JP2015045202A - Arch culvert and manufacturing method thereof - Google Patents

Arch culvert and manufacturing method thereof Download PDF

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JP2015045202A
JP2015045202A JP2013177901A JP2013177901A JP2015045202A JP 2015045202 A JP2015045202 A JP 2015045202A JP 2013177901 A JP2013177901 A JP 2013177901A JP 2013177901 A JP2013177901 A JP 2013177901A JP 2015045202 A JP2015045202 A JP 2015045202A
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arch
leg
members
culvert
leg members
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松田　学
Manabu Matsuda
松田　　学
寿人 篠原
Hisato Shinohara
寿人 篠原
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YAMAX KK
Yamax Corp
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YAMAX KK
Yamax Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an arch culvert and a manufacturing method thereof capable of slimming by reducing a cross section of a leg member, in the present invention.SOLUTION: An arch culvert A is assembled by connecting an arch part 1 formed by connecting a plurality of arch members 5, 6 and 7 formed in a circular arc shape and a leg part 2 composed of a pair of leg members 8 and 9 respectively connected to end parts of the arch members 6 and 7 by connection means 10. The connection means 10 is constituted of a plurality of guide pipes 12 respectively provided inside the arch members 5, 6 and 7 and the leg members 8 and 9 and a plurality of PC stranded wires 13 arranged and inserted into the guide pipes 12 and its end part is fixed to the leg members 8 and 9 by fixing means 14. The PC stranded wire 13 is derived downward from bottom surfaces 18 of the pair of leg members 8 and 9, and is fixed in the bottom surfaces 18 by the fixing means 14.

Description

本発明はアーチカルバートおよびその製造方法に関する。   The present invention relates to an arch culvert and a manufacturing method thereof.

頂部アーチ部材と、その左右の両端下部にそれぞれ接続される２つの側部アーチ部材と、その左右の両端下部にそれぞれ接続される２つの脚部材と、よりなるアーチカルバートおよびその組立施工方法が提案されている（特許文献1参照）。   Proposed is an arch culvert composed of a top arch member, two side arch members connected to the lower portions of the left and right ends, two leg members connected to the lower portions of the left and right ends, and an assembly method thereof. (See Patent Document 1).

特開２０１３−１３３５９３号公報JP 2013-133593 A

特許文献１記載のアーチカルバートは、脚部材の側面においてＰＣ撚線を定着しているため、ＰＣ撚線を曲げて配挿しているので、その緊張力による偏心モーメントが作用し、脚部材の断面が大きくなる。また、従来のアーチカルバートでは、アーチ部を先行して組み立ててから設置場所にて脚部の上に載置して接続する施工手順を採用することが一般的であることから、仮組状態のアーチ部を組み立てる際に支保工でサポートする必要があり、仮設費用が嵩むとともに現場管理の手間が増大し、工期が長期化してしまうという不都合もあった。   Since the arch culvert described in Patent Document 1 has the PC stranded wire fixed on the side surface of the leg member, the PC stranded wire is bent and inserted, and therefore an eccentric moment due to the tension acts, and the cross section of the leg member Becomes larger. Also, in the conventional arch culvert, it is common to adopt a construction procedure in which the arch part is assembled in advance and then placed on the leg part at the installation location and connected, so that the temporary assembly state When assembling the arch part, it is necessary to support it with a support work, which increases the temporary cost, increases the time and effort for site management, and increases the construction period.

本発明は、上記の問題を解決し、脚部材の断面を小さくできてスリム化することができ、施工効率を向上させることができるアーチカルバートおよびその製造方法を提供することを目的とする。   An object of the present invention is to provide an arch culvert that solves the above-described problems, can reduce the cross-section of the leg member and can be slimmed down, and can improve the construction efficiency, and a manufacturing method thereof.

本発明は上記課題に鑑みなされたものであり、請求項１に記載の発明のアーチカルバートは、
円弧状に形成された複数のアーチ部材を接続して形成されるアーチ部と、前記アーチ部材の端部にそれぞれ接続される一対の脚部材からなる脚部と、を連結手段で連結して組み付けられたアーチカルバートであって、
前記連結手段が、前記アーチ部材及び前記脚部材の内部にそれぞれ設けられた複数本の案内管と、該案内管内に配挿されて、その端部が前記脚部材に定着手段により定着される複数本のＰＣ撚線と、により構成され、
前記ＰＣ撚線は、前記一対の脚部材の底面から下方に導出され、該底面において前記定着手段により定着されている
ことを特徴とする。 This invention is made | formed in view of the said subject, The arch culvert of the invention of Claim 1 is the following.
An arch portion formed by connecting a plurality of arch members formed in an arc shape and a leg portion formed of a pair of leg members respectively connected to the end portions of the arch member are connected by connecting means and assembled. Arch culvert,
The connecting means is a plurality of guide pipes provided inside the arch member and the leg member, and a plurality of guide pipes are inserted into the guide pipe and the end portions thereof are fixed to the leg member by the fixing means. A PC twisted wire,
The PC twisted wire is led downward from the bottom surfaces of the pair of leg members, and fixed on the bottom surfaces by the fixing means.

請求項２に記載のアーチカルバートは、請求項１記載のアーチカルバートにおいて、前記ＰＣ撚線は、前記アーチ部材及び前記脚部材の各軸心に配置されていることを特徴とする。   The arch culvert according to claim 2 is the arch culvert according to claim 1, wherein the PC twisted wire is arranged at each axis of the arch member and the leg member.

