JP6585528B2 - Reinforcing structure and reinforcing method - Google Patents

Reinforcing structure and reinforcing method Download PDF

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JP6585528B2
JP6585528B2 JP2016050860A JP2016050860A JP6585528B2 JP 6585528 B2 JP6585528 B2 JP 6585528B2 JP 2016050860 A JP2016050860 A JP 2016050860A JP 2016050860 A JP2016050860 A JP 2016050860A JP 6585528 B2 JP6585528 B2 JP 6585528B2
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高橋　新一
新一 高橋
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Kajima Corp
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Description

本発明は、既存の柱及び梁を補強する補強構造及び補強方法に関する。   The present invention relates to a reinforcing structure and a reinforcing method for reinforcing existing columns and beams.

耐震等の目的で既存の柱及び梁を補強する技術としては種々のものが知られている。特開２０１３−２４１８１５号公報には、既存の建物をブレースを用いて補強する補強構造が記載されている。この補強構造は、２本の柱のうちの一方の柱の下側部分と、他方の柱の上側部分と、のそれぞれに接合される２つの接合部材を備える。ブレースは、上記２つの接合部材の間で延びるように斜めに取り付けられる。   Various techniques for reinforcing existing columns and beams for the purpose of earthquake resistance and the like are known. Japanese Unexamined Patent Application Publication No. 2013-241815 describes a reinforcing structure that reinforces an existing building using braces. This reinforcing structure includes two joining members joined to each of a lower part of one of the two pillars and an upper part of the other pillar. The brace is attached obliquely so as to extend between the two joining members.

上記の接合部材は、ブレースの両端を柱及び梁に接合する。また、この接合部材は、柱を囲んだ状態で接合される一対の半割り鋼管と、各半割り鋼管の上端に溶接されると共に梁に固定される水平プレートとを備えている。半割り鋼管と水平プレートは側面視Ｌ字状となっており、このＬ字部分の内側にガセットプレート（垂直プレート）が溶接される。このガセットプレートに上記ブレースの両端が接合される。   Said joining member joins the both ends of a brace to a pillar and a beam. Further, the joining member includes a pair of half steel pipes joined in a state of surrounding the columns, and a horizontal plate welded to the upper ends of the half steel pipes and fixed to the beam. The half steel pipe and the horizontal plate are L-shaped in a side view, and a gusset plate (vertical plate) is welded to the inside of the L-shaped portion. Both ends of the brace are joined to the gusset plate.

特開２０１３−２４１８１５号公報JP2013-241815A

前述した補強構造では、ブレースの両端に位置するガセットプレート等が溶接によって接合される。ここで、溶接によって柱及び梁を補強する作業は、安全面で問題となりやすく、特に建物の屋内で補強作業を行う現場では溶接作業を避けたいという要望がある。また、柱又は梁に対する溶接作業、特にプレートをその上側の梁に溶接固定する作業は、溶けた金属が流れる、及び火花が飛び散る等の問題があるため、作業が面倒で煩雑になりやすいという問題も抱えている。   In the reinforcing structure described above, gusset plates and the like located at both ends of the brace are joined by welding. Here, the work of reinforcing columns and beams by welding tends to be a problem in terms of safety, and there is a demand for avoiding the welding work especially at the site where the reinforcement work is performed indoors in a building. Also, welding work on columns or beams, especially work that welds and fixes a plate to the upper beam, has problems such as molten metal flowing and sparks scattered, which makes the work cumbersome and complicated. Also have.

本発明は、補強の作業を容易に行うことができる補強構造及び補強方法を提供することを目的とする。   An object of this invention is to provide the reinforcement structure and the reinforcement method which can perform the operation | work of reinforcement easily.

本発明に係る補強構造は、既存の柱及び梁を補強する補強構造であって、柱及び梁のそれぞれには、柱及び梁の長手方向に交差する方向に貫通する貫通孔が形成されており、柱に形成された貫通孔、及び梁に形成された貫通孔のそれぞれに挿通される挿通部材と、挿通部材に固定された状態で柱に沿って延在する柱補強部と、挿通部材に固定された状態で梁に沿って延在する梁補強部と、を備え、柱補強部及び梁補強部のそれぞれは、挿通部材の挿通方向に平行な平面に沿って延びるウェブ部と、ウェブ部に交差する方向に延在するフランジ部と、を有する。   The reinforcing structure according to the present invention is a reinforcing structure that reinforces an existing column and beam, and each of the column and beam has a through-hole penetrating in a direction intersecting the longitudinal direction of the column and beam. An insertion member inserted into each of the through-hole formed in the column and the through-hole formed in the beam, a column reinforcing portion extending along the column in a state of being fixed to the insertion member, and an insertion member A beam reinforcing portion that extends along the beam in a fixed state, and each of the column reinforcing portion and the beam reinforcing portion extends along a plane parallel to the insertion direction of the insertion member, and the web portion And a flange portion extending in a direction intersecting with.

