JP4172364B2 - Member reinforcement structure and member reinforcement method - Google Patents

Member reinforcement structure and member reinforcement method Download PDF

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JP4172364B2
JP4172364B2 JP2003315522A JP2003315522A JP4172364B2 JP 4172364 B2 JP4172364 B2 JP 4172364B2 JP 2003315522 A JP2003315522 A JP 2003315522A JP 2003315522 A JP2003315522 A JP 2003315522A JP 4172364 B2 JP4172364 B2 JP 4172364B2
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steel plate
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reinforcing plate
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JP2005083047A (en
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和貴 白井
英雄 勝俣
則之 古屋
祥賀 辻
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Obayashi Corp
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Description

本発明は、補強対象部材に補強板を貼り付けて補強する部材の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 a member that is reinforced by attaching a reinforcing plate to a member to be reinforced.

従来より、例えばコンクリート梁などの部材の補強構造として、梁の側面に鋼板を接着材で貼り付けると共に、鋼板の端部を貫通ボルトやあと施工アンカー等の定着部材で梁の表面に定着する補強構造が知られている。かかる補強構造によれば、梁に作用する荷重を定着部材を介して鋼板に伝達し、鋼板に荷重を負担させることにより、コンクリート梁の耐力を向上させることができる。   Conventionally, for example, as a reinforcing structure for members such as concrete beams, a steel plate is attached to the side of the beam with an adhesive, and the end of the steel plate is fixed to the surface of the beam with fixing members such as through bolts or post-installed anchors. The structure is known. According to such a reinforcing structure, the load acting on the beam is transmitted to the steel plate via the fixing member, and the load is applied to the steel plate, whereby the proof stress of the concrete beam can be improved.

また、特許文献1には、開口部を有するコンクリート梁の補強構造が開示されている。この補強構造では、梁に設けられた開口部の両側から、筒状部とこの筒状部の端部に接合されたつば板とからなる補強体の前記筒状部を挿入し、つば板と既存梁の表面との間および筒状部と開口部の内周面との間に接着剤を充填すると共に、つば板をボルトで梁に締め付けて補強体を梁に固定している。
特開平5−311891号公報
Patent Document 1 discloses a reinforcing structure for a concrete beam having an opening. In this reinforcing structure, from both sides of the opening provided in the beam, the cylindrical portion of the reinforcing body composed of a cylindrical portion and a flange plate joined to the end of the cylindrical portion is inserted, and the flange plate and Adhesive is filled between the surface of the existing beam and between the tubular portion and the inner peripheral surface of the opening, and the reinforcing plate is fixed to the beam by fastening the collar plate to the beam with a bolt.
JP-A-5-311891

上述のように、コンクリート梁に鋼板を貼り付ける従来の補強構造では、梁に作用する荷重を鋼板に伝達できるように、鋼板をボルトやあと施工アンカーでコンクリート梁に定着している。その場合、コンクリート梁から鋼板への上下両方向の荷重を伝達できるように、少なくとも、梁の上下両側の位置で定着することが必要である。このため、コンクリート梁へボルトを挿通するためのコア抜き加工、あるいは、あと施工アンカーを打設するための穿孔を多数箇所で行わねばならず、工事の手間や期間が掛かってしまう。また、コア抜き加工や穿孔の際には大きな騒音が発生するので、作業箇所が多いと騒音発生の時間が長くなって、特に建物を使用しながら行うリニューアル工事の場合に居住環境を悪化させるという問題もある。   As described above, in a conventional reinforcing structure in which a steel plate is attached to a concrete beam, the steel plate is fixed to the concrete beam with a bolt or a post-installed anchor so that a load acting on the beam can be transmitted to the steel plate. In that case, it is necessary to fix at least the positions on both the upper and lower sides of the beam so that the load in both the upper and lower directions from the concrete beam to the steel plate can be transmitted. For this reason, core removal processing for inserting bolts into the concrete beam or drilling for placing post-construction anchors must be performed at a large number of locations, which takes time and effort for the construction. In addition, a large amount of noise is generated during coring and drilling, so if there are many work points, the time of noise generation will become longer, especially in the case of renovation work while using a building, which will worsen the living environment. There is also a problem.

本発明は上記の点に鑑みてなされたものであり、補強対象部材に補強板を接着して補強するにあたり、高い補強性能を確保しつつ、補強板を定着するためのボルトやあと施工アンカーの本数を削減できるようにすることを目的とする。   The present invention has been made in view of the above points, and when reinforcing a reinforcing plate by adhering the reinforcing plate to a member to be reinforced, while securing high reinforcing performance, a bolt or a post-construction anchor for fixing the reinforcing plate is provided. It aims at making it possible to reduce the number.

上記の目的を達成するため、請求項1に記載された発明は矩形の断面形状を有する補強対象部材の両側から、その断面表面形状に沿って屈曲された補強板を貼り付けると共に、前記補強対象部材の前記両側の互いに対向する位置にて、前記補強板の端部近傍を前記補強対象部材の表面に定着部材によって定着した部材の補強構造であって、前記補強板は略L型の断面形状を有する鋼板からなり、前記補強板が、補強対象部材の互いに対向する第1の表面から、それらの表面に隣接する第2の表面に沿って貼り付けられ、前記第2の表面上において互いに接続されることなく、前記第1の表面に前記定着部材により定着されていることを特徴とする。 To achieve the above object, is has been inventions claimed in claim 1, from both sides of the reinforcing object member having a rectangular cross-section, with paste reinforcing plate which is bent along its cross-sectional surface shape, wherein A reinforcing structure of a member in which the vicinity of an end portion of the reinforcing plate is fixed to the surface of the reinforcing target member by a fixing member at positions opposite to each other on both sides of the reinforcing target member, and the reinforcing plate is substantially L-shaped. The reinforcing plate is affixed along the second surface adjacent to those surfaces from the first surface of the member to be reinforced facing each other, and the reinforcing plate is attached on the second surface. The fixing member is fixed to the first surface without being connected to each other .

本発明によれば、補強対象部材に貼り付けられる補強板が、補強対象部材の表面形状に沿って屈曲されるので、この屈曲部分により、補強対象部材から補強板への荷重伝達を行える。このため、補強対象部材から補強板へ荷重を伝達するための定着部材の数を減らすことができる。   According to the present invention, since the reinforcing plate attached to the reinforcing target member is bent along the surface shape of the reinforcing target member, the load can be transmitted from the reinforcing target member to the reinforcing plate by the bent portion. For this reason, the number of fixing members for transmitting a load from the member to be reinforced to the reinforcing plate can be reduced.

また、請求項2に記載された発明は、請求項1記載の部材の補強構造において、前記補強対象部材は前記互いに対向する第1の表面に亘って貫通する開口部を有し、前記補強板は前記開口部の周辺に貼り付けられていると共に、前記補強板に、前記開口部に挿通された筒状部材が接合されていることを特徴とする。 Further, the invention described in claim 2, in reinforcing structure of claim 1 wherein the member, the reinforcing target member have a opening through over the first surface, wherein the mutually opposing, the reinforcing The plate is affixed around the opening, and a cylindrical member inserted through the opening is joined to the reinforcing plate .