請求項３に記載のアーチカルバートは、請求項１又は２記載のアーチカルバートにおいて、
前記脚部材は、上端部が前記アーチ部材の端部と同一の厚み及び同一の幅を有すると共に、下端部が前記上端部よりも大きな厚みと同一の幅を有し、 前記上端部から前記下端部に向かうほど厚みが大きくなるテーパーが設けられていることを特徴とする。 The arch culvert according to claim 3 is the arch culvert according to claim 1 or 2,
The leg member has an upper end portion having the same thickness and width as the end portion of the arch member, and a lower end portion having the same width and thickness as the upper end portion. A taper that increases in thickness toward the portion is provided.

請求項４に記載のアーチカルバートの製造方法は、
請求項１から３のいずれか１項に記載のアーチカルバートの製造方法であって、
前記アーチ部材及び前記脚部材を地面に伏倒した状態で仮組み付けを行う工程と、
前記仮組み付けされた前記アーチ部材及び前記脚部材における前記案内管にＰＣ撚線を挿通する工程と、
前記ＰＣ撚線を前記脚部材の底面に定着して前記アーチ部材及び前記脚部材を組み付ける工程と、
組み付けられた前記アーチ部材及び前記脚部材を吊り上げて、底版部の所に設置する工程と、
を含むことを特徴とする。 The manufacturing method of the arch culvert according to claim 4,
A method for producing an arch culvert according to any one of claims 1 to 3,
A step of temporarily assembling the arch member and the leg member in a state of lying down on the ground;
Inserting a PC twisted wire through the guide tube in the temporarily assembled arch member and leg member;
Fixing the PC twisted wire to the bottom surface of the leg member and assembling the arch member and the leg member;
Hoisting the assembled arch member and the leg member and installing at the bottom plate part; and
It is characterized by including.

請求項１記載の発明のアーチカルバートによれば、ＰＣ撚線は、一対の脚部材の底面から下方に導出され、該底面において定着手段により定着されているので、ＰＣ撚線を直線的に配置することができ、偏心モーメントが生じないので、脚部材の断面を小さくできスリム化することができる。また、アーチ部と脚部とを連結手段のＰＣ撚線によって連結することで、一体化したアーチ部及び脚部を設置場所に設置することができ、アーチ部を仮組みするための支保工が不要にでき、施工効率を向上させることができる。   According to the arch culvert of the invention of the first aspect, the PC stranded wire is led out from the bottom surface of the pair of leg members and fixed on the bottom surface by the fixing means. Since the eccentric moment does not occur, the cross-section of the leg member can be reduced and slimmed. Moreover, by connecting the arch part and the leg part by the PC twisted wire of the connecting means, the integrated arch part and the leg part can be installed at the installation location, and the support work for temporarily assembling the arch part is possible. It can be made unnecessary and the construction efficiency can be improved.

請求項２記載の発明のアーチカルバートによれば、ＰＣ撚線は、アーチ部材及び脚部材の各軸心に配置されているので、プレストレス導入をした場合も偏心が生じず、かつ脚部材の断面における応力が均等化されることにより、脚部材をさらにスリム化できる。   According to the arch culvert of the invention described in claim 2, since the PC stranded wire is arranged at each axial center of the arch member and the leg member, no eccentricity occurs even when prestress is introduced, and By equalizing the stress in the cross section, the leg member can be further slimmed.

請求項３記載の発明のアーチカルバートによれば、脚部材は、上端部がアーチ部材の端部と同一の厚み及び同一の幅を有すると共に、下端部が上端部よりも大きな厚みと同一の幅を有し、上端部から下端部に向かうほど厚みが大きくなるテーパーが設けられているので、従来よりもスリムなアーチカルバートが得られ、脚部材の軽量化を図ることができる。   According to the arch culvert of the invention of claim 3, the leg member has the same thickness and the same width as the end of the arch member at the upper end, and the same width as the thickness of the lower end larger than the upper end. Since a taper having a thickness that increases from the upper end portion toward the lower end portion is provided, an arch culvert that is slimmer than the conventional one can be obtained and the weight of the leg member can be reduced.

請求項４記載の発明のアーチカルバートの製造方法によれば、ＰＣ撚線を脚部材の底面に定着して、アーチ部材及び脚部材を組み付け、アーチ部材及び脚部材を吊り上げることで、組み付け時に脚部材に偏心モーメントが生じず、かつ吊り上げ時にはＰＣ撚線によってアーチ部材と脚部材とが一体化されているので、吊り上げ作業を効率的に実施することができるアーチカルバートが得られる。従って、アーチ部を仮組みするための支保工が不要にでき、現場管理及び仮設費用の削減を図るとともに、工期短縮による施工効率の向上が実現できる。   According to the method for manufacturing an arch culvert of the invention described in claim 4, the PC stranded wire is fixed to the bottom surface of the leg member, the arch member and the leg member are assembled, and the arch member and the leg member are lifted, so that the leg is assembled. An eccentric moment does not occur in the member, and since the arch member and the leg member are integrated by the PC twisted wire during lifting, an arch culvert capable of efficiently performing the lifting operation is obtained. Therefore, the support work for temporarily assembling the arch portion can be eliminated, and the site management and the temporary cost can be reduced, and the construction efficiency can be improved by shortening the construction period.

