JP7423313B2 - How to join precast concrete members - Google Patents

How to join precast concrete members Download PDF

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JP7423313B2
JP7423313B2 JP2020000655A JP2020000655A JP7423313B2 JP 7423313 B2 JP7423313 B2 JP 7423313B2 JP 2020000655 A JP2020000655 A JP 2020000655A JP 2020000655 A JP2020000655 A JP 2020000655A JP 7423313 B2 JP7423313 B2 JP 7423313B2
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reinforcing
joint
reinforcing bar
precast concrete
joining
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JP2021110107A (en
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大季 小倉
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Shimizu Corp
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Description

本発明は、プレキャストコンクリート部材の接合方法に関する。 The present invention relates to a method for joining precast concrete members.

建設現場における生産性向上を図るために、柱や梁、床版などをプレキャストコンクリート部材として工場で製作し、現場に運搬して組立て接合している（例えば、特許文献１参照）。このように、プレキャストコンクリート部材を用いることで、工期短縮を図ることができる。 In order to improve productivity at construction sites, columns, beams, floor slabs, and the like are manufactured in factories as precast concrete members, transported to the site, and assembled and joined (see, for example, Patent Document 1). In this way, by using precast concrete members, the construction period can be shortened.

特開２００８－８１２０号公報Japanese Patent Application Publication No. 2008-8120

しかしながら、プレキャストコンクリート部材どうしの接合工程は、接合されるプレキャストコンクリート部材の鉄筋を接合する工程、接合部の配筋を行う工程、接合部の型枠を設置する工程、接合部のコンクリートを打設する工程など多くの工程を行う必要があり、労力および工期がかかるという問題がある。 However, the joining process of precast concrete members includes the process of joining the reinforcing bars of the precast concrete members to be joined, the process of arranging reinforcement at the joint, the process of installing formwork for the joint, and the process of pouring concrete for the joint. There is a problem in that it is necessary to carry out many steps such as the process of processing, which takes labor and construction time.

そこで、本発明は、上述する問題点に鑑みてなされたもので、労力を軽減できるとともに工期を短縮できるプレキャストコンクリート部材の接合方法を提供することを目的とする。 Therefore, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a method for joining precast concrete members that can reduce labor and shorten the construction period.

上記目的を達成するため、本発明に係るプレキャストコンクリート部材の接合方法は、複数のプレキャストコンクリート部材をそれぞれ設置位置に据え付け、前記複数のプレキャストコンクリート部材を接合する接合部が形成される接合部形成領域に、前記複数のプレキャストコンクリート部材それぞれの鉄筋を配置するプレキャストコンクリート部材据え付け工程と、前記接合部を形成して前記複数のプレキャストコンクリート部材を接合するプレキャストコンクリート部材接合工程と、を有し、前記プレキャストコンクリート部材接合工程では、前記接合部形成領域に第１付加製造装置の第１ノズルで水硬性混合物を積層造形することを特徴とする。 In order to achieve the above object, the method for joining precast concrete members according to the present invention includes installing a plurality of precast concrete members at respective installation positions, and a joint forming area where a joint for joining the plurality of precast concrete members is formed. and a precast concrete member installation step of arranging reinforcing bars for each of the plurality of precast concrete members, and a precast concrete member joining step of forming the joint and joining the plurality of precast concrete members, The concrete member joining step is characterized in that a hydraulic mixture is layered into the joint forming region using a first nozzle of a first additive manufacturing device.

本発明では、接合部形成領域に水硬性混合物を積層造形することにより、接合部形成領域に積層造形された水硬性混合物に複数のプレキャストコンクリート部材の鉄筋が埋設されて、水硬性混合物が硬化することで複数のプレキャストコンクリート部材が接合される。
水硬性混合物が第１付加製造装置の第１ノズルで積層造形されることにより、自動的に接合部を形成できて生産性が向上するため、労力を軽減できるとともに工期を短縮できる。 In the present invention, by additively manufacturing the hydraulic mixture in the joint forming area, reinforcing bars of a plurality of precast concrete members are embedded in the hydraulic mixture additively manufactured in the joint forming area, and the hydraulic mixture hardens. This joins multiple precast concrete members together.
By additively manufacturing the hydraulic mixture using the first nozzle of the first additive manufacturing device, joints can be automatically formed and productivity can be improved, so that labor can be reduced and the construction period can be shortened.

また、本発明に係るプレキャストコンクリート部材の接合方法では、前記接合部形成領域に、前記接合部を補強するための補強部材を設置する補強部材設置工程を有していてもよい。
このような構成とすることにより、接合部の強度を向上させることができる。 Further, the method for joining precast concrete members according to the present invention may include a reinforcing member installation step of installing a reinforcing member for reinforcing the joint in the joint forming area.
With such a configuration, the strength of the joint can be improved.

また、本発明に係るプレキャストコンクリート部材の接合方法では、補強部材設置工程では、前記接合部形成領域に第２付加製造装置の第２ノズルで補強材料を積層造形して、前記接合部形成領域に前記補強部材を製作してもよい。
このような構成とすることにより、補強部材の製作と設置を自動的に行うことができて生産性が向上するため、労力を軽減できるとともに工期を短縮できる。 Further, in the method for joining precast concrete members according to the present invention, in the reinforcing member installation step, a reinforcing material is layered in the joint forming area using a second nozzle of a second additive manufacturing device, and the reinforcing material is layered in the joining forming area. The reinforcing member may be manufactured.
With such a configuration, the reinforcing member can be manufactured and installed automatically, improving productivity, thereby reducing labor and shortening the construction period.

また、本発明に係るプレキャストコンクリート部材の接合方法では、前記複数のプレキャストコンクリート部材の前記鉄筋を接合する鉄筋接合工程を有していてもよい。
このような構成とすることにより、複数のプレキャストコンクリート部材を確実に接合することができる。 Moreover, the method for joining precast concrete members according to the present invention may include a reinforcing bar joining step of joining the reinforcing bars of the plurality of precast concrete members.
With such a configuration, a plurality of precast concrete members can be reliably joined.

また、本発明に係るプレキャストコンクリート部材の接合方法では、前記鉄筋接合工程では、第３付加製造装置の第３ノズルで鉄筋接合材料を積層造形して前記鉄筋同士を直接接合してもよい。
このような構成とすることにより、鉄筋の接合を自動的に行うことができて生産性が向上するため、労力を軽減できるとともに工期を短縮できる。 Further, in the method for joining precast concrete members according to the present invention, in the reinforcing bar joining step, the reinforcing bars may be directly joined to each other by additively manufacturing a reinforcing bar joining material using a third nozzle of a third additive manufacturing device.
With such a configuration, the reinforcing bars can be automatically joined and productivity is improved, so that labor can be reduced and the construction period can be shortened.

