JP7681242B2

JP7681242B2 - Shear wall panel connection structure

Info

Publication number: JP7681242B2
Application number: JP2022077389A
Authority: JP
Inventors: 哲文堤; 和己土方; 岳士中川; 輝廣瀬
Original assignee: Sekisui House Ltd
Current assignee: Sekisui House Ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2025-05-22
Anticipated expiration: 2042-05-10
Also published as: JP2023166697A

Description

本発明は、建築物の水平耐力を負担する耐力壁パネルを設置する耐力壁パネル接続構造に関する。 The present invention relates to a bearing wall panel connection structure for installing bearing wall panels that bear the horizontal load of a building.

耐力壁として直交集成板（ＣＬＴ）等の中実で高剛性の木製板を用いることで、耐力壁量を減らしつつ、建築物の耐震性を確保し、建築物の外周に大きな開口部を設けるなどの設計の自由度を高めることができる。このような直交集成板などの耐力壁パネルは、耐力壁パネル自体がほとんど変形することができず、基礎、梁、床などの構造躯体との接合部に力が集中する問題があった。 By using solid, high-rigidity wooden panels such as cross-laminated timber (CLT) as load-bearing walls, it is possible to reduce the amount of load-bearing wall while ensuring the earthquake resistance of the building and increasing the design freedom, such as by providing large openings around the perimeter of the building. Such load-bearing wall panels such as cross-laminated timber are almost unable to deform themselves, and there is an issue of forces concentrating at the joints with the structural frame such as the foundation, beams, and floors.

そこで、耐力壁パネルを基礎、梁、床などの構造躯体に接合する接合金物に変形性能を持たせて、地震などで建築物に加わる水平力を吸収することが知られている。例えば特許文献１には、木質の耐力壁パネルと木質の梁との間に降伏可能な接合金物を設けて、耐力壁パネルに加わる水平力を接合金物の変形に寄って吸収する構成が記載されている。また、特許文献２及び特許文献３には、上端隅又は下端隅に切欠部が形成された耐力壁パネルであり、梁などの構造躯体に打ち込まれるアンカーによって固定された接合金物が切欠部に配置されて耐力壁パネルに変形可能に接合される構成が記載されている。 It is known that metal joints that join load-bearing wall panels to structural members such as foundations, beams, and floors can be made to have deformation capabilities to absorb horizontal forces applied to buildings due to earthquakes, etc. For example, Patent Document 1 describes a configuration in which a yieldable metal joint is provided between a wooden load-bearing wall panel and a wooden beam, and horizontal forces applied to the load-bearing wall panel are absorbed by the deformation of the metal joint. Patent Documents 2 and 3 describe a load-bearing wall panel with a notch formed in the upper or lower corner, in which a metal joint is fixed by an anchor driven into a structural member such as a beam and is placed in the notch to be deformably joined to the load-bearing wall panel.

特開２０１９－１９６６６９号公報JP 2019-196669 A 特開２０１８－１６２６０２号公報JP 2018-162602 A 特開２０２２－１５２４０号公報JP 2022-15240 A

ところで、耐力壁パネルと梁などの構造躯体とが当接している場合には、接合金物の変形によって水平力を吸収した場合であっても、耐力壁パネルの角や接合金物自体が構造躯体にめり込み、構造躯体が損傷するおそれがある。また、建築物に加わる水平力を吸収して接合金物が変形した場合に、接合金物を交換するためには、耐力壁パネルを構造躯体から取り外して、接合金物を交換し、再度耐力壁パネルを取り付ける作業が必要となる。 However, when a load-bearing wall panel abuts against a structural frame such as a beam, even if the horizontal force is absorbed by the deformation of the metal joints, the corners of the load-bearing wall panel or the metal joints themselves may sink into the structural frame, causing damage to the structural frame. Furthermore, if the metal joints deform when absorbing horizontal forces applied to the building, in order to replace them, it is necessary to remove the load-bearing wall panel from the structural frame, replace the metal joints, and then reinstall the load-bearing wall panel.

そこで、本発明は、梁などの構造躯体を損傷することなく、接合部で水平力を吸収することができるとともに、水平力を吸収することで変形した部材を、耐力壁パネルを取り外すことなく交換することができる耐力壁パネル接続構造を提供することを目的とする。 The present invention aims to provide a bearing wall panel connection structure that can absorb horizontal forces at the joints without damaging structural members such as beams, and that allows members that have become deformed as a result of absorbing horizontal forces to be replaced without removing the bearing wall panel.

本発明の耐力壁パネル接続構造は、矩形平板状に形成されて、建築物の水平耐力を負担する耐力壁パネルと、前記耐力壁パネルの上端又は下端から突出して形成される固定プレートと、前記建築物の構造部材の水平面から鉛直方向に突出し、前記固定プレートの突出端部に突き合わせられて、当該固定プレートと面一となる突出プレートと、前記耐力壁パネルの面外方向から前記固定プレート及び前記突出プレートに固定されて、当該固定プレート及び前記突出プレートを接続する接続部材と、を備え、前記接続部材は、前記耐力壁パネルから伝わる水平力によって塑性変形可能であるとともに、前記固定プレート及び前記突出プレートに着脱可能に固定され、前記接続部材は、前記固定プレート及び前記突出プレートに当接して、それぞれのプレートにボルト及びナットで接合される矩形の接合板と、前記接合板の周縁に、当該接合板に対して垂直な平板状に形成される枠板と、を有することを特徴としている。 The present invention relates to a structure for connecting a load-bearing wall panel to a load-bearing wall panel. The load-bearing wall panel may be formed as a rectangular flat plate and used to bear the horizontal load of a building. A fixing plate formed to protrude from the upper or lower end of the load-bearing wall panel. A protruding plate protrudes vertically from the horizontal surface of a structural member of the building and is abutted against the protruding end of the fixing plate so as to be flush with the fixing plate. A connecting member is fixed to the fixing plate and the protruding plate from the outside of the surface of the load-bearing wall panel and connects the fixing plate and the protruding plate. The connecting member is plastically deformable by the horizontal force transmitted from the load-bearing wall panel and is detachably fixed to the fixing plate and the protruding plate. The connecting member has a rectangular connecting plate which abuts against the fixing plate and the protruding plate and is joined to each plate with bolts and nuts, and a frame plate formed on the periphery of the connecting plate in a flat shape perpendicular to the connecting plate .