本発明のアーチカルバートの一実施形態の組立状態を示す断面図である。It is sectional drawing which shows the assembly state of one Embodiment of the arch culvert of this invention. 前記アーチカルバートの一実施形態の構成要素を説明する説明図であり、（Ａ）〜（Ｅ）は、それぞれ、アーチ部材（頭）、アーチ部材（肩）、脚部材、底版部材、間詰コンクリートを示す。It is explanatory drawing explaining the component of one Embodiment of the said arch culvert, (A)-(E) are respectively an arch member (head), an arch member (shoulder), a leg member, a bottom slab member, and filling concrete Indicates. 前記アーチカルバートの一実施形態において、３つのアーチ部材を結合した状態を示す斜視図である。FIG. 3 is a perspective view showing a state in which three arch members are coupled in an embodiment of the arch culvert. 前記アーチカルバートの一実施形態で使用されるＰＣ撚線を定着するための定着手段を示す拡大断面図である。It is an expanded sectional view which shows the fixing means for fixing PC twisted wire used in one Embodiment of the said arch culvert. 前記アーチカルバートの製造方法における緊張作業工程を示し、（Ａ）は平面図、（Ｂ）は正面図である。The tension work process in the manufacturing method of the said arch culvert is shown, (A) is a top view, (B) is a front view. 前記アーチカルバートの製造方法における製品反転工程を示す説明図である。It is explanatory drawing which shows the product inversion process in the manufacturing method of the said arch culvert. 前記アーチカルバートの製造方法における製品接合工程を示す説明図である。It is explanatory drawing which shows the product joining process in the manufacturing method of the said arch culvert. 前記アーチカルバートの製造方法における間詰め工程及びグラウト充填工程を示す説明図である。It is explanatory drawing which shows the space filling process and grout filling process in the manufacturing method of the said arch culvert. （Ａ），（Ｂ）は、それぞれ前記アーチカルバートの変形例を示す断面図である。(A), (B) is sectional drawing which shows the modification of the said arch culvert, respectively.

以下図面に従い、本発明の一実施形態について詳細に説明する。   Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

本実施形態では、アーチカルバートＡは、鉄筋コンクリート製のアーチ部１、脚部２及び底版部３と、間詰コンクリート４と、から構成されている。アーチ部１は、アーチ部材（頭）５と、アーチ部材（頭）５の左右の端部下部にそれぞれ接続されるアーチ部材（肩）６，７と、から構成されている。脚部２は、アーチ部材（肩）３，４の左右の端部下部にそれぞれ接続される同一形状の一対の脚部材８，９から構成されている。アーチ部材（頭）５、アーチ部材（肩）６，７及び脚部材８，９の５つの部材は、連結手段１０により連結されて組み付けられている。   In the present embodiment, the arch culvert A is composed of a reinforced concrete arch portion 1, a leg portion 2, a bottom slab portion 3, and a filling concrete 4. The arch portion 1 includes an arch member (head) 5 and arch members (shoulders) 6 and 7 connected to lower portions of left and right ends of the arch member (head) 5. The leg 2 is composed of a pair of leg members 8 and 9 having the same shape and connected to lower portions of the left and right ends of the arch members (shoulders) 3 and 4. The five members of the arch member (head) 5, the arch members (shoulders) 6, 7 and the leg members 8, 9 are connected and assembled by the connecting means 10.

アーチ部１は、中心角αで略６０°の角度で分割されることにより、アーチ部材（頭）５とアーチ部材（肩）６，７とにより構成されている。それにより、アーチ部材（頭）５とアーチ部材（肩）６，７は、同一厚み及び同一幅を有する円弧状の部材である。脚部材８，９は、一方の端部（上端部）がアーチ部材（肩）６，７の端部と同一の厚み及び同一の幅を有すると共に、他方の端部（下端部）がそれよりも大きな厚みと同一の幅を有し、一方の端部から他方の端部に向かうほど厚みが大きくなるテーパーが設けられた部材である。また、脚部材８，９は、厚みが大きくなっている下端部側の一方の側面の２箇所から突出して幅方向に複数本設けられた鉄筋１１を備えている。   The arch portion 1 is constituted by an arch member (head) 5 and arch members (shoulders) 6 and 7 by being divided at an angle of about 60 ° with a central angle α. Thereby, the arch member (head) 5 and the arch members (shoulders) 6 and 7 are arc-shaped members having the same thickness and the same width. The leg members 8 and 9 have one end (upper end) having the same thickness and width as the ends of the arch members (shoulders) 6 and 7, and the other end (lower end) thereof. Is a member having a taper that has the same width as the large thickness and increases in thickness from one end to the other end. Moreover, the leg members 8 and 9 are provided with the reinforcing bar 11 which protruded from two places of the one side surface by the side of the lower end part where thickness is large, and was provided with two or more by the width direction.

連結手段１０は、アーチ部材（頭）５とアーチ部材（肩）６，７の内部周方向かつ幅方向Ｑへ設けられると共に脚部材８，９の内部長手方向かつ幅方向へ設けられた複数本のシース管１２と、該シース管１２内に配挿されて、その端部１３ａ，１３ｂが脚部材８，９に定着手段１４により定着される複数本（図示する本実施形態では５本）のＰＣ撚線１３と、により構成されている。シース管１２は、アーチ部材（頭）５、アーチ部材（肩）６，７及び脚部材８，９の軸心、すなわち厚み方向の真中に配置されている。脚部材８，９内のシース管１２及びＰＣ撚線１３は、脚部材８，９の一方の端部から他方の端部（底面）１８まで直線的に配置されている。   The connecting means 10 is provided in the inner circumferential direction and the width direction Q of the arch member (head) 5 and the arch members (shoulders) 6 and 7 and in the inner longitudinal direction and the width direction of the leg members 8 and 9. A plurality of sheath tubes 12 and a plurality of sheath tubes 12 which are inserted into the sheath tube 12 and whose end portions 13a and 13b are fixed to the leg members 8 and 9 by the fixing means 14 (five in the present embodiment shown) PC twisted wire 13. The sheath tube 12 is disposed in the axial center of the arch member (head) 5, the arch members (shoulders) 6 and 7, and the leg members 8 and 9, that is, in the middle of the thickness direction. The sheath tube 12 and the PC stranded wire 13 in the leg members 8 and 9 are linearly arranged from one end of the leg members 8 and 9 to the other end (bottom surface) 18.

