JP7172488B2

JP7172488B2 - Energy-absorbing devices and load-bearing walls with energy-absorbing devices

Info

Publication number: JP7172488B2
Application number: JP2018216146A
Authority: JP
Inventors: 綾那久積; 信孝清水; 圭一佐藤
Original assignee: Nippon Steel Corp
Current assignee: Nippon Steel Corp
Priority date: 2018-11-19
Filing date: 2018-11-19
Publication date: 2022-11-16
Anticipated expiration: 2038-11-19
Also published as: JP2020084440A

Description

本発明は、エネルギー吸収デバイスおよびエネルギー吸収デバイス付き耐力壁に関する。 The present invention relates to energy absorbing devices and load-bearing walls with energy absorbing devices.

プレファブ住宅等の小規模建築において、耐震安全性を高めるために、鉛直構面（柱梁、耐力壁など）や水平構面（基礎免震など）にエネルギー吸収デバイスが適用されることが多い。 Energy absorption devices are often applied to vertical structural surfaces (columns and beams, load-bearing walls, etc.) and horizontal structural surfaces (foundation seismic isolation, etc.) in order to improve seismic safety in small-scale buildings such as prefabricated houses.

地震時においてエネルギー吸収による制震作用を簡素な構造で効果的に実現するものとして、例えば、特許文献１および特許文献２に記載の技術が知られている。
特許文献１に記載の建物制震構造は、左拘束部と右拘束部との間に配置されたＵ字形弾塑性ダンパーが、Ｕ字状湾曲部を上又は下に位置させた姿勢状態で、左側対向辺部が左拘束部に沿って連結されるとともに、右側対向辺部が右拘束部に沿って連結される。
このような建物制震構造は、地震時に上階と下階とが互いに相対変位する層間変位によって、Ｕ字形弾塑性ダンパーが、左右の拘束部の両拘束面により左右の対向辺部の左右方向への変形が拘束されたまま、Ｕ字状湾曲部の位置を移動させていく弾塑性変形をすることで、地震時にエネルギー吸収できるものとなっている。 Techniques described in Patent Documents 1 and 2, for example, are known as methods for effectively realizing a damping action by absorbing energy in an earthquake with a simple structure.
In the building damping structure described in Patent Document 1, a U-shaped elasto-plastic damper disposed between the left restraint part and the right restraint part is in a posture state in which the U-shaped curved part is positioned upward or downward, The left facing side is connected along the left restraining portion, and the right facing side is connected along the right restraining portion.
In such a building seismic control structure, the upper and lower floors are displaced relative to each other during an earthquake. By performing elasto-plastic deformation that moves the position of the U-shaped curved portion while the deformation is restrained, it is possible to absorb energy at the time of an earthquake.

また、特許文献２に記載の耐震壁構造は、エネルギー吸収デバイスが構面内に設けられる耐震壁構造であって、横枠及び縦枠を組み合わせた枠体と、前記枠体の内部に設けられてエネルギー吸収デバイスとなるＵ形部材と、前記Ｕ形部材が前記枠体の内部で支持される支持材とを備え、前記Ｕ形部材は、断面方向で略Ｕ形状に形成されて、湾曲部と、前記湾曲部の両端部から連続して延びる一対の中間部と、一対の前記中間部の端部から連続して延びる一対の固定部とを有して、断面直交方向に作用する力に抵抗するものとして、前記支持材に取り付けられるものとなっている。
このような耐震壁構造では、断面直交方向に作用する力に抵抗するＵ形部材とすることで、Ｕ形部材の断面直交方向の変形が抑制されて、地震時に安定したエネルギー吸収性能を発揮させることが可能となる。 Further, the earthquake-resistant wall structure described in Patent Document 2 is an earthquake-resistant wall structure in which an energy absorption device is provided in the structure plane, and includes a frame body that combines a horizontal frame and a vertical frame, and a frame body that is provided inside the frame body. and a support member for supporting the U-shaped member inside the frame. and a pair of intermediate portions extending continuously from both ends of the curved portion, and a pair of fixed portions extending continuously from the ends of the pair of intermediate portions, and are resistant to forces acting in the cross-sectional orthogonal direction. As a resist, it is attached to the support.
In such a seismic wall structure, by using U-shaped members that resist the force acting in the direction perpendicular to the cross section, the deformation of the U-shaped member in the direction perpendicular to the cross section is suppressed, and stable energy absorption performance is exhibited during an earthquake. becomes possible.

特開２００９－２７０３３６号公報JP 2009-270336 A 特開２０１７－６１８０８号公報Japanese Patent Application Laid-Open No. 2017-61808

ところで、耐力壁のエネルギー吸収性能を合理的に発揮させるには耐力壁としての剛性を十分に確保する必要がある。耐力壁の剛性を確保するには、エネルギー吸収部材（エネルギー吸収デバイス）の周辺構成部材の板厚を大きくするか、部品点数を増やす方法が最も簡便であるが、コスト、施工性の観点から部品点数、鋼重量を顕著に増やすことは合理的ではない。
また、近年では狭小地に建設される住宅やプランの自由度をあげるためにも、細幅の耐力壁のニーズも高まっているが、単純に耐力壁の幅を狭めるだけでは、デバイスの効きが悪くなる場合が多く、また耐力壁としての剛性が急激に低下する。 By the way, in order to rationally exhibit the energy absorption performance of the load-bearing wall, it is necessary to ensure sufficient rigidity as the load-bearing wall. In order to secure the rigidity of the load-bearing wall, the simplest method is to increase the thickness of the surrounding structural members of the energy absorbing member (energy absorbing device) or increase the number of parts. It is not reasonable to significantly increase points and steel weight.
In recent years, the need for narrow load-bearing walls has also increased in order to increase the degree of freedom in designing houses built on narrow plots of land. In many cases, it deteriorates, and the rigidity as a load-bearing wall decreases rapidly.

本発明は、前記事情に鑑みてなされたもので、周辺構成部材の板厚を大きくしたり、部品点数を増やしたり、さらには壁重量を大きくすることなく、耐力壁としての剛性を確保しつつ、合理的にエネルギー吸収デバイスのエネルギー吸収性能を発揮させることができるエネルギー吸収デバイスおよびエネルギー吸収デバイス付き耐力壁を提供することを目的とする。 The present invention has been made in view of the above circumstances, and the rigidity as a load-bearing wall can be secured without increasing the thickness of the peripheral structural members, increasing the number of parts, or increasing the weight of the wall. SUMMARY OF THE INVENTION An object of the present invention is to provide an energy absorbing device and a load-bearing wall with an energy absorbing device that can rationally exhibit the energy absorbing performance of the energy absorbing device.

前記目的を達成するために、本発明のエネルギー吸収デバイスは、耐力壁に設けられるエネルギー吸収デバイスであって、
断面方向で略Ｕ字形状に形成されたＵ形部材を備え、
前記Ｕ形部材は、湾曲部と、この湾曲部の両端部からそれぞれ連続して延びる一対の変形部と、当該一対の変形部の端部からそれぞれ連続して延びる一対の連結部とを備え、
一対の前記連結部に、それぞれ当該連結部が延びる方向と直交する方向に連続して延びる固定部が設けられ、
前記固定部は前記連結部にそれぞれ前記断面方向と直交する方向に対向離間して一対ずつ設けられて、前記耐力壁に直接または間接的に固定されることを特徴とする。
ここで、前記断面方向と直交する方向とは、前記断面方向と直交する方向を前記連結部の幅方向とすると、当該幅方向のことを言う。 To achieve the above object, the energy absorption device of the present invention is an energy absorption device provided on a load-bearing wall,
A U-shaped member formed in a substantially U-shape in a cross-sectional direction,
The U-shaped member includes a curved portion, a pair of deformation portions extending continuously from both ends of the curved portion, and a pair of connecting portions extending continuously from the ends of the pair of deformation portions,
A fixing portion extending continuously in a direction perpendicular to the direction in which the connecting portions extend is provided on each of the pair of connecting portions,
A pair of the fixing portions are provided on the connecting portion so as to face each other in a direction orthogonal to the cross-sectional direction, and are directly or indirectly fixed to the load-bearing wall.
Here, the direction orthogonal to the cross-sectional direction refers to the width direction when the direction orthogonal to the cross-sectional direction is the width direction of the connecting portion.

