JP6989941B2

JP6989941B2 - Crack repair jig and crack repair method

Info

Publication number: JP6989941B2
Application number: JP2017144106A
Authority: JP
Inventors: 卓明金田; 直記外山; 謙吾石井
Original assignee: Hinode Ltd
Current assignee: Hinode Ltd
Priority date: 2017-07-26
Filing date: 2017-07-26
Publication date: 2022-01-12
Anticipated expiration: 2037-07-26
Also published as: JP2019027035A

Description

本発明は、構造物の金属製コーナー部に発生した亀裂を補修する際に用いる亀裂補修用治具およびこの亀裂補修用治具を用いる亀裂補修方法に関する。 The present invention relates to a crack repairing jig used for repairing a crack generated in a metal corner portion of a structure, and a crack repairing method using the crack repairing jig.

特許文献１には、鋼構造物を構成する板材に発生した疲労亀裂に対してストップホールを形成し、スプライスプレートを用いる補修工法が開示されている。 Patent Document 1 discloses a repair method in which a stop hole is formed for fatigue cracks generated in a plate material constituting a steel structure and a splice plate is used.

特開２００４－１７６２５４号公報Japanese Unexamined Patent Publication No. 2004-176254

本発明は、鋼構造物等に発生した亀裂に対して有効な亀裂補修用治具および亀裂補修方法を提供する。 The present invention provides a crack repairing jig and a crack repairing method that are effective against cracks generated in steel structures and the like.

本発明の一態様は、構造物の金属製コーナー部に発生した亀裂に対して交差する方向に補修部材を挿入するために用いられる亀裂補修用治具である。
この亀裂補修用治具は、金属製コーナー部の頂部を挟む２面に各々接触する一組の接触面と、一組の接触面を繋ぐとともに一組の接触面を２面に各々接触させた接触状態で頂部に対して離隔して配置される離隔面と、接触状態で金属製コーナー部に補修部材を挿入する開口部をドリルにより形成するためにドリルをガイドする少なくとも１つのドリルガイド孔とを有する。 One aspect of the present invention is a crack repair jig used for inserting a repair member in a direction intersecting a crack generated in a metal corner portion of a structure.
In this crack repair jig, a set of contact surfaces that are in contact with each of the two surfaces sandwiching the top of the metal corner and a set of contact surfaces are connected and a set of contact surfaces are brought into contact with each of the two surfaces. A separation surface that is spaced apart from the top in contact and at least one drill guide hole that guides the drill to form an opening in the metal corner for inserting the repair member in contact. Have.

この亀裂補修用治具を用いることにより、金属製コーナー部の頂部と干渉することなく、金属製コーナー部の頂部を挟む２面に亀裂補修用治具の一組の接触面が各々接触し、安定した状態で開口部をドリルにより形成するので、金属製コーナー部に補修部材を挿入するための開口部を簡単かつ正確に形成することができる。 By using this crack repair jig, a set of contact surfaces of the crack repair jig come into contact with each of the two surfaces sandwiching the top of the metal corner without interfering with the top of the metal corner. Since the opening is formed by a drill in a stable state, the opening for inserting the repair member into the metal corner can be easily and accurately formed.

この亀裂補修用治具において少なくとも１つのドリルガイド孔は、一組の接触面の少なくとも一つを貫通するドリルガイド孔とすることができる。これにより、亀裂補修用治具を大きくすることなく、補修部材を挿入するための開口部を大きく形成できるため、大きな補修部材によって亀裂補修の強度を高めることができる。 In this crack repair jig, at least one drill guide hole can be a drill guide hole penetrating at least one of a set of contact surfaces. As a result, it is possible to form a large opening for inserting the repair member without increasing the size of the crack repair jig, so that the strength of the crack repair can be increased by the large repair member.

この亀裂補修用治具において一組の接触面が成す内角角度は１８０度未満であってもよい。この場合、離隔面を簡易な形状にすることができ、亀裂補修用治具の製造コストの低減につながる。 In this crack repair jig, the internal angle formed by a set of contact surfaces may be less than 180 degrees. In this case, the separation surface can be made into a simple shape, which leads to a reduction in the manufacturing cost of the crack repair jig.

