してなされたものであり、その目的は、空洞構造物の内部で並設される二つのライニング体を連結する方法であって、二つのライニング体を確実且つ簡便に連結可能な連結方法を提供することである。 The present invention has been made paying attention to the above-described problems, and an object of the present invention is a method of connecting two lining bodies arranged side by side inside a hollow structure, in which the two lining bodies are securely and It is to provide a connection method that can be easily connected.
本発明の第１観点に係る連結方法は、空洞構造物の内部で並設される二つのライニング体を連結する方法であって、前記空洞構造物の内部において、二つのライニング体を並設する並設工程と、留め具を用いて前記二つのライニング体を仮留めする仮留め工程と、連結部材を用いて前記二つのライニング体を連結する連結工程とを有し、前記ライニング体は、本体としての筒状体を備え、当該筒状体の軸方向の両端には係合部が形成されており、前記係合部は、前記筒状体の周方向に延びる第一溝及び第二溝を構成するものであり、前記第一溝は前記筒状体の径方向外側に開口し、前記第二溝は前記筒状体の径方向内側に開口し、前記並設工程では、前記二つのライニング体が、前記空洞構造物の長さ方向に間隔をあけて位置し、且つ、一の前記ライニング体の一端にある前記係合部と、二の前記ライニング体の他端にある前記係合部とが相対するように、前記二つのライニング体が並設され、
前記留め具は、金属から形成されるものであって、基板と、当該基板から突出する一対の第一突起とを有し、前記仮留め工程では、前記ライニング体の周方向の複数の位置で、前記一対の第一突起を、前記相対する二つの係合部の前記第一溝に係合させることが行われ、前記連結部材は、帯材と、帯材から突出する一対の第二突起とを有し、前記連結工程では、前記相対する二つの係合部の外側において前記連結部材を前記ライニング体の周方向に延ばしながら、前記一対の第二突起を前記相対する２つの係合部の第二溝に係合させることが行われる。
A connecting method according to a first aspect of the present invention is a method for connecting two lining bodies arranged in parallel inside a hollow structure, wherein the two lining bodies are arranged in parallel inside the hollow structure. A parallel installation step, a temporary fastening step of temporarily fastening the two lining bodies using a fastener, and a connecting step of connecting the two lining bodies using a connecting member, wherein the lining body is a main body And an engaging portion is formed at both ends in the axial direction of the cylindrical body, and the engaging portion includes a first groove and a second groove extending in the circumferential direction of the cylindrical body. The first groove opens to the outside in the radial direction of the cylindrical body, the second groove opens to the inside in the radial direction of the cylindrical body, and in the parallel arrangement step, the two grooves The lining bodies are spaced apart in the length direction of the hollow structure, and And the engagement portion at one end of the serial lining member, such that the engagement portion is relative to the other end of the secondary of the lining member, the two lining member is arranged,
The fastener is made of metal and has a substrate and a pair of first protrusions protruding from the substrate, and in the temporary fastening step, at a plurality of positions in the circumferential direction of the lining body. The pair of first protrusions are engaged with the first grooves of the two opposing engaging portions, and the connecting member includes a band member and a pair of second protrusions protruding from the band member. And, in the connecting step, the pair of second protrusions are made to face the two engaging portions while extending the connecting member in the circumferential direction of the lining body outside the two engaging portions facing each other. The second groove is engaged.
好ましくは、前記筒状体の内面には、前記筒状体の径方向内側に突出する複数のリブが形成されており、前記複数のリブは、前記筒状体の軸方向に間隔をあけて設けられるものであって、それぞれ前記筒状体の周方向に延びる。 Preferably, a plurality of ribs protruding radially inward of the cylindrical body are formed on the inner surface of the cylindrical body, and the plurality of ribs are spaced apart in the axial direction of the cylindrical body. Each is provided and extends in the circumferential direction of the cylindrical body.
また好ましくは、前記係合部は、前記筒状体の側縁から前記筒状体の軸方向外側に延びる第一延伸部と、前記第一延伸部の先端から前記筒状体の径方向外側に延びる第二延伸部と、前記第二延伸部の先端から前記筒状体の軸方向外側に延びる第三延伸部と、前記第三延伸部の先端から前記筒状体の径方向内側に延びる第四延伸部とを有し、前記第一溝は、前記第一延伸部と最端の前記リブとの間の空間によって構成され、前記第二溝は、前記第二延伸部と前記第四延伸部との間の空間によって構成される。 Preferably, the engaging portion includes a first extending portion that extends from a side edge of the cylindrical body to an outer side in the axial direction of the cylindrical body, and a radially outer side of the cylindrical body from the tip of the first extending portion. A second extending portion extending inward, a third extending portion extending outward in the axial direction of the cylindrical body from the tip of the second extending portion, and extending radially inward of the cylindrical body from the tip of the third extending portion A fourth extending portion, wherein the first groove is formed by a space between the first extending portion and the outermost rib, and the second groove is formed by the second extending portion and the fourth extending portion. It is comprised by the space between extending parts.
また好ましくは、前記連結部材の前記一対の第二突起の先端側は、内側に凸となるように湾曲し、前記第一溝の内面を構成する前記第二延伸部の表面は、前記第一突起の先端側に対応する凹面とされている。 Further preferably, the distal end sides of the pair of second protrusions of the connecting member are curved so as to protrude inward, and the surface of the second extending portion constituting the inner surface of the first groove is the first The concave surface corresponds to the tip side of the protrusion.
また好ましくは、前記ライニング体は、前記筒状体の周方向に延びる補強材と、前記補強材を前記筒状体に締結するための締結材とをさらに備え、前記補強材は、基板と、基板から突出する一対の側板とを有しており、一方の前記側板が前記筒状体と接し、前記基板が最端の前記リブと接するように配置され、前記締結材は、円筒状の筒状部材と、断面円形の棒状部材と、ナットとを備え、前記複数のリブのうち、前記最端のリブ以外の他の前記リブには第一貫通孔が形成され、前記最端のリブには第二貫通孔が形成され、前記補強材には第三貫通孔が形成され、前記筒状部材は、前記第一貫通孔に通されて、前記筒状部材の端面は、最端の前記リブに当接し、前記棒状部材は、前記筒状部材の内部に通されて、前記棒状部材の端側は、前記筒状部材から延び出るとともに、前記第三貫通孔及び前記第二貫通孔を順次通過して、前記最端のリブの外側へ突出し、前記最端のリブの外側に突出した前記棒状部材の端部に、前記ナットが締結されることで、前記ナットと前記筒状部材とによって、前記補強材と前記最端のリブとが挟み込まれる。 Preferably, the lining body further includes a reinforcing material extending in a circumferential direction of the cylindrical body, and a fastening material for fastening the reinforcing material to the cylindrical body, and the reinforcing material includes a substrate, A pair of side plates protruding from the substrate, one of the side plates being in contact with the cylindrical body, the substrate being in contact with the outermost rib, and the fastening material being a cylindrical tube A first through hole is formed in the rib other than the outermost rib among the plurality of ribs, and the outermost rib is formed on the outermost rib. A second through hole is formed, a third through hole is formed in the reinforcing member, the cylindrical member is passed through the first through hole, and an end surface of the cylindrical member is the outermost end Abutting on the rib, the rod-shaped member is passed through the tubular member, and the end side of the rod-shaped member is An end portion of the rod-shaped member that extends from the member and protrudes to the outside of the outermost rib through the third through hole and the second through hole, and protrudes to the outer side of the outermost rib. When the nut is fastened, the reinforcing member and the outermost rib are sandwiched between the nut and the tubular member.
本発明の第２観点に係るライニング体の連結構造は、空洞構造物の内部で並設される二つのライニング体と、留め具と、連結部材とを備える。前記ライニング体は、本体としての筒状体を備え、当該筒状体の軸方向の両端には係合部が形成されており、前記係合部は、前記筒状体の周方向に延びる第一溝及び第二溝を構成するものであり、前記第一溝は前記筒状体の径方向外側に開口し、前記第二溝は前記筒状体の径方向内側に開口し、前記二つのライニング体は、前記空洞構造物の長さ方向に間隔をあけて位置し、且つ、一の前記ライニング体の一端にある前記係合部と、二の前記ライニング体の他端にある前記係合部とが相対するように、並設され、前記留め具は、金属から形成されるものであって、基板と、当該基板から突出する一対の第一突起とを有し、前記ライニング体の周方向の複数の位置で、前記係止具の前記一対の第一突起が、前記相対する二つの係合部の前記第一溝に係合され、前記連結部材は、帯材と、帯材から突出する一対の第二突起とを有し、前記相対する二つの係合部の外側において前記連結部材が前記ライニング体の周方向に延ばされ、前記連結部材の前記一対の第二突起が前記相対する２つの係合部の第二溝に係合されている。 The connection structure of the lining body which concerns on the 2nd viewpoint of this invention is provided with the two lining bodies arranged in parallel inside a hollow structure, a fastener, and a connection member. The lining body includes a cylindrical body as a main body, and engaging portions are formed at both axial ends of the cylindrical body, and the engaging portions extend in a circumferential direction of the cylindrical body. The first groove is opened radially outward of the cylindrical body, the second groove is opened radially inward of the cylindrical body, and the two grooves are configured as one groove and a second groove. The lining body is located at an interval in the length direction of the hollow structure, and the engagement portion at one end of the one lining body and the engagement at the other end of the two lining bodies. The fasteners are made of metal and have a substrate and a pair of first protrusions protruding from the substrate, and the periphery of the lining body At a plurality of positions in the direction, the pair of first protrusions of the locking tool are the first of the two engaging portions facing each other. The connecting member includes a band member and a pair of second protrusions protruding from the band member, and the connecting member is disposed in a circumferential direction of the lining body outside the two opposing engaging portions. The pair of second protrusions of the connecting member are engaged with the second grooves of the two engaging portions facing each other.
本発明によれば、留め具の第一突起を、二つのライニング体の係合部の第一溝に係合させることが、ライニング体の周方向の複数の位置で行われることで、二つのライニング体の係合部の間隔をライニング体の周方向に一定にできる。これにより、連結部材の第二突起を係合部の第二溝に係合させる作業を、円滑にライニング体の周方向に進めることができ、上記作業のために、係合部の間隔を縮めることや、第二突起を強引に第二溝に押し込むことを要しない。したがって本発明によれば、二つのライニング体を連結することを確実且つ簡便に実現できる。 According to the present invention, the engagement of the first protrusions of the fasteners with the first grooves of the engaging portions of the two lining bodies is performed at a plurality of positions in the circumferential direction of the lining bodies. The interval between the engaging portions of the lining body can be made constant in the circumferential direction of the lining body. Thereby, the operation | work which engages the 2nd protrusion of a connection member with the 2nd groove | channel of an engaging part can be advanced smoothly in the circumferential direction of a lining body, and the space | interval of an engaging part is shortened for the said operation | work. It is not necessary to forcefully push the second protrusion into the second groove. Therefore, according to this invention, it can implement | achieve reliably and simply that two lining bodies are connected.
以下、本発明の実施形態について、図面を参照しながら説明する。なお以下では、従来技術との対応関係を明確にすべく、図９〜図１２に示すものと対応する構成には同一符号を付す。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Hereinafter, in order to clarify the correspondence with the prior art, the components corresponding to those shown in FIGS.
図１は、空洞構造物１００内にライニング体２を配置した状態を示す横断面図である。図２は、空洞構造物１００の内部で並設された２つのライニング体２，２が、本発明の連結方法によって連結された状態を示す縦断面図である（本発明のライニング体の連結構造を示す縦断面図である）。図３は、並設されたライニング体２，２の一部を拡大して示す縦断面図である。図３（ａ）はライニング体２，２が連結された状態を示し、図３（ｂ）は、ライニング体２，２が連結される以前の状態を示している。 FIG. 1 is a cross-sectional view showing a state in which the lining body 2 is disposed in the hollow structure 100. FIG. 2 is a longitudinal sectional view showing a state in which two lining bodies 2 and 2 arranged in parallel inside the hollow structure 100 are connected by the connecting method of the present invention (the connecting structure of the lining bodies of the present invention). Is a longitudinal sectional view). FIG. 3 is an enlarged longitudinal sectional view showing a part of the lining bodies 2 and 2 arranged side by side. FIG. 3A shows a state in which the lining bodies 2 and 2 are connected, and FIG. 3B shows a state before the lining bodies 2 and 2 are connected.