本発明においては、エネルギー吸収デバイスの一対の前記連結部に、それぞれ当該連結部が延びる方向と直交する方向に連続して延びる固定部が設けられ、当該固定部は連結部にそれぞれ前記断面方向と直交する方向に対向離間して一対ずつ設けられて、耐力壁に直接または間接的に固定されるので、耐力壁を構成する柱の面外局所変形を抑制できる。したがって、周辺構成部材の板厚を大きくしたり、部品点数を増やしたり、さらには壁重量を大きくすることなく、耐力壁としての剛性を確保することが可能となり、合理的にエネルギー吸収デバイスのエネルギー吸収性能を発揮できる。 In the present invention, the pair of connecting portions of the energy absorption device are provided with fixing portions that extend continuously in a direction orthogonal to the direction in which the connecting portions extend, and the fixing portions are attached to the connecting portions in the cross-sectional direction. Since each pair is provided spaced apart from each other in the orthogonal direction and directly or indirectly fixed to the load-bearing wall, local out-of-plane deformation of the pillars constituting the load-bearing wall can be suppressed. Therefore, it is possible to ensure the rigidity of the load-bearing wall without increasing the thickness of the surrounding structural members, increasing the number of parts, or increasing the weight of the wall. Absorption performance can be exhibited.

また、本発明の前記構成において、前記断面方向における前記固定部の端と、前記連結部の端とが等しい位置にあり、
前記断面方向における前記固定部の長さ寸法が、前記湾曲部の頂部と前記変形部の端部との間の距離と等しくなっていてもよい。 Further, in the configuration of the present invention, the end of the fixing portion and the end of the connecting portion in the cross-sectional direction are at the same position,
A length dimension of the fixed portion in the cross-sectional direction may be equal to a distance between a top portion of the curved portion and an end portion of the deformable portion.

このような構成によれば、所定の板厚を有する鋼板から効率的にエネルギー吸収デバイスを展開した展開部材を切り出すことができる。
つまり、一体的に形成されたエネルギー吸収デバイスは、展開することによって、一方の連結部および当該連結部を挟むようにして設けられた一方の一対の固定部からなる第１長方形板部と、他方の連結部および当該連結部を挟むようにして設けられた他方の一対の固定部からなる第２長方形板部と、長方形状に伸ばされた湾曲部および当該湾曲部を挟むようにして設けられた一対の変形部からなり、かつ、前記第１長方形板部と第２長方形板部とを接続する長方形板状の第３長方形板部とから構成されている。
そして、前記固定部の長さ寸法が、前記湾曲部の頂部と前記変形部の端部との間の距離と等しくなっているので、第１長方形板部と第２長方形板部との間の距離は、第１長方形板部と第２長方形板部のそれぞれ短辺の２倍の長さとなる。
したがって、第１長方形板部と第２長方形板部との間に、他の異なる一方のエネルギー吸収デバイスを展開してなる展開部材の第１長方形板部と、他の異なる他方のエネルギー吸収デバイスを展開してなる展開部材の第２長方形板部とを並べるようにして配置し、さらに、一方向に連続して展開部材を配置するとともに、一方向と直交する直交方法に展開部材を第１長方形板部の短辺（第２長方形板部の短辺）の長さに相当する寸法だけずらして配置することによって、展開部材を切り出すための鋼板に、当該展開部材を密に配置することができる。したがって、当該展開部材を鋼板から切り出すことによって、鋼板から効率的にエネルギー吸収デバイスを展開した展開部材を切り出すことができる。 According to such a configuration, it is possible to efficiently cut out a deployment member in which the energy absorption device is deployed from a steel plate having a predetermined thickness.
In other words, the integrally formed energy absorption device is expanded to include a first rectangular plate portion including one connecting portion and a pair of fixing portions provided so as to sandwich the connecting portion, and the other connecting portion. and a second rectangular plate portion comprising the other pair of fixed portions provided so as to sandwich the connecting portion, a curved portion extending in a rectangular shape, and a pair of deformation portions provided so as to sandwich the curved portion. and a third rectangular plate portion connecting the first rectangular plate portion and the second rectangular plate portion.
Further, since the length dimension of the fixed portion is equal to the distance between the top portion of the curved portion and the end portion of the deformed portion, the distance between the first rectangular plate portion and the second rectangular plate portion is The distance is twice the length of the short side of each of the first rectangular plate portion and the second rectangular plate portion.
Therefore, between the first rectangular plate portion and the second rectangular plate portion, the first rectangular plate portion of the deployment member formed by deploying another different energy absorption device and the other different energy absorption device are placed. The second rectangular plate portion of the deployed member is arranged side by side, and further, the deployed member is arranged continuously in one direction, and the deployed member is arranged in an orthogonal manner orthogonal to the one direction to form the first rectangular plate. By displacing the plates by a dimension corresponding to the length of the short side of the plate portion (the short side of the second rectangular plate portion), the deployment members can be densely arranged on the steel plate from which the deployment members are cut. . Therefore, by cutting the deployment member from the steel plate, the deployment member with the energy absorption device deployed can be efficiently cut out from the steel plate.

また、本発明のエネルギー吸収デバイス付き耐力壁は、前記エネルギー吸収デバイスと、耐力壁とを備えたエネルギー吸収デバイス付き耐力壁であって、
前記耐力壁は、一対の柱と、当該一対の柱の対向する面のそれぞれから対となって突出して設けられ締結部とを備え、
前記エネルギー吸収デバイスが一対の前記柱の間に配置され、当該エネルギー吸収デバイスの４つの前記固定部がそれぞれ４つの前記締結部に固定されていることを特徴とする。 Further, a load-bearing wall with an energy absorption device of the present invention is a load-bearing wall with an energy absorption device comprising the energy absorption device and a load-bearing wall,
The load-bearing wall comprises a pair of pillars and a pair of fastening portions protruding from respective opposing surfaces of the pair of pillars,
The energy absorption device is arranged between the pair of pillars, and the four fixing portions of the energy absorption device are fixed to the four fastening portions, respectively.

本発明においては、エネルギー吸収デバイスの固定部が連結部からそれぞれ、当該連結部が延びる方向と直交する方向に連続して延び、さらに固定部は連結部にそれぞれ前記断面方向と直交する方向に対向離間して一対ずつ設けられ、耐力壁は、一対の柱と、当該一対の柱の対向する面のそれぞれから対となって突出して設けられ締結部とを備え、前記エネルギー吸収デバイスが一対の前記柱の間に配置され、当該エネルギー吸収デバイスの４つの前記固定部がそれぞれ４つの前記締結部に固定されることによって、エネルギー吸収デバイスの固定部が締結部を介して一対の柱に間接的に固定されるので、耐力壁を構成する柱の面外局所変形を抑制できる。したがって、周辺構成部材の板厚を大きくしたり、部品点数を増やしたり、さらには壁重量を大きくすることなく、耐力壁としての剛性を確保することが可能となり、合理的にエネルギー吸収デバイスのエネルギー吸収性能を発揮できる。 In the present invention, the fixing portions of the energy absorbing device extend continuously from the connecting portions in a direction perpendicular to the direction in which the connecting portions extend, and the fixing portions face the connecting portions in a direction perpendicular to the cross-sectional direction. A pair of the load-bearing walls are provided spaced apart from each other, the load-bearing walls include a pair of pillars and fastening portions protruding in pairs from the opposing surfaces of the pair of pillars, and the energy absorption device is connected to the pair of the The energy absorption device is arranged between the pillars, and the four fixing parts of the energy absorption device are fixed to the four fastening parts, respectively, so that the fixing parts of the energy absorption device are indirectly attached to the pair of pillars through the fastening parts. Since it is fixed, it is possible to suppress out-of-plane local deformation of the columns that constitute the load-bearing wall. Therefore, it is possible to ensure the rigidity of the load-bearing wall without increasing the thickness of the surrounding structural members, increasing the number of parts, or increasing the weight of the wall. Absorption performance can be exhibited.

また、本発明の別のエネルギー吸収デバイス付き耐力壁は、前記エネルギー吸収デバイスと、耐力壁とを備えたエネルギー吸収デバイス付き耐力壁であって、
前記耐力壁は対向する面を有する一対の柱を備え、
前記エネルギー吸収デバイスが一対の前記柱の間に配置され、
前記エネルギー吸収デバイスの一方側の一対の前記固定部が一方の柱の対向する面に固定され、他方側の一対の前記固定部が他方の柱の対向する面に固定されていてもよい。 Another load-bearing wall with an energy absorption device of the present invention is a load-bearing wall with an energy absorption device comprising the energy absorption device and a load-bearing wall,
the bearing wall comprising a pair of posts having opposing faces;
the energy absorbing device is positioned between a pair of the pillars;
The pair of fixing portions on one side of the energy absorption device may be fixed to the opposing surfaces of one column, and the pair of fixing portions on the other side may be fixed to the opposing surfaces of the other column.

