JP2019070237A - Reinforcing structure of diagonal member, buckling preventing member of diagonal member, and reinforcing method for diagonal member - Google Patents
Reinforcing structure of diagonal member, buckling preventing member of diagonal member, and reinforcing method for diagonal member Download PDFInfo
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本発明は、柱または梁に対して斜めに配置される方杖またはブレースなどの斜材の補強構造、座屈防止部材およびその補強方法等に関するものである。 The present invention relates to a reinforcing structure for a diagonal member such as a cane or a brace disposed diagonally to a column or a beam, a buckling prevention member, a reinforcing method therefor, and the like.
従来、柱と梁からなる構造体に対して斜めに、方杖やブレースのような斜材を固定して、構造体を補強する方法がある。このような斜材を配置することで、構造体の剛性を高めることができる。 Conventionally, there is a method of reinforcing a structure by fixing a diagonal member such as a cane or a brace obliquely to the structure of a column and a beam. By arranging such a diagonal member, the rigidity of the structure can be enhanced.
近年、大きな地震の発生などを考慮した構造体の耐震補強が進められている。この際、従来の斜材は、引張力に対しては十分な強度を発揮するが、所定以上の圧縮力を受けると座屈する恐れがある。したがって、圧縮力に対してもより強い斜材が要求される。しかし、斜材を全て交換するとなると、コストや作業工数を要する。このため、既存の斜材を補強する方法が求められている。 In recent years, seismic reinforcement of structures has been promoted in consideration of the occurrence of large earthquakes and the like. Under the present circumstances, although the conventional diagonal material exhibits sufficient intensity | strength with respect to a tensile force, there exists a possibility that it may buckle when receiving predetermined compressive force or more. Therefore, a stronger diagonal material is required also for the compression force. However, when all the diagonal members are to be replaced, cost and man-hours are required. Therefore, there is a need for a method of reinforcing existing diagonal members.
このような斜材の補強としては、ブレースの全周を覆う外側拘束部材をブレースの全長にわたって固定する方法がある（特許文献１）。 As such reinforcement of the diagonal member, there is a method of fixing an outer restraint member covering the entire circumference of the brace over the entire length of the brace (Patent Document 1).
しかし、ブレースの全周を覆う外側拘束部材を用いると、使用する部材が多く、取り付け作業も容易ではない。また、ブレースや外側拘束部材の寸法精度などによって、ブレースと外側拘束部材とを前面にわたって確実に密着させることは困難である。しかし、外側拘束部材とブレースとの間に隙間が生じると、ブレースからの力を外側拘束部材で受けることができないため、補強効果を得ることができない。このため、より簡易な構造で、ブレース等を確実に補強することが可能な構造が要求される。 However, if an outer restraint member covering the entire circumference of the brace is used, many members are used, and the mounting operation is not easy. Further, due to the dimensional accuracy of the brace and the outer restraint member, it is difficult to ensure that the brace and the outer restraint member are in close contact over the front surface. However, if a gap is generated between the outer restraint member and the brace, the reinforcing effect can not be obtained because the force from the brace can not be received by the outer restraint member. For this reason, the structure which can reinforce a brace etc. certainly with a simpler structure is required.
本発明は、このような問題に鑑みてなされたもので、作業性に優れ、効率よく斜材を補強することが可能な斜材の補強構造、斜材の座屈防止部材および斜材の補強方法を提供することを目的とする。 The present invention has been made in view of such problems, and is a reinforcement structure of a diagonal material which is excellent in workability and capable of efficiently reinforcing a diagonal material, a buckling prevention member of a diagonal material, and a reinforcement of a diagonal material. Intended to provide a method.
前述した目的を達成するため、第１の発明は、柱または梁に対して斜めに配置される斜材の補強構造であって、前記斜材に沿って配置される補強部材と、前記補強部材を前記斜材に固定する固定金具と、を具備し、前記固定金具は、前記斜材の両側にそれぞれ配置され、前記斜材を挟み込むように連結され、前記補強部材が前記斜材に固定されることを特徴とする斜材の補強構造である。 In order to achieve the above-mentioned object, the first invention is a reinforcement structure for diagonal members arranged diagonally to a column or a beam, and a reinforcement member arranged along the diagonal members, and the reinforcement member A fixing fitting for fixing the oblique member to the diagonal member, the fixing brackets being disposed on both sides of the diagonal member, connected so as to sandwich the diagonal member, and the reinforcing member being fixed to the diagonal member It is a reinforcement structure of a diagonal member characterized by
一対の前記補強部材を具備し、前記固定金具は、それぞれの前記補強部材に固定され、一対の前記補強部材によって前記斜材が挟み込まれて、それぞれの前記補強部材に固定された前記固定金具同士が対向して連結することで、前記補強部材が前記斜材に固定されてもよい。 The fixtures are provided with a pair of reinforcing members, the fixing brackets are fixed to the respective reinforcing members, and the fixing brackets fixed to the respective reinforcing members are sandwiched by the diagonal members by the pair of the reinforcing members. The reinforcing member may be fixed to the diagonal member by opposingly connecting them.
前記補強部材と前記斜材との間に隙間が形成され、前記補強部材の外周から、前記隙間に拘束部材が貫通し、前記拘束部材の先端で前記斜材の外面を押圧することで、前記斜材から前記補強部材に応力が伝達されてもよい。 A gap is formed between the reinforcing member and the diagonal member, and a constraining member penetrates the gap from the outer periphery of the reinforcing member, and the tip of the constraining member presses the outer surface of the diagonal member. Stress may be transmitted from the diagonal member to the reinforcing member.