また、請求項3に記載された発明は、補強対象部材の両側から、その断面表面形状に沿って屈曲された補強板を貼り付けると共に、前記補強対象部材の前記両側の互いに対向する位置にて、前記補強板の端部近傍を前記補強対象部材の表面に定着部材によって定着した部材の補強構造であって、
前記補強対象部材は前記両側に亘って貫通する開口部を有し、前記補強板は前記開口部の周辺に貼り付けられ、
前記補強板に、前記開口部を跨ぐように切り込みが設けられていることを特徴とする。
Further, the invention described in claim 3 attaches a reinforcing plate bent along the cross-sectional surface shape from both sides of the reinforcing target member, and at a position facing the both sides of the reinforcing target member. A reinforcing structure of a member in which the vicinity of the end portion of the reinforcing plate is fixed to the surface of the member to be reinforced by a fixing member,
The reinforcing object member has an opening penetrating over both sides, and the reinforcing plate is attached to the periphery of the opening,
The reinforcing plate is provided with a cut so as to straddle the opening.

また、請求項に記載された発明は、2枚の補強板をU字型に組み合わせて、矩形の断面形状を有する補強対象部材の3面に跨るように貼り付けてなる部材の補強構造であって、
前記2枚の補強板は、前記補強対象部材の互いに対向する表面のうちの一方の表面からこれに隣接する表面に沿って貼り付けられた第1の補強板と、前記互いに対向する他方の表面に沿って貼り付けられた第2の補強板とからなり、
前記第1及び第2の補強板は、前記一方の表面に隣接する表面の前記一方の表面とは反対側の端部近傍で前記補強対象部材に定着部材で定着されており、
前記第1の補強板と前記第2の補強板とが前記他方の表面上でボルト接合されていることを特徴とする。
Moreover, the invention described in claim 4 is a member reinforcing structure in which two reinforcing plates are combined in a U shape and are pasted so as to straddle three surfaces of a reinforcing target member having a rectangular cross-sectional shape. There,
The two reinforcing plates include a first reinforcing plate attached along a surface adjacent to one of the mutually opposing surfaces of the member to be reinforced, and the other opposing surface And a second reinforcing plate pasted along
The first and second reinforcing plates are fixed to the reinforcing object member by a fixing member in the vicinity of the end opposite to the one surface of the surface adjacent to the one surface ,
The first reinforcing plate and the second reinforcing plate are bolted on the other surface.

また、請求項に記載された発明に係る部材の補強方法は、矩形の断面形状を有する補強対象部材の両側から、その断面表面形状に沿って屈曲された、略L型の断面形状を有する鋼板からなる補強板を貼り付けると共に、前記補強対象部材の前記両側の互いに対向する位置にて、前記補強板の端部近傍を前記補強対象部材の表面に定着部材によって定着する部材の補強方法であって、
前記補強板を、補強対象部材の互いに対向する第1の表面から、それらの表面に隣接する第2の表面に沿って貼り付け、前記第2の表面上において互いに接続することなく、前記第1の表面に前記定着部材により定着することを特徴とする。
The member reinforcing method according to the invention described in claim 5 has a substantially L-shaped cross-sectional shape bent along the cross-sectional surface shape from both sides of the reinforcing target member having a rectangular cross- sectional shape. with paste reinforcing plate made of steel plate, the reinforcing at mutually opposing positions of the opposite sides of the target member, reinforcing the end portion of the reinforcing plate of the reinforcement object member parts material you fixed by the fixing member on the surface of A method ,
The reinforcing plate is attached from the first surface of the member to be reinforced facing each other along the second surface adjacent to the surface, and the first plate is connected to the first surface without being connected to each other. It is fixed on the surface of the sheet by the fixing member .

本発明によれば、補強対象物に補強板を接着して補強するにあたり、高い補強性能を確保しつつ、補強板を定着するためのボルトやあと施工アンカー等の定着部材の本数を削減することができる。   According to the present invention, when reinforcing a reinforcing plate by adhering the reinforcing plate, the number of fixing members such as bolts and post-installed anchors for fixing the reinforcing plate is reduced while securing high reinforcing performance. Can do.

以下、添付図面を参照して、本発明の様々な実施形態について説明する。なお、以下に示す各実施形態において共通の構成部分には同一の符号を付して重複する説明は省略するものとする。   Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. In addition, in each embodiment shown below, the same code | symbol is attached | subjected to a common component and the overlapping description shall be abbreviate | omitted.

図1は、本発明の第1の実施形態の補強構造を示す断面図である。また、図2は本実施形態の補強構造を図1の矢印IIの向きから見た図である。図1および図2に示すように、本実施形態では、鉄筋コンクリート(RC)、鉄骨鉄筋コンクリート(SRC)又は鉄骨コンクリート(SC)製の梁10を、本発明の補強板としての鋼板20により補強する。なお、本実施形態及び以下に述べる各実施形態の補強工事は、既設の梁10を補強する場合にも、梁10を新設する場合にも適用が可能である。   FIG. 1 is a cross-sectional view showing a reinforcing structure according to a first embodiment of the present invention. FIG. 2 is a view of the reinforcing structure of the present embodiment as viewed from the direction of arrow II in FIG. As shown in FIGS. 1 and 2, in this embodiment, a beam 10 made of reinforced concrete (RC), steel reinforced concrete (SRC), or steel concrete (SC) is reinforced by a steel plate 20 as a reinforcing plate of the present invention. In addition, the reinforcement work of this embodiment and each embodiment described below can be applied to the case where the existing beam 10 is reinforced or when the beam 10 is newly installed.

図1に示す如く、鋼板20は、本体部20aと屈曲部20bとからなる略L型の断面形状を有しており、梁10の両側面から下面に沿うように接着剤で貼り付けられている。なお、鋼板20は、鋼板材をL型に折り曲げて形成してもよいし、2枚の鋼板材をL型に溶接して形成してもよい。   As shown in FIG. 1, the steel plate 20 has a substantially L-shaped cross-sectional shape composed of a main body portion 20a and a bent portion 20b, and is attached with an adhesive so as to extend from both side surfaces of the beam 10 along the lower surface. Yes. The steel plate 20 may be formed by bending a steel plate material into an L shape, or may be formed by welding two steel plate materials into an L shape.

図1及び図2に示す如く、梁10には、梁10を貫通する円形の開口部12が設けられており、鋼板20には、開口部12に対応する円形孔22が設けられている。また、梁10の、開口部12の上方の左右両側の位置には、梁10を貫通するボルト孔14が設けられており、鋼板20の上端部近傍には、ボルト孔14に対応してボルト孔24が設けられている。これらボルト孔24及びボルト孔14に貫通ボルト30が挿通され、ナット32が締め込まれることで、鋼板20が梁10に定着される。   As shown in FIGS. 1 and 2, the beam 10 is provided with a circular opening 12 penetrating the beam 10, and the steel plate 20 is provided with a circular hole 22 corresponding to the opening 12. Further, bolt holes 14 penetrating the beam 10 are provided at positions on the left and right sides of the beam 10 above the opening 12, and bolts corresponding to the bolt holes 14 are provided near the upper end of the steel plate 20. A hole 24 is provided. The through bolt 30 is inserted into the bolt hole 24 and the bolt hole 14, and the nut 32 is tightened, whereby the steel plate 20 is fixed to the beam 10.