この補強構造では、柱及び梁の貫通孔に挿通部材が挿通され、この挿通部材に柱接合部及び梁接合部のそれぞれが固定される。従って、貫通孔に挿通部材を挿通させて、挿通部材に柱補強部及び梁補強部を固定させて補強作業を行うことができるので、補強作業を容易に行うことができる。また、柱補強部及び梁補強部は、柱及び梁に沿って設けられると共に、ウェブ部とフランジ部とを備えている。従って、剪断及び曲げの両方に対する耐力を高めた補強構造とすることができる。更に、既存の柱及び梁に形成された貫通孔に挿通部材を挿通させているので、当該貫通孔を補強のために有効利用することができる。   In this reinforcing structure, the insertion member is inserted into the through hole of the column and the beam, and each of the column joint portion and the beam joint portion is fixed to the insertion member. Therefore, since the insertion member can be inserted into the through hole and the column reinforcing portion and the beam reinforcing portion can be fixed to the insertion member, the reinforcement operation can be performed, so that the reinforcement operation can be easily performed. In addition, the column reinforcing portion and the beam reinforcing portion are provided along the column and the beam, and include a web portion and a flange portion. Therefore, it can be set as the reinforcement structure which raised the yield strength with respect to both shear and a bending. Furthermore, since the insertion member is inserted through the through holes formed in the existing columns and beams, the through holes can be effectively used for reinforcement.

また、柱補強部及び梁補強部のそれぞれは、ウェブ部及びフランジ部を備えたＴ形鋼であってもよい。この場合、柱の両側に柱補強部を配置した状態において、２つの柱補強部と柱とを長手方向に直交する面で切断したときの断面はＨ形に形成される。梁の両側に梁補強部を配置した場合も同様である。このように断面がＨ形に形成された補強構造は、Ｈ形鋼と同様に、ねじれ及び座屈への耐性が高められた構造となっており、耐力上の性状が優れている。従って、既存の柱及び梁の補強をより強固に行うことができる。   Further, each of the column reinforcing portion and the beam reinforcing portion may be a T-shaped steel provided with a web portion and a flange portion. In this case, in a state where the column reinforcing portions are arranged on both sides of the column, the cross section when the two column reinforcing portions and the column are cut by a plane orthogonal to the longitudinal direction is formed in an H shape. The same applies when the beam reinforcements are arranged on both sides of the beam. The reinforcing structure having the H-shaped cross section as described above has a structure in which resistance to torsion and buckling is enhanced as in the case of H-shaped steel, and is excellent in strength properties. Therefore, the existing columns and beams can be reinforced more firmly.

また、柱補強部と梁補強部とは予め一体となっており、柱補強部と梁補強部との交差部に、ブレース材を接合させるためのガセット部が予め固定されていてもよい。この場合、柱補強部及び梁補強部が予め一体であると共に予めガセット部が固定された補強構造を現場に持ち込むことができる。従って、現場におけるガセット部の溶接固定が不要な補強構造とすることができる。また、現場では、柱補強部と梁補強部が予め一体となった補強構造を組み立てることによって補強作業を行えるので、補強作業を一層容易に行うことができる。   In addition, the column reinforcing portion and the beam reinforcing portion may be integrated in advance, and a gusset portion for joining the brace material may be fixed in advance at an intersection between the column reinforcing portion and the beam reinforcing portion. In this case, a reinforcing structure in which the column reinforcing portion and the beam reinforcing portion are integrated in advance and the gusset portion is fixed in advance can be brought into the field. Therefore, it can be set as the reinforcement structure which does not require welding fixation of the gusset part in the field. In addition, in the field, the reinforcement work can be performed by assembling a reinforcement structure in which the column reinforcement part and the beam reinforcement part are integrated in advance, so that the reinforcement work can be performed more easily.

本発明に係る補強方法は、既存の柱及び梁を補強する補強方法であって、柱及び梁のそれぞれに形成された貫通孔のそれぞれに挿通部材を挿通させる工程と、挿通部材における挿通方向の端部に柱補強部を固定して柱補強部を柱に沿って延在するように配置すると共に、挿通部材における挿通方向の端部に梁補強部を固定して梁補強部を梁に沿って延在するように配置する工程と、柱補強部と梁補強部との交差部に予め固定されたガセット部にブレース材を接合させる工程と、を備える。   The reinforcing method according to the present invention is a reinforcing method for reinforcing an existing column and beam, the step of inserting an insertion member into each of the through holes formed in each of the column and beam, and the insertion direction of the insertion member. The column reinforcement is fixed to the end and the column reinforcement is arranged to extend along the column, and the beam reinforcement is fixed to the end of the insertion member in the insertion direction so that the beam reinforcement extends along the beam. And a step of joining the brace material to a gusset portion fixed in advance to the intersection of the column reinforcement portion and the beam reinforcement portion.