本発明の耐力壁パネル接続構造は、前記耐力壁パネルは、上下に並べて配置されるものであり、前記構造部材は、上下２つの前記耐力壁パネルの間に形成される木製梁であり、前記固定プレートは、上側の前記耐力壁パネルの下端から下方に突出して形成される第一の固定プレートと、下側の前記耐力壁パネルの上端から上方に突出して形成される第二の固定プレートと、を有し、前記突出プレートは、前記木製梁の上面から上方に突出する第一の突出プレートと、前記木製梁の下面から下方に突出する第二の突出プレートと、を有し、前記接続部材は、前記第一の固定プレートと前記第一の突出プレートとを接続する第一接続部材と、前記第二の固定プレートと前記第二の突出プレートとを接続する第二接続部材と、を有し、前記第一の突出プレートと前記第二の突出プレートとは、前記木製梁を上下方向に貫通する貫通連結材によって連結されることを特徴としている。 In the load-bearing wall panel connection structure of the present invention, the load-bearing wall panels are arranged one above the other, the structural member is a wooden beam formed between the two load-bearing wall panels, the fixing plate has a first fixing plate formed protruding downward from the lower end of the upper load-bearing wall panel and a second fixing plate formed protruding upward from the upper end of the lower load-bearing wall panel, the protruding plate has a first protruding plate protruding upward from the upper surface of the wooden beam and a second protruding plate protruding downward from the lower surface of the wooden beam, the connecting member has a first connecting member connecting the first fixing plate and the first protruding plate and a second connecting member connecting the second fixing plate and the second protruding plate, and the first protruding plate and the second protruding plate are connected by a penetrating connecting member that penetrates the wooden beam in the vertical direction .

本発明の耐力壁パネル接続構造は、矩形平板状に形成されて、建築物の水平耐力を負担する耐力壁パネルと、前記耐力壁パネルの上端又は下端から突出して形成される固定プレートと、前記建築物の構造部材の水平面から鉛直方向に突出し、前記固定プレートの突出端部に突き合わせられて、当該固定プレートと面一となる突出プレートと、前記耐力壁パネルの面外方向から前記固定プレート及び前記突出プレートに固定されて、当該固定プレート及び前記突出プレートを接続する接続部材と、を備え、前記接続部材は、前記耐力壁パネルから伝わる水平力によって塑性変形可能であるとともに、前記固定プレート及び前記突出プレートに着脱可能に固定され、前記耐力壁パネルは、上下に並べて配置されるものであり、前記構造部材は、上下２つの前記耐力壁パネルの間に形成される木製梁であり、前記固定プレートは、上側の前記耐力壁パネルの下端から下方に突出して形成される第一の固定プレートと、下側の前記耐力壁パネルの上端から上方に突出して形成される第二の固定プレートと、を有し、前記突出プレートは、前記木製梁の上面から上方に突出する第一の突出プレートと、前記木製梁の下面から下方に突出する第二の突出プレートと、を有し、前記接続部材は、前記第一の固定プレートと前記第一の突出プレートとを接続する第一接続部材と、前記第二の固定プレートと前記第二の突出プレートとを接続する第二接続部材と、を有し、前記第一の突出プレートと前記第二の突出プレートとは、前記木製梁を上下方向に貫通する貫通連結材によって連結されることを特徴としている。 The load-bearing wall panel connection structure of the present invention comprises a load-bearing wall panel formed in a rectangular flat plate shape and bearing the horizontal load-bearing force of a building, a fixing plate formed to protrude from the upper end or lower end of the load-bearing wall panel, a protruding plate protruding in a vertical direction from the horizontal surface of a structural member of the building and abutting against the protruding end of the fixing plate to be flush with the fixing plate, and a connecting member fixed to the fixing plate and the protruding plate from the outside of the surface of the load-bearing wall panel to connect the fixing plate and the protruding plate, the connecting member being plastically deformable by the horizontal force transmitted from the load-bearing wall panel and being detachably fixed to the fixing plate and the protruding plate, the load-bearing wall panels being arranged one above the other, and the structural member being two upper and lower connecting members. a wooden beam formed between the load-bearing wall panels, the fixing plate having a first fixing plate formed protruding downward from the lower end of the upper load-bearing wall panel and a second fixing plate formed protruding upward from the upper end of the lower load-bearing wall panel, the protruding plate having a first protruding plate protruding upward from the upper surface of the wooden beam and a second protruding plate protruding downward from the lower surface of the wooden beam, the connecting member having a first connecting member connecting the first fixing plate and the first protruding plate and a second connecting member connecting the second fixing plate and the second protruding plate, and the first protruding plate and the second protruding plate are connected by a penetrating connecting member that penetrates the wooden beam in the vertical direction .

本発明の耐力壁パネル接続構造は、前記貫通連結材は、前記第一の突出プレート及び前記第二の突出プレートのいずれか一方に固定される筒状の受入部と、前記第一の突出プレート及び前記第二の突出プレートのいずれか他方に固定され、前記受入部に挿入される挿入部と、有し、前記木製梁に形成された水平な水平孔に挿入されるピンが前記受入部及び挿入部を貫通することで前記受入部及び挿入部が連結されることを特徴としている。 The bearing wall panel connection structure of the present invention is characterized in that the penetrating connecting member has a cylindrical receiving portion fixed to either the first protruding plate or the second protruding plate, and an insert portion fixed to the other of the first protruding plate or the second protruding plate and inserted into the receiving portion, and the receiving portion and the insert portion are connected by a pin inserted into a horizontal hole formed in the wooden beam penetrating the receiving portion and the insert portion.

本発明の耐力壁パネル接続構造は、前記水平孔は、前記ピンの径よりも大きい形成されており、前記ピンとの間に隙間が形成されることを特徴としている。 The load-bearing wall panel connection structure of the present invention is characterized in that the horizontal hole is formed to be larger than the diameter of the pin, and a gap is formed between the pin and the horizontal hole.

本発明の耐力壁パネル接続構造は、前記固定プレート、前記突出プレート、及び前記接続部材は、所定の耐火性能を有する鋼製であり、前記耐力壁パネルは木製耐力壁パネルであり、前記耐力壁パネルと、前記木製梁と、の間に耐火板材が配置されることを特徴としている。 The bearing wall panel connection structure of the present invention is characterized in that the fixing plate, the protruding plate, and the connection member are made of steel having a predetermined fire resistance, the bearing wall panel is a wooden bearing wall panel, and a fireproof plate material is arranged between the bearing wall panel and the wooden beam.

本発明の耐力壁パネル接続構造は、前記構造部材は、鉄筋コンクリート製又は鋼製であり、前記突出プレートは、前記構造部材に固定されて上方に突出し、前記固定プレートは、前記耐力壁パネルの下端から突出して前記突出プレートに突き合わされて、前記接続部材が、前記固定プレート及び前記突出プレートを接続することを特徴としている。 The bearing wall panel connection structure of the present invention is characterized in that the structural member is made of reinforced concrete or steel, the protruding plate is fixed to the structural member and protrudes upward, the fixing plate protrudes from the lower end of the bearing wall panel and abuts against the protruding plate, and the connecting member connects the fixing plate and the protruding plate.

本発明の耐力壁パネル接続構造によると、耐力壁パネルの上端又は下端から突出する固定プレートと、構造部材の水平面から突出する突出プレートと、を接続する接続部材の塑性変形によって、耐力壁パネルと構造部材との接合部に集中する水平力を吸収することができ、構造部材の損傷を抑制することができ、地震荷重に対する靱性の高い建築物とすることができる。また、接続部材は、耐力壁パネルの面外方向から固定プレート及び突出プレートに着脱可能に固定されるので、接続部材が塑性変形し交換等のメンテナンスが必要となった場合に、耐力壁パネルや構造部材を建築物から取り外すことなく、接続部材のみを取り外して交換することができ、比較的簡易なメンテナンス作業で耐震性を維持することができる。 According to the load-bearing wall panel connection structure of the present invention, the horizontal force concentrated at the joint between the load-bearing wall panel and the structural member can be absorbed by plastic deformation of the connection member that connects the fixed plate protruding from the upper or lower end of the load-bearing wall panel and the protruding plate protruding from the horizontal surface of the structural member, and damage to the structural member can be suppressed, resulting in a building with high toughness against earthquake loads. In addition, since the connection member is detachably fixed to the fixed plate and the protruding plate from the outside of the surface of the load-bearing wall panel, when the connection member is plastically deformed and maintenance such as replacement is required, only the connection member can be removed and replaced without removing the load-bearing wall panel or the structural member from the building, and earthquake resistance can be maintained with relatively simple maintenance work.

