JP2018162602A - Joint metal and joint structure of wall - Google Patents

Joint metal and joint structure of wall Download PDF

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JP2018162602A
JP2018162602A JP2017060635A JP2017060635A JP2018162602A JP 2018162602 A JP2018162602 A JP 2018162602A JP 2017060635 A JP2017060635 A JP 2017060635A JP 2017060635 A JP2017060635 A JP 2017060635A JP 2018162602 A JP2018162602 A JP 2018162602A
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JP6852499B2 (en
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清水 信孝
Nobutaka Shimizu
信孝 清水
佐藤 圭一
Keiichi Sato
圭一 佐藤
綾那 伊藤
Ayana Ito
綾那 伊藤
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Nippon Steel Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a joint metal which can exhibit stable energy absorption performance suppressing the slip property and does not require time for finishing the wall.SOLUTION: The metal joint 10 includes a first connecting portion 11 connected to an upper end portion and/or a lower end portion of the wall 1, a deformable portion 12 capable of absorbing energy by plastic deformation, and a second connecting portion 13 connected to an upper structure 2 and/or lower structure 3, in which The deformable portion 12 is constituted by the first twisted plate 12 twisted around the deformation axis, and the first connecting portion 11 is provided at one end portion of the deforming portion 12 and the second connecting portion 13 is provided at the other end portion, and the deformed portion 12 of the metal joint 10 is inserted into each of the holes provided on the upper end surface and/or the lower end surface of the wall 1, the first connecting portion 11 is inserted and connected from the bottom surface of each hole 16 inside the wall 1, and the second connecting portion 13 is connected to the upper structure 2 and/or the lower structure 3, respectively.SELECTED DRAWING: Figure 1

Description

本発明は、接合金物および壁の接合構造に関する。   The present invention relates to a joint metal and a wall joint structure.

柱や梁等で形成される四辺形の構面に対して強度や剛性を高めるために対角上に設置されるブレース材や、隅部を挟んで斜めに設置される隅部補強材等の補強用斜め材の一例として特許文献1に記載のものが知られている。
この補強用斜め材は、柱や梁等で形成される四辺形の構面に対して斜めに設置されるものであって、細長い平板を螺旋状に捩って形成した捩り板から構成されている。
このような補強用斜め材では、捩り板の捩りピッチを変えて剛性を調整することにより、適用場所に適応した補強用斜め材の提供が可能になる。
Brace material installed diagonally to increase the strength and rigidity of quadrilateral construction formed by columns, beams, etc., corner reinforcements installed diagonally across the corner, etc. The thing of patent document 1 is known as an example of the diagonal material for reinforcement.
This reinforcing diagonal member is installed obliquely with respect to a quadrilateral construction surface formed of columns, beams, etc., and is composed of a twisted plate formed by twisting an elongated flat plate into a spiral shape. Yes.
In such a reinforcing diagonal member, it is possible to provide a reinforcing diagonal member adapted to the application place by changing the twist pitch of the twist plate and adjusting the rigidity.

また、土台や梁等の横材に柱を据え付けるために用いる連結金具の一例として特許文献2に記載のものが知られている。
この連結金具は、横材に形成された軸孔に埋め込まれる根元部と、柱の端面から軸線方向に形成されたスリットに差し込まれかつ柱の側面から打ち込まれるドリフトピンを挿通させるためのピン孔を有する差込板とからなり、前記差込板は、前記ピン孔から前記根元部までの範囲で、内部を切り抜いた窓を有している。
このような連結金具を用いた建物が地震に遭遇して、横材と柱を引き離す方向に荷重が作用した際は、窓の角部等に応力が集中して、早い段階で塑性変形が引き起こされ、効率よくエネルギを吸収でき、円滑に制震性を発揮することができる。
Moreover, the thing of patent document 2 is known as an example of the connection metal fitting used in order to install a column in cross members, such as a base and a beam.
This connecting metal fitting has a root portion embedded in a shaft hole formed in a cross member, and a pin hole for inserting a drift pin inserted from a column end surface into a slit formed in the axial direction and driven from a side surface of the column The said insertion board has the window which cut out the inside in the range from the said pin hole to the said root part.
When a building using such a connecting bracket encounters an earthquake and a load is applied in the direction that separates the cross member from the column, stress concentrates on the corners of the window, causing plastic deformation at an early stage. Therefore, energy can be absorbed efficiently, and the vibration control can be exhibited smoothly.

また、各種木造構造において、土台と柱や柱と横架材等、部材同士を連結するためのホゾパイプの一例として特許文献3に記載のものが知られている。
このホゾパイプは、中空の棒状でかつ一方材と他方材との境界を貫くように埋め込まれ、側周面には、一方材から打ち込まれるドリフトピンやボルト等を挿通するための第一ピン孔と、他方材から打ち込まれるドリフトピンやボルト等を挿通するための第二ピン孔と、を備え、前記第一ピン孔と前記第二ピン孔との間には、全周を半径方向に湾曲させた拡張部を設けている。
このようなホゾパイプでは、引張荷重が作用した際、拡張部の周辺で応力が局地的に増大して、弾塑性変形を引き起こしやすくなる。そのため地震等で二部材を引き離す方向に過大な荷重が作用した際、衝撃が緩和され、建物等に及ぶ被害を軽減できる。
Moreover, in various wooden structures, the thing of patent document 3 is known as an example of the hozo pipe for connecting members, such as a foundation, a pillar, a pillar, and a horizontal member.
This hozo pipe is a hollow rod-shaped and embedded so as to penetrate the boundary between one material and the other material, and a side surface has a first pin hole for inserting a drift pin, a bolt or the like driven from one material. A second pin hole for inserting a drift pin, bolt or the like driven from the other material, and the entire circumference is curved in a radial direction between the first pin hole and the second pin hole. An extended part is provided.
In such a hozo pipe, when a tensile load is applied, the stress locally increases around the extended portion, which easily causes elasto-plastic deformation. Therefore, when an excessive load is applied in the direction of separating the two members due to an earthquake or the like, the impact is alleviated and damage to buildings and the like can be reduced.

特開2010−47948号公報JP 2010-47948 A 特許第5451549号公報Japanese Patent No. 5451549 特許第5451561号公報Japanese Patent No. 5451561

ところで、直交集成板や集成材等からなる木材パネルによる壁等の内部が中実な壁では、壁自体にほとんど変形性能を期待できず、壁を床や基礎等の下構造物や床や梁等の上構造物に接合(締結)する接合金物によって変形性能を確保する必要がある。直交集成板(CLT:Cross Laminated Timber)の木材パネルを用いた従来の壁の接合構造では、コの字に折り曲げた接合金物を壁と上下の構造物とに接合する、つまり、接合金物の対向する一対の片部で壁の上部および下部をそれぞれ挟み込んだうえで、当該片部から壁に釘を打ち込んで釘接合するとともに、接合金物の一対の片部を連結する連結片部を上下の構造物にそれぞれ当接したうえ、連結片部を当該構造物にボルトによって接合するものが一般的である。   By the way, in the case of a solid wall such as a wall made of timber panels made of orthogonal laminated boards or laminated timber, the wall itself can hardly be expected to be deformed, and the wall can be used for lower structures such as floors and foundations, floors and beams, etc. Deformation performance needs to be ensured by a metal fitting to be joined (fastened) to the upper structure. In a conventional wall-joining structure using a cross laminated plate (CLT) wood panel, the joint hardware folded in a U-shape is joined to the wall and the upper and lower structures, that is, the opposite of the joint hardware. The upper and lower parts of the wall are sandwiched between a pair of pieces, and a nail is driven into the wall from the piece to join the nail, and the connecting piece connecting the pair of pieces of the joint hardware is vertically structured. In general, the connecting piece is joined to the structure with a bolt after contacting each object.

壁に水平方向に地震力が作用すると、壁の剛体回転(ロッキング)が生じようとして接合金物に力が作用するため、壁に繰返し地震力が作用すると、接合金物と壁とをつなぐ釘接合部の破壊に起因して、壁の接合構造全体としてスリップ性状を示し、十分なエネルギ吸収性能を確保できないという課題がある。
また、壁の表裏面から接合金物の一対の片部やこの片部から打ち込んだ釘の釘頭が突出するため、壁の仕上げ手間が大きくなる課題もある。
一方、上述した特許文献1に記載の補強用斜め材は、壁と上下の構造物を接合するものではなく、特許文献2および3に記載の連結金具およびホゾパイプは壁に設けるものではなく、柱に設けるものであるので、耐荷性能が不足する課題があるために壁の接合構造には直接適用することはできない。
When a seismic force is applied to the wall in the horizontal direction, a force acts on the joint hardware in an attempt to cause a rigid rotation (rocking) of the wall. Therefore, when a seismic force is applied to the wall repeatedly, a nail joint that connects the joint hardware and the wall. Due to the destruction of the wall, there is a problem that the entire wall joining structure exhibits slip properties and cannot secure sufficient energy absorption performance.
In addition, since the pair of pieces of the joint hardware and the nail heads of nails driven from these pieces protrude from the front and back surfaces of the wall, there is a problem that the labor for finishing the wall becomes large.
On the other hand, the diagonal member for reinforcement described in Patent Document 1 described above does not join the wall and the upper and lower structures, and the connecting metal fittings and hozo pipes described in Patent Documents 2 and 3 are not provided on the wall. Therefore, it cannot be applied directly to the wall joint structure because there is a problem of insufficient load resistance.