この補強方法では、柱及び梁の貫通孔のそれぞれに挿通部材を挿通し、この挿通部材の端部に柱補強部及び梁補強部のそれぞれを固定する。従って、貫通孔に挿通部材を挿通させると共に、柱補強部及び梁補強部のそれぞれを挿通部材に固定させて補強作業を行うので、補強作業を容易に行うことができる。また、既存の柱及び梁に形成された貫通孔に挿通部材を挿通させているので、既存の柱及び梁の貫通孔を補強のために有効利用することができる。   In this reinforcing method, an insertion member is inserted into each of the through holes of the column and the beam, and each of the column reinforcement portion and the beam reinforcement portion is fixed to an end portion of the insertion member. Therefore, since the insertion member is inserted into the through hole and the column reinforcing portion and the beam reinforcing portion are fixed to the insertion member to perform the reinforcing operation, the reinforcing operation can be easily performed. Further, since the insertion member is inserted through the through holes formed in the existing columns and beams, the through holes of the existing columns and beams can be effectively used for reinforcement.

本発明によれば、補強の作業を容易に行うことができる。   According to the present invention, the reinforcement work can be easily performed.

実施形態に係る補強構造を示す側面図である。It is a side view which shows the reinforcement structure which concerns on embodiment. 図１の補強構造及び既存柱を矢印IIの方向から見たときの側面図である。FIG. 2 is a side view of the reinforcing structure and existing columns in FIG. 1 when viewed from the direction of arrow II. 図２のIII−III線断面図である。It is the III-III sectional view taken on the line of FIG. （ａ）は柱補強部と梁補強部が一体となった第１補強構造を示す側面図である。（ｂ）は（ａ）のIVB−IVB線断面図である。（ｃ）は第２補強構造を示す側面図である。（ｄ）は（ｃ）のIVD−IVD線断面図である。(A) is a side view which shows the 1st reinforcement structure where the column reinforcement part and the beam reinforcement part were united. (B) is the IVB-IVB sectional view taken on the line of (a). (C) is a side view which shows a 2nd reinforcement structure. (D) is the IVD-IVD sectional view taken on the line of (c). （ａ）は第１補強構造と第２補強構造を接合させた状態を示す側面図である。（ｂ）は（ａ）のVB−VB線断面図である。（ｃ）は（ａ）のVC−VC線断面図である。(A) is a side view which shows the state which joined the 1st reinforcement structure and the 2nd reinforcement structure. (B) is the VB-VB sectional view taken on the line of (a). (C) is the VC-VC sectional view taken on the line (a). （ａ）は補強構造同士を連結させた状態を示す側面図である。（ｂ）は（ａ）のVIB−VIB線断面図である。(A) is a side view which shows the state which connected reinforcement structures. (B) is the VIB-VIB sectional view taken on the line of (a). ブレースが接合された状態の補強構造を示す側面図である。It is a side view which shows the reinforcement structure of the state in which the brace was joined.

以下、図面を参照しながら補強構造及び補強方法の実施形態について説明する。図面の説明において、同一又は相当する要素には同一の符号を付し、重複する説明を省略する。   Hereinafter, embodiments of a reinforcing structure and a reinforcing method will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted.

図１に示されるように、本実施形態に係る補強構造１は、既存の建物Ｓの耐風性を高める補強を行う。建物Ｓは、既存の間柱である複数のラチス柱２、及び既存の梁である複数のラチス梁３を備えており、複数のラチス柱２及び複数のラチス梁３は、例えば建物Ｓの内部に設けられている。また、複数のラチス柱２は躯体４の上部に立設されている。補強構造１は、複数のラチス柱２及び複数のラチス梁３によって構成された面における面外方向（図１の紙面の面外方向）の撓みを抑えるために設けられる。   As shown in FIG. 1, the reinforcing structure 1 according to the present embodiment performs reinforcement to improve the wind resistance of an existing building S. The building S includes a plurality of lattice pillars 2 that are existing studs and a plurality of lattice beams 3 that are existing beams. The plurality of lattice pillars 2 and the plurality of lattice beams 3 are provided inside the building S, for example. Is provided. The plurality of lattice pillars 2 are erected on the upper portion of the housing 4. The reinforcing structure 1 is provided in order to suppress bending in the out-of-plane direction (out-of-plane direction of the paper in FIG. 1) on the surface formed by the plurality of lattice pillars 2 and the plurality of lattice beams 3.