底版部３は、鉄筋コンクリート製の直方体状の部材であり、その両端部における上下２箇所から突出して幅方向に複数本設けられた鉄筋１５を備えている。間詰コンクリート４は、脚部材８，９と底版部３との間に打設されて、脚部材８の鉄筋１１と底版部３の鉄筋１５とを介してこれらを連結する部材である。   The bottom plate portion 3 is a rectangular parallelepiped member made of reinforced concrete, and is provided with a plurality of reinforcing bars 15 projecting from two upper and lower portions at both ends thereof and provided in the width direction. The interstitial concrete 4 is a member that is placed between the leg members 8 and 9 and the bottom plate portion 3 and connects them through the reinforcing bars 11 of the leg members 8 and the reinforcing bars 15 of the bottom plate portion 3.

アーチカルバートＡの内径φは、図１に示す本実施形態では、例えば１０ｍ以上もの大型であり、アーチ部材（頭）５、アーチ部材（肩）６，７、脚部材８，９の５部材は、１ピース当り、長さ例えば１．５〜４ｍに成形されることにより小型化し、移動、運搬を容易化している。   In this embodiment shown in FIG. 1, the inner diameter φ of the arch culvert A is, for example, as large as 10 m or more, and the five members of the arch member (head) 5, the arch members (shoulders) 6 and 7, and the leg members 8 and 9 are Each piece is reduced in size by being molded to a length of, for example, 1.5 to 4 m, thereby facilitating movement and transportation.

定着手段１４は、例えばＰＣ撚線１５の両端部１５ａ，１５ｂを脚部材８，９に緊張し、定着するためのものであり、アーチカルバートＡを組付けるのに、図４に示すように、先細りのテーパー孔１６ａを内面に有する締付外管１６と、前記テーパー孔１６ａ内に軸方向に摺動可能に挿入され、外周にはテーパー周面１７ａを有し、中央には撚線挿入孔１７ｂを有した断面略円錐台形状をなす被締付内管１７と、により二重管構造に形成されている。定着手段１０と脚部材８，９との間にはアンカープレートＰが介装される。   The fixing means 14 is for, for example, tensioning and fixing both end portions 15a and 15b of the PC twisted wire 15 to the leg members 8 and 9, and for assembling the arch culvert A, as shown in FIG. A tightening outer tube 16 having a tapered taper hole 16a on the inner surface, a slidably inserted axially into the taper hole 16a, a tapered peripheral surface 17a on the outer periphery, and a stranded wire insertion hole in the center A to-be-tightened inner pipe 17 having a substantially truncated cone shape having a cross section 17b is formed into a double pipe structure. An anchor plate P is interposed between the fixing means 10 and the leg members 8 and 9.

アーチ部材（頭）５、アーチ部材（肩）６，７、脚部材８，９内に設けられたシース管１２内にＰＣ撚線１３を挿入して緊張し、定着後には、グラウト材２１が注入されて固化される。このグラウト材２１は、脚部材８，９の側面に設けられた各充填孔１９から各シース管６内に充填されることにより、ＰＣ撚線８を固定するとともに、ＰＣ撚線８が錆びるのを防止するためのものである。   The PC stranded wire 13 is inserted into the sheath tube 12 provided in the arch member (head) 5, the arch members (shoulders) 6 and 7, and the leg members 8 and 9, and the grout material 21 is fixed after fixing. It is injected and solidified. The grout material 21 is filled in the sheath tubes 6 from the filling holes 19 provided on the side surfaces of the leg members 8 and 9, thereby fixing the PC stranded wire 8 and rusting the PC stranded wire 8. It is for preventing.

本発明の一実施形態に係るアーチカルバートＡは以上の構成からなり、鉄筋コンクリートにより、中心角αで略６０°の角度で分割されたアーチ部材（頭）５及びアーチ部材（頭）５の両端下部に接続されるアーチ部材（肩）６，７によりアーチ部１が構成され、そして、アーチ部材（肩）６，７の端部下部に接続される脚部２としての一対の脚部材８，９よりなる５部材に細分化されて分割されるため、大型のアーチカルバートに適い、アーチカルバートを構成する１つの部材毎の部材長さが１．５〜４．０ｍになり、重量が小さく、施工現場への運搬が容易に行える。   The arch culvert A according to one embodiment of the present invention has the above-described configuration, and the arch member (head) 5 and the lower ends of both ends of the arch member (head) 5 divided by reinforced concrete at a central angle α of approximately 60 °. The arch part 1 is constituted by the arch members (shoulders) 6 and 7 connected to each other, and a pair of leg members 8 and 9 as the leg parts 2 connected to lower ends of the arch members (shoulders) 6 and 7. Because it is divided into 5 members and divided, it is suitable for large arch culverts, the length of each member constituting the arch culvert is 1.5 to 4.0 m, and the weight is small. It can be easily transported to the site.

次に、アーチ部材（頭）５、アーチ部材（肩）６，７及び脚部材８，９の製造方法について説明する。アーチ部材（頭）５及びアーチ部材（肩）６，７は、まず型枠を作成し、この型枠内に鉄筋とシース管を配置して型枠を組み立てる。この組立時、シース管は、完成時のアーチ部材（頭）５及びアーチ部材（肩）６，７の各軸心、すなわち厚み方向の真ん中に複数本配置される。次に、組み立てた型枠にコンクリートを打設し、コンクリートが固まったら、脱型して完成する。   Next, a method for manufacturing the arch member (head) 5, the arch members (shoulders) 6, 7 and the leg members 8, 9 will be described. The arch member (head) 5 and the arch members (shoulders) 6 and 7 first form a mold, and a rebar and a sheath tube are arranged in the mold to assemble the mold. At the time of assembly, a plurality of sheath tubes are arranged in the axial centers of the completed arch member (head) 5 and arch members (shoulders) 6 and 7, that is, in the middle in the thickness direction. Next, concrete is placed on the assembled formwork, and when the concrete is solidified, it is removed from the mold and completed.