本発明は、前記事情に鑑みてなされたものであり、繰返し地震力に対してスリップ性状を抑制した安定したエネルギ吸収性能を発揮でるとともに、壁の仕上げ手間がかからない接合金物およびこの接合金物を使用した壁の接合構造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 exhibits a stable energy absorption performance that suppresses slip properties against repeated seismic forces, and uses a metal fitting that does not require time and effort to finish a wall. An object of the present invention is to provide a wall joining structure.

前記目的を達成するために、本発明の接合金物は、壁の上方に位置する上構造物および/または前記壁の下方に位置する下構造物に前記壁を接合する接合金物であって、
前記壁の上端部および/または下端部に接続される第1接続部と、塑性変形によりエネルギを吸収可能な変形部と、前記上構造物および/または下構造物に接続される第2接続部とを備え、
前記変形部が変形軸線に沿って当該変形軸線まわりに捩れた第1捩り板によって構成され、
前記変形部の前記変形軸線に沿う一端部に前記第1接続部が設けられ、他端部に前記第2接続部が設けられていることを特徴とする。
In order to achieve the above object, a metal fitting according to the present invention is a metal fitting for bonding the wall to an upper structure located above a wall and / or a lower structure located below the wall,
A first connection portion connected to the upper end portion and / or the lower end portion of the wall; a deformation portion capable of absorbing energy by plastic deformation; and a second connection portion connected to the upper structure and / or the lower structure. And
The deformable portion is constituted by a first torsion plate twisted around the deformation axis along the deformation axis;
The first connecting portion is provided at one end portion along the deformation axis of the deforming portion, and the second connecting portion is provided at the other end portion.

また、本発明の壁の接合構造は、壁の上方に位置する上構造物および/または前記壁の下方に位置する下構造物に、壁を前記接合金物によって接合した壁の接合構造であって、
前記壁の上端面および/または前記壁の下端面の両端部に上下方向に延在する孔が設けられ、
前記各孔に前記接合金物の前記変形部が挿入され、前記壁の内部に前記第1接続部が前記各孔の底面から挿入されて接続され、前記上構造物および/または前記下構造物に前記第2接続部が接続されていることを特徴とする。
The wall joining structure of the present invention is a wall joining structure in which a wall is joined to the upper structure located above the wall and / or the lower structure located below the wall by the joining hardware. ,
Holes extending in the vertical direction are provided at both ends of the upper end surface of the wall and / or the lower end surface of the wall,
The deformed portion of the bonding hardware is inserted into each hole, and the first connection portion is inserted and connected to the inside of the wall from the bottom surface of each hole, and is connected to the upper structure and / or the lower structure. The second connection portion is connected.

ここで、壁としては、例えば直交集成板や集成材等の木材パネルからなり、内部が中実な壁が挙げられるが、壁はこれに限ることはない。例えば、鉄筋コンクリート製の壁パネルであってもよいし、矩形枠状の枠体の表裏両面に合板等の補強板を固定した木質の壁パネルであってもよい。枠体に補強板を固定した木質の壁パネルの場合、孔は枠体のたて枠材に設け、第1接続部はこの孔の底面からたて枠材に接続すればよい。また、壁は、耐力壁や制震壁として適用されるもので、支持壁の機能を併用させてもよい。   Here, as the wall, for example, a wall made of a wood panel such as an orthogonal laminated board or a laminated board and having a solid inside is mentioned, but the wall is not limited to this. For example, it may be a reinforced concrete wall panel or a wooden wall panel in which reinforcing plates such as plywood are fixed on both front and back sides of a rectangular frame. In the case of a wooden wall panel in which a reinforcing plate is fixed to the frame body, the hole may be provided in the vertical frame material of the frame body, and the first connection portion may be connected to the vertical frame material from the bottom surface of the hole. The wall is applied as a load-bearing wall or a damping wall, and the function of the support wall may be used in combination.

本発明において、壁の剛体回転(ロッキング)による浮上りが生じると、つまり、ロッキングにより壁の四隅部のうち、上端部側の一方の隅部と、下端部側の他方の隅部とに浮き上がり(壁の上端部側の一方の隅部は上構造物に対して下方に離間するが、これも浮き上がりとする)が生じると、接合金物の第2接続部は上構造物および下構造物に接続され第1接続部は壁に接続されているので、前記両隅部側に設けられている接合金物の変形部である第1捩り板が引っ張られて変形軸線の方向に伸長して塑性変形し、剛性と耐力を確保しつつ、安定したエネルギ吸収性能を発揮できる。一方、浮き上がりが生じていない壁の上端部側の他方の隅部と、下端部側の一方の隅部はそれぞれ上構造物と下構造物とに当接して支圧抵抗を受けることで、当該両隅部に設けられている接合金物には圧縮力がほとんど作用しない。このため、壁の剛体回転が繰り返し行われても、接合金物の変形部12は、変形前の状態と伸びた状態との間で変形を繰り返すことになり、接合金物の変形部の拡幅(変形軸線と交差する方向への膨らみ)を防いで、当該変形部の前記孔の内周面への干渉を回避しながら変形部の座屈を防ぐことができる。このような機構により、本発明の接合金物を用いた接合構造を適用した壁は、スリップ性状を抑えた安定した履歴特性によるエネルギ吸収性能を確保することができる。   In the present invention, when the wall rises due to the rigid rotation (rocking), that is, the wall rises to one corner on the upper end side and the other corner on the lower end side among the four corners of the wall due to locking. When one of the corners on the upper end side of the wall is spaced downward with respect to the upper structure, this also lifts up), so that the second connection portion of the joint hardware is connected to the upper structure and the lower structure. Since the connected first connecting portion is connected to the wall, the first torsion plate, which is a deformed portion of the joint metal provided at the both corners, is pulled and stretched in the direction of the deformation axis to be plastically deformed. In addition, stable energy absorption performance can be exhibited while ensuring rigidity and proof stress. On the other hand, the other corner on the upper end side of the wall where no lifting occurs and the one corner on the lower end side abut against the upper structure and the lower structure, respectively, and receive a bearing resistance. A compressive force hardly acts on the metal joints provided at both corners. For this reason, even if the rigid body rotation of the wall is repeatedly performed, the deformed portion 12 of the metal joint is repeatedly deformed between the state before the deformation and the extended state, and the widening (deformation) of the deformed portion of the metal joint is performed. Bulging in a direction intersecting the axis) can be prevented, and buckling of the deformable portion can be prevented while avoiding interference of the deformable portion with the inner peripheral surface of the hole. By such a mechanism, the wall to which the joint structure using the joint metal of the present invention is applied can ensure the energy absorption performance by the stable hysteresis characteristic with the slip property suppressed.

また、壁の上端面および/または下端面の両端部に上下方向に延在して設けられた各孔に接合金物の変形部が挿入され、壁の内部に第1接続部が前記各孔の底面から挿入されて接続されているので、接合金物の変形部および第1接続部は壁の壁面から突出することがなく、壁の内部に内蔵されることになるので、壁の仕上げ手間を低減することができる。   In addition, a deformed portion of the joint metal fitting is inserted into each of the holes provided to extend in the vertical direction at both ends of the upper end surface and / or the lower end surface of the wall, and the first connection portion is provided in each of the holes inside the wall. Since it is inserted from the bottom and connected, the deformed part and the first connecting part of the joint hardware do not protrude from the wall surface of the wall and are built in the wall, reducing the wall finishing effort. can do.

本発明の前記構成において、前記第1接続部がねじ状部材によって構成されていてもよい。この場合、壁の上端面および壁の下端面の両端部に設けられた各孔の底面に下穴を設けておくのが好ましい。また、ねじ状部材は、ラグスクリューが好適に使用されるが、これに限ることはなく、木ねじ等であってもよい。   The said structure of this invention WHEREIN: The said 1st connection part may be comprised by the screw-shaped member. In this case, it is preferable to provide a pilot hole on the bottom surface of each hole provided at both ends of the upper end surface of the wall and the lower end surface of the wall. Moreover, although a lag screw is used suitably as a screw-shaped member, it is not restricted to this, A wood screw etc. may be sufficient.

このような構成によれば、第1接続部であるねじ状部材を各孔の底面から壁の内部にねじ込むことによって、接合金物を壁に容易かつ確実に固定できる。   According to such a configuration, the metal fitting can be easily and reliably fixed to the wall by screwing the screw-like member as the first connection portion into the wall from the bottom surface of each hole.

