JP7120822B2 - Joining method and joining structure - Google Patents

Joining method and joining structure Download PDF

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JP7120822B2
JP7120822B2 JP2018117899A JP2018117899A JP7120822B2 JP 7120822 B2 JP7120822 B2 JP 7120822B2 JP 2018117899 A JP2018117899 A JP 2018117899A JP 2018117899 A JP2018117899 A JP 2018117899A JP 7120822 B2 JP7120822 B2 JP 7120822B2
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JP2019218781A (en
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直樹 荒金
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Toray Engineering Co Ltd
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Toyo Construction Co Ltd
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Description

本発明は、コンクリート造の既存構造物に対して別体の追加構造物を接合する接合工法及び接合構造に関するものである。 TECHNICAL FIELD The present invention relates to a joining method and joining structure for joining a separate additional structure to an existing concrete structure.

あと施工アンカーは、従来から様々な用途に使用されているが、あと施工アンカーが接合部に使用される際には、圧縮応力又はせん断力に対して設計される(例えば特許文献1参照)。すなわち、あと施工アンカーは、長期の引張応力が作用する接合部に対しては、信頼性等の観点から利用されず、このような接合部には、通常、PC鋼棒等を用いた貫通型のアンカーが使用される。 Post-installed anchors have traditionally been used in a variety of applications, but when post-installed anchors are used in joints, they are designed for compressive or shear stresses (see, for example, US Pat. In other words, post-installed anchors are not used for joints where long-term tensile stress acts from the viewpoint of reliability, etc., and for such joints, penetration type anchors using PC steel bars or the like are usually used. anchors are used.

特開2014-177780号公報JP 2014-177780 A

ここで、既存構造物に対して追加構造物を接合する場合は、引張力を保持するために、既存構造物を貫通して貫通型のアンカーを取り付ける必要がある。しかしながら、このような既存構造物を貫通する工事は、室内からの作業も必要となるため、既存構造物の利用者に影響を与える虞があると共に、工事自体が大がかりとなり、コストや工期が増大してしまう。
本発明は上記課題に鑑みてなされたものであり、その目的とするところは、引張力が作用するような追加構造物を既存構造物に対して接合する場合でも、あと施工アンカーを使用してコスト及び工期を抑制することにある。
Here, when joining an additional structure to an existing structure, it is necessary to attach penetrating anchors through the existing structure in order to maintain the tensile force. However, such construction work that penetrates existing structures requires work from inside the building, which may affect the users of existing structures, and the construction itself becomes large-scale, increasing costs and construction periods. Resulting in.
The present invention has been made in view of the above problems, and its object is to use post-installed anchors even when joining an additional structure to which a tensile force acts on an existing structure. It is to suppress the cost and construction period.

(発明の態様)
以下の発明の態様は、本発明の構成を例示するものであり、本発明の多様な構成の理解を容易にするために、項別けして説明するものである。各項は、本発明の技術的範囲を限定するものではなく、発明を実施するための最良の形態を参酌しつつ、各項の構成要素の一部を置換し、削除し、又は、更に他の構成要素を付加したものについても、本願発明の技術的範囲に含まれ得るものである。
(Mode of invention)
The following aspects of the invention exemplify configurations of the present invention, and will be described separately in order to facilitate understanding of the various configurations of the present invention. Each term does not limit the technical scope of the present invention, and while considering the best mode for carrying out the invention, replaces, deletes, or further The technical scope of the present invention can also include the addition of the constituent elements.

(1)コンクリート造の既存構造物に対し、別体の追加構造物を接合する接合工法であって、前記既存構造物と前記追加構造物との接合部分を跨ぐ態様で、前記既存構造物と前記追加構造物との双方に密着する接続部材を配置し、該接続部材を貫通して、該接続部材と、前記既存構造物並びに前記追加構造物との各々にあと施工アンカーを打込み、前記接続部材と、前記既存構造物並びに前記追加構造物とを接合する接合工法。 (1) A joining method for joining a separate additional structure to an existing concrete structure, wherein the joint between the existing structure and the additional structure is straddled. arranging a connection member that is in close contact with both the additional structure, penetrating the connection member and driving post-installed anchors into each of the connection member, the existing structure and the additional structure, and the connection; A joining method for joining a member to the existing structure and the additional structure.

本項に記載の接合工法は、コンクリート造の既存構造物に対して別体の追加構造物を接合するものであり、まず、既存構造物と追加構造物との接合部分を跨ぐ態様で、既存構造物と追加構造物との双方に密着する接続部材を配置する。すなわち、既存構造物に対して追加構造物を接合するための、既存構造物と追加構造物とが接触する適切な位置に追加構造物を配置し、この状態で、既存構造物と追加構造物との接合部分(接触部分)を跨ぐように接続部材を配置する。このとき、接続部材は、少なくとも、既存構造物に対する追加構造物の接合方向と平行な方向に延在するように配置される。更に、接続部材には、前記のように配置された状態で、既存構造物と追加構造物との双方に密着する形状及び大きさを備えるものを使用する。 The joining method described in this section is to join a separate additional structure to an existing concrete structure. A connecting member is placed in close contact with both the structure and the additional structure. That is, in order to join the additional structure to the existing structure, the additional structure is placed at an appropriate position where the existing structure and the additional structure contact, and in this state, the existing structure and the additional structure A connection member is arranged so as to straddle the joint portion (contact portion) with the . At this time, the connection member is arranged so as to extend at least in a direction parallel to the joining direction of the additional structure to the existing structure. Furthermore, the connecting member is of a shape and size that, when arranged as described above, adheres to both the existing structure and the additional structure.