本発明においては、エネルギー吸収デバイスの固定部が連結部からそれぞれ、当該連結部が延びる方向と直交する方向に連続して延び、さらに固定部は連結部にそれぞれ前記断面方向と直交する方向に対向離間して一対ずつ設けられ、耐力壁は、一対の柱を備え、前記エネルギー吸収デバイスが一対の前記柱の間に配置され、前記エネルギー吸収デバイスの一方側の一対の前記固定部が一方の柱の対向する面に固定され、他方側の一対の前記固定部が他方の柱の対向する面に固定されることによって、エネルギー吸収デバイスの固定部が一対の柱に直接固定されるので、耐力壁を構成する柱の面外局所変形を抑制できる。したがって、周辺構成部材の板厚を大きくしたり、部品点数を増やしたり、さらには壁重量を大きくすることなく、耐力壁としての剛性を確保することが可能となり、合理的にエネルギー吸収デバイスのエネルギー吸収性能を発揮できる。 In the present invention, the fixing portions of the energy absorbing device extend continuously from the connecting portions in a direction perpendicular to the direction in which the connecting portions extend, and the fixing portions face the connecting portions in a direction perpendicular to the cross-sectional direction. The load-bearing walls are spaced apart in pairs, the load-bearing walls comprising a pair of pillars, the energy absorbing device being disposed between the pair of pillars, and the pair of fixing portions on one side of the energy absorbing device being attached to one of the pillars. and the pair of fixing portions on the other side are fixed to the opposing surfaces of the other pillar, so that the fixing portion of the energy absorbing device is directly fixed to the pair of pillars. It is possible to suppress the out-of-plane local deformation of the columns that constitute the Therefore, it is possible to ensure the rigidity of the load-bearing wall without increasing the thickness of the surrounding structural members, increasing the number of parts, or increasing the weight of the wall. Absorption performance can be exhibited.

また、本発明の前記構成において、前記一対の柱の芯間寸法と前記耐力壁の壁高さの比率が、１：６以上となっていてもよい。 Further, in the above configuration of the present invention, the ratio of the center-to-center dimension of the pair of pillars and the wall height of the load-bearing wall may be 1:6 or more.

このような構成によれば、細幅耐力壁においても高剛性を発揮し、合理的にエネルギー吸収デバイスのエネルギー吸収性能を発揮できる。 According to such a configuration, high rigidity can be exhibited even in the narrow load-bearing wall, and the energy absorption performance of the energy absorption device can be rationally exhibited.

本発明によれば、周辺構成部材の板厚を大きくしたり、部品点数を増やしたり、さらには壁重量を大きくすることなく、耐力壁としての剛性を確保しつつ、合理的にエネルギー吸収デバイスのエネルギー吸収性能を発揮させることができる。 According to the present invention, the energy absorption device can be rationally constructed while securing the rigidity as a load-bearing wall without increasing the plate thickness of the peripheral constituent members, increasing the number of parts, or increasing the wall weight. Energy absorption performance can be demonstrated.

本発明の第１の実施の形態に係るエネルギー吸収デバイスを示す斜視図である。1 is a perspective view showing an energy absorption device according to a first embodiment of the invention; FIG. 本発明の第１の実施の形態に係るエネルギー吸収デバイス付き耐力壁を示すもので、（ａ）は斜視図、（ｂ）は（ａ）におけるＸ楕円部の拡大図である。1 shows a load-bearing wall with an energy absorbing device according to a first embodiment of the present invention, (a) is a perspective view, and (b) is an enlarged view of an X elliptical portion in (a). 図２（ａ）におけるＡ－Ａ線断面図である。FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2(a); 本発明の第１の実施の形態に係るエネルギー吸収デバイス付き耐力壁を示す正面図である。1 is a front view showing a load-bearing wall with an energy absorbing device according to a first embodiment of the invention; FIG. 本発明の第１の実施の形態に係るエネルギー吸収デバイスの展開図である。1 is an exploded view of an energy absorption device according to a first embodiment of the present invention; FIG. 本発明の第１の実施の形態に係るエネルギー吸収デバイスの展開部材を鋼板から切り出す方法を説明するための図である。FIG. 4 is a diagram for explaining a method of cutting out a deployment member of the energy absorption device according to the first embodiment of the present invention from a steel plate; 本発明の第１の実施の形態に係るエネルギー吸収デバイス付き耐力壁の第１変形例を示す平断面図である。FIG. 4 is a plan cross-sectional view showing a first modification of the load-bearing wall with an energy absorbing device according to the first embodiment of the present invention; 本発明の第１の実施の形態に係るエネルギー吸収デバイス付き耐力壁の第２変形例を示す平断面図である。FIG. 10 is a cross-sectional plan view showing a second modification of the load-bearing wall with an energy absorbing device according to the first embodiment of the present invention; 本発明の第１の実施の形態に係るエネルギー吸収デバイス付き耐力壁の第３変形例を示す平断面図である。FIG. 11 is a plan cross-sectional view showing a third modification of the load-bearing wall with an energy absorbing device according to the first embodiment of the present invention; 本発明の第２の実施の形態に係るエネルギー吸収デバイス付き耐力壁を示すもので、（ａ）は斜視図、（ｂ）は（ａ）におけるＸ円部の拡大図である。FIG. 10 shows a load-bearing wall with an energy absorption device according to a second embodiment of the present invention, (a) is a perspective view, and (b) is an enlarged view of the X circle portion in (a). 図１０（ａ）におけるＡ－Ａ線断面図である。FIG. 10(a) is a cross-sectional view taken along line AA in FIG. 10(a); 本発明の第２の実施の形態に係るエネルギー吸収デバイス付き耐力壁の変形例を示す平断面図である。FIG. 10 is a cross-sectional plan view showing a modification of the load-bearing wall with an energy absorbing device according to the second embodiment of the present invention; 本発明に係る解析モデルを示す図である。It is a figure which shows the analysis model which concerns on this invention. 既往技術に係る解析モデルを示す図である。It is a figure which shows the analysis model which concerns on a prior art. 解析モデルに水平力を加えた状態を示す図である。It is a figure which shows the state which applied horizontal force to the analytical model. 解析結果における水平力Ｑ－層間変形量Δ関係を示すグラフである。4 is a graph showing the relationship between horizontal force Q and interlayer deformation amount Δ in analysis results. 既往技術におけるＭｉｓｅｓ応力コンタ図である。It is a Mises stress contour figure in a conventional technique. 本発明におけるＭｉｓｅｓ応力コンタ図である。It is a Mises stress contour figure in this invention.

以下、図面を参照しながら本発明の実施の形態について説明する。
（第１の実施の形態）
図１は、第１の実施の形態のエネルギー吸収デバイス１０を示す斜視図、図２はエネルギー吸収デバイス１０が設けられた耐力壁３０を示す図、図３は図２（ａ）におけるＡ－Ａ線断面図である。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
1 is a perspective view showing the energy absorbing device 10 of the first embodiment, FIG. 2 is a drawing showing a bearing wall 30 provided with the energy absorbing device 10, and FIG. 3 is AA in FIG. 2(a). It is a line sectional view.

図１～図３に示すように、エネルギー吸収デバイス１０は耐力壁３０に設けられるものであり、所定形状の平坦な鋼板を折り曲げ成形することによって一体的に形成されている。
エネルギー吸収デバイス１０は、図１に示すように、断面方向（図１では上下方向）で略Ｕ字形状に形成されたＵ形部材１１を備えている。Ｕ形部材１１は、長方形状の帯板をＵ形に折り曲げて形成されたものであり、上側に凸の湾曲部１２と、この湾曲部１２の両端部からそれぞれ下方に連続して平行に延びる一対の変形部１３，１３と、当該一対の変形部１３，１３の端部（下端部）からそれぞれ下方に連続して平行に延びる一対の連結部１４，１４とを備えている。 As shown in FIGS. 1 to 3, the energy absorbing device 10 is provided on the load-bearing wall 30, and is integrally formed by bending a flat steel plate having a predetermined shape.
The energy absorption device 10, as shown in FIG. 1, includes a U-shaped member 11 formed in a substantially U shape in a cross-sectional direction (vertical direction in FIG. 1). The U-shaped member 11 is formed by bending a rectangular band plate into a U-shape, and includes an upwardly convex curved portion 12 and both ends of the curved portion 12 extending downward continuously in parallel. It has a pair of deformation portions 13 and 13 and a pair of connection portions 14 and 14 extending downward continuously in parallel from ends (lower ends) of the pair of deformation portions 13 and 13 .

湾曲部１２は断面略半円弧状に形成されている。また、変形部１３と連結部１４とは上下に連続する長方形板状に形成されている。Ｕ形部材１１は、長方形状の帯板をＵ形に折り曲げて形成されたものであるから、湾曲部１２、変形部１３および連結部１４の幅方向Ｗの寸法Ｓは等しくなっている。
なお、湾曲部１２を断面略半円弧状に形成するとともに、変形部１３，１３を長方形板状に形成することに代えて、湾曲部１２と変形部１３，１３とを断面方向において略半楕円形状に形成してもよい。 The curved portion 12 is formed to have a substantially semicircular cross section. Further, the deformation portion 13 and the connecting portion 14 are formed in a rectangular plate shape that is continuous vertically. Since the U-shaped member 11 is formed by bending a rectangular band plate into a U-shape, the dimension S in the width direction W of the curved portion 12, the deformed portion 13 and the connecting portion 14 is the same.
Instead of forming the bending portion 12 in a substantially semicircular arc shape in cross section and forming the deforming portions 13 and 13 in a rectangular plate shape, the bending portion 12 and the deforming portions 13 and 13 are substantially semi-elliptical in the cross-sectional direction. It may be formed into a shape.