以上の構成による補強の効果を図3によって説明する。梁10にせん断荷重が矢印Aの向きに作用した場合、せん断荷重が大きくなるにつれて、やがては側面の鋼板20の本体部20aの接着面が剥がれ、その後、概して図3に符号Bで示すような向きのひび割れが梁10に発生することとなるが、このとき梁10から貫通ボルト30を介して矢印Cの向きの応力が鋼板20に伝達され、また、鋼板20の屈曲部20bを介して矢印Dの向きの応力が梁10から鋼板20に伝達されるため、ひび割れBの発生及び進展が拘束・抑制される。このように、本実施形態では、鋼板20をL型形状とすることで、梁10の下部にボルトを設けることなく、梁10に作用するせん断荷重を鋼板20へ着実に伝達することができ、これにより、鋼板20による高い補強性能を得ることができる。   The effect of reinforcement by the above configuration will be described with reference to FIG. When a shearing load acts on the beam 10 in the direction of arrow A, as the shearing load increases, the adhesive surface of the main body portion 20a of the side steel plate 20 is eventually peeled off, and thereafter, as generally indicated by the symbol B in FIG. The crack in the direction is generated in the beam 10, and at this time, the stress in the direction of the arrow C is transmitted from the beam 10 to the steel plate 20 through the through bolt 30, and the arrow in the bent portion 20 b of the steel plate 20 is transmitted. Since the stress in the direction D is transmitted from the beam 10 to the steel plate 20, the generation and progress of the crack B are restrained and suppressed. Thus, in this embodiment, the steel plate 20 can be steadily transmitted to the steel plate 20 with the shear load acting on the beam 10 without providing bolts at the lower portion of the beam 10 by making the steel plate 20 L-shaped. Thereby, the high reinforcement performance by the steel plate 20 can be obtained.

すなわち、鋼板20として、屈曲部20bを有しない平板上の鋼板を用いた場合、鋼板20の本体部20aの接着面の剥離後には、梁10のひび割れBより図中右下側に作用する下向き応力が鋼板に円滑に伝達されず補強性能が低下してしまうおそれがある。そこで、矢印Dの向きの応力を鋼板20に伝達するために、梁10の下側の部位にもボルトを設けることが必要になるが、その場合、ボルト孔の施工箇所が多くなって、工事の手間や工期の増大を招くことは上記解決課題の項で述べた通りである。   That is, when a steel plate on a flat plate not having the bent portion 20b is used as the steel plate 20, after peeling of the adhesive surface of the main body portion 20a of the steel plate 20, the downward direction acting on the lower right side in the figure from the crack B of the beam 10 The stress may not be transmitted smoothly to the steel sheet and the reinforcement performance may be reduced. Therefore, in order to transmit the stress in the direction of the arrow D to the steel plate 20, it is necessary to provide bolts at the lower part of the beam 10. In that case, the number of bolt hole construction points increases, As described in the above-mentioned section of the solution, the increase in labor and the construction period is caused.

これに対して、本実施形態では、L型に形成された鋼板20の屈曲部20bにより上記のような梁10から鋼板20への荷重伝達を行えるので、梁10の下側にボルトを設けることが不要となる。これにより、コンクリートへの孔の加工本数を少なくして工事の手間の軽減及び工期短縮を図ることができるのである。   On the other hand, in this embodiment, since the load transmission from the beam 10 to the steel plate 20 can be performed by the bent portion 20b of the steel plate 20 formed in the L shape, a bolt is provided on the lower side of the beam 10. Is no longer necessary. As a result, the number of holes in the concrete can be reduced to reduce the time and time required for construction.

図4は、本発明の第2の実施形態の補強構造を示す断面図であり、図5は、本実施形態の補強構造を図4の矢印IVの向きから見た図である。図4及び図5に示すように、本実施形態では、梁10にボルト孔14に代えて両側面にアンカー孔40を穿孔し、このアンカー孔40にあと施工アンカー42を打設してナット44を締め込んでいる。この実施形態は、例えば、梁10が鉄骨鉄筋コンクリート製であって、梁中央部に鉄骨が設けられている場合のように、梁を貫通するボルト孔を加工できない場合に好適である。   FIG. 4 is a cross-sectional view showing the reinforcing structure of the second embodiment of the present invention, and FIG. 5 is a view of the reinforcing structure of the present embodiment viewed from the direction of arrow IV in FIG. As shown in FIGS. 4 and 5, in this embodiment, instead of the bolt holes 14, anchor holes 40 are drilled on both sides instead of the bolt holes 14, and post-installed anchors 42 are driven into the anchor holes 40 to form nuts 44. Is tightened. This embodiment is suitable when, for example, the beam 10 is made of steel reinforced concrete, and a bolt hole penetrating the beam cannot be processed as in the case where a steel frame is provided at the center of the beam.

図6は、本発明の第1の参考例である補強構造を示す断面図であり、図7は、本参考例の補強構造を図6の矢印VIの向きから見た図である。同図に示すように、本参考例では、上記第1の実施形態の鋼板20の屈曲部20bの下面にブラケット48を溶接している。ブラケット48にはボルト孔49が設けられており、両側のブラケット48のボルト孔49を貫通するように貫通ボルト50が挿通され、ナット52が締め込まれている。 FIG. 6 is a cross-sectional view showing a reinforcing structure which is a first reference example of the present invention, and FIG. 7 is a view of the reinforcing structure of this reference example seen from the direction of arrow VI in FIG. As shown in the figure, in the present reference example , a bracket 48 is welded to the lower surface of the bent portion 20b of the steel plate 20 of the first embodiment. A bolt hole 49 is provided in the bracket 48, a through bolt 50 is inserted through the bolt hole 49 of the bracket 48 on both sides, and a nut 52 is tightened.

図8は、本発明の第2の参考例である補強構造を示す断面図であり、図9は、本参考例の補強構造を図8の矢印VIIIの向きから見た図である。本参考例では、上記第1の参考例において、上記第2の実施形態のように、貫通ボルト30に代えてあと施工アンカー42で鋼板20を定着した構成としている。 FIG. 8 is a cross-sectional view showing a reinforcing structure which is a second reference example of the present invention, and FIG. 9 is a view of the reinforcing structure of this reference example seen from the direction of arrow VIII in FIG. In this reference example , in the first reference example , the steel plate 20 is fixed by a post-construction anchor 42 instead of the through bolt 30 as in the second embodiment.