そして、上記のように配置した接続部材を貫通して、この接続部材と、既存構造物並びに追加構造物との各々に、あと施工アンカーを打込む。具体的には、既存構造物に対する追加構造物の接合方向と平行な方向に延在している接続部材の、既存構造物に密着している部位に対し、既存構造物に対する追加構造物の接合方向に対して略直交する方向から、あと施工アンカーを打込み、この際、接続部材を貫通して既存構造物の内部まで打込む。同様に、接続部材の、追加構造物に密着している部位に対し、既存構造物に対する追加構造物の接合方向に対して略直交する方向から、あと施工アンカーを打込み、この際、接続部材を貫通して追加構造物の内部まで打込む。これにより、接続部材と、既存構造物並びに追加構造物とを接合するものである。なお、ここでのあと施工アンカーの打込みとは、あと施工アンカーに用いる金属系アンカーや接着系アンカー等の種類に応じて、各あと施工アンカーの打込みに必要な作業、例えば、打込み部分の削孔、樹脂の注入等の作業を包含するものである。 Then, post-installed anchors are driven through the connecting member arranged as described above and into each of the connecting member, the existing structure, and the additional structure. Specifically, joining the additional structure to the existing structure to the part of the connection member extending in the direction parallel to the joining direction of the additional structure to the existing structure, which is in close contact with the existing structure. A post-installation anchor is driven in from a direction substantially orthogonal to the direction, and at this time, it is driven into the existing structure through the connection member. Similarly, a post-installed anchor is driven into the portion of the connection member that is in close contact with the additional structure from a direction substantially perpendicular to the joining direction of the additional structure to the existing structure. Drive through to the inside of the additional structure. Thereby, the connection member is joined to the existing structure and the additional structure. It should be noted that the driving of post-installed anchors here refers to the work required for driving each post-installed anchor, such as drilling of the driven part, depending on the type of the post-installed anchor such as a metal anchor or an adhesive anchor used for the post-installed anchor. , resin injection, etc.

本項に記載の接合工法は、上述したようにあと施工アンカーを使用することで、既存構造物に対する追加構造物の接合方向と平行な方向に作用する引張力を、既存構造物に対する追加構造物の接合方向と略直交する方向に打込まれたあと施工アンカーにより、せん断力として処理するものとなる。すなわち、既存構造物と追加構造物との各々に打込まれたあと施工アンカーには、それらの打込み方向と略直交する方向の引張力が作用するため、その引張力を所謂ダウエル効果によって処理するものである。これにより、既存構造物に対する追加構造物の接合が、あと施工アンカーを使用して実現されるため、例えば既存構造物を貫通して貫通型のアンカーを取り付ける場合と比較して、既存構造物の室内からの作業が不要となる等、施工内容が容易なものとなり、コスト及び工期が抑制されるものである。加えて、引張力が作用するような追加構造物を既存構造物に対して接合しながらも、あと施工アンカーにより引張力をせん断力として処理しているため、耐力的にも何ら問題はなく、十分な信頼性及び安全性が確保されるものである。 The joining method described in this section uses post-installed anchors as described above, so that the tensile force acting in the direction parallel to the joining direction of the additional structure to the existing structure is applied to the additional structure. After being hammered in the direction substantially perpendicular to the joining direction, the anchor is used to treat it as a shear force. That is, since the post-installed anchors that are driven into the existing structure and the additional structure are subjected to a tensile force in a direction substantially perpendicular to the driving direction, the tensile force is processed by the so-called dowel effect. It is. As a result, the additional structure can be joined to the existing structure using post-installed anchors. Work from inside the room is no longer necessary, making the construction content easier and reducing the cost and construction period. In addition, even though the additional structure that is subject to tensile force is joined to the existing structure, the tensile force is treated as shear force by post-installed anchors, so there is no problem in terms of strength. Sufficient reliability and safety are ensured.

(2)上記(1)項において、前記既存構造物と前記追加構造物との各々に対し、少なくとも互いに直交する2方向に向けて前記あと施工アンカーが打込まれるように、前記接続部材を複数固定する接合工法(請求項1)。(2) In the above item (1), a plurality of the connecting members are provided so that the post-installed anchors are driven into each of the existing structure and the additional structure in at least two mutually orthogonal directions. A joining method for fixing (claim 1).
本項に記載の接合工法は、既存構造物と追加構造物との各々に対し、少なくとも互いに直交する2方向に向けてあと施工アンカーが打込まれるように、接続部材を複数固定するものである。例えば、少なくとも1つの接続部材を、既存構造物及び追加構造物に対して上方から密着させて配置し、上方から既存構造物及び追加構造物の各々へ向けてあと施工アンカーを打込んで固定した場合は、更に別の接続部材を、既存構造物及び追加構造物に対して側方から密着させて配置する。そして、その接続部材を、側方から既存構造物及び追加構造物の各々へ向けてあと施工アンカーを打込んで固定することで、これらのあと施工アンカーと、初めに固定した接続部材に打込まれたあと施工アンカーとが、既存構造物及び追加構造物に対して互いに直交する2方向に向けて打込まれた状態になる。このように、少なくとも互いに直交する2方向に向けて、あと施工アンカーが打込まれることにより、追加構造物がズレたり回転したりすることなく、強固に接合されることとなる。 The joining method described in this section is to fix a plurality of connection members so that the post-installed anchors are driven in at least two mutually orthogonal directions to each of the existing structure and the additional structure. . For example, at least one connection member is placed in close contact with the existing structure and the additional structure from above, and a post-installed anchor is driven and fixed to each of the existing structure and the additional structure from above. In this case, another connecting member is placed in close contact with the existing structure and the additional structure from the side. Then, by driving the post-installed anchor toward each of the existing structure and the additional structure from the side to fix the connecting member, the post-installed anchor and the initially fixed connecting member are driven into the post-installed anchor. The post-installed anchor is driven into the existing structure and the additional structure in two directions perpendicular to each other. In this manner, the post-installed anchors are driven in at least two directions orthogonal to each other, so that the additional structure is firmly joined without shifting or rotating.

(3)上記(2)項において、前記接続部材と、前記既存構造物並びに前記追加構造物との密着面を同一平面上に位置させ、平板状をなす前記接続部材を用いる接合工法(請求項2)。(3) In the above item (2), a joining method using the connection member having a flat plate shape such that the contact surfaces of the connection member and the existing structure and the additional structure are positioned on the same plane (claim 2).
本項に記載の接合工法は、既存構造物に対して接合するための位置に追加構造物を配置する際に、既存構造物の任意の面と追加構造物の任意の面とが同一平面上に位置するように、追加構造物を配置する。更に、接続部材として平板状の接続部材を用い、同一平面上に位置する既存構造物の面と追加構造物の面との双方に密着させて配置するものである。このため、あと施工アンカーを、接続部材の、既存構造物並びに追加構造物との密着面とは反対の面から、それらの面と略直交する方向へ向けて打込むことになる。これにより、既存構造物への密着面と追加構造物への密着面との間に段差がある接続部材や、肉厚の接続部材等を用いる場合と比較して、あと施工アンカーの打込みが容易になり、コストや工期が更に抑制されるものとなる。 The joining method described in this section ensures that any surface of the existing structure and any surface of the additional structure are on the same plane when placing the additional structure at the position for joining to the existing structure. Place an additional structure so that it is located at Furthermore, a plate-like connecting member is used as the connecting member, and is placed in close contact with both the surface of the existing structure and the surface of the additional structure located on the same plane. For this reason, the post-installed anchor is to be driven in from the surface of the connection member opposite to the surface of the connection member that is in close contact with the existing structure and the additional structure in a direction substantially orthogonal to these surfaces. As a result, it is easier to drive post-installed anchors compared to using a connection member with a step between the adhesion surface to the existing structure and the adhesion surface to the additional structure, or a thick connection member. , and the cost and construction period can be further suppressed.