また、本発明の前記構成において、前記第1接続部が、前記第1捩り板の前記変形軸線と同軸の変形軸線に沿って当該変形軸線まわりに捩れた第2捩り板によって構成されていてもよい。   In the configuration of the present invention, the first connecting portion may be constituted by a second twisted plate that is twisted around the deformation axis along a deformation axis that is coaxial with the deformation axis of the first torsion plate. Good.

このような構成によれば、第1接続部が第1捩り板の変形軸線と同軸の変形軸線まわりに捩れた第2捩り板によって構成されているので、第2捩り板を第1捩り板と連続して形成することができる。したがって、接合金物の製作が容易となるとともに性能が安定し、さらに、第1接続部の剛性および耐力を容易に確保できる。   According to such a configuration, since the first connecting portion is constituted by the second torsion plate twisted around the deformation axis coaxial with the deformation axis of the first torsion plate, the second torsion plate is replaced with the first torsion plate. It can be formed continuously. Therefore, it becomes easy to manufacture the joint hardware, and the performance is stabilized, and further, the rigidity and the proof stress of the first connection portion can be easily secured.

また、本発明の前記構成において、前記第2捩り板の単位長さ当りの捩り角度と、前記第1捩り板の単位長さ当りの捩り角度とが異なっていてもよい。   In the configuration of the present invention, a twist angle per unit length of the second twist plate may be different from a twist angle per unit length of the first twist plate.

ここで、捩り板の捩り角度とは、捩り板をその変形軸線まわりに捩った場合の角度のことであり、例えば、捩る前の平板をその変形軸線まわりに1回捩ったときの捩り角度は360°となる。   Here, the twist angle of the torsion plate is an angle when the torsion plate is twisted around its deformation axis. For example, the twist when the flat plate before twisting is twisted once around the deformation axis. The angle is 360 °.

このような構成によれば、第1捩り板と第2捩り板との単位長さ当たりの捩り角度が異なるので、これら捩り角度を適宜調整することによって、第1捩り板に要するエネルギ吸収能、剛性および耐力を調整できるとともに、第2捩り板(第1接続部)に要する剛性、耐力および壁への接続抵抗を調整できる。   According to such a configuration, since the torsion angles per unit length of the first torsion plate and the second torsion plate are different, by appropriately adjusting these torsion angles, the energy absorption capacity required for the first torsion plate, The rigidity and proof stress can be adjusted, and the rigidity, proof strength and connection resistance to the wall required for the second torsion plate (first connecting portion) can be adjusted.

また、本発明の前記構成において、前記変形部が、前記変形軸線まわりに一方側へ捩れている第1変形部と、この第1変形部と前記変形軸線の軸方向に繋がれ、前記変形軸線まわりに他方側へ捩れている第2変形部とを備えていてもよい。   In the configuration of the present invention, the deformation portion is connected to the first deformation portion twisted to one side around the deformation axis, and is connected in the axial direction of the first deformation portion and the deformation axis. You may provide the 2nd deformation | transformation part twisted to the other side around.

このような構成によれば、第1変形部が捩れている方向と第2変形部が捩れている方向とが反対方向とされている。このため、第1変形部と第2変形部との間の部位が変形軸線のまわりに回転しながら、第1変形部及び第2変形部が変形される。これにより、エネルギ吸収荷重(第1接続部と第2接続部との相対位置の変化を妨げる方向に作用する荷重)を安定させることができる。   According to such a configuration, the direction in which the first deformable portion is twisted is opposite to the direction in which the second deformable portion is twisted. For this reason, the first deforming portion and the second deforming portion are deformed while the portion between the first deforming portion and the second deforming portion rotates around the deformation axis. Thereby, the energy absorption load (the load acting in the direction that prevents the change in the relative position between the first connection portion and the second connection portion) can be stabilized.

本発明によれば、繰返し地震力に対してスリップ性状を抑えた安定した履歴特性によるエネルギ吸収性能を発揮できるとともに、壁の仕上げ手間を低減することができる。   ADVANTAGE OF THE INVENTION According to this invention, while being able to exhibit the energy absorption performance by the stable hysteresis characteristic which suppressed slip property with respect to repeated seismic force, the finishing effort of a wall can be reduced.

本発明の第1の実施の形態に係る壁の接合構造を透視して示すもので、正面図である。FIG. 3 is a front view of the wall joint structure according to the first embodiment of the present invention, seen through. 同、側面図である。FIG. 同、接合金物を壁に設置する方法、壁を構造物に接合する方法を説明するための工程図であり、壁を下構造物に接合する前の状態を示す正面である。It is process drawing for demonstrating the method to install a metal joint to a wall and the method to join a wall to a structure, and is the front which shows the state before joining a wall to a lower structure. 同、壁を下構造物に接合した状態を示す正面図である。It is a front view which shows the state which joined the wall to the lower structure same as the above. 同、壁に上構造物を接合した状態を示す正面図である。It is a front view which shows the state which joined the upper structure to the wall. 同、壁に剛体回転による浮上り(ロッキング)が生じた状態を示す正面図である。It is a front view which shows the state which the floating (rocking) by rigid body rotation produced in the same wall. 本発明の第2の実施の形態に係る壁の接合構造を透視して示す正面図である。It is a front view which sees through and shows the joining structure of the wall which concerns on the 2nd Embodiment of this invention. 本発明の第3の実施の形態に係る壁の接合構造を示す透視して正面図である。It is a transparent front view which shows the joining structure of the wall which concerns on the 3rd Embodiment of this invention. 本発明の第3の実施の形態における接合金物の変形例を示すもので、(a)は第1変形例の正面図、(b)は第2変形例の正面図である。The modification of the metal joint in the 3rd Embodiment of this invention is shown, (a) is a front view of a 1st modification, (b) is a front view of a 2nd modification. 本発明に係る接合金物の変形部の変形性状を解析する解析モデルを示すもので、(a)は捩り角度θが360°の場合、(b)は捩り角度θが540°の場合を示す正面図である。2A and 2B show analysis models for analyzing the deformation characteristics of the deformed portion of the joint metal fitting according to the present invention, in which FIG. 1A shows a case where the twist angle θ is 360 °, and FIG. 2B shows a case where the twist angle θ is 540 °. FIG. 本発明に係る接合金物の変形部の変形性状を解析した結果を示すグラフである。It is a graph which shows the result of having analyzed the deformation property of the deformation part of the joint metal object concerning the present invention. 本発明の第4の実施の形態に係る壁の接合構造を透視して示すもので、正面図である。FIG. 10 is a front view showing a wall joining structure according to a fourth embodiment of the present invention in perspective. 同、側面図である。FIG.

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の実施の形態に係る壁の接合構造を透視して示す正面図、図2は同側面図である。なお、図1および図2では、壁1の内部に設ける接合金物10を実線で示している。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a front view showing a wall joining structure according to the first embodiment as seen through, and FIG. 2 is a side view thereof. In FIGS. 1 and 2, the metal joint 10 provided inside the wall 1 is indicated by a solid line.

図1および図2に示すように、壁1は直交集成板や集成材等の木材パネルからなり、内部が中実な壁となっている。この壁1の上方には上構造物2が設けられ、下方には下構造物3が設けられている。上構造物2は例えば床や梁であり、下構造物3は例えば基礎、床または梁である。
壁1の四隅部、つまり壁1の上端面の両端部および壁1の下端面の両端部にはそれぞれ接合金物10が設けられている。
接合金物10は、壁1を上構造物2と下構造物3とにそれぞれ接合するためのもので、第1接続部11と、変形部12と、第2接続部13とを備えている。
As shown in FIGS. 1 and 2, the wall 1 is made of a wood panel such as an orthogonal laminated board or laminated wood, and the inside is a solid wall. An upper structure 2 is provided above the wall 1 and a lower structure 3 is provided below the wall 1. The upper structure 2 is, for example, a floor or a beam, and the lower structure 3 is, for example, a foundation, a floor, or a beam.
Bonding hardware 10 is provided at each of the four corners of the wall 1, that is, at both ends of the upper end surface of the wall 1 and both ends of the lower end surface of the wall 1.
The metal joint 10 is for joining the wall 1 to the upper structure 2 and the lower structure 3, and includes a first connection portion 11, a deformation portion 12, and a second connection portion 13.

第1接続部11はねじ状部材によって構成されている。具体的には第1接続部11はラグスクリューによって構成されている。
変形部12は、変形軸線L1に沿って当該変形軸線L1まわりに螺旋状に捩れた第1捩り板12によって構成されている。この第1捩り板12は、その長手方向(変形軸線L1の方向)に作用する荷重に対して少なくともその一部が塑性変形することで、エネルギを吸収することが可能とされている。この第1捩り板12は、板状に形成された鋼板材に捩り加工等が施されることにより捩られることで形成されている。
The 1st connection part 11 is comprised by the screw-shaped member. Specifically, the 1st connection part 11 is comprised by the lag screw.
The deformation portion 12 is configured by a first twist plate 12 that is spirally twisted around the deformation axis L1 along the deformation axis L1. The first torsion plate 12 is capable of absorbing energy by plastic deformation at least partially with respect to a load acting in the longitudinal direction (direction of the deformation axis L1). The first torsion plate 12 is formed by being twisted by applying torsion processing or the like to a plate-shaped steel plate material.