また、一対の連結部１４，１４に、それぞれ当該連結部１４，１４が延びる方向（図１において上下方向）と直交する方向（図１において左右方向）に連続して延びる長方形板状の固定部１５が設けられている。
固定部１５は連結部１４にそれぞれ前記断面方向（図１において上下方向）と直交する方向（図１において連結部１４の幅方向Ｗ）に対向離間して一対ずつ設けられている。したがって、固定部１５は合計２対（４つ）あり、一方の一対の固定部１５，１５はその側面を対向させた状態で、一方の連結部１４の上下に沿う両縁部に一体的に設けられ、他方の一対の固定部１５，１５はその側面を対向させた状態で、他方の連結部１４の上下に沿う両縁部に一体的に設けられている。
また、固定部１５と連結部１４の高さは等しくなっており、連結部１４の高さ方向に沿う縁部全体に固定部１５の高さ方向に沿う縁部全体が連結されている。 A pair of connecting portions 14, 14 has a rectangular plate-shaped fixing portion that extends continuously in a direction (horizontal direction in FIG. 1) perpendicular to the direction in which the connecting portions 14, 14 extend (vertical direction in FIG. 1). 15 are provided.
The fixed portions 15 are provided in pairs on the connecting portion 14 so as to be opposed to each other in a direction (the width direction W of the connecting portion 14 in FIG. 1) perpendicular to the cross-sectional direction (vertical direction in FIG. 1). Therefore, there are a total of two pairs (four) of fixing portions 15, and one pair of fixing portions 15, 15 are integrally attached to both edges along the top and bottom of one connecting portion 14 with their side faces facing each other. The other pair of fixing portions 15, 15 are integrally provided on both edges along the upper and lower sides of the other connecting portion 14 with their side faces facing each other.
In addition, the fixed portion 15 and the connecting portion 14 have the same height, and the entire edge portion along the height direction of the fixing portion 15 is connected to the entire edge portion along the height direction of the connecting portion 14 .

また、前記断面方向（図１おいて上下方向）における固定部１５の下端と、連結部１４の下端とが等しい位置にあり、前記断面方向における固定部１５の長さ寸法Ｌ１が、湾曲部１２の頂部と変形部１３の下端部との間の距離Ｌ２と等しくなっている。つまりＬ１＝ａとすると、Ｌ１＝Ｌ２＝ａとなっている。 In addition, the lower end of the fixing portion 15 and the lower end of the connecting portion 14 in the cross-sectional direction (vertical direction in FIG. 1) are at the same position, and the length L1 of the fixing portion 15 in the cross-sectional direction is equal to that of the curved portion 12 . is equal to the distance L2 between the top of the deformed portion 13 and the lower end of the deformed portion 13 . That is, if L1=a, then L1=L2=a.

このような構成のエネルギー吸収デバイス１０は、上述したように、所定形状の平坦な鋼板を折り曲げ成形することによって一体的に形成されたものである。
すなわち、図５に示すように、エネルギー吸収デバイス１０を展開してなる展開部材１０ａは、一方の連結部１４および当該連結部１４を挟むようにして設けられた一方の一対の固定部１５，１５からなる第１長方形板部２１と、他方の連結部１４および当該連結部１４を挟むようにして設けられた他方の一対の固定部１５，１５からなる第２長方形板部２２と、長方形状に伸ばされた湾曲部１２および当該湾曲部１２を挟むようにして設けられた一対の変形部１３，１３からなる長方形板状の第３長方形板部２３とから構成されている。
第１長方形板部２１と第２長方形板部２２とは第３長方形板部２３によって接続され、展開部材１０ａは略エ字形に形成されている。 The energy absorbing device 10 having such a configuration is integrally formed by bending a flat steel plate having a predetermined shape, as described above.
That is, as shown in FIG. 5, a deployment member 10a formed by deploying the energy absorption device 10 is composed of one connecting portion 14 and one pair of fixing portions 15, 15 provided so as to sandwich the connecting portion 14. A first rectangular plate portion 21, a second rectangular plate portion 22 consisting of the other connecting portion 14 and the other pair of fixing portions 15, 15 provided so as to sandwich the connecting portion 14, and a curved portion extending into a rectangular shape. It is composed of the portion 12 and a third rectangular plate portion 23 having a rectangular plate shape and having a pair of deformation portions 13, 13 provided so as to sandwich the curved portion 12 therebetween.
The first rectangular plate portion 21 and the second rectangular plate portion 22 are connected by a third rectangular plate portion 23, and the deployment member 10a is formed in a substantially V shape.

そして、固定部１５の長さ寸法Ｌ１（＝ａ）が、湾曲部１２の頂部と変形部１３の下端部との間の距離Ｌ２（＝ａ）と等しくなっているので、第１長方形板部２１と第２長方形板部２２との間の距離Ｌ３は、第１長方形板部２１と第２長方形板部２２のそれぞれ短辺の長さ、つまり固定部１５の長さ寸法Ｌ１の２倍の長さ２ａとなる。
したがって、図６に示すように、あるエネルギー吸収デバイス１０を展開してなる展開部材１０ａの第１長方形板部２１と第２長方形板部２２との間に、他の異なる一方のエネルギー吸収デバイス１０を展開してなる展開部材１０ａの第１長方形板部２１と他の異なる他方のエネルギー吸収デバイス１０を展開してなる展開部材１０ａの第２長方形板部２２とを並べるようにして配置し、さらに、図６において上下方向に連続して展開部材１０ａを配置するとともに、左右方向に展開部材１０ａを第１長方形板部２１の短辺（第２長方形板部２２の短辺）の長さに相当する寸法だけずらして配置することによって、展開部材１０ａを切り出すための鋼板Ｋに、当該展開部材１０ａを密に配置することができる。したがって、当該展開部材１０ａを鋼板Ｋから切り出すことによって、鋼板Ｋから効率的にエネルギー吸収デバイス１０を展開した展開部材１０ａを切り出すことができる。 Since the length L1 (=a) of the fixed portion 15 is equal to the distance L2 (=a) between the top portion of the curved portion 12 and the lower end portion of the deformable portion 13, the first rectangular plate portion The distance L3 between 21 and the second rectangular plate portion 22 is twice the length of the short sides of the first rectangular plate portion 21 and the second rectangular plate portion 22, that is, the length dimension L1 of the fixing portion 15. It has a length of 2a.
Therefore, as shown in FIG. 6, between the first rectangular plate portion 21 and the second rectangular plate portion 22 of the deployment member 10a formed by deploying a certain energy absorption device 10, another energy absorption device 10 and the second rectangular plate portion 22 of the deployment member 10a obtained by deploying the other energy absorption device 10 are arranged side by side, and 6, the deployable members 10a are arranged continuously in the vertical direction, and the deployable members 10a in the horizontal direction correspond to the length of the short side of the first rectangular plate portion 21 (the short side of the second rectangular plate portion 22). The deployment members 10a can be arranged densely on the steel plate K from which the deployment members 10a are cut. Therefore, by cutting out the deployable member 10a from the steel plate K, the deployable member 10a having the energy absorbing device 10 deployed thereon can be efficiently cut out from the steel plate K. FIG.

このような展開部材１０ａは、図５に示すように、４つの固定部１５となる部分をそれぞれ折れ線２５で連結部１４となる部分に対して直角になるようにして折り曲げ加工するとともに、湾曲部１２となる部分を半円筒状に湾曲させるとともに、連結部１４，１４となる部分および変形部１３，１３となる部分をそれぞれ平行離間させることによって、図１に示すようなエネルギー吸収デバイス１０となる。 As shown in FIG. 5, such a deployable member 10a is formed by bending four fixing portions 15 at right angles to connecting portions 14 along folding lines 25, and bending the curved portions. The energy absorption device 10 as shown in FIG. 1 is obtained by bending the portion 12 into a semi-cylindrical shape and separating the portions to be the connecting portions 14, 14 and the portions to be the deformation portions 13, 13 in parallel. .

さらに、展開部材１０ａは、固定部１５の変形部１３側の縁と、変形部１３の縁とが交わる部分がエッジとなっておらず、円弧となっている。したがって、展開部材１０ａを折り曲げ加工することによって形成されたエネルギー吸収デバイス１０では、図１に示すように、変形部１３と固定部１５とが交わる部分が滑らかな円弧面となって、応力が集中しないようになっている。 Further, in the deployment member 10a, the portion where the edge of the fixing portion 15 on the deforming portion 13 side and the edge of the deforming portion 13 intersect does not form an edge but forms an arc. Therefore, in the energy absorbing device 10 formed by bending the deployable member 10a, as shown in FIG. 1, the portion where the deformable portion 13 and the fixed portion 15 intersect becomes a smooth arcuate surface, and stress is concentrated. It is designed not to.