前記拘束部材は、前記斜材の一方の方向に対して配置されるとともに、前記一方の方向と略直交する方向に対して配置され、前記斜材の異なる方向に対して、前記斜材の外面を押圧してもよい。 The restraint member is disposed in one direction of the oblique member and disposed in a direction substantially orthogonal to the one direction, and the outer surface of the oblique member in a direction different from the oblique member. May be pressed.
前記拘束部材は、前記斜材の長手方向に所定の間隔で複数個所に配置されてもよい。 The restraint members may be disposed at a plurality of locations at predetermined intervals in the longitudinal direction of the diagonal member.
第１の発明によれば、斜材を挟み込むようにして配置した固定金具の連結によって、補強部材が斜材に固定されるため、構造が簡易であり、作業も容易である。 According to the first aspect of the present invention, the reinforcement member is fixed to the diagonal member by the connection of the fixtures arranged so as to sandwich the diagonal member, so that the structure is simple and the operation is easy.
また、一対の補強部材で斜材を挟み込むように配置することで、確実に斜材を補強することができる。 Further, the diagonal material can be reliably reinforced by arranging the diagonal material so as to be sandwiched by the pair of reinforcing members.
また、補強部材と斜材との間に隙間を形成することで、斜材の寸法誤差や変形などが生じていても、隙間によってこれらを吸収し、確実に補強部材を斜材に取り付けることができる。また、この場合でも、拘束部材によって、斜材から補強部材へ確実に応力が伝達され、補強効果を得ることができる。 In addition, by forming a gap between the reinforcing member and the diagonal member, even if a dimensional error or deformation of the diagonal member occurs, the gap can be absorbed by the gap and the reinforcing member can be securely attached to the diagonal member. it can. Also in this case, the stress is reliably transmitted from the diagonal member to the reinforcing member by the restraint member, and a reinforcing effect can be obtained.
また、拘束部材を異なる２方向に配置することで、斜材を２方向から拘束し、斜材からの応力を確実に補強部材に伝達することができる。 Further, by arranging the constraining members in two different directions, it is possible to constrain the diagonal members from two directions, and to reliably transmit the stress from the diagonal members to the reinforcing member.
また、拘束部材を斜材の長手方向に対して所定の間隔で複数個所に配置することで、斜材の座屈を拘束部材の配置間隔で抑制することができる。 Further, by arranging the constraining members at a plurality of places at predetermined intervals in the longitudinal direction of the diagonal members, it is possible to suppress the buckling of the diagonal members at the arrangement intervals of the constraining members.
第２の発明は、柱または梁に対して斜めに配置される斜材の座屈防止部材であって、補強部材と、前記補強部材に所定の間隔で固定される固定金具と、を具備し、一対の前記補強部材を対向させた際に、それぞれの前記固定金具を連結可能であることを特徴とする斜材の座屈防止部材である。 A second aspect of the present invention is a buckling prevention member for diagonal members disposed diagonally to a column or a beam, comprising: a reinforcing member; and a fixing fitting fixed to the reinforcing member at a predetermined distance. When a pair of said reinforcement members are made to oppose, it is a buckling prevention member of the diagonal material characterized by being able to connect each said fixing bracket.
前記補強部材を貫通する拘束部材を具備し、前記拘束部材を前記補強部材に対してねじ込むことが可能であることが望ましい。 Desirably, a restraining member is provided through the reinforcing member, and the restraining member can be screwed onto the reinforcing member.
第２の発明によれば、作業性に優れ、簡易な構造で効率よく既設の斜材を補強することが可能である。 According to the second aspect of the present invention, it is possible to efficiently reinforce the existing diagonal members with excellent workability and a simple structure.
また、拘束部材を設けることで、補強部材を斜材に容易に取り付けることが可能であるとともに、拘束部材によって確実に斜材から補強部材へ応力が伝達され、補強効果を得ることができる。 Further, by providing the restraining member, it is possible to easily attach the reinforcing member to the oblique member, and stress is reliably transmitted from the oblique member to the reinforcing member by the restraining member, and a reinforcing effect can be obtained.
第３の発明は、柱または梁に対して斜めに配置される既設の斜材の補強方法であって、前記斜材に沿って、固定金具が固定された一対の補強部材を、前記斜材を挟むように配置し、対向する前記固定金具同士を連結して、前記補強部材を前記斜材に固定することを特徴とする斜材の補強方法である。 A third aspect of the present invention is a method of reinforcing an existing diagonal member disposed diagonally to a column or a beam, the pair of reinforcing members having a fixing bracket fixed thereto along the diagonal member, the diagonal members In which the fixing members facing each other are connected, and the reinforcing member is fixed to the oblique member.
前記補強部材を貫通する拘束部材を具備し、前記固定金具同士を連結した後、前記拘束部材を前記補強部材に対してねじ込み、前記拘束部材の先端で前記斜材の外面を押圧することが望ましい。 It is preferable that the restraint member penetrates the reinforcement member, and after the fixing metal fittings are connected, the restraint member is screwed to the reinforcement member to press the outer surface of the oblique member with the tip of the restraint member. .
第３の発明によれば、作業性に優れ、効率よく既設の斜材を補強することが可能なである。 According to the third aspect of the present invention, it is possible to reinforce the existing diagonal members efficiently with excellent workability.
また、拘束部材によって斜材を押圧することで、拘束部材によって確実に斜材から補強部材へ応力が伝達され、補強効果を得ることができる。 Further, by pressing the oblique member by the restraint member, the stress is surely transmitted from the oblique member to the reinforcing member by the restraint member, and a reinforcement effect can be obtained.
