JP2015036478A - Aseismatic reinforcement structure of steel pipe structure and aseismatic reinforcement method thereof - Google Patents

Aseismatic reinforcement structure of steel pipe structure and aseismatic reinforcement method thereof Download PDF

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JP2015036478A
JP2015036478A JP2013167542A JP2013167542A JP2015036478A JP 2015036478 A JP2015036478 A JP 2015036478A JP 2013167542 A JP2013167542 A JP 2013167542A JP 2013167542 A JP2013167542 A JP 2013167542A JP 2015036478 A JP2015036478 A JP 2015036478A
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steel pipe
pipe member
divided
gusset
seismic reinforcement
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JP6460622B2 (en
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一雄 高瀬
Kazuo Takase
一雄 高瀬
伊藤 崇晃
Takaaki Ito
崇晃 伊藤
栄順 米谷
Eijun Yonetani
栄順 米谷
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Toyota T&S Construction Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an aseismatic reinforcement structure of steel pipe structure and an aseismatic reinforcement method thereof capable of connecting an aseismatic reinforcement member to an existing steel pipe member without employing a welding method while ensuring rigidity and proof strength at a joint portion therebetween.SOLUTION: Divided gussets 3A and 3B include: a clamping part 3b having an inner face which fits with a steel pipe member 1 along an outer face; and plate-like attachment parts 3c and 3d which are fixed to both ends in a circumferential direction of the clamping part 3b and protrude outward from the steel pipe member 1 in a diameter direction. The neighboring both attachment parts 3c and 3c (3d, 3d) are tightened by a bolt 5a and a nut 5b to bring the clamping parts 3b and 3b into close contact with the outer face of the steel pipe member 1. An aseismatic reinforcement member 2 is fixed to a desired divided gusset 3B in the plural divided gussets.

Description

本発明は、鉄骨パイプ構造の耐震補強構造とその耐震補強工法に関する。   The present invention relates to a seismic reinforcement structure for a steel pipe structure and a seismic reinforcement method for the same.

従来、金属パイプで建物の骨組を構築する鉄骨パイプ構造において、既存の鉄骨パイプ部材の中間に補強部材を連結して耐震補強をしたいとの要望がある。   2. Description of the Related Art Conventionally, in a steel pipe structure in which a framework of a building is constructed with a metal pipe, there is a demand for a seismic reinforcement by connecting a reinforcing member in the middle of an existing steel pipe member.

しかし、鉄骨パイプ部材の外周面にガセットプレートを直接溶接し、該ガセットプレートに補強部材を固着する工法を採用すると、ガセットプレートの溶接時の熱により鉄骨パイプ部材が損傷したり、強度が低下する問題があり、無溶接工法で十分な剛性と耐力を有する耐震補強が要望されている。   However, if a method is adopted in which a gusset plate is directly welded to the outer peripheral surface of the steel pipe member and a reinforcing member is fixed to the gusset plate, the steel pipe member is damaged or the strength is reduced due to heat generated during welding of the gusset plate. There is a problem, and there is a demand for seismic reinforcement having sufficient rigidity and strength by a welding-free method.

そこで、本発明は、溶接工法を採用することなく、鉄骨パイプ部材に耐震補強部材を連結でき、かつ、その連結部での剛性、耐力を十分確保できる鉄骨パイプ構造の耐震補強構造とその補強工法を提供することを目的とするものである。   Accordingly, the present invention provides a seismic reinforcing structure for a steel pipe structure that can connect an earthquake resistant reinforcing member to a steel pipe member without adopting a welding method, and can sufficiently ensure rigidity and strength at the connecting portion, and its reinforcing method. Is intended to provide.

前記の課題を解決するために、請求項1記載の発明は、既存の鉄骨パイプ部材に耐震補強部材を連結する構造であって、
前記鉄骨パイプ部材の外周にガセットを、周方向において複数個に分割して配置し、
分割された分割ガセットは、前記鉄骨パイプ部材の外面に沿って嵌合する内面を有する挟着部と、該挟着部の周方向の両端に固着されて鉄骨パイプ部材の径方向の外側へ突出する平板状の取付部とを有し、
前記隣接する両取付部相互をボルト及びナットで締付けて前記各挟着部を前記鉄骨パイプ部材の外面に圧着させ、
前記複数に分割された分割ガセットのうち所望の分割ガセットに前記耐震補強部材を固着したことを特徴とする鉄骨パイプ構造の耐震補強構造である。
In order to solve the above problems, the invention according to claim 1 is a structure for connecting an earthquake-resistant reinforcing member to an existing steel pipe member,
A gusset is arranged on the outer periphery of the steel pipe member and divided into a plurality in the circumferential direction,
The divided gussets are clamped portions having inner surfaces that fit along the outer surface of the steel pipe member, and are fixed to both ends in the circumferential direction of the clamped portion and project outward in the radial direction of the steel pipe member. And a flat mounting portion
The adjacent mounting portions are tightened with bolts and nuts, and the sandwiched portions are crimped to the outer surface of the steel pipe member,
A seismic reinforcement structure of a steel pipe structure, wherein the seismic reinforcement member is fixed to a desired divided gusset among the plurality of divided gussets.