脚部材８，９は、型枠を作成し、この型枠内に鉄筋とシース管を配置して型枠を組み立てる。この組立時、シース管は、完成時の脚部材８，９の軸心、すなわち厚み方向の真ん中に複数本配置される。また、鉄筋の一部が、脚部材の厚みが大きくなっている端部側の一方の側面の２箇所から幅方向に複数本、型枠から突出するように配置される。次に、組み立てた型枠にコンクリートを打設し、コンクリートが固まったら、脱型して完成する。   The leg members 8 and 9 create a mold and assemble a mold by arranging a reinforcing bar and a sheath tube in the mold. At the time of this assembly, a plurality of sheath tubes are arranged in the axial centers of the leg members 8 and 9 when completed, that is, in the middle in the thickness direction. Further, a part of the reinforcing bars is arranged so as to protrude from the mold frame in the width direction from two places on one side surface on the end side where the thickness of the leg member is large. Next, concrete is placed on the assembled formwork, and when the concrete is solidified, it is removed from the mold and completed.

底版部３は、型枠を作成し、この型枠内に鉄筋を配置して型枠を組み立てる。この組立時、鉄筋の一部が、底版部の両端部の２箇所から幅方向に複数本、型枠から突出するように配置される。次に、組み立てた型枠にコンクリートを打設し、コンクリートが固まったら、脱型して完成する。   The bottom plate part 3 creates a formwork, arranges reinforcing bars in the formwork, and assembles the formwork. At the time of this assembly, a part of the reinforcing bars are arranged so as to protrude from the mold frame in the width direction from two locations at both ends of the bottom plate portion. Next, concrete is placed on the assembled formwork, and when the concrete is solidified, it is removed from the mold and completed.

次に、アーチカルバートの製造方法について説明する。まず、施工現場において、図５に示すように、アーチ部材（頭）５、アーチ部材（肩）６，７及び脚部材８，９を、地面Ｇに伏倒した状態でアーチ部材（頭）５、アーチ部材（肩）６，７及び脚部材８，９の端部同士を合わせ、仮組み付けを行う。   Next, a method for manufacturing arch culvert will be described. First, at the construction site, as shown in FIG. 5, the arch member (head) 5, the arch members (shoulders) 6 and 7, and the leg members 8 and 9 are laid down on the ground G. The ends of the arch members (shoulders) 6 and 7 and the leg members 8 and 9 are put together and temporarily assembled.

次に、仮組み付けされたアーチ部材５，６，７の周方向かつ幅方向Ｑと脚部材８，９の幅方向へ複数本、例えば５本のＰＣ撚線１３をそれぞれ各シース管１２内部に挿通し、脚部材８，９の底面から下方に導出させる。   Next, a plurality of, for example, five PC twisted wires 13 are placed inside each sheath tube 12 in the circumferential direction of the temporarily assembled arch members 5, 6, 7 and in the width direction Q and the width direction of the leg members 8, 9. Insertion is made to lead out downward from the bottom surfaces of the leg members 8 and 9.

次に、図４に示すような定着手段１４にＰＣ撚線１３を挿入し、続いて例えばジャッキ２３を用いてＰＣ撚線１３を緊張し、定着手段１４で脚部材８，９の底面１８に定着し、５つの部材を連結させて組み付ける。   Next, the PC stranded wire 13 is inserted into the fixing means 14 as shown in FIG. 4, and then the PC stranded wire 13 is tensioned using, for example, a jack 23, and the fixing means 14 is applied to the bottom surfaces 18 of the leg members 8 and 9. Fix and assemble by connecting five members.

この際、脚部材８と脚部材９との間に、脚部材８，９間の間隔を適宜に保つためのサポート材２２が挟み込まれる。また、定着手段１４では、図４に示す締付外管１６の内周に有する先細りのテーパー孔１６ａ内に軸方向に摺動可能になるテーパー周面１７ａを外周に設けた断面円錐台形状の被締付内管１７の中央に設けられた撚線挿入孔１７ｂ内にＰＣ撚線１３を挿入し、ＰＣ撚線１７の緊張後、図には示さないハンマーにて被締付内管１７を下方より上方へ叩たき込むことにより、締付外管１６による反力を被締付内管１７が受けて縮径し、締付力が発揮され、ＰＣ撚線１３が固定される。このように、本実施形態の図３で示す定着手段１４は、簡単な取扱い操作により、各部材の緊張と固定とが迅速かつ確実に行える。   At this time, a support member 22 is appropriately sandwiched between the leg member 8 and the leg member 9 in order to keep an appropriate distance between the leg members 8 and 9. Further, the fixing means 14 has a frustoconical cross-sectional shape in which a tapered peripheral surface 17a that is slidable in the axial direction is provided in an outer periphery of a tapered taper hole 16a provided on the inner periphery of the tightening outer tube 16 shown in FIG. The PC stranded wire 13 is inserted into a stranded wire insertion hole 17b provided at the center of the tightened inner tube 17, and after the PC stranded wire 17 is tensioned, the tightened inner tube 17 is attached with a hammer (not shown). By tapping in from below, the reaction force from the tightening outer tube 16 is received by the tightened inner tube 17 to reduce the diameter, and the tightening force is exerted, and the PC stranded wire 13 is fixed. In this way, the fixing means 14 shown in FIG. 3 of the present embodiment can quickly and reliably tension and fix each member by a simple handling operation.