補強構造１は、ラチス柱２とラチス梁３の一部とを補強するコの字状の第１補強構造１０と、２つの第１補強構造１０の間でラチス梁３を補強する第２補強構造２０と、矩形状に形成された補強構造１で対角線上に延びるブレース材３０と、躯体４の上部に固定された固定部４０とを備えている。   The reinforcing structure 1 includes a U-shaped first reinforcing structure 10 that reinforces the lattice pillar 2 and a part of the lattice beam 3, and a second reinforcement that reinforces the lattice beam 3 between the two first reinforcing structures 10. The structure 20, the brace material 30 extending diagonally with the reinforcing structure 1 formed in a rectangular shape, and a fixing portion 40 fixed to the upper portion of the housing 4 are provided.

第１補強構造１０は、ラチス柱２を補強する柱補強部１１と、ラチス梁３を補強する梁補強部１２と、躯体４の上部に固定される固定部１６とを有する。図２及び図３に示されるように、ラチス柱２は、互いに平行に延在する２本の弦材２ａと、２本の弦材２ａの間で斜めに延在する腹材２ｂとを備えている。ラチス梁３も、ラチス柱２と同様、弦材と腹材とを備えている。   The first reinforcing structure 10 includes a column reinforcing portion 11 that reinforces the lattice column 2, a beam reinforcing portion 12 that reinforces the lattice beam 3, and a fixing portion 16 that is fixed to the upper portion of the housing 4. As shown in FIGS. 2 and 3, the lattice column 2 includes two string members 2a extending in parallel to each other and an abdominal member 2b extending obliquely between the two string members 2a. ing. The lattice beam 3 is also provided with a chord material and an abdominal material, like the lattice column 2.

柱補強部１１は、複数の腹材２ｂの間に形成された隙間Ａに挿通される２枚のスプライスプレート１１Ａ（挿通部材）と、スプライスプレート１１Ａにおける挿通方向Ｄの両側に固定された状態でラチス柱２を挟み込む補強部材１１Ｂとを備える。隙間Ａは、ラチス柱２及びラチス梁３のそれぞれに形成された貫通孔であり、ラチス柱２及びラチス梁３の長手方向に交差する方向に貫通している。   The column reinforcing portion 11 is fixed to both sides of the two splice plates 11A (insertion members) inserted through the gaps A formed between the plurality of abdominal materials 2b and the insertion direction D of the splice plate 11A. And a reinforcing member 11B that sandwiches the lattice pillar 2 therebetween. The gap A is a through hole formed in each of the lattice column 2 and the lattice beam 3 and penetrates in a direction intersecting with the longitudinal direction of the lattice column 2 and the lattice beam 3.

スプライスプレート１１Ａは、ラチス柱２の長手方向に沿った複数の位置に固定されている。補強部材１１Ｂは、挿通方向Ｄに延びると共にスプライスプレート１１Ａが固定されるウェブ部１１ａと、ウェブ部１１ａに交差する方向に延びるフランジ部１１ｂとを有する。ウェブ部１１ａは、ラチス柱２から離れる方向（挿通方向Ｄ）に平行な平面に沿って延びており、フランジ部１１ｂは、ウェブ部１１ａの外側の端部でウェブ部１１ａの直交方向に延在している。補強部材１１Ｂは、ウェブ部１１ａ及びフランジ部１１ｂを備えたＴ形鋼（カットティー）である。２つの補強部材１１Ｂは、各ウェブ部１１ａが２枚のスプライスプレート１１Ａに挟まれた状態でスプライスプレート１１Ａにボルト１３及びナット１４で接合されることにより、スプライスプレート１１Ａに固定される。   The splice plate 11 </ b> A is fixed at a plurality of positions along the longitudinal direction of the lattice pillar 2. The reinforcing member 11B includes a web portion 11a that extends in the insertion direction D and to which the splice plate 11A is fixed, and a flange portion 11b that extends in a direction intersecting the web portion 11a. The web part 11a extends along a plane parallel to the direction away from the lattice column 2 (insertion direction D), and the flange part 11b extends in the direction perpendicular to the web part 11a at the outer end of the web part 11a. is doing. The reinforcing member 11B is a T-shaped steel (cut tee) provided with a web portion 11a and a flange portion 11b. The two reinforcing members 11B are fixed to the splice plate 11A by being joined to the splice plate 11A with bolts 13 and nuts 14 in a state where each web portion 11a is sandwiched between the two splice plates 11A.

梁補強部１２は、柱補強部１１と同様、ラチス梁３に形成された隙間Ａに挿通されるスプライスプレート１１Ａと、ラチス梁３を挟み込む補強部材１１Ｂとを備える。第２補強構造２０は、梁補強部１２と同様の構成を備えている。   Similar to the column reinforcing portion 11, the beam reinforcing portion 12 includes a splice plate 11 </ b> A that is inserted into a gap A formed in the lattice beam 3 and a reinforcing member 11 </ b> B that sandwiches the lattice beam 3. The second reinforcing structure 20 has the same configuration as the beam reinforcing portion 12.