図２および図３に示すように、上述したようなエネルギー吸収デバイス１０を合計で６個、耐力壁３０に取り付けることによって、エネルギー吸収デバイス付き耐力壁３１となる。なお、耐力壁３０取り付けるエネルギーデバイス１０の個数、Ｕ形部材１１および固定部１５の板厚およびその他の寸法は上記と異なっていてもよい。
耐力壁３０は、角形鋼管で形成された左右一対の柱３２，３２と、当該一対の柱３２，３２の対向する面３２ａ，３２ａのそれぞれから対となって突出して設けられ締結部３３，３３と、柱３３，３３の上端部どうしおよび下端部どうしをそれぞれ連結する横枠３５，３５とを備えている。なお、耐力壁３０はその骨組が左右一対の柱３２，３２と横枠３５，３５とによって構成されるが、当該柱３２，３２の正面側および／または背面側に面材を取り付けることで、建物の外壁面や内壁面の一部を構成してもよい。 As shown in FIGS. 2 and 3, a total of six energy absorption devices 10 as described above are attached to a load-bearing wall 30 to form a load-bearing wall 31 with energy absorption devices. The number of energy devices 10 attached to the load-bearing wall 30, the thickness of the U-shaped member 11 and the fixing portion 15, and other dimensions may differ from those described above.
The load-bearing wall 30 includes a pair of left and right pillars 32, 32 formed of square steel pipes, and fastening portions 33, 33 which protrude in pairs from the opposing surfaces 32a, 32a of the pair of pillars 32, 32, respectively. and horizontal frames 35, 35 connecting the upper ends and the lower ends of the pillars 33, 33, respectively. The framework of the load-bearing wall 30 is composed of a pair of left and right pillars 32, 32 and lateral frames 35, 35. You may constitute a part of outer wall surface or inner wall surface of a building.

締結部３３は、鋼板によって矩形板状に形成され、その上下方向の寸法は、エネルギー吸収デバイス１０の固定部１５の高さ寸法の略２倍の長さと略等しくなっている。また、締結部３３の左右方向の基端部は柱３２の面３２ａの両側縁部にそれぞれ溶接によって結合され、締結部３３の表面と柱３２の表面とはほぼ面一となっている。なお、締結部３３の結合は溶接だけでなく、嵌合やボルト等他の結合方法を用いてもよい。
このような締結部３３は、柱３２，３２の上下方向の中央位置、この中央位置から上下にそれぞれ所定間隔で隔てた上側位置および下側位置に、それぞれ耐力壁３０の厚さ方向に一対ずつ、左右方向に一対ずつ、合計２対（合計４枚）設けられている。 The fastening portion 33 is formed of a steel plate in the shape of a rectangular plate, and its vertical dimension is approximately twice the height dimension of the fixing portion 15 of the energy absorption device 10 . In addition, the base ends in the left-right direction of the fastening portion 33 are welded to both side edges of the surface 32a of the column 32, and the surface of the fastening portion 33 and the surface of the column 32 are substantially flush with each other. It should be noted that the connection of the fastening portion 33 is not limited to welding, and other connection methods such as fitting and bolting may be used.
Such fastening portions 33 are arranged in pairs in the thickness direction of the load-bearing wall 30 at the central position in the vertical direction of the columns 32, 32, and at the upper and lower positions separated vertically from the central position by a predetermined interval. , and two pairs in total (four sheets in total) are provided.

また、左右一対の柱３２，３２の対向する面３２ａ，３２ａの間には、エネルギー吸収デバイス１０が合計６個、上下に配置されるとともに、前記中央位置、上側位置および下側位置に対応させて配置されている。
すなわちまず、柱３２，３２の上下方向の中央位置においては、上下一対のエネルギー吸収デバイス１０，１０がそれらのＵ形部材１１，１１の向きを互いに逆方向にして、上下に僅かな隙間をもって配置されているが、隙間がなく互いに当接されていてもよい。
また、柱３２，３２の前記中央位置から上下にそれぞれ所定間隔で隔てた上側位置および下側位置には、上下一対のエネルギー吸収デバイス１０，１０がそれらのＵ形部材１１，１１の向きを互いに逆方向にして、上下に僅かな隙間をもって配置されているが、隙間がなく互いに当接されていてもよい。上下一対のエネルギー吸収デバイス１０，１０のうち上側のエネルギー吸収デバイス１０は、その湾曲部１２を上側に向け配置され、下側のエネルギー吸収デバイス１０は、その湾曲部１２を下側に向けて配置されている。 A total of six energy absorption devices 10 are arranged vertically between the opposing surfaces 32a, 32a of the pair of left and right pillars 32, 32, corresponding to the central position, the upper position, and the lower position. are placed.
That is, first, at the center position in the vertical direction of the pillars 32, 32, a pair of upper and lower energy absorption devices 10, 10 are arranged with their U-shaped members 11, 11 directed in opposite directions with a slight vertical gap. However, they may be in contact with each other without a gap.
Also, a pair of upper and lower energy absorbing devices 10, 10 are provided at upper and lower positions separated vertically from the central position of the pillars 32, 32, respectively, with their U-shaped members 11, 11 facing each other. Although they are arranged in the opposite direction with a slight gap in the vertical direction, they may be in contact with each other without any gap. The upper energy absorption device 10 of the pair of upper and lower energy absorption devices 10, 10 is arranged with its curved portion 12 directed upward, and the lower energy absorption device 10 is arranged with its curved portion 12 directed downward. It is

また、図３に示すように、締結部３３，３３は柱３２の面３２ａの両側縁部からエネルギー吸収デバイス１０側に向けて延び、その先端部はエネルギー吸収デバイス１０の固定部１５，１５の基端部側に位置している。固定部１５，１５は、締結部３３，３３より内側に設けられ、固定部１５，１５の外側を向く面が締結部３３，３３の内側を向く面に当接されている。この状態で締結部３３，３３に固定部１５，１５が固定されている。この固定は、締結部３３，３３に固定部１５，１５を溶接によって固定してもよいし、ボルト止めやビスによって固定してもよい。
また、図２に示すように、柱３２，３２の中央位置、上側位置および下側位置においてそれぞれ４枚ずつ配置されている締結部３３に上下一対のエネルギー吸収デバイス１０，１０の８枚の固定部１５がそれぞれ固定されている。つまり、上下一対のエネルギー吸収デバイス１０，１０のうち上側のエネルギー吸収デバイス１０の４枚の固定部１５がそれぞれ４枚の締結部３３の略上半分に固定され、下側のエネルギー吸収デバイス１０の４枚の固定部１５がそれぞれ４枚の締結部３３の略下半分に固定されている。
なお、締結部３３を上下に分断し、分断された上側の４枚の締結部に上側のエネルギー吸収デバイス１０の４枚の固定部１５を固定し、分断された下側の４枚の締結部に下側のエネルギー吸収デバイス１０の４枚の固定部１５を固定してもよい。
また、締結部３３は、エネルギー吸収デバイス１０に対して必ずしも上下に１枚ずつ必要ではなく、上下１枚の締結部３３に、エネルギー吸収デバイス１０が上下２個以上配置されてもよい。 Further, as shown in FIG. 3, the fastening portions 33, 33 extend from both side edges of the surface 32a of the column 32 toward the energy absorbing device 10 side, and the distal end portions of the fixing portions 15, 15 of the energy absorbing device 10 are attached. Located on the proximal side. The fixed portions 15 , 15 are provided inside the fastening portions 33 , 33 , and the outwardly facing surfaces of the stationary portions 15 , 15 are in contact with the inwardly facing surfaces of the fastening portions 33 , 33 . The fixed portions 15, 15 are fixed to the fastening portions 33, 33 in this state. For this fixation, the fixed portions 15, 15 may be fixed to the fastening portions 33, 33 by welding, or may be fixed by bolting or screws.
Further, as shown in FIG. 2, eight upper and lower pairs of energy absorption devices 10, 10 are fixed to the fastening portions 33, which are arranged four each at the central position, the upper position, and the lower position of the pillars 32, 32. Each part 15 is fixed. That is, of the pair of upper and lower energy absorption devices 10, 10, the four fixing portions 15 of the upper energy absorption device 10 are fixed to substantially upper halves of the four fastening portions 33, respectively, and the lower energy absorption device 10 is fixed. The four fixing portions 15 are fixed to substantially lower halves of the four fastening portions 33, respectively.
In addition, the fastening portion 33 is divided vertically, the four fastening portions 15 of the upper energy absorption device 10 are fixed to the four fastening portions on the upper side, and the four fastening portions on the lower side are divided. The four fixing portions 15 of the lower energy absorption device 10 may be fixed to the .
Moreover, the fastening portions 33 are not necessarily required to be arranged one above and one below the energy absorption device 10 , and two or more energy absorption devices 10 may be arranged on each fastening portion 33 above and below.