上記第1及び第2の参考例によれば、鋼板20の下端部が貫通ボルト50によって接続され、両側から締め付けられることで、鋼板20による拘束効果を高めて、梁10の補強性能を向上させることができる。 According to the first and second reference examples , the lower end portion of the steel plate 20 is connected by the through bolt 50 and tightened from both sides, thereby enhancing the restraining effect of the steel plate 20 and improving the reinforcement performance of the beam 10. be able to.

図10は、本発明の第3の参考例の補強構造を示す断面図である。本参考例では、上記第1の実施形態における両側の鋼板20を一体化した構成のU型断面を有する鋼板60を、梁10を下側から跨ぐように貼り付けている。本参考例では、梁10の両側の鋼板を下面で接続した構成となるので、鋼板60による拘束効果を高めて、梁10の補強性能を向上させることができる。 FIG. 10 is a cross-sectional view showing a reinforcing structure of a third reference example of the present invention. In this reference example , a steel plate 60 having a U-shaped cross section in which the steel plates 20 on both sides in the first embodiment are integrated is pasted so as to straddle the beam 10 from below. In this reference example , since the steel plates on both sides of the beam 10 are connected on the lower surface, the restraining effect by the steel plate 60 can be enhanced and the reinforcing performance of the beam 10 can be improved.

図11は、本発明の第4の参考例の補強構造を示す断面図である。本参考例では、上記第1の実施形態における両側の鋼板20の屈曲部20bを延長して、梁10の下面において互いに重なり合うように構成し、屈曲部20bどうしも接着剤で接合している。 FIG. 11 is a cross-sectional view showing a reinforcing structure of a fourth reference example of the present invention. In this reference example , the bent portions 20b of the steel plates 20 on both sides in the first embodiment are extended so as to overlap each other on the lower surface of the beam 10, and the bent portions 20b are joined together with an adhesive.

参考例によれば、上記第3の参考例と同様に、両側の鋼板20を梁10の下面で接続することにより補強性能を向上させることができる。さらに、梁10の幅に合わせて鋼板20を重ね合わせればよいので、鋼板20に必要とされる寸法精度を緩和できるので、その製作コストを低減できる。 According to the present reference example , the reinforcing performance can be improved by connecting the steel plates 20 on both sides with the lower surface of the beam 10 as in the third reference example . Furthermore, since it is only necessary to superimpose the steel plates 20 in accordance with the width of the beam 10, the dimensional accuracy required for the steel plates 20 can be relaxed, so that the manufacturing cost can be reduced.

図12は、本発明の第5の参考例の補強構造を示す断面図である。本参考例では、上記第1の実施形態における両側の鋼板20の屈曲部20bの先端を互いに突き合わせて溶接部65において溶接している。なお、新築工事の場合のように、現場溶接が可能であれば、鋼板20どうしの溶接を現場で行うことで、上記第4の参考例の場合と同様に、鋼板20に必要な寸法精度を緩和できる。 FIG. 12 is a cross-sectional view showing a reinforcing structure of a fifth reference example of the present invention. In this reference example , the ends of the bent portions 20b of the steel plates 20 on both sides in the first embodiment are brought into contact with each other and welded at the weld portion 65. In addition, if on-site welding is possible as in the case of new construction work, the dimensional accuracy required for the steel plate 20 is obtained by performing welding between the steel plates 20 on-site, as in the case of the fourth reference example. Can be relaxed.

図13は、本発明の第6の参考例の補強構造を示す断面図である。同図に示すように、本参考例では、上記第1の実施形態の鋼板20において屈曲部20bの先端から下方に屈曲して延びる第2屈曲部20cを備える構成の鋼板20Aを用いている。第2屈曲部20cにはボルト孔20dが設けられており、両側の鋼板20Aのボルト孔20dを貫通するように貫通ボルト70が挿通され、ナット72が締め込まれている。なお、施工精度を考慮して、両側の鋼板20Aの第2屈曲部20cの間には若干の隙間を設けておくことが好ましい。 FIG. 13 is a cross-sectional view showing a reinforcing structure of a sixth reference example of the present invention. As shown in the figure, in the present reference example , a steel plate 20A having a configuration in which a second bent portion 20c is bent and extended downward from the tip of the bent portion 20b in the steel plate 20 of the first embodiment is used. The second bent portion 20c is provided with a bolt hole 20d. A through bolt 70 is inserted through the bolt hole 20d of the steel plates 20A on both sides, and a nut 72 is tightened. In consideration of construction accuracy, it is preferable to provide a slight gap between the second bent portions 20c of the steel plates 20A on both sides.

参考例でも、上記第1及び第2の参考例と同様に、鋼板20Aの下端部が貫通ボルト70で接続されて両側から締め付けられることで、鋼板20Aによる拘束効果を高めて、梁10の補強性能を向上させることができる。 Also in the present reference example , the lower end portion of the steel plate 20A is connected with the through bolt 70 and tightened from both sides in the same manner as in the first and second reference examples , so that the restraining effect by the steel plate 20A is enhanced, and the beam 10 Reinforcing performance can be improved.

図14は、本発明の第の実施形態の補強構造を示す断面図である。同図に示すように、本実施形態では、両側の鋼板20B(請求項13の第1の補強板に対応),鋼板20C(請求項13の第2の補強板に対応)どうしの接続位置を、梁10の片側(図14では、図中右側)の側面上に寄せて貫通ボルト80及びナット82により締め付けている。この場合も、施工誤差等を考慮して、鋼板20B,20Cの締付け部の間に隙間を設けてくことが好ましい。 FIG. 14 is a cross-sectional view showing the reinforcing structure of the third embodiment of the present invention. As shown in the figure, in this embodiment, the connection positions of the steel plates 20B (corresponding to the first reinforcing plate of claim 13) and the steel plates 20C (corresponding to the second reinforcing plate of claim 13) on both sides are set. Then, the beam 10 is tightened by a through bolt 80 and a nut 82 on the side surface of one side (the right side in FIG. 14) of the beam 10. Also in this case, it is preferable to provide a gap between the tightening portions of the steel plates 20B and 20C in consideration of construction errors and the like.

本実施形態によれば、鋼板20B,20Cのボルトによる接続部分が梁10の側方に突出する構成となるため、梁下に突出物を設けたくない場合に好適である。   According to this embodiment, since the connection part by the volt | bolt of steel plate 20B, 20C becomes a structure protruded to the side of the beam 10, it is suitable when it is not desired to provide a protrusion under the beam.