しかも、前述のように、地面Ｇに各部材を伏倒した状態でＰＣ撚線１３を内部に挿通することにより緊張し固定するのは、各部材に設けられたシース管１２内へのＰＣ撚線１３の挿通作業と、シース管１２内へＰＣ撚線１３を挿通した後の緊張と固定とを迅速かつ確実に、しかも安全に行うためである。なお、アーチ部材（頭）５、アーチ部材（肩）６，７及び脚部材８，９がＰＣ撚線１３で連結、固定された際、ＰＣ撚線１３は、アーチ部材（頭）５、アーチ部材（肩）６，７及び脚部材８，９の各軸心、すなわち厚み方向の真中に配置されたシース管１２に挿通されているので、当然ながら、アーチ部材（頭）５、アーチ部材（肩）６，７及び脚部材８，９の各軸心に配置されていることになる。したがって、各部材にプレストレスを導入しても偏心モーメントが生じないことになる。   In addition, as described above, the PC twisted wire 13 is inserted into the sheath G 12 in the state where each member is laid down on the ground G. This is because the insertion operation of the wire 13 and the tension and fixation after inserting the PC twisted wire 13 into the sheath tube 12 are performed quickly, reliably and safely. When the arch member (head) 5, the arch members (shoulders) 6, 7 and the leg members 8, 9 are connected and fixed by the PC twisted wire 13, the PC twisted wire 13 is connected to the arch member (head) 5, the arch The shafts of the members (shoulders) 6 and 7 and the leg members 8 and 9 are inserted through the sheath tube 12 arranged in the middle in the thickness direction, so of course, the arch member (head) 5 and the arch member ( Shoulders) 6 and 7 and leg members 8 and 9 are arranged at the respective axial centers. Therefore, even if prestress is introduced into each member, no eccentric moment is generated.

次いで、図６に示すように、組み付けた５部材が地面ＧからクレーンＣのワイヤーロープＣ１にて吊上げられる。   Next, as shown in FIG. 6, the assembled five members are lifted from the ground G by the wire rope C <b> 1 of the crane C.

次いで、図７に示すように、クレーンＣで吊り上げられた、組み付けた５部材が、地面に載置された底版部３の両端の所に、それぞれ脚部材８，９が位置するように移送される。   Next, as shown in FIG. 7, the assembled five members lifted by the crane C are transferred so that the leg members 8 and 9 are positioned at both ends of the bottom plate portion 3 placed on the ground, respectively. The

次いで、グラウト充填工程として、図８に示すように、脚部材８，９に設けられている流入口１９からグラウト材を注入し、流出口２０からの噴出を視認することにより、グラウト材が各部材内に設けられたシース管１２に充填完了されたことを確認する。その後、間詰め工程として、脚部材８，９と底版部３との間に間詰コンクリート４を打設して、脚部材８，９と底版部３とを連結する。最後に、サポート部材２２を取り外す。こうして、本実施形態のアーチカルバートＡは、組立て施工が完了される。   Next, as a grout filling step, as shown in FIG. 8, the grout material is injected from the inflow port 19 provided in the leg members 8 and 9 and the ejection from the outflow port 20 is visually confirmed. It is confirmed that the sheath tube 12 provided in the member is completely filled. Thereafter, as a filling step, the filling concrete 4 is placed between the leg members 8 and 9 and the bottom plate portion 3 to connect the leg members 8 and 9 and the bottom plate portion 3. Finally, the support member 22 is removed. Thus, the arch culvert A of the present embodiment is assembled.

なお、組立て施工が完了したアーチカルバートＡにおけるシース管１２は、アーチ部材（頭）５、アーチ部材（肩）６，７及び脚部材８，９の各軸心，すなわち幅方向の真ん中に配置されている。したがって、シース管１２中に挿通され、緊張、固定されたＰＣ撚線１３も、当然、アーチ部材（頭）５、アーチ部材（肩）６，７及び脚部材８，９の各軸心に配置されていることになる。   In addition, the sheath tube 12 in the arch culvert A that has been assembled and installed is arranged at the axial center of the arch member (head) 5, the arch members (shoulders) 6 and 7, and the leg members 8 and 9, that is, in the middle in the width direction. ing. Accordingly, the PC twisted wire 13 inserted into the sheath tube 12 and being tensioned and fixed is naturally also arranged at the axial center of the arch member (head) 5, the arch members (shoulders) 6, 7 and the leg members 8, 9. Will be.

なお、本実施形態において、底版は、前述のようにプレキャストコンクリート製の底版部３と現場打ちコンクリート製の間詰コンクリート４とによって構成されるものに限らず、図９（Ａ）に示すように、底版２４全体が現場打ちコンクリートによって構成されてもよいし、図９（Ｂ）に示すように、底版２５全体がプレキャストコンクリートによって構成されてもよい。図９（Ａ）に示す底版２４は、鉄筋１１を介して脚部材８，９と一体化されている。また、図９（Ｂ）に示す底版２５では、その内部に長さ方向に沿ってシース管２６が配設されており、これに対応して脚部材８，９を厚さ方向に貫通するシース管２７が配設されている。そして、これらのシース管２６，２７に図示しないＰＣ撚線が挿通され、その両端部が定着手段２８によって脚部材８，９に定着されることで、脚部材８，９と底版２５とが一体化されている。   In this embodiment, the bottom plate is not limited to the bottom plate portion 3 made of precast concrete and the padded concrete 4 made of cast-in-place concrete as described above, but as shown in FIG. 9A. The entire bottom plate 24 may be made of cast-in-place concrete, or the entire bottom plate 25 may be made of precast concrete as shown in FIG. 9B. The bottom plate 24 shown in FIG. 9A is integrated with the leg members 8 and 9 through the reinforcing bars 11. Further, in the bottom plate 25 shown in FIG. 9B, a sheath tube 26 is disposed in the inside along the length direction, and a sheath that penetrates the leg members 8 and 9 in the thickness direction corresponding to this is provided. A tube 27 is provided. Then, a PC twisted wire (not shown) is inserted through the sheath tubes 26 and 27, and both ends thereof are fixed to the leg members 8 and 9 by the fixing means 28, whereby the leg members 8 and 9 and the bottom plate 25 are integrated. It has become.