本発明によれば、労力を軽減できるとともに工期を短縮できる。 According to the present invention, labor can be reduced and the construction period can be shortened.

本発明の第１実施形態によるプレキャストコンクリート部材の接合部の一例を示す斜視図である。It is a perspective view showing an example of the joint part of the precast concrete member by a 1st embodiment of the present invention. 本発明の第１実施形態によるプレキャストコンクリート部材の接合方法のプレキャストコンクリート部材接合工程を示す斜視図である。FIG. 2 is a perspective view showing a precast concrete member joining step of the precast concrete member joining method according to the first embodiment of the present invention. 本発明の第２実施形態によるプレキャストコンクリート部材の接合方法のプレキャストコンクリート部材接合工程を示す斜視図である。It is a perspective view which shows the precast concrete member joining process of the joining method of the precast concrete member by 2nd Embodiment of this invention. 本発明の実施形態の変形例によるプレキャストコンクリート部材の接合方法のプレキャストコンクリート部材接合工程を示す斜視図である。It is a perspective view which shows the precast concrete member joining process of the joining method of precast concrete members by the modification of embodiment of this invention.

（第１実施形態）
以下、本発明の第１実施形態によるプレキャストコンクリート部材の接合方法について図１および図２に基づいて説明する。
図１に示すように、第１実施形態によるプレキャストコンクリート部材の接合部１は、それぞれ床版を構築するプレキャストコンクリート製の第１プレキャストコンクリート部材２（以下、第１プレキャスト部材２とする）と、第２プレキャストコンクリート部材３（以下、第２プレキャスト部材３とする）とを接合している。図１では、接合部１、第１プレキャスト部材２および第２プレキャスト部材３を含む床版の一部を示している。
第１プレキャスト部材２および第２プレキャスト部材３は、工場などで製作され、建設現場に搬入されて所定の位置に設置される。接合部１は、建設現場において構築され、第１プレキャスト部材２と第２プレキャスト部材３とを接合している。図１では、接合部１の内部を示すために、接合部１の接合コンクリート部４と第２プレキャスト部材３の第２コンクリート部３１を省略している。 (First embodiment)
EMBODIMENT OF THE INVENTION Hereinafter, the joining method of the precast concrete member by 1st Embodiment of this invention is demonstrated based on FIG. 1 and FIG. 2.
As shown in FIG. 1, a joint 1 of precast concrete members according to the first embodiment includes a first precast concrete member 2 (hereinafter referred to as the first precast member 2) made of precast concrete that constructs a floor slab, and A second precast concrete member 3 (hereinafter referred to as second precast member 3) is joined. In FIG. 1, a part of the floor slab including a joint 1, a first precast member 2, and a second precast member 3 is shown.
The first precast member 2 and the second precast member 3 are manufactured in a factory or the like, transported to a construction site, and installed at a predetermined position. The joint 1 is constructed at a construction site and joins the first precast member 2 and the second precast member 3. In FIG. 1, in order to show the inside of the joint part 1, the joint concrete part 4 of the joint part 1 and the second concrete part 31 of the second precast member 3 are omitted.

第１プレキャスト部材２と第２プレキャスト部材３とは、接合部１を介して水平方向に並んで配置されている。
接合部１を介して第１プレキャスト部材２と第２プレキャスト部材３とが並ぶ水平方向を第１水平方向（図のＸ方向）とし、第１水平方向に直交する水平方向を第２水平方向（図のＹ方向）とする。第１水平方向のうち、第２プレキャスト部材３に対する第１プレキャスト部材２が設けられている側を一方側とし、第１プレキャスト部材２に対する第２プレキャスト部材３が設けられている側を他方側とする。 The first precast member 2 and the second precast member 3 are arranged side by side in the horizontal direction with the joint 1 interposed therebetween.
The horizontal direction in which the first precast member 2 and the second precast member 3 are lined up via the joint 1 is the first horizontal direction (X direction in the figure), and the horizontal direction perpendicular to the first horizontal direction is the second horizontal direction ( (Y direction in the figure). In the first horizontal direction, the side where the first precast member 2 is provided relative to the second precast member 3 is defined as one side, and the side where the second precast member 3 is provided relative to the first precast member 2 is defined as the other side. do.

第１プレキャスト部材２は、鉄筋コンクリート造である。第１プレキャスト部材２のコンクリート部分を第１コンクリート部２１とする。
第１プレキャスト部材２は、複数の第１鉄筋２２を有している。複数の第１鉄筋２２は、第１コンクリート部２１に埋設される部分と、第１コンクリート部２１における第１水平方向の他方側（接合部１側）の端面２１ａ（第１接合端面２１ａとする）から第１水平方向の他方側に突出する第１鉄筋突出部２３と、を有している。
複数の第１鉄筋２２は、第２水平方向に間隔をあけて配置されている。複数の第１鉄筋２２それぞれの第１鉄筋突出部２３も第２水平方向に間隔をあけて配置されている。 The first precast member 2 is made of reinforced concrete. The concrete portion of the first precast member 2 is referred to as a first concrete portion 21.
The first precast member 2 has a plurality of first reinforcing bars 22 . The plurality of first reinforcing bars 22 have a part buried in the first concrete part 21 and an end face 21a (referred to as the first joint end face 21a) on the other side (joint part 1 side) in the first horizontal direction in the first concrete part 21. ) to the other side in the first horizontal direction.
The plurality of first reinforcing bars 22 are arranged at intervals in the second horizontal direction. The first reinforcing bar protrusions 23 of each of the plurality of first reinforcing bars 22 are also arranged at intervals in the second horizontal direction.

第１鉄筋突出部２３は、Ｕ字形状に曲がっている。第１鉄筋突出部２３は、Ｕ字形の円弧状に湾曲する湾曲部分２３１が先端側（第１水平方向の他方側）に位置し、湾曲部分２３１に接続されて平行で直線状に延びる２つの直線部分２３２，２３２が基端側（第１水平方向の一方側）に位置している。第１鉄筋突出部２３は、２つの直線部分２３２，２３２が上下方向に間隔をあけるように配置されている。 The first reinforcing bar protrusion 23 is bent into a U-shape. The first reinforcing bar protrusion 23 has a U-shaped curved portion 231 that curves in an arc shape located on the tip side (on the other side in the first horizontal direction), and two parallel and linearly extending curved portions connected to the curved portion 231. The straight portions 232, 232 are located on the base end side (one side in the first horizontal direction). The first reinforcing bar protrusion 23 is arranged such that two straight portions 232, 232 are spaced apart in the vertical direction.