(4)上記(2)(3)項において、前記あと施工アンカーとして、ディスクアンカーを使用する接合工法(請求項)。
本項に記載の接合工法は、あと施工アンカーとして、一般的なあと施工アンカーよりも剛性が高いディスクアンカーを使用することで、せん断力に対する耐性が非常に高まるため、信頼性及び安全性が向上すると共に、打込み本数が低減されて工期がより一層抑制されるものとなる。
(4) In the above items (2) and (3), a joining method using disc anchors as the post-installed anchors (claim 3 ).
The joining method described in this section uses disk anchors, which have higher rigidity than general post-installed anchors, as post-installed anchors, which greatly increases resistance to shearing force, improving reliability and safety. At the same time, the number of pieces to be driven is reduced, and the construction period is further reduced.

(5)コンクリート造の既存構造物に対し、別体の追加構造物が接合された接合構造であって、前記既存構造物と前記追加構造物との接合部分を跨ぐ態様で、前記既存構造物と前記追加構造物との双方に密着して配置された接続部材が貫通されて、該接続部材と、前記既存構造物並びに前記追加構造物との各々にあと施工アンカーが打込まれ、前記接続部材と、前記既存構造物並びに前記追加構造物とが接合されている接合構造。
(6)上記(5)項において、前記接続部材が複数固定され、該複数の接続部材を固定している複数の前記あと施工アンカーに、前記既存構造物と前記追加構造物との各々に対し、少なくとも互いに直交する2方向に向けて打込まれたあと施工アンカーが含まれている接合構造(請求項4)。
(5) A joint structure in which a separate additional structure is joined to an existing concrete structure, wherein the existing structure straddles the joint portion between the existing structure and the additional structure. and the additional structure are penetrated by a connecting member arranged in close contact with each other, and post-installed anchors are driven into each of the connecting member, the existing structure and the additional structure, and the connection A joint structure in which a member is joined to the existing structure and the additional structure.
(6) In the above item (5), a plurality of the connecting members are fixed, and the plurality of post-installed anchors fixing the plurality of connecting members are attached to the existing structure and the additional structure. , a joint structure including post-installed anchors driven in at least two directions orthogonal to each other (claim 4).

(7)上記(6)項において、前記接続部材と、前記既存構造物並びに前記追加構造物との密着面は同一平面上に位置し、前記接続部材が平板状をなしている接合構造(請求項5)。
(8)上記(6)(7)項において、前記あと施工アンカーとして、ディスクアンカーが使用されている接合構造(請求項)。
そして、(5)から(8)項に記載の接合構造は、各々、上記(1)から(4)項の接合工法を利用して実現されることで、上記(1)から(4)項の接合工法と同等の作用を奏するものである。
(7) In the above item (6), the joining structure (claim Item 5).
(8) The joint structure in (6) and (7) above, wherein a disk anchor is used as the post-installed anchor (claim 6 ).
Then, the joint structures described in items (5) to (8) are realized by using the joining construction methods described in items (1) to (4), respectively, so that items (1) to (4) are realized. It has the same effect as the joining method.

本発明は上記のような構成であるため、引張力が作用するような追加構造物を既存構造物に対して接合する場合でも、あと施工アンカーを使用してコスト及び工期を抑制することが可能となる。 Since the present invention is configured as described above, it is possible to reduce the cost and construction period by using post-installed anchors even when joining an additional structure on which a tensile force acts to an existing structure. becomes.

本発明の実施の形態に係る接合構造を模式的に示す模式図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows typically the junction structure which concerns on embodiment of this invention. 本発明の実施の形態に係る接合工法の一例を示すフロー図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a flowchart which shows an example of the joining construction method which concerns on embodiment of this invention.

以下、本発明を実施するための形態を、添付図面に基づき説明する。ここで、従来技術と同一部分、若しくは相当する部分については、詳しい説明を省略することとし、又、図面の全体にわたって、同一部分若しくは対応する部分は、同一の符号で示している。
図1は、本発明の実施の形態に係る接合構造10の構成を、側方から模式的に示している。図示のように、接合構造10は、コンクリート造の既存構造物12に対して、図示の例では図中左方向から、別体の追加構造物14が接合されたものである。又、接合構造10は、図示の例において、2つの接続部材18(18A、18B)と、4つのあと施工アンカー30(30A~30D)とが利用されている。
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the present invention will be described based on the accompanying drawings. Here, detailed description of the same or corresponding parts as in the prior art is omitted, and the same or corresponding parts are indicated by the same reference numerals throughout the drawings.
FIG. 1 schematically shows the configuration of a joint structure 10 according to an embodiment of the invention from the side. As shown in the drawing, the joint structure 10 is formed by joining a separate additional structure 14 to an existing concrete structure 12 from the left side of the drawing in the example shown. In the illustrated example, the joint structure 10 utilizes two connecting members 18 (18A, 18B) and four post-installed anchors 30 (30A to 30D).