第2接続部13は、立方体箱状または直方体箱状に形成されており、正面側にレンチ等の工具を挿入可能は開口部が形成され、この開口部を挟んで上下に対向している一方の壁部にはアンカーボルトを用いたアンカー14を挿通するための貫通孔が形成されている。この貫通孔にはアンカー14の一端部が挿通され、当該一端部に第2接続部13の内部でナット14aが螺合されるようになっている。   The second connection portion 13 is formed in a cubic box shape or a rectangular parallelepiped box shape, and an opening is formed on the front side so that a tool such as a wrench can be inserted. A through hole for inserting an anchor 14 using an anchor bolt is formed in the wall portion. One end portion of the anchor 14 is inserted into the through hole, and a nut 14a is screwed into the one end portion inside the second connection portion 13.

そして、変形部(第1捩り板)12の変形軸線L1に沿う一端部に第1接続部11が変形軸線L1と同軸に溶接等によって固定されている。また、変形部(第1捩り板)12の変形軸線L1に沿う他端部に第2接続部13が溶接等によって固定されている。   And the 1st connection part 11 is being fixed to the one end part along the deformation | transformation axis L1 of the deformation | transformation part (1st twist board) 12 by welding etc. coaxially with the deformation | transformation axis L1. In addition, the second connecting portion 13 is fixed to the other end portion along the deformation axis L1 of the deformable portion (first torsion plate) 12 by welding or the like.

このような接合金物10を使用した壁1の接合構造は以下のように構成されている。
すなわち、壁1の上端面の両端部および壁1の下端面の両端部には、正面視矩形の切欠部15が設けられている。つまり、壁1の四隅部にそれぞれ切欠部15が合計4個設けられている。この切欠部15は壁1の表裏面側と側端面側に開口しており、当該切欠部15の左右の幅W1は第2接続部13の左右の幅W2以上となっている。また、切欠部15の深さH1は第2接続部13の上下の高さH2以上となっている。さらに、切欠部15の壁1の厚さ方向における幅T1は第2接続部13の壁1の厚さ方向における幅T2以上となっている。
The joining structure of the wall 1 using such a joining metal fitting 10 is configured as follows.
That is, notches 15 having a rectangular shape in front view are provided at both ends of the upper end surface of the wall 1 and both ends of the lower end surface of the wall 1. That is, a total of four notches 15 are provided at the four corners of the wall 1. The notch 15 opens to the front and back sides and side end surfaces of the wall 1, and the left and right width W 1 of the notch 15 is equal to or greater than the left and right width W 2 of the second connection portion 13. Further, the depth H1 of the notch 15 is equal to or greater than the height H2 above and below the second connection portion 13. Furthermore, the width T <b> 1 in the thickness direction of the wall 1 of the notch 15 is equal to or greater than the width T <b> 2 in the thickness direction of the wall 1 of the second connection portion 13.

切欠部15によって形成される壁1の上端部および下端部の面を切欠部15の底面Cと呼ぶ。切欠部15の底面Cには、壁1の上下方向に延在する孔16が設けられている。この孔16は断面円形状に形成され、その内径は接合金物10の変形部(第1捩り板)12の最大直径より僅かに大きくなっており、孔16の深さH3(壁1の上下方向の長さ)は変形部(第1捩り板)12の変形軸線方向の長さとほぼ等しくなっている。
孔16は、変形部(第1捩り板)12の座屈拘束部となるものであり、当該孔16に変形部(第1捩り板)12がその外周縁を孔16の内周面に対向させ、かつ当該内周面と所定の隙間をもって、挿入されることによって、圧縮軸力に対する変形部(第1捩り板)12の座屈を防ぐようになっている。
また、孔16の底面Uには第1接続部(ラグスクリュー)11をねじ込むための下穴Pが孔16と同軸に設けられている。
The surfaces of the upper end portion and the lower end portion of the wall 1 formed by the notch portion 15 are referred to as a bottom surface C of the notch portion 15. A hole 16 extending in the vertical direction of the wall 1 is provided on the bottom surface C of the notch 15. The hole 16 is formed in a circular shape in cross section, and the inner diameter thereof is slightly larger than the maximum diameter of the deformed portion (first torsion plate) 12 of the metal joint 10, and the depth H3 of the hole 16 (the vertical direction of the wall 1). Is substantially equal to the length of the deformation portion (first torsion plate) 12 in the deformation axis direction.
The hole 16 serves as a buckling restricting portion of the deformable portion (first torsion plate) 12, and the deformable portion (first torsion plate) 12 faces the outer peripheral edge of the hole 16 to the inner peripheral surface of the hole 16. In addition, by being inserted with a predetermined gap from the inner peripheral surface, buckling of the deformable portion (first torsion plate) 12 against the compression axial force is prevented.
In addition, a pilot hole P for screwing the first connection portion (lag screw) 11 is provided on the bottom surface U of the hole 16 coaxially with the hole 16.

そして、各孔16にそれぞれ接合金物10の変形部(第1捩り板)12が挿入され、孔16の底面Uに設けられた下穴Pに第1接続部(ラグスクリュー)11がねじ込まれている。また、接合金物10の第2接続部13は切欠部15に配置されており、壁1の上端面の両端部側に設けられている第2接続部13は上構造物2に当接され、壁1の下端面の両端部側に設けられている第2接続部13は下構造物3に当接されている。
また、壁1の上端面の両端部側に設けられている第2接続部13はアンカー14によって上構造物2に固定され、壁1の下端面の両端部側に設けられている第2接続部13はアンカー14によって下構造物3に固定されている。
さらに、壁1の上端面と上構造物2の下面とには複数のシアキー18が差し込まれ、壁1の下端面と下構造物3の上面とには複数のシアキー18が差し込まれている。シアキー18は壁1の幅方向に所定間隔で複数配置され、壁1と上下の構造物2,3との間でせん断力を伝達するようになっている。
And the deformation | transformation part (1st torsion board) 12 of the joining metal fitting 10 is each inserted in each hole 16, and the 1st connection part (lag screw) 11 is screwed in the pilot hole P provided in the bottom face U of the hole 16. Yes. Further, the second connection portion 13 of the metal joint 10 is disposed in the notch portion 15, and the second connection portions 13 provided on both end sides of the upper end surface of the wall 1 are in contact with the upper structure 2, The second connecting portions 13 provided on both end sides of the lower end surface of the wall 1 are in contact with the lower structure 3.
The second connection portions 13 provided on both end sides of the upper end surface of the wall 1 are fixed to the upper structure 2 by anchors 14, and the second connections provided on both end portions of the lower end surface of the wall 1. The portion 13 is fixed to the lower structure 3 by an anchor 14.
Further, a plurality of shear keys 18 are inserted into the upper end surface of the wall 1 and the lower surface of the upper structure 2, and a plurality of shear keys 18 are inserted into the lower end surface of the wall 1 and the upper surface of the lower structure 3. A plurality of shear keys 18 are arranged at predetermined intervals in the width direction of the wall 1, and a shearing force is transmitted between the wall 1 and the upper and lower structures 2 and 3.

次に、壁1を上構造物2および下構造物3に接合する方法について説明する。
まず、図3に示すように、壁1の四隅部にそれぞれ接合金物10を設ける。この場合、壁1の四隅部にそれぞれ設けられた切欠部15から孔16に第1接続部11および変形部(第1捩り板)12を挿入し、さらに第1接続部11を孔16の底面Uに設けられている下穴Pにねじ込むことで、接合金物10を壁1に固定する。この状態において、変形部(第1捩り板)12は孔16にその内周面との間に所定の隙間をもって挿入され、第2接続部13は切欠部15に設けられるとともに、壁1の上端面の両端部側の第2接続部13の上面は壁1の上端面と面一になり、壁1の下端面の両端部側の第2接続部13の下面は壁1の下端面と面一になっている。
また、壁1の上端面および下端面にそれぞれ複数のシアキー18の一端部を差し込んでおくとともに、下構造物3にアンカー14を、その上端部を下構造物3の上面から突出させた状態で挿入固定しておく。
Next, a method for joining the wall 1 to the upper structure 2 and the lower structure 3 will be described.
First, as shown in FIG. 3, the joint hardware 10 is provided at each of the four corners of the wall 1. In this case, the first connecting portion 11 and the deforming portion (first twisted plate) 12 are inserted into the hole 16 from the notches 15 provided at the four corners of the wall 1, and the first connecting portion 11 is further connected to the bottom surface of the hole 16. The joining hardware 10 is fixed to the wall 1 by screwing into the prepared hole P provided in U. In this state, the deformable portion (first twisted plate) 12 is inserted into the hole 16 with a predetermined gap between the inner peripheral surface, the second connecting portion 13 is provided in the notch portion 15, and The upper surface of the second connection portion 13 on both ends of the end surface is flush with the upper end surface of the wall 1, and the lower surface of the second connection portion 13 on both ends of the lower end surface of the wall 1 is the surface of the lower end surface of the wall 1. It is one.
In addition, one end of each of the plurality of shear keys 18 is inserted into the upper end surface and the lower end surface of the wall 1, and the anchor 14 is protruded from the lower structure 3, with the upper end protruding from the upper surface of the lower structure 3. Insert and fix.