図15は、本発明の第7の参考例である補強構造を示す断面図である。本参考例の補強構造は、上記第1の参考例(図6,図7)において、貫通ボルト30,50を緊張材としてナット32,52で締め付けることで梁10の両側から圧縮力を導入し、これにより、圧着による鋼板20と梁10との接着強度の向上や、コンクリートの拘束効果による補強性能の向上を図っている。さらに、本実施形態では、貫通ボルト30,50を締め付けるナット32,52と梁10の表面との間に、弾性部材として皿バネ等の弾性バネ90,92を介装することにより、コンクリートがクリープ現象等により変形した場合にも、長期にわたって安定した圧縮荷重を導入できるようにしている。 FIG. 15 is a cross-sectional view showing a reinforcing structure which is a seventh reference example of the present invention. The reinforcing structure of this reference example introduces a compressive force from both sides of the beam 10 by tightening the through bolts 30 and 50 with nuts 32 and 52 as tension members in the first reference example (FIGS. 6 and 7). Thereby, the improvement of the adhesive strength of the steel plate 20 and the beam 10 by press bonding and the improvement of the reinforcement performance by the constraint effect of concrete are aimed at. Furthermore, in this embodiment, concrete is creeped by inserting elastic springs 90 and 92 such as disc springs as elastic members between the nuts 32 and 52 for tightening the through bolts 30 and 50 and the surface of the beam 10. Even when deformed due to a phenomenon or the like, a stable compressive load can be introduced over a long period of time.

図16は、本発明の第の実施形態の補強構造を示す断面図である。同図に示す如く、本実施形態では、鋼管100を、その両端部が梁10の側面から突出するように開口部12に挿入し、鋼管100の外周面と鋼板20の円形孔22の内周面とを接着剤で接合している。ただし、現場溶接が可能な場合は、溶接してもよい。 FIG. 16 is a cross-sectional view showing the reinforcing structure of the fourth embodiment of the present invention. As shown in the figure, in this embodiment, the steel pipe 100 is inserted into the opening 12 so that both end portions protrude from the side surface of the beam 10, and the outer peripheral surface of the steel pipe 100 and the inner periphery of the circular hole 22 of the steel plate 20. The surface is joined with an adhesive. However, if field welding is possible, welding may be performed.

本実施形態によれば、鋼板20による補強効果が得られると共に、梁10に作用したアーチ荷重を鋼管100に負担させることで、開口部12周辺の補強性能をより向上させることができる。また、鋼板20が鋼板100のつばとなって鋼管100の剛性及び耐力が高まると共に、鋼板20も鋼板100に接合されることで、梁10への固定強度も向上する。なお、鋼管100が十分な荷重を負担できる場合には、貫通ボルト30を省略することも考えられる。   According to the present embodiment, the reinforcing effect by the steel plate 20 can be obtained, and the arch load acting on the beam 10 can be borne by the steel pipe 100, whereby the reinforcing performance around the opening 12 can be further improved. Further, the steel plate 20 becomes a brim of the steel plate 100 to increase the rigidity and proof stress of the steel pipe 100, and the steel plate 20 is also joined to the steel plate 100, so that the fixing strength to the beam 10 is also improved. Note that when the steel pipe 100 can bear a sufficient load, the through bolt 30 may be omitted.

図17は、本発明の第8の参考例であるの補強構造を示す断面図である。同図に示す如く、本参考例では、梁10の両側に接合した鋼板20の間に亘るように、一対のL型のCFRP(炭素繊維強化樹脂)板110をU型に組み合わせて梁10の下側から接着剤で接合している。 FIG. 17 is a cross-sectional view showing a reinforcing structure which is an eighth reference example of the present invention. As shown in the figure, in this reference example , a pair of L-type CFRP (carbon fiber reinforced resin) plates 110 are combined in a U shape so as to extend between the steel plates 20 joined to both sides of the beam 10. Bonded with adhesive from below.

参考例によれば、梁10の下面において、両側の鋼板20どうしがCFRP板110で接続固定されるので、鋼板20による梁10の補強性能を向上させることができる。なお、L型のCFRP板110に代えて、CFRP製のシートをL型に接着してもよい。あるいは、図18に示すように、CFRP製の平板状あるいは棒状の接続部材112を、両側の鋼板20の屈曲部20bの間に亘るように接着してもよい。 According to this reference example , since the steel plates 20 on both sides are connected and fixed to each other by the CFRP plate 110 on the lower surface of the beam 10, the reinforcing performance of the beam 10 by the steel plate 20 can be improved. Instead of the L-type CFRP plate 110, a CFRP sheet may be bonded to the L-type. Alternatively, as shown in FIG. 18, a CFRP flat plate-like or rod-like connecting member 112 may be bonded so as to extend between the bent portions 20 b of the steel plates 20 on both sides.

図19は、本発明の第9の参考例であるの補強構造を示す断面図である。同図に示す如く、本参考例では、梁10の両側に接合した鋼板20の屈曲部20bの間に亘るように鋼製のフラットバー120を配設し、このフラットバー120及び鋼板20の屈曲部20bにボルト122を貫通させてナット124で締め込んでいる。また、梁10の下面に、主筋のかぶり厚を損なわない程度の凹部126を形成し、この凹部126に内側のナット124を収めるようにすることで、内側のナット124と梁10との干渉を防止している。なお、ボルト122及びナット124の締め付け後、凹部126にエポキシ樹脂などを充填することにより、コンクリートの断面欠損による強度低下を防止できる。 FIG. 19 is a cross-sectional view showing a reinforcing structure which is a ninth reference example of the present invention. As shown in the figure, in this reference example , a steel flat bar 120 is disposed so as to extend between the bent portions 20b of the steel plate 20 joined to both sides of the beam 10, and the flat bar 120 and the steel plate 20 are bent. Bolts 122 are passed through the portion 20b and tightened with nuts 124. Further, a concave portion 126 that does not impair the cover thickness of the main bar is formed on the lower surface of the beam 10, and the inner nut 124 is accommodated in the concave portion 126, thereby preventing interference between the inner nut 124 and the beam 10. It is preventing. After tightening the bolt 122 and the nut 124, filling the recess 126 with an epoxy resin or the like can prevent a decrease in strength due to a cross-sectional defect of the concrete.

参考例によれば、梁10の下面において、両側の鋼板20どうしをフラットバー120で接続固定することで、鋼板20による梁10の補強性能を向上させることができる。 According to this reference example , the reinforcing performance of the beam 10 by the steel plate 20 can be improved by connecting and fixing the steel plates 20 on both sides with the flat bar 120 on the lower surface of the beam 10.

図20は、本発明の第10の参考例であるの補強構造を示す断面図である。本参考例では、上記第9の参考例において、鋼板20の屈曲部20bにネジ孔20dを設け、このネジ孔20dにフラットバー120を貫通するボルト122を締めこんでいる。このようにすれば、内側にナット124を設けずに済むので、上記第9の参考例のように、内側のナット124が梁10と干渉するのを防止するために凹部126を設けることが不要となる。 FIG. 20 is a sectional view showing a reinforcing structure which is a tenth reference example of the present invention. In the present reference example , in the ninth reference example , a screw hole 20d is provided in the bent portion 20b of the steel plate 20, and a bolt 122 penetrating the flat bar 120 is tightened in the screw hole 20d. In this case, it is not necessary to provide the nut 124 on the inner side, so that it is not necessary to provide the concave portion 126 in order to prevent the inner nut 124 from interfering with the beam 10 as in the ninth reference example. It becomes.