2つの接続部材18のうち、一方の接続部材18Aは、既存構造物12と追加構造物14との接合部分16を跨ぐ態様で、既存構造物12と追加構造物14との双方に、図中上方から密着して配置されている。同様に、もう一方の接続部材18Bも、既存構造物12と追加構造物14との接合部分16を跨ぐ態様で、既存構造物12と追加構造物14との双方に、図中紙面手前側から密着して配置されている。又、本実施の形態では、接続部材18Aと既存構造物12との密着面20、及び、接続部材18Aと追加構造物14との密着面22が、同一平面上に位置すると共に、接続部材18Aが平板状をなしている。更に、図1には図示されていないが、接続部材18Bと既存構造物12との密着面、及び、接続部材18Bと追加構造物14との密着面もまた、同一平面上に位置しており、接続部材18Bが平板状をなしている。 One connection member 18A of the two connection members 18 is attached to both the existing structure 12 and the additional structure 14 in a manner straddling the joint portion 16 between the existing structure 12 and the additional structure 14. They are placed closely together from above. Similarly, the other connecting member 18B is also connected to both the existing structure 12 and the additional structure 14 from the front side of the paper surface in the figure in a manner straddling the joint portion 16 between the existing structure 12 and the additional structure 14. They are placed closely together. Further, in the present embodiment, the contact surface 20 between the connection member 18A and the existing structure 12 and the contact surface 22 between the connection member 18A and the additional structure 14 are positioned on the same plane, and the connection member 18A has a flat plate shape. Furthermore, although not shown in FIG. 1, the contact surface between the connection member 18B and the existing structure 12 and the contact surface between the connection member 18B and the additional structure 14 are also located on the same plane. , the connection member 18B is flat.

2つの接続部材18の各々は、上述したように配置された状態で、あと施工アンカー30によって固定されている。より詳しくは、一方の接続部材18Aには、図中上方から貫通されて、2つのあと施工アンカー30A、30Bが打込まれている。そのうちのあと施工アンカー30Aは、接続部材18Aを貫通して既存構造物12の内部まで打込まれ、あと施工アンカー30Bは、接続部材18Aを貫通して追加構造物14の内部まで打込まれている。同様に、もう一方の接続部材18Bには、図中紙面手前側から貫通されて、2つのあと施工アンカー30C、30Dが打込まれ、あと施工アンカー30Cは、接続部材18Bを貫通して既存構造物12の内部まで打込まれ、あと施工アンカー30Dは、接続部材18Bを貫通して追加構造物14の内部まで打込まれている。 Each of the two connecting members 18 is secured by a post-installed anchor 30 while being positioned as described above. More specifically, two post-installed anchors 30A and 30B are driven through one connecting member 18A from above in the drawing. Of these, the post-installed anchor 30A penetrates the connecting member 18A and is driven into the existing structure 12, and the post-installed anchor 30B penetrates the connecting member 18A and is driven into the additional structure 14. there is Similarly, two post-installed anchors 30C and 30D are driven through the other connecting member 18B from the front side of the paper surface in the figure, and the post-installed anchor 30C penetrates the connecting member 18B to the existing structure. The post-installed anchor 30D is driven into the inside of the object 12, and is driven into the additional structure 14 through the connection member 18B.

又、本実施の形態では、あと施工アンカー30A~30Dの各々にディスクアンカーが用いられている。ここでのディスクアンカーとは、ねじ切り加工等が施されたボルト部と、このボルト部と同軸上に配置されて円盤形をなすディスク部とを含み、ディスク部の円盤形の周囲に、ボルト部の先端側へ向かって突出したフランジが設けられたものである。更に、ディスクアンカーには、ボルト部とディスク部とが一体化された一体型ディスクアンカーや、ボルト部とディスク部とが別体の分離型ディスクアンカー等が含まれている。なお、本発明の実施の形態に係る接合構造10で用いられるあと施工アンカー30は、ディスクアンカーに限定されるものではなく、他の金属系アンカーや接着系アンカーであってもよい。 Further, in this embodiment, disc anchors are used for each of the post-installed anchors 30A to 30D. The disc anchor here includes a bolt portion that has undergone threading or the like, and a disc-shaped disc portion that is arranged coaxially with the bolt portion. is provided with a flange protruding toward the tip side of the. Furthermore, disc anchors include an integrated disc anchor in which a bolt portion and a disc portion are integrated, a separate disc anchor in which a bolt portion and a disc portion are separated, and the like. The post-installed anchors 30 used in the joint structure 10 according to the embodiment of the present invention are not limited to disc anchors, and may be other metal anchors or adhesive anchors.

上記のような構成により、接合構造10は、既存構造物12に対して、一方の接続部材18Aを固定しているあと施工アンカー30Aと、もう一方の接続部材18Bを固定しているあと施工アンカー30Cとが、互いに直交する2方向に向けて打込まれている。同様に、追加構造物14に対して、一方の接続部材18Aを固定しているあと施工アンカー30Bと、もう一方の接続部材18Bを固定しているあと施工アンカー30Dとが、互いに直交する2方向に向けて打込まれている。このようにして、接合構造10は、接続部材18の各々と、既存構造物12並びに追加構造物14とが接合されているものである。
With the above configuration, the joint structure 10 includes the post-installed anchor 30A that fixes one connection member 18A and the post-installation anchor that fixes the other connection member 18B to the existing structure 12. 30C are implanted in two directions perpendicular to each other. Similarly, with respect to the additional structure 14, the post-installed anchor 30B fixing one connecting member 18A and the post-installing anchor 30D fixing the other connecting member 18B are arranged in two directions perpendicular to each other. is driven towards. Thus, the joint structure 10 is formed by joining each of the connecting members 18 to the existing structure 12 and the additional structure 14 .

続いて、図2に示すフロー図の流れに沿って、上述したような構成の接続構造10を構築するための、本発明の実施の形態に係る接合工法について説明する。ここでは、図1に示した接続構造10を構築する場合を例にして説明することとし、接続構造10の構成については、適宜、図1を参照のこと。
S10(追加構造物配置):既存構造物12に対して接合するための適切な位置に、追加構造物14を配置する。例えば、図1の例では、既存構造物12及び追加構造物14の図中上側の面が同一平面上に位置し、かつ、既存構造物12及び追加構造物14の図中紙面手前側の面が同一平面上に位置するように、追加構造物14を配置する。このとき、追加構造物14を適切な位置に配置した状態で、追加構造物14の形状や大きさに応じた適切な器具を用いて追加構造物14を支持してもよく、又、接着剤等により既存構造物12に対して追加構造物14を仮固定してもよい。
Next, a joining method according to an embodiment of the present invention for constructing the connection structure 10 configured as described above will be described along the flow of the flow chart shown in FIG. Here, the case of constructing the connection structure 10 shown in FIG. 1 will be described as an example. For the configuration of the connection structure 10, refer to FIG. 1 as appropriate.
S10 (additional structure placement): The additional structure 14 is placed at an appropriate position for joining to the existing structure 12 . For example, in the example of FIG. 1, the surfaces of the existing structure 12 and the additional structure 14 on the upper side of the drawing are located on the same plane, and the surfaces of the existing structure 12 and the additional structure 14 on the front side of the drawing are The additional structure 14 is arranged so that the are located on the same plane. At this time, with the additional structure 14 placed in an appropriate position, the additional structure 14 may be supported using an appropriate tool according to the shape and size of the additional structure 14, or an adhesive may be used. For example, the additional structure 14 may be temporarily fixed to the existing structure 12 .