請求項2記載の発明は、請求項1記載の鉄骨パイプ構造の耐震補強構造において、前記隣接する両取付部相互を、高力ボルトにより摩擦接合して、前記各挟着部を、前記鉄骨パイプ部材の外面に圧着したことを特徴とするものである。   According to a second aspect of the present invention, in the seismic reinforcement structure of the steel pipe structure according to the first aspect, the two adjacent mounting portions are frictionally joined to each other with a high-strength bolt, and the respective sandwiched portions are connected to the steel pipe. It is characterized by being crimped to the outer surface of the member.

請求項3記載の発明は、請求項1又は2記載の鉄骨パイプ構造の耐震補強構造において、前記鉄骨パイプ部材の外面と、前記分割ガセットの挟着部の内面との間に樹脂を介在させたことを特徴とするものである。   The invention according to claim 3 is the seismic reinforcement structure of the steel pipe structure according to claim 1 or 2, wherein a resin is interposed between the outer surface of the steel pipe member and the inner surface of the sandwiched portion of the divided gusset. It is characterized by this.

請求項4記載の発明は、既存の鉄骨パイプ部材に耐震補強部材を連結する耐震補強工法であって、
前記鉄骨パイプ部材の外周にガセットを、周方向において複数個に分割して配置し、
分割された分割ガセットは、前記鉄骨パイプ部材の外面に沿って嵌合する内面を有する挟着部と、該挟着部の周方向の両端に固着されて鉄骨パイプ部材の径方向の外側へ突出する平板状の取付部とを有し、
前記挟着部を前記鉄骨パイプ部材の外面に無圧接で嵌合した状態では、隣接する分割ガセットの取付部の相互間に所定の隙間が生じるように前記分割されたガセットを形成し、
前記隣接する両取付部相互をボルト及びナットで締付けて、前記各挟着部を前記鉄骨パイプ部材の外面に圧着させ、
前記複数に分割された分割ガセットのうち所望の分割ガセットに前記耐震補強部材を固着したことを特徴とする鉄骨パイプ構造の耐震補強工法である。
The invention according to claim 4 is an earthquake-resistant reinforcement method for connecting an earthquake-resistant reinforcement member to an existing steel pipe member,
A gusset is arranged on the outer periphery of the steel pipe member and divided into a plurality in the circumferential direction,
The divided gussets are clamped portions having inner surfaces that fit along the outer surface of the steel pipe member, and are fixed to both ends in the circumferential direction of the clamped portion and project outward in the radial direction of the steel pipe member. And a flat mounting portion
In the state where the sandwiched portion is fitted to the outer surface of the steel pipe member without pressure contact, the split gusset is formed so that a predetermined gap is generated between the mounting portions of the adjacent split gussets,
Tighten the two adjacent mounting parts with bolts and nuts, and crimp each clamping part to the outer surface of the steel pipe member,
A seismic reinforcement method for steel pipe structure, wherein the seismic reinforcement member is fixed to a desired divided gusset among the plurality of divided gussets.

請求項5記載の発明は、請求項4記載の鉄骨パイプ構造の耐震補強工法において、前記隣接する両取付部相互を、高力ボルトにより摩擦接合して、前記各挟着部を、前記鉄骨パイプ部材の外面に圧着することを特徴とするものである。   According to a fifth aspect of the present invention, in the seismic reinforcement method for a steel pipe structure according to the fourth aspect, the adjacent mounting portions are frictionally joined to each other by a high-strength bolt, and the respective sandwiched portions are connected to the steel pipe. It is characterized by being crimped to the outer surface of the member.

請求項6記載の発明は、請求項4又は5記載の鉄骨パイプ構造の耐震補強工法において、前記鉄骨パイプ部材の外面と、前記分割ガセットの挟着部の内面との間に樹脂を介在させたことを特徴とするものである。   The invention according to claim 6 is the seismic reinforcement method for the steel pipe structure according to claim 4 or 5, wherein a resin is interposed between the outer surface of the steel pipe member and the inner surface of the sandwiched portion of the split gusset. It is characterized by this.

本発明によれば、隣接する両取付部相互をボルト及びナットで締め付けて接合することにより、各分割ガセットの挟着部を鉄骨パイプ部材の外面に圧着接合できるので、溶接工法が採用できない鉄骨パイプ部材に耐震補強部材を、十分な剛性と耐力で接合ですることができ、かつ、既存の鉄骨パイプ部材において、耐震補強部材の接合が容易にできるとともに、その接合部の剛性と耐力も高めることができる。   According to the present invention, since the adjacent fitting portions are fastened and joined with bolts and nuts, the sandwiched portion of each split gusset can be crimped and joined to the outer surface of the steel pipe member. The seismic reinforcement member can be joined to the member with sufficient rigidity and strength, and the existing steel pipe member can be easily joined with the seismic reinforcement member, and the rigidity and strength of the joint can be increased. Can do.