本発明の耐力壁パネル接続構造によると、接続部材は、固定プレート及び突出プレートに当接してボルト及びナットで接合される矩形の接合板と、接合板の周縁に当該接合板に対して垂直な平板状に形成される枠板と、を有するので、接合板のスリップ変形を枠板によって抑制することができ、地震の際の正負の繰返し荷重と層間変位角との関係を示す履歴曲線をバイリニア型とすることで、接続部材のエネルギー吸収能力の低下を防ぐことができる。 According to the load-bearing wall panel connection structure of the present invention, the connection member has a rectangular connection plate that abuts against the fixed plate and the protruding plate and is joined with bolts and nuts, and a frame plate that is formed in a flat shape perpendicular to the connection plate at the periphery of the connection plate. This allows the frame plate to suppress slip deformation of the connection plate, and by making the hysteresis curve showing the relationship between the repeated positive and negative loads during an earthquake and the story displacement angle a bilinear type, it is possible to prevent a decrease in the energy absorption capacity of the connection member.

本発明の耐力壁パネル接続構造によると、上下の耐力壁パネルの間に構造部材としての木製梁が形成され、第一の突出プレートと第二の突出プレートとは、木製梁を上下方向に貫通する貫通連結材によって連結されているので、建築物に加わった水平力が上側の耐力壁パネルの下端隅における鉛直方向の引張力及び圧縮力に変換され、当該引張力及び圧縮力が貫通連結材によって木製梁を介さずに下側の耐力壁パネルに伝達され、木製梁に大きな荷重をかけることがなく、木製梁の損傷を防止できる。 According to the load-bearing wall panel connection structure of the present invention, a wooden beam is formed as a structural member between the upper and lower load-bearing wall panels, and the first protruding plate and the second protruding plate are connected by a through-hole connecting member that penetrates the wooden beam in the vertical direction. Therefore, the horizontal force applied to the building is converted into vertical tension and compression forces at the lower corner of the upper load-bearing wall panel, and the tension and compression forces are transmitted to the lower load-bearing wall panel by the through-hole connecting member without passing through the wooden beam, so that a large load is not applied to the wooden beam and damage to the wooden beam can be prevented.

本発明の耐力壁パネル接続構造によると、貫通連結材が、筒状の受入部と、受入部に挿入される挿入部と、有し、木製梁に形成された水平な水平孔に挿入されるピンが受入部及び挿入部を貫通することで受入部及び挿入部が連結されるものであるので、木製梁の上下一方から貫通連結材の受入部を挿入し、他方から挿入部を挿入して、木製梁の内部でピンによって連結するので、木製梁の上面及び下面に簡単に第一の突出プレート及び第二の突出プレートを固定することができ、上側の耐力壁パネルから下側の耐力壁パネルへ木製梁を介さずに力を伝達することができる。 According to the load-bearing wall panel connection structure of the present invention, the through-hole connecting member has a cylindrical receiving portion and an inserting portion that is inserted into the receiving portion, and the receiving portion and the inserting portion are connected by a pin that is inserted into a horizontal hole formed in the wooden beam and penetrates through the receiving portion and the inserting portion. Therefore, the receiving portion of the through-hole connecting member is inserted from either the top or bottom of the wooden beam, and the inserting portion is inserted from the other side, and the wooden beam is connected by a pin inside the wooden beam. Therefore, the first protruding plate and the second protruding plate can be easily fixed to the top and bottom surfaces of the wooden beam, and force can be transmitted from the upper load-bearing wall panel to the lower load-bearing wall panel without going through the wooden beam.

本発明の耐力壁パネル接続構造によると、水平孔は、ピンの径よりも大きい径に形成されており、ピンとの間に隙間が形成されるので、耐力壁パネルから貫通連結材に伝達される引張力又は圧縮力が木製梁に全く伝達されることがなく、木製梁の損傷を確実に防止できる。 According to the load-bearing wall panel connection structure of the present invention, the horizontal hole is formed with a diameter larger than the diameter of the pin, and a gap is formed between the pin and the horizontal hole, so that the tensile or compressive force transmitted from the load-bearing wall panel to the through-hole connector is not transmitted at all to the wooden beam, and damage to the wooden beam can be reliably prevented.

本発明の耐力壁パネル接続構造によると、固定プレート、突出プレート、及び接続部材は、所定の耐火性能を有する鋼製であり、耐力壁パネルは木製耐力壁パネルであり、耐力壁パネルと、木製梁と、の間に耐火板材が配置されているので、木製の梁と木製の耐力壁パネルでありつつ、耐火上の縁を切ることができる。 According to the load-bearing wall panel connection structure of the present invention, the fixed plate, protruding plate, and connection member are made of steel with a specified fire resistance, the load-bearing wall panel is a wooden load-bearing wall panel, and a fire-resistant plate material is arranged between the load-bearing wall panel and the wooden beam, so that the fire-resistant edge can be cut even though the load-bearing wall panel is a wooden beam and a wooden load-bearing wall panel.

本発明の耐力壁パネル接続構造によると、構造部材は、鉄筋コンクリート製又は鋼製であり、突出プレートは、構造部材に固定されて上方に突出し、固定プレートは、耐力壁パネルの下端から突出して突出プレートに突き合わされて、接続部材が、固定プレート及び突出プレートを接続するので、例えば基礎の上に耐力壁パネルを設置する場合や、下階が鉄筋コンクリート造又は鉄骨造でその上階に耐力壁パネルを設置する場合であっても、靱性が高くメンテナンスが容易な耐力壁パネルの接続構造とすることができる。 According to the load-bearing wall panel connection structure of the present invention, the structural members are made of reinforced concrete or steel, the protruding plate is fixed to the structural member and protrudes upward, the fixed plate protrudes from the lower end of the load-bearing wall panel and abuts against the protruding plate, and the connection member connects the fixed plate and the protruding plate. Therefore, even when the load-bearing wall panel is installed on the foundation, or when the lower floor is made of reinforced concrete or steel and the load-bearing wall panel is installed on the floor above, the connection structure of the load-bearing wall panel can be made to be highly tough and easy to maintain.