次に、図4に示すように、壁1をクレーンによって吊り下げて、下構造物3の上面に設置する。この場合、下構造物13の上面から突出しているアンカー14の上端部が第2接続部13の内部に挿入されるとともに、シアキー18の他端部(下端部)が下構造物3の上面に形成されている溝部Sに挿入されるようにして、壁1を下構造物3の上面に設置する。次に、第2接続部13の開口部からナット14aを第2接続部13の内部に挿入しアンカー14の上端部に螺合してレンチ等の工具によって当該ナット14aを締め付けることによって、第2接続部13を下構造物3に接続する。これによって、壁1を下構造物3に接合固定する。   Next, as shown in FIG. 4, the wall 1 is suspended by a crane and installed on the upper surface of the lower structure 3. In this case, the upper end portion of the anchor 14 protruding from the upper surface of the lower structure 13 is inserted into the second connection portion 13, and the other end portion (lower end portion) of the shear key 18 is placed on the upper surface of the lower structure 3. The wall 1 is installed on the upper surface of the lower structure 3 so as to be inserted into the formed groove S. Next, the nut 14a is inserted into the second connection portion 13 through the opening of the second connection portion 13, screwed into the upper end portion of the anchor 14, and the nut 14a is tightened with a tool such as a wrench, thereby The connecting portion 13 is connected to the lower structure 3. Thus, the wall 1 is bonded and fixed to the lower structure 3.

次に、図5に示すように、上構造物2をクレーンによって吊り下げて、壁1の上端面に設置する。この場合、シアキー18の他端部(上端部)が上構造物2の下面に形成されている溝部Sに挿入されるようにして、上構造物2を壁1の上端面に設置する。次に、上構造物2の上面からアンカー14を当該上構造物2に設けられている貫通孔に挿通し、当該アンカー14の下端部を第2接続部13の内部に挿入したうえで、第2接続部13の開口部からナット14aを第2接続部13の内部に挿入しアンカー14の下端部に螺合してレンチ等の工具によって当該ナット14aを締め付けることによって、上構造物2を壁1の上端面に接合固定する。これによって、壁1を上構造物2に接合固定する。
なお、上構造物2の上方に上階を設けない場合、上構造物2の上面から突出しているアンカー14の上端部にナット14aを座金14bを挟んで螺合して締め付ける。一方、上構造物2の上方に上階を設ける場合、図1に示すように、上構造物2に上階の壁1を設置し、アンカー4に固定する。この場合、上構造物2を下構造物として、上述した場合と同様にして、上階の壁1を当該下構造物に接合固定する。
Next, as shown in FIG. 5, the upper structure 2 is suspended by a crane and installed on the upper end surface of the wall 1. In this case, the upper structure 2 is installed on the upper end surface of the wall 1 so that the other end portion (upper end portion) of the shear key 18 is inserted into the groove S formed on the lower surface of the upper structure 2. Next, the anchor 14 is inserted into the through-hole provided in the upper structure 2 from the upper surface of the upper structure 2 and the lower end portion of the anchor 14 is inserted into the second connection portion 13. 2 The nut 14a is inserted into the second connection portion 13 from the opening of the connection portion 13, screwed into the lower end portion of the anchor 14, and the nut 14a is tightened with a tool such as a wrench to thereby fix the upper structure 2 to the wall. Bonded and fixed to the upper end surface of 1. As a result, the wall 1 is bonded and fixed to the upper structure 2.
When no upper floor is provided above the upper structure 2, the nut 14 a is screwed onto the upper end portion of the anchor 14 protruding from the upper surface of the upper structure 2 with a washer 14 b interposed therebetween and tightened. On the other hand, when an upper floor is provided above the upper structure 2, the upper floor wall 1 is installed on the upper structure 2 and fixed to the anchor 4 as shown in FIG. 1. In this case, the upper structure 2 is used as the lower structure, and the upper floor wall 1 is joined and fixed to the lower structure in the same manner as described above.

このようにして施工された壁1の接合構造では、図6に示すように、壁1に水平方向に地震力Fが作用して、壁1の剛体回転(ロッキング)による浮上りが生じると、つまり、壁1の四隅部のうち、上端部側の一方(右方)の隅部と、下端部側の他方(左方)の隅部とに浮き上がり(壁1の上端部側の一方の隅部は上構造物2に対して下方に離間するが、これも浮き上がりとする)が生じると、壁1の上端部側の右方の接合金物10の第2接続部13は上構造物2に接続され、第1接続部11は壁1に接続され、壁1の下端部側の左方の接合金物10の第2接続部13は下構造物3に接続され、第1接続部11は壁1に接続されているので、これら接合金物10,10の変形部12である第1捩り板12が引っ張られて変形軸線の方向に伸長して塑性変形し、剛性と耐力を確保しつつ、安定したエネルギ吸収性能を発揮できる。
一方、ロッキングが生じていない壁1の上端部側の他方(左方)の隅部と、下端部側の一方(右方)の隅部はそれぞれ上構造物2と下構造物3とに当接して支圧抵抗Rを受けることで、当該両隅部に設けられている接合金物10,10には圧縮力がほとんど作用しない。このため、壁1の剛体回転が繰り返し行われても、接合金物10の変形部12は、変形前の状態と伸びた状態との間で変形を繰り返すだけであるので、接合金物10,10の変形部12の拡幅(変形軸線と交差する方向への膨らみ)を防いで、当該変形部12の孔16の内周面への干渉を回避しながら、変形部12の座屈を防ぐことができる。このような機構により、地震力Fに対して、壁1はスリップ性状を抑えた安定した履歴特性によるエネルギ吸収性能を確保することができる。
In the joining structure of the wall 1 constructed in this way, as shown in FIG. 6, when the seismic force F acts on the wall 1 in the horizontal direction and the wall 1 is lifted by rigid rotation (rocking), That is, among the four corners of the wall 1, it floats to one (right) corner on the upper end side and the other (left) corner on the lower end side (one corner on the upper end side of the wall 1). Part is separated downward with respect to the upper structure 2, but this is also lifted), the second connecting portion 13 of the right joint 10 on the upper end side of the wall 1 is connected to the upper structure 2. The first connecting portion 11 is connected to the wall 1, the second connecting portion 13 of the left joint 10 on the lower end side of the wall 1 is connected to the lower structure 3, and the first connecting portion 11 is a wall 1, the first torsion plate 12, which is the deformed portion 12 of the joint hardware 10, 10, is pulled to extend in the direction of the deformation axis. Plastic deformation Te, while ensuring the rigidity and strength, can exhibit a stable energy absorption performance.
On the other hand, the other (left) corner on the upper end side of the wall 1 where no locking is generated and the one (right) corner on the lower end side contact the upper structure 2 and the lower structure 3, respectively. By contacting and receiving the bearing resistance R, the compressive force hardly acts on the metal joints 10 and 10 provided at both corners. For this reason, even if the rigid body rotation of the wall 1 is repeatedly performed, the deformed portion 12 of the metal joint 10 only repeats deformation between the state before the deformation and the stretched state. It is possible to prevent buckling of the deformable portion 12 while preventing widening of the deformable portion 12 (swelling in a direction intersecting the deformation axis) and avoiding interference with the inner peripheral surface of the hole 16 of the deformable portion 12. . With such a mechanism, the wall 1 can secure energy absorption performance with stable hysteresis characteristics with reduced slip properties against the seismic force F.

また、壁1の上端面の両端部および壁1の下端面の両端部にそれぞれ上下方向に延在して設けられた各孔16に接合金物10の変形部12がそれぞれ挿入され、壁1の内部に第1接続部11が各孔16の底面Uからそれぞれ挿入されて接続されているので、接合金物10の変形部12および第1接続部11は壁1の壁面から突出することがなく、壁1の内部に内蔵されることになる。したがって、壁1の仕上げ手間を低減することができる。
さらに、第1接続部11がラグスクリューで構成されているので、このラグスクリューを各孔16の底面Uから壁1の内部にねじ込むことによって、接合金物10を壁1に容易かつ確実に固定できる。
Further, the deformed portions 12 of the joint metal fitting 10 are respectively inserted into the holes 16 provided in both ends of the upper end surface of the wall 1 and both ends of the lower end surface of the wall 1 so as to extend in the vertical direction. Since the 1st connection part 11 is inserted and connected from the bottom face U of each hole 16, respectively, the deformation | transformation part 12 and the 1st connection part 11 of the joining metal fitting 10 do not protrude from the wall surface of the wall 1, It will be built inside the wall 1. Therefore, the labor for finishing the wall 1 can be reduced.
Furthermore, since the 1st connection part 11 is comprised by the lag screw, it can fix to the wall 1 easily and reliably by screwing this lag screw into the inside of the wall 1 from the bottom face U of each hole 16. FIG. .