ライニング体２は、空洞構造物１００の内張りとして空洞構造物１００の内周面に沿って配置される。本発明において、「空洞構造物」とは、新設及び既設を問わず、また、断面形状が円形及び非円形を問わず、トンネルや下水管などの内部空間を有する構造物全般をいう。なお本実施形態では、空洞構造物１００は、略矩形状の断面を呈する下水管であり、角部１０２が面取りされている。 The lining body 2 is disposed along the inner peripheral surface of the cavity structure 100 as the lining of the cavity structure 100. In the present invention, the “cavity structure” refers to any structure having an internal space such as a tunnel or a sewer pipe regardless of whether it is newly installed or existing, and whether the cross-sectional shape is circular or non-circular. In the present embodiment, the hollow structure 100 is a sewer pipe having a substantially rectangular cross section, and the corner portion 102 is chamfered.
ライニング体２は、空洞構造物１００の長さ方向に複数並設される。施工時には、隣り合う２つのライニング体２，２が、留め具５０によって仮留めされた後、連結部材３によって連結される。 A plurality of lining bodies 2 are arranged side by side in the length direction of the hollow structure 100. At the time of construction, the two adjacent lining bodies 2 and 2 are temporarily fastened by the fastener 50 and then connected by the connecting member 3.
ライニング体２は、本体としての筒状体４と、筒状体４を補強するための補強材５と、補強材５を筒状体４に締結させるための締結材６とを備える。筒状体４は合成樹脂製である。補強材５及び締結材６は金属製である。 The lining body 2 includes a cylindrical body 4 as a main body, a reinforcing material 5 for reinforcing the cylindrical body 4, and a fastening material 6 for fastening the reinforcing material 5 to the cylindrical body 4. The cylindrical body 4 is made of synthetic resin. The reinforcing material 5 and the fastening material 6 are made of metal.
筒状体４は、空洞構造物１００に対応する略矩形の筒状を呈している。筒状体４の内面には、筒状体４の径方向外側に突出するリブ７が複数形成されている。 The cylindrical body 4 has a substantially rectangular cylindrical shape corresponding to the hollow structure 100. A plurality of ribs 7 projecting outward in the radial direction of the cylindrical body 4 are formed on the inner surface of the cylindrical body 4.
複数のリブ７は、筒状体４の軸方向に間隔をあけて設けられるものであり、それぞれ筒状体４の周方向に延びる。筒状体４の角部６０（図１参照）では、リブ７はＶ字状に切り欠かれる。以下では、筒状体４に形成される複数のリブ７のうち、最も端に位置するリブ７を「最端のリブ７Ａ」と記し、最端のリブ７Ａ以外のリブ７を「他のリブ７Ｂ」と記す。 The plurality of ribs 7 are provided at intervals in the axial direction of the cylindrical body 4, and each extend in the circumferential direction of the cylindrical body 4. At the corner 60 (see FIG. 1) of the tubular body 4, the rib 7 is cut out in a V shape. Hereinafter, among the plurality of ribs 7 formed on the cylindrical body 4, the rib 7 positioned at the end is referred to as “the end rib 7 </ b> A”, and the ribs 7 other than the end rib 7 </ b> A are referred to as “other ribs”. 7B ".
筒状体４の軸方向の両端には、係合部８，８が形成される。係合部８は、筒状体４の周方向に延びる第一溝１０及び第二溝１１を構成する（図３参照）。第一溝１０は、筒状体４の径方向外側に開口し、第二溝１１は、筒状体４の径方向内側に開口する。 Engaging portions 8 and 8 are formed at both ends of the cylindrical body 4 in the axial direction. The engaging portion 8 constitutes a first groove 10 and a second groove 11 extending in the circumferential direction of the cylindrical body 4 (see FIG. 3). The first groove 10 opens on the radially outer side of the cylindrical body 4, and the second groove 11 opens on the radially inner side of the cylindrical body 4.
具体的には、係合部８は、第一延伸部１２と、第二延伸部１３と、第三延伸部１４と、第四延伸部１５とを有する（図３（ｂ）参照）。第一延伸部１２は、筒状体４の側縁から筒状体４の軸方向外側に延びる。第二延伸部１３は、第一延伸部１２の先端から筒状体４の径方向外側に延びる。第三延伸部１４は、第二延伸部１３の先端から筒状体４の軸方向外側に延びる。第四延伸部１５は、第三延伸部１４の先端から筒状体４の径方向内側に延びる。第一溝１０は、第二延伸部１３と最端のリブ７Ａとの間の空間によって構成される。第二溝１１は、第二延伸部１３と第四延伸部１５との間の空間によって構成される。 Specifically, the engaging portion 8 includes a first extending portion 12, a second extending portion 13, a third extending portion 14, and a fourth extending portion 15 (see FIG. 3B). The first extending portion 12 extends from the side edge of the tubular body 4 to the outside in the axial direction of the tubular body 4. The second extending portion 13 extends from the distal end of the first extending portion 12 to the radially outer side of the tubular body 4. The third extending portion 14 extends from the tip of the second extending portion 13 to the outside in the axial direction of the cylindrical body 4. The fourth extending portion 15 extends from the tip of the third extending portion 14 to the inside in the radial direction of the cylindrical body 4. The first groove 10 is constituted by a space between the second extending portion 13 and the outermost rib 7A. The second groove 11 is constituted by a space between the second extending portion 13 and the fourth extending portion 15.
上記の筒状体４は、合成樹脂製の帯体（図示せず）を、空洞構造物１００の内周面に沿って一周させて、帯体の端部同士を締結部材（図示せず）を用いて連結することで形成される（上記帯体は、筒状体４とされる帯状部に、係合部８やリブ７が一体に形成されたものである）。なお帯体の端部同士を締結部材で連結することの代わりに、帯体の端部同士を熱融着してもよい。 In the cylindrical body 4, a belt made of synthetic resin (not shown) is made to make a round along the inner peripheral surface of the cavity structure 100, and the ends of the belt are fastened with fastening members (not shown). (The band is formed by integrally forming the engaging portion 8 and the rib 7 on the band-shaped portion that is the cylindrical body 4). In addition, you may heat-seal the edge parts of a strip | belt body instead of connecting the edge parts of a strip | belt body with a fastening member.
補強材５は、最端のリブ７Ａの内側で、筒状体４の周方向に延びるものである（「内側」は、筒状体４の軸方向内側を意味する）。補強材５は、コの字状の断面を呈し、基板２０と、基板２０から突出する一対の側板２１，２１とを有する（図３参照）。当該補強材５は、一方の側板２１が筒状体４と接し、基板２０が最端のリブ７Ａと接するように配置される。なお本実施形態のように、筒状体４が略矩形の筒状を呈する場合には、補強材５は、筒状体４の辺に沿う範囲と、筒状体４の角６０（図１参照）に沿う範囲とが、別々の部材（図示せず）から構成されて、これらの部材を組み合わせることで補強材５が形成される。 The reinforcing member 5 extends in the circumferential direction of the cylindrical body 4 inside the outermost rib 7A (“inner side” means the axially inner side of the cylindrical body 4). The reinforcing member 5 has a U-shaped cross section, and includes a substrate 20 and a pair of side plates 21 and 21 protruding from the substrate 20 (see FIG. 3). The reinforcing member 5 is arranged such that one side plate 21 is in contact with the cylindrical body 4 and the substrate 20 is in contact with the outermost rib 7A. When the tubular body 4 has a substantially rectangular tubular shape as in this embodiment, the reinforcing member 5 has a range along the side of the tubular body 4 and a corner 60 of the tubular body 4 (FIG. 1). The range along the reference) is composed of separate members (not shown), and the reinforcing material 5 is formed by combining these members.
締結材６は、円筒状の筒状部材３０と、断面円形の棒状部材３１と、ナット３２とを備える。筒状体４に形成される複数のリブ７のうち、最端のリブ７Ａ以外の他のリブ７Ｂには、筒状部材３０を通すための第一貫通孔３３が形成される（図３参照）。最端のリブ７Ａには、棒状部材３１を通すための第二貫通孔３４が形成される。補強材５の基板２０には、棒状部材３１を通すための第三貫通孔３５が形成される。筒状部材３０は、他のリブＢの各々の第一貫通孔３３に通されて、筒状部材３０の端面は、最端のリブ７Ａに当接する。棒状部材３１は、筒状部材３０の内部に通される。棒状部材３１の端側は、筒状部材３０から延び出るとともに、第三貫通孔３５及び第二貫通孔３４を順次通過し、最端のリブ７Ａの外側へ突出する（「外側」は、筒状体４の軸方向外側を意味する）。そして当該最端のリブ７Ａの外側に突出した棒状部材３１の端部に、ナット３２が締結されることで、ナット３２と筒状部材３０とによって、補強材５と最端のリブ７Ａとが挟み込まれる。これにより、補強材５が筒状体４に締結される。また上記のように補強材５が締結された状態では、最端のリブ７Ａは、補強材５によって、第一溝１０を拡大させる変位が規制されたものとなる。なお本実施形態では補強材５の全周を固定するために、締結材６による締結が筒状体４の周方向の複数の位置で行われる（図１参照）。すなわち、上記の第一貫通孔３３・第二貫通孔３４・第三貫通孔３５は、筒状体４の周方向の複数の位置に形成されているとともに、当該複数の位置の各々で、筒状部材３０を第一貫通孔３３に通し、棒状部材３１を第三貫通孔３５・第二貫通孔３４に通し、リブ７Ａの外側に突出した棒状部材３１の端部にナット３２を締結することが行われる。 The fastening material 6 includes a cylindrical tubular member 30, a rod-shaped member 31 having a circular cross section, and a nut 32. Of the plurality of ribs 7 formed in the tubular body 4, the rib 7B other than the outermost rib 7A is formed with a first through hole 33 for passing the tubular member 30 (see FIG. 3). ). A second through hole 34 for allowing the rod-shaped member 31 to pass therethrough is formed in the outermost rib 7A. The substrate 20 of the reinforcing member 5 is formed with a third through hole 35 through which the rod-shaped member 31 passes. The cylindrical member 30 is passed through the first through holes 33 of the other ribs B, and the end surface of the cylindrical member 30 abuts on the outermost rib 7A. The rod-shaped member 31 is passed through the cylindrical member 30. The end side of the rod-shaped member 31 extends from the cylindrical member 30, and sequentially passes through the third through hole 35 and the second through hole 34, and protrudes to the outer side of the outermost rib 7A ("outer" It means the outside in the axial direction of the body 4). The nut 32 is fastened to the end of the rod-shaped member 31 protruding outside the outermost rib 7A, so that the reinforcing member 5 and the outermost rib 7A are formed by the nut 32 and the tubular member 30. It is caught. Thereby, the reinforcing material 5 is fastened to the cylindrical body 4. Further, in the state in which the reinforcing member 5 is fastened as described above, the displacement of the outermost rib 7 </ b> A is restricted by the reinforcing member 5 to enlarge the first groove 10. In this embodiment, in order to fix the entire circumference of the reinforcing member 5, fastening with the fastening member 6 is performed at a plurality of positions in the circumferential direction of the cylindrical body 4 (see FIG. 1). That is, the first through hole 33, the second through hole 34, and the third through hole 35 are formed at a plurality of positions in the circumferential direction of the cylindrical body 4, and at each of the plurality of positions, a cylinder The rod-shaped member 30 is passed through the first through-hole 33, the rod-shaped member 31 is passed through the third through-hole 35 and the second through-hole 34, and the nut 32 is fastened to the end of the rod-shaped member 31 protruding outside the rib 7A. Is done.