S20(接続部材配置):追加構造物14の接合に用いる接続部材18のうち、まだ固定していない接続部材18を配置する。ここでは、図1に示す平板状の接続部材18Aを、既存構造物12と追加構造物14との接合部分16を跨ぐ態様で、既存構造物12と追加構造物14との双方に、図1における上方から密着させて配置する。このとき、接続部材18Aと既存構造物12との密着面20、及び、接続部材18Aと追加構造物14との密着面22は、上記S10における追加構造物14の配置により、同一平面上に位置している。 S20 (arrangement of connection members): Of the connection members 18 used for joining the additional structure 14, the connection members 18 that have not yet been fixed are arranged. Here, a plate-shaped connection member 18A shown in FIG. are placed in close contact with each other from above. At this time, the contact surface 20 between the connection member 18A and the existing structure 12 and the contact surface 22 between the connection member 18A and the additional structure 14 are positioned on the same plane due to the placement of the additional structure 14 in S10. is doing.

S30(あと施工アンカー打込み):上記S20で配置した接続部材18に対して、あと施工アンカー30を打込む。具体的には、図1に示すように、接続部材18Aの、既存構造物12へ密着している部位(図中右側の部位)に対して、図中上方から、接続部材18Aを貫通して既存構造物12の内部まで、あと施工アンカー30Aを打込む。同様に、接続部材18Aの、追加構造物14へ密着している部位(図中左側の部位)に対して、図中上方から、接続部材18Aを貫通して追加構造物14の内部まで、あと施工アンカー30Bを打込む。 S30 (post-installed anchor driving): The post-installed anchor 30 is driven into the connection member 18 arranged in S20. Specifically, as shown in FIG. 1, a portion of the connection member 18A that is in close contact with the existing structure 12 (a portion on the right side in the drawing) is applied from above in the drawing through the connection member 18A. A post-construction anchor 30A is driven into the existing structure 12. - 特許庁Similarly, for the part of the connection member 18A that is in close contact with the additional structure 14 (the left part in the figure), from above in the figure, through the connection member 18A to the inside of the additional structure 14, Drive the construction anchor 30B.

ここで、あと施工アンカー30としてディスクアンカーを打込む場合について簡単に説明すると、まず、ドリル等によって、接続部材18Aの上から接続部材18Aを貫通して、ディスクアンカーのボルト部の長さに応じた適切な深さに、既存構造物12又は追加構造物14の内部を削孔する。続いて、削孔した孔内を清掃し、孔内に接着樹脂を注入した状態で、接続部材18Aの上からディスクアンカーのボルト部を挿入する。このとき、ディスクアンカーが一体型である場合は、ディスク部のフランジが接続部材18Aの上面に食い込むまで挿入し、ディスクアンカーが分離型である場合は、ボルト部の後端側からディスク部を挿通して、ディスク部のフランジを接続部材18Aの上面に食い込ませる。更に、何れの場合であっても、接続部材18Aの、ディスクアンカーのディスク部のフランジが食い込んだ円環状の溝内に、接着樹脂を注入する。そして、ディスクアンカーが分離型の場合は、ボルト部の後端側からナットを締め付けて固定する。このようにして、ディスクアンカーの打込みを行うものである。 Here, a case of driving a disc anchor as the post-installed anchor 30 will be briefly described. Drill the interior of the existing structure 12 or additional structure 14 to the appropriate depth. Subsequently, the inside of the drilled hole is cleaned, and the bolt portion of the disc anchor is inserted from above the connection member 18A in a state in which the adhesive resin is injected into the hole. At this time, if the disc anchor is an integral type, insert it until the flange of the disc portion bites into the upper surface of the connecting member 18A. If the disc anchor is a separate type, insert the disc portion from the rear end side of the bolt portion. Then, the flange of the disk portion is made to bite into the upper surface of the connecting member 18A. Furthermore, in either case, the adhesive resin is injected into the annular groove of the connecting member 18A into which the flange of the disk portion of the disk anchor is bitten. If the disc anchor is a separate type, the nut is tightened from the rear end side of the bolt portion to fix it. In this way, the disc anchor is driven.

S40(接続部材判定):追加構造物14の接合に用いる接続部材18を、あと施工アンカー30により全て固定したか否かを判定する。その結果、固定していない接続部材18がまだ残っている(例えば接続部材18B)と判定した場合(NO)は、その接続部材18を固定するために、上記S20へと復帰する。すなわち、追加構造物14の接合に用いる全ての接続部材18を固定するまで、上記S20~S40を繰り返し実行する。他方、接続部材18を全て固定したと判定した場合(YES)は、本発明の実施の形態に係る接合工法が終了となる。
なお、本発明の実施の形態に係る接合工法は、図2の構成に限定されるものではなく、作業ステップの一部が変更、追加、削除されたものであってもよい。
S40 (connection member determination): It is determined whether or not all of the connection members 18 used for joining the additional structure 14 have been fixed by the post-installed anchors 30 . As a result, if it is determined that there is still a connecting member 18 that has not been fixed (for example, the connecting member 18B) (NO), the process returns to S20 to fix the connecting member 18. FIG. That is, the above S20 to S40 are repeatedly executed until all the connection members 18 used for joining the additional structure 14 are fixed. On the other hand, if it is determined that all the connection members 18 are fixed (YES), the joining construction method according to the embodiment of the present invention ends.
In addition, the joining method according to the embodiment of the present invention is not limited to the configuration shown in FIG. 2, and part of the work steps may be changed, added, or deleted.