第一の耐力壁パネル接続構造及び第二の耐力壁パネル接続構造を用いて耐力壁パネルを固定した状態を説明する正面図。A front view illustrating the state in which a load-bearing wall panel is fixed using a first load-bearing wall panel connection structure and a second load-bearing wall panel connection structure. 第一の耐力壁パネル接続構造及び第二の耐力壁パネル接続構造を用いて耐力壁パネルを固定した状態を説明する鉛直断面図。A vertical cross-sectional view illustrating the state in which a load-bearing wall panel is fixed using a first load-bearing wall panel connection structure and a second load-bearing wall panel connection structure. 第一、第二、第三の固定プレートの形状を説明する斜視図。FIG. 4 is a perspective view illustrating the shapes of first, second, and third fixing plates. 第一の耐力パネル接続構造の全体構成を説明する一部省略斜視図。FIG. 2 is a partially omitted perspective view illustrating the overall configuration of a first load-bearing panel connection structure. 第一の耐力パネル接続構造の全体構成を説明する図２のα部分拡大断面図。FIG. 3 is an enlarged cross-sectional view of the portion α in FIG. 2 for explaining the overall configuration of the first load-bearing panel connection structure. 第一の突出プレート、上面当接板、挿入部、受入部、下面当接板、及び第二の突出プレートの構成を説明する斜視図。11 is a perspective view for explaining the configuration of a first protruding plate, an upper contact plate, an insertion portion, a receiving portion, a lower contact plate, and a second protruding plate. FIG. 第一、第二、第三接続部材の形状を説明する斜視図。FIG. 4 is a perspective view illustrating the shapes of first, second, and third connecting members. 第一の耐力壁パネル接続構造における第一及び第二接続部材の取り付け及び取り外しを説明するために木製梁及び耐力壁パネルの記載を省略した分解斜視図。An exploded oblique view in which the wooden beams and load-bearing wall panels are omitted to illustrate the installation and removal of the first and second connection members in the first load-bearing wall panel connection structure. 図８の状態から第一及び第二接続部材の取り付けた状態を説明する斜視図。FIG. 9 is a perspective view illustrating a state in which the first and second connecting members are attached from the state shown in FIG. 8 . 耐火板材の配置を説明する一部省略拡大断面図。FIG. 4 is an enlarged cross-sectional view illustrating the arrangement of fire-resistant boards. 第二の耐力壁パネル接続構造の全体構成を説明する一部省略斜視図。FIG. 2 is a partially omitted oblique view illustrating the overall configuration of the second load-bearing wall panel connection structure. 第二の耐力パネル接続構造の全体構成を説明する図２のβ部分拡大断面図。3 is an enlarged cross-sectional view of the β portion of FIG. 2 for explaining the overall configuration of the second load-bearing panel connection structure. 第二の耐力壁パネル接続構造における第三接続部材の取り付け及び取り外しを説明するために耐力壁パネルの記載を省略した分解斜視図。An exploded oblique view in which the load-bearing wall panel is omitted to explain the installation and removal of the third connection member in the second load-bearing wall panel connection structure.

以下、本発明の耐力壁パネル接続構造の実施形態について、各図を参照しつつ説明する。本実施形態において、耐力壁パネル接続構造１ａ，１ｂを用いて耐力壁を形成する建築物は、木製梁２及び木製柱で躯体が形成される木造の戸建住宅である。なお、本発明における建築物は、本実施形態に限定されるものではなく、集合住宅や非居住性の各種施設などの建築物であってもよい。また、本発明は木製梁２が設けられる建築物において好適に用いられるものであるが、木造の建築物に限定されるものではなく、鉄骨造、鉄筋コンクリート造、鉄骨鉄筋コンクリート造、その他の様々な構造の建築物に用いることができる。 The following describes an embodiment of the load-bearing wall panel connection structure of the present invention with reference to the drawings. In this embodiment, the building in which the load-bearing wall is formed using the load-bearing wall panel connection structures 1a and 1b is a wooden detached house whose framework is formed of wooden beams 2 and wooden columns. Note that the building in the present invention is not limited to this embodiment, and may be an apartment building or various non-residential facilities. In addition, the present invention is preferably used in buildings in which wooden beams 2 are provided, but is not limited to wooden buildings, and can be used in buildings of various other structures, such as steel frame construction, reinforced concrete construction, and steel-reinforced concrete construction.

本実施形態の耐力壁パネル接続構造１ａ，１ｂは、図１及び図２に示すように、木製梁２を挟んで上下の耐力壁パネル３を接続する第一の耐力壁パネル接続構造１ａと、基礎４の上に耐力壁パネル３を接続する第二の耐力壁パネル接続構造１ｂと、を含んでいる。以下において、まず、第一の耐力壁パネル接続構造１ａについて説明する。第一の耐力壁パネル接続構造１ａは、上下の耐力壁パネル３と、当該上下の耐力壁パネル３に挟まれる構造部材としての木製梁２と、上側の耐力壁パネル３の下端から下方に突出して形成される第一の固定プレート５と、木製梁２の上面から上方に突出する第一の突出プレート６と、第一の固定プレート５と第一の突出プレート６とを接続する第一接続部材７と、下側の耐力壁パネル３の上端から上方に突出して形成される第二の固定プレート８と、木製梁２の下面から下方に突出する第二の突出プレート９と、第二の固定プレート８と第二の突出プレート９とを接続する第二接続部材１０と、第一の突出プレート６と第二の突出プレート９とを連結する貫通連結材１１と、を備える。なお、本実施形態における第一の固定プレート５及び第二の固定プレート８は、本発明における「固定プレート」に相当する。また、本実施形態における第一の突出プレート６及び第二の突出プレート９は、本発明における「突出プレート」に相当する。本実施形態における第一接続部材７及び第二接続部材１０は、本発明における「接続部材」に相当する。 As shown in Figures 1 and 2, the load-bearing wall panel connection structures 1a and 1b of this embodiment include a first load-bearing wall panel connection structure 1a that connects upper and lower load-bearing wall panels 3 across a wooden beam 2, and a second load-bearing wall panel connection structure 1b that connects the load-bearing wall panel 3 onto a foundation 4. In the following, the first load-bearing wall panel connection structure 1a will first be described. The first load-bearing wall panel connection structure 1a includes upper and lower load-bearing wall panels 3, a wooden beam 2 as a structural member sandwiched between the upper and lower load-bearing wall panels 3, a first fixing plate 5 formed by protruding downward from the lower end of the upper load-bearing wall panel 3, a first protruding plate 6 protruding upward from the upper surface of the wooden beam 2, a first connecting member 7 connecting the first fixing plate 5 and the first protruding plate 6, a second fixing plate 8 formed by protruding upward from the upper end of the lower load-bearing wall panel 3, a second protruding plate 9 protruding downward from the lower surface of the wooden beam 2, a second connecting member 10 connecting the second fixing plate 8 and the second protruding plate 9, and a through-hole connecting member 11 connecting the first protruding plate 6 and the second protruding plate 9. The first fixing plate 5 and the second fixing plate 8 in this embodiment correspond to the "fixing plate" in the present invention. The first protruding plate 6 and the second protruding plate 9 in this embodiment correspond to the "protruding plate" in the present invention. The first connecting member 7 and the second connecting member 10 in this embodiment correspond to the "connecting member" in the present invention.