第２プレキャスト部材３は、鉄筋コンクリート造である。第２プレキャスト部材３のコンクリート部分を第２コンクリート部３１とする。
第２プレキャスト部材３は、複数の第２鉄筋３２を有している。複数の第２鉄筋３２は、第２コンクリート部３１に埋設される部分と、第２コンクリート部３１における第１水平方向の一方側（接合部１側）の端面３１ａ（第２接合端面３１ａとする）から第１水平方向の一方側に突出する第２鉄筋突出部３３と、を有している。
複数の第２鉄筋３２は、第２水平方向に間隔をあけて配置されている。複数の第２鉄筋３２それぞれの第２鉄筋突出部３３も第２水平方向に間隔をあけて配置されている。 The second precast member 3 is made of reinforced concrete. The concrete portion of the second precast member 3 is referred to as a second concrete portion 31.
The second precast member 3 has a plurality of second reinforcing bars 32. The plurality of second reinforcing bars 32 have a part buried in the second concrete part 31 and an end face 31a (referred to as a second joint end face 31a) on one side (joint part 1 side) of the second concrete part 31 in the first horizontal direction. ) and a second reinforcing bar protrusion 33 protruding from the first horizontal direction.
The plurality of second reinforcing bars 32 are arranged at intervals in the second horizontal direction. The second reinforcing bar protrusions 33 of each of the plurality of second reinforcing bars 32 are also arranged at intervals in the second horizontal direction.

第２鉄筋突出部３３は、Ｕ字形状に曲がっている。第２鉄筋突出部３３は、Ｕ字形の円弧状に湾曲する湾曲部分３３１が先端側（第１水平方向の一方側）に位置し、湾曲部分３３１に接続されて平行で直線状に延びる２つの直線部分３３２，３３２が基端側（第１水平方向の他方側）に位置している。第２鉄筋突出部３３は、２つの直線部分３３２，３３２が上下方向に間隔をあけるように配置されている。 The second reinforcing bar protrusion 33 is bent into a U-shape. The second reinforcing bar protrusion 33 has a U-shaped curved portion 331 that curves in an arc shape located on the tip side (one side in the first horizontal direction), and two parallel and linearly extending curved portions 331 connected to the curved portion 331. The straight portions 332, 332 are located on the base end side (the other side in the first horizontal direction). The second reinforcing bar protrusion 33 is arranged such that two straight portions 332, 332 are spaced apart in the vertical direction.

第１プレキャスト部材２と第２プレキャスト部材３とは、第１コンクリート部２１の第１接合端面２１ａと第２コンクリート部３１の第２接合端面３１ａとが第１水平方向に間隔をあけて対面するように配置されている。接合部１は、第１接合端面２１ａと第２接合端面３１ａとの間に設けられている。 The first precast member 2 and the second precast member 3 are such that the first joint end face 21a of the first concrete part 21 and the second joint end face 31a of the second concrete part 31 face each other with an interval in the first horizontal direction. It is arranged like this. The joint portion 1 is provided between the first joint end surface 21a and the second joint end surface 31a.

第１鉄筋突出部２３および第２鉄筋突出部３３は、接合部１の内部に配置されている。本実施形態では、第１鉄筋突出部２３と第２鉄筋突出部３３とは、それぞれ同じ数が設けられている。第１鉄筋突出部２３と第２鉄筋突出部３３とは、第２水平方向に重なる位置に設けられている。第１鉄筋突出部２３の湾曲部分２３１が第２鉄筋突出部３３の湾曲部分３３１よりも第１水平方向の他方側（第２プレキャスト部材３）に位置している。第１鉄筋突出部２３の直線部分２３２，２３２と、第２鉄筋突出部３３の直線部分３３２，３３２とが、第２水平方向に重なって配置されている。 The first reinforcing bar protrusion 23 and the second reinforcing bar protruding part 33 are arranged inside the joint 1 . In this embodiment, the same number of first reinforcing bar protrusions 23 and second reinforcing bar protruding parts 33 are provided. The first reinforcing bar protrusion 23 and the second reinforcing bar protruding part 33 are provided at positions overlapping in the second horizontal direction. The curved portion 231 of the first reinforcing bar protrusion 23 is located on the other side (second precast member 3) in the first horizontal direction than the curved portion 331 of the second reinforcing bar protrusion 33. The linear portions 232, 232 of the first reinforcing bar protrusion 23 and the linear portions 332 , 332 of the second reinforcing bar protruding portion 33 are arranged to overlap in the second horizontal direction.

本実施形態では、接触または近接して設けられた１つの第１鉄筋突出部２３と１つの第２鉄筋突出部３３との鉄筋の組が、第２水平方向に間隔をあけて複数配置されている。第１鉄筋突出部２３および第２鉄筋突出部３３それぞれの直線部分２３２，３３２が接触または近接して設けられている。なお、直線部分２３２，３３２のうちの先端側（湾曲部分２３１，３３１と接続されている側）どうしが接触または近接して設けられている。
第１鉄筋突出部２３の先端側の部分と第２鉄筋突出部３３の先端側の部分とは、第２水平方向から見て第１水平方向に延びる長円を囲むように配置されている。 In this embodiment, a plurality of sets of reinforcing bars, including one first reinforcing bar protrusion 23 and one second reinforcing bar protruding part 33, which are provided in contact with or close to each other, are arranged at intervals in the second horizontal direction. There is. The straight portions 232 and 332 of the first reinforcing bar protrusion 23 and the second reinforcing bar protruding portion 33 are provided in contact with or in close proximity to each other. Note that the distal ends of the straight portions 232 and 332 (the sides connected to the curved portions 231 and 331) are provided in contact with or in close proximity to each other.
The tip side portion of the first reinforcing bar protrusion 23 and the tip side portion of the second reinforcing bar protrusion 33 are arranged so as to surround an ellipse extending in the first horizontal direction when viewed from the second horizontal direction.

接合部１は、鉄筋コンクリート造である。接合部１のコンクリート部分を接合コンクリート部４とする。接合部１の接合コンクリート部４には、第１鉄筋突出部２３および第２鉄筋突出部３３が埋設されているとともに、補強鉄筋６（補強部材）が埋設されている。補強鉄筋６は、接合部１を補強するために設けられている。 The joint 1 is made of reinforced concrete. The concrete portion of joint portion 1 is referred to as joint concrete portion 4. A first reinforcing bar protrusion 23 and a second reinforcing bar protruding part 33 are buried in the joined concrete portion 4 of the joint 1, and reinforcing reinforcing bars 6 (reinforcing members) are buried therein. Reinforcement reinforcing bars 6 are provided to reinforce the joint 1.