連結部材３は、図１２や図１３に示したものである。連結部材３は、ポリエチレン等の合成樹脂から製造されるものであって、帯材４０と、一対の第二突起４１，４１と、複数のリブ４２とを有する。帯材４０の長さは、筒状体４の周方向の長さと同等とされる。第二突起４１，４１やリブ４２は、帯材４０の一方の表面から突出するものであり、帯材４０の長さ方向に延びる。第二突起４１，４１は、帯材４０の幅方向の両端に形成される。リブ４２は、第二突起４１，４１の間に形成されており、連結部材３の剛性を高める機能を有する。なお図１２や図１３では、２つのリブ４２を帯材４０に形成する例を示しているが、リブ４２の数は、帯材４０の幅等に応じて、任意の数に設定され得る。 The connecting member 3 is the one shown in FIGS. The connecting member 3 is manufactured from a synthetic resin such as polyethylene, and includes a belt member 40, a pair of second protrusions 41 and 41, and a plurality of ribs 42. The length of the strip 40 is equal to the circumferential length of the cylindrical body 4. The second protrusions 41, 41 and the rib 42 protrude from one surface of the band member 40 and extend in the length direction of the band member 40. The second protrusions 41 and 41 are formed at both ends in the width direction of the strip 40. The rib 42 is formed between the second protrusions 41 and 41 and has a function of increasing the rigidity of the connecting member 3. 12 and 13 show an example in which the two ribs 42 are formed on the band member 40, the number of ribs 42 may be set to an arbitrary number depending on the width of the band member 40 and the like.
次に、隣り合うライニング体２，２を連結する方法を説明する。 Next, a method for connecting adjacent lining bodies 2 and 2 will be described.
まず、空洞構造物１００の内部において、二つのライニング体２，２を並設する並設工程が実施される。この際には図４に示すように、二つのライニング体２，２が、空洞構造物１００の長さ方向に間隔をあけて位置し、且つ、一のライニング体２の一端にある係合部８と、二のライニング体２の他端にある係合部８とが相対するように、二つのライニング体２，２が並設される。以下、上記相対する「一のライニング体２の一端にある係合部８」と、「二のライニング体２の他端にある係合部８」との総称として、「相対する係合部８，８」と記す。 First, in the hollow structure 100, a side-by-side process for arranging two lining bodies 2 and 2 side by side is performed. In this case, as shown in FIG. 4, the two lining bodies 2, 2 are positioned at an interval in the length direction of the hollow structure 100, and the engaging portion is located at one end of the one lining body 2. The two lining bodies 2 and 2 are juxtaposed so that 8 and the engaging portion 8 at the other end of the second lining body 2 face each other. Hereinafter, the above-mentioned “engagement portion 8 at one end of one lining body 2” and “engagement portion 8 at the other end of second lining body 2” are collectively referred to as “opposing engagement portion 8”. , 8 ”.
次に図５に示すように、留め具５０を用いて、二つのライニング体２，２を仮留めする仮留め工程が実施される。図６に示すように、留め具５０は、基板５１と、基板５１から突出する一対の第一突起５２，５２とを有しており、ステンレス、鉄、バネ鋼、アルミ合金等の金属から形成される。仮留め工程では、ライニング体２，２の周方向の複数の位置で、一対の第一突起５２，５２を、相対する２つの係合部８，８の第一溝１０，１０に係合させることが行われる。例えば、ライニング体２，２の周方向に９０°の角度間隔をあけた４つの位置で、第一突起５２，５２を、係合部８，８の第一溝１０，１０に係合させることが行われる。 Next, as shown in FIG. 5, a temporary fastening step of temporarily fastening the two lining bodies 2, 2 using the fastener 50 is performed. As shown in FIG. 6, the fastener 50 has a substrate 51 and a pair of first protrusions 52, 52 protruding from the substrate 51, and is formed from a metal such as stainless steel, iron, spring steel, aluminum alloy or the like. Is done. In the temporary fastening step, the pair of first protrusions 52 and 52 are engaged with the first grooves 10 and 10 of the two opposing engaging portions 8 and 8 at a plurality of circumferential positions of the lining bodies 2 and 2. Is done. For example, the first protrusions 52 and 52 are engaged with the first grooves 10 and 10 of the engaging portions 8 and 8 at four positions spaced by 90 ° in the circumferential direction of the lining bodies 2 and 2. Is done.
なお図６や図７に示すように、第一突起５２の先端側５２ａは、内側に凸となるように湾曲している（上記の「内側」は、「第一突起５２，５２が相対する方向における内側」を意味する）。また、第一溝１０の内面を構成する第二延伸部１３の表面１０ａは、第一突起５２の先端側５２ａに対応する凹面とされている。以上の特徴から、図７（ａ），図７（ｂ）に示すように、第一突起５２の先端側５２ａが第一溝１０の入口を通過する際には、係合部８が弾性変形して、第一溝１０の入口の幅が大きくなる。そして、第一突起５２の先端側５２ａが第一溝１０の奥側に到達した際には、第一突起５２の先端側５２ａが第二延伸部１３の表面１０ａに係合し、係合部８，８が弾性復帰することで第一溝１０の入口の幅が小さくなる。これにより、第一突起５２が第一溝１０から抜けることが防止される。また上述したように、補強材５によって、第一溝１０を拡大させる最端のリブ７Ａの変位が規制されることからも、第一突起５２が第一溝１０から抜けることが防止される。 As shown in FIGS. 6 and 7, the tip side 52a of the first protrusion 52 is curved so as to protrude inward (the above “inner side” means “the first protrusions 52 and 52 are opposed to each other”. Meaning "inside in direction"). Further, the surface 10 a of the second extending portion 13 constituting the inner surface of the first groove 10 is a concave surface corresponding to the tip side 52 a of the first protrusion 52. From the above characteristics, as shown in FIGS. 7A and 7B, when the distal end side 52a of the first protrusion 52 passes through the inlet of the first groove 10, the engaging portion 8 is elastically deformed. And the width | variety of the entrance of the 1st groove | channel 10 becomes large. When the distal end side 52a of the first protrusion 52 reaches the inner side of the first groove 10, the distal end side 52a of the first protrusion 52 engages with the surface 10a of the second extending portion 13, and the engaging portion The width | variety of the inlet_port | entrance of the 1st groove | channel 10 becomes small by 8 and 8 elastically returning. Thereby, the first protrusion 52 is prevented from coming out of the first groove 10. Further, as described above, since the displacement of the outermost rib 7 </ b> A that enlarges the first groove 10 is restricted by the reinforcing member 5, the first protrusion 52 is prevented from coming out of the first groove 10.
上記の仮留め工程が実施された後では、図８に示すように、連結部材３を用いて二つのライニング体２，２を連結する連結工程が実施される。この際には、相対する２つの係合部８，８の内側で、連結部材３をライニング体２，２の周方向に延ばしながら、連結部材３の第二突起４１，４１を、相対する２つの係合部８，８の第二溝１１，１１に係合させることが行われる（上記の「内側」は、筒状体４の径方向内側を意味する）。そして、連結部材３をライニング体２，２の周方向に延ばした状態で、連結部材３の端部同士を締結部材（図示せず）で連結することで、連結部材３がライニング体２，２に沿う筒状とされる。なお、上記連結部材３の端部同士を締結部材で連結することの代わりに、連結部材３の端部同士を熱融着してもよい。また上記の連結工程は、例えば特開2016-210105号公報に開示されるライニング装置を用いて実施され得る。 After the temporary fixing step is performed, a connecting step of connecting the two lining bodies 2 and 2 using the connecting member 3 is performed as shown in FIG. At this time, while extending the connecting member 3 in the circumferential direction of the lining bodies 2 and 2 inside the two opposing engaging portions 8 and 8, the second protrusions 41 and 41 of the connecting member 3 are opposed to each other. Engagement with the second grooves 11 and 11 of the two engaging portions 8 and 8 is performed (the above “inner side” means the radially inner side of the cylindrical body 4). And in the state which extended the connection member 3 in the circumferential direction of the lining bodies 2 and 2, the connection member 3 connects the edge parts of a connection member 3 with a fastening member (not shown), and the connection member 3 becomes the lining bodies 2 and 2 It is made into the cylinder shape along. In addition, you may heat-seal the edge parts of the connection member 3 instead of connecting the edge parts of the said connection member 3 with a fastening member. Further, the above connecting step can be performed using, for example, a lining device disclosed in Japanese Patent Laid-Open No. 2016-210105.
以上で二つのライニング体２，２を連結する作業が完了する。そして以上の作業が隣り合う２つのライニング体２，２の組毎に繰り返されることで、空洞構造物１００の長さ方向に複数のライニング体２が並設された状態となる。その後、ライニング体２や連結部材３の外面と、空洞構造物１００の内面との間の隙間にセメントミルクなどの裏込め材１０３（図１，図２）を充填することで、内張り施工が完了する。 Thus, the operation of connecting the two lining bodies 2 and 2 is completed. And the above operation | work is repeated for every group of two adjacent lining bodies 2 and 2, and it will be in the state by which the several lining body 2 was arranged in parallel by the length direction of the cavity structure 100. FIG. After that, filling the gap between the outer surface of the lining body 2 or the connecting member 3 and the inner surface of the hollow structure 100 with a backfilling material 103 (FIGS. 1 and 2) such as cement milk is completed. To do.
以上説明した本実施形態によれば、連結工程以前の仮留め工程において、留め具５０の第一突起５２，５２を、相対する２つの係合部８，８の第一溝１０，１０に係合させることが、ライニング体２，２の周方向の複数の位置で行われる。このため連結工程の以前において、相対する２つの係合部８，８の間隔がライニング体２，２の周方向に一定になる。これにより連結工程で、連結部材３の第二突起４１，４１を係合部８，８の第二溝１１，１１に係合させる作業を、円滑にライニング体２，２の周方向に進めることができ、上記作業のために、係合部８，８の間隔を縮めることや、突起４１，４１を強引に溝１１，１１に押し込むことを要しない。したがって本実施形態によれば、二つのライニング体２，２を連結することを確実且つ簡便に実現できる。なお、ライニング体２，２の周方向に等間隔となる複数の位置で、留め具５０の第一突起５２，５２を相対する係合部８，８の第一溝１０，１０に係合させることが好ましい。このようにすることで、より確実に係合部８，８の間隔をライニング体２，２の周方向に一定にできる。 According to the present embodiment described above, the first protrusions 52 and 52 of the fastener 50 are engaged with the first grooves 10 and 10 of the two engaging portions 8 and 8 facing each other in the temporary fastening step before the connecting step. The joining is performed at a plurality of positions in the circumferential direction of the lining bodies 2 and 2. For this reason, before the connecting step, the distance between the two engaging portions 8 and 8 facing each other is constant in the circumferential direction of the lining bodies 2 and 2. Thus, in the connecting step, the operation of engaging the second protrusions 41, 41 of the connecting member 3 with the second grooves 11, 11 of the engaging portions 8, 8 is smoothly advanced in the circumferential direction of the lining bodies 2, 2. Therefore, it is not necessary to reduce the interval between the engaging portions 8 and 8 and forcibly push the protrusions 41 and 41 into the grooves 11 and 11 for the above operation. Therefore, according to this embodiment, it is possible to reliably and simply connect the two lining bodies 2 and 2. The first protrusions 52 and 52 of the fastener 50 are engaged with the first grooves 10 and 10 of the opposing engaging portions 8 and 8 at a plurality of positions at equal intervals in the circumferential direction of the lining bodies 2 and 2. It is preferable. By doing in this way, the space | interval of the engaging parts 8 and 8 can be made constant in the circumferential direction of the lining bodies 2 and 2 more reliably.
また上述したように、第一突起５２の先端側５２ａが湾曲し、第一溝１０の内面を構成する第二延伸部１３の表面１０ａが、第一突起５２の先端側５２ａに対応した凹面とされていることや、補強材５によって第一溝１０を拡大させる最端のリブ７Ａの変位が規制されることで、第一突起５２が第一溝１０から抜けることが防止される。このため確実に、相対する２つの係合部８，８の間隔をライニング体２，２の周方向に一定にすることができる。 Further, as described above, the front end side 52 a of the first protrusion 52 is curved, and the surface 10 a of the second extending portion 13 constituting the inner surface of the first groove 10 is a concave surface corresponding to the front end side 52 a of the first protrusion 52. The displacement of the outermost rib 7 </ b> A that enlarges the first groove 10 by the reinforcing material 5 is restricted, so that the first protrusion 52 is prevented from coming out of the first groove 10. For this reason, the interval between the two engaging portions 8 and 8 facing each other can be surely made constant in the circumferential direction of the lining bodies 2 and 2.