耐力壁パネル３は直交集成板（ＣＬＴ）であり、上端及び下端にそれぞれ固定プレートを挿入可能なスリット１２が形成されている。耐力壁パネル３は建築物の屋内外を隔てる外壁の内部に配置されるものであってもよく、界壁や間仕切壁のように、建築物の屋内に立設される壁の内部に配置されるものであってもよい。なお、耐力壁パネル３は直交集成板に限定されるものではなく、例えばＮＬＴ（Nail Laminated Timber）などの耐力壁パネルとして使用可能なせん断剛性の高い木質材料をもちいてもよい。また、木製梁２は集成材の角材であり、本実施形態においては１階の天井懐において図示しない柱材の間に架設されている。木製梁２は、上面から下面に鉛直な円形孔１３が貫通している。円形孔１３は耐力壁パネル３が設置される位置に４つ形成されている。また、木製梁２には一方の側面から他方の側面に向かって水平孔１４が形成されている。水平孔１４は鉛直に形成された円形孔１３に直交するように設けられており、１つの円形孔１３につき３つの水平孔１４が上下方向に並べて形成されている。 The load-bearing wall panel 3 is a cross-laminated timber (CLT) panel, and has slits 12 at the top and bottom, into which a fixing plate can be inserted. The load-bearing wall panel 3 may be disposed inside an exterior wall that separates the interior and exterior of a building, or may be disposed inside a wall erected inside a building, such as a boundary wall or a partition wall. The load-bearing wall panel 3 is not limited to cross-laminated timber, and may be made of a wood material with high shear rigidity that can be used as a load-bearing wall panel, such as nail laminated timber (NLT). The wooden beam 2 is a square timber made of laminated timber, and in this embodiment, it is installed between columns (not shown) in the ceiling of the first floor. The wooden beam 2 has vertical circular holes 13 penetrating it from the top to the bottom. Four circular holes 13 are formed at the position where the load-bearing wall panel 3 is installed. The wooden beam 2 also has horizontal holes 14 formed from one side to the other side. The horizontal holes 14 are arranged perpendicular to the vertically formed circular holes 13, and three horizontal holes 14 are formed in a vertical line for each circular hole 13.

第一の固定プレート５及び第二の固定プレート８は、図３に示すように、Ｌ字状に形成された鋼製の薄板材であり、耐力壁パネル３に固定するための多数のピン孔１５と、耐力壁パネル３から突出する端部に形成され、３つのボルト挿入孔１６とを有する。第一の固定プレート５の下端縁及び第二の固定プレート８の上端縁はそれぞれ水平な直線状に形成されている。 As shown in FIG. 3, the first fixing plate 5 and the second fixing plate 8 are thin steel plates formed in an L-shape, and have multiple pin holes 15 for fixing to the bearing wall panel 3, and three bolt insertion holes 16 formed at the ends protruding from the bearing wall panel 3. The lower edge of the first fixing plate 5 and the upper edge of the second fixing plate 8 are each formed in a horizontal straight line.

図４及び図５に示すように、第一の固定プレート５は、上階の耐力壁パネル３の下端に固定されるプレートである。第一の固定プレート５は耐力壁パネル３の下端の両隅にそれぞれ固定される。図５に示すように、第一の固定プレート５は耐力壁パネル３の下端に形成されたスリット１２に挿入されている。第一の固定プレート５は、耐力壁パネル３を面外方向に貫通するドリフトピンと、ボルト及びナットと、からなる固定具１７によって、耐力壁パネル３の下端から下向きに一部が突出した状態に固定される。 As shown in Figures 4 and 5, the first fixing plate 5 is a plate that is fixed to the lower end of the upper floor load-bearing wall panel 3. The first fixing plate 5 is fixed to each of the two corners of the lower end of the load-bearing wall panel 3. As shown in Figure 5, the first fixing plate 5 is inserted into a slit 12 formed in the lower end of the load-bearing wall panel 3. The first fixing plate 5 is fixed in a state in which a part of it protrudes downward from the lower end of the load-bearing wall panel 3 by a fastener 17 consisting of a drift pin that penetrates the load-bearing wall panel 3 in the out-of-plane direction, a bolt, and a nut.

第一の突出プレート６は、図６に示すように、木製梁２の上面に当接する上面当接板１９の上に鉛直方向に延びて形成されている。第一の突出プレート６は、３つのボルト受け孔１８が形成されている。上面当接板１９は、第一の固定プレート５の下方にそれぞれ形成されており、第一の突出プレート６は第一の固定プレート５と突き合わされる位置において上面当接板１９からそれぞれ突出している。第一の突出プレート６の上端縁は水平な直線状に形成されており、第一の固定プレート５の下端縁に突き合わせられる。上面当接板１９は、水平な平板状であり、木製梁２の上面に当接して配置される。上面当接板１９の下面には、貫通連結材１１の挿入部２０が下方に突出するように形成されている。貫通連結材１１は、挿入部２０と受入部２１とを有して円柱形状に形成されており、筒状の受入部２１に挿入部２０が挿入されて連結されるものである。挿入部２０は上面当接板１９の下面から２つ並んで突出している。第一の突出プレート６、上面当接板１９、及び挿入部２０は、互いに一体に形成されている。 As shown in FIG. 6, the first protruding plate 6 is formed extending vertically on the upper surface abutment plate 19 that abuts the upper surface of the wooden beam 2. The first protruding plate 6 has three bolt receiving holes 18 formed therein. The upper surface abutment plate 19 is formed below the first fixed plate 5, and the first protruding plate 6 protrudes from the upper surface abutment plate 19 at a position where it abuts the first fixed plate 5. The upper edge of the first protruding plate 6 is formed in a horizontal straight line and abuts against the lower edge of the first fixed plate 5. The upper surface abutment plate 19 is a horizontal flat plate and is placed in abutment against the upper surface of the wooden beam 2. The lower surface of the upper surface abutment plate 19 is formed so that the insertion portion 20 of the through-hole connecting material 11 protrudes downward. The through-hole connecting material 11 is formed in a cylindrical shape having an insertion portion 20 and a receiving portion 21, and the insertion portion 20 is inserted into the cylindrical receiving portion 21 to be connected. Two insertion portions 20 protrude side by side from the lower surface of the upper surface abutment plate 19. The first protruding plate 6, the upper surface abutment plate 19, and the insertion portions 20 are integrally formed with each other.