補強鉄筋６は、直線状の鉄筋で、第２水平方向に延び、接合部１の第２水平方向の両端部分を除いた領域全体にわたるよう配置されている。補強鉄筋６は、第１鉄筋突出部２３の先端側の部分と、第２鉄筋突出部３３の先端側の部分とに囲まれている領域１ａを貫通するように複数設けられている。本実施形態では、補強鉄筋６は、上記の領域１ａの上部側に第１水平方向に間隔をあけて３本、下部側に第１水平方向に間隔をあけて３本の計６本が設けられている。
これらの複数の補強鉄筋６は、第１鉄筋突出部２３および第２鉄筋突出部３３の少なくとも１つと結束されている。 The reinforcing reinforcing bars 6 are linear reinforcing bars that extend in the second horizontal direction and are arranged to cover the entire area of the joint 1 except for both end portions in the second horizontal direction. A plurality of reinforcing bars 6 are provided so as to penetrate the region 1a surrounded by the distal end portion of the first reinforcing bar protrusion 23 and the distal end portion of the second reinforcing bar protrusion 33. In this embodiment, a total of six reinforcing bars 6 are provided, three at intervals in the first horizontal direction on the upper side of the region 1a and three at intervals in the first horizontal direction at the lower side. It is being
These reinforcing bars 6 are tied to at least one of the first reinforcing bar protrusion 23 and the second reinforcing bar protruding part 33.

次に、第１実施形態の第１プレキャスト部材２と第２プレキャスト部材３との接合方法（プレキャストコンクリート部材の接合方法）を説明する。
第１プレキャスト部材２と第２プレキャスト部材３とをそれぞれが設置される設置位置に据え付けるプレキャストコンクリート部材据え付け工程を行う。
プレキャストコンクリート部材据え付け工程では、接合部１が形成される接合部形成領域１１に第１鉄筋突出部２３および第２鉄筋突出部３３が配置されるように第１プレキャスト部材２および第２プレキャスト部材３を据え付ける。 Next, a method for joining the first precast member 2 and the second precast member 3 (a method for joining precast concrete members) of the first embodiment will be described.
A precast concrete member installation step is performed in which the first precast member 2 and the second precast member 3 are installed at their respective installation positions.
In the precast concrete member installation process, the first precast member 2 and the second precast member 3 are installed so that the first reinforcing bar protrusion 23 and the second reinforcing bar protrusion 33 are arranged in the joint forming area 11 where the joint 1 is formed. Install.

接合部１を形成して第１プレキャスト部材２と第２プレキャスト部材３とを接合するプレキャストコンクリート部材接合工程を行う。
プレキャストコンクリート部材接合工程では、まず、接合部１の配筋を行い（接合部配筋工程）、接合部１の型枠１３（図２参照）を設置し（型枠設置工程）、型枠１３に接合コンクリート部４となる水硬性混合物１２を積層造形する（水硬性混合物積層造形工程）。
接合部配筋工程では、接合部形成領域１１に補強鉄筋６を配筋する補強鉄筋配筋工程（補強部材設置工程）を行う。補強鉄筋６を第１鉄筋突出部２３および第２鉄筋突出部３３の少なくとも１つと結束する。 A precast concrete member joining step is performed in which a joint portion 1 is formed and the first precast member 2 and the second precast member 3 are joined.
In the precast concrete member joining process, first, reinforcement is arranged for the joint 1 (joint reinforcement arrangement process), formwork 13 (see Figure 2) for the joint 1 is installed (formwork installation process), and the formwork 13 is installed (formwork installation process). Then, the hydraulic mixture 12 that will become the joint concrete part 4 is additively manufactured (hydraulic mixture additive manufacturing process).
In the joint reinforcement arrangement step, a reinforcing reinforcing bar arrangement step (reinforcement member installation step) of arranging reinforcing reinforcing bars 6 in the joint formation region 11 is performed. The reinforcing reinforcing bar 6 is tied to at least one of the first reinforcing bar protrusion 23 and the second reinforcing bar protruding part 33.

本実施形態の補強鉄筋配筋工程（補強部材設置工程）では、接合部形成領域１１に既に製作された補強鉄筋６を設置する。なお、補強鉄筋配筋工程（補強部材設置工程）では、第２付加製造装置（不図示）で積層造形することで補強鉄筋６を製作してもよい。例えば、接合部形成領域１１に第２付加製造装置の第２ノズル（不図示）から補強材料を噴射して積層造形して補強鉄筋６を製作してもよい。補強鉄筋６を製作するための補強材料は、例えば、金属などである。
型枠設置工程では、接合部形成領域１１に沿って接合部１の型枠１３を設置する。 In the reinforcing reinforcing bar arrangement process (reinforcing member installation process) of this embodiment, the reinforcing reinforcing bars 6 that have already been manufactured are installed in the joint forming area 11. In addition, in the reinforcing reinforcing bar arrangement step (reinforcing member installation step), the reinforcing reinforcing bars 6 may be manufactured by additive manufacturing using a second additive manufacturing device (not shown). For example, the reinforcing reinforcing bars 6 may be manufactured by injecting a reinforcing material into the joint forming region 11 from a second nozzle (not shown) of a second additive manufacturing device and performing additive manufacturing. The reinforcing material for manufacturing the reinforcing reinforcing bars 6 is, for example, metal.
In the formwork installation step, the formwork 13 of the joint portion 1 is installed along the joint formation region 11.

図２に示すように、水硬性混合物積層造形工程では、第１付加製造装置７１（例えば、３Ｄプリンター）の第１ノズル７１１で型枠１３内に水硬性混合物１２を噴射して積層造形する。
水硬性混合物１２は、例えばコンクリート流動物などで、種々のセメント系材料（例えば、セメントペースト、モルタル、コンクリート等）、ジオポリマー組成物等を含んでいる。 As shown in FIG. 2, in the hydraulic mixture layered manufacturing step, the hydraulic mixture 12 is injected into the mold 13 using a first nozzle 711 of a first additive manufacturing device 71 (for example, a 3D printer) to perform layered manufacturing.
The hydraulic mixture 12 is, for example, a concrete fluid, and contains various cement materials (for example, cement paste, mortar, concrete, etc.), geopolymer compositions, and the like.

第１ノズル７１１は、例えば遠隔操作による移動や自動走行が可能なロボットアームやガントリークレーンなど（不図示）に装着されている。図２では、第１付加製造装置７１の第１ノズル７１１のみが示されている。
なお、第１付加製造装置７１の構成は、特に限定されない。また、第１付加製造装置７１およびロボットアーム（またはガントリークレーンなど）の少なくとも一方が遠隔操作による移動や自動走行が可能であってもよく、第１付加製造装置７１およびロボットアーム（またはガントリークレーンなど）の双方が遠隔操作による移動や自動走行が可能であってもよい。 The first nozzle 711 is attached to, for example, a robot arm or a gantry crane (not shown) that can be moved by remote control or automatically run. In FIG. 2, only the first nozzle 711 of the first additive manufacturing device 71 is shown.
Note that the configuration of the first additive manufacturing device 71 is not particularly limited. Further, at least one of the first additive manufacturing device 71 and the robot arm (or gantry crane, etc.) may be capable of moving by remote control or automatically traveling. ) may be capable of remote movement or automatic driving.