図21は、本発明の第11の参考例である補強構造を示す断面図であり、図22は、本参考例の補強構造を図21の矢印XXIの向きから見た図である。本参考例では、鋼板20の屈曲部20bの下面に、鋼製のアングル材130を梁10の幅方向に延びる向きに予め溶接しておき、両側のアングル材130の間にフラットバー132をボルト134及びナット136で取り付けている。 FIG. 21 is a cross-sectional view showing a reinforcing structure which is an eleventh reference example of the present invention, and FIG. 22 is a view of the reinforcing structure of this reference example seen from the direction of arrow XXI in FIG. In this reference example , a steel angle member 130 is welded in advance to the lower surface of the bent portion 20b of the steel plate 20 in a direction extending in the width direction of the beam 10, and a flat bar 132 is bolted between the angle members 130 on both sides. 134 and a nut 136.

図23は、本発明の第12の参考例である補強構造を示す断面図である。本参考例では、鋼板20の本体部20aの側面端部に、鋼製のアングル材140を梁10の長手方向に延びる向きに予め溶接しておき、両側のアングル材140の間にフラットバー142をボルト144及びナット146で取り付けている。 FIG. 23 is a sectional view showing a reinforcing structure which is a twelfth reference example of the present invention. In this reference example , a steel angle member 140 is welded in advance to the end of the side surface of the main body 20a of the steel plate 20 in a direction extending in the longitudinal direction of the beam 10, and a flat bar 142 is interposed between the angle members 140 on both sides. Are attached with bolts 144 and nuts 146.

上記第11及び第12の参考例によれば、梁10の下面において、両側の鋼板20どうしがアングル材130又は140を介してフラットバー132又は142により接続されるので、鋼板20による梁10の補強性能を向上させることができる。 According to the eleventh and twelfth reference examples , the steel plates 20 on both sides are connected to each other by the flat bars 132 or 142 via the angle members 130 or 140 on the lower surface of the beam 10. Reinforcing performance can be improved.

図24は、本発明の第13の参考例である補強構造を示す断面図である。同図に示すように、本参考例では、L型の鋼板20に代えて平板上の鋼板150を用い、この鋼板150の下端部にアングル材152を予め溶接しておいたものを梁10の両側面に接着材で接合している。そして、両側のアングル材150の間に亘るようにフラットバー154をボルト156及びナット158で取り付けている。 FIG. 24 is a cross-sectional view showing a reinforcing structure which is a thirteenth reference example of the present invention. As shown in the figure, in this reference example , a flat steel plate 150 is used in place of the L-shaped steel plate 20, and an angle member 152 is welded to the lower end of the steel plate 150 in advance. Bonded to both sides with adhesive. A flat bar 154 is attached with bolts 156 and nuts 158 so as to extend between the angle members 150 on both sides.

参考例によれば、梁10の下面において、両側の鋼板150どうしがアングル材152を介してフラットバー154により接続されることにより鋼板150による補強性能を向上させることができると共に、L型鋼板に比べて加工の手間が掛からず低コストな平板状の鋼板150を用いているので、施工コストを抑えることもできる。 According to this reference example , the steel plate 150 on both sides is connected to each other by the flat bar 154 via the angle member 152 on the lower surface of the beam 10, whereby the reinforcing performance by the steel plate 150 can be improved and the L-shaped steel plate. Compared to the above, since the low-cost flat steel plate 150 is used without processing time, the construction cost can be reduced.

図25は、本発明の第の実施形態の補強構造を梁10の側面から見た図である。同図に示すように、本実施形態では、補強部材としての鋼板160に、梁10の開口部12に対応して切込162を設け、この開口部12が切込162内に収まるように、鋼板160を梁10の側面に接着剤で貼り付けている。なお、この補強構造の断面構成としては、上記した様々な実施形態の構成を用いることができる。 FIG. 25 is a view of the reinforcing structure of the fifth embodiment of the present invention viewed from the side surface of the beam 10. As shown in the figure, in the present embodiment, the steel plate 160 as the reinforcing member is provided with a cut 162 corresponding to the opening 12 of the beam 10, and the opening 12 is accommodated in the cut 162. A steel plate 160 is attached to the side surface of the beam 10 with an adhesive. As the cross-sectional configuration of the reinforcing structure, the configurations of the various embodiments described above can be used.

本実施形態によれば、梁10の開口部12を通して配管や配線等が行われてしまった後でも、その配管等を切込162で避けながら鋼板160を図25に示す所定位置まで移動させることにより、鋼板160による補強を行うことができる。   According to the present embodiment, the steel plate 160 is moved to the predetermined position shown in FIG. 25 while avoiding the piping 162 and the like by the notch 162 even after piping or wiring is performed through the opening 12 of the beam 10. Thus, the steel plate 160 can be reinforced.

なお、図25では、鋼板160が開口部12を上側から跨ぐように配置されるものとしたが、上下を反転して、開口部12を下側から跨ぐ構成とすることもできる。例えば、上記第6の参考例(図13)や第7の参考例(図15)のように、鋼板160の下端部同士がボルトで締付けられる構成であれば、図25のように、開口部12を上側から跨ぐ(つまり、下端側に切り欠きが存在する)ように構成しても、鋼板160の下端部における強度上の問題は生じない。一方、第1の実施形態(図1,図2)のように、鋼板下端部での補強がなされない場合には、開口部12を下側から跨ぐ(つまり、下端側に切り欠きが存在しない)構成の方が好ましいといえる。鋼板160の向きは、このような鋼板160の強度と、施工のし易さを勘案して決めればよい。 In FIG. 25, the steel plate 160 is arranged so as to straddle the opening 12 from the upper side, but it is also possible to invert the top and bottom and to straddle the opening 12 from the lower side. For example, as in the sixth reference example (FIG. 13) and the seventh reference example (FIG. 15), if the lower ends of the steel plate 160 are tightened with bolts, the opening portion is as shown in FIG. Even if it is configured so as to straddle 12 from above (that is, there is a notch on the lower end side), there is no problem in strength at the lower end portion of the steel plate 160. On the other hand, as in the first embodiment (FIGS. 1 and 2), when reinforcement at the lower end of the steel plate is not performed, the opening 12 is straddled from the lower side (that is, there is no notch on the lower end side). ) The configuration is preferable. The orientation of the steel plate 160 may be determined in consideration of the strength of the steel plate 160 and the ease of construction.

図26は、本発明の第14の参考例である補強構造の断面図であり、図27は、本参考例の補強構造を図26の矢印XXVIの向きから見た図である。これらの図面に示す如く、本参考例では、鋼板20にボルト孔を設けるのではなく、現場にて鋼板20にアングル材170を接着し、貫通ボルト30を、アングル材170のボルト孔172を通して梁10のボルト孔14に挿通してナット32を締め込んでいる。また、アングル材170の下端部でも両側のアングル材170のボルト孔174に貫通ボルト176を挿通してナット178を締め込んでいる。 FIG. 26 is a cross-sectional view of a reinforcing structure that is a fourteenth reference example of the present invention, and FIG. 27 is a diagram of the reinforcing structure of this reference example viewed from the direction of arrow XXVI in FIG. As shown in these drawings, in this reference example , the bolt hole is not provided in the steel plate 20, but the angle member 170 is bonded to the steel plate 20 at the site, and the through bolt 30 is passed through the bolt hole 172 of the angle member 170 as a beam. Ten nuts 32 are tightened through the ten bolt holes 14. In addition, a through bolt 176 is inserted into the bolt hole 174 of the angle member 170 on both sides at the lower end portion of the angle member 170 and the nut 178 is tightened.