(第2の実施の形態)
図7は第2の実施の形態に係る壁の接合構造を透視して示す正面図である。なお、図7でも、壁の内部に設ける接合金物を実線で示している。
本実施の形態に係る接合金物および壁の接合構造が第1の実施の形態と異なる点は接合金物20の変形部の構成であるので、以下ではこの相違点について説明し、第1の実施の形態と同一構成については同一符号を付してその説明を省略ないし簡略化する。
(Second Embodiment)
FIG. 7 is a front view of the wall joint structure according to the second embodiment seen through. In FIG. 7 as well, the joint hardware provided inside the wall is indicated by a solid line.
Since the joint metal and wall joint structure according to the present embodiment is different from the first embodiment in the configuration of the deformed portion of the joint hardware 20, this difference will be described below and the first embodiment will be described. The same reference numerals are given to the same configuration as the form, and the description thereof is omitted or simplified.

本実施の形態では、変形部22は第1の実施の形態における変形部12より変形軸線方向の長さが長くなっており、変形軸線まわりに一方側へ捩れている第1変形部22aと、この第1変形部22aと変形軸線の軸方向に繋がれ、変形軸線まわりに他方側へ捩れている第2変形部22bとから構成されている。
すなわち、変形部22は、当該変形部22を変形軸線の方向に二等分する二等分線L2を挟んで対称に形成されている。この変形部22の長手方向の一端部は第1接続部11に固定され、他端部は第2接続部13に固定されている。
また、変形部22において、第1接続部11と二等分線L2との間の部分(第2変形部22b)は、第1接続部11側から見て反時計回り方向に螺旋状に捩れており、第2接続部13と二等分線L2との間の部分(第1変形部22a)は、第2接続部13側から見て時計回り方向に螺旋状に捩れている。つまり、第2変形部22bと第1変形部22aとは反対方向に捩れている。
また、孔16の軸方向の長さも変形部22の全体を挿入できるように、第1の実施の形態における孔16より長くなっている。
In the present embodiment, the deformable portion 22 has a longer length in the deformation axis direction than the deformable portion 12 in the first embodiment, and the first deformable portion 22a twisted to one side around the deformable axis, The first deformable portion 22a is connected to the axial direction of the deformed axis, and the second deformable portion 22b is twisted to the other side around the deformed axis.
That is, the deforming portion 22 is formed symmetrically across a bisector L2 that bisects the deforming portion 22 in the direction of the deformation axis. One end of the deformable portion 22 in the longitudinal direction is fixed to the first connecting portion 11, and the other end is fixed to the second connecting portion 13.
Further, in the deformable portion 22, a portion (second deformable portion 22 b) between the first connecting portion 11 and the bisector L <b> 2 is helically twisted in the counterclockwise direction when viewed from the first connecting portion 11 side. The portion between the second connecting portion 13 and the bisector L2 (first deforming portion 22a) is twisted spirally in the clockwise direction when viewed from the second connecting portion 13 side. That is, the 2nd deformation part 22b and the 1st deformation part 22a are twisted in the opposite direction.
Further, the length of the hole 16 in the axial direction is longer than that of the hole 16 in the first embodiment so that the entire deformable portion 22 can be inserted.

本実施の形態によれば、第1の実施の形態と同様の効果を得ることができる他、次のような効果を得ることができる。すなわち、変形部22の第1変形部22aが捩れている方向と第2変形部22bが捩れている方向とが反対方向とされているため、第1変形部22aと第2変形部22bとの間の部位(二等分線L2近傍の部位)が変形軸線のまわりに回転しながら、第1変形部22aおよび第2変形部22bが変形される。
これにより、第1変形部22aおよび第2変形部22bが変形される際における当該第1変形部22aおよび第2変形部22bの局所的な応力の高まりが、第1の実施の形態における変形部12のように同じ方向へ捩れている場合に比べて抑制される。その結果、第1変形部22aおよび第2変形部22bが繰り返し変形される際の局所的な応力の進展による局所的な塑性化や疲労による破壊を抑制して、エネルギ吸収荷重(第1接続部11と第2接続部13との相対位置の変化を妨げる方向に作用する荷重)を安定させることができる。
According to the present embodiment, the same effects as those of the first embodiment can be obtained, and the following effects can be obtained. That is, since the direction in which the first deformation portion 22a of the deformation portion 22 is twisted is opposite to the direction in which the second deformation portion 22b is twisted, the first deformation portion 22a and the second deformation portion 22b The first deforming portion 22a and the second deforming portion 22b are deformed while the portion between them (the portion in the vicinity of the bisector L2) rotates around the deformation axis.
As a result, when the first deformable portion 22a and the second deformable portion 22b are deformed, the local stress increase in the first deformable portion 22a and the second deformable portion 22b is caused by the deformable portion in the first embodiment. This is suppressed as compared to the case of twisting in the same direction as in FIG. As a result, energy absorption load (first connecting portion) is suppressed by suppressing local plasticization due to local stress development and fracture due to fatigue when the first deforming portion 22a and the second deforming portion 22b are repeatedly deformed. 11 and a load acting in a direction that prevents a change in the relative position between the second connecting portion 13 and the second connecting portion 13) can be stabilized.

(第3の実施の形態)
図8は第3の実施の形態に係る壁の接合構造を透視して示す正面図である。なお、図8でも、壁の内部に設ける接合金物を実線で示している。
本実施の形態に係る接合金物および壁の接合構造が第1の実施の形態と異なる点は接合金物30の第1接続部21の構成であるので、以下ではこの相違点について説明し、第1の実施の形態と同一構成については同一符号を付してその説明を省略ないし簡略化する。
(Third embodiment)
FIG. 8 is a front view of the wall joint structure according to the third embodiment seen through. In FIG. 8 as well, the joint hardware provided inside the wall is indicated by a solid line.
The difference between the joint structure of the joint metal and the wall according to the present embodiment and the first embodiment is the configuration of the first connection portion 21 of the joint hardware 30. Therefore, this difference will be described below. The same components as those in the embodiment are denoted by the same reference numerals, and the description thereof is omitted or simplified.

本実施の形態では、第1接続部21は第1捩り板(変形部)12の変形軸線と同軸の変形軸線に沿って当該変形軸線まわりに第1捩り板(変形部)12と同方向に螺旋状に捩れた第2捩り板21によって構成されているとともに、第2捩り板21の最大直径D2は第1捩り板12の最大直径D1と概ね等しくなっている。
また、第2捩り板21の単位長さL当りの捩り角度θと、第1捩り板12の単位長さL当りの捩り角度θとが異なっており、第2捩り板21の方が第1捩り板12より単位長さ当りの捩り角度θが大きくなっている。なお、単位長さLは適宜設定すればよく、ここでは第1捩り板12および第2捩り板21の最大直径D(D1、D2)に対してL=3.0Dとしている。具体的には、第1捩り板12の単位長さL当りの捩り角度θは360°となっており、第1捩り板12は全長1.5Lにおいて540°捩れている。また、単位長さL当りの第2捩り板21の捩り角度は720°となっており、第2捩り板21は全長1.0Lにおいて720°捩れている。
孔16の底面Uには第2捩り板21の形状に合わせた螺旋状の下穴P2を形成しており、この下穴P2に第2捩り板(第1接続部)21をねじ込むことによって、接合金物30は壁1に接続されている。
In the present embodiment, the first connecting portion 21 is in the same direction as the first torsion plate (deformation portion) 12 around the deformation axis along the deformation axis that is coaxial with the deformation axis of the first torsion plate (deformation portion) 12. The second torsion plate 21 is helically twisted, and the maximum diameter D2 of the second torsion plate 21 is substantially equal to the maximum diameter D1 of the first torsion plate 12.
Further, the twist angle θ per unit length L of the second torsion plate 21 is different from the twist angle θ per unit length L of the first torsion plate 12, and the second torsion plate 21 is the first one. The twist angle θ per unit length is larger than that of the twist plate 12. The unit length L may be set as appropriate. Here, L = 3.0D with respect to the maximum diameter D (D1, D2) of the first torsion plate 12 and the second torsion plate 21. Specifically, the twist angle θ per unit length L of the first torsion plate 12 is 360 °, and the first torsion plate 12 is twisted by 540 ° over the entire length of 1.5L. Further, the twist angle of the second torsion plate 21 per unit length L is 720 °, and the second torsion plate 21 is twisted by 720 ° over the entire length of 1.0 L.
A spiral pilot hole P2 that matches the shape of the second torsion plate 21 is formed on the bottom surface U of the hole 16, and the second torsion plate (first connecting portion) 21 is screwed into the pilot hole P2. The joint hardware 30 is connected to the wall 1.