請求項2記載の発明よれば、更に、高力ボルト摩擦接合により、更に一層、前記剛性と耐力を高めることができる。   According to the second aspect of the present invention, the rigidity and proof stress can be further increased by high-strength bolt friction bonding.

請求項3記載の発明よれば、更に、鉄骨パイプ部材の外面と挟着部の内面との密接度を向上させ、前記の剛性と耐力の向上を図ることができる。   According to the third aspect of the present invention, the tightness between the outer surface of the steel pipe member and the inner surface of the sandwiched portion can be further improved, and the rigidity and proof stress can be improved.

請求項4乃至6記載の発明よれば、前記請求項1乃至3記載の発明の効果を発揮する耐震補強工法を提供できる。   According to invention of Claim 4 thru | or 6, the earthquake-proof reinforcement construction method which exhibits the effect of the invention of said Claim 1 thru | or 3 can be provided.

本発明の実施例1を示す連結部の斜視図。The perspective view of the connection part which shows Example 1 of this invention. 図1におけるA−A線断面図。FIG. 2 is a sectional view taken along line AA in FIG. 1. 本発明の実施例1における鉄骨パイプ部材とガセットの接合前の状態を示す断面図。Sectional drawing which shows the state before joining of the steel pipe member and gusset in Example 1 of this invention. 図3の状態からガセットの挟着部を鉄骨パイプ部材に接合した図。The figure which joined the clamping part of the gusset to the steel pipe member from the state of FIG. 本発明の実施例2を示す要部断面図。Sectional drawing which shows the principal part which shows Example 2 of this invention. 図5の実施例2における説明断面図。Explanatory sectional drawing in Example 2 of FIG. 本発明の実施例3を示す断面図。Sectional drawing which shows Example 3 of this invention. 本発明の実施例4を示す正面図。The front view which shows Example 4 of this invention. 本発明の実施例5を示すもので、鉄骨パイプ部材とガセットを分離した断面図。Sectional drawing which shows Example 5 of this invention and isolate | separated the steel pipe member and the gusset.

本発明を実施するための形態を、図1乃至図9に示す実施例に基づいて説明する。
[実施例1]
A mode for carrying out the present invention will be described based on the embodiment shown in FIGS.
[Example 1]

図1乃至図4は、本発明の実施例1を示すもので、既存の鉄骨パイプ構造における鉄骨パイプ部材1の軸方向中間部に耐震補強部材、例えば、引張力に対抗する補強部材2を接合する場合の実施例である。   1 to 4 show a first embodiment of the present invention, in which an anti-seismic reinforcing member, for example, a reinforcing member 2 that resists a tensile force, is joined to an axially intermediate portion of a steel pipe member 1 in an existing steel pipe structure. This is an example of the case.

本実施例における鉄骨パイプ部材1は、建物の骨組を構築する部材で、外周面が所望の直径の真円で形成された金属製の中空管である。   The steel pipe member 1 in the present embodiment is a member that constructs a framework of a building, and is a metal hollow tube whose outer peripheral surface is formed of a perfect circle having a desired diameter.

前記鉄骨パイプ部材1における前記耐震補強部材2が取り付けられる部位には、ガセット3が取り付けられる。該ガセット3は、本実施例1では、鉄骨パイプ部材1の周方向において2分割して成る第1の分割ガセット3Aと第2の分割ガセット3Bで構成されている。   A gusset 3 is attached to a portion of the steel pipe member 1 where the seismic reinforcement member 2 is attached. In the first embodiment, the gusset 3 is composed of a first divided gusset 3A and a second divided gusset 3B which are divided into two in the circumferential direction of the steel pipe member 1.

前記第1の分割ガセット3Aは、前記鉄骨パイプ部材1の周方向の外面1aに沿った円弧状の内面3aを有する半円状の挟着部3bと、該挟着部3bの周方向の両端部に固設されて鉄骨パイプ部材1の径方向の外側へ突出する平板状の取付部3c,3dとから成る。前記挟着部3bの内部には、前記鉄骨パイプ部材1の略半周部分を嵌合できる嵌合空間3eが形成されている。   The first divided gusset 3A includes a semicircular sandwiching portion 3b having an arcuate inner surface 3a along the circumferential outer surface 1a of the steel pipe member 1, and both circumferential ends of the sandwiching portion 3b. It comprises plate-like attachment portions 3c and 3d that are fixed to the portion and project outward in the radial direction of the steel pipe member 1. A fitting space 3e in which a substantially half-circumferential portion of the steel pipe member 1 can be fitted is formed in the sandwiching portion 3b.

また、前記挟着部3b及び前記取付部3c,3dにおける軸方向X−X、すなわち、鉄骨パイプ部材1の軸方向X−Xでの長さは、夫々所望の長さに設定されている。   Moreover, the length in the axial direction XX in the said clamping part 3b and the said attachment parts 3c and 3d, ie, the axial direction XX of the steel pipe member 1, is each set to desired length.