この亀裂補修用治具において一組の接触面の各々は平面とすることができる。これにより、一組の接触面の加工が容易となり、亀裂補修用治具の製造コストの低減につながる。 In this crack repair jig, each of the contact surfaces of the set can be flat. This facilitates the processing of a set of contact surfaces, leading to a reduction in the manufacturing cost of the crack repair jig.

本発明の他の態様は、亀裂補修用治具を用いて構造物の金属製コーナー部に発生した亀裂に対して交差する方向に補修部材を挿入する亀裂補修方法である。
亀裂補修用治具は、金属製コーナー部の頂部を挟む２面に各々接触する一組の接触面と、一組の接触面を繋ぐとともに一組の接触面を２面に各々接触させた接触状態で頂部に対して離隔して配置される離隔面と、接触状態で金属製コーナー部に補修部材を挿入する開口部をドリルにより形成するためにドリルをガイドする少なくとも１つのドリルガイド孔とを含み、
当該亀裂補修方法は、一組の接触面が２面に各々接触するように亀裂補修用治具を設置する工程と、設置する工程の後に、少なくとも１つのドリルガイド孔を介してドリルにより開口部を形成する工程とを含む。 Another aspect of the present invention is a crack repair method in which a repair member is inserted in a direction intersecting a crack generated in a metal corner portion of a structure by using a crack repair jig.
The crack repair jig is a contact in which a set of contact surfaces that are in contact with each of the two surfaces sandwiching the top of the metal corner and a set of contact surfaces are connected and a set of contact surfaces are brought into contact with each other. A separation surface that is spaced apart from the top in the state and at least one drill guide hole that guides the drill to form an opening for inserting the repair member into the metal corner in contact. Including,
The crack repair method includes a step of installing a crack repair jig so that a set of contact surfaces are in contact with each of the two surfaces, and a step of installing the crack, after which an opening is drilled through at least one drill guide hole. Including the step of forming.

この亀裂補修方法では、金属製コーナー部の頂部と干渉することなく、金属製コーナー部の頂部を挟む２面に亀裂補修用治具の一組の接触面が各々接触し、安定した状態で開口部をドリルにより形成するので、金属製コーナー部に補修部材を挿入するための開口部を簡単かつ正確に形成することができる。 In this crack repair method, a set of contact surfaces of a crack repair jig are in contact with each of the two surfaces sandwiching the top of the metal corner without interfering with the top of the metal corner, and the opening is stable. Since the portion is formed by a drill, it is possible to easily and accurately form an opening for inserting the repair member into the metal corner portion.

この亀裂補修方法において亀裂は頂部の延びる方向に沿っていてもよい。この場合、亀裂に対して交差する方向に補修部材を挿入するために金属製コーナー部の頂部を挟む２面に対してドリルの先端を斜めにあてて削孔する必要が生じるが、ドリルガイド孔によってドリルの先端が逃げないようにガイドされるため、金属製コーナー部に補修部材を挿入するための開口部を正確に形成することができる。 In this crack repair method, the crack may be along the extending direction of the apex. In this case, in order to insert the repair member in the direction intersecting the crack, it is necessary to drill the drill guide hole by diagonally applying the tip of the drill to the two surfaces sandwiching the top of the metal corner. Since the tip of the drill is guided so as not to escape, an opening for inserting the repair member can be accurately formed in the metal corner portion.

この亀裂補修方法において２面が頂部を挟む角度は１８０度未満であってもよい。この場合、離隔面を簡易な形状にすることができ、亀裂補修用治具の製造コストの低減につながる。 In this crack repair method, the angle at which the two surfaces sandwich the top may be less than 180 degrees. In this case, the separation surface can be made into a simple shape, which leads to a reduction in the manufacturing cost of the crack repair jig.

本発明によれば、構造物の金属製コーナー部に発生した亀裂の補修に有効な亀裂補修用治具および亀裂補修方法を提供できる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a crack repairing jig and a crack repairing method effective for repairing a crack generated in a metal corner portion of a structure.