本実施の形態によれば、第1の実施の形態と同様の効果を得ることができる他、次のような効果を得ることができる。
すなわち、第2捩り板(第1接続部)21の方が第1捩り板12より単位長さL当りの捩り角度θが大きくなっているので、つまり、第2捩り板(第1接続部)21の単位長さL当りの捩り量が第1捩り板12により多くなっているので、第2捩り板(第1接続部)21が壁1の内部にねじ込まれて螺合した場合の引抜き抵抗を高めることができる。したがって、第2捩り板21を第1捩り板12と捩り角度θを等しくした場合に比して、第2捩り板(第1接続部)21の軸方向における長さを小さくすることができる。
According to the present embodiment, the same effects as those of the first embodiment can be obtained, and the following effects can be obtained.
That is, the second torsion plate (first connection portion) 21 has a larger twist angle θ per unit length L than the first torsion plate 12, that is, the second torsion plate (first connection portion). Since the torsion amount per unit length L of 21 is greater in the first torsion plate 12, the drawing resistance when the second torsion plate (first connecting portion) 21 is screwed into the wall 1 and screwed together Can be increased. Accordingly, the axial length of the second torsion plate (first connection portion) 21 can be reduced as compared with the case where the second torsion plate 21 has the same twist angle θ as that of the first torsion plate 12.

なお、本実施の形態において、第1捩り板(変形部)12を、第2の実施の形態における第1捩り板(変形部)22に変更してもよい。   In the present embodiment, the first twist plate (deformed portion) 12 may be changed to the first twist plate (deformed portion) 22 in the second embodiment.

図9(a),(b)は第3の実施の形態における接合金物30の変形例を示す正面図である。
図9(a)に示す接合金物30では、第2捩り板(第1接続部)21aと第1捩り板(変形部)12の単位長さ当りの捩り角度θおよび変形軸線方向の長さが等しくなっている。
このような構成によれば、第2捩り板(第1接続部)21aおよび第1捩り板(変形部)12を同様に形成できるので、接合金物10の製造が第3の実施の形態に比して容易となる。
FIGS. 9A and 9B are front views showing a modified example of the metal joint 30 in the third embodiment.
9A, the torsion angle θ and the length in the deformation axis direction per unit length of the second torsion plate (first connection portion) 21a and the first torsion plate (deformation portion) 12 are the same. Are equal.
According to such a configuration, the second torsion plate (first connection portion) 21a and the first torsion plate (deformation portion) 12 can be formed in the same manner, so that the manufacturing of the joint hardware 10 is compared to the third embodiment. And it becomes easy.

図9(b)に示す接合金物30では、第2捩り板(第1接続部)21aの方が第1捩り板(変形部)12aより単位長さ当りの捩り角度θが小さくなっている。また、第1捩り板(変形部)12aは第3の実施の形態における第1捩り板(変形部)12より単位長さ当りの捩り角度が大きくなっている。
このような構成によれば、第1捩り板(変形部)12aの単位当たりの捩り角度θが大きくなっている、つまり捩り量が多くなっているので、第1捩り板(変形部)12aが塑性変形してエネルギを吸収する際の耐力上昇を抑制できる。
9B, the second twisted plate (first connecting portion) 21a has a smaller twist angle θ per unit length than the first twisted plate (deformed portion) 12a. Further, the first torsion plate (deformation portion) 12a has a larger twist angle per unit length than the first torsion plate (deformation portion) 12 in the third embodiment.
According to such a configuration, the torsion angle θ per unit of the first torsion plate (deformation part) 12a is large, that is, the torsion amount is large, so that the first torsion plate (deformation part) 12a is An increase in yield strength when absorbing plastic energy by plastic deformation can be suppressed.

このように、第1捩り板12,12aの単位長さ当りの捩り角度と第2捩り板21,21aの捩り角度を一致させたり、また、適宜異ならせることによって、第1捩り板12,12aに要するエネルギ吸収能、剛性および耐力を調整できるとともに、第2捩り板(第1接続部)21,21aに要する剛性、耐力および壁1への接続抵抗を調整できる。   As described above, the first torsion plates 12 and 12a can be obtained by making the torsion angles per unit length of the first torsion plates 12 and 12a coincide with the torsion angles of the second torsion plates 21 and 21a or appropriately different from each other. The energy absorption capacity, rigidity and proof stress required for the second torsion plates (first connection portions) 21 and 21a can be adjusted, and the rigidity, proof stress and connection resistance to the wall 1 can be adjusted.

次に、有限要素法によって、変形部(第1捩り板)の変形性状(変形部の軸方向の変形)、剛性、耐力、エネルギ吸収性能を解析した結果を説明する。
図10は解析モデルを示す。この解析モデルでは、変形部(第1捩り板)の寸法を、幅B、単位長さL、板厚t、単位長さLあたりの捩り角度θ、で表す。解析条件は以下の通りである。
(1)支持点側の端面は支持点(軸回りの回転拘束)に剛梁で結合し、載荷点側の端面は載荷点(軸回りの回転拘束)に剛梁で結合する。
(2)幅B=60mm、単位長さL=180mm、板厚t=6.0mmの第1捩り板を対象とする。
(3)第1捩り板の材料として鋼板を適用し、物性はヤング係数205Gpa、ポアソン比0.3、降伏点200Mpa、降伏後の加工硬化特定はマルチリニアの曲線で付与する。
(4)第1捩り板の単位長さ当たり捩り角度θ(単位長さLに対する捩り角度)を360°、540°として、形状の影響を確認する。
Next, the results of analyzing the deformability (deformation in the axial direction of the deformed portion), rigidity, proof stress, and energy absorption performance of the deformed portion (first torsion plate) by the finite element method will be described.
FIG. 10 shows an analysis model. In this analysis model, the dimension of the deformed portion (first torsion plate) is represented by a width B, a unit length L, a plate thickness t, and a twist angle θ per unit length L. The analysis conditions are as follows.
(1) The end surface on the support point side is coupled to the support point (rotation constraint around the axis) with a rigid beam, and the end surface on the load point side is coupled to the load point (rotation constraint about the axis) with a rigid beam.
(2) A first torsion plate having a width B = 60 mm, a unit length L = 180 mm, and a plate thickness t = 6.0 mm is an object.
(3) A steel plate is applied as the material of the first twisted plate, the physical properties are Young's modulus 205 Gpa, Poisson's ratio 0.3, yield point 200 Mpa, and work hardening after yielding is given by a multi-linear curve.
(4) The influence of the shape is confirmed by setting the twist angle θ per unit length of the first twist plate (twist angle with respect to the unit length L) to 360 ° and 540 °.

解析結果を図11に示す。図11に示すグラフでは、横軸は変形部(第1捩り板)の単位長さLに対する変形量δの比率(δ/L)であり、縦軸は鋼板の引張降伏耐力(Ny:断面積に降伏応力を乗じた値)に対する変形部が軸方向に受ける荷重(エネルギ吸収荷重)Pの比率(P/Ny)である。
図11に示すグラフから明らかなように、第1捩り板(変形部)の単位長さ当たりの捩り角度θが小さいほど、同じ変形量δ(比率δ/L)における変形部の変形抵抗に相当する荷重P(比率P/Ny)が大きくなる。
したがって、捩り角度を適宜調整することによって、変形部(第1捩り板)に要するエネルギ吸収能、剛性および耐力を調整できる。
The analysis results are shown in FIG. In the graph shown in FIG. 11, the horizontal axis is the ratio (δ / L) of the deformation amount δ to the unit length L of the deformed portion (first torsion plate), and the vertical axis is the tensile yield strength (Ny: cross-sectional area) of the steel plate. Is the ratio (P / Ny) of the load (energy absorption load) P that the deformed portion receives in the axial direction with respect to (multiplied by the yield stress).
As is clear from the graph shown in FIG. 11, the smaller the twist angle θ per unit length of the first torsion plate (deformed portion), the more equivalent to the deformation resistance of the deformed portion at the same deformation amount δ (ratio δ / L). Load P (ratio P / Ny) to be increased.
Therefore, by appropriately adjusting the torsion angle, it is possible to adjust the energy absorption capability, rigidity, and proof stress required for the deformable portion (first torsion plate).