更に、前記挟着部3bと取付部3c,3dは溶接3fにより固着され、前記両取付部3c,3dにはボルト挿通穴3gが、鉄骨パイプ部材1の軸方向X−Xに沿って所定数形成されている。図の実施例では、各取付部3c,3dに4個等間隔で形成した。   Further, the sandwiching portion 3b and the attachment portions 3c, 3d are fixed by welding 3f, and a bolt insertion hole 3g is provided in the attachment portions 3c, 3d in a predetermined number along the axial direction XX of the steel pipe member 1. Is formed. In the embodiment shown in the figure, the four attachment portions 3c and 3d are formed at equal intervals.

前記第2の分割ガセット3Bは、前記第1の分割ガセット3Aと同一構造で形成されている。そのため、該第2の分割ガセット3Bについては、前記第1の分割ガセット3Aと同一部材、同一部分に前記と同一の符号を付してその説明を省略する。   The second divided gusset 3B has the same structure as the first divided gusset 3A. Therefore, for the second divided gusset 3B, the same members and the same parts as those of the first divided gusset 3A are denoted by the same reference numerals, and the description thereof is omitted.

なお、前記第2の分割ガセット3Bにおける取付部3dは、前記第1の分割ガセット3Aの取付部3dよりも外方へ長く形成され、前記耐震補強部材2の取付部材となっている。   Note that the attachment portion 3d of the second divided gusset 3B is formed to be longer outward than the attachment portion 3d of the first divided gusset 3A, and serves as an attachment member for the seismic reinforcement member 2.

また、前記第1の分割ガセット3Aの挟着部3bと第2の分割ガセット3Bの挟着部3bの夫々の周方向の長さは、これら挟着部3b,3bを、図4に示すように、前記鉄骨パイプ部材1の外面に対して、双方から圧接することなく嵌合接触させた状態(無圧接状態)においては、第1の分割ガセット3Aの挟着部3bの両端面と、第2の分割ガセット3Bの挟着部3bの両端面との間に所定の隙間Dが生じる長さに設定されている。   The circumferential lengths of the sandwiched portion 3b of the first divided gusset 3A and the sandwiched portion 3b of the second divided gusset 3B are shown in FIG. In addition, in a state where the outer surface of the steel pipe member 1 is fitted and contacted without being pressed from both sides (non-pressure contact state), both end surfaces of the sandwiching portion 3b of the first divided gusset 3A, The length is set such that a predetermined gap D is formed between both end faces of the sandwiched portion 3b of the second divided gusset 3B.

更に、取付部3c,3dは、前記の無圧接状態においては、第1の分割ガセット3Aの取付部3c,3dと第2の分割ガセット3Bの取付部3c,3dとの間に前記の隙間Dと同様の所定の隙間Dが生じるように設けられている。   Furthermore, the attachment portions 3c and 3d are configured so that the gap D is between the attachment portions 3c and 3d of the first divided gusset 3A and the attachment portions 3c and 3d of the second divided gusset 3B in the non-pressure contact state. The same predetermined gap D as that in FIG.

前記の隙間Dは、所定に設定するが、本実施例として約2mmに設定した。
また、前記両分割ガセット3A,3Bに形成した挿通穴3g,3gは、両分割ガセット3A,3Bを前記のように、鉄骨パイプ部材1に嵌合した場合、相互に合致する位置に形成されている。
The gap D is set to a predetermined value, but is set to about 2 mm in this embodiment.
Further, the insertion holes 3g, 3g formed in the both divided gussets 3A, 3B are formed at positions that match each other when the divided gussets 3A, 3B are fitted to the steel pipe member 1 as described above. Yes.

図4に示すように、前記鉄骨パイプ部材1に嵌合した両ガセット3A,3Bは、図2に示すように、高力ボルト5により所定量締め付けて摩擦接合される。   As shown in FIG. 4, both gussets 3A and 3B fitted to the steel pipe member 1 are friction-joined by tightening a predetermined amount with high-strength bolts 5 as shown in FIG.

該高力ボルト5は、ボルト5aとナット5bとからなり、該ボルト5aを両分割ガセット3A,3Bのボルト挿通穴3g,3gに挿通し、該ボルト5にナット5bを締め付け機器により所定量締め付け、第1の分割ガセット3Aの取付部3c(3d)と、第2の分割ガセット3Bの取付部3c(3d)を高力摩擦接合する。   The high-strength bolt 5 includes a bolt 5a and a nut 5b. The bolt 5a is inserted into the bolt insertion holes 3g and 3g of both split gussets 3A and 3B, and the nut 5b is fastened to the bolt 5 by a predetermined amount by a device. The attachment portion 3c (3d) of the first divided gusset 3A and the attachment portion 3c (3d) of the second divided gusset 3B are subjected to high-strength friction welding.

前記のように、両分割ガセット3A,3Bにおける取付部3c,3c(3d,3d)が隙間D分離間した状態から隙間D分移動して相互に圧接すると、両分割ガセット3A,3Bの挟着部3b,3bの内面3a,3aが鉄骨パイプ部材1の外面1aに圧着され、両分割ガセット3A,3Bは、鉄骨パイプ部材1に高力摩擦接合によって強固に固着される。   As described above, when the mounting portions 3c and 3c (3d and 3d) in the two divided gussets 3A and 3B are moved by the gap D from the state where the gaps D are separated, the two gussets 3A and 3B are clamped. The inner surfaces 3a, 3a of the portions 3b, 3b are pressure-bonded to the outer surface 1a of the steel pipe member 1, and both split gussets 3A, 3B are firmly fixed to the steel pipe member 1 by high-strength friction bonding.