挿入部２０は、上部が大径の円柱状で下部が上部よりも縮径された円柱状に形成されている。挿入部２０の下部には、上下方向に並べて３つの連結孔２２が形成されている。受入部２１は、挿入部２０の下部が挿入可能な円筒形状に形成されており、挿入部２０に形成された３つの連結孔２２に整合する位置にそれぞれ固定孔２３が貫通して形成されている。受入部２１は、下面当接板２４の上面から２つ並んで突出して形成されている。図４に示すように、木製梁２の円形孔１３に上側から挿入部２０を挿入し、下側から受入部２１を挿入して、木製梁２の内部で挿入部２０を受入部２１に挿入し、木製梁２の側面に形成された水平孔１４からピン２５を挿入して、受入部２１の固定孔２３及び挿入部２０の連結孔２２をピン２５で連結する。ピン２５は直径約１６ｍｍの鋼製円柱形であり、挿入部２０の連結孔２２及び受入部２１の固定孔２３の直径も約１６ｍｍに形成されている。そして木製梁２に形成される水平孔１４の直径約３０ｍｍに形成されており、ピン２５の外周と水平孔１４の内周との間には隙間が形成されている。木製梁２の水平孔１４が、ピン２５の径よりも大きい径であることで、ピン２５との間に隙間が形成されるので、耐力壁パネル３から貫通連結材１１に伝達される引張力又は圧縮力が木製梁２に全く伝達されることがなく、木製梁２の損傷を確実に防止できる。 The insertion section 20 is formed in a cylindrical shape with a large diameter at the top and a smaller diameter at the bottom. Three connecting holes 22 are formed in the vertical direction at the bottom of the insertion section 20. The receiving section 21 is formed in a cylindrical shape into which the bottom of the insertion section 20 can be inserted, and fixing holes 23 are formed at positions that match the three connecting holes 22 formed in the insertion section 20. Two receiving sections 21 are formed protruding side by side from the upper surface of the lower surface abutment plate 24. As shown in FIG. 4, the insertion section 20 is inserted from the top into the circular hole 13 of the wooden beam 2, the receiving section 21 is inserted from the bottom, the insertion section 20 is inserted into the receiving section 21 inside the wooden beam 2, and a pin 25 is inserted from the horizontal hole 14 formed on the side of the wooden beam 2 to connect the fixing hole 23 of the receiving section 21 and the connecting hole 22 of the insertion section 20 with the pin 25. The pin 25 is a steel cylinder with a diameter of about 16 mm, and the diameter of the connecting hole 22 of the insertion part 20 and the fixing hole 23 of the receiving part 21 are also formed to be about 16 mm. The horizontal hole 14 formed in the wooden beam 2 is formed to be about 30 mm in diameter, and a gap is formed between the outer circumference of the pin 25 and the inner circumference of the horizontal hole 14. Since the horizontal hole 14 of the wooden beam 2 has a diameter larger than the diameter of the pin 25, a gap is formed between the pin 25 and the horizontal hole 14. Therefore, the tensile force or compressive force transmitted from the load-bearing wall panel 3 to the through-connecting material 11 is not transmitted at all to the wooden beam 2, and damage to the wooden beam 2 can be reliably prevented.

下面当接板２４は、水平な平板状であり、木製梁２の下面に当接して配置される。下面当接板２４の下面には、第二の突出プレート９が、図４及び図６に示すように可能に延びて形成されている。第二の突出プレート９は、３つのボルト受け孔１８が形成されている。第二の突出プレート９の下端縁は水平な直線状に形成されており、第二の固定プレート８の上端縁に突き合わせられる。 The lower abutment plate 24 is a horizontal flat plate and is placed in abutment against the lower surface of the wooden beam 2. On the lower surface of the lower abutment plate 24, a second protruding plate 9 is formed so as to extend as far as possible, as shown in Figs. 4 and 6. The second protruding plate 9 has three bolt receiving holes 18 formed therein. The lower edge of the second protruding plate 9 is formed in a horizontal straight line and is butted against the upper edge of the second fixing plate 8.

また、第二の固定プレート８は、下階の耐力壁パネル３の上端に固定されるプレートである。図５に示すように、第二の固定プレート８は耐力壁パネル３の上端に形成されたスリット１２に挿入されいる。第二の固定プレート８は、耐力壁パネル３を面外方向に貫通するドリフトピンと、ボルト及びナットと、からなる固定具１７によって、耐力壁パネル３の上端から上向きに一部が突出した状態に固定される。 The second fixing plate 8 is fixed to the upper end of the lower floor load-bearing wall panel 3. As shown in FIG. 5, the second fixing plate 8 is inserted into a slit 12 formed in the upper end of the load-bearing wall panel 3. The second fixing plate 8 is fixed in a state in which a part of it protrudes upward from the upper end of the load-bearing wall panel 3 by a fastener 17 consisting of a drift pin that penetrates the load-bearing wall panel 3 in the out-of-plane direction, a bolt, and a nut.

第一接続部材７及び第二接続部材１０は、図７に示すように、固定プレート５，８及び突出プレート６，９に当接して、それぞれのプレートに高力ボルト２６及びナットで接合される矩形の接合板２７と、接合板２７の周縁に、接合板２７に対して垂直な平板状に形成される枠板２８と、を有しており、耐力壁パネル３の面外方向に向かって開いたボックス形状に形成されている。第一接続部材７は、図８に示すように、接合板２７に６つの接合孔２９が形成されている。接合孔２９は、上下２列で水平方向に３つずつ並んで形成されており、上側の３つの接合孔２９が第一の固定プレート５のボルト挿入孔１６と整合し、下側の３つの接合孔２９が第一の突出プレート６のボルト受け孔１８に整合している。第一接続部材７は、図９に示すように、第一の固定プレート５及び第一の突出プレート６の表面及び裏面にそれぞれ接合板２７が当接し、上側の接合孔２９及びボルト挿入孔１６にそれぞれ高力ボルト２６を挿入してナットで締め付けるとともに、下側の接合孔２９及びボルト受け孔１８にそれぞれ高力ボルト２６を挿入してナットで締め付けることで第一の固定プレート５及び第一の突出プレート６を接合している。 As shown in Fig. 7, the first connection member 7 and the second connection member 10 have a rectangular joint plate 27 that abuts against the fixed plates 5, 8 and the protruding plates 6, 9 and is joined to each plate with high-strength bolts 26 and nuts, and a frame plate 28 formed in a flat plate shape perpendicular to the joint plate 27 on the periphery of the joint plate 27, and are formed in a box shape that opens toward the outside of the surface of the load-bearing wall panel 3. As shown in Fig. 8, the first connection member 7 has six joint holes 29 formed in the joint plate 27. The joint holes 29 are formed in two rows, one above the other, three by three in the horizontal direction, and the upper three joint holes 29 are aligned with the bolt insertion holes 16 of the first fixed plate 5, and the lower three joint holes 29 are aligned with the bolt receiving holes 18 of the first protruding plate 6. As shown in FIG. 9, the first connection member 7 is configured such that the joining plates 27 abut against the front and back surfaces of the first fixed plate 5 and the first protruding plate 6, respectively, and high-strength bolts 26 are inserted into the upper joining holes 29 and the bolt insertion holes 16, respectively, and fastened with nuts, while the high-strength bolts 26 are inserted into the lower joining holes 29 and the bolt receiving holes 18, respectively, and fastened with nuts to join the first fixed plate 5 and the first protruding plate 6.

また第二接続部材１０は、第一接続部材７と同様の６つの接合孔２９が接合板２７に形成されておいる。第二接続部材１０は、図９に示すように、第二の固定プレート８及び第二の突出プレート９の表面及び裏面にそれぞれ接合板２７が当接し、上側の接合孔２９及びボルト受け孔１８にそれぞれ高力ボルト２６を挿入してナットで締め付けるとともに、下側の接合孔２９及びボルト挿入孔１６にそれぞれ高力ボルト２６を挿入してナットで締め付けることで第二の固定プレート８及び第二の突出プレート９を接合している。 The second connection member 10 has six joining holes 29 formed in the joining plate 27, similar to the first connection member 7. As shown in FIG. 9, the second connection member 10 has the joining plate 27 abutting the front and back surfaces of the second fixing plate 8 and the second protruding plate 9, respectively, and joins the second fixing plate 8 and the second protruding plate 9 by inserting high-strength bolts 26 into the upper joining holes 29 and bolt receiving holes 18, respectively, and tightening them with nuts, and by inserting high-strength bolts 26 into the lower joining holes 29 and bolt insertion holes 16, respectively, and tightening them with nuts.