以上、本発明の一実施形態について説明したが、本発明は上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない限りにおいて種々の変更が可能である。 As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning of this invention.
例えば、第一突起５２の先端側５２ａを内側に湾曲させることの代わりに、第一突起５２の先端側５２ａを厚肉とすることで、第一突起５２の先端側５２ａを内側に凸となるように突出させてもよい。この場合でも、第二延伸部１３の表面１０ａを、第一突起５２の先端側５２ａに対応した凹面とすることで、第一突起５２が第一溝１０から抜けることを防止できる。 For example, instead of curving the front end side 52a of the first protrusion 52 inward, the front end side 52a of the first protrusion 52 is convex inward by making the front end side 52a of the first protrusion 52 thick. You may make it protrude like. Even in this case, it is possible to prevent the first protrusion 52 from coming out of the first groove 10 by making the surface 10 a of the second extending portion 13 a concave surface corresponding to the tip side 52 a of the first protrusion 52.
また、リブ７や補強材５や締結材６は、必ずしも必要ではなく、省略されてもよい。この場合でも、留め具５０の第一突起２２，２２を係合部８，８の第一溝１０，１０に係合させることで、連結工程で、連結部材３の第二突起４１，４１を第二溝１１，１１に係合させる作業を、確実且つ簡便に、ライニング体２，２の周方向に進めることができる。なお筒状体４にリブ７を設ければ、筒状体４の径方向の剛性を高めることができる。また補強材５を設ければ筒状体４を軸方向に補強できる。 Moreover, the rib 7, the reinforcing material 5, and the fastening material 6 are not necessarily required and may be omitted. Even in this case, by engaging the first protrusions 22 and 22 of the fastener 50 with the first grooves 10 and 10 of the engaging portions 8 and 8, the second protrusions 41 and 41 of the connecting member 3 are connected in the connecting step. The operation of engaging with the second grooves 11 and 11 can be advanced in the circumferential direction of the lining bodies 2 and 2 reliably and simply. In addition, if the rib 7 is provided in the cylindrical body 4, the radial rigidity of the cylindrical body 4 can be improved. If the reinforcing member 5 is provided, the cylindrical body 4 can be reinforced in the axial direction.
２ ライニング体
３ 連結部材
４ 筒状体
５ 補強材
６ 締結材
７ リブ
７Ａ 最端のリブ
７Ｂ 他のリブ
８ 係合部
１０ 第一溝
１０ａ 第二延伸部の表面（第一溝の内面）
１１ 第二溝
１２ 第一延伸部
１３ 第二延伸部
１４ 第三延伸部
１５ 第四延伸部
２０ 基板
２１ 側板
３０ 筒状部材
３１ 棒状部材
３２ ナット
３３ 第一貫通孔
３４ 第二貫通孔
３５ 第三貫通孔
４０ 帯材
４１ 第二突起
４２ リブ
５０ 留め具
５１ 基板
５２ 第一突起
５２ａ 第一突起の先端側
１００ 空洞構造物
2 Lining body 3 Connecting member 4 Tubular body 5 Reinforcing material 6 Fastening material 7 Rib 7A Endmost rib 7B Other rib 8 Engaging portion 10 First groove 10a Surface of second extending portion (inner surface of first groove)
11 Second groove 12 First extending portion 13 Second extending portion 14 Third extending portion 15 Fourth extending portion 20 Substrate 21 Side plate 30 Tubular member 31 Bar member 32 Nut 33 First through hole 34 Second through hole 35 Third Through-hole 40 Band material 41 Second projection 42 Rib 50 Fastener 51 Substrate 52 First projection 52a First projection tip side 100 Cavity structure
本発明は、下水管などの空洞構造物の内周面に沿って内張りされるライニング体の連結方法及び連結構造に関する。 The present invention relates to a connecting method and a connecting structure for a lining body lined along an inner peripheral surface of a hollow structure such as a sewer pipe.
従来、下水管などの空洞構造物を補修・補強する方法として、図９に示すように、空洞構造物１００の内周面に沿ってライニング体２を内張りする工法が提案されている（特許文献１参照）。ライニング体２は、空洞構造物１００の長さ方向に複数並設されるものである。図９や図１０に示すように、隣り合う２つのライニング体２，２は、連結部材３を用いて連結される。 Conventionally, as a method of repairing / reinforcing a hollow structure such as a sewer pipe, a method of lining the lining body 2 along the inner peripheral surface of the hollow structure 100 has been proposed (Patent Document). 1). A plurality of the lining bodies 2 are arranged side by side in the length direction of the hollow structure 100. As shown in FIGS. 9 and 10, two adjacent lining bodies 2 and 2 are connected using a connecting member 3.
ライニング体２は、本体としての筒状体４を有しており、筒状体４の軸方向の両端には係合部８が形成される。係合部８は、筒状体４の周方向に延びる溝１１を構成するものであり、溝１１は筒状体４の径方向内側に開口する。 The lining body 2 has a cylindrical body 4 as a main body, and engaging portions 8 are formed at both ends of the cylindrical body 4 in the axial direction. The engaging portion 8 constitutes a groove 11 extending in the circumferential direction of the cylindrical body 4, and the groove 11 opens on the radially inner side of the cylindrical body 4.
ライニング体２，２を連結する際には、まず、空洞構造物１００の内部で、二つのライニング体２，２を並設する並設工程が実施される。この際には図１１に示すように、二つのライニング体２，２が空洞構造物１００の長さ方向に所定の間隔をあけて位置し、且つ、一のライニング体２の一端にある係合部８と、二のライニング体２の他端にある係合部８とが相対するように、二つのライニング体２，２が並設される。以下、相対する「一のライニング体２，２の一端にある係合部８」と「二のライニング体２，２の他端にある係合部８」との総称として、「相対する係合部８，８」と記す。 When connecting the lining bodies 2, 2, first, a side-by-side process is performed in which the two lining bodies 2, 2 are juxtaposed inside the hollow structure 100. In this case, as shown in FIG. 11, the two lining bodies 2, 2 are positioned at a predetermined interval in the length direction of the hollow structure 100 and are engaged at one end of the one lining body 2. The two lining bodies 2 and 2 are arranged side by side so that the part 8 and the engaging part 8 at the other end of the second lining body 2 face each other. Hereinafter, the opposing “engagement portion 8 at one end of one lining body 2, 2” and “engagement portion 8 at the other end of second lining body 2, 2” are collectively referred to as “opposing engagement”. Part 8, 8 ".
ついで図９や図１０に示すように、連結部材３を用いて、二つのライニング体２，２を連結する連結工程が実施される。図１２は連結部材３を示す斜視図である（図１２では連結部材３の一部の図示を省略している）。図１３は連結部材３の断面図である。連結部材３は、ポリエチレン等の樹脂から形成されるものであり、帯材４０や、帯材４０の表面から突出する一対の突起４１，４１を有している（符号４２については後述する）。 Next, as shown in FIGS. 9 and 10, a connecting step of connecting the two lining bodies 2, 2 is performed using the connecting member 3. FIG. 12 is a perspective view showing the connecting member 3 (a part of the connecting member 3 is not shown in FIG. 12). FIG. 13 is a cross-sectional view of the connecting member 3. The connecting member 3 is formed from a resin such as polyethylene, and has a band member 40 and a pair of protrusions 41 and 41 protruding from the surface of the band member 40 (reference numeral 42 will be described later).
上記連結工程では、相対する係合部８，８の内側において、連結部材３を、二つのライニング体２，２の周方向（ライニング体２，２が備える筒状体４，４の周方向）に延ばしながら、連結部材３の突起４１，４１を、相対する係合部８，８の溝１１，１１に係合させることが行われる（図９，図１０参照）。すなわち、突起４１，４１を溝１１，１１に係合させる作業が、ライニング体２，２の周方向に進められる。 In the connecting step, the connecting member 3 is arranged in the circumferential direction of the two lining bodies 2 and 2 (in the circumferential direction of the cylindrical bodies 4 and 4 provided in the lining bodies 2 and 2) inside the opposing engaging portions 8 and 8. The protrusions 41 and 41 of the connecting member 3 are engaged with the grooves 11 and 11 of the opposing engaging portions 8 and 8 (see FIGS. 9 and 10). That is, the operation of engaging the protrusions 41 and 41 with the grooves 11 and 11 is advanced in the circumferential direction of the lining bodies 2 and 2.
ところで上記従来の連結方法では、作業の先行位置で、連結部材３の突起４１，４１を相対する係合部８，８の溝１１，１１に押し込み係合させると、その反発から、いまだ突起４１，４１を溝１１，１１に係合させていない位置で、相対する係合部８，８の間隔Ｈ（図１１参照）が設計値よりも大きくなることがあった。そしてこの場合には、上記係合部８，８の間隔Ｈが大きくなった位置（以下、間隔拡大位置）で、突起４１，４１を溝１１，１１に係合させることが困難になる事態が生じていた。つまり上記間隔拡大位置で突起４１，４１を溝１１，１１に係合させる作業を行う際には、作業が完了した別の位置で突起４１，４１が溝１１，１１に係合していることで、上記間隔拡大位置において、相対する係合部８，８の間隔Ｈを縮める動きが規制される。このため連結部材３の突起４１，４１を係合部８，８の溝１１，１１に係合させることが困難になっていた。 By the way, in the conventional connecting method, when the protrusions 41 and 41 of the connecting member 3 are pushed into the grooves 11 and 11 of the opposing engaging portions 8 and 8 at the preceding position of the work, the protrusion 41 still remains due to the repulsion. , 41 are not engaged with the grooves 11, 11, the distance H (see FIG. 11) between the opposing engaging portions 8, 8 may be larger than the design value. In this case, it is difficult to engage the protrusions 41 and 41 with the grooves 11 and 11 at a position where the interval H between the engaging portions 8 and 8 is increased (hereinafter referred to as an interval expansion position). It was happening. In other words, when performing the operation of engaging the protrusions 41 and 41 with the grooves 11 and 11 at the above-described interval expansion position, the protrusions 41 and 41 are engaged with the grooves 11 and 11 at another position where the operation is completed. Thus, the movement of reducing the distance H between the engaging portions 8 and 8 facing each other is restricted at the distance expansion position. For this reason, it has been difficult to engage the protrusions 41, 41 of the connecting member 3 with the grooves 11, 11 of the engaging portions 8, 8.
また連結部材３がポリエチレン等の柔らかい樹脂から形成されていることで、仮に上記間隔拡大位置で、連結部材３の突起４１，４１を強引に溝１１，１１に押し込んだとしても、突起４１，４１が外向きに撓むことで、連結部材３が係合部８，８の間隔Ｈを縮めるものとならず、その結果、係合部８，８の間隔Ｈが、大きくなったまま、設計値にならないことが生じ得る。 Further, since the connecting member 3 is formed of a soft resin such as polyethylene, even if the protrusions 41 and 41 of the connecting member 3 are forcibly pushed into the grooves 11 and 11 at the position where the distance is enlarged, the protrusions 41 and 41 are provided. , The connecting member 3 does not reduce the interval H between the engaging portions 8 and 8, and as a result, the design value is maintained while the interval H between the engaging portions 8 and 8 remains large. It can happen that
本発明は、上記した問題に着目してなされたものであり、その目的は、空洞構造物の内部で並設される二つのライニング体を連結する方法であって、二つのライニング体を確実且つ簡便に連結可能な連結方法を提供することである。 The present invention has been made paying attention to the above-described problems, and an object of the present invention is a method of connecting two lining bodies arranged side by side inside a hollow structure, in which the two lining bodies are securely and It is to provide a connection method that can be easily connected.