前記耐震補強部材2は、引張力に対抗する鋼棒等からなり、その一端にプレート6が溶接で固設され、該プレート6が前記第2の分割ガセット3Bの取付部3dに、ボルト或いはピン等の適宜連結手段7で連結されている。なお、該プレート6も耐震補強部材2の一部として以下説明する。   The seismic reinforcement member 2 is made of a steel rod or the like that resists tensile force, and a plate 6 is fixed to one end thereof by welding, and the plate 6 is attached to a mounting portion 3d of the second divided gusset 3B with a bolt or a pin. These are connected by appropriate connecting means 7 such as. The plate 6 will be described below as a part of the seismic reinforcement member 2.

前記耐震補強部材2の他端は、図示しない既存の構造材等に連結されている。
したがって、前記のように、鉄骨パイプ部材1とガセット3が連結されることにより耐震補強部材2が鉄骨パイプ部材1に連結される。
The other end of the seismic reinforcement member 2 is connected to an existing structural material (not shown).
Therefore, the seismic reinforcement member 2 is connected to the steel pipe member 1 by connecting the steel pipe member 1 and the gusset 3 as described above.

次に、前記実施例1の構造において、既存の鉄骨パイプ部材1に耐震補強部材2を取付ける工法について説明する。   Next, a method of attaching the seismic reinforcement member 2 to the existing steel pipe member 1 in the structure of the first embodiment will be described.

先ず、第2の分割ガセット3Bの取付部3dに、プレート6を介して耐震補強部材2を固設する。   First, the seismic reinforcement member 2 is fixed to the mounting portion 3d of the second divided gusset 3B via the plate 6.

次いで、第1の分割ガセット3Aと、第2の分割ガセット3Bを、図3に示すように、既存の鉄骨パイプ部材1を挟んで対向させた状態から、図4に示すように、夫々の挟着部3b,3bを鉄骨パイプ部材1の外面1aに嵌合して対向配置する。このとき、両挟着部3b,3bの内面3aと鉄骨パイプ部材1の外面1aとの無圧接での接触状態においては、対向する取付部3c,3c(3d,3d)間に隙間Dが生じる。   Next, as shown in FIG. 4, the first divided gusset 3A and the second divided gusset 3B are opposed to each other with the existing steel pipe member 1 interposed therebetween as shown in FIG. The landing portions 3b, 3b are fitted to the outer surface 1a of the steel pipe member 1 so as to face each other. At this time, in a non-pressure contact state between the inner surface 3a of both sandwiched portions 3b and 3b and the outer surface 1a of the steel pipe member 1, a gap D is generated between the mounting portions 3c and 3c (3d and 3d) facing each other. .

次いで、図2に示すように、第1の分割ガセット3Aのボルト挿通穴3gと第2の分割ガセット3Bのボルト挿通穴3gに高力ボルト5のボルト5aを挿通し、ナット5bを周知の締め付け機器により、両取付部3c,3c(3d,3d)相互が所定の高圧で密着するように締め付ける。これにより、両取付部3c,3c(3d,3d)相互が高力摩擦接合され、かつ、両ガセット3A,3Bにおける取付部3c,3c(3d,3d)が隙間D分、近接方向に移動することにより、両挟着部3b,3bの内面3aが鉄骨パイプ部材1の外面1aに圧着され、両分割ガセット3A,3Bは鉄骨パイプ部材1に高力摩擦接合により強固に固着される。   Next, as shown in FIG. 2, the bolt 5a of the high strength bolt 5 is inserted into the bolt insertion hole 3g of the first divided gusset 3A and the bolt insertion hole 3g of the second divided gusset 3B, and the nut 5b is tightened in a known manner. The two attachment portions 3c, 3c (3d, 3d) are tightened so as to be in close contact with each other at a predetermined high pressure. As a result, the attachment portions 3c, 3c (3d, 3d) are frictionally joined to each other, and the attachment portions 3c, 3c (3d, 3d) in both gussets 3A, 3B move in the proximity direction by the gap D. As a result, the inner surfaces 3a of both sandwiched portions 3b, 3b are pressed against the outer surface 1a of the steel pipe member 1, and the two split gussets 3A, 3B are firmly fixed to the steel pipe member 1 by high-strength friction bonding.

以上のようであるから、本実施例1においては、溶接工法が採用できない鉄骨パイプ部材1と耐震補強部材2とを強固に接合することが出来る。しかも、鉄骨パイプ部材1と耐震補強部材2との接合部に両分割ガセット3A,3Bが高力ボルト摩擦接合により配置されることにより、その接合部の十分な剛性と耐力を確保できる。   As described above, in the first embodiment, the steel pipe member 1 and the seismic reinforcement member 2 that cannot employ the welding method can be firmly joined. In addition, since the two split gussets 3A and 3B are arranged at the joint between the steel pipe member 1 and the seismic reinforcement member 2 by high-strength bolt friction joining, sufficient rigidity and proof strength of the joint can be ensured.