本発明によれば、作業性に優れ、効率よく斜材を補強することが可能な斜材の補強構造、斜材の座屈防止部材および斜材の補強方法を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the reinforcement structure of the diagonal material which is excellent in workability | operativity and can reinforce a diagonal material efficiently, the buckling prevention member of a diagonal material, and the reinforcement method of a diagonal material can be provided.
以下、本発明の実施の形態にかかる斜材の補強構造１について説明する。図１は、斜材の補強構造１を示す正面図である。斜材の補強構造１は、柱３と梁５に対して斜めに配置される斜材７の補強構造である。 Hereinafter, the reinforcement structure 1 of the diagonal material according to the embodiment of the present invention will be described. FIG. 1 is a front view showing a reinforcement structure 1 of a diagonal member. The reinforcing structure 1 of the diagonal member is a reinforcing structure of the diagonal member 7 disposed obliquely to the column 3 and the beam 5.
斜材７は、例えば、既設のブレースや方杖である。斜材７は、柱３と梁５に対して斜めに配置されていれば、その配置は図示した例には限られず、例えば、柱３および梁５で形成される矩形の各角部にのみ配置してもよく、下端を柱３ではなく、床または下方の梁５（図示せず）に接合してもよい。 The diagonal member 7 is, for example, an existing brace or a square stick. The arrangement of the diagonal members 7 is not limited to the illustrated example as long as the diagonal members 7 are arranged obliquely with respect to the columns 3 and the beams 5, and for example, only at each corner of a rectangle formed by the columns 3 and the beams 5. It may be arranged and the lower end may be joined to the floor or lower beam 5 (not shown) instead of the column 3.
斜材７の外周部には、座屈防止部材１０が固定される。図２（ａ）は、斜材７に座屈防止部材１０が取り付けられた状態を示す正面図であり、図３（ａ）は、図２（ａ）のＡ−Ａ線断面図、図３（ｂ）は、図２（ａ）のＢ−Ｂ線断面図である。補強部材１１は、斜材７に沿って配置される。すなわち、補強部材１１の軸方向と、斜材７の軸方向とが略一致するように、補強部材１１は、斜材７の外周に配置される。 The buckling prevention member 10 is fixed to the outer peripheral portion of the diagonal member 7. Fig.2 (a) is a front view which shows the state in which the buckling prevention member 10 was attached to the diagonal material 7, FIG.3 (a) is the sectional view on the AA line of FIG.2 (a), FIG. (B) is a BB sectional view taken on the line of FIG. 2 (a). The reinforcing member 11 is disposed along the diagonal member 7. That is, the reinforcing member 11 is disposed on the outer periphery of the diagonal member 7 such that the axial direction of the reinforcing member 11 and the axial direction of the diagonal member 7 substantially coincide with each other.
なお、補強部材１１は、斜材７の長手方向に対して１体であってもよく、分割されていてもよい。例えば、図２（ｂ）に示すように、補強部材１１を長手方向に複数に分割して、補強部材１１同士を連結部材１７によって長手方向に連結してもよい。このようにすることで、例えば、斜材７の長手方向の中間部に他の斜材７ａが接続されるような場合でも、斜材７ａを避けて、補強部材１１を配置することができる。 The reinforcing member 11 may be a single unit or may be divided in the longitudinal direction of the diagonal member 7. For example, as shown in FIG. 2B, the reinforcing members 11 may be divided into a plurality of pieces in the longitudinal direction, and the reinforcing members 11 may be connected in the longitudinal direction by the connecting members 17. By doing this, for example, even when another diagonal member 7a is connected to an intermediate portion in the longitudinal direction of the diagonal member 7, the reinforcing member 11 can be disposed avoiding the diagonal member 7a.
図３（ａ）に示すように、斜材７は、略矩形の断面形状を有する。図示した例では、斜材７は、Ｈ形鋼の上下のフランジ部の端部同士を繋ぐように板が接合されて形成される。なお、斜材７の断面形状は、図示した例には限られず、丸鋼管、角鋼管、Ｈ形鋼、コの字またはＬ字のアングルなど、特に限定されない。 As shown in FIG. 3A, the diagonal member 7 has a substantially rectangular cross-sectional shape. In the illustrated example, the diagonal members 7 are formed by joining the plates so as to connect the end portions of the upper and lower flange portions of the H-shaped steel. The cross-sectional shape of the diagonal member 7 is not limited to the illustrated example, and is not particularly limited, such as a round steel pipe, square steel pipe, H-shaped steel, U-shaped or L-shaped angle.
斜材７の上下には、一対の補強部材１１が配置される。本実施形態では、補強部材１１は、例えばＨ形鋼である。補強部材１１の対向するフランジ部１２の外面には、互いに対称な位置に固定金具１３が接合される。固定金具１３は、補強部材１１を斜材７に固定するための部材である。なお、固定金具１３は、鋳造、鍛造、溶接組立、削り出し加工などの任意の方法で製造することができる。 A pair of reinforcing members 11 is disposed above and below the diagonal member 7. In the present embodiment, the reinforcing member 11 is, for example, an H-shaped steel. The fixtures 13 are joined to the outer surfaces of the opposing flange portions 12 of the reinforcing member 11 at symmetrical positions. The fixing bracket 13 is a member for fixing the reinforcing member 11 to the diagonal member 7. The fixing bracket 13 can be manufactured by any method such as casting, forging, welding, and machining.