又、本発明の実施の形態に係る接合構造10及び接合工法は、図1の例に限定されるものではなく、例えば、既存構造物12に対して追加構造物14を接合するために、1つのみの接続部材18を用いてもよく、3つ以上の接続部材18を用いてもよい。複数の接続部材18を用いる場合、既存構造物12及び追加構造物14の共通する面上(例えば図1における上側の面上)に、各々が既存構造物12と追加構造物14との接合部分16を跨ぐ態様で、複数の接合部材18が並べられて配置されていてもよい。加えて、3つ以上の異なる方向から、既存構造物12及び追加構造物14の双方に密着するように、3つ以上の接続部材18を固定してもよい。この場合は、既存構造物12と追加構造物14との各々に対し、互いに異なる3つ以上の方向に向けて、あと施工アンカー30が打込まれることになる。 Also, the joining structure 10 and the joining method according to the embodiment of the present invention are not limited to the example of FIG. Only one connection member 18 may be used, or three or more connection members 18 may be used. When a plurality of connection members 18 are used, each joint portion between the existing structure 12 and the additional structure 14 is provided on the common surface of the existing structure 12 and the additional structure 14 (for example, on the upper surface in FIG. 1). A plurality of joint members 18 may be arranged side by side in a manner straddling 16 . In addition, three or more connection members 18 may be secured to both the existing structure 12 and the additional structure 14 from three or more different directions. In this case, the post-installed anchors 30 are driven into each of the existing structure 12 and the additional structure 14 in three or more different directions.

更に、既存構造物12及び追加構造物14の双方に密着するものであれば、接続部材18の形状や大きさも任意であり、平板状に限定されるものではない。例えば、接続部材18と既存構造物12との密着面20、及び、接続部材18と追加構造物14との密着面22が、同一平面上ではなく段差を介して位置している場合は、接続部材18がその段差に対応する形状を有していてもよい。又、あと施工アンカー30も、接続部材18毎に、既存構造物12と追加構造物14との各々に打込まれるものが含まれていれば、その数量は任意であり、例えば、1つの接続部材18に対して3つ以上のあと施工アンカー30が打込まれてもよい。 Furthermore, the connecting member 18 may have any shape and size as long as it is in close contact with both the existing structure 12 and the additional structure 14, and is not limited to a flat plate shape. For example, when the contact surface 20 between the connection member 18 and the existing structure 12 and the contact surface 22 between the connection member 18 and the additional structure 14 are not on the same plane but are located across a step, the connection The member 18 may have a shape corresponding to the step. Also, the number of post-installed anchors 30 is arbitrary as long as each connection member 18 includes those driven into each of the existing structure 12 and the additional structure 14. For example, one connection More than two post-installed anchors 30 may be driven into member 18 .

さて、上記構成をなす本発明の実施の形態によれば、次のような作用効果を得ることが可能である。すなわち、本発明の実施の形態に係る接合工法は、例えば図1に示すような接合構造10を、図2に示すような流れに沿って構築するものであり、まず、既存構造物12と追加構造物14との接合部分16を跨ぐ態様で、既存構造物12と追加構造物14との双方に密着する接続部材18を配置する(図2のS20)。すなわち、既存構造物12に対して追加構造物14を接合するための、既存構造物12と追加構造物14とが接触する適切な位置に追加構造物14を配置し(図2のS10)、この状態で、既存構造物12と追加構造物14との接合部分(接触部分)16を跨ぐように接続部材18を配置する。このとき、接続部材18は、少なくとも、既存構造物12に対する追加構造物14の接合方向と平行な方向(図1における左右方向)に延在するように配置される。更に、接続部材18には、前記のように配置された状態で、既存構造物12と追加構造物14との双方に密着する形状及び大きさを備えるものを使用する。 Now, according to the embodiment of the present invention having the above configuration, it is possible to obtain the following effects. That is, in the joining method according to the embodiment of the present invention, for example, a joining structure 10 as shown in FIG. 1 is constructed along the flow as shown in FIG. A connection member 18 is placed in close contact with both the existing structure 12 and the additional structure 14 so as to straddle the joint portion 16 with the structure 14 (S20 in FIG. 2). That is, in order to join the additional structure 14 to the existing structure 12, the additional structure 14 is arranged at an appropriate position where the existing structure 12 and the additional structure 14 are in contact (S10 in FIG. 2), In this state, a connection member 18 is arranged so as to straddle a joint portion (contact portion) 16 between the existing structure 12 and the additional structure 14 . At this time, the connection member 18 is arranged so as to extend at least in a direction parallel to the joining direction of the additional structure 14 to the existing structure 12 (horizontal direction in FIG. 1). Further, the connecting member 18 is of a shape and size that closely contacts both the existing structure 12 and the additional structure 14 when arranged as described above.

そして、上記のように配置した接続部材18を貫通して、この接続部材18と、既存構造物12並びに追加構造物14との各々に、あと施工アンカー30を打込む(図2のS30)。具体的には、既存構造物12に対する追加構造物14の接合方向と平行な方向に延在している接続部材18の、既存構造物12に密着している部位に対し、既存構造物12に対する追加構造物14の接合方向(図1における左右方向)に対して略直交する方向から、あと施工アンカー30を打込み、この際、接続部材18を貫通して既存構造物12の内部まで打込む。同様に、接続部材18の、追加構造物14に密着している部位に対し、既存構造物12に対する追加構造物14の接合方向に対して略直交する方向から、あと施工アンカー30を打込み、この際、接続部材18を貫通して追加構造物14の内部まで打込む。これにより、接続部材18と、既存構造物12並びに追加構造物14とを接合するものである。 Then, through the connecting member 18 arranged as described above, the post-installed anchor 30 is driven into each of the connecting member 18, the existing structure 12 and the additional structure 14 (S30 in FIG. 2). Specifically, the portion of the connection member 18 extending in the direction parallel to the joining direction of the additional structure 14 to the existing structure 12, which is in close contact with the existing structure 12, is attached to the existing structure 12. A post-installed anchor 30 is driven in from a direction substantially perpendicular to the joining direction of the additional structure 14 (horizontal direction in FIG. 1), and at this time, is driven into the existing structure 12 through the connection member 18 . Similarly, a post-installed anchor 30 is driven into a portion of the connection member 18 that is in close contact with the additional structure 14 from a direction substantially orthogonal to the joining direction of the additional structure 14 to the existing structure 12, and this At this time, the connection member 18 is penetrated and driven to the inside of the additional structure 14 . Thereby, the connection member 18, the existing structure 12, and the additional structure 14 are joined.