本発明の一実施形態である亀裂補修用治具を示す図。The figure which shows the crack repair jig which is one Embodiment of this invention. 図１の亀裂補修用治具を用いた亀裂補修方法を示す図。The figure which shows the crack repair method using the crack repair jig of FIG. 図２の亀裂補修方法で用いる補修部材を示す図。The figure which shows the repair member used in the crack repair method of FIG. 本発明の他の実施形態である亀裂補修用治具を用いた亀裂補修方法を示す図。The figure which shows the crack repair method using the crack repair jig which is another embodiment of this invention. 図１の亀裂補修用治具を金属製コーナー部に設置した状態を概念的に示す図。The figure which conceptually shows the state which installed the crack repair jig of FIG. 1 in a metal corner part. 本発明の他の実施形態である亀裂補修用治具を金属製コーナー部に設置した状態を概念的に示す図。The figure which conceptually shows the state in which the crack repair jig which is another embodiment of this invention is installed in the metal corner part.

図１に本発明の一実施形態である亀裂補修用治具１０を示している。また、図２にはこの亀裂補修用治具１０を用いた亀裂補修方法を示し、図３には図２の亀裂補修方法で用いる補修部材２０を示している。さらに、図５にはこの亀裂補修用治具１０を金属製コーナー部３１に設置した状態を概念的に示している。 FIG. 1 shows a crack repair jig 10 which is an embodiment of the present invention. Further, FIG. 2 shows a crack repair method using the crack repair jig 10, and FIG. 3 shows a repair member 20 used in the crack repair method of FIG. 2. Further, FIG. 5 conceptually shows a state in which the crack repair jig 10 is installed in the metal corner portion 31.

この実施形態において、この亀裂補修用治具１０は、図２に示しているように構造物３０の金属製コーナー部３１に発生した亀裂３２に対して交差する方向に補修部材２０を挿入するために用いられるもので、金属製コーナー部３１の頂部３１ａを挟む２面３１ｂ，３１ｃに各々接触する一組の接触面１１ａ，１１ｂと、一組の接触面１１ａ，１１ｂを繋ぐとともに一組の接触面１１ａ，１１ｂを２面３１ｂ，３１ｃに各々接触させた接触状態で頂部３１ａに対して離隔して配置される離隔面１２と、この接触状態で金属製コーナー部３１に補修部材２０を挿入する開口部３３をドリル（図示省略）により形成するためにそのドリルをガイドするドリルガイド孔１３を一直線状に５つ有している。 In this embodiment, the crack repair jig 10 inserts the repair member 20 in a direction intersecting the crack 32 generated in the metal corner portion 31 of the structure 30 as shown in FIG. A set of contact surfaces 11a and 11b that are in contact with the two surfaces 31b and 31c that sandwich the top 31a of the metal corner portion 31 and a set of contact surfaces 11a and 11b are connected to each other and a set of contacts. The repair member 20 is inserted into the separated surface 12 which is arranged so as to be separated from the top portion 31a in the contact state where the surfaces 11a and 11b are in contact with the two surfaces 31b and 31c, respectively, and the metal corner portion 31 in this contact state. In order to form the opening 33 by a drill (not shown), it has five drill guide holes 13 for guiding the drill in a straight line.

この実施形態において、金属製コーナー部３１の２面３１ｂ，３１ｃが頂部３１ａを挟む角度は１１０度であり、これに合わせて亀裂補修用治具１０の一組の接触面１１ａ，１１ｂが成す内角角度θ（図５参照）も１１０度である。また、この実施形態において、金属製コーナー部３１の２面３１ｂ，３１ｃの各々は平面であり、これに合わせて亀裂補修用治具１０の一組の接触面１１ａ，１１ｂの各々も平面である。これにより、亀裂補修用治具１０の一組の接触面１１ａ，１１ｂは、金属製コーナー部３１の２面３１ｂ，３１ｃに各々面接触可能となっている。なお、金属製コーナー部３１の２面３１ｂ，３１ｃが曲面の場合、それに合わせて亀裂補修用治具１０の一組の接触面１１ａ，１１ｂも曲面にすることで、これらを面接触させることもできる。 In this embodiment, the angle between the two surfaces 31b and 31c of the metal corner portion 31 sandwiching the top portion 31a is 110 degrees, and the internal angle formed by the contact surfaces 11a and 11b of the set of crack repair jigs 10 is adjusted to this angle. The angle θ (see FIG. 5) is also 110 degrees. Further, in this embodiment, each of the two surfaces 31b and 31c of the metal corner portion 31 is a flat surface, and each of the contact surfaces 11a and 11b of the set of the crack repair jig 10 is also a flat surface. .. As a result, the contact surfaces 11a and 11b of the set of the crack repair jig 10 can be surface-contacted with the two surfaces 31b and 31c of the metal corner portion 31, respectively. When the two surfaces 31b and 31c of the metal corner portion 31 are curved surfaces, the contact surfaces 11a and 11b of the set of the crack repair jig 10 may also be curved surfaces to bring them into surface contact. can.