建築物に加わった水平力が上側の耐力壁パネル３の下端隅における鉛直方向の引張力及び圧縮力に変換されるが、上述のように、第一の突出プレート６及び第二の突出プレート９が、木製梁２を上下方向に貫通する貫通連結材１１によって連結されていることで、当該引張力及び圧縮力が貫通連結材１１によって木製梁２を介することなく、下側の耐力壁パネル３に伝達されるので、木製梁２に大きな荷重をかけることがなく、木製梁２の損傷を防止できる。 The horizontal force applied to the building is converted into vertical tension and compression forces at the lower corners of the upper load-bearing wall panel 3. However, as described above, the first protruding plate 6 and the second protruding plate 9 are connected by a through-hole connecting member 11 that penetrates the wooden beam 2 in the vertical direction. This means that the tension and compression forces are transmitted by the through-hole connecting member 11 to the lower load-bearing wall panel 3 without passing through the wooden beam 2. This prevents a large load from being placed on the wooden beam 2, and prevents damage to the wooden beam 2.

第一接続部材７及び第二接続部材１０は、鋼製で耐力壁パネル３よりも剛性が低く形成されており、耐力壁パネル３から伝達される水平力を塑性変形することで吸収可能に形成されている。そして、第一接続部材７及び第二接続部材１０は、矩形の接合板２７と、接合板２７の周縁に形成される枠板２８と、を有することで、接合板２７のスリップ変形が枠板２８によって抑制され、地震の際の正負の繰返し荷重と層間変位角との関係を示す履歴曲線をバイリニア型とすることができ、第一接続部材７及び第二接続部材１０のエネルギー吸収能力の低下を防ぐことができる。 The first connecting member 7 and the second connecting member 10 are made of steel and are formed to have a lower rigidity than the load-bearing wall panel 3, and are formed to be able to absorb the horizontal force transmitted from the load-bearing wall panel 3 by plastic deformation. The first connecting member 7 and the second connecting member 10 have a rectangular joint plate 27 and a frame plate 28 formed on the periphery of the joint plate 27, so that the slip deformation of the joint plate 27 is suppressed by the frame plate 28, and the hysteresis curve showing the relationship between the repeated positive and negative loads during an earthquake and the story displacement angle can be made bilinear, preventing a decrease in the energy absorption capacity of the first connecting member 7 and the second connecting member 10.

また、第一接続部材７及び第二接続部材１０は、高力ボルト２６及びナットを取り外して、耐力壁パネル３の面外方向に引き出すことで、木製梁２や耐力壁パネル３に干渉することなく構造躯体から取り外すことができる。したがって、第一接続部材７及び第二接続部材１０が地震等によって塑性変形し交換等のメンテナンスが必要となった場合であっても、耐力壁パネル３や構造部材を建築物から取り外すことなく、接続部材のみを取り外して交換することができ、比較的簡易なメンテナンス作業で耐震性を維持することができる。 The first and second connecting members 7 and 10 can be removed from the structural frame without interfering with the wooden beams 2 and the bearing wall panels 3 by removing the high-strength bolts 26 and nuts and pulling them outward from the plane of the bearing wall panels 3. Therefore, even if the first and second connecting members 7 and 10 are plastically deformed due to an earthquake or other cause and require maintenance such as replacement, it is possible to remove and replace only the connecting members without removing the bearing wall panels 3 or structural members from the building, and earthquake resistance can be maintained with relatively simple maintenance work.

第一の固定プレート５、第二の固定プレート８、第一の突出プレート６、第二の突出プレート９、第一接続部材７、及び第二接続部材１０は、木製梁２及び耐力壁パネル３よりも耐火性能の高い鋼製に形成されている。ここで本発明における「所定の耐火性能」は、本実施形態においては法令の要件を満たす耐火性能をいい、例えば１時間の延焼抑制性能をいう。上階の耐力壁パネル３と木製梁２との間には第一接続部材７が配置され、下階の耐力壁パネル３と木製梁２との間には第二接続部材１０が配置されて、それぞれ耐力壁パネル３と木製梁２との間に隙間が形成されている。そして、図１０に示すように、上階の耐力壁パネル３と木製梁２との間には第一接続部材７が配置されている位置を切り欠いて耐火板材３０の床材が形成されており、下階の耐力壁パネル３と木製梁２との間には第二接続部材１０が配置されている位置を切り欠いて耐火板材３０の天井材が形成されている。そしてこれらの耐火板材３０と第一接続部材７及び第二接続部材１０との間にはそれぞれ耐火被覆材３１が配置されている。このように木製梁２と木製の耐力壁パネル３とが直接的に接続されずに、耐火板材３０が配置されることで、木製梁２と木製耐力壁パネル３を用いた構造でありつつ、耐火上の縁切りを行うことができ、上下階の間に耐火ラインを設けることができる。 The first fixing plate 5, the second fixing plate 8, the first protruding plate 6, the second protruding plate 9, the first connecting member 7, and the second connecting member 10 are made of steel having a higher fire resistance than the wooden beam 2 and the load-bearing wall panel 3. Here, the "predetermined fire resistance" in the present invention means a fire resistance that meets the requirements of the law in this embodiment, for example, a fire spread suppression performance for one hour. The first connecting member 7 is arranged between the load-bearing wall panel 3 of the upper floor and the wooden beam 2, and the second connecting member 10 is arranged between the load-bearing wall panel 3 of the lower floor and the wooden beam 2, and a gap is formed between the load-bearing wall panel 3 and the wooden beam 2, respectively. Then, as shown in FIG. 10, the position where the first connecting member 7 is arranged is cut out between the load-bearing wall panel 3 of the upper floor and the wooden beam 2 to form a floor material of fire-resistant plate material 30, and the position where the second connecting member 10 is arranged is cut out between the load-bearing wall panel 3 of the upper floor and the wooden beam 2 to form a ceiling material of fire-resistant plate material 30. And between these fireproof plates 30 and the first connecting member 7 and the second connecting member 10, fireproof covering material 31 is arranged. In this way, the wooden beams 2 and the wooden load-bearing wall panels 3 are not directly connected, and the fireproof plates 30 are arranged, so that the structure uses the wooden beams 2 and the wooden load-bearing wall panels 3, but fireproof edges can be cut off, and a fireproof line can be provided between the upper and lower floors.