このような構成の利点は以下の通りである。すなわち、上記各実施形態及び参考例のように、鋼板20に、梁10の開口部12に対応した円形孔22と、貫通ボルト30を挿通させるためのボルト孔24の双方を設ける場合には、それら円形孔22及びボルト孔24を、梁10側の開口部12とボルト孔14との位置関係に合わせて正確に位置決めして加工しておくことが必要である。これに対して、本実施形態では、ボルト孔174を備えるアングル材170を現場で鋼板20に接着するので、その接着の際に、円形孔22とボルト孔172の位置関係を調整できる。したがって、本実施形態によれば、鋼板20に要求される加工精度を緩和して、鋼板20の製作コストを低減することができる。 The advantages of such a configuration are as follows. That is, as in the above embodiments and reference examples , when the steel plate 20 is provided with both the circular hole 22 corresponding to the opening 12 of the beam 10 and the bolt hole 24 through which the through bolt 30 is inserted, The circular holes 22 and the bolt holes 24 need to be accurately positioned and processed according to the positional relationship between the opening 12 on the beam 10 side and the bolt holes 14. On the other hand, in this embodiment, since the angle member 170 including the bolt hole 174 is bonded to the steel plate 20 at the site, the positional relationship between the circular hole 22 and the bolt hole 172 can be adjusted during the bonding. Therefore, according to this embodiment, the processing accuracy required for the steel plate 20 can be relaxed, and the manufacturing cost of the steel plate 20 can be reduced.

なお、上記図10〜図26では、鋼板を貫通ボルト30で定着した場合を示しているが、第2の実施形態のように、鋼板をあと施工アンカー42で定着する構成としてもよい。 10 to 26 show the case where the steel plate is fixed with the through bolts 30, but the steel plate may be fixed with the post-installed anchor 42 as in the second embodiment.

また、上述した各実施形態及び参考例では、開口部12を有するコンクリート梁10を補強する場合について説明したが、本発明は、これに限らず、開口部12を有しないコンクリート梁に適用することもできる。また、コンクリート梁に限らず、コンクリート柱の補強にも適用することができ、柱や梁に限らず、各種のコンクリート部材にも適用することができる。さらに、コンクリート部材に限らず、木造建物の柱や梁の補強にも適用が可能である。また、参考例として、補強対象物が梁のように矩形断面を有する場合に限らず、例えば図28に示すように、曲面状の表面形状を有する補強対象物200についても、その表面に沿って屈曲した鋼板202を補強対象物200の両側から貼り付けて、その端部をボルトやあと施工アンカー等の定着部材206で定着することが可能である。 Moreover, although each embodiment and reference example mentioned above demonstrated the case where the concrete beam 10 which has the opening part 12 was reinforced, this invention is applied not only to this but to the concrete beam which does not have the opening part 12. You can also. Further, the present invention can be applied not only to concrete beams but also to reinforcement of concrete columns, and can be applied not only to columns and beams but also to various concrete members. Furthermore, the present invention can be applied not only to concrete members but also to reinforcing columns and beams of wooden buildings. Further, as a reference example, the reinforcing object is not limited to a rectangular cross section like a beam. For example, as shown in FIG. 28, a reinforcing object 200 having a curved surface shape is also along the surface. paste steel 202 bent from both sides of the reinforcement object 200, it is possible and child fixing its ends in the fixing member 206 such as a bolt or post-installed anchors.

更に、上記の説明では、本発明の補強板として鋼板を用いるものとして説明したが、第3及び第5の実施形態(図14、図25)では、補強板としてCFRP板等の繊維強化樹脂板や、プレキャストコンクリート板あるいはプレキャストモルタル板等を用いることも可能である。 Furthermore, in the above description , the steel plate is used as the reinforcing plate of the present invention. However, in the third and fifth embodiments (FIGS. 14 and 25), a fiber reinforced resin plate such as a CFRP plate is used as the reinforcing plate. It is also possible to use a precast concrete board or a precast mortar board.

本発明の第1の実施形態の補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure of the 1st Embodiment of this invention. 本実施形態の補強構造を図1の矢印IIの向きから見た図である。It is the figure which looked at the reinforcement structure of this embodiment from the direction of arrow II of FIG. 本実施形態における補強の効果を説明するための図である。It is a figure for demonstrating the effect of the reinforcement in this embodiment. 本発明の第2の実施形態の補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure of the 2nd Embodiment of this invention. 本実施形態の補強構造を図4の矢印IVの向きから見た図である。It is the figure which looked at the reinforcement structure of this embodiment from the direction of arrow IV of FIG. 本発明の第1の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 1st reference example of this invention. 参考例の補強構造を図6の矢印VIの向きから見た図である。It is the figure which looked at the reinforcement structure of this reference example from the direction of arrow VI of FIG. 本発明の第2の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 2nd reference example of this invention. 参考例の補強構造を図8の矢印VIIIの向きから見た図である。It is the figure which looked at the reinforcement structure of this reference example from the direction of arrow VIII of FIG. 本発明の第3の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 3rd reference example of this invention. 本発明の第4の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 4th reference example of this invention. 本発明の第5の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 5th reference example of this invention. 本発明の第6の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 6th reference example of this invention. 本発明の第の実施形態の補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure of the 3rd Embodiment of this invention. 本発明の第7の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 7th reference example of this invention. 本発明の第の実施形態の補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure of the 4th Embodiment of this invention. 本発明の第8の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 8th reference example of this invention. 図17の参考例の変形例を示す図である。It is a figure which shows the modification of the reference example of FIG. 本発明の第9の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 9th reference example of this invention. 本発明の第10の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 10th reference example of this invention. 本発明の第11の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 11th reference example of this invention. 参考例の補強構造を図21の矢印XXIの向きから見た図である。It is the figure which looked at the reinforcement structure of this reference example from the direction of arrow XXI of FIG. 本発明の第12の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 12th reference example of this invention. 本発明の第13の参考例である補強構造を示す断面図である。It is sectional drawing which shows the reinforcement structure which is the 13th reference example of this invention. 本発明の第の実施形態の補強構造を梁10の側面から見た図である。It is the figure which looked at the reinforcement structure of the 5th Embodiment of this invention from the side surface of the beam. 本発明の第14の参考例である補強構造の断面図である。 It is sectional drawing of the reinforcement structure which is the 14th reference example of this invention. 参考例の補強構造を図26の矢印XXVIの向きから見た図である。It is the figure which looked at the reinforcement structure of this reference example from the direction of arrow XXVI of FIG. 曲面状の表面形状を有する補強対象物を補強する場合の参考例を示す断面図である。It is sectional drawing which shows the reference example in the case of reinforcing the reinforcement target object which has a curved surface shape.