図１に明確に表れているように、この亀裂補修用治具１０において５つのドリルガイド孔１３は一直線状に連続的に配列されており、これら５つのドリルガイド孔１３のうち両端の２つのドリルガイド孔１３は、各々一組の接触面１１ａ，１１ｂを貫通している。 As clearly shown in FIG. 1, in the crack repair jig 10, the five drill guide holes 13 are continuously arranged in a straight line, and two of the five drill guide holes 13 at both ends. The drill guide hole 13 penetrates a set of contact surfaces 11a and 11b, respectively.

次に、この亀裂補修用治具１０を用いた亀裂補修方法について説明する。 Next, a crack repair method using the crack repair jig 10 will be described.

まず、図２（ａ）に示しているように、亀裂補修用治具１０の一組の接触面１１ａ，１１ｂが金属製コーナー部３１の２面３１ｂ，３１ｃに各々接触するように亀裂補修用治具１０を設置する。この実施形態において亀裂３２は金属製コーナー部３１の頂部３１ａの延びる方向に沿っているので、亀裂補修用治具１０はこの亀裂３２に対して交差する方向に５つのドリルガイド孔１３が並ぶように設置する。このように亀裂補修用治具１０の一組の接触面１１ａ，１１ｂを金属製コーナー部３１の２面３１ｂ，３１ｃに各々接触させた接触状態では、図５に明確に表れているように、一組の接触面１１ａ，１１ｂを繋ぐ離隔面１２は金属製コーナー部３１の頂部３１ａに対して離隔して配置され、金属製コーナー部３１の頂部３１ａと干渉することはない。 First, as shown in FIG. 2A, for crack repair so that a set of contact surfaces 11a and 11b of the crack repair jig 10 come into contact with the two surfaces 31b and 31c of the metal corner portion 31, respectively. Install the jig 10. In this embodiment, since the crack 32 is along the extending direction of the top portion 31a of the metal corner portion 31, the crack repair jig 10 has five drill guide holes 13 arranged in a direction intersecting the crack 32. Install in. As described above, in the contact state in which the contact surfaces 11a and 11b of the set of the crack repair jig 10 are brought into contact with the two surfaces 31b and 31c of the metal corner portion 31, respectively, as clearly shown in FIG. The separation surface 12 connecting the set of contact surfaces 11a and 11b is arranged apart from the top portion 31a of the metal corner portion 31 and does not interfere with the top portion 31a of the metal corner portion 31.

続いてこの接触状態を維持しつつ、５つのドリルガイド孔１３を介してドリル（図示省略）により開口部３３（図２（ｂ）参照）を形成し、この開口部３３に補修部材２０を挿入する（図２（ｃ）参照）。これにより、金属製コーナー部３１に発生した亀裂３２に対して交差する方向に補修部材２０が挿入される。その後、必要に応じて補修部材２０の基端側を金属製コーナー部３１に沿うように研削して除去する（図２（ｄ）参照）。 Subsequently, while maintaining this contact state, an opening 33 (see FIG. 2B) is formed by a drill (not shown) through the five drill guide holes 13, and the repair member 20 is inserted into the opening 33. (See FIG. 2 (c)). As a result, the repair member 20 is inserted in the direction intersecting the crack 32 generated in the metal corner portion 31. Then, if necessary, the base end side of the repair member 20 is ground and removed along the metal corner portion 31 (see FIG. 2D).

なお、この実施形態において補修部材２０は図３に示すように両端が短く、中央に向けて徐々に長くなり尖った形状を有しているが、これに限定されるものではなく、中央を尖らせないようにしたり、全て同じ長さであってもよい。 In this embodiment, as shown in FIG. 3, the repair member 20 has short ends, gradually becomes longer toward the center, and has a sharp shape, but the present invention is not limited to this, and the center is sharpened. It may not be possible, or they may all be the same length.