(第4の実施の形態)
図12は第4の実施の形態に係る壁の接合構造を透視して示す正面図、図13は同側面図である。なお、図12および図13でも、壁の内部に設ける接合金物を実線で示している。
本実施の形態に係る接合金物および壁の接合構造が第1の実施の形態と異なる点は接合金物40の第1接続部41の構成であるので、以下ではこの相違点について説明し、第1の実施の形態と同一構成については同一符号を付してその説明を省略ないし簡略化する。
(Fourth embodiment)
FIG. 12 is a front view showing a wall joining structure according to the fourth embodiment as seen through, and FIG. 13 is a side view thereof. In FIG. 12 and FIG. 13 as well, the joint hardware provided inside the wall is indicated by a solid line.
Since the joint metal and wall joint structure according to the present embodiment is different from the first embodiment in the configuration of the first connecting portion 41 of the joint hardware 40, this difference will be described below. The same components as those in the embodiment are denoted by the same reference numerals, and the description thereof is omitted or simplified.

本実施の形態では第1接続部41は、縦長の矩形板状の板状部材41aと、複数本のドリフトピン等のピン41bとを備えている。
板状部材41aの幅D3は、変形部(第1捩り板)12の最大直径D4と概ね等しくなっている。また、孔16の底面Uには板状部材41aを挿入するための溝P3が形成され、この溝P3に板状部材41aが挿入されている。また、板状部材41aにはピン41bを挿入するためのピン孔が上下に所定間隔で複数設けられている。
また、壁1の前記溝P3と対向する表面には当該表面から裏面に貫通する貫通孔が設けられている。貫通孔は上下に所定間隔で複数設けられるとともに、板状部材41aに設けられたピン孔と同軸に配置されている。
そして、壁1の表面側からピン41bを貫通孔およびピン孔に挿通して固定することによって、第1接続部41が壁1に接続されている。
In the present embodiment, the first connection portion 41 includes a vertically long rectangular plate-like plate-like member 41 a and a plurality of pins 41 b such as drift pins.
The width D3 of the plate-like member 41a is substantially equal to the maximum diameter D4 of the deformed portion (first torsion plate) 12. Further, a groove P3 for inserting the plate-like member 41a is formed in the bottom surface U of the hole 16, and the plate-like member 41a is inserted into the groove P3. The plate-like member 41a is provided with a plurality of pin holes for inserting the pins 41b at predetermined intervals.
Further, a through-hole penetrating from the surface to the back surface is provided on the surface of the wall 1 facing the groove P3. A plurality of through holes are provided at predetermined intervals in the vertical direction, and are disposed coaxially with the pin holes provided in the plate-like member 41a.
The first connecting portion 41 is connected to the wall 1 by inserting and fixing the pin 41b from the surface side of the wall 1 through the through hole and the pin hole.

本実施の形態によれば、第1の実施の形態と同様の効果を得ることができる他、次のような効果を得ることができる。
すなわち、第1の実施の形態では第1接続部11がラグスクリューで構成されているので、第1接続部11を壁1に接続する場合は、接合金物10を軸回りに回転させながら孔16の底面Uに設けられた下穴にねじ込む必要があるため、第2接続部13の軸回り方向の位置を考慮して、第1接続部11をねじ込む必要があるが、本実施の形態では、第1接続部41が板状部材41aと、これを壁1に固定するピン41bとを備えているので、第1接続部41を壁1に接続する場合に、接合金物40を回転させることなく、板状部材41aを孔16の底面Uに設けられた溝P3に挿入して、ピン42bを挿通すればよい。このため、第2接続部13の軸回り回転方向の位置決めが容易であるという利点がある。
According to the present embodiment, the same effects as those of the first embodiment can be obtained, and the following effects can be obtained.
That is, in the first embodiment, since the first connection portion 11 is constituted by a lag screw, when the first connection portion 11 is connected to the wall 1, the hole 16 is rotated while the metal joint 10 is rotated around the axis. It is necessary to screw in the first connection part 11 in consideration of the position of the second connection part 13 in the direction around the axis. Since the 1st connection part 41 is provided with the plate-shaped member 41a and the pin 41b which fixes this to the wall 1, when connecting the 1st connection part 41 to the wall 1, without rotating the joining metal fitting 40 The plate-like member 41a may be inserted into the groove P3 provided in the bottom surface U of the hole 16 and the pin 42b may be inserted. For this reason, there exists an advantage that the positioning of the rotation direction around an axis of the 2nd connection part 13 is easy.

1 壁
2 上構造物
3 下構造物
10,20,30,40 接合金物
11,21,21a,41 第1接続部
12,12a 変形部(第1捩り板)
13 第2接続部
16 孔
21 第2捩り板(第1接続部)
22 変形部
22a 第1変形部
22b 第2変形部
DESCRIPTION OF SYMBOLS 1 Wall 2 Upper structure 3 Lower structure 10, 20, 30, 40 Joint metal | frame 11, 21, 21, 21a, 41 1st connection part 12, 12a Deformation part (1st twist board)
13 2nd connection part 16 hole 21 2nd twist board (1st connection part)
22 deformation part 22a first deformation part 22b second deformation part

Claims (6)

壁の上方に位置する上構造物および/または前記壁の下方に位置する下構造物に前記壁を接合する接合金物であって、
前記壁の上端部および/または下端部に接続される第1接続部と、塑性変形によりエネルギを吸収可能な変形部と、前記上構造物および/または下構造物に接続される第2接続部とを備え、
前記変形部が変形軸線に沿って当該変形軸線まわりに捩れた第1捩り板によって構成され、
前記変形部の前記変形軸線に沿う一端部に前記第1接続部が設けられ、他端部に前記第2接続部が設けられていることを特徴とする接合金物。
A metal fitting for joining the wall to an upper structure located above the wall and / or a lower structure located below the wall,
A first connection portion connected to the upper end portion and / or the lower end portion of the wall; a deformation portion capable of absorbing energy by plastic deformation; and a second connection portion connected to the upper structure and / or the lower structure. And
The deformable portion is constituted by a first torsion plate twisted around the deformation axis along the deformation axis;
The joint hardware according to claim 1, wherein the first connection portion is provided at one end portion along the deformation axis of the deformation portion, and the second connection portion is provided at the other end portion.
前記第1接続部がねじ状部材によって構成されていることを特徴とする請求項1に記載の接合金物。   2. The metal joint according to claim 1, wherein the first connection portion is constituted by a screw-like member. 前記第1接続部が、前記第1捩り板の前記変形軸線と同軸の変形軸線に沿って当該変形軸線まわりに捩れた第2捩り板によって構成されていることを特徴とする請求項1に記載の接合金物。   The said 1st connection part is comprised by the 2nd torsion board twisted around the said deformation | transformation axis along the deformation | transformation axis line coaxial with the said deformation | transformation axis line of the said 1st twist board. Bonding hardware. 前記第2捩り板の単位長さ当りの捩り角度と、前記第1捩り板の単位長さ当りの捩り角度とが異なることを特徴とする請求項3に記載の接合金物。   The metal joint according to claim 3, wherein a twist angle per unit length of the second torsion plate is different from a twist angle per unit length of the first torsion plate. 前記変形部が、前記変形軸線まわりに一方側へ捩れている第1変形部と、この第1変形部と前記変形軸線の軸方向に繋がれ、前記変形軸線まわりに他方側へ捩れている第2変形部とを備えていることを特徴とする請求項1〜4のいずれか1項に記載の接合金物。   The deformation portion is connected to the first deformation portion twisted to one side around the deformation axis, and is connected to the first deformation portion and the deformation axis in the axial direction, and is twisted to the other side around the deformation axis. It has 2 deformation | transformation parts, The joining metal fitting of any one of Claims 1-4 characterized by the above-mentioned. 壁の上方に位置する上構造物および/または前記壁の下方に位置する下構造物に、壁を請求項1〜5のいずれか1項に記載の接合金物によって接合した壁の接合構造であって、
前記壁の上端面および/または下端面に上下方向に延在する孔が設けられ、
前記各孔に前記接合金物の前記変形部が挿入され、前記壁の内部に前記第1接続部が前記各孔の底面から挿入されて接続され、前記上構造物および/または前記下構造物に前記第2接続部が接続されていることを特徴とする壁の接合構造。
A wall joining structure in which a wall is joined to the upper structure located above the wall and / or the lower structure located below the wall by the joining hardware according to any one of claims 1 to 5. And
A hole extending in the vertical direction is provided in the upper end surface and / or the lower end surface of the wall,
The deformed portion of the bonding hardware is inserted into each hole, and the first connection portion is inserted and connected to the inside of the wall from the bottom surface of each hole, and is connected to the upper structure and / or the lower structure. The wall connection structure, wherein the second connection portion is connected.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112411833A (en) * 2020-12-30 2021-02-26 杭州圣奥控股有限公司 Decorative modeling column for grid type building curtain wall
JP7052954B2 (en) 2018-12-25 2022-04-12 株式会社竹中工務店 Seismic wall structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7052954B2 (en) 2018-12-25 2022-04-12 株式会社竹中工務店 Seismic wall structure
CN112411833A (en) * 2020-12-30 2021-02-26 杭州圣奥控股有限公司 Decorative modeling column for grid type building curtain wall

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