固定金具１３は、補強部材１１の長手方向に対して、所定の間隔で、例えば溶接で接合される。固定金具１３は、略Ｌ字形の部材であり、補強部材１１のそれぞれのフランジ部１２に対して互いに逆方向にフランジ状部１４が突出する。固定金具１３のフランジ状部１４には、孔２３が形成される。
The fixing bracket 13 is joined to the longitudinal direction of the reinforcing member 11 at predetermined intervals, for example, by welding. The fixing fitting 13 is a substantially L-shaped member, and the flange-like portions 14 project in mutually opposite directions with respect to the respective flange portions 12 of the reinforcing member 11. A
補強部材１１のウェブ部８を斜材７の上下面に対向するように配置すると、補強部材１１のそれぞれの固定金具１３が、斜材７の両側に配置される。一対の補強部材１１で斜材７を挟み込むと、それぞれの補強部材１１の固定金具１３のフランジ状部１４同士が対向する。この際、対向するそれぞれの固定金具１３のフランジ状部１４に形成された孔２３が略一直線上に配置される。
When the web portions 8 of the reinforcing member 11 are disposed to face the upper and lower surfaces of the diagonal member 7, the fixing brackets 13 of the reinforcing member 11 are disposed on both sides of the diagonal member 7. When the diagonal member 7 is sandwiched between the pair of reinforcing members 11, the flange-like portions 14 of the fixing metal fittings 13 of the respective reinforcing members 11 face each other. At this time, the
孔２３には、ボルト１９が挿通され、対向するフランジ状部１４を貫通してナット２１で固定される。すなわち、固定金具１３は、斜材７の両側にそれぞれ配置され、斜材７を挟み込むように連結される。それぞれの補強部材１１に固定された固定金具１３同士が対向して連結することで、補強部材１１が斜材７に固定される。
The bolt 19 is inserted into the
なお、対向する固定金具１３のフランジ状部１４同士は、互いに密着しなくてもよい。フランジ状部１４同士に隙間が形成されることで、斜材７の高さばらつきなどの影響を吸収して、補強部材１１を確実に斜材７に対して接触させることができる。したがって、斜材７から補強部材１１へ応力が伝達される。 In addition, it is not necessary to mutually contact flange-like-part 14 comrades of the fixture 13 which opposes mutually. By forming a gap between the flange-like portions 14, the reinforcing member 11 can be reliably brought into contact with the diagonal member 7 by absorbing the influence of the height variation of the diagonal member 7 and the like. Therefore, stress is transmitted from the diagonal member 7 to the reinforcing member 11.
一方、一対の補強部材１１で斜材７を挟み込んだ際に、補強部材１１の挟み込み方向と直交する方向（図２（ａ）の左右方向）は、補強部材１１のフランジ部１２の内面を斜材７の側面に密着させることは困難である。補強部材１１のフランジ部１２の間隔と、斜材７の幅を完全に一致させることは困難であり、補強部材１１のウェブ部８とフランジ部１２との接合部のフィレット形状などとの干渉があるためである。 On the other hand, when the diagonal member 7 is sandwiched between the pair of reinforcing members 11, the inner surface of the flange portion 12 of the reinforcing member 11 is inclined in the direction orthogonal to the sandwiching direction of the reinforcing member 11 (left and right direction in FIG. It is difficult to make it adhere to the side surface of the material 7. It is difficult to make the distance between the flanges 12 of the reinforcing member 11 and the width of the diagonal member 7 completely coincide with each other, and interference with the fillet shape of the joint between the web 8 and the flange 12 of the reinforcing member 11 It is because there is.
このように、フランジ部１２と斜材７との間に隙間が生じる場合には、図３（ｂ）に示すように、フランジ部１２を貫通する雌ねじ部２５に拘束部材１５をねじ込む。拘束部材１５は例えばボルトである。補強部材１１（フランジ部１２）の外周から、フランジ部１２と斜材７との間の隙間に拘束部材１５を貫通させることで、拘束部材１５の先端で斜材７の外側面を押圧することができる。したがって、斜材７から補強部材１１に拘束部材１５を介して応力が伝達される。 As described above, when a gap is generated between the flange portion 12 and the diagonal member 7, as shown in FIG. 3B, the restraint member 15 is screwed into the female screw portion 25 penetrating the flange portion 12. The restraint member 15 is, for example, a bolt. Pressing the outer surface of the diagonal member 7 with the tip of the restraint member 15 by penetrating the restraint member 15 from the outer periphery of the reinforcing member 11 (flange portion 12) into the gap between the flange portion 12 and the diagonal member 7 Can. Therefore, stress is transmitted from the oblique member 7 to the reinforcing member 11 via the restraining member 15.
なお、拘束部材１５は、斜材７の長手方向に対して、所定の間隔で複数個所に配置される。すなわち、斜材７は、拘束部材１５の押圧方向（図３（ｂ）の左右方向）に対しては、拘束部材１５によって、所定の間隔で拘束されることになる。一般的に、長尺部材は、長さが長くなるほど座屈しやすくなり、長さが短くなれば座屈しにくくなる。所定の間隔で拘束部材１５により斜材７を押圧することで、斜材７は、拘束部材１５での拘束部位間の長さで拘束されることとなる。このため、斜材７を短くしたのと同様の座屈抑制効果を得ることができ、当該方向への斜材７の座屈を抑制することができる。 The restraint members 15 are disposed at a plurality of places at predetermined intervals in the longitudinal direction of the diagonal member 7. That is, the diagonal members 7 are restrained at predetermined intervals by the constraining member 15 in the pressing direction of the constraining member 15 (the left-right direction in FIG. 3B). Generally, an elongated member is more likely to buckle as its length increases, and becomes less likely to buckle as its length decreases. By pressing the diagonal member 7 with the restraint member 15 at predetermined intervals, the diagonal member 7 is restrained by the length between the restraint portions of the restraint member 15. For this reason, the same buckling suppression effect as shortening the diagonal member 7 can be obtained, and the buckling of the diagonal member 7 in the direction can be suppressed.