このように亀裂補修用治具１０を用いることにより、金属製コーナー部３１の頂部３１ａと干渉することなく、金属製コーナー部３１の頂部３１ａを挟む２面３１ｂ，３１ｃに亀裂補修用治具１０の一組の接触面１１ａ，１１ｂが各々接触し、安定した状態で開口部３３をドリルにより形成するので、金属製コーナー部３１に補修部材２０を挿入するための開口部３３を簡単かつ正確に形成することができる。 By using the crack repairing jig 10 in this way, the crack repairing jig 10 is formed on the two surfaces 31b and 31c sandwiching the top portion 31a of the metal corner portion 31 without interfering with the top portion 31a of the metal corner portion 31. Since a set of contact surfaces 11a and 11b are in contact with each other and the opening 33 is formed by a drill in a stable state, the opening 33 for inserting the repair member 20 into the metal corner portion 31 can be easily and accurately provided. Can be formed.

また、この実施形態において亀裂３２は頂部３１ａの延びる方向に沿っており、この場合、亀裂３２に対して交差する方向に補修部材２０を挿入するために金属製コーナー部３１の頂部３１ａを挟む２面３１ｂ，３１ｃに対してドリルの先端を斜めにあてて削孔する必要が生じるが、ドリルガイド孔１３によってドリルの先端が逃げないようにガイドされるため、金属製コーナー部３１に補修部材２０を挿入するための開口部３３を正確に形成することができる。 Further, in this embodiment, the crack 32 is along the extending direction of the top portion 31a, and in this case, the top portion 31a of the metal corner portion 31 is sandwiched in order to insert the repair member 20 in the direction intersecting the crack 32. It is necessary to diagonally apply the tip of the drill to the surfaces 31b and 31c to drill a hole. However, since the tip of the drill is guided by the drill guide hole 13 so as not to escape, the repair member 20 is provided at the metal corner portion 31. The opening 33 for inserting the metal can be accurately formed.

なお、亀裂３２は、図４に示しているように頂部３１ａの延びる方向と交差する方向であってもよい。この場合においても亀裂補修用治具１０のドリルガイド孔１３は亀裂３２に対して交差する方向に配置される。 The crack 32 may be in a direction intersecting the extending direction of the top portion 31a as shown in FIG. Also in this case, the drill guide hole 13 of the crack repair jig 10 is arranged in the direction intersecting the crack 32.

また、この実施形態の亀裂補修用治具１０において両端の２つのドリルガイド孔１３は、各々一組の接触面１１ａ，１１ｂを貫通するドリルガイド孔としているので、亀裂補修用治具１０を大きくすることなく、補修部材２０を挿入するための開口部３３を大きく形成できるため、大きな補修部材２０によって亀裂補修の強度を高めることができる。 Further, in the crack repair jig 10 of this embodiment, the two drill guide holes 13 at both ends are drill guide holes penetrating the contact surfaces 11a and 11b, respectively, so that the crack repair jig 10 is enlarged. Since the opening 33 for inserting the repair member 20 can be formed to be large, the strength of the crack repair can be increased by the large repair member 20.

また、この実施形態の亀裂補修用治具１０において一組の接触面１１ａ，１１ｂの各々は平面としているので、一組の接触面１１ａ，１１ｂの加工が容易となり、亀裂補修用治具１０の製造コストの低減につながる。 Further, in the crack repair jig 10 of this embodiment, since each of the set of contact surfaces 11a and 11b is flat, the set of contact surfaces 11a and 11b can be easily machined, and the crack repair jig 10 can be used. This leads to a reduction in manufacturing costs.

また、この実施形態の亀裂補修用治具１０において一組の接触面１１ａ，１１ｂが成す内角角度θは１８０度未満であるので、図５に示しているように離隔面１２を簡易な形状にすることができ、亀裂補修用治具１０の製造コストの低減につながる。 Further, in the crack repair jig 10 of this embodiment, the internal angle θ formed by the set of contact surfaces 11a and 11b is less than 180 degrees, so that the separation surface 12 has a simple shape as shown in FIG. This can lead to a reduction in the manufacturing cost of the crack repair jig 10.