図４に示されるように、固定部１６は、躯体４にアンカーボルトによって固定されるフランジ部１６ａと、フランジ部１６ａから上方に延びるウェブ部１６ｂとを備える。固定部１６は、フランジ部１６ａ及びウェブ部１６ｂを備えたＴ形鋼である。図１に示される固定部４０は、固定部１６の構造と同様の構成を備えている。   As shown in FIG. 4, the fixing portion 16 includes a flange portion 16 a that is fixed to the housing 4 by an anchor bolt, and a web portion 16 b that extends upward from the flange portion 16 a. The fixing portion 16 is a T-shaped steel including a flange portion 16a and a web portion 16b. The fixing part 40 shown in FIG. 1 has the same configuration as the structure of the fixing part 16.

図１に示されるように、柱補強部１１と梁補強部１２の交差部には、ガセット部１５が固定されている。ブレース材３０は、４本の棒状部材３１と、４本の棒状部材３１を連結する継手部材３２とを備える。各棒状部材３１の一端は各ガセット部１５に固定されており、各棒状部材３１の他端は継手部材３２に固定されている。   As shown in FIG. 1, a gusset portion 15 is fixed to the intersection of the column reinforcement portion 11 and the beam reinforcement portion 12. The brace material 30 includes four rod-shaped members 31 and a joint member 32 that connects the four rod-shaped members 31. One end of each bar-shaped member 31 is fixed to each gusset portion 15, and the other end of each bar-shaped member 31 is fixed to the joint member 32.

以下では、補強構造１を用いて、既存のラチス柱２及びラチス梁３を補強する補強方法について図４〜図７を参照しながら説明する。図４及び図５に示す作業は、現場である建物Ｓに持ち込まれる前に予め行われる。まず、図４に示されるように、柱補強部１１、梁補強部１２及び固定部１６が一体となった第１補強構造１０と、第２補強構造２０とを用意する。コの字状に形成される第１補強構造１０において、柱補強部１１及び梁補強部１２ではフランジ部１１ｂが内側を向いており、固定部１６ではフランジ部１６ａが外側を向いている。また、第２補強構造２０では、フランジ部１１ｂは下側を向いている。   Below, the reinforcement method which reinforces the existing lattice pillar 2 and the lattice beam 3 using the reinforcement structure 1 is demonstrated, referring FIGS. 4-7. The work shown in FIGS. 4 and 5 is performed in advance before being brought into the building S which is the site. First, as shown in FIG. 4, a first reinforcing structure 10 and a second reinforcing structure 20 in which the column reinforcing portion 11, the beam reinforcing portion 12, and the fixing portion 16 are integrated are prepared. In the first reinforcing structure 10 formed in a U-shape, the flange portion 11b faces the inside in the column reinforcing portion 11 and the beam reinforcing portion 12, and the flange portion 16a faces the outside in the fixing portion 16. Moreover, in the 2nd reinforcement structure 20, the flange part 11b has faced the lower side.

次に、図５に示されるように、第１補強構造１０、第２補強構造２０及び固定部４０をスプライスプレート５０で接合し、一対の第１補強構造１０、第２補強構造２０及び固定部４０を備えた枠状ユニットＦを形成する。また、枠状ユニットＦの四隅の内側にガセット部１５を固定させる。なお、このガセット部１５の固定は、図４（ａ）に示されるコの字状の第１補強構造１０に対して予め行ってもよい。以上の作業は、補強構造１を建物Ｓに持ち込む前に予め行われる。   Next, as shown in FIG. 5, the first reinforcing structure 10, the second reinforcing structure 20, and the fixing portion 40 are joined by the splice plate 50, and a pair of the first reinforcing structure 10, the second reinforcing structure 20, and the fixing portion are joined. A frame-shaped unit F having 40 is formed. Further, the gusset portions 15 are fixed inside the four corners of the frame unit F. Note that the gusset portion 15 may be fixed to the U-shaped first reinforcing structure 10 shown in FIG. 4A in advance. The above operations are performed in advance before the reinforcing structure 1 is brought into the building S.