このような効果を得るためには、拘束部材１５同士の間隔を、斜材７の１／２〜斜材７の幅以下とすることが望ましい。なお、拘束部材１５の拘束方向（図３（ｂ）の左右方向）と直交する方向に対しては、全長にわたって補強部材１１のウェブ部８が斜材７と接触するため、斜材７の当該方向への座屈を抑制することができる。 In order to obtain such an effect, it is desirable that the distance between the restraint members 15 be equal to or less than the width of 1/2 of the diagonal members 7 to 7 of the diagonal members 7. In the direction orthogonal to the restraining direction of the restraining member 15 (the left-right direction in FIG. 3B), the web portion 8 of the reinforcing member 11 contacts the oblique member 7 over the entire length. It is possible to suppress the buckling in the direction.
なお、拘束部材１５による拘束方向を、一方向（例えば図３（ｂ）の左右方向）のみではなく、複数方向としてもよい。例えば、図４に示すように、補強部材１１のウェブ部８とフランジ部１２の両方に雌ねじ部２５を形成し、それぞれの雌ねじ部２５に拘束部材１５をねじ込んでもよい。すなわち、拘束部材１５は、斜材７の一方の方向（例えば図４の左右方向）に対して配置されるとともに、この方向と略直交する方向（図４の上下方向）に対して配置される。このようにすることで、斜材７の異なる方向の外面を押圧して所定間隔で斜材７を拘束することができる。 The direction of restraint by the restraint member 15 may be a plurality of directions in addition to one direction (for example, the left and right direction in FIG. 3B). For example, as shown in FIG. 4, the female screw 25 may be formed on both the web 8 and the flange 12 of the reinforcing member 11, and the restraining member 15 may be screwed into each female screw 25. That is, the constraining member 15 is disposed in one direction (for example, the left and right direction in FIG. 4) of the oblique member 7 and is disposed in the direction (vertical direction in FIG. 4) substantially orthogonal to this direction. . By doing this, the outer surfaces in different directions of the diagonal members 7 can be pressed to restrain the diagonal members 7 at predetermined intervals.
このように、斜材７の略全周にわたって、補強部材１１との間に隙間を形成することで、補強部材１１や斜材７の変形や寸法誤差などの影響を受けることなく、座屈防止部材１０を斜材７に容易に固定することができる。また、拘束部材１５を複数の方向に所定の間隔で配置することで、いずれの方向に対しても斜材７の座屈を抑制することができる。 Thus, by forming a gap between the reinforcing member 11 and substantially the entire periphery of the oblique member 7, buckling is prevented without being affected by the deformation or dimensional error of the reinforcing member 11 or the oblique member 7. The member 10 can be easily fixed to the diagonal member 7. Further, by arranging the constraining members 15 at predetermined intervals in a plurality of directions, it is possible to suppress the buckling of the diagonal members 7 in any direction.
次に、既設の斜材７の補強方法について説明する。まず、既設の斜材７に沿って、補強部材１１を配置する。補強部材１１には、あらかじめ固定金具１３が固定される。一対の補強部材１１で斜材７を挟み込み、対向する固定金具１３同士を連結することで、補強部材１１を斜材７に固定することができる。補強部材１１が斜材７と接触していれば、この状態でも斜材７には一定の補強効果を得ることができる。 Next, the reinforcement method of the existing diagonal material 7 is demonstrated. First, the reinforcing member 11 is disposed along the existing diagonal members 7. The fixing bracket 13 is fixed to the reinforcing member 11 in advance. The reinforcing member 11 can be fixed to the diagonal member 7 by sandwiching the diagonal member 7 with the pair of reinforcing members 11 and connecting the opposing fixing brackets 13 to each other. As long as the reinforcing member 11 is in contact with the diagonal member 7, the diagonal member 7 can obtain a certain reinforcing effect even in this state.
さらに、固定金具１３同士を全て連結して補強部材１１を斜材７に対して配置した後、拘束部材１５を補強部材１１に対してねじ込み、拘束部材１５の先端で斜材７の外面を押圧することで、補強部材１１と斜材７との間に隙間がある場合でも、確実に斜材７から補強部材１１へ応力を伝達することができる。したがって、既設の斜材７を確実に補強し、座屈を防止することができる。 Furthermore, after all the fixing fittings 13 are connected to arrange the reinforcing member 11 with respect to the diagonal member 7, the restraining member 15 is screwed into the reinforcing member 11 and the tip of the restraining member 15 presses the outer surface of the diagonal member 7 By doing this, even when there is a gap between the reinforcing member 11 and the diagonal member 7, stress can be reliably transmitted from the diagonal member 7 to the reinforcing member 11. Therefore, the existing diagonal member 7 can be reliably reinforced, and buckling can be prevented.
なお、補強部材１１は、斜材７の上下から挟み込むのではなく、左右から挟み込んでもよい。例えば、図５に示すように、斜材７の左右から補強部材１１のウェブ部８で斜材７を挟み込むように、座屈防止部材１０を配置してもよい。この場合においても、一対の補強部材１１の挟み込み方向と直交する方向は、拘束部材１５によって斜材７を拘束することが望ましい。また、さらに、補強部材１１のウェブ部８を貫通する拘束部材１５を配置して、互いに直交する２方向から、拘束部材１５によって斜材７を拘束してもよい。 The reinforcing member 11 may be sandwiched from the left and right instead of sandwiching the diagonal member 7 from above and below. For example, as shown in FIG. 5, the buckling prevention member 10 may be disposed so as to sandwich the diagonal member 7 from the left and right of the diagonal member 7 with the web portion 8 of the reinforcing member 11. Also in this case, it is desirable that the diagonal member 7 be restrained by the constraining member 15 in the direction orthogonal to the sandwiching direction of the pair of reinforcing members 11. Furthermore, the constraining member 15 may be disposed by the constraining member 15 from two directions perpendicular to each other by arranging the constraining member 15 penetrating the web portion 8 of the reinforcing member 11.