なお、金属製コーナー部３１の２面３１ｂ，３１ｃが頂部３１ａを挟む角度、および一組の接触面１１ａ，１１ｂが成す内角角度θは１８０度超であってもよい。だたしこの場合、例えば図６に示しているように離隔面１２は凹形状になり、図５に示している離隔面１２に比べ複雑な形状になる。 The angle between the two surfaces 31b and 31c of the metal corner portion 31 sandwiching the top portion 31a and the internal angle angle θ formed by the pair of contact surfaces 11a and 11b may be more than 180 degrees. However, in this case, for example, as shown in FIG. 6, the separation surface 12 has a concave shape, which is more complicated than the separation surface 12 shown in FIG.

以上の実施形態では５つのドリルガイド孔１３を一直線状に連続的に配列したが、ドリルガイド孔１３の個数、大きさ、配列、一組の接触面１１ａ，１１ｂの少なくとも一つを貫通するか否かは、形成すべき開口部３３の形状に合わせて適宜変更される。 In the above embodiment, the five drill guide holes 13 are continuously arranged in a straight line, but the number, size, arrangement of the drill guide holes 13 and whether the drill guide holes 13 penetrate at least one of the contact surfaces 11a and 11b. Whether or not it is appropriately changed according to the shape of the opening 33 to be formed.

１０亀裂補修用治具
１１ａ，１１ｂ一組の接触面
１２離隔面
１３ドリルガイド孔
２０補修部材
３０構造物
３１金属製コーナー部
３１ａ金属製コーナー部の頂部
３１ｂ，３１ｃ金属製コーナー部の２面
３２亀裂
３３開口部 10 Crack repair jig 11a, 11b A set of contact surfaces 12 Separation surface 13 Drill guide hole 20 Repair member 30 Structure 31 Metal corner part 31a Metal corner top 31b, 31c Metal corner two sides 32 Crack 33 opening

Claims

It is equipped with a three-dimensional jig body used for inserting repair members in the direction intersecting the cracks generated in the metal corners of the structure.
The three-dimensional jig main body has a separation surface arranged so as to be separated from the top so as not to come into contact with the top of the metal corner .
A set of contact surfaces that are connected to both ends of the separation surface and extend in a direction inclined with respect to the separation surface so as to be in contact with each of the two surfaces sandwiching the top.
A set of side surfaces that are connected to the tip of the set of contact surfaces in the inclined direction and extend in the direction of inclination with respect to each of the set of contact surfaces so as not to contact the top and the two surfaces. ,
At least one drill guide hole that guides the drill to form an opening for inserting the repair member into the metal corner portion in a contact state in which the set of contact surfaces are in contact with each of the two surfaces. It includes at least one drill guide hole penetrating the three-dimensional jig main body portion .
A crack repair jig in which the length of each of the set of side surfaces in a direction orthogonal to the separation surface is larger than the length of each of the set of contact surfaces .

The crack repair jig according to claim 1, wherein the at least one drill guide hole includes a drill guide hole that penetrates at least one of the set of contact surfaces.

The crack repair jig according to claim 1 or 2 , wherein each of the set of contact surfaces is a flat surface.

It is a crack repair method in which a repair member is inserted in a direction intersecting a crack generated in a metal corner of a structure using a crack repair jig.
The crack repair jig is provided with a three-dimensional jig main body.
The three-dimensional jig main body has a separation surface arranged so as to be separated from the top so as not to come into contact with the top of the metal corner .
A set of contact surfaces that are connected to both ends of the separation surface and extend in a direction inclined with respect to the separation surface so as to be in contact with each of the two surfaces sandwiching the top.
A set of side surfaces that are connected to the tip of the set of contact surfaces in the inclined direction and extend in the direction of inclination with respect to each of the set of contact surfaces so as not to contact the top and the two surfaces. ,
At least one drill guide hole that guides the drill to form an opening for inserting the repair member into the metal corner portion in a contact state in which the set of contact surfaces are in contact with each of the two surfaces. It includes at least one drill guide hole penetrating the three-dimensional jig main body portion .
The length of each of the set of sides in a direction orthogonal to the separation surface is greater than the length of each of the set of contact surfaces.
The crack repair method is
The process of installing the crack repair jig so that the set of contact surfaces come into contact with the two surfaces, respectively.
After the installation step, a step of forming the opening by the drill through the at least one drill guide hole, and a step of forming the opening.
Rhagades repair methods including.

The crack repair method according to claim 4 , wherein the crack is along the extending direction of the top.