補強構造１を建物Ｓに持ち込んだ後に行われる作業を図６及び図７に示している。図６及び図７では、既存のラチス柱２及びラチス梁３の図示を省略すると共に、一部の図示を簡略化している。図６（ａ）及び図６（ｂ）に示されるように、枠状ユニットＦをラチス柱２及びラチス梁３のそれぞれに沿うように配置する。そして、ラチス柱２に形成された隙間Ａにスプライスプレート１１Ａを挿通し（挿通部材を挿通させる工程）、一対のウェブ部１１ａをスプライスプレート１１Ａにそれぞれ固定させることにより、複数の枠状ユニットＦを水平方向に連結させる。また、ラチス梁３に形成された隙間Ａにスプライスプレート１１Ａを挿通し、一対のウェブ部１１ａをスプライスプレート１１Ａに固定させることにより、複数の枠状ユニットＦを鉛直方向に連結させる（柱補強部及び梁補強部を配置する工程）。   The work performed after bringing the reinforcing structure 1 into the building S is shown in FIGS. In FIGS. 6 and 7, the illustration of the existing lattice pillar 2 and the lattice beam 3 is omitted and a part of the illustration is simplified. As shown in FIGS. 6A and 6B, the frame-shaped unit F is disposed along each of the lattice pillar 2 and the lattice beam 3. Then, by inserting the splice plate 11A through the gap A formed in the lattice pillar 2 (step of inserting the insertion member) and fixing the pair of web portions 11a to the splice plate 11A, the plurality of frame units F are fixed. Connect horizontally. Further, by inserting the splice plate 11A through the gap A formed in the lattice beam 3 and fixing the pair of web portions 11a to the splice plate 11A, the plurality of frame-like units F are connected in the vertical direction (column reinforcement portion). And a step of arranging the beam reinforcing portion).

続いて、図７に示されるように、予め固定したガセット部１５にブレース材３０を固定させる。このとき、各ガセット部１５に棒状部材３１の一端を接合し、棒状部材３１の他端を継手部材３２に接合する（ブレース材を接合させる工程）。以上のように、枠状ユニットＦのそれぞれのガセット部１５にブレース材３０を固定させることにより、図１に示される補強構造１が完成する。   Subsequently, as shown in FIG. 7, the brace material 30 is fixed to the gusset portion 15 fixed in advance. At this time, one end of the rod-like member 31 is joined to each gusset portion 15 and the other end of the rod-like member 31 is joined to the joint member 32 (step of joining the brace material). As described above, by fixing the brace material 30 to each gusset portion 15 of the frame-shaped unit F, the reinforcing structure 1 shown in FIG. 1 is completed.

次に、本実施形態に係る補強構造１及び補強方法の作用効果について説明する。   Next, the effects of the reinforcing structure 1 and the reinforcing method according to the present embodiment will be described.

本実施形態の補強構造１及び補強方法では、図３に示されるように、ラチス柱２及びラチス梁３の隙間Ａにスプライスプレート１１Ａが挿通され、このスプライスプレート１１Ａの両側にラチス柱２及びラチス梁３を挟み込んで補強する補強部材１１Ｂがボルト１３及びナット１４によって固定される。従って、隙間Ａにスプライスプレート１１Ａを挿通させ、スプライスプレート１１Ａの両側に補強部材１１Ｂをボルト１３及びナット１４で固定させて補強作業が行われるので、溶接作業を不要とすることができる。   In the reinforcing structure 1 and the reinforcing method of the present embodiment, as shown in FIG. 3, the splice plate 11A is inserted through the gap A between the lattice pillar 2 and the lattice beam 3, and the lattice pillar 2 and the lattice are formed on both sides of the splice plate 11A. A reinforcing member 11B that sandwiches and reinforces the beam 3 is fixed by a bolt 13 and a nut 14. Therefore, since the splicing plate 11A is inserted into the gap A and the reinforcing member 11B is fixed on both sides of the splicing plate 11A with the bolts 13 and the nuts 14, the reinforcing work is performed, so that the welding work can be eliminated.

よって、溶接作業を無くすことができるので、作業の安全性を向上させることができると共に補強作業を容易に行うことができる。また、補強部材１１Ｂは、ラチス柱２及びラチス梁３の両側に位置すると共に、ウェブ部１１ａとフランジ部１１ｂとを備えている。従って、剪断及び曲げの両方に対する耐力を高めた補強部材１１Ｂとすることができる。更に、既存のラチス柱２及びラチス梁３に形成された隙間Ａにスプライスプレート１１Ａを挿通させているので、当該隙間Ａを補強のために有効利用することができる。   Therefore, since welding work can be eliminated, work safety can be improved and reinforcement work can be easily performed. The reinforcing member 11B is located on both sides of the lattice pillar 2 and the lattice beam 3 and includes a web portion 11a and a flange portion 11b. Therefore, it can be set as the reinforcement member 11B which raised the yield strength with respect to both shear and a bending. Furthermore, since the splice plate 11A is inserted into the gap A formed in the existing lattice pillar 2 and the lattice beam 3, the gap A can be effectively used for reinforcement.