型枠１３内に積層造形された水硬性混合物１２を硬化させ、水硬性混合物１２を第１鉄筋突出部２３、第２鉄筋突出部３３および補強鉄筋６と定着させる。
水硬性混合物１２が硬化したら型枠１３を外す。
このようにして接合部１が構築され、第１プレキャスト部材２と第２プレキャスト部材３とが接合される。 The hydraulic mixture 12 layered in the formwork 13 is cured, and the hydraulic mixture 12 is fixed to the first reinforcing bar protrusion 23, the second reinforcing bar protrusion 33, and the reinforcing reinforcing bar 6.
Once the hydraulic mixture 12 has hardened, the formwork 13 is removed.
In this way, the joint 1 is constructed, and the first precast member 2 and the second precast member 3 are joined.

次に、上記の第１実施形態によるプレキャストコンクリート部材の接合方法の作用・効果について説明する。
第１実施形態によるプレキャストコンクリート部材の接合方法では、接合部形成領域１１に水硬性混合物１２を積層造形することにより、接合部形成領域１１に積層造形された水硬性混合物１２に第１プレキャスト部材２の第１鉄筋突出部２３および第２プレキャスト部材３の第２鉄筋突出部３３が埋設されて、水硬性混合物１２が硬化することで第１プレキャスト部材２と第２プレキャスト部材３とが接合される。
水硬性混合物１２が第１付加製造装置７１の第１ノズル７１１で積層造形されることにより、自動的に接合部１を形成できて生産性が向上するため、労力を軽減できるとともに工期を短縮できる。 Next, the functions and effects of the method for joining precast concrete members according to the first embodiment described above will be explained.
In the method for joining precast concrete members according to the first embodiment, by additively manufacturing the hydraulic mixture 12 in the joint forming area 11, the first precast member 2 The first reinforcing bar protrusion 23 and the second reinforcing bar protruding part 33 of the second precast member 3 are buried, and the hydraulic mixture 12 hardens to join the first precast member 2 and the second precast member 3. .
By additively manufacturing the hydraulic mixture 12 with the first nozzle 711 of the first additive manufacturing device 71, the joint 1 can be automatically formed and productivity is improved, which reduces labor and shortens the construction period. .

（第２実施形態）
次に、他の実施形態について、添付図面に基づいて説明するが、上述の第１実施形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、実施形態と異なる構成について説明する。
図３に示すように、第２実施形態によるプレキャストコンクリート部材の接合部１Ｂは、図１に示す第１実施形態の接合部１に設けられていた補強鉄筋６が設けられておらず、第１プレキャスト部材２Ｂの第１鉄筋２２Ｂと第２プレキャスト部材３Ｂの第２鉄筋３２Ｂとが鉄筋接合部９によって接合されている。 (Second embodiment)
Next, other embodiments will be described based on the accompanying drawings, and the same or similar members and parts as in the first embodiment will be designated by the same reference numerals and explanations will be omitted. I will explain about it.
As shown in FIG. 3, the joint 1B of precast concrete members according to the second embodiment is not provided with reinforcing reinforcing bars 6 that were provided in the joint 1 of the first embodiment shown in FIG. The first reinforcing bars 22B of the precast member 2B and the second reinforcing bars 32B of the second precast member 3B are joined by a reinforcing bar joint 9.

第２実施形態では、第１プレキャスト部材２Ｂの第１鉄筋２２Ｂは、第１水平方向に直線状に延び、第１水平方向の他方側の部分が第１コンクリート部２１の第１接合端面２１ａから第１水平方向の他方側に突出している。第２実施形態においても、第１鉄筋２２Ｂにおける第１接合端面２１ａから突出する部分を第１鉄筋突出部２３Ｂとする。第２実施形態の第１鉄筋突出部２３Ｂは、直線状に延びている。
第２プレキャスト部材３Ｂの第２鉄筋３２Ｂは、第１水平方向に直線状に延び、第１水平方向の一方側の部分が第２コンクリート部３１の第２接合端面３１ａから第１水平方向の一方側に突出している。第２実施形態においても、第２鉄筋３２Ｂにおける第２接合端面３１ａから突出する部分を第２鉄筋突出部３３Ｂとする。第２実施形態の第２鉄筋突出部３３Ｂは、直線状に延びている。 In the second embodiment, the first reinforcing bars 22B of the first precast member 2B extend linearly in the first horizontal direction, and the part on the other side in the first horizontal direction extends from the first joint end surface 21a of the first concrete part 21. It protrudes to the other side in the first horizontal direction. Also in the second embodiment, the portion of the first reinforcing bar 22B that protrudes from the first joint end surface 21a is defined as a first reinforcing bar protrusion 23B. The first reinforcing bar protrusion 23B of the second embodiment extends linearly.
The second reinforcing bar 32B of the second precast member 3B extends linearly in the first horizontal direction, and a portion on one side in the first horizontal direction extends from the second joint end surface 31a of the second concrete part 31 to one side in the first horizontal direction. protrudes to the side. Also in the second embodiment, the portion of the second reinforcing bar 32B that protrudes from the second joint end surface 31a is defined as a second reinforcing bar protrusion 33B. The second reinforcing bar protrusion 33B of the second embodiment extends linearly.

第１鉄筋突出部２３Ｂと、第２鉄筋突出部３３Ｂとは、第１水平方向に重なるように同軸に配置されている。第１鉄筋突出部２３Ｂと、第２鉄筋突出部３３Ｂとは第１水平方向に間隔をあけて配置されていて、第１鉄筋突出部２３Ｂと第２鉄筋突出部３３Ｂとの間の鉄筋接合部９によって接合されている。 The first reinforcing bar protrusion 23B and the second reinforcing bar protruding part 33B are coaxially arranged so as to overlap in the first horizontal direction. The first reinforcing bar protruding part 23B and the second reinforcing bar protruding part 33B are arranged at intervals in the first horizontal direction, and the reinforcing bar joint between the first reinforcing bar protruding part 23B and the second reinforcing bar protruding part 33B 9.

第２実施形態の第１プレキャスト部材２Ｂと第２プレキャスト部材３Ｂの接合方法（プレキャストコンクリート部材の接合方法）では、プレキャストコンクリート部材接合工程において、水硬性混合物積層造形工程の前に第１鉄筋２２Ｂと第２鉄筋３２Ｂとを接合する鉄筋接合工程を行う。 In the method of joining the first precast member 2B and the second precast member 3B of the second embodiment (the method of joining precast concrete members), in the precast concrete member joining step, the first reinforcing bar 22B is A reinforcing bar joining step is performed to join the second reinforcing bars 32B.