[実施例2]
図5及び図6は本発明の実施例2を示す。
[Example 2]
5 and 6 show a second embodiment of the present invention.

前記実施例1における鉄骨パイプ部材1において、前記耐震補強部材2との接合位置の外面1aに、図6に示すようにキズによる凹面10や、その他の凸面があると、前記ガセット3の挟着部3bと鉄骨パイプ部材1との密着度が低下する恐れがある。   In the steel pipe member 1 according to the first embodiment, if there is a concave surface 10 due to scratches or other convex surface as shown in FIG. There is a possibility that the degree of adhesion between the portion 3b and the steel pipe member 1 is lowered.

そこで、本実施例2においては、接合工程の前工程として、前記鉄骨パイプ部材1の外面1aと前記ガセット3の挟着部3bの内面3aの何れか一方或いは双方に、図5に示すように、樹脂、例えば、エポキシ樹脂11を塗布して介在させたものである。   Therefore, in the second embodiment, as a pre-process of the joining process, either or both of the outer surface 1a of the steel pipe member 1 and the inner surface 3a of the sandwiching portion 3b of the gusset 3 are shown in FIG. A resin, for example, an epoxy resin 11 is applied and interposed.

その他の構造及び工法は、前記実施例1と同様であるため、その構造及び説明を省略する。
そして、本実施例2において、流動性の樹脂を塗布した後、前記実施例1と同様に、第1、第2の分割ガセット3A,3Bをボルト締めして挟着部3bを鉄骨パイプ部材1へ圧着することにより、前記樹脂11が前記凹面10の隙間に充填され、その樹脂の硬化により、ガセット3と鉄骨パイプ部材1の外面1aとの密着度が向上し、接合部の十分な剛性と耐力を確保でき、前記実施例1と同様の効果を発揮できる。
Since other structures and construction methods are the same as those of the first embodiment, the structure and description thereof are omitted.
In the second embodiment, after applying a fluid resin, the first and second divided gussets 3A and 3B are bolted to fix the sandwiched portion 3b to the steel pipe member 1 as in the first embodiment. The resin 11 is filled in the gaps of the concave surface 10 by being crimped to the surface, and by hardening the resin, the degree of adhesion between the gusset 3 and the outer surface 1a of the steel pipe member 1 is improved, and the joint has sufficient rigidity. Yield strength can be ensured, and the same effect as in Example 1 can be exhibited.

[実施例3]
図7は、本発明の実施例3の一例を示す。
[Example 3]
FIG. 7 shows an example of Embodiment 3 of the present invention.

前記実施例1においては、ガセット3を周方向に2分割した2個の分割ガセット3A,3Bで構成したが、2個に限るものではなく、2個以上の複数に分割された分割ガセットを用いて構成しても良い。例えば、図7に示すように、ガセット3を周方向に4分割した第3の分割ガセット3C〜第6の分割ガセット3Fで構成しても良い。   In the first embodiment, the gusset 3 is configured by the two divided gussets 3A and 3B obtained by dividing the gusset 3 into two in the circumferential direction. However, the gusset 3 is not limited to two, and two or more divided gussets are used. May be configured. For example, as shown in FIG. 7, the gusset 3 may be composed of a third divided gusset 3C to a sixth divided gusset 3F obtained by dividing the gusset 3 into four in the circumferential direction.

前記各分割ガセット3C〜3Fは、周方向に4分割された形状以外の構造は、前記実施例1と同様であるため、前記と同一部材には前記と同一符号を付してその説明を省略する。また、本実施例の工法も前記実施例1と同様である。   Since each of the divided gussets 3C to 3F has the same structure as that of the first embodiment except for the shape divided into four in the circumferential direction, the same members as those described above are denoted by the same reference numerals and the description thereof is omitted. To do. Further, the construction method of this embodiment is the same as that of the first embodiment.

本実施例3によれば、前記耐震補強部材2を、4方向において、所望の数と方向に連結できる。更に、前記実施例1と同様の効果を発揮できる。   According to the third embodiment, the seismic reinforcement member 2 can be connected in a desired number and direction in four directions. Furthermore, the same effects as those of the first embodiment can be exhibited.

[実施例4]
前記実施例1〜3は、耐震補強部材2として鋼棒を用いた例であるが、その他、耐震補強部材として、図8に示すような耐震補強用の構造材、例えば、アングル材13を用い、これを前記第2の分割ガセット3Bの取付部3dに連結するようにしても良い。
[Example 4]
Examples 1 to 3 are examples in which a steel rod is used as the seismic reinforcement member 2, but as the seismic reinforcement member, a structural material for seismic reinforcement as shown in FIG. 8, for example, an angle member 13 is used. This may be connected to the mounting portion 3d of the second divided gusset 3B.