また、補強部材１１Ｂは、ウェブ部１１ａ及びフランジ部１１ｂを備えたＴ形鋼である。従って、ラチス柱２及びラチス梁３を、それらの長手方向に直交する面で切断したときの断面はＨ形に形成される。このように断面がＨ形に形成された補強部材１１Ｂは、Ｈ形鋼と同様に、ねじれ及び座屈への耐性が高められた構造となっており、耐力上の性状が優れている。従って、既存のラチス柱２及びラチス梁３の補強をより強固に行うことができる。   The reinforcing member 11B is a T-shaped steel provided with a web portion 11a and a flange portion 11b. Therefore, the cross section when the lattice pillar 2 and the lattice beam 3 are cut along a plane perpendicular to the longitudinal direction thereof is formed in an H shape. In this way, the reinforcing member 11B having a H-shaped cross section has a structure in which resistance to torsion and buckling is increased, as in the case of H-shaped steel, and has excellent strength properties. Therefore, the existing lattice pillar 2 and the lattice beam 3 can be reinforced more firmly.

また、補強構造１は、補強部材１１Ｂによってラチス柱２を補強する柱補強部１１と、補強部材１１Ｂによってラチス梁３を補強する梁補強部１２と、を備え、柱補強部１１と梁補強部１２とは予め一体となっており、柱補強部１１と梁補強部１２との間にガセット部１５が予め固定されている。よって、柱補強部１１及び梁補強部１２が予め一体であると共に予めガセット部１５が固定された補強部材１１Ｂ（枠状ユニットＦ）を現場に持ち込むことができる。従って、現場におけるガセット部の溶接固定が不要な補強構造１とすることができる。また、現場では、柱補強部１１と梁補強部１２が予め一体となった第１補強構造１０（枠状ユニットＦ）を組み立てることによって補強作業を行えるので、補強作業を一層容易に行うことができる。   The reinforcing structure 1 includes a column reinforcing portion 11 that reinforces the lattice column 2 with the reinforcing member 11B, and a beam reinforcing portion 12 that reinforces the lattice beam 3 with the reinforcing member 11B, and the column reinforcing portion 11 and the beam reinforcing portion. The gusset portion 15 is fixed in advance between the column reinforcement portion 11 and the beam reinforcement portion 12. Therefore, the reinforcing member 11B (frame-shaped unit F) in which the column reinforcing portion 11 and the beam reinforcing portion 12 are integrated in advance and the gusset portion 15 is fixed in advance can be brought into the field. Therefore, it can be set as the reinforcement structure 1 which does not require the welding fixation of the gusset part in the field. In addition, since the reinforcement work can be performed by assembling the first reinforcement structure 10 (the frame-shaped unit F) in which the column reinforcement part 11 and the beam reinforcement part 12 are integrated in advance, the reinforcement work can be performed more easily. it can.

以上、本発明の各実施形態について説明したが、本発明は、前述の各実施形態に限定されるものではなく、各請求項に記載した要旨を変更しない範囲で変形し、又は他のものに適用したものであってもよい。すなわち、本発明は、各請求項の要旨を変更しない範囲で種々の変形が可能である。   As mentioned above, although each embodiment of the present invention was described, the present invention is not limited to each above-mentioned embodiment, changes in the range which does not change the gist described in each claim, or changes to others. It may be applied. That is, the present invention can be variously modified without changing the gist of each claim.

例えば、前述の実施形態では、既存の柱及び梁のそれぞれがラチス柱２及びラチス梁３である例について説明したが、既存の柱及び梁は、ラチス構造とは異なる構造を有していてもよい。   For example, in the above-described embodiment, an example in which the existing columns and beams are the lattice column 2 and the lattice beam 3 has been described, but the existing columns and beams may have a structure different from the lattice structure. Good.

また、前述の実施形態では、ウェブ部１１ａ及びフランジ部１１ｂを備えたＴ形鋼である補強部材１１Ｂについて説明したが、この補強部材１１Ｂとは異なる形状の補強部材であってもよい。例えば、補強部材１１Ｂに代えて、Ｌ字形の補強部材を用いてもよい。   In the above-described embodiment, the reinforcing member 11B that is a T-shaped steel including the web portion 11a and the flange portion 11b has been described. However, a reinforcing member having a shape different from that of the reinforcing member 11B may be used. For example, instead of the reinforcing member 11B, an L-shaped reinforcing member may be used.

また、前述の実施形態では、既存の建物Ｓの耐風性を高める補強を行う補強構造１について説明したが、耐風性を高める補強以外の補強を行う補強構造であってもよい。更に、既存の建物Ｓの種類については特に限定されず、本発明に係る補強構造及び補強方法は、種々の柱及び梁に適用させることができる。   In the above-described embodiment, the reinforcing structure 1 that performs reinforcement for improving the wind resistance of the existing building S has been described. However, a reinforcement structure that performs reinforcement other than the reinforcement for improving the wind resistance may be used. Furthermore, it does not specifically limit about the kind of the existing building S, The reinforcement structure and reinforcement method which concern on this invention can be applied to various pillars and beams.