鉄筋接合工程は、接合部形成領域１１の第１鉄筋突出部２３Ｂと第２鉄筋突出部３３Ｂとの間に第３付加製造装置７３（例えば、３Ｄプリンター）の第３ノズル７３１から第１鉄筋突出部２３Ｂと第２鉄筋突出部３３Ｂとを接合するための鉄筋接合部９の鉄筋接合材料１５を噴射して積層造形し、第１鉄筋突出部２３Ｂと第２鉄筋突出部３３Ｂとの間に鉄筋接合部９を製作し、第１鉄筋突出部２３Ｂと第２鉄筋突出部３３Ｂとを接合する。鉄筋接合材料１５は、例えば、金属などである。
第３付加製造装置７３の第３ノズル７３１についても、例えば遠隔操作による移動や自動走行が可能なロボットアームやガントリークレーンなど（不図示）に装着されている。図３では、第３付加製造装置７３の第３ノズル７３１のみが示されている。なお、第３付加製造装置７３の構成は、特に限定されない。また、第３付加製造装置７３およびロボットアーム（またはガントリークレーンなど）の少なくとも一方が遠隔操作による移動や自動走行が可能であってもよく、第３付加製造装置７３およびロボットアーム（またはガントリークレーンなど）の双方が遠隔操作による移動や自動走行が可能であってもよい。
 In the reinforcing bar joining process, the first reinforcing bar protrudes from the third nozzle 731 of the third additive manufacturing device 73 (for example, a 3D printer) between the first reinforcing bar protrusion 23B and the second reinforcing bar protruding part 33B of the joint forming area 11. The reinforcing bar joining material 15 of the reinforcing bar joining part 9 for joining the part 23B and the second reinforcing bar protruding part 33B is injected and layered, and the reinforcing bar is formed between the first reinforcing bar protruding part 23B and the second reinforcing bar protruding part 33B. The joint portion 9 is manufactured and the first reinforcing bar protrusion 23B and the second reinforcing bar protrusion 33B are joined. The reinforcing bar joining material 15 is, for example, metal.
The third nozzle 731 of the third additive manufacturing device 73 is also attached to a robot arm, gantry crane, or the like (not shown) that can be moved by remote control or automatically run, for example. In FIG. 3 , only the third nozzle 731 of the third additive manufacturing device 73 is shown. Note that the configuration of the third additive manufacturing device 73 is not particularly limited. Further, at least one of the third additive manufacturing device 73 and the robot arm (or the gantry crane, etc.) may be capable of moving by remote control or automatically traveling, and the third additive manufacturing device 73 and the robot arm (or the gantry crane, etc.) ) may be capable of remote movement or automatic driving.

接合部形成領域１１に水硬性混合物１２を噴射して積層造形する水硬性混合物積層造形工程では、第１鉄筋突出部２３Ｂおよび第２鉄筋突出部３３Ｂに加え、鉄筋接合部９も水硬性混合物１２に埋設する。
水硬性混合物積層造形工程は、鉄筋接合部９が全て形成される前に、鉄筋接合部９が形成された部分（第３付加製造装置７３の第３ノズル７３１から噴射された鉄筋接合材料１５が所定の強度となった部分）から順次行うようにしてもよい。すなわち、鉄筋接合工程と水硬性混合物積層造形工程とが同時に行われてもよい。 In the hydraulic mixture additive manufacturing step of injecting the hydraulic mixture 12 into the joint forming region 11 for additive manufacturing, in addition to the first reinforcing bar protrusion 23B and the second reinforcing bar protruding part 33B, the reinforcing bar joint 9 is also coated with the hydraulic mixture 12. to be buried.
In the hydraulic mixture additive manufacturing process, before all the reinforcing bar joints 9 are formed, the part where the reinforcing bar joints 9 are formed (the reinforcing bar joining material 15 injected from the third nozzle 731 of the third additive manufacturing device 73) is The process may be performed sequentially starting from the part where the strength has reached a predetermined level. That is, the reinforcing bar joining process and the hydraulic mixture additive manufacturing process may be performed simultaneously.

上記の第２実施形態によるプレキャストコンクリート部材の接合方法では、第１プレキャスト部材２Ｂの第１鉄筋２２Ｂと第２プレキャスト部材３Ｂの第２鉄筋３２Ｂとを接合する鉄筋接合工程を有することにより、第１プレキャスト部材２Ｂと第２プレキャスト部材３Ｂとを確実に接合することができる。 The method for joining precast concrete members according to the second embodiment described above includes the step of joining the first reinforcing bars 22B of the first precast member 2B and the second reinforcing bars 32B of the second precast member 3B. Precast member 2B and second precast member 3B can be reliably joined.

上記の第２実施形態によるプレキャストコンクリート部材の接合方法では、鉄筋接合工程では、第３付加製造装置７３の第３ノズル７３１から鉄筋接合材料１５を噴射して積層造形し、第１鉄筋２２Ｂと第２鉄筋３２Ｂとを接合していることにより、第１鉄筋２２Ｂと第２鉄筋３２Ｂとの接合を自動的に行うことができて生産性が向上するため、労力を軽減できるとともに工期を短縮できる。 In the method for joining precast concrete members according to the second embodiment, in the reinforcing bar joining step, the reinforcing bar joining material 15 is injected from the third nozzle 731 of the third additive manufacturing device 73 to perform additive manufacturing, and the first reinforcing bars 22B and the first reinforcing bars 22B and By joining the two reinforcing bars 32B, the first reinforcing bars 22B and the second reinforcing bars 32B can be automatically joined and productivity is improved, so that labor can be reduced and the construction period can be shortened.

以上、本発明による第１プレキャスト部材２，２Ｂと第２プレキャスト部材３，３Ｂの接合方法（プレキャストコンクリート部材の接合方法）の実施形態について説明したが、本発明は上記の実施形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。
例えば、上記の実施形態では、第１プレキャスト部材２，２Ｂおよび第２プレキャスト部材３，３Ｂは、床版を構築する部材であるが、床版に限定されず、柱、梁、壁、ボックスカルバートなどを構築する部材であってもよい。また、第１プレキャスト部材２，２Ｂおよび第２プレキャスト部材３，３Ｂの一方が柱の部材で他方が梁の部材で接合部１が柱梁接合部であってもよい。 The embodiments of the method for joining the first precast members 2, 2B and the second precast members 3, 3B (method for joining precast concrete members) according to the present invention have been described above, but the present invention is limited to the above embodiments. It is not intended to be a complete set, and may be modified as appropriate without departing from the spirit thereof.
For example, in the above embodiment, the first precast members 2, 2B and the second precast members 3, 3B are members for constructing a floor slab, but are not limited to floor slabs, and include columns, beams, walls, and box culverts. It may also be a member for constructing such as. Alternatively, one of the first precast members 2, 2B and the second precast members 3, 3B may be a column member, the other may be a beam member, and the joint portion 1 may be a column-beam joint.