本発明の実施の形態に係る接合工法は、上述したようにあと施工アンカー30を使用することで、既存構造物12に対する追加構造物14の接合方向と平行な方向に作用する引張力を、既存構造物12に対する追加構造物14の接合方向と略直交する方向に打込まれたあと施工アンカー30により、せん断力として処理することができる。すなわち、既存構造物12と追加構造物14との各々に打込まれたあと施工アンカー30には、それらの打込み方向と略直交する方向の引張力が作用するため、その引張力を所謂ダウエル効果によって処理するものである。これにより、既存構造物12に対する追加構造物14の接合を、あと施工アンカー30を使用して実現することができるため、例えば既存構造物12を貫通して貫通型のアンカーを取り付ける場合と比較して、既存構造物12の室内からの作業が不要となる等、施工内容が容易なものとなり、コスト及び工期を抑制することが可能となる。加えて、引張力が作用するような追加構造物14を既存構造物12に対して接合しながらも、あと施工アンカー30により引張力をせん断力として処理しているため、耐力的にも何ら問題はなく、十分な信頼性及び安全性を確保することができる。 In the joining method according to the embodiment of the present invention, by using the post-installed anchor 30 as described above, the tensile force acting in the direction parallel to the joining direction of the additional structure 14 to the existing structure 12 is reduced to the existing structure. It can be treated as a shear force by the post-installed anchor 30 driven in a direction substantially orthogonal to the joining direction of the additional structure 14 to the structure 12 . That is, the post-installed anchors 30 that are driven into the existing structure 12 and the additional structure 14 are subjected to a tensile force in a direction substantially perpendicular to the driving direction. is processed by As a result, the additional structure 14 can be joined to the existing structure 12 by using the post-installed anchors 30, so compared to the case where a penetrating anchor is attached by penetrating the existing structure 12, for example. As a result, it becomes possible to simplify the construction work, such as eliminating the need for work inside the existing structure 12, and to reduce the cost and construction period. In addition, while the additional structure 14 on which a tensile force acts is joined to the existing structure 12, the tensile force is treated as a shear force by the post-installed anchor 30, so there is no problem in terms of strength. sufficient reliability and safety can be ensured.

更に、本発明の実施の形態に係る接合工法は、既存構造物12に対して接合するための位置に追加構造物14を配置する際に、既存構造物12の任意の面と追加構造物14の任意の面とが同一平面上に位置するように、追加構造物14を配置する。更に、接続部材18として平板状の接続部材18を用い、同一平面上に位置する既存構造物12の面と追加構造物14の面との双方に密着させて配置するものである。このため、あと施工アンカー30を、接続部材18の、既存構造物12並びに追加構造物14との密着面20、22とは反対の面から、それらの面と略直交する方向へ向けて打込むことになる。これにより、既存構造物12への密着面と追加構造物14への密着面との間に段差がある接続部材18や、肉厚の接続部材18等を用いる場合と比較して、あと施工アンカー30の打込みが容易になり、コストや工期を更に抑制することが可能となる。 Furthermore, according to the joining method according to the embodiment of the present invention, when arranging the additional structure 14 at a position for joining to the existing structure 12, any surface of the existing structure 12 and the additional structure 14 The additional structure 14 is arranged so as to be coplanar with any surface of . Furthermore, a plate-like connecting member 18 is used as the connecting member 18, and is arranged in close contact with both the surface of the existing structure 12 and the surface of the additional structure 14 located on the same plane. For this reason, the post-installed anchor 30 is driven in from the surface of the connecting member 18 opposite to the adhesion surface 20, 22 with the existing structure 12 and the additional structure 14 in a direction substantially orthogonal to those surfaces. It will be. As a result, compared to the case of using the connection member 18 having a step between the adhesion surface to the existing structure 12 and the adhesion surface to the additional structure 14, the thick connection member 18, etc., the post-installation anchor The implantation of 30 becomes easy, and it becomes possible to further suppress the cost and construction period.

又、本発明の実施の形態に係る接合工法は、既存構造物12と追加構造物14との各々に対し、少なくとも互いに直交する2方向に向けてあと施工アンカー30が打込まれるように、接続部材18を複数固定するものである。例えば、図1に示すように、1つの接続部材18Aを、既存構造物12及び追加構造物14に対して上方から密着させて配置し、上方から既存構造物12及び追加構造物14の各々へ向けてあと施工アンカー30A、30Bを打込んで固定した場合は、更に別の接続部材18Bを、既存構造物12及び追加構造物14に対して側方(図中紙面手前方向)から密着させて配置する。そして、その接続部材18Bを、側方から既存構造物12及び追加構造物14の各々へ向けてあと施工アンカー30C、30Dを打込んで固定することで、これらのあと施工アンカー30C、30Dと、初めに固定した接続部材18Aに打込まれたあと施工アンカー30A、30Bとが、既存構造物12及び追加構造物14に対して互いに直交する2方向に向けて打込まれた状態になる。このように、少なくとも互いに直交する2方向に向けて、あと施工アンカー30を打込むことにより、追加構造物14がズレたり回転したりすることなく、強固に接合することができる。 In addition, in the joining method according to the embodiment of the present invention, the post-installed anchors 30 are driven in at least two directions orthogonal to each other to the existing structure 12 and the additional structure 14. A plurality of members 18 are fixed. For example, as shown in FIG. 1, one connection member 18A is placed in close contact with the existing structure 12 and additional structure 14 from above, and connected to each of the existing structure 12 and additional structure 14 from above. When the post-implementation anchors 30A and 30B are driven in and fixed, another connection member 18B is brought into close contact with the existing structure 12 and the additional structure 14 from the side (front side of the paper surface in the figure). Deploy. Then, the connecting member 18B is fixed by driving the post-installed anchors 30C and 30D toward the existing structure 12 and the additional structure 14 from the side to fix the post-installed anchors 30C and 30D, The anchors 30A and 30B are driven into the existing structure 12 and the additional structure 14 in two directions perpendicular to each other after being driven into the fixed connecting member 18A. By driving the post-installed anchors 30 in at least two directions orthogonal to each other in this manner, the additional structure 14 can be firmly joined without shifting or rotating.

しかも、本発明の実施の形態に係る接合工法は、あと施工アンカー30として、一般的なあと施工アンカー30よりも剛性が高いディスクアンカーを使用することとすれば、せん断力に対する耐性が非常に高まるため、信頼性及び安全性を向上することができると共に、打込み本数を低減して工期をより一層抑制することが可能となる。 Moreover, in the joining method according to the embodiment of the present invention, if the post-installed anchor 30 is a disc anchor having higher rigidity than the general post-installed anchor 30, the resistance to shearing force is greatly increased. Therefore, the reliability and safety can be improved, and the number of driven parts can be reduced to further reduce the construction period.