本発明の第１観点に係る連結方法は、空洞構造物の内部で並設される二つのライニング体を連結する方法であって、前記空洞構造物の内部において、二つのライニング体を並設する並設工程と、留め具を用いて前記二つのライニング体を仮留めする仮留め工程と、連結部材を用いて前記二つのライニング体を連結する連結工程とを有し、前記ライニング体は、本体としての筒状体を備え、当該筒状体の軸方向の両端には係合部が形成されており、前記係合部は、前記筒状体の周方向に延びる第一溝及び第二溝を構成するものであり、前記第一溝は前記筒状体の径方向外側に開口し、前記第二溝は前記筒状体の径方向内側に開口し、前記並設工程では、前記二つのライニング体が、前記空洞構造物の長さ方向に間隔をあけて位置し、且つ、一の前記ライニング体の一端にある前記係合部と、二の前記ライニング体の他端にある前記係合部とが相対するように、前記二つのライニング体が並設され、
前記留め具は、金属から形成されるものであって、基板と、当該基板から突出する一対の第一突起とを有し、前記仮留め工程では、前記ライニング体の周方向の複数の位置で、前記一対の第一突起を、前記相対する二つの係合部の前記第一溝に係合させることが行われ、前記連結部材は、帯材と、帯材から突出する一対の第二突起とを有し、前記連結工程では、前記相対する二つの係合部の外側において前記連結部材を前記ライニング体の周方向に延ばしながら、前記一対の第二突起を前記相対する２つの係合部の第二溝に係合させることが行われる。
A connecting method according to a first aspect of the present invention is a method for connecting two lining bodies arranged in parallel inside a hollow structure, wherein the two lining bodies are arranged in parallel inside the hollow structure. A parallel installation step, a temporary fastening step of temporarily fastening the two lining bodies using a fastener, and a connecting step of connecting the two lining bodies using a connecting member, wherein the lining body is a main body And an engaging portion is formed at both ends in the axial direction of the cylindrical body, and the engaging portion includes a first groove and a second groove extending in the circumferential direction of the cylindrical body. The first groove opens to the outside in the radial direction of the cylindrical body, the second groove opens to the inside in the radial direction of the cylindrical body, and in the parallel arrangement step, the two grooves The lining bodies are spaced apart in the length direction of the hollow structure, and And the engagement portion at one end of the serial lining member, such that the engagement portion is relative to the other end of the secondary of the lining member, the two lining member is arranged,
The fastener is made of metal and has a substrate and a pair of first protrusions protruding from the substrate, and in the temporary fastening step, at a plurality of positions in the circumferential direction of the lining body. The pair of first protrusions are engaged with the first grooves of the two opposing engaging portions, and the connecting member includes a band member and a pair of second protrusions protruding from the band member. And, in the connecting step, the pair of second protrusions are made to face the two engaging portions while extending the connecting member in the circumferential direction of the lining body outside the two engaging portions facing each other. The second groove is engaged.
好ましくは、前記筒状体の外面には、前記筒状体の径方向内側に突出する複数のリブが形成されており、前記複数のリブは、前記筒状体の軸方向に間隔をあけて設けられるものであって、それぞれ前記筒状体の周方向に延びる。 Preferably, a plurality of ribs projecting radially inward of the cylindrical body are formed on the outer surface of the cylindrical body, and the plurality of ribs are spaced apart in the axial direction of the cylindrical body. Each is provided and extends in the circumferential direction of the cylindrical body.
また好ましくは、前記係合部は、前記筒状体の側縁から前記筒状体の軸方向外側に延びる第一延伸部と、前記第一延伸部の先端から前記筒状体の径方向外側に延びる第二延伸部と、前記第二延伸部の先端から前記筒状体の軸方向外側に延びる第三延伸部と、前記第三延伸部の先端から前記筒状体の径方向内側に延びる第四延伸部とを有し、前記第一溝は、前記第一延伸部と最端の前記リブとの間の空間によって構成され、前記第二溝は、前記第二延伸部と前記第四延伸部との間の空間によって構成される。 Preferably, the engaging portion includes a first extending portion that extends from a side edge of the cylindrical body to an outer side in the axial direction of the cylindrical body, and a radially outer side of the cylindrical body from the tip of the first extending portion. A second extending portion extending inward, a third extending portion extending outward in the axial direction of the cylindrical body from the tip of the second extending portion, and extending radially inward of the cylindrical body from the tip of the third extending portion A fourth extending portion, wherein the first groove is formed by a space between the first extending portion and the outermost rib, and the second groove is formed by the second extending portion and the fourth extending portion. It is comprised by the space between extending parts.
また好ましくは、前記連結部材の前記一対の第二突起の先端側は、内側に凸となるように湾曲し、前記第一溝の内面を構成する前記第二延伸部の表面は、前記第一突起の先端側に対応する凹面とされている。 Further preferably, the distal end sides of the pair of second protrusions of the connecting member are curved so as to protrude inward, and the surface of the second extending portion constituting the inner surface of the first groove is the first The concave surface corresponds to the tip side of the protrusion.
また好ましくは、前記ライニング体は、前記筒状体の周方向に延びる補強材と、前記補強材を前記筒状体に締結するための締結材とをさらに備え、前記補強材は、基板と、基板から突出する一対の側板とを有しており、一方の前記側板が前記筒状体と接し、前記基板が最端の前記リブと接するように配置され、前記締結材は、円筒状の筒状部材と、断面円形の棒状部材と、ナットとを備え、前記複数のリブのうち、前記最端のリブ以外の他の前記リブには第一貫通孔が形成され、前記最端のリブには第二貫通孔が形成され、前記補強材には第三貫通孔が形成され、前記筒状部材は、前記第一貫通孔に通されて、前記筒状部材の端面は、最端の前記リブに当接し、前記棒状部材は、前記筒状部材の内部に通されて、前記棒状部材の端側は、前記筒状部材から延び出るとともに、前記第三貫通孔及び前記第二貫通孔を順次通過して、前記最端のリブの外側へ突出し、前記最端のリブの外側に突出した前記棒状部材の端部に、前記ナットが締結されることで、前記ナットと前記筒状部材とによって、前記補強材と前記最端のリブとが挟み込まれる。 Preferably, the lining body further includes a reinforcing material extending in a circumferential direction of the cylindrical body, and a fastening material for fastening the reinforcing material to the cylindrical body, and the reinforcing material includes a substrate, A pair of side plates protruding from the substrate, one of the side plates being in contact with the cylindrical body, the substrate being in contact with the outermost rib, and the fastening material being a cylindrical tube A first through hole is formed in the rib other than the outermost rib among the plurality of ribs, and the outermost rib is formed on the outermost rib. A second through hole is formed, a third through hole is formed in the reinforcing member, the cylindrical member is passed through the first through hole, and an end surface of the cylindrical member is the outermost end Abutting on the rib, the rod-shaped member is passed through the tubular member, and the end side of the rod-shaped member is An end portion of the rod-shaped member that extends from the member and protrudes to the outside of the outermost rib through the third through hole and the second through hole, and protrudes to the outer side of the outermost rib. When the nut is fastened, the reinforcing member and the outermost rib are sandwiched between the nut and the tubular member.
本発明の第２観点に係るライニング体の連結構造は、空洞構造物の内部で並設される二つのライニング体と、留め具と、連結部材とを備える。前記ライニング体は、本体としての筒状体を備え、当該筒状体の軸方向の両端には係合部が形成されており、前記係合部は、前記筒状体の周方向に延びる第一溝及び第二溝を構成するものであり、前記第一溝は前記筒状体の径方向外側に開口し、前記第二溝は前記筒状体の径方向内側に開口し、前記二つのライニング体は、前記空洞構造物の長さ方向に間隔をあけて位置し、且つ、一の前記ライニング体の一端にある前記係合部と、二の前記ライニング体の他端にある前記係合部とが相対するように、並設され、前記留め具は、金属から形成されるものであって、基板と、当該基板から突出する一対の第一突起とを有し、前記ライニング体の周方向の複数の位置で、前記係止具の前記一対の第一突起が、前記相対する二つの係合部の前記第一溝に係合され、前記連結部材は、帯材と、帯材から突出する一対の第二突起とを有し、前記相対する二つの係合部の外側において前記連結部材が前記ライニング体の周方向に延ばされ、前記連結部材の前記一対の第二突起が前記相対する２つの係合部の第二溝に係合されている。 The connection structure of the lining body which concerns on the 2nd viewpoint of this invention is provided with the two lining bodies arranged in parallel inside a hollow structure, a fastener, and a connection member. The lining body includes a cylindrical body as a main body, and engaging portions are formed at both axial ends of the cylindrical body, and the engaging portions extend in a circumferential direction of the cylindrical body. The first groove is opened radially outward of the cylindrical body, the second groove is opened radially inward of the cylindrical body, and the two grooves are configured as one groove and a second groove. The lining body is located at an interval in the length direction of the hollow structure, and the engagement portion at one end of the one lining body and the engagement at the other end of the two lining bodies. The fasteners are made of metal and have a substrate and a pair of first protrusions protruding from the substrate, and the periphery of the lining body At a plurality of positions in the direction, the pair of first protrusions of the locking tool are the first of the two engaging portions facing each other. The connecting member includes a band member and a pair of second protrusions protruding from the band member, and the connecting member is disposed in a circumferential direction of the lining body outside the two opposing engaging portions. The pair of second protrusions of the connecting member are engaged with the second grooves of the two engaging portions facing each other.
本発明によれば、留め具の第一突起を、二つのライニング体の係合部の第一溝に係合させることが、ライニング体の周方向の複数の位置で行われることで、二つのライニング体の係合部の間隔をライニング体の周方向に一定にできる。これにより、連結部材の第二突起を係合部の第二溝に係合させる作業を、円滑にライニング体の周方向に進めることができ、上記作業のために、係合部の間隔を縮めることや、第二突起を強引に第二溝に押し込むことを要しない。したがって本発明によれば、二つのライニング体を連結することを確実且つ簡便に実現できる。 According to the present invention, the engagement of the first protrusions of the fasteners with the first grooves of the engaging portions of the two lining bodies is performed at a plurality of positions in the circumferential direction of the lining bodies. The interval between the engaging portions of the lining body can be made constant in the circumferential direction of the lining body. Thereby, the operation | work which engages the 2nd protrusion of a connection member with the 2nd groove | channel of an engaging part can be advanced smoothly in the circumferential direction of a lining body, and the space | interval of an engaging part is shortened for the said operation | work. It is not necessary to forcefully push the second protrusion into the second groove. Therefore, according to this invention, it can implement | achieve reliably and simply that two lining bodies are connected.
以下、本発明の実施形態について、図面を参照しながら説明する。なお以下では、従来技術との対応関係を明確にすべく、図９〜図１２に示すものと対応する構成には同一符号を付す。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Hereinafter, in order to clarify the correspondence with the prior art, the components corresponding to those shown in FIGS.
図１は、空洞構造物１００内にライニング体２を配置した状態を示す横断面図である。図２は、空洞構造物１００の内部で並設された２つのライニング体２，２が、本発明の連結方法によって連結された状態を示す縦断面図である（本発明のライニング体の連結構造を示す縦断面図である）。図３は、並設されたライニング体２，２の一部を拡大して示す縦断面図である。図３（ａ）はライニング体２，２が連結された状態を示し、図３（ｂ）は、ライニング体２，２が連結される以前の状態を示している。 FIG. 1 is a cross-sectional view showing a state in which the lining body 2 is disposed in the hollow structure 100. FIG. 2 is a longitudinal sectional view showing a state in which two lining bodies 2 and 2 arranged in parallel inside the hollow structure 100 are connected by the connecting method of the present invention (the connecting structure of the lining bodies of the present invention). Is a longitudinal sectional view). FIG. 3 is an enlarged longitudinal sectional view showing a part of the lining bodies 2 and 2 arranged side by side. FIG. 3A shows a state in which the lining bodies 2 and 2 are connected, and FIG. 3B shows a state before the lining bodies 2 and 2 are connected.