上記の実施形態では、プレキャストコンクリート部材接合工程において、型枠１３を設置して型枠１３の内部に水硬性混合物１２を噴射して積層造形し、接合部１，１Ｂを構築している。これに対し、型枠１３を設置せずに、接合部形成領域１１に網状の定着部材を設置し、この定着部材に水硬性混合物１２を吹き付けて積層させて接合部１，１Ｂを構築するようにしてもよい。
このような場合は、予め製作した定着部材を接合部形成領域１１に設置してもよいし、現場において接合部形成領域１１に付加製造装置で定着部材の材料（たとえば、金属やＦＲＰなど）を噴射して積層造形し、定着部材を形成してもよい。 In the above embodiment, in the precast concrete member joining process, the formwork 13 is installed, and the hydraulic mixture 12 is injected into the formwork 13 for additive manufacturing to construct the joint parts 1 and 1B. On the other hand, instead of installing the formwork 13, a mesh-like fixing member is installed in the joint forming area 11, and the hydraulic mixture 12 is sprayed onto this fixing member and laminated to construct the joints 1, 1B. You may also do so.
In such a case, a prefabricated fixing member may be installed in the joint forming area 11, or the fixing member material (for example, metal, FRP, etc.) may be applied to the joint forming area 11 on-site using an additive manufacturing device. The fixing member may be formed by spraying and layered modeling.

上記の実施形態では、水硬性混合物１２を第１ノズル７１１から噴射して積層造形することで接合部１，１Ｂを構築しているが、第１ノズル７１１から噴射せずに出された水硬性混合物１２を積層造形することで接合部１，１Ｂを構築するようにしてもよい。例えば、流動性のあるモルタル材料を接合部形成領域１１に流し込むようにして接合部１，１Ｂを構築してもよい。 In the above embodiment, the joint parts 1 and 1B are constructed by injecting the hydraulic mixture 12 from the first nozzle 711 and performing additive manufacturing, but the hydraulic mixture 12 that is not injected from the first nozzle 711 The joint parts 1 and 1B may be constructed by additively manufacturing the mixture 12. For example, the joints 1 and 1B may be constructed by pouring a fluid mortar material into the joint formation region 11.

上記の第１実施形態では、接合部形成領域１１に接合部１を補強する補強部材として補強鉄筋６を設置しているが、接合部形成領域１１に補強鉄筋６に代わる補強部材を設置してもよい。また、接合部形成領域１１に補強鉄筋６と、補強鉄筋６以外の補強部材を設置してもよい。補強鉄筋６以外の補強部材も第２付加製造装置の第２ノズルから補強材料を積層造形して製作してもよい。例えば、樹脂製の補強部材が設置される場合には、補強部材を第２付加製造装置の第２ノズルから補強材料となる樹脂材料を積層造形して製作してもよい。 In the first embodiment described above, reinforcing bars 6 are installed in the joint forming area 11 as reinforcing members for reinforcing the joint 1, but reinforcing members replacing the reinforcing bars 6 are installed in the joint forming area 11. Good too. Further, the reinforcing reinforcing bars 6 and reinforcing members other than the reinforcing reinforcing bars 6 may be installed in the joint forming region 11. Reinforcing members other than the reinforcing reinforcing bars 6 may also be manufactured by additively manufacturing reinforcing materials from the second nozzle of the second additive manufacturing device. For example, when a reinforcing member made of resin is installed, the reinforcing member may be manufactured by laminating a resin material serving as a reinforcing material from a second nozzle of a second additive manufacturing device.

上記の第２実施形態では、鉄筋接合工程では、第３付加製造装置７３の第３ノズル７３１から鉄筋接合材料１５を噴射して積層造形し、第１鉄筋突出部２３Ｂと第２鉄筋突出部３３Ｂとを接合しているが、付加製造装置を使用せずに従来のように、重ね継手、ガス圧接継手、機械式継手、溶接式継手などで接合してもよい。 In the second embodiment described above, in the reinforcing bar joining process, the reinforcing bar joining material 15 is injected from the third nozzle 731 of the third additive manufacturing device 73 to perform additive manufacturing, and the first reinforcing bar protruding portion 23B and the second reinforcing bar protruding portion 33B are However, they may be joined using conventional methods such as lap joints, gas pressure joints, mechanical joints, welding joints, etc., without using additive manufacturing equipment.

上記の第１実施形態では、接合部１に補強部材として補強鉄筋６を設置し、第２実施形態では、接合部１Ｂの第１鉄筋突出部２３Ｂと第２鉄筋突出部３３Ｂとを接合している。これに対し、接合部１に補強部材を設置するとともに、接合部１の第１鉄筋突出部２３と第２鉄筋突出部３３とを接合してもよい。 In the first embodiment described above, reinforcing reinforcing bars 6 are installed as reinforcing members in the joint 1, and in the second embodiment, the first reinforcing bar protrusion 23B and the second reinforcing bar protruding part 33B of the joining part 1B are joined. There is. On the other hand, a reinforcing member may be installed in the joint 1 and the first reinforcing bar protrusion 23 and the second reinforcing bar protrusion 33 of the joining part 1 may be joined.

例えば、図４に示す接合部１Ｃのように、第１プレキャスト部材２から接合部１Ｃに突出するＵ字形状の第１鉄筋突出部２３と、第２プレキャスト部材３から接合部１Ｃに突出するＵ字形状の第２鉄筋突出部３３とが第２水平方向に重なって配置され、第１鉄筋突出部２３と第２鉄筋突出部３３とが接合されるとともに、補強鉄筋６が設置されてもよい。このような場合も、第１鉄筋突出部２３Ｃと第２鉄筋突出部３３Ｃとを第３付加製造装置７３（例えば、３Ｄプリンター）の第３ノズル７３１から鉄筋接合材料１５を噴射して積層造形して、第１鉄筋突出部２３Ｃと第２鉄筋突出部３３Ｃとを接合してもよい。 For example, like a joint 1C shown in FIG. 4, a U-shaped first reinforcing bar protrusion 23 projects from the first precast member 2 to the joint 1C, and a U-shaped first reinforcing bar protrusion 23 projects from the second precast member 3 to the joint 1C. The second reinforcing bar protrusions 33 having a letter-shaped shape may be arranged to overlap in the second horizontal direction, the first reinforcing bar protruding parts 23 and the second reinforcing bar protruding parts 33 may be joined, and the reinforcing reinforcing bars 6 may be installed. . In such a case, the first reinforcing bar protrusion 23C and the second reinforcing bar protrusion 33C are additively manufactured by injecting the reinforcing bar joining material 15 from the third nozzle 731 of the third additive manufacturing device 73 (for example, a 3D printer). Then, the first reinforcing bar protrusion 23C and the second reinforcing bar protrusion 33C may be joined.