ここで、斜材７は、その断面形状に応じて、曲げ剛性の高い方向と曲げ剛性の低い方向とがある場合がある。例えば、斜材７がＨ形鋼であるとすると、フランジ部に平行な方向の曲げ剛性は、フランジ部に直交する方向（ウェブ部に平行な方向）の曲げ剛性よりも低い。図５に示した例では、斜材７は、図中左右方向への曲げ剛性が、図中上下方向の曲げ剛性よりも低い。 Here, depending on the cross-sectional shape, the diagonal member 7 may have a direction in which the bending rigidity is high and a direction in which the bending rigidity is low. For example, assuming that the diagonal member 7 is an H-shaped steel, the bending stiffness in the direction parallel to the flange portion is lower than the bending stiffness in the direction orthogonal to the flange portion (direction parallel to the web portion). In the example shown in FIG. 5, the bending rigidity of the diagonal member 7 in the lateral direction in the drawing is lower than the bending rigidity in the vertical direction in the drawing.
一方、補強部材１１も、同様に、曲げ剛性の高い方向と低い方向とがある。例えば、図５に示したように、補強部材１１がＨ形鋼であれば、フランジ部１２に平行な方向（図中左右方向）の曲げ剛性は、フランジ部１２に直交する方向（ウェブ部８に平行な方向であって図中上下方向）の曲げ剛性よりも低い。この場合には、斜材７の曲げ剛性の低い方向と、補強部材１１の曲げ剛性の低い方向とが、異なる方向となることが望ましい。 On the other hand, the reinforcing member 11 also has a direction in which the bending rigidity is high and a direction in which the bending rigidity is low. For example, as shown in FIG. 5, when the reinforcing member 11 is an H-shaped steel, the bending rigidity in the direction parallel to the flange portion 12 (horizontal direction in the drawing) is in the direction orthogonal to the flange portion 12 (web portion 8 Lower than the bending rigidity in the vertical direction in the figure). In this case, it is desirable that the direction in which the bending rigidity of the diagonal member 7 is low and the direction in which the bending rigidity of the reinforcing member 11 is low are different.
例えば、図５に示す例では、斜材７と補強部材１１の両者ともに、図中左右方向の曲げ剛性が、これと直交する図中上下方向の曲げ剛性よりも低くなる。これに対し、例えば図３（ａ）に示す例では、斜材７の図中左右方向の曲げ剛性は、図中上下方向の曲げ剛性よりも低く、補強部材１１の図中左右方向の曲げ剛性は、図中上下方向の曲げ剛性よりも強い。すなわち、斜材７の曲げ剛性の弱い方向に対する補強部材１１による補強効果が大きくなる。このため、斜材７の座屈防止効果が大きい。このように、斜材７と補強部材１１は、互いの曲げ剛性の弱い方向同士が同一方向とならず、例えば互いに直交するように配置することが望ましい。なお、曲げ剛性の強弱は、それぞれの曲げ方向に対する断面係数から算出することができる。 For example, in the example shown in FIG. 5, the bending rigidity in the lateral direction in the drawing is lower than the bending rigidity in the vertical direction in the drawing which is orthogonal to the both in the diagonal member 7 and the reinforcing member 11. On the other hand, in the example shown in FIG. 3A, for example, the bending rigidity in the left and right direction in the drawing of the diagonal member 7 is lower than the bending rigidity in the vertical direction in the drawing. Is stronger than the bending rigidity in the vertical direction in the figure. That is, the reinforcing effect by the reinforcing member 11 with respect to the direction in which the bending rigidity of the diagonal member 7 is weak is increased. For this reason, the buckling prevention effect of the diagonal member 7 is large. Thus, it is desirable to arrange the diagonal members 7 and the reinforcing members 11 so that the directions of weak bending stiffness do not become the same, for example, orthogonal to each other. The strength of the bending stiffness can be calculated from the section coefficient for each bending direction.
また、補強部材１１の断面形状は、Ｈ形鋼である場合には限られない。例えば、図６（ａ）に示すように、コの字型の補強部材１１を用いた座屈防止部材１０ａを用いてもよい。この場合にも、斜材７の断面形状に応じて、補強部材１１の挟み込み方向を決定することが望ましい。この場合には、座屈防止部材１０における補強部材１１のフランジ部１２が斜材７の上下（または左右）に突出しないため、よりコンパクトな斜材補強構造を得ることができる。 Further, the cross-sectional shape of the reinforcing member 11 is not limited to the case of H-shaped steel. For example, as shown in FIG. 6A, a buckling prevention member 10a using a U-shaped reinforcing member 11 may be used. Also in this case, it is desirable to determine the sandwiching direction of the reinforcing member 11 according to the cross-sectional shape of the diagonal member 7. In this case, the flange portion 12 of the reinforcing member 11 in the buckling prevention member 10 does not protrude above and below (or to the left and right) of the diagonal member 7, so that a more compact diagonal material reinforcement structure can be obtained.