また、本実施の形態では、左右一対の柱３２，３２の芯間寸法と耐力壁３０の壁高さの比率が、１：６となっており、耐力壁３０が細幅耐力壁となっているが、これより耐力壁３０を細幅に形成してもよい。この場合、左右一対の柱３２，３２の芯間寸法と耐力壁３０の壁高さの比率を、１：６以上にすればよい。なお、柱３２，３２の芯間寸法とは、柱３２が断面正方形状または断面長方形状の角形鋼管で形成されている場合、柱３２，３２の断面中心間の距離のことを言う。 Further, in the present embodiment, the ratio of the center-to-center dimension of the pair of left and right pillars 32, 32 to the wall height of the load-bearing wall 30 is 1:6, and the load-bearing wall 30 is a narrow load-bearing wall. However, the bearing wall 30 may be formed narrower than this. In this case, the ratio of the center-to-center dimension of the pair of left and right pillars 32, 32 to the wall height of the load-bearing wall 30 should be 1:6 or more. The center-to-center dimension of the pillars 32, 32 means the distance between the cross-sectional centers of the pillars 32, 32 when the pillars 32 are made of square steel pipes having a square or rectangular cross section.

このような構成のエネルギー吸収デバイス付き耐力壁３１は、図４に示すように、上下の梁（水平構造材）３５，３５に結合される。つまり、耐力壁３０の左右一対の柱３２，３２の上下端部がそれぞれ上下の梁３５，３５に結合される。
この場合、この上下の梁３５，３５が図２に示す横枠３５を構成する。梁３５，３５はＨ形鋼や角形鋼管等の鋼材によって形成されている。 The load-bearing wall 31 with an energy absorbing device having such a configuration is coupled to upper and lower beams (horizontal structural members) 35, 35, as shown in FIG. That is, the upper and lower ends of the pair of left and right pillars 32, 32 of the load-bearing wall 30 are coupled to the upper and lower beams 35, 35, respectively.
In this case, the upper and lower beams 35, 35 constitute the horizontal frame 35 shown in FIG. The beams 35, 35 are made of steel materials such as H-section steel and square steel pipes.

上下の梁３５，３５に結合されたエネルギー吸収デバイス付き耐力壁３１に、地震等によって水平方向の外力（地震力）が作用すると、耐力壁３０が倒れるように変位する。エネルギー吸収デバイス１０の固定部１５は締結部３３によって拘束されているので、前記変位に伴ってエネルギー吸収デバイス１０の変形部１３が湾曲部１２を左右に変形させるようにして塑性変形し、これによって、外力（地震力）のエネルギーを吸収する。したがって、地震力に対してエネルギー吸収する性能を高めることができ、耐力壁３０の耐震性能を向上させることができる。 When a horizontal external force (seismic force) due to an earthquake or the like acts on the load-bearing wall 31 with an energy absorption device coupled to the upper and lower beams 35, 35, the load-bearing wall 30 is displaced so as to fall down. Since the fixing portion 15 of the energy absorption device 10 is restrained by the fastening portion 33, the deformation portion 13 of the energy absorption device 10 is plastically deformed so as to deform the bending portion 12 left and right along with the displacement. , absorb the energy of the external force (seismic force). Therefore, the performance of absorbing energy against seismic force can be enhanced, and the seismic performance of the load-bearing wall 30 can be improved.

本実施の形態によれば、エネルギー吸収デバイス１０の固定部１５が連結部１４からそれぞれ、当該連結部１４が延びる方向と直交する方向に連続して延び、さらに固定部１５は連結部１４にそれぞれ前記断面方向と直交する方向に対向離間して一対ずつ設けられ、耐力壁３０は、一対の柱３２，３２と、当該一対の柱３２，３２の対向する面３２ａ，３２ａのそれぞれから対となって突出して設けられ締結部３３，３３とを備え、エネルギー吸収デバイス１０が一対の柱３２，３２の間に配置され、１つのエネルギー吸収デバイス１０の４つの固定部１５がそれぞれ４つの締結部３３に固定されることによって、エネルギー吸収デバイス１０の固定部１５，１５が締結部３３，３３を介して一対の柱３２，３２に間接的に固定されるので、耐力壁３０を構成する柱３２，３２の面外局所変形を抑制できる。つまり、締結部３３，３３は、柱３２の面３２ａの中央部に固定されておらず、面３２ａの両側縁部に固定されているので、柱３２，３２の面３２ａ，３２ａの面外局所変形を抑制できる。
したがって、周辺構成部材の板厚を大きくしたり、部品点数を増やしたり、さらには壁重量を大きくすることなく、耐力壁３０としての剛性を確保することが可能となり、合理的にエネルギー吸収デバイス１０のエネルギー吸収性能を発揮できる。 According to the present embodiment, the fixing portions 15 of the energy absorption device 10 extend continuously from the connecting portions 14 in the direction orthogonal to the direction in which the connecting portions 14 extend, and the fixing portions 15 extend to the connecting portions 14 respectively. A pair of load-bearing walls 30 are provided in pairs in a direction orthogonal to the cross-sectional direction, and the load-bearing walls 30 form a pair from the pair of pillars 32 and 32 and the surfaces 32a and 32a of the pair of pillars 32 and 32 facing each other. The energy absorption device 10 is arranged between the pair of pillars 32, 32, and the four fixing portions 15 of one energy absorption device 10 are respectively connected to the four fastening portions 33. , the fixing portions 15, 15 of the energy absorption device 10 are indirectly fixed to the pair of pillars 32, 32 via the fastening portions 33, 33, so that the pillars 32, 32 constituting the load-bearing wall 30, 32 out-of-plane local deformation can be suppressed. That is, the fastening portions 33, 33 are not fixed to the central portion of the surface 32a of the column 32, but are fixed to both side edge portions of the surface 32a. Deformation can be suppressed.
Therefore, it is possible to secure the rigidity of the load-bearing wall 30 without increasing the plate thickness of the peripheral constituent members, increasing the number of parts, or increasing the wall weight. energy absorption performance.

また、左右一対の柱３２，３２の芯間寸法と耐力壁３０の壁高さの比率を、１：６以上とすることによって、耐力壁３０が細幅耐力壁となり、当該細幅耐力壁においても高剛性を発揮し、合理的にエネルギー吸収デバイスのエネルギー吸収性能を発揮できる。
また、締結部３３，３３の左右方向の長さを調整することによって、エネルギー吸収デバイス付き耐力壁３１の壁幅を調整できる。
さらに、締結部３３は長方形板状に形成され、その表面が柱３２の表面と面一となっており、エネルギー吸収デバイス１０は締結部３３，３３の内側に配置されているので、当該柱３２，３２の正面側および／または背面側に面材を取り付けても、締結部３３およびエネルギー吸収デバイス１０が面材の邪魔になることがない。 Further, by setting the ratio of the center-to-center dimension of the pair of left and right pillars 32, 32 to the wall height of the load-bearing wall 30 to 1:6 or more, the load-bearing wall 30 becomes a narrow load-bearing wall. It also exhibits high rigidity, and can reasonably demonstrate the energy absorption performance of the energy absorption device.
Further, by adjusting the lengths of the fastening portions 33, 33 in the left-right direction, the wall width of the load-bearing wall 31 with the energy absorption device can be adjusted.
Furthermore, the fastening portion 33 is formed in a rectangular plate shape, the surface of which is flush with the surface of the pillar 32, and the energy absorption device 10 is arranged inside the fastening portions 33, 33, so that the pillar 32 , 32, the fastening portion 33 and the energy absorbing device 10 do not interfere with the facing material.