ライニング体２は、空洞構造物１００の内張りとして空洞構造物１００の内周面に沿って配置される。本発明において、「空洞構造物」とは、新設及び既設を問わず、また、断面形状が円形及び非円形を問わず、トンネルや下水管などの内部空間を有する構造物全般をいう。なお本実施形態では、空洞構造物１００は、略矩形状の断面を呈する下水管であり、角部１０２が面取りされている。 The lining body 2 is disposed along the inner peripheral surface of the cavity structure 100 as the lining of the cavity structure 100. In the present invention, the “cavity structure” refers to any structure having an internal space such as a tunnel or a sewer pipe regardless of whether it is newly installed or existing, and whether the cross-sectional shape is circular or non-circular. In the present embodiment, the hollow structure 100 is a sewer pipe having a substantially rectangular cross section, and the corner portion 102 is chamfered.
ライニング体２は、空洞構造物１００の長さ方向に複数並設される。施工時には、隣り合う２つのライニング体２，２が、留め具５０によって仮留めされた後、連結部材３によって連結される。 A plurality of lining bodies 2 are arranged side by side in the length direction of the hollow structure 100. At the time of construction, the two adjacent lining bodies 2 and 2 are temporarily fastened by the fastener 50 and then connected by the connecting member 3.
ライニング体２は、本体としての筒状体４と、筒状体４を補強するための補強材５と、補強材５を筒状体４に締結させるための締結材６とを備える。筒状体４は合成樹脂製である。補強材５及び締結材６は金属製である。 The lining body 2 includes a cylindrical body 4 as a main body, a reinforcing material 5 for reinforcing the cylindrical body 4, and a fastening material 6 for fastening the reinforcing material 5 to the cylindrical body 4. The cylindrical body 4 is made of synthetic resin. The reinforcing material 5 and the fastening material 6 are made of metal.
筒状体４は、空洞構造物１００に対応する略矩形の筒状を呈している。筒状体４の外面には、筒状体４の径方向外側に突出するリブ７が複数形成されている。 The cylindrical body 4 has a substantially rectangular cylindrical shape corresponding to the hollow structure 100. A plurality of ribs 7 are formed on the outer surface of the cylindrical body 4 so as to protrude outward in the radial direction of the cylindrical body 4.
複数のリブ７は、筒状体４の軸方向に間隔をあけて設けられるものであり、それぞれ筒状体４の周方向に延びる。筒状体４の角部６０（図１参照）では、リブ７はＶ字状に切り欠かれる。以下では、筒状体４に形成される複数のリブ７のうち、最も端に位置するリブ７を「最端のリブ７Ａ」と記し、最端のリブ７Ａ以外のリブ７を「他のリブ７Ｂ」と記す。 The plurality of ribs 7 are provided at intervals in the axial direction of the cylindrical body 4, and each extend in the circumferential direction of the cylindrical body 4. At the corner 60 (see FIG. 1) of the tubular body 4, the rib 7 is cut out in a V shape. Hereinafter, among the plurality of ribs 7 formed on the cylindrical body 4, the rib 7 positioned at the end is referred to as “the end rib 7 </ b> A”, and the ribs 7 other than the end rib 7 </ b> A are referred to as “other ribs”. 7B ".
筒状体４の軸方向の両端には、係合部８，８が形成される。係合部８は、筒状体４の周方向に延びる第一溝１０及び第二溝１１を構成する（図３参照）。第一溝１０は、筒状体４の径方向外側に開口し、第二溝１１は、筒状体４の径方向内側に開口する。 Engaging portions 8 and 8 are formed at both ends of the cylindrical body 4 in the axial direction. The engaging portion 8 constitutes a first groove 10 and a second groove 11 extending in the circumferential direction of the cylindrical body 4 (see FIG. 3). The first groove 10 opens on the radially outer side of the cylindrical body 4, and the second groove 11 opens on the radially inner side of the cylindrical body 4.
具体的には、係合部８は、第一延伸部１２と、第二延伸部１３と、第三延伸部１４と、第四延伸部１５とを有する（図３（ｂ）参照）。第一延伸部１２は、筒状体４の側縁から筒状体４の軸方向外側に延びる。第二延伸部１３は、第一延伸部１２の先端から筒状体４の径方向外側に延びる。第三延伸部１４は、第二延伸部１３の先端から筒状体４の軸方向外側に延びる。第四延伸部１５は、第三延伸部１４の先端から筒状体４の径方向内側に延びる。第一溝１０は、第二延伸部１３と最端のリブ７Ａとの間の空間によって構成される。第二溝１１は、第二延伸部１３と第四延伸部１５との間の空間によって構成される。 Specifically, the engaging portion 8 includes a first extending portion 12, a second extending portion 13, a third extending portion 14, and a fourth extending portion 15 (see FIG. 3B). The first extending portion 12 extends from the side edge of the tubular body 4 to the outside in the axial direction of the tubular body 4. The second extending portion 13 extends from the distal end of the first extending portion 12 to the radially outer side of the tubular body 4. The third extending portion 14 extends from the tip of the second extending portion 13 to the outside in the axial direction of the cylindrical body 4. The fourth extending portion 15 extends from the tip of the third extending portion 14 to the inside in the radial direction of the cylindrical body 4. The first groove 10 is constituted by a space between the second extending portion 13 and the outermost rib 7A. The second groove 11 is constituted by a space between the second extending portion 13 and the fourth extending portion 15.
上記の筒状体４は、合成樹脂製の帯体（図示せず）を、空洞構造物１００の内周面に沿って一周させて、帯体の端部同士を締結部材（図示せず）を用いて連結することで形成される（上記帯体は、筒状体４とされる帯状部に、係合部８やリブ７が一体に形成されたものである）。なお帯体の端部同士を締結部材で連結することの代わりに、帯体の端部同士を熱融着してもよい。 In the cylindrical body 4, a belt made of synthetic resin (not shown) is made to make a round along the inner peripheral surface of the cavity structure 100, and the ends of the belt are fastened with fastening members (not shown). (The band is formed by integrally forming the engaging portion 8 and the rib 7 on the band-shaped portion that is the cylindrical body 4). In addition, you may heat-seal the edge parts of a strip | belt body instead of connecting the edge parts of a strip | belt body with a fastening member.
補強材５は、最端のリブ７Ａの内側で、筒状体４の周方向に延びるものである（「内側」は、筒状体４の軸方向内側を意味する）。補強材５は、コの字状の断面を呈し、基板２０と、基板２０から突出する一対の側板２１，２１とを有する（図３参照）。当該補強材５は、一方の側板２１が筒状体４と接し、基板２０が最端のリブ７Ａと接するように配置される。なお本実施形態のように、筒状体４が略矩形の筒状を呈する場合には、補強材５は、筒状体４の辺に沿う範囲と、筒状体４の角６０（図１参照）に沿う範囲とが、別々の部材（図示せず）から構成されて、これらの部材を組み合わせることで補強材５が形成される。 The reinforcing member 5 extends in the circumferential direction of the cylindrical body 4 inside the outermost rib 7A (“inner side” means the axially inner side of the cylindrical body 4). The reinforcing member 5 has a U-shaped cross section, and includes a substrate 20 and a pair of side plates 21 and 21 protruding from the substrate 20 (see FIG. 3). The reinforcing member 5 is arranged such that one side plate 21 is in contact with the cylindrical body 4 and the substrate 20 is in contact with the outermost rib 7A. When the tubular body 4 has a substantially rectangular tubular shape as in this embodiment, the reinforcing member 5 has a range along the side of the tubular body 4 and a corner 60 of the tubular body 4 (FIG. 1). The range along the reference) is composed of separate members (not shown), and the reinforcing material 5 is formed by combining these members.
締結材６は、円筒状の筒状部材３０と、断面円形の棒状部材３１と、ナット３２とを備える。筒状体４に形成される複数のリブ７のうち、最端のリブ７Ａ以外の他のリブ７Ｂには、筒状部材３０を通すための第一貫通孔３３が形成される（図３参照）。最端のリブ７Ａには、棒状部材３１を通すための第二貫通孔３４が形成される。補強材５の基板２０には、棒状部材３１を通すための第三貫通孔３５が形成される。筒状部材３０は、他のリブＢの各々の第一貫通孔３３に通されて、筒状部材３０の端面は、最端のリブ７Ａに当接する。棒状部材３１は、筒状部材３０の内部に通される。棒状部材３１の端側は、筒状部材３０から延び出るとともに、第三貫通孔３５及び第二貫通孔３４を順次通過し、最端のリブ７Ａの外側へ突出する（「外側」は、筒状体４の軸方向外側を意味する）。そして当該最端のリブ７Ａの外側に突出した棒状部材３１の端部に、ナット３２が締結されることで、ナット３２と筒状部材３０とによって、補強材５と最端のリブ７Ａとが挟み込まれる。これにより、補強材５が筒状体４に締結される。また上記のように補強材５が締結された状態では、最端のリブ７Ａは、補強材５によって、第一溝１０を拡大させる変位が規制されたものとなる。なお本実施形態では補強材５の全周を固定するために、締結材６による締結が筒状体４の周方向の複数の位置で行われる（図１参照）。すなわち、上記の第一貫通孔３３・第二貫通孔３４・第三貫通孔３５は、筒状体４の周方向の複数の位置に形成されているとともに、当該複数の位置の各々で、筒状部材３０を第一貫通孔３３に通し、棒状部材３１を第三貫通孔３５・第二貫通孔３４に通し、リブ７Ａの外側に突出した棒状部材３１の端部にナット３２を締結することが行われる。 The fastening material 6 includes a cylindrical tubular member 30, a rod-shaped member 31 having a circular cross section, and a nut 32. Of the plurality of ribs 7 formed in the tubular body 4, the rib 7B other than the outermost rib 7A is formed with a first through hole 33 for passing the tubular member 30 (see FIG. 3). ). A second through hole 34 for allowing the rod-shaped member 31 to pass therethrough is formed in the outermost rib 7A. The substrate 20 of the reinforcing member 5 is formed with a third through hole 35 through which the rod-shaped member 31 passes. The cylindrical member 30 is passed through the first through holes 33 of the other ribs B, and the end surface of the cylindrical member 30 abuts on the outermost rib 7A. The rod-shaped member 31 is passed through the cylindrical member 30. The end side of the rod-shaped member 31 extends from the cylindrical member 30, and sequentially passes through the third through hole 35 and the second through hole 34, and protrudes to the outer side of the outermost rib 7A ("outer" It means the outside in the axial direction of the body 4). The nut 32 is fastened to the end of the rod-shaped member 31 protruding outside the outermost rib 7A, so that the reinforcing member 5 and the outermost rib 7A are formed by the nut 32 and the tubular member 30. It is caught. Thereby, the reinforcing material 5 is fastened to the cylindrical body 4. Further, in the state in which the reinforcing member 5 is fastened as described above, the displacement of the outermost rib 7 </ b> A is restricted by the reinforcing member 5 to enlarge the first groove 10. In this embodiment, in order to fix the entire circumference of the reinforcing member 5, fastening with the fastening member 6 is performed at a plurality of positions in the circumferential direction of the cylindrical body 4 (see FIG. 1). That is, the first through hole 33, the second through hole 34, and the third through hole 35 are formed at a plurality of positions in the circumferential direction of the cylindrical body 4, and at each of the plurality of positions, a cylinder The rod-shaped member 30 is passed through the first through-hole 33, the rod-shaped member 31 is passed through the third through-hole 35 and the second through-hole 34, and the nut 32 is fastened to the end of the rod-shaped member 31 protruding outside the rib 7A. Is done.