その他の構造は、前記実施例1と同様であるため、前記と同一部材には前記と同一符号を付して、その説明を省略する。
本実施例4についても、前記実施例1と同様の効果を発揮できる。
Since other structures are the same as those in the first embodiment, the same members as those described above are denoted by the same reference numerals as those described above, and the description thereof is omitted.
Also in the fourth embodiment, the same effect as in the first embodiment can be exhibited.

[実施例5]
前記実施例1〜4は、鉄骨パイプ部材1が中空円管のものに、本発明を適用した例であるが、鉄骨パイプ部材として横断面が多角形の中空管のものに本発明を適用しても良い。
[Example 5]
Examples 1 to 4 are examples in which the present invention is applied to a steel pipe member 1 having a hollow circular pipe. However, the present invention is applied to a steel pipe member having a polygonal cross section as a steel pipe member. You may do it.

図9は、横断面が四角形の鉄骨パイプ部材1Aに本発明を適用した実施例5を示す。
図9に示す実施例は、鉄骨パイプ部材1Aの横断面における中心を通る線Y−Yで2分割された一方の側のコ字状外面1aに沿った内面3aを有する一方の分割ガセット3Gと、他方の側のコ字状外面1aに沿った内面3aを有する他方の分割ガセット3Hを用いている。
FIG. 9 shows a fifth embodiment in which the present invention is applied to a steel pipe member 1A having a square cross section.
The embodiment shown in FIG. 9 includes one split gusset 3G having an inner surface 3a along a U-shaped outer surface 1a on one side that is divided into two by a line YY passing through the center in the cross section of the steel pipe member 1A. The other divided gusset 3H having the inner surface 3a along the U-shaped outer surface 1a on the other side is used.

すなわち、分割ガセット3G,3Hは、断面コ字状の挟着部3bと、該挟着部3bの両端に前記実施例と同様の取付部3c,3dを固設して形成されている。   That is, the divided gussets 3G and 3H are formed by fixing a sandwiching portion 3b having a U-shaped cross section and attachment portions 3c and 3d similar to those of the above-described embodiment to both ends of the sandwiching portion 3b.

その他の構造及び工法は、前記実施例1と同様であるため、前記と同一部材には前記と同一符号を付して、その説明を省略する。   Since other structures and construction methods are the same as those of the first embodiment, the same members as those described above are denoted by the same reference numerals as those described above, and the description thereof is omitted.

本実施例5において、前記と同様に、両分割ガセット3G,3Hを鉄骨パイプ部材1Aに嵌合して、両取付部3c,3c(3d,3d)を高力ボルト等の摩擦接合することにより、前記と同様の作用、効果を発揮できる。   In the fifth embodiment, similarly to the above, by fitting the two divided gussets 3G and 3H to the steel pipe member 1A and friction-joining both attachment portions 3c and 3c (3d and 3d) such as high-strength bolts. The effects and effects similar to those described above can be exhibited.

[実施例6]
前記実施例3〜5において、前記実施例2のように、樹脂11を接合前に塗布しても良い。
[Example 6]
In the third to fifth embodiments, the resin 11 may be applied before bonding as in the second embodiment.

更に、前記実施例1,3〜6において、鉄骨パイプ部材1の接合部の外面をブラスト処理しても良い。該ブラスト処理により、鉄骨パイプ部材1とガセット3との接合部の摩擦抵抗を高め、その剛性と耐力を高めることができる。   Furthermore, in the said Example 1, 3-6, you may blast the outer surface of the junction part of the steel pipe member 1. FIG. By this blast treatment, the frictional resistance of the joint between the steel pipe member 1 and the gusset 3 can be increased, and the rigidity and proof stress thereof can be increased.

[その他の実施例]
前記実施例は、各分割ガセットの取付部相互の接合を高力ボルトによる高力摩擦接合としたが、この取付部相互を、高力ボルトを使用することなく、通常のボルト及びナットを用いて接合しても良い。
[Other Examples]
In the above embodiment, the joint portions of the divided gussets are joined to each other by high-strength friction joints using high-strength bolts. However, the attachment portions can be joined to each other using normal bolts and nuts without using high-strength bolts. You may join.

この通常のボルト接合であっても、その締め付けにより、各分割ガセットの挟着部が鉄骨パイプ部材の外面に圧着して前記と同様の作用、効果を発揮できる。   Even in this normal bolt joint, the clamping portion of each divided gusset can be crimped to the outer surface of the steel pipe member by tightening, and the same operations and effects as described above can be exhibited.