なお、本発明の実施の形態に係る接合構造10及び接合工法が対象とする既存構造物12は、鉄筋コンクリートを含むコンクリート造の構造物であれば、例えば、マンション等の居住用の構造物、学校等の公共施設、テナントが入居するビルや商業施設等を含み、特に限定されるものではない。又、本発明の実施の形態に係る接合構造10及び接合工法が対象とする追加構造物14は、接続部材18を介してあと施工アンカー30を打込むことができる構成のものであれば、例えば、庇、非常階段、耐震改修用の追加部材等を含み、特に限定されるものではない。一例として、鉄筋コンクリート造のマンションに非常階段を後付けするために、本発明の実施の形態に係る接合構造10及び接合工法を適用する場合、マンションの廊下を構成するスラブ部分(既存構造物12)に対して、非常階段を構成するステップ(追加構造物14)を接合するイメージになる。これにより、外部柱や杭を用いることなく、非常階段等の追加構造物14を後付けすることができる。 In addition, the existing structure 12 to which the joint structure 10 and the joint construction method according to the embodiment of the present invention are applied is a concrete structure including reinforced concrete. It is not particularly limited, including public facilities such as, buildings and commercial facilities where tenants reside. Further, if the additional structure 14 targeted by the joint structure 10 and the joint construction method according to the embodiment of the present invention has a structure in which the post-installed anchor 30 can be driven in via the connection member 18, for example , eaves, fire escapes, additional members for seismic retrofitting, etc., but not limited to. As an example, when applying the joint structure 10 and the joint construction method according to the embodiment of the present invention in order to retrofit an emergency staircase to a reinforced concrete condominium, the slab portion (existing structure 12) constituting the corridor of the condominium On the other hand, it becomes an image of joining the steps (additional structure 14) that constitute the emergency stairs. As a result, an additional structure 14 such as an emergency staircase can be retrofitted without using external pillars or piles.

10:接合構造、12:既存構造物、14:追加構造物、16:接合部分、18(18A、18B):接続部材、20:接続部材と既存構造物との密着面、22:接続部材と追加構造物との密着面、30(30A~30D):あと施工アンカー 10: Joint structure, 12: Existing structure, 14: Additional structure, 16: Joint part, 18 (18A, 18B): Connection member, 20: Adhesive surface between connection member and existing structure, 22: Connection member and Adhesion surface with additional structure, 30 (30A to 30D): post-construction anchor

Claims (6)

コンクリート造の既存構造物に対し、別体の追加構造物を接合する接合工法であって、
前記既存構造物と前記追加構造物との接合部分を跨ぐ態様で、前記既存構造物と前記追加構造物との双方に密着する接続部材を配置し、
該接続部材を貫通して、該接続部材と、前記既存構造物並びに前記追加構造物との各々にあと施工アンカーを打込み、前記接続部材と、前記既存構造物並びに前記追加構造物とを接合し、
前記既存構造物と前記追加構造物との各々に対し、少なくとも互いに直交する2方向に向けて前記あと施工アンカーが打込まれるように、前記接続部材を複数固定することを特徴とする接合工法。
A joining method for joining a separate additional structure to an existing concrete structure,
arranging a connection member in close contact with both the existing structure and the additional structure in a manner straddling the joint portion between the existing structure and the additional structure;
A post-installed anchor is driven through the connecting member and into each of the connecting member, the existing structure, and the additional structure to join the connecting member, the existing structure, and the additional structure. ,
A joining method , wherein a plurality of the connecting members are fixed to each of the existing structure and the additional structure so that the post-installed anchors are driven in at least two directions perpendicular to each other .
前記接続部材と、前記既存構造物並びに前記追加構造物との密着面を同一平面上に位置させ、平板状をなす前記接続部材を用いることを特徴とする請求項1記載の接合工法。 2. The joining method according to claim 1, wherein said connecting member is used so that the contact surfaces of said connecting member and said existing structure and said additional structure are positioned on the same plane, and said connecting member having a flat plate shape is used. 前記あと施工アンカーとして、ディスクアンカーを使用することを特徴とする請求項1又は2記載の接合工法。 3. The joining method according to claim 1, wherein a disc anchor is used as said post-installed anchor. コンクリート造の既存構造物に対し、別体の追加構造物が接合された接合構造であって、
前記既存構造物と前記追加構造物との接合部分を跨ぐ態様で、前記既存構造物と前記追加構造物との双方に密着して配置された接続部材が貫通されて、該接続部材と、前記既存構造物並びに前記追加構造物との各々にあと施工アンカーが打込まれ、前記接続部材と、前記既存構造物並びに前記追加構造物とが接合されており、
前記接続部材が複数固定され、該複数の接続部材を固定している複数の前記あと施工アンカーに、前記既存構造物と前記追加構造物との各々に対し、少なくとも互いに直交する2方向に向けて打込まれたあと施工アンカーが含まれていることを特徴とする接合構造。
A joint structure in which a separate additional structure is joined to an existing concrete structure,
A connection member arranged in close contact with both the existing structure and the additional structure in a manner straddling the joint portion between the existing structure and the additional structure penetrates the connection member and the additional structure. A post-installed anchor is driven into each of the existing structure and the additional structure, and the connecting member is joined to the existing structure and the additional structure ,
A plurality of the connection members are fixed, and the plurality of post-installed anchors fixing the plurality of connection members are directed toward at least two directions perpendicular to each other with respect to each of the existing structure and the additional structure. A joint structure comprising a post- installed anchor .
前記接続部材と、前記既存構造物並びに前記追加構造物との密着面は同一平面上に位置し、前記接続部材が平板状をなしていることを特徴とする請求項記載の接合構造。 5. The joining structure according to claim 4 , wherein the contact surfaces of said connecting member and said existing structure and said additional structure are positioned on the same plane, and said connecting member is flat plate-shaped. 前記あと施工アンカーとして、ディスクアンカーが使用されていることを特徴とする請求項4又は5記載の接合構造。 6. The joining structure according to claim 4 , wherein a disc anchor is used as said post-installed anchor.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001207653A (en) 2000-01-26 2001-08-03 Shimizu Corp Mounting structure of reinforcing wall for existing building
JP2008267136A (en) 2008-05-12 2008-11-06 Hitoshi Shiobara Shearing resistance type anchoring disk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001207653A (en) 2000-01-26 2001-08-03 Shimizu Corp Mounting structure of reinforcing wall for existing building
JP2008267136A (en) 2008-05-12 2008-11-06 Hitoshi Shiobara Shearing resistance type anchoring disk

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