連結部材３は、図１２や図１３に示したものである。連結部材３は、ポリエチレン等の合成樹脂から製造されるものであって、帯材４０と、一対の第二突起４１，４１と、複数のリブ４２とを有する。帯材４０の長さは、筒状体４の周方向の長さと同等とされる。第二突起４１，４１やリブ４２は、帯材４０の一方の表面から突出するものであり、帯材４０の長さ方向に延びる。第二突起４１，４１は、帯材４０の幅方向の両端に形成される。リブ４２は、第二突起４１，４１の間に形成されており、連結部材３の剛性を高める機能を有する。なお図１２や図１３では、２つのリブ４２を帯材４０に形成する例を示しているが、リブ４２の数は、帯材４０の幅等に応じて、任意の数に設定され得る。 The connecting member 3 is the one shown in FIGS. The connecting member 3 is manufactured from a synthetic resin such as polyethylene, and includes a belt member 40, a pair of second protrusions 41 and 41, and a plurality of ribs 42. The length of the strip 40 is equal to the circumferential length of the cylindrical body 4. The second protrusions 41, 41 and the rib 42 protrude from one surface of the band member 40 and extend in the length direction of the band member 40. The second protrusions 41 and 41 are formed at both ends in the width direction of the strip 40. The rib 42 is formed between the second protrusions 41 and 41 and has a function of increasing the rigidity of the connecting member 3. 12 and 13 show an example in which the two ribs 42 are formed on the band member 40, the number of ribs 42 may be set to an arbitrary number depending on the width of the band member 40 and the like.
次に、隣り合うライニング体２，２を連結する方法を説明する。 Next, a method for connecting adjacent lining bodies 2 and 2 will be described.
まず、空洞構造物１００の内部において、二つのライニング体２，２を並設する並設工程が実施される。この際には図４に示すように、二つのライニング体２，２が、空洞構造物１００の長さ方向に間隔をあけて位置し、且つ、一のライニング体２の一端にある係合部８と、二のライニング体２の他端にある係合部８とが相対するように、二つのライニング体２，２が並設される。以下、上記相対する「一のライニング体２の一端にある係合部８」と、「二のライニング体２の他端にある係合部８」との総称として、「相対する係合部８，８」と記す。 First, in the hollow structure 100, a side-by-side process for arranging two lining bodies 2 and 2 side by side is performed. In this case, as shown in FIG. 4, the two lining bodies 2, 2 are positioned at an interval in the length direction of the hollow structure 100, and the engaging portion is located at one end of the one lining body 2. The two lining bodies 2 and 2 are juxtaposed so that 8 and the engaging portion 8 at the other end of the second lining body 2 face each other. Hereinafter, the above-mentioned “engagement portion 8 at one end of one lining body 2” and “engagement portion 8 at the other end of second lining body 2” are collectively referred to as “opposing engagement portion 8”. , 8 ”.
次に図５に示すように、留め具５０を用いて、二つのライニング体２，２を仮留めする仮留め工程が実施される。図６に示すように、留め具５０は、基板５１と、基板５１から突出する一対の第一突起５２，５２とを有しており、ステンレス、鉄、バネ鋼、アルミ合金等の金属から形成される。仮留め工程では、ライニング体２，２の周方向の複数の位置で、一対の第一突起５２，５２を、相対する２つの係合部８，８の第一溝１０，１０に係合させることが行われる。例えば、ライニング体２，２の周方向に９０°の角度間隔をあけた４つの位置で、第一突起５２，５２を、係合部８，８の第一溝１０，１０に係合させることが行われる。 Next, as shown in FIG. 5, a temporary fastening step of temporarily fastening the two lining bodies 2, 2 using the fastener 50 is performed. As shown in FIG. 6, the fastener 50 has a substrate 51 and a pair of first protrusions 52, 52 protruding from the substrate 51, and is formed from a metal such as stainless steel, iron, spring steel, aluminum alloy or the like. Is done. In the temporary fastening step, the pair of first protrusions 52 and 52 are engaged with the first grooves 10 and 10 of the two opposing engaging portions 8 and 8 at a plurality of circumferential positions of the lining bodies 2 and 2. Is done. For example, the first protrusions 52 and 52 are engaged with the first grooves 10 and 10 of the engaging portions 8 and 8 at four positions spaced by 90 ° in the circumferential direction of the lining bodies 2 and 2. Is done.
なお図６や図７に示すように、第一突起５２の先端側５２ａは、内側に凸となるように湾曲している（上記の「内側」は、「第一突起５２，５２が相対する方向における内側」を意味する）。また、第一溝１０の内面を構成する第二延伸部１３の表面１０ａは、第一突起５２の先端側５２ａに対応する凹面とされている。以上の特徴から、図７（ａ），図７（ｂ）に示すように、第一突起５２の先端側５２ａが第一溝１０の入口を通過する際には、係合部８が弾性変形して、第一溝１０の入口の幅が大きくなる。そして、第一突起５２の先端側５２ａが第一溝１０の奥側に到達した際には、第一突起５２の先端側５２ａが第二延伸部１３の表面１０ａに係合し、係合部８，８が弾性復帰することで第一溝１０の入口の幅が小さくなる。これにより、第一突起５２が第一溝１０から抜けることが防止される。また上述したように、補強材５によって、第一溝１０を拡大させる最端のリブ７Ａの変位が規制されることからも、第一突起５２が第一溝１０から抜けることが防止される。 As shown in FIGS. 6 and 7, the tip side 52a of the first protrusion 52 is curved so as to protrude inward (the above “inner side” means “the first protrusions 52 and 52 are opposed to each other”. Meaning "inside in direction"). Further, the surface 10 a of the second extending portion 13 constituting the inner surface of the first groove 10 is a concave surface corresponding to the tip side 52 a of the first protrusion 52. From the above characteristics, as shown in FIGS. 7A and 7B, when the distal end side 52a of the first protrusion 52 passes through the inlet of the first groove 10, the engaging portion 8 is elastically deformed. And the width | variety of the entrance of the 1st groove | channel 10 becomes large. When the distal end side 52a of the first protrusion 52 reaches the inner side of the first groove 10, the distal end side 52a of the first protrusion 52 engages with the surface 10a of the second extending portion 13, and the engaging portion The width | variety of the inlet_port | entrance of the 1st groove | channel 10 becomes small by 8 and 8 elastically returning. Thereby, the first protrusion 52 is prevented from coming out of the first groove 10. Further, as described above, since the displacement of the outermost rib 7 </ b> A that enlarges the first groove 10 is restricted by the reinforcing member 5, the first protrusion 52 is prevented from coming out of the first groove 10.
上記の仮留め工程が実施された後では、図８に示すように、連結部材３を用いて二つのライニング体２，２を連結する連結工程が実施される。この際には、相対する２つの係合部８，８の内側で、連結部材３をライニング体２，２の周方向に延ばしながら、連結部材３の第二突起４１，４１を、相対する２つの係合部８，８の第二溝１１，１１に係合させることが行われる（上記の「内側」は、筒状体４の径方向内側を意味する）。そして、連結部材３をライニング体２，２の周方向に延ばした状態で、連結部材３の端部同士を締結部材（図示せず）で連結することで、連結部材３がライニング体２，２に沿う筒状とされる。なお、上記連結部材３の端部同士を締結部材で連結することの代わりに、連結部材３の端部同士を熱融着してもよい。また上記の連結工程は、例えば特開2016-210105号公報に開示されるライニング装置を用いて実施され得る。 After the temporary fixing step is performed, a connecting step of connecting the two lining bodies 2 and 2 using the connecting member 3 is performed as shown in FIG. At this time, while extending the connecting member 3 in the circumferential direction of the lining bodies 2 and 2 inside the two opposing engaging portions 8 and 8, the second protrusions 41 and 41 of the connecting member 3 are opposed to each other. Engagement with the second grooves 11 and 11 of the two engaging portions 8 and 8 is performed (the above “inner side” means the radially inner side of the cylindrical body 4). And in the state which extended the connection member 3 in the circumferential direction of the lining bodies 2 and 2, the connection member 3 connects the edge parts of a connection member 3 with a fastening member (not shown), and the connection member 3 becomes the lining bodies 2 and 2 It is made into the cylinder shape along. In addition, you may heat-seal the edge parts of the connection member 3 instead of connecting the edge parts of the said connection member 3 with a fastening member. Further, the above connecting step can be performed using, for example, a lining device disclosed in Japanese Patent Laid-Open No. 2016-210105.
以上で二つのライニング体２，２を連結する作業が完了する。そして以上の作業が隣り合う２つのライニング体２，２の組毎に繰り返されることで、空洞構造物１００の長さ方向に複数のライニング体２が並設された状態となる。その後、ライニング体２や連結部材３の外面と、空洞構造物１００の内面との間の隙間にセメントミルクなどの裏込め材１０３（図１，図２）を充填することで、内張り施工が完了する。 Thus, the operation of connecting the two lining bodies 2 and 2 is completed. And the above operation | work is repeated for every group of two adjacent lining bodies 2 and 2, and it will be in the state by which the several lining body 2 was arranged in parallel by the length direction of the cavity structure 100. FIG. After that, filling the gap between the outer surface of the lining body 2 or the connecting member 3 and the inner surface of the hollow structure 100 with a backfilling material 103 (FIGS. 1 and 2) such as cement milk is completed. To do.
以上説明した本実施形態によれば、連結工程以前の仮留め工程において、留め具５０の第一突起５２，５２を、相対する２つの係合部８，８の第一溝１０，１０に係合させることが、ライニング体２，２の周方向の複数の位置で行われる。このため連結工程の以前において、相対する２つの係合部８，８の間隔がライニング体２，２の周方向に一定になる。これにより連結工程で、連結部材３の第二突起４１，４１を係合部８，８の第二溝１１，１１に係合させる作業を、円滑にライニング体２，２の周方向に進めることができ、上記作業のために、係合部８，８の間隔を縮めることや、突起４１，４１を強引に溝１１，１１に押し込むことを要しない。したがって本実施形態によれば、二つのライニング体２，２を連結することを確実且つ簡便に実現できる。なお、ライニング体２，２の周方向に等間隔となる複数の位置で、留め具５０の第一突起５２，５２を相対する係合部８，８の第一溝１０，１０に係合させることが好ましい。このようにすることで、より確実に係合部８，８の間隔をライニング体２，２の周方向に一定にできる。 According to the present embodiment described above, the first protrusions 52 and 52 of the fastener 50 are engaged with the first grooves 10 and 10 of the two engaging portions 8 and 8 facing each other in the temporary fastening step before the connecting step. The joining is performed at a plurality of positions in the circumferential direction of the lining bodies 2 and 2. For this reason, before the connecting step, the distance between the two engaging portions 8 and 8 facing each other is constant in the circumferential direction of the lining bodies 2 and 2. Thus, in the connecting step, the operation of engaging the second protrusions 41, 41 of the connecting member 3 with the second grooves 11, 11 of the engaging portions 8, 8 is smoothly advanced in the circumferential direction of the lining bodies 2, 2. Therefore, it is not necessary to reduce the interval between the engaging portions 8 and 8 and forcibly push the protrusions 41 and 41 into the grooves 11 and 11 for the above operation. Therefore, according to this embodiment, it is possible to reliably and simply connect the two lining bodies 2 and 2. The first protrusions 52 and 52 of the fastener 50 are engaged with the first grooves 10 and 10 of the opposing engaging portions 8 and 8 at a plurality of positions at equal intervals in the circumferential direction of the lining bodies 2 and 2. It is preferable. By doing in this way, the space | interval of the engaging parts 8 and 8 can be made constant in the circumferential direction of the lining bodies 2 and 2 more reliably.
また上述したように、第一突起５２の先端側５２ａが湾曲し、第一溝１０の内面を構成する第二延伸部１３の表面１０ａが、第一突起５２の先端側５２ａに対応した凹面とされていることや、補強材５によって第一溝１０を拡大させる最端のリブ７Ａの変位が規制されることで、第一突起５２が第一溝１０から抜けることが防止される。このため確実に、相対する２つの係合部８，８の間隔をライニング体２，２の周方向に一定にすることができる。 Further, as described above, the front end side 52 a of the first protrusion 52 is curved, and the surface 10 a of the second extending portion 13 constituting the inner surface of the first groove 10 is a concave surface corresponding to the front end side 52 a of the first protrusion 52. The displacement of the outermost rib 7 </ b> A that enlarges the first groove 10 by the reinforcing material 5 is restricted, so that the first protrusion 52 is prevented from coming out of the first groove 10. For this reason, the interval between the two engaging portions 8 and 8 facing each other can be surely made constant in the circumferential direction of the lining bodies 2 and 2.