1 鉄骨パイプ部材
1a 外面
2 耐震補強部材
3 ガセット
3A〜3H 分割ガセット
3a 内面
3b 挟着部
3c,3d 取付部
5 高力ボルト
5a ボルト
5b ナット
11 樹脂
D 隙間
DESCRIPTION OF SYMBOLS 1 Steel pipe member 1a Outer surface 2 Seismic reinforcement member 3 Gusset 3A-3H Division gusset 3a Inner surface 3b Clamping part 3c, 3d Mounting part 5 High strength bolt 5a Bolt 5b Nut 11 Resin D Crevice

Claims (6)

既存の鉄骨パイプ部材に耐震補強部材を連結する構造であって、
前記鉄骨パイプ部材の外周にガセットを、周方向において複数個に分割して配置し、
分割された分割ガセットは、前記鉄骨パイプ部材の外面に沿って嵌合する内面を有する挟着部と、該挟着部の周方向の両端に固着されて鉄骨パイプ部材の径方向の外側へ突出する平板状の取付部とを有し、
前記隣接する両取付部相互をボルト及びナットで締付けて前記各挟着部を前記鉄骨パイプ部材の外面に圧着させ、
前記複数に分割された分割ガセットのうち所望の分割ガセットに前記耐震補強部材を固着したことを特徴とする鉄骨パイプ構造の耐震補強構造。
It is a structure that connects seismic reinforcement members to existing steel pipe members,
A gusset is arranged on the outer periphery of the steel pipe member and divided into a plurality in the circumferential direction,
The divided gussets are clamped portions having inner surfaces that fit along the outer surface of the steel pipe member, and are fixed to both ends in the circumferential direction of the clamped portion and project outward in the radial direction of the steel pipe member. And a flat mounting portion
The adjacent mounting portions are tightened with bolts and nuts, and the sandwiched portions are crimped to the outer surface of the steel pipe member,
A seismic reinforcement structure having a steel pipe structure, wherein the seismic reinforcement member is fixed to a desired divided gusset among the plurality of divided gussets.
前記隣接する両取付部相互を、高力ボルトにより摩擦接合して、前記各挟着部を、前記鉄骨パイプ部材の外面に圧着したことを特徴とする請求項1記載の鉄骨パイプ構造の耐震補強構造。   2. The seismic reinforcement of a steel pipe structure according to claim 1, wherein the adjacent mounting portions are frictionally joined to each other by high-strength bolts, and the respective sandwiched portions are crimped to the outer surface of the steel pipe member. Construction. 前記鉄骨パイプ部材の外面と、前記分割ガセットの挟着部の内面との間に樹脂を介在させたことを特徴とする請求項1又は2記載の鉄骨パイプ構造の耐震補強構造。   The seismic reinforcement structure for a steel pipe structure according to claim 1 or 2, wherein a resin is interposed between an outer surface of the steel pipe member and an inner surface of the sandwiched gusset. 既存の鉄骨パイプ部材に耐震補強部材を連結する耐震補強工法であって、
前記鉄骨パイプ部材の外周にガセットを、周方向において複数個に分割して配置し、
分割された分割ガセットは、前記鉄骨パイプ部材の外面に沿って嵌合する内面を有する挟着部と、該挟着部の周方向の両端に固着されて鉄骨パイプ部材の径方向の外側へ突出する平板状の取付部とを有し、
前記挟着部を前記鉄骨パイプ部材の外面に無圧接で嵌合した状態では、隣接する分割ガセットの取付部の相互間に所定の隙間が生じるように前記分割されたガセットを形成し、
前記隣接する両取付部相互をボルト及びナットで締付けて、前記各挟着部を前記鉄骨パイプ部材の外面に圧着させ、
前記複数に分割された分割ガセットのうち所望の分割ガセットに前記耐震補強部材を固着したことを特徴とする鉄骨パイプ構造の耐震補強工法。
A seismic reinforcement method for connecting seismic reinforcement members to existing steel pipe members,
A gusset is arranged on the outer periphery of the steel pipe member and divided into a plurality in the circumferential direction,
The divided gussets are clamped portions having inner surfaces that fit along the outer surface of the steel pipe member, and are fixed to both ends in the circumferential direction of the clamped portion and project outward in the radial direction of the steel pipe member. And a flat mounting portion
In the state where the sandwiched portion is fitted to the outer surface of the steel pipe member without pressure contact, the split gusset is formed so that a predetermined gap is generated between the mounting portions of the adjacent split gussets,
Tighten the two adjacent mounting parts with bolts and nuts, and crimp each clamping part to the outer surface of the steel pipe member,
A seismic reinforcement method for a steel pipe structure, wherein the seismic reinforcement member is fixed to a desired divided gusset among the plurality of divided gussets.
前記隣接する両取付部相互を、高力ボルトにより摩擦接合して、前記各挟着部を、前記鉄骨パイプ部材の外面に圧着することを特徴とする請求項4記載の鉄骨パイプ構造の耐震補強工法。   The seismic reinforcement of the steel pipe structure according to claim 4, wherein the adjacent mounting portions are frictionally joined to each other by a high-strength bolt, and the respective sandwiched portions are crimped to the outer surface of the steel pipe member. Construction method. 前記鉄骨パイプ部材の外面と、前記分割ガセットの挟着部の内面との間に樹脂を介在させたことを特徴とする請求項4又は5記載の鉄骨パイプ構造の耐震補強工法。   6. The method for seismic reinforcement of a steel pipe structure according to claim 4, wherein a resin is interposed between the outer surface of the steel pipe member and the inner surface of the sandwiched gusset.
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JP2021046739A (en) * 2019-09-19 2021-03-25 日鉄エンジニアリング株式会社 Truss structure nd reinforcement method

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