１，１Ｂ，１Ｃ 接合部
２，２Ｂ 第１プレキャスト部材（プレキャストコンクリート部材）
３，３Ｂ 第２プレキャスト部材（プレキャストコンクリート部材）
６ 補強鉄筋（補強部材）
９ 鉄筋接合部
１１ 接合部形成領域
１２ 水硬性混合物
１５ 鉄筋接合材料
２２，２２Ｂ 第１鉄筋
２３，２３Ｂ，２３Ｃ 第１鉄筋突出部
３２，３２Ｂ 第２鉄筋
３３，３３Ｂ，３３Ｃ 第２鉄筋突出部
７１ 第１付加製造装置
７３ 第３付加製造装置
７１１ 第１ノズル
７３１ 第３ノズル 1, 1B, 1C Joint part 2, 2B 1st precast member (precast concrete member)
3,3B Second precast member (precast concrete member)
6 Reinforcement bars (reinforcement members)
9 Rebar joint 11 Joint forming area 12 Hydraulic mixture 15 Rebar joint material 22, 22B First reinforcing bar 23, 23B, 23C First reinforcing bar protrusion 32, 32B Second reinforcing bar 33, 33B, 33C Second reinforcing bar protruding part 71 First additive manufacturing device 73 Third additive manufacturing device 711 First nozzle 731 Third nozzle

Claims (2)

複数のプレキャストコンクリート部材をそれぞれ設置位置に据え付け、前記複数のプレキャストコンクリート部材を接合する接合部が形成される接合部形成領域に、前記複数のプレキャストコンクリート部材それぞれの鉄筋を配置するプレキャストコンクリート部材据え付け工程と、
前記接合部を形成して前記複数のプレキャストコンクリート部材を接合するプレキャストコンクリート部材接合工程と、を有し、
前記プレキャストコンクリート部材接合工程では、前記接合部形成領域に３Ｄプリンターからなる第１付加製造装置の第１ノズルで水硬性混合物を積層造形し、
前記接合部形成領域に、前記接合部を補強するための補強部材を設置する補強部材設置工程を有し、
前記補強部材は、直線状の鉄筋であり、
補強部材設置工程では、前記接合部形成領域に３Ｄプリンターからなる第２付加製造装置の第２ノズルで補強材料を積層造形して、前記接合部形成領域に前記補強部材を製作することを特徴とするプレキャストコンクリート部材の接合方法。 A precast concrete member installation step of installing a plurality of precast concrete members at respective installation positions, and arranging reinforcing bars for each of the plurality of precast concrete members in a joint forming area where a joint for joining the plurality of precast concrete members is formed. and,
a precast concrete member joining step of forming the joint part and joining the plurality of precast concrete members,
In the precast concrete member joining step, a hydraulic mixture is layered in the joint forming area with a first nozzle of a first additive manufacturing device including a 3D printer ,
a reinforcing member installation step of installing a reinforcing member for reinforcing the joint in the joint forming area;
The reinforcing member is a straight reinforcing bar,
In the reinforcing member installation step, the reinforcing member is manufactured in the joint forming area by additively manufacturing a reinforcing material in the joint forming area using a second nozzle of a second additive manufacturing device including a 3D printer. A method for joining precast concrete members. 複数のプレキャストコンクリート部材をそれぞれ設置位置に据え付け、前記複数のプレキャストコンクリート部材を接合する接合部が形成される接合部形成領域に、前記複数のプレキャストコンクリート部材それぞれの鉄筋を配置するプレキャストコンクリート部材据え付け工程と、
前記接合部を形成して前記複数のプレキャストコンクリート部材を接合するプレキャストコンクリート部材接合工程と、を有し、
前記プレキャストコンクリート部材接合工程では、前記接合部形成領域に３Ｄプリンターからなる第１付加製造装置の第１ノズルで水硬性混合物を積層造形し、
前記複数のプレキャストコンクリート部材の前記鉄筋同士を接合する鉄筋接合工程を有し、
前記鉄筋接合工程では、３Ｄプリンターからなる第３付加製造装置の第３ノズルで鉄筋接合材料を積層造形して前記鉄筋同士を直接接合することを特徴とするプレキャストコンクリート部材の接合方法。 A precast concrete member installation step of installing a plurality of precast concrete members at respective installation positions, and arranging reinforcing bars for each of the plurality of precast concrete members in a joint forming area where a joint for joining the plurality of precast concrete members is formed. and,
a precast concrete member joining step of forming the joint part and joining the plurality of precast concrete members,
In the precast concrete member joining step, a hydraulic mixture is layered in the joint forming area with a first nozzle of a first additive manufacturing device including a 3D printer ,
comprising a reinforcing bar joining step of joining the reinforcing bars of the plurality of precast concrete members,
A method for joining precast concrete members, characterized in that, in the reinforcing bar joining step, a reinforcing bar joining material is additively manufactured using a third nozzle of a third additive manufacturing device including a 3D printer, and the reinforcing bars are directly joined to each other .
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Publication number Priority date Publication date Assignee Title
JP2002220924A (en) 2001-01-24 2002-08-09 Tokyo Concrete Pomp Kk Head nozzle for concrete transport pipe
JP2008008120A (en) 2006-06-30 2008-01-17 Takenaka Komuten Co Ltd Joint structure of precast concrete member
JP2015186851A (en) 2014-03-26 2015-10-29 株式会社竹中工務店 Construction method of molded article
JP2018199939A (en) 2017-05-26 2018-12-20 大成建設株式会社 Construction method of composite structure, composite structure and construction equipment for composite structure
JP2019537521A (en) 2016-09-14 2019-12-26 アーマトロン システムズ，エルエルシー Method for building reinforced cement by high-speed extrusion printing and apparatus for using the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002220924A (en) 2001-01-24 2002-08-09 Tokyo Concrete Pomp Kk Head nozzle for concrete transport pipe
JP2008008120A (en) 2006-06-30 2008-01-17 Takenaka Komuten Co Ltd Joint structure of precast concrete member
JP2015186851A (en) 2014-03-26 2015-10-29 株式会社竹中工務店 Construction method of molded article
JP2019537521A (en) 2016-09-14 2019-12-26 アーマトロン システムズ，エルエルシー Method for building reinforced cement by high-speed extrusion printing and apparatus for using the same
JP2018199939A (en) 2017-05-26 2018-12-20 大成建設株式会社 Construction method of composite structure, composite structure and construction equipment for composite structure

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