以上、本発明の一実施形態について説明したが、本発明は上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない限りにおいて種々の変更が可能である。 As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning of this invention.
例えば、第一突起５２の先端側５２ａを内側に湾曲させることの代わりに、第一突起５２の先端側５２ａを厚肉とすることで、第一突起５２の先端側５２ａを内側に凸となるように突出させてもよい。この場合でも、第二延伸部１３の表面１０ａを、第一突起５２の先端側５２ａに対応した凹面とすることで、第一突起５２が第一溝１０から抜けることを防止できる。 For example, instead of curving the front end side 52a of the first protrusion 52 inward, the front end side 52a of the first protrusion 52 is convex inward by making the front end side 52a of the first protrusion 52 thick. You may make it protrude like. Even in this case, it is possible to prevent the first protrusion 52 from coming out of the first groove 10 by making the surface 10 a of the second extending portion 13 a concave surface corresponding to the tip side 52 a of the first protrusion 52.
また、リブ７や補強材５や締結材６は、必ずしも必要ではなく、省略されてもよい。この場合でも、留め具５０の第一突起２２，２２を係合部８，８の第一溝１０，１０に係合させることで、連結工程で、連結部材３の第二突起４１，４１を第二溝１１，１１に係合させる作業を、確実且つ簡便に、ライニング体２，２の周方向に進めることができる。なお筒状体４にリブ７を設ければ、筒状体４の径方向の剛性を高めることができる。また補強材５を設ければ筒状体４を軸方向に補強できる。 Moreover, the rib 7, the reinforcing material 5, and the fastening material 6 are not necessarily required and may be omitted. Even in this case, by engaging the first protrusions 22 and 22 of the fastener 50 with the first grooves 10 and 10 of the engaging portions 8 and 8, the second protrusions 41 and 41 of the connecting member 3 are connected in the connecting step. The operation of engaging with the second grooves 11 and 11 can be advanced in the circumferential direction of the lining bodies 2 and 2 reliably and simply. In addition, if the rib 7 is provided in the cylindrical body 4, the radial rigidity of the cylindrical body 4 can be improved. If the reinforcing member 5 is provided, the cylindrical body 4 can be reinforced in the axial direction.
２ ライニング体
３ 連結部材
４ 筒状体
５ 補強材
６ 締結材
７ リブ
７Ａ 最端のリブ
７Ｂ 他のリブ
８ 係合部
１０ 第一溝
１０ａ 第二延伸部の表面（第一溝の内面）
１１ 第二溝
１２ 第一延伸部
１３ 第二延伸部
１４ 第三延伸部
１５ 第四延伸部
２０ 基板
２１ 側板
３０ 筒状部材
３１ 棒状部材
３２ ナット
３３ 第一貫通孔
３４ 第二貫通孔
３５ 第三貫通孔
４０ 帯材
４１ 第二突起
４２ リブ
５０ 留め具
５１ 基板
５２ 第一突起
５２ａ 第一突起の先端側
１００ 空洞構造物
2 Lining body 3 Connecting member 4 Tubular body 5 Reinforcing material 6 Fastening material 7 Rib 7A Endmost rib 7B Other rib 8 Engaging portion 10 First groove 10a Surface of second extending portion (inner surface of first groove)
11 Second groove 12 First extending portion 13 Second extending portion 14 Third extending portion 15 Fourth extending portion 20 Substrate 21 Side plate 30 Tubular member 31 Bar member 32 Nut 33 First through hole 34 Second through hole 35 Third Through-hole 40 Band material 41 Second projection 42 Rib 50 Fastener 51 Substrate 52 First projection 52a First projection tip side 100 Cavity structure
Claims (6)
前記空洞構造物の内部において、二つのライニング体を並設する並設工程と、
留め具を用いて前記二つのライニング体を仮留めする仮留め工程と、
連結部材を用いて前記二つのライニング体を連結する連結工程とを有し、
前記ライニング体は、本体としての筒状体を備え、当該筒状体の軸方向の両端には係合部が形成されており、前記係合部は、前記筒状体の周方向に延びる第一溝及び第二溝を構成するものであり、前記第一溝は前記筒状体の径方向外側に開口し、前記第二溝は前記筒状体の径方向内側に開口し、
前記並設工程では、前記二つのライニング体が、前記空洞構造物の長さ方向に間隔をあけて位置し、且つ、一の前記ライニング体の一端にある前記係合部と、二の前記ライニング体の他端にある前記係合部とが相対するように、前記二つのライニング体が並設され、
前記留め具は、金属から形成されるものであって、基板と、当該基板から突出する一対の第一突起とを有し、
前記仮留め工程では、前記ライニング体の周方向の複数の位置で、前記一対の第一突起を、前記相対する二つの係合部の前記第一溝に係合させることが行われ、
前記連結部材は、帯材と、帯材から突出する一対の第二突起とを有し、
前記連結工程では、前記相対する二つの係合部の外側において前記連結部材を前記ライニング体の周方向に延ばしながら、前記一対の第二突起を前記相対する２つの係合部の第二溝に係合させることが行われる、連結方法。 A method of connecting two lining bodies arranged side by side inside a hollow structure,
Inside the hollow structure, a side-by-side step of juxtaposing two lining bodies,
A temporary fastening step of temporarily fastening the two lining bodies using a fastener;
A connecting step of connecting the two lining bodies using a connecting member,
The lining body includes a cylindrical body as a main body, and engaging portions are formed at both axial ends of the cylindrical body, and the engaging portions extend in a circumferential direction of the cylindrical body. A first groove and a second groove, wherein the first groove opens radially outward of the cylindrical body, the second groove opens radially inward of the cylindrical body,
In the side-by-side arrangement step, the two lining bodies are spaced apart in the length direction of the hollow structure, and the engaging portion at one end of the one lining body, and the two linings The two lining bodies are arranged side by side so that the engaging portion at the other end of the body is opposed.
The fastener is formed of a metal, and has a substrate and a pair of first protrusions protruding from the substrate,
In the temporary fastening step, the pair of first protrusions are engaged with the first grooves of the two opposing engaging portions at a plurality of positions in the circumferential direction of the lining body,
The connecting member has a band member and a pair of second protrusions protruding from the band member,
In the connecting step, the pair of second protrusions are formed in the second grooves of the two opposing engaging portions while extending the connecting member in the circumferential direction of the lining body outside the two engaging portions facing each other. A coupling method in which engaging is performed.
前記複数のリブは、前記筒状体の軸方向に間隔をあけて設けられるものであって、それぞれ前記筒状体の周方向に延びる請求項１に記載の連結方法。 On the inner surface of the cylindrical body, a plurality of ribs are formed protruding outward in the radial direction of the cylindrical body,
2. The connection method according to claim 1, wherein the plurality of ribs are provided at intervals in an axial direction of the cylindrical body and extend in a circumferential direction of the cylindrical body.
前記第一溝は、前記第一延伸部と最端の前記リブとの間の空間によって構成され、
前記第二溝は、前記第二延伸部と前記第四延伸部との間の空間によって構成される請求項２に記載の連結方法。 The engaging portion includes a first extending portion that extends outward in the axial direction of the cylindrical body from a side edge of the cylindrical body, and a second extending from the tip of the first extending portion to the radially outer side of the cylindrical body. An extending portion, a third extending portion extending outward in the axial direction of the cylindrical body from the distal end of the second extending portion, and a fourth extending portion extending radially inward of the cylindrical body from the distal end of the third extending portion And
The first groove is constituted by a space between the first extending portion and the endmost rib.
The connection method according to claim 2, wherein the second groove is formed by a space between the second extending portion and the fourth extending portion.
前記補強材は、基板と、基板から突出する一対の側板とを有しており、一方の前記側板が前記筒状体と接し、前記基板が最端の前記リブと接するように配置され、
前記締結材は、円筒状の筒状部材と、断面円形の棒状部材と、ナットとを備え、
前記複数のリブのうち、前記最端のリブ以外の他の前記リブには第一貫通孔が形成され、前記最端のリブには第二貫通孔が形成され、
前記補強材には第三貫通孔が形成され、
前記筒状部材は、前記第一貫通孔に通されて、前記筒状部材の端面は、最端の前記リブに当接し、
前記棒状部材は、前記筒状部材の内部に通されて、前記棒状部材の端側は、前記筒状部材から延び出るとともに、前記第三貫通孔及び前記第二貫通孔を順次通過して、前記最端のリブの外側へ突出し、
前記最端のリブの外側に突出した前記棒状部材の端部に、前記ナットが締結されることで、前記ナットと前記筒状部材とによって、前記補強材と前記最端のリブとが挟み込まれる請求項２乃至４のいずれかに記載の連結方法。 The lining body further includes a reinforcing material extending in a circumferential direction of the cylindrical body, and a fastening material for fastening the reinforcing material to the cylindrical body,
The reinforcing member has a substrate and a pair of side plates protruding from the substrate, one of the side plates is disposed so as to contact the cylindrical body, and the substrate is disposed so as to contact the outermost rib.
The fastening material includes a cylindrical tubular member, a rod-shaped member having a circular cross section, and a nut,
Of the plurality of ribs, a first through hole is formed in the rib other than the outermost rib, and a second through hole is formed in the outermost rib.
A third through hole is formed in the reinforcing material,
The cylindrical member is passed through the first through hole, and the end surface of the cylindrical member abuts on the outermost rib.
The rod-shaped member is passed through the tubular member, and the end side of the rod-shaped member extends from the tubular member and sequentially passes through the third through hole and the second through hole, Protrudes outside the outermost rib,
The reinforcing member and the endmost rib are sandwiched between the nut and the tubular member by fastening the nut to the end of the rod-like member protruding outside the endmost rib. The connection method according to claim 2.
留め具と、
連結部材とを備え、
前記ライニング体は、本体としての筒状体を備え、当該筒状体の軸方向の両端には係合部が形成されており、前記係合部は、前記筒状体の周方向に延びる第一溝及び第二溝を構成するものであり、前記第一溝は前記筒状体の径方向外側に開口し、前記第二溝は前記筒状体の径方向内側に開口し、
前記二つのライニング体は、前記空洞構造物の長さ方向に間隔をあけて位置し、且つ、一の前記ライニング体の一端にある前記係合部と、二の前記ライニング体の他端にある前記係合部とが相対するように、並設され、
前記留め具は、金属から形成されるものであって、基板と、当該基板から突出する一対の第一突起とを有し、
前記ライニング体の周方向の複数の位置で、前記係止具の前記一対の第一突起が、前記相対する二つの係合部の前記第一溝に係合され、
前記連結部材は、帯材と、帯材から突出する一対の第二突起とを有し、
前記相対する二つの係合部の外側において前記連結部材が前記ライニング体の周方向に延ばされ、前記連結部材の前記一対の第二突起が前記相対する２つの係合部の第二溝に係合されている、ライニング体の連結構造。 Two lining bodies juxtaposed inside the hollow structure;
With fasteners,
A connecting member,
The lining body includes a cylindrical body as a main body, and engaging portions are formed at both axial ends of the cylindrical body, and the engaging portions extend in a circumferential direction of the cylindrical body. A first groove and a second groove, wherein the first groove opens radially outward of the cylindrical body, the second groove opens radially inward of the cylindrical body,
The two lining bodies are spaced apart from each other in the length direction of the hollow structure, and are located at one end of the one lining body and at the other end of the second lining body. It is arranged side by side so that the engaging part is opposed to
The fastener is formed of a metal, and has a substrate and a pair of first protrusions protruding from the substrate,
At a plurality of positions in the circumferential direction of the lining body, the pair of first protrusions of the locking tool are engaged with the first grooves of the two engaging portions facing each other,
The connecting member has a band member and a pair of second protrusions protruding from the band member,
The connecting member is extended in the circumferential direction of the lining body outside the two opposing engaging portions, and the pair of second protrusions of the connecting member are formed in the second grooves of the two engaging portions facing each other. The connecting structure of the lining body engaged.
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| JP2022015805A (en) * | 2020-07-10 | 2022-01-21 | 株式会社大阪防水建設社 | Pipeline rehabilitation method and rehabilitation pipe |
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