このように、本実施形態のアーチカルバートＡは、図１に示すように、円弧状に形成された複数のアーチ部材５，６，７を接続して形成されるアーチ部１と、アーチ部材６，７の端部にそれぞれ接続される一対の脚部材８，９からなる脚部２と、を連結手段１０で連結して組み付けられたアーチカルバートＡであって、連結手段１０が、アーチ部材５，６，７及び脚部材８，９の内部にそれぞれ設けられた複数本の案内管１２と、該案内管１２内に配挿されて、その端部が脚部材に定着手段１４により定着される複数本のＰＣ撚線１３と、により構成され、ＰＣ撚線１３は、一対の脚部材８，９の底面から下方に導出され、該底面において定着手段１４により定着されているので、ＰＣ撚線を直線的に配置することができ、偏心モーメントが生じないので、脚部材８，９の断面を小さくできスリム化することができる。また、大型のボックスカルバートを形成するのに適しており、アーチカルバートＡを構成する各部材ごとの重量が小さいため施工現場への運搬を容易に行うことができる。   Thus, as shown in FIG. 1, the arch culvert A of this embodiment includes an arch portion 1 formed by connecting a plurality of arch members 5, 6, and 7 formed in an arc shape, and an arch member 6 The arch culvert A is assembled by linking the leg 2 composed of a pair of leg members 8 and 9 connected to the ends of the arch 7 by the coupling means 10. , 6, 7 and a plurality of guide tubes 12 provided inside the leg members 8, 9, respectively, and are inserted into the guide tubes 12, and their ends are fixed to the leg members by the fixing means 14. The PC stranded wire 13 is led downward from the bottom surface of the pair of leg members 8 and 9 and is fixed by the fixing means 14 on the bottom surface. Can be arranged linearly and the eccentric moment is Since there Flip can be slimmed possible to reduce the cross-section of the leg members 8 and 9. Moreover, since it is suitable for forming a large box culvert and the weight of each member constituting the arch culvert A is small, it can be easily transported to the construction site.

また、このアーチカルバートＡは、水路または道路を多量の盛土の下に構築するのに、特に大型に成形するのに最適であり、製作をする際には工場において成形が容易に行え、また、コンクリートを打設するための型枠代は廉価であり、しかも、施工は施工現場に運搬後、組付けが迅速かつ確実に行え、施工性が良好に行える。   In addition, this arch culvert A is ideal for forming a waterway or road under a large amount of embankment, especially for large-scale molding, and can be easily molded at the factory when manufacturing, The formwork cost for placing concrete is inexpensive, and the construction can be performed quickly and reliably after transportation to the construction site, and the workability can be improved.

また、ＰＣ撚線１３の定着を脚部材８，９の底面１８に設け、ＰＣ撚線１３を各部材の軸心に配置したので、プレストレス導入の際にも偏心が生じない。また、脚部材８，９からアンカー鉄筋１１を露出させているので、現場打ちコンクリートで構成される底版部３との連結を鉄筋継手で行うことができる。さらに、脚部材８，９のスリム化を図ったので、組み付け施工時の重量がさらに軽減される。   Further, since the PC stranded wire 13 is fixed on the bottom surface 18 of the leg members 8 and 9 and the PC stranded wire 13 is arranged at the axis of each member, no eccentricity occurs even when prestress is introduced. Moreover, since the anchor reinforcement 11 is exposed from the leg members 8 and 9, it can connect with the bottom slab part 3 comprised with a cast-in-place concrete with a reinforcement joint. Furthermore, since the leg members 8 and 9 are slimmed, the weight during assembly work is further reduced.

本発明のアーチカルバートは、大型のアーチカルバートに適い、アーチカルバートを構成する１つの部材毎の重量が小さく、施工現場への運搬、および施工現場での組付け等、施工性が良好で作業が能率的に行え、また、アーチカルバートを構成するアーチ部材（頭）、一対のアーチ部材（肩）及び一対の脚部材よりなる５部材の連結部分における強度が構造的に堅牢な用途・機能に適する。   The arch culvert of the present invention is suitable for large-sized arch culverts, has a small weight for each member constituting the arch culvert, has good workability such as transportation to the construction site, and assembly at the construction site. Suitable for applications and functions in which the strength of the arch member (head), a pair of arch members (shoulders), and a pair of leg members constituting the arch culvert is structurally robust. .

１ アーチ部
２ 脚部
３ 底版部
４ 間詰コンクリート
５ アーチ部材（頭）
６，７ アーチ部材（肩）
８，９ 脚部材
１０ 連結手段
１１，１５ 鉄筋
１２ シース管（案内管）
１３ ＰＣ撚線
１４ 定着手段
Ａ アーチカルバート 1 Arch part 2 Leg part 3 Bottom plate part 4 Filled concrete 5 Arch member (head)
6,7 Arch member (shoulder)
8, 9 Leg member 10 Connecting means 11, 15 Reinforcing bar 12 Sheath tube (guide tube)
13 PC twisted wire 14 Fixing means A Arch culvert

Claims (4)