１…補強構造、２…ラチス柱、２ａ…弦材、２ｂ…腹材、３…ラチス梁、４…躯体、１０…第１補強構造、１１…柱補強部、１１Ａ…スプライスプレート（挿通部材）、１１Ｂ…補強部材、１１ａ…ウェブ部、１１ｂ…フランジ部、１２…梁補強部、１３…ボルト、１４…ナット、１５…ガセット部、１６…固定部、１６ａ…フランジ部、１６ｂ…ウェブ部、２０…第２補強構造、３０…ブレース材、３１…棒状部材、３２…継手部材、４０…固定部、５０…スプライスプレート、Ｄ…挿通方向、Ｆ…枠状ユニット、Ｓ…建物。 DESCRIPTION OF SYMBOLS 1 ... Reinforcement structure, 2 ... Lattice pillar, 2a ... String material, 2b ... Abdomen, 3 ... Lattice beam, 4 ... Housing, 10 ... 1st reinforcement structure, 11 ... Column reinforcement part, 11A ... Splice plate (insertion member) 11B ... reinforcing member, 11a ... web portion, 11b ... flange portion, 12 ... beam reinforcing portion, 13 ... bolt, 14 ... nut, 15 ... gusset portion, 16 ... fixing portion, 16a ... flange portion, 16b ... web portion, DESCRIPTION OF SYMBOLS 20 ... 2nd reinforcement structure, 30 ... Brace material, 31 ... Bar-shaped member, 32 ... Joint member, 40 ... Fixing part, 50 ... Splice plate, D ... Insertion direction, F ... Frame-shaped unit, S ... Building.

Claims (4)

既存の柱及び梁を補強する補強構造であって、
前記柱及び梁のそれぞれには、前記柱及び梁の長手方向に交差する方向に貫通する貫通孔が形成されており、
前記柱に形成された前記貫通孔、及び前記梁に形成された前記貫通孔のそれぞれに挿通される挿通部材と、
前記挿通部材に固定された状態で前記柱に沿って延在する柱補強部と、
前記挿通部材に固定された状態で前記梁に沿って延在する梁補強部と、を備え、
前記柱補強部及び前記梁補強部のそれぞれは、前記挿通部材の挿通方向に平行な平面に沿って延びるウェブ部と、前記ウェブ部に交差する方向に延在するフランジ部と、
を有する補強構造。 A reinforcing structure for reinforcing existing columns and beams,
Each of the pillars and beams has a through-hole penetrating in a direction intersecting with the longitudinal direction of the pillars and beams,
An insertion member inserted into each of the through hole formed in the column and the through hole formed in the beam;
A column reinforcement portion extending along the column in a state of being fixed to the insertion member;
A beam reinforcement portion extending along the beam in a state of being fixed to the insertion member,
Each of the column reinforcing portion and the beam reinforcing portion includes a web portion extending along a plane parallel to the insertion direction of the insertion member, a flange portion extending in a direction intersecting the web portion,
Reinforcing structure having. 前記柱補強部及び前記梁補強部のそれぞれは、前記ウェブ部及び前記フランジ部を備えたＴ形鋼である、
請求項１に記載の補強構造。 Each of the column reinforcing part and the beam reinforcing part is a T-shaped steel provided with the web part and the flange part.
The reinforcing structure according to claim 1. 前記柱補強部と前記梁補強部とは予め一体となっており、
前記柱補強部と前記梁補強部との交差部に、ブレース材を接合させるためのガセット部が予め固定されている、
請求項１又は２に記載の補強構造。 The column reinforcing portion and the beam reinforcing portion are integrated in advance,
A gusset portion for joining a brace material is fixed in advance to an intersection between the column reinforcement portion and the beam reinforcement portion,
The reinforcing structure according to claim 1 or 2. 既存の柱及び梁を補強する補強方法であって、
前記柱及び梁のそれぞれに形成された貫通孔のそれぞれに挿通部材を挿通させる工程と、
前記挿通部材における挿通方向の端部に柱補強部を固定して前記柱補強部を前記柱に沿って延在するように配置すると共に、前記挿通部材における挿通方向の端部に梁補強部を固定して前記梁補強部を前記梁に沿って延在するように配置する工程と、
前記柱補強部と前記梁補強部との交差部に予め固定されたガセット部にブレース材を接合させる工程と、
を備えた補強方法。 A reinforcing method for reinforcing existing columns and beams,
Inserting an insertion member into each of the through holes formed in each of the columns and beams;
A column reinforcing portion is fixed to an end portion in the insertion direction of the insertion member and the column reinforcement portion is disposed so as to extend along the column, and a beam reinforcement portion is provided at an end portion of the insertion member in the insertion direction. Fixing and arranging the beam reinforcing portion so as to extend along the beam;
Bonding a brace material to a gusset portion fixed in advance at an intersection between the column reinforcement portion and the beam reinforcement portion;
Reinforcing method with.
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