図７～図９はそれぞれ第１の実施の形態のエネルギー吸収デバイス付き耐力壁３１の変形例を示す平断面図である。なお、第１の実施の形態と同一構成には同一符号を付してその説明を省略する。
図７は第１変形例を示す。第１の実施の形態では、エネルギー吸収デバイス１０の固定部１５，１５を耐力壁３０の締結部３３，３３の内面に固定しているのに対し、第１の変形例ではエネルギー吸収デバイス１０の固定部１５，１５を耐力壁３０の締結部３３，３３の外面に固定している。
図８は第２変形例を示す。第１の実施の形態では、耐力壁３０において、締結部３３，３３の基端部を柱３２，３２の対向する面３２ａ，３２ａの両側縁部に固定しているのに対し、第２変形例では、締結部３３，３３の基端部を柱３２，３２の外側を向く側面３２ｂ，３２ｂに固定している。この固定は溶接によって行ってもよいし、ボルト止めによって行ってもよい。
図９は第３変形例を示す。この第３変形例では、第１変形例と同様に、エネルギー吸収デバイス１０の固定部１５，１５を耐力壁３０の締結部３３，３３の外面に固定しているとともに、第２変形例と同様に、締結部３３，３３の基端部を柱３２，３２の外側を向く側面３２ｂ，３２ｂに固定している。
このような第１～第３変形例においても、第１の実施の形態と同様の効果を得ることができる。 7 to 9 are plan cross-sectional views showing modifications of the load-bearing wall 31 with the energy absorption device of the first embodiment. In addition, the same code|symbol is attached|subjected to the same structure as 1st Embodiment, and the description is abbreviate|omitted.
FIG. 7 shows a first modification. In the first embodiment, the fixing portions 15, 15 of the energy absorption device 10 are fixed to the inner surfaces of the fastening portions 33, 33 of the bearing wall 30, whereas in the first modification, the energy absorption device 10 is The fixed portions 15 , 15 are fixed to the outer surfaces of the fastening portions 33 , 33 of the bearing wall 30 .
FIG. 8 shows a second modification. In the load-bearing wall 30 of the first embodiment, the base end portions of the fastening portions 33, 33 are fixed to both side edge portions of the facing surfaces 32a, 32a of the columns 32, 32, whereas the second modification In the example, the base ends of the fastening portions 33, 33 are fixed to the side surfaces 32b, 32b of the columns 32, 32 facing outward. This fixation may be performed by welding or by bolting.
FIG. 9 shows a third modification. In this third modification, similarly to the first modification, the fixing portions 15, 15 of the energy absorption device 10 are fixed to the outer surfaces of the fastening portions 33, 33 of the load-bearing wall 30, and similarly to the second modification, In addition, the base ends of the fastening portions 33, 33 are fixed to the side surfaces 32b, 32b of the columns 32, 32 facing outward.
In such first to third modifications, the same effect as in the first embodiment can be obtained.

（第２の実施の形態）
図１０および図１１は第２の実施の形態を示すもので、図１０はエネルギー吸収デバイス１０が設けられた耐力壁３０を示す斜視図、図１１は図１０におけるＡ－Ａ線断面図である。
本実施の形態が第１の実施の形態と異なる点は、第１の実施の形態ではエネルギー吸収デバイス１０を、締結部３３を介して耐力壁３０に間接的に取り付けたのに対し、本実施の形態では、エネルギー吸収デバイス１０を耐力壁３０に直接取り付けた点であるので、以下ではこの点について説明し、第１の実施の形態と同一構成には同一符号を付してその説明を省略することもある。 (Second embodiment)
10 and 11 show the second embodiment, FIG. 10 is a perspective view showing the load-bearing wall 30 provided with the energy absorption device 10, and FIG. 11 is a cross-sectional view along line AA in FIG. .
This embodiment differs from the first embodiment in that the energy absorption device 10 is indirectly attached to the load-bearing wall 30 via the fastening portion 33 in the first embodiment. 2 is that the energy absorbing device 10 is directly attached to the load-bearing wall 30, so this point will be described below, and the same reference numerals will be given to the same configurations as in the first embodiment, and the description thereof will be omitted. sometimes.

図１０および図１１に示すように、本実施の形態では、上述したようなエネルギー吸収デバイス１０を合計で６個、耐力壁３０に取り付けることによって、エネルギー吸収デバイス付き耐力壁３１となる。
耐力壁３０は、第１の実施の形態と同様に、角形鋼管で形成された左右一対の柱３２，３２を備えているが、第１の実施の形態のような締結部３３，３３は備えていない。また、柱３２，３２の離間距離は、第１の実施の形態に比して短くなっている。このため、第１の実施の形態より細幅の細幅耐力壁となっている。なお、エネルギー吸収デバイス１０の個数は必ずしも６個でなくてもよく、上下でバランスが取れるよう偶数個設置すればよい。 As shown in FIGS. 10 and 11, in the present embodiment, a total of six energy absorption devices 10 as described above are attached to a load-bearing wall 30 to form a load-bearing wall 31 with energy absorption devices.
The load-bearing wall 30 includes a pair of left and right columns 32, 32 formed of square steel pipes, as in the first embodiment, but does not include the fastening portions 33, 33 as in the first embodiment. not Also, the distance between the pillars 32, 32 is shorter than in the first embodiment. Therefore, the narrow bearing wall is narrower than that of the first embodiment. It should be noted that the number of energy absorption devices 10 does not necessarily have to be six, and an even number may be installed so as to balance the top and bottom.

また、左右一対の柱３２，３２の対向する面３２ａ，３２ａの間には、エネルギー吸収デバイス１０が合計６個、上下に配置されている。
すなわち、第１の実施の形態と同様に、柱３２，３２の上下方向の中央位置においては、上下一対のエネルギー吸収デバイス１０，１０がそれらのＵ形部材１１，１１の向きを互いに逆方向にして、上下に僅かな隙間をもって配置され、また、柱３２，３２の前記中央位置から上下にそれぞれ所定間隔で隔てた上側位置および下側位置には、上下一対のエネルギー吸収デバイス１０，１０がそれらのＵ形部材１１，１１の向きを互いに逆方向にして、上下に僅かな隙間をもって配置されている。
上下一対のエネルギー吸収デバイス１０，１０のうち上側のエネルギー吸収デバイス１０は、その湾曲部１２を上側に向け配置され、下側のエネルギー吸収デバイス１０は、その湾曲部１２を下側に向けて配置されている。 A total of six energy absorption devices 10 are arranged vertically between the opposing surfaces 32a, 32a of the pair of left and right pillars 32, 32. As shown in FIG.
That is, as in the first embodiment, at the center position of the columns 32, 32 in the vertical direction, the pair of upper and lower energy absorption devices 10, 10 have their U-shaped members 11, 11 directed in opposite directions. A pair of upper and lower energy absorbing devices 10, 10 are arranged at upper and lower positions vertically separated from the central position of the pillars 32, 32 by a predetermined distance, respectively. The U-shaped members 11, 11 are arranged in opposite directions with a slight vertical gap.
The upper energy absorption device 10 of the pair of upper and lower energy absorption devices 10, 10 is arranged with its curved portion 12 directed upward, and the lower energy absorption device 10 is arranged with its curved portion 12 directed downward. It is

また、図１１に示すように、エネルギー吸収デバイス１０の一方の前後一対の固定部１５，１５の先端部は、一方の柱３２の面３２ａの両側縁部に当接されたうえで、溶接によって固定され、他方の前後一対の固定部１５，１５の先端部は、他方の柱３２の面３２ａの両側縁部に当接されたうえで、溶接によって固定されている。また、固定部１５の外側を向く面は柱３２の外側を向く側面３２ｂとほぼ面一となっている。 Further, as shown in FIG. 11 , the tip portions of one pair of front and rear fixing portions 15 , 15 of the energy absorbing device 10 are brought into contact with both side edge portions of the surface 32 a of one of the columns 32 and then welded together. The front end portions of the other pair of front and rear fixing portions 15, 15 are abutted against both side edge portions of the surface 32a of the other column 32 and then fixed by welding. In addition, the outward facing surface of the fixed portion 15 is substantially flush with the outward facing side surface 32 b of the column 32 .

本実施の形態によれば、エネルギー吸収デバイス１０の固定部１５が連結部１４からそれぞれ、当該連結部１４が延びる方向と直交する方向に連続して延び、さらに固定部１５は連結部１４にそれぞれ前記断面方向と直交する方向に対向離間して一対ずつ設けられ、耐力壁３０は、一対の柱３２，３２を備え、エネルギー吸収デバイス１０が一対の前記柱３２，３２の間に配置され、前記エネルギー吸収デバイス１０の一方側の一対の前記固定部１５，１５が一方の柱３２の対向する面３２ａに固定され、他方側の一対の前記固定部１５，１５が他方の柱３２の対向する面３２ａに固定されることによって、エネルギー吸収デバイス１０の固定部１５が一対の柱３２，３２に直接固定されるので、耐力壁３０を構成する柱の面外局所変形を抑制できる。つまり、固定部１５，１５は、柱３２の面３２ａの中央部に固定されておらず、面３２ａの両側縁部に固定されているので、柱３２，３２の面３２ａ，３２ａの面外局所変形を抑制できる。したがって、周辺構成部材の板厚を大きくしたり、部品点数を増やしたり、さらには壁重量を大きくすることなく、耐力壁３０としての剛性を確保することが可能となり、合理的にエネルギー吸収デバイス１０のエネルギー吸収性能を発揮できる。 According to the present embodiment, the fixing portions 15 of the energy absorption device 10 extend continuously from the connecting portions 14 in the direction orthogonal to the direction in which the connecting portions 14 extend, and the fixing portions 15 extend to the connecting portions 14 respectively. The load-bearing walls 30 have a pair of pillars 32, 32, and the energy absorption device 10 is arranged between the pair of pillars 32, 32, and the The pair of fixing portions 15, 15 on one side of the energy absorption device 10 are fixed to the opposing surfaces 32a of one of the columns 32, and the pair of fixing portions 15, 15 on the other side are attached to the opposing surfaces of the other column 32. By being fixed to 32a, the fixed portion 15 of the energy absorbing device 10 is directly fixed to the pair of pillars 32, 32, so that local out-of-plane deformation of the pillars constituting the load-bearing wall 30 can be suppressed. That is, the fixed portions 15, 15 are not fixed to the central portion of the surface 32a of the column 32, but are fixed to both side edge portions of the surface 32a. Deformation can be suppressed. Therefore, it is possible to secure the rigidity of the load-bearing wall 30 without increasing the plate thickness of the peripheral constituent members, increasing the number of parts, or increasing the wall weight. energy absorption performance.