円弧状に形成された複数のアーチ部材を接続して形成されるアーチ部と、前記アーチ部材の端部にそれぞれ接続される一対の脚部材からなる脚部と、を連結手段で連結して組み付けられたアーチカルバートであって、
前記連結手段が、前記アーチ部材及び前記脚部材の内部にそれぞれ設けられた複数本の案内管と、該案内管内に配挿されて、その端部が前記脚部材に定着手段により定着される複数本のＰＣ撚線と、により構成され、
前記ＰＣ撚線は、前記一対の脚部材の底面から下方に導出され、該底面において前記定着手段により定着されている
ことを特徴とするアーチカルバート。 An arch portion formed by connecting a plurality of arch members formed in an arc shape and a leg portion formed of a pair of leg members respectively connected to the end portions of the arch member are connected by connecting means and assembled. Arch culvert,
The connecting means is a plurality of guide pipes provided inside the arch member and the leg member, and a plurality of guide pipes are inserted into the guide pipe and the end portions thereof are fixed to the leg member by the fixing means. A PC twisted wire,
The PC twisted wire is led downward from the bottom surfaces of the pair of leg members, and is fixed on the bottom surfaces by the fixing means. 前記ＰＣ撚線は、前記アーチ部材及び前記脚部材の各軸心に配置されていることを特徴とする請求項１記載のアーチカルバート。   2. The arch culvert according to claim 1, wherein the PC stranded wire is disposed at each axis of the arch member and the leg member. 前記脚部材は、上端部が前記アーチ部材の端部と同一の厚み及び同一の幅を有すると共に、下端部が前記上端部よりも大きな厚みと同一の幅を有し、前記上端部から前記下端部に向かうほど厚みが大きくなるテーパーが設けられていることを特徴とする請求項１または２記載のアーチカルバート。   The leg member has an upper end portion having the same thickness and width as the end portion of the arch member, and a lower end portion having the same width as the thickness larger than the upper end portion. The arch culvert according to claim 1, wherein a taper having a thickness that increases toward the portion is provided. 請求項１から３のいずれか１項に記載のアーチカルバートの製造方法であって、
前記アーチ部材及び前記脚部材を地面に伏倒した状態で仮組み付けを行う工程と、
前記仮組み付けされた前記アーチ部材及び前記脚部材における前記案内管にＰＣ撚線を挿通する工程と、
前記ＰＣ撚線を前記脚部材の底面に定着して前記アーチ部材及び前記脚部材を組み付ける工程と、
組み付けられた前記アーチ部材及び前記脚部材を吊り上げて所定位置に設置する工程と、
を含むことを特徴とするアーチカルバートの製造方法。 A method for producing an arch culvert according to any one of claims 1 to 3,
A step of temporarily assembling the arch member and the leg member in a state of lying down on the ground;
Inserting a PC twisted wire through the guide tube in the temporarily assembled arch member and leg member;
Fixing the PC twisted wire to the bottom surface of the leg member and assembling the arch member and the leg member;
Lifting the assembled arch member and the leg member and installing them at a predetermined position;
The manufacturing method of the arch culvert characterized by including these.
JP2013177901A 2013-08-29 2013-08-29 Arch culvert and manufacturing method thereof Pending JP2015045202A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6340117B1 (en) * 2017-05-19 2018-06-06 大成ロテック株式会社 Road laying
CN108774959A (en) * 2018-06-29 2018-11-09 深圳市路桥建设集团有限公司 A kind of assembled arch culvert structure of rapid shaping
JP7441812B2 (en) 2021-04-01 2024-03-01 大成建設株式会社 Temporary assembly structure, connection means and invert construction method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6360392A (en) * 1986-08-28 1988-03-16 日本コンクリ−ト工業株式会社 Method of constructing pressure conduit tunnel made of precast
JPS63108481U (en) * 1986-12-27 1988-07-13
US4836714A (en) * 1981-11-17 1989-06-06 Marcel Matiere Enclosed structures of very large cross-section, such as conduits, silos or shelters
JPH0978584A (en) * 1995-09-08 1997-03-25 Okumura Corp Construction method for banking with tunnel-like space
JP2000337093A (en) * 1999-05-26 2000-12-05 Nihon Samicon Kk Arched hollow structure
JP2002088789A (en) * 2000-09-19 2002-03-27 Ishikawajima Constr Materials Co Ltd Arch tunnel
JP2004019285A (en) * 2002-06-18 2004-01-22 Geostr Corp Divided type arcuate culvert
JP2013133593A (en) * 2011-12-26 2013-07-08 Yamax Corp Arch culvert and assembly construction method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4836714A (en) * 1981-11-17 1989-06-06 Marcel Matiere Enclosed structures of very large cross-section, such as conduits, silos or shelters
JPS6360392A (en) * 1986-08-28 1988-03-16 日本コンクリ−ト工業株式会社 Method of constructing pressure conduit tunnel made of precast
JPS63108481U (en) * 1986-12-27 1988-07-13
JPH0978584A (en) * 1995-09-08 1997-03-25 Okumura Corp Construction method for banking with tunnel-like space
JP2000337093A (en) * 1999-05-26 2000-12-05 Nihon Samicon Kk Arched hollow structure
JP2002088789A (en) * 2000-09-19 2002-03-27 Ishikawajima Constr Materials Co Ltd Arch tunnel
JP2004019285A (en) * 2002-06-18 2004-01-22 Geostr Corp Divided type arcuate culvert
JP2013133593A (en) * 2011-12-26 2013-07-08 Yamax Corp Arch culvert and assembly construction method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6340117B1 (en) * 2017-05-19 2018-06-06 大成ロテック株式会社 Road laying
JP2018193812A (en) * 2017-05-19 2018-12-06 大成ロテック株式会社 Road laid object
CN108774959A (en) * 2018-06-29 2018-11-09 深圳市路桥建设集团有限公司 A kind of assembled arch culvert structure of rapid shaping
JP7441812B2 (en) 2021-04-01 2024-03-01 大成建設株式会社 Temporary assembly structure, connection means and invert construction method

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