また、同様に、図６（ｂ）に示すように、角鋼管の補強部材１１を用いた座屈防止部材１０ｂを用いてもよい。このように、補強部材１１の断面形状は、角鋼管、コの字またはＬ字のアングルなど、特に限定されない。 Similarly, as shown in FIG. 6 (b), a buckling prevention member 10b using a reinforcing member 11 of a square steel pipe may be used. Thus, the cross-sectional shape of the reinforcing member 11 is not particularly limited, such as a square steel pipe, a U-shaped or L-shaped angle.
また、十分は補強効果を得ることができれば、一対の補強部材１１で挟み込むのではなく、補強部材１１を一方の側にのみ配置してもよい。例えば、図７は、斜材７がＬ字アングルである場合の補強構造を示す断面図である。座屈防止部材１０ｃにおいては、斜材７の一方の側に配置される補強部材１１と、一対の固定金具１３ａ、１３ｂからなる。 Further, as long as a sufficient reinforcing effect can be obtained, the reinforcing member 11 may be disposed only on one side instead of being sandwiched by the pair of reinforcing members 11. For example, FIG. 7 is a cross-sectional view showing a reinforcing structure when the diagonal member 7 is an L-shaped angle. In the buckling prevention member 10c, it consists of the reinforcement member 11 arrange | positioned at one side of the diagonal member 7, and a pair of fixing metal fittings 13a and 13b.
補強部材１１は、断面が丸鋼管であり、斜材７の長手方向に沿って配置される。固定金具１３ａ、１３は、斜材７の長手方向に対して所定の間隔で配置される。一対の固定金具１３ａ、１３ｂの内、一方の固定金具１３ｂは、補強部材１１の側に配置され、他方の固定金具１３ａは、これと対向するように配置される。すなわち、一対の固定金具１３ａ、１３ｂによって、斜材７が挟み込まれる。 The reinforcing member 11 is a round steel pipe in cross section, and is disposed along the longitudinal direction of the diagonal member 7. The fixtures 13 a and 13 are disposed at predetermined intervals in the longitudinal direction of the diagonal member 7. Of the pair of fixing fittings 13a and 13b, one fixing fitting 13b is disposed on the side of the reinforcing member 11, and the other fixing fitting 13a is disposed so as to face this. That is, the diagonal member 7 is sandwiched by the pair of fixing brackets 13a and 13b.
なお、固定金具１３ａは、補強部材１１に接合されていてもよく、接合されずに、斜材７と補強部材１１とを一括して挟み込んでもよい。また、固定金具１３ａと補強部材１１とを接合する場合には、固定金具１３ａは、補強部材１１の外周全体に配置されなくてもよく、補強部材１１の両端部近傍にそれぞれ分割して配置されてもよい。 The fixing fitting 13a may be joined to the reinforcing member 11, or the diagonal member 7 and the reinforcing member 11 may be collectively entrapped without being joined. Further, in the case of joining the fixing bracket 13 a and the reinforcing member 11, the fixing bracket 13 a may not be disposed on the entire outer periphery of the reinforcing member 11, and may be separately disposed near both ends of the reinforcing member 11. May be
このように、斜材７に沿って補強部材１１を配置し、補強部材１１を斜材７に対して固定金具１３ａ、１３ｂによって固定することで、斜材７を補強することができる。なお、この場合にも、拘束部材１５を用いて、斜材７と補強部材１１との間に隙間を形成してもよい。 Thus, the diagonal member 7 can be reinforced by arranging the reinforcing member 11 along the diagonal member 7 and fixing the reinforcing member 11 to the diagonal member 7 by the fixing fittings 13 a and 13 b. Also in this case, a gap may be formed between the diagonal member 7 and the reinforcing member 11 using the constraining member 15.
以上、本実施の形態によれば、既設の斜材７を効率よく補強することができる。この際、斜材７を挟み込むようにして固定金具を連結することで、補強部材１１が斜材７に固定されるため、構造が簡易であり、作業も容易である。また、補強部材１１は、斜材７の外周の全周を覆うものではないため、同一形状の補強部材１１を、複数の形態の斜材７に対して適用することもできる。また、一対の補強部材１１で斜材７を挟み込むことで、確実に斜材７を補強することができる。 As described above, according to the present embodiment, the existing diagonal members 7 can be efficiently reinforced. At this time, since the reinforcing member 11 is fixed to the diagonal member 7 by connecting the fixing bracket so as to sandwich the diagonal member 7, the structure is simple and the operation is easy. Further, since the reinforcing member 11 does not cover the entire periphery of the outer periphery of the diagonal member 7, the reinforcing member 11 having the same shape can be applied to the diagonal members 7 of a plurality of forms. In addition, the diagonal member 7 can be reliably reinforced by sandwiching the diagonal member 7 with the pair of reinforcing members 11.
また、固定金具同士はボルト１９とナット２１で連結されるため、溶接作業が不要である。 In addition, since the fixing brackets are connected by the bolt 19 and the nut 21, the welding operation is unnecessary.
また、補強部材１１と斜材７との間に隙間を形成することで、斜材７の寸法誤差や変形などが生じていても、隙間によってこれらを吸収し、容易に補強部材１１を斜材７に取り付けることができる。また、この場合でも、拘束部材１５によって、斜材７から補強部材１１へ確実に応力が伝達され、補強効果を得ることができる。 Further, by forming a gap between the reinforcing member 11 and the diagonal member 7, even if a dimensional error or deformation of the diagonal member 7 occurs, these gaps are absorbed by the gap and the reinforcing member 11 is easily made of the diagonal member. Can be attached to 7 Also in this case, the stress is reliably transmitted from the oblique member 7 to the reinforcing member 11 by the constraining member 15, and a reinforcing effect can be obtained.