符号の説明Explanation of symbols

10 梁
12 開口部
14 ボルト孔
20,20A,20B,20C 鋼板
20a 本体部
20b 屈曲部
20c 第2屈曲部
22 円形孔
24 ボルト孔
30 貫通ボルト
32 ナット
40 アンカー孔
42 あと施工アンカー
44 ナット
50,70,80,176 貫通ボルト
52,72,82,178 ナット
60 鋼板
65 溶接部
90,92 弾性バネ
100 鋼管
110 CFRP板
112 接続部材
120,132,142 フラットバー
150,160 鋼板
200 補強対象物
202 鋼板
206 定着部材
DESCRIPTION OF SYMBOLS 10 Beam 12 Opening part 14 Bolt hole 20, 20A, 20B, 20C Steel plate 20a Main body part 20b Bending part 20c 2nd bending part 22 Circular hole 24 Bolt hole 30 Through bolt 32 Nut 40 Anchor hole 42 Post-installed anchor 44 Nut 50, 70 , 80, 176 Through bolt 52, 72, 82, 178 Nut 60 Steel plate 65 Welded portion 90, 92 Elastic spring 100 Steel pipe 110 CFRP plate 112 Connection member 120, 132, 142 Flat bar 150, 160 Steel plate 200 Reinforcement object 202 Steel plate 206 Fixing member

Claims (5)

矩形の断面形状を有する補強対象部材の両側から、その断面表面形状に沿って屈曲された補強板を貼り付けると共に、前記補強対象部材の前記両側の互いに対向する位置にて、前記補強板の端部近傍を前記補強対象部材の表面に定着部材によって定着した部材の補強構造であって、
前記補強板は略L型の断面形状を有する鋼板からなり、
前記補強板が、補強対象部材の互いに対向する第1の表面から、それらの表面に隣接する第2の表面に沿って貼り付けられ、前記第2の表面上において互いに接続されることなく、前記第1の表面に前記定着部材により定着されていることを特徴とする部材の補強構造。
A reinforcing plate bent along the cross-sectional surface shape is affixed from both sides of the reinforcing target member having a rectangular cross-sectional shape, and ends of the reinforcing plate at positions facing each other on the both sides of the reinforcing target member A member reinforcing structure in which the vicinity of the portion is fixed to the surface of the member to be reinforced by a fixing member ,
The reinforcing plate is made of a steel plate having a substantially L-shaped cross section,
The reinforcing plate is affixed along the second surface adjacent to the first surface of the reinforcing target member facing each other, without being connected to each other on the second surface, A member reinforcing structure , wherein the member is fixed to the first surface by the fixing member .
前記補強対象部材は前記互いに対向する第1の表面に亘って貫通する開口部を有し、前記補強板は前記開口部の周辺に貼り付けられていると共に、前記補強板に、前記開口部に挿通された筒状部材が接合されていることを特徴とする請求項1記載の部材の補強構造。 The reinforcing target member have a opening through over the first surface, wherein the mutually opposing, together with the reinforcing plate is adhered to the periphery of the opening, the reinforcing plate, the opening The reinforcing structure for a member according to claim 1, wherein a cylindrical member inserted through is joined . 補強対象部材の両側から、その断面表面形状に沿って屈曲された補強板を貼り付けると共に、前記補強対象部材の前記両側の互いに対向する位置にて、前記補強板の端部近傍を前記補強対象部材の表面に定着部材によって定着した部材の補強構造であって、
前記補強対象部材は前記両側に亘って貫通する開口部を有し、前記補強板は前記開口部の周辺に貼り付けられ、
前記補強板に、前記開口部を跨ぐように切り込みが設けられていることを特徴とする補強構造。
A reinforcing plate bent along the cross-sectional surface shape is affixed from both sides of the reinforcing target member, and the vicinity of the end of the reinforcing plate is positioned near the reinforcing target member at positions facing each other on both sides of the reinforcing target member. A reinforcing structure of a member fixed on the surface of the member by a fixing member,
The reinforcing object member has an opening penetrating over both sides, and the reinforcing plate is attached to the periphery of the opening,
The reinforcing structure is characterized in that a cut is provided in the reinforcing plate so as to straddle the opening.
2枚の補強板をU字型に組み合わせて、矩形の断面形状を有する補強対象部材の3面に跨るように貼り付けてなる部材の補強構造であって、
前記2枚の補強板は、前記補強対象部材の互いに対向する表面のうちの一方の表面からこれに隣接する表面に沿って貼り付けられた第1の補強板と、前記互いに対向する他方の表面に沿って貼り付けられた第2の補強板とからなり、
前記第1及び第2の補強板は、前記一方の表面に隣接する表面の前記一方の表面とは反対側の端部近傍で前記補強対象部材に定着部材で定着されており、
前記第1の補強板と前記第2の補強板とが前記他方の表面上でボルト接合されていることを特徴とする部材の補強構造。
A reinforcing structure for a member formed by combining two reinforcing plates in a U-shape and pasting them over three surfaces of a reinforcing target member having a rectangular cross-sectional shape,
The two reinforcing plates include a first reinforcing plate attached along a surface adjacent to one of the mutually opposing surfaces of the member to be reinforced, and the other opposing surface And a second reinforcing plate pasted along
The first and second reinforcing plates are fixed to the reinforcing object member by a fixing member in the vicinity of the end opposite to the one surface of the surface adjacent to the one surface ,
A reinforcing structure for a member, wherein the first reinforcing plate and the second reinforcing plate are bolted on the other surface.
矩形の断面形状を有する補強対象部材の両側から、その断面表面形状に沿って屈曲された、略L型の断面形状を有する鋼板からなる補強板を貼り付けると共に、前記補強対象部材の前記両側の互いに対向する位置にて、前記補強板の端部近傍を前記補強対象部材の表面に定着部材によって定着する部材の補強方法であって、
前記補強板を、補強対象部材の互いに対向する第1の表面から、それらの表面に隣接する第2の表面に沿って貼り付け、前記第2の表面上において互いに接続することなく、前記第1の表面に前記定着部材により定着することを特徴とする部材の補強方法。
A reinforcing plate made of a steel plate having a substantially L-shaped cross-sectional shape, which is bent along the cross-sectional surface shape, is attached from both sides of the reinforcing target member having a rectangular cross-sectional shape, and on both sides of the reinforcing target member together at opposing positions, a method for reinforcing parts material you fixed by the fixing member end portion of the reinforcing plate to the surface of the reinforcement object member,
The reinforcing plate is attached from the first surface of the member to be reinforced facing each other along the second surface adjacent to the surface, and the first plate is connected to the first surface without being connected to each other. The member is fixed to the surface by the fixing member .
JP2003315522A 2003-09-08 2003-09-08 Member reinforcement structure and member reinforcement method Expired - Fee Related JP4172364B2 (en)

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