図１２は第２の実施の形態のエネルギー吸収デバイス付き耐力壁３１の変形例を示す平断面図である。なお、第２の実施の形態と同一構成には同一符号を付してその説明を省略する。
第２の実施の形態では、エネルギー吸収デバイス１０の固定部１５，１５の先端部を柱３２，３２の対向する面３２ａ，３２ａの両側縁部に固定しているのに対し、変形例では、固定部１５，１５の左右方向の長さを長くしたうえで、当該固定部１５，１５の先端部を柱３２，３２の外側を向く側面３２ｂ，３２ｂに固定している。この固定は溶接によって行ってもよいし、ボルト止めによって行ってもよい。
このような変形例においても、第２の実施の形態と同様の効果を得ることができる。 FIG. 12 is a cross-sectional plan view showing a modification of the load-bearing wall 31 with the energy absorbing device of the second embodiment. In addition, the same code|symbol is attached|subjected to the same structure as 2nd Embodiment, and the description is abbreviate|omitted.
In the second embodiment, the tip portions of the fixing portions 15, 15 of the energy absorption device 10 are fixed to both side edges of the facing surfaces 32a, 32a of the columns 32, 32, whereas in the modified example, After increasing the length of the fixing parts 15 in the left-right direction, the tips of the fixing parts 15, 15 are fixed to the side surfaces 32b, 32b of the columns 32, 32 facing outward. This fixation may be performed by welding or by bolting.
Even in such a modified example, the same effect as in the second embodiment can be obtained.

次に、本発明に係るエネルギー吸収デバイス１０を設けた耐力壁３０の構造性能について、数値実験（有限要素解析）の結果に基づき説明する。
実際の耐力壁を模擬したＦＥＡ（有限要素解析）を実施し、先行技術に対する優位性（高剛性化）を発揮することを確認した。
ここでは、図１３に示すように、本発明に係る耐力壁は、左右一対の角形鋼管柱３２，３２を有し、幅が４５５ｍｍ、高さが２６４０ｍｍであり、エネルギー吸収デバイス１０を合計６つ設置したモデルを作成した。エネルギー吸収デバイス１０は、固定部１５を締結部３３を介して耐力壁３０に間接的に取り付けた。 Next, the structural performance of the bearing wall 30 provided with the energy absorption device 10 according to the present invention will be described based on the results of numerical experiments (finite element analysis).
FEA (finite element analysis) simulating an actual load-bearing wall was performed, and it was confirmed that the superiority (high rigidity) over the prior art was exhibited.
Here, as shown in FIG. 13, the load-bearing wall according to the present invention has a pair of left and right rectangular steel pipe columns 32, 32 with a width of 455 mm and a height of 2640 mm. I created a model of the installation. The energy absorbing device 10 has the fixed portion 15 indirectly attached to the bearing wall 30 via the fastening portion 33 .

これに対し、図１４に示すように、既往技術（従来の耐力壁）は、左右一対の角形鋼管柱３２，３２を有し、対向する対向面の中央部からエネルギー吸収デバイス４２を締結するフレーム板４０，４０が延びており、柱３２側と逆側の端部にフランジ４１を介してＵ形のエネルギー吸収デバイス４２を締結している。フレーム板４０，４０は柱３２，３２の対向する面の中央部から延びている。 On the other hand, as shown in FIG. 14, the existing technology (conventional load-bearing wall) has a pair of left and right rectangular steel pipe columns 32, 32, and a frame that fastens an energy absorption device 42 from the center of the opposing surfaces. Plates 40 , 40 are extended, and a U-shaped energy absorption device 42 is fastened via a flange 41 to the end opposite to the column 32 side. Frame plates 40,40 extend from the central portions of the opposing faces of posts 32,32.

そして、図１５に示すように、解析モデルに水平力Ｑを付与した。図１６に、解析結果から得られた水平力Ｑ－層間変形量Δ関係を示し、図１７および図１８に、既往技術と本発明におけるＭｉｓｅｓ応力コンタ図を示す。なお、当該コンタ図においては、黒い部分が塑性化した部分である。 Then, as shown in FIG. 15, a horizontal force Q was applied to the analytical model. FIG. 16 shows the horizontal force Q-interlayer deformation amount Δ relationship obtained from the analysis results, and FIGS. 17 and 18 show Mises stress contour diagrams in the conventional technology and the present invention. In addition, in the contour figure, the black portion is the plasticized portion.

図１６に示すように、既往技術の弾性剛性と本発明を比較すると、１．９倍剛性が向上し、本発明が高剛性であることが分かる。
また、図１７に示すように、既往技術の場合は鋼管柱の局所面外変形が顕著に生じ、エネルギー吸収デバイスの変形も小さいのに対し、図１８に示すように、本発明の場合は、鋼管柱の局所面外変形が抑制され、エネルギー吸収デバイスの変形も大きいのが分かる。このように、本発明では、鋼管柱の面外局所変形を抑制し、細幅の耐力壁においても高剛性を実現し、エネルギー吸収デバイスを狙い通り塑性化することが可能である。 As shown in FIG. 16, when comparing the elastic stiffness of the existing technology with the present invention, the stiffness is improved by 1.9 times, indicating that the present invention has high stiffness.
In addition, as shown in FIG. 17, in the case of the existing technology, the local out-of-plane deformation of the steel pipe column occurs significantly, and the deformation of the energy absorption device is small. It can be seen that the local out-of-plane deformation of the steel pipe column is suppressed and the deformation of the energy absorption device is large. Thus, in the present invention, it is possible to suppress out-of-plane local deformation of a steel pipe column, achieve high rigidity even in a narrow bearing wall, and plasticize an energy absorption device as intended.

１０エネルギー吸収デバイス
１１Ｕ形部材
１２湾曲部
１３変形部
１４連結部
１５固定部
３０耐力壁
３１エネルギー吸収デバイス付き耐力壁
３２柱
３３締結部 REFERENCE SIGNS LIST 10 energy absorbing device 11 U-shaped member 12 bending portion 13 deforming portion 14 connecting portion 15 fixed portion 30 bearing wall 31 bearing wall with energy absorbing device 32 column 33 fastening portion

Claims

An energy absorbing device provided in a bearing wall, comprising:
A U-shaped member formed in a substantially U-shape in a cross-sectional direction,
The U-shaped member includes a curved portion, a pair of deformation portions extending continuously from both ends of the curved portion, and a pair of connecting portions extending continuously from the ends of the pair of deformation portions,
A fixing portion extending continuously in a direction perpendicular to the direction in which the connecting portions extend is provided on each of the pair of connecting portions,
a pair of the fixing portions are provided on the connecting portion so as to face each other in a direction perpendicular to the cross-sectional direction and are fixed directly or indirectly to the load-bearing wall ;
An end of the fixing portion and an end of the connecting portion in the cross-sectional direction are at the same position,
The energy absorption device , wherein the length dimension of the fixed portion in the cross-sectional direction is equal to the distance between the top portion of the curved portion and the end portion of the deformable portion .

A load-bearing wall with an energy-absorbing device comprising the energy-absorbing device according to claim 1 and a load-bearing wall,
The load-bearing wall comprises a pair of pillars and a pair of fastening portions protruding from respective opposing surfaces of the pair of pillars,
A load-bearing wall with an energy absorption device, wherein the energy absorption device is arranged between a pair of the pillars, and the four fixing portions of the energy absorption device are respectively fixed to the four fastening portions.

A load-bearing wall with an energy-absorbing device comprising the energy-absorbing device according to claim 1 and a load-bearing wall,
the bearing wall comprising a pair of posts having opposing faces;
the energy absorbing device is positioned between a pair of the pillars;
The pair of fixing portions on one side of the energy absorbing device are fixed to the opposing surfaces of one column, and the pair of fixing portions on the other side are fixed to the opposing surfaces of the other column. A load-bearing wall with an energy-absorbing device.

4. A load-bearing wall with an energy absorption device according to claim 2 or 3 , wherein the ratio of the center-to-center dimension of said pair of pillars and the wall height of said load-bearing wall is 1:6 or more.