特に、拘束部材１５を異なる２方向に配置することで、斜材７を２方向から拘束し、斜材７からの応力を確実に補強部材１１に伝達することができる。 In particular, by arranging the constraining members 15 in two different directions, the diagonal members 7 can be restrained from two directions, and the stress from the diagonal members 7 can be reliably transmitted to the reinforcing member 11.
以上、添付図を参照しながら、本発明の実施の形態を説明したが、本発明の技術的範囲は、前述した実施の形態に左右されない。当業者であれば、特許請求の範囲に記載された技術的思想の範疇内において各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。 Although the embodiments of the present invention have been described above with reference to the attached drawings, the technical scope of the present invention is not influenced by the above-described embodiments. It is apparent that those skilled in the art can conceive of various changes or modifications within the scope of the technical idea described in the claims, and they are naturally also within the technical scope of the present invention. It is understood that it belongs.
１………斜材の補強構造
３………柱
５………梁
７、７ａ………斜材
８………ウェブ部
１０、１０ａ、１０ｂ、１０ｃ………座屈防止部材
１１………補強部材
１２………フランジ部
１３、１３ａ、１３ｂ………固定金具
１４………フランジ状部
１５………拘束部材
１７………連結部材
１９………ボルト
２１………ナット
２３………孔
２５………雌ねじ部
1 ... ... Reinforcement structure of diagonal material 3 ... ... Pillar 5 ... ... Beam 7, 7a ... ... diagonal material 8 ... ... Web portion 10, 10a, 10b, 10c ... ... Buckling prevention member 11 ... ... Reinforcement member 12 ... ... Flange portion 13, 13a, 13b ... ... Fixing bracket 14 ... ... Flange shaped portion 15 ... ... Restraint member 17 ... ... Coupling member 19 ......... Bolt 21 .........
Claims (9)
前記斜材に沿って配置される補強部材と、
前記補強部材を前記斜材に固定する固定金具と、
を具備し、
前記固定金具は、前記斜材の両側にそれぞれ配置され、前記斜材を挟み込むように連結され、前記補強部材が前記斜材に固定されることを特徴とする斜材の補強構造。 A reinforcement structure for diagonal members arranged diagonally to a column or beam,
A reinforcing member disposed along the diagonal member;
A fixture for securing the reinforcing member to the diagonal member;
Equipped with
The said fixing bracket is each arrange | positioned at the both sides of the said diagonal material, is connected so that the said diagonal material may be pinched | interposed, The reinforcement structure of the diagonal material characterized by the said reinforcement member being fixed to the said diagonal material.
前記固定金具は、それぞれの前記補強部材に固定され、
一対の前記補強部材によって前記斜材が挟み込まれて、それぞれの前記補強部材に固定された前記固定金具同士が対向して連結することで、前記補強部材が前記斜材に固定されることを特徴とする請求項１記載の斜材の補強構造。 Comprising a pair of said reinforcing members,
The fixing brackets are fixed to the respective reinforcing members,
The reinforcing member is fixed to the diagonal member by the diagonal members being sandwiched by the pair of reinforcing members, and the fixing fittings fixed to the respective reinforcing members are connected to face each other. The reinforcement structure of the diagonal member according to claim 1.
前記補強部材の外周から、前記隙間に拘束部材が貫通し、前記拘束部材の先端で前記斜材の外面を押圧することで、前記斜材から前記補強部材に応力が伝達されることを特徴とする請求項１または請求項２に記載の斜材の補強構造。 A gap is formed between the reinforcing member and the diagonal member,
A restraint member penetrates the gap from the outer periphery of the reinforcement member, and stress is transmitted from the oblique material to the reinforcement member by pressing the outer surface of the oblique member with the tip of the restraint member. The reinforcement structure of the diagonal member according to claim 1 or claim 2.
補強部材と、
前記補強部材に所定の間隔で固定される固定金具と、
を具備し、
一対の前記補強部材を対向させた際に、それぞれの前記固定金具を連結可能であることを特徴とする斜材の座屈防止部材。 A buckling prevention member for diagonal members arranged diagonally to a column or a beam,
A reinforcing member,
A fixing bracket fixed to the reinforcing member at a predetermined interval;
Equipped with
When a pair of said reinforcement members are made to oppose, it is possible to connect each said fixing bracket, The buckling prevention member of the diagonal material characterized by the above-mentioned.
前記拘束部材を前記補強部材に対してねじ込むことが可能であることを特徴とする請求項６に記載の斜材の座屈防止部材。 A restraint member penetrating the reinforcement member;
The buckling prevention member according to claim 6, wherein the restraint member can be screwed into the reinforcing member.
前記斜材に沿って、固定金具が固定された一対の補強部材を、前記斜材を挟むように配置し、
対向する前記固定金具同士を連結して、前記補強部材を前記斜材に固定することを特徴とする斜材の補強方法。 It is a reinforcement method of the existing diagonal material arrange | positioned diagonally with respect to a pillar or a beam,
A pair of reinforcing members to which a fixing bracket is fixed is disposed along the diagonal member so as to sandwich the diagonal member,
A method of reinforcing a diagonal material, comprising connecting the facing fixing brackets to fix the reinforcing member to the diagonal material.
前記固定金具同士を連結した後、前記拘束部材を前記補強部材に対してねじ込み、前記拘束部材の先端で前記斜材の外面を押圧することを特徴とする請求項８記載の斜材の補強方法。 A restraint member penetrating the reinforcement member;
9. The method for reinforcing a diagonal member according to claim 8, wherein after the fixing metal fittings are connected, the restraint member is screwed into the reinforcing member, and the outer surface of the oblique member is pressed by the tip of the restraint member. .
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