次に、基礎４の上に耐力壁パネル３を接続する第二の耐力壁パネル接続構造１ｂについて説明する。第二の耐力壁パネル接続構造１ｂは、下階の耐力壁パネル３と、耐力壁パネル３の下端から下方に突出して形成される第三の固定プレート３２と、構造部材としての基礎４の上に配置されるパネル固定金物３３と、パネル固定金物３３から上方に突出する第三の突出プレート３４と、第三の固定プレート３２と第三の突出プレート３４とを接続する第三接続部材３５と、を備える。 Next, a second load-bearing wall panel connection structure 1b that connects a load-bearing wall panel 3 onto a foundation 4 will be described. The second load-bearing wall panel connection structure 1b includes a load-bearing wall panel 3 of the lower floor, a third fixing plate 32 formed by protruding downward from the lower end of the load-bearing wall panel 3, a panel fixing hardware 33 that is placed on the foundation 4 as a structural member, a third protruding plate 34 that protrudes upward from the panel fixing hardware 33, and a third connecting member 35 that connects the third fixing plate 32 and the third protruding plate 34.

なお、第三の固定プレート３２は、上述した第一の耐力壁パネル接続構造１ａにおける第一の固定プレート５及び第二の固定プレート８と同様の構成であり、第三接続部材３５は、上述した第一の耐力壁パネル接続構造１ａにおける第一接続部材７及び第二接続部材１０と同様の構成であるので、詳細な説明は省略する。また、耐力壁パネル３は、上述した第一の耐力壁パネル接続構造１ａと同じ構成であるので詳細な説明は省略する。なお、本実施形態における第三の固定プレート３２は、本発明における「固定プレート」に相当する。また、本実施形態における第三の突出プレート３４は、本発明における「突出プレート」に相当する。本実施形態における第三接続部材３５は、本発明における「接続部材」に相当する。 The third fixing plate 32 has the same configuration as the first fixing plate 5 and the second fixing plate 8 in the first load-bearing wall panel connection structure 1a described above, and the third connecting member 35 has the same configuration as the first connecting member 7 and the second connecting member 10 in the first load-bearing wall panel connection structure 1a described above, so detailed explanations are omitted. The load-bearing wall panel 3 has the same configuration as the first load-bearing wall panel connection structure 1a described above, so detailed explanations are omitted. The third fixing plate 32 in this embodiment corresponds to the "fixing plate" in the present invention. The third protruding plate 34 in this embodiment corresponds to the "protruding plate" in the present invention. The third connecting member 35 in this embodiment corresponds to the "connecting member" in the present invention.

耐力壁パネル３の下端に形成されるスリット１２に第三の固定プレート３２が挿入されて固定される。第三の固定プレート３２は、図３に示すように、Ｌ字状に形成された鋼製の薄板材であり、耐力壁パネル３に固定するための多数のピン孔１５と、耐力壁パネル３から突出する端部に形成され、３つのボルト挿入孔１６とを有する。第三の固定プレート３２の下端縁は水平な直線状に形成されている。 The third fixing plate 32 is inserted and fixed into the slit 12 formed at the lower end of the bearing wall panel 3. As shown in FIG. 3, the third fixing plate 32 is a thin steel plate formed in an L-shape, and has multiple pin holes 15 for fixing to the bearing wall panel 3, and three bolt insertion holes 16 formed at the end protruding from the bearing wall panel 3. The lower edge of the third fixing plate 32 is formed in a horizontal straight line.

図１１及び図１２に示すように、第三の固定プレート３２は、下階の耐力壁パネル３の下端に固定されるプレートである。第三の固定プレート３２は耐力壁パネル３の下端の両隅にそれぞれ固定される。図１２に示すように、第三の固定プレート３２は耐力壁パネル３の下端に形成されたスリット１２に挿入されている。第三の固定プレート３２は、耐力壁パネル３を面外方向に貫通するドリフトピンと、ボルト及びナットと、からなる固定具１７によって、耐力壁パネル３の下端から下向きに一部が突出した状態に固定される。 As shown in Figures 11 and 12, the third fixing plate 32 is a plate that is fixed to the lower end of the load-bearing wall panel 3 of the lower floor. The third fixing plate 32 is fixed to each of the two corners of the lower end of the load-bearing wall panel 3. As shown in Figure 12, the third fixing plate 32 is inserted into a slit 12 formed in the lower end of the load-bearing wall panel 3. The third fixing plate 32 is fixed in a state in which a part of it protrudes downward from the lower end of the load-bearing wall panel 3 by a fastener 17 consisting of a drift pin that penetrates the load-bearing wall panel 3 in the out-of-plane direction, a bolt, and a nut.

第三の突出プレート３４は、図１３に示すように、基礎４の上に固定されるパネル固定金物３３の上面から上方向に延びて形成されている。第三の突出プレート３４には３つのボルト受け孔１８が形成されている。パネル固定金物３３は、基礎４に埋設されて固定されている図示しないアンカーボルトによって基礎４の上面に固定されている。第三の突出プレート３４の上端縁は水平な直線状に形成されており、第三の固定プレート３２の下端縁に突き合わせられる。 As shown in FIG. 13, the third protruding plate 34 is formed by extending upward from the upper surface of the panel fixing hardware 33 that is fixed onto the foundation 4. Three bolt receiving holes 18 are formed in the third protruding plate 34. The panel fixing hardware 33 is fixed to the upper surface of the foundation 4 by anchor bolts (not shown) that are embedded and fixed in the foundation 4. The upper edge of the third protruding plate 34 is formed in a horizontal straight line and is abutted against the lower edge of the third fixing plate 32.

第三接続部材３５は、図１３に示すように、第三の固定プレート３２及び第三の突出プレート３４に当接して、それぞれのプレートに高力ボルト２６及びナットで接合される矩形の接合板２７と、接合板２７の周縁に、接合板２７に対して垂直な平板状に形成される枠板２８と、を有しており、耐力壁パネル３の面外方向に向かって開いたボックス形状に形成されている。第三接続部材３５は、図１３に示すように、第三の固定プレート３２及び第三の突出プレート３４の表面及び裏面にそれぞれ接合板２７が当接し、上側の接合孔２９及びボルト挿入孔１６にそれぞれ高力ボルト２６を挿入してナットで締め付けるとともに、下側の接合孔２９及びボルト受け孔１８にそれぞれ高力ボルト２６を挿入してナットで締め付けることで第三の固定プレート３２及び第三の突出プレート３４を接合している。 As shown in FIG. 13, the third connection member 35 has a rectangular joint plate 27 that abuts against the third fixing plate 32 and the third protruding plate 34 and is joined to each plate with a high-strength bolt 26 and a nut, and a frame plate 28 that is formed in a flat plate shape perpendicular to the joint plate 27 on the periphery of the joint plate 27, and is formed in a box shape that opens toward the outside of the surface of the load-bearing wall panel 3. As shown in FIG. 13, the third connection member 35 has the joint plate 27 abutting the front and back surfaces of the third fixing plate 32 and the third protruding plate 34, respectively, and the high-strength bolts 26 are inserted into the upper joint holes 29 and the bolt insertion holes 16, respectively, and fastened with nuts, and the high-strength bolts 26 are inserted into the lower joint holes 29 and the bolt receiving holes 18, respectively, and fastened with nuts, thereby joining the third fixing plate 32 and the third protruding plate 34.

第三接続部材３５は、鋼製で耐力壁パネル３よりも剛性が低く形成されており、耐力壁パネル３から伝達される水平力を塑性変形することで吸収可能に形成されている。このように本実施形態の第二の耐力壁パネル接続構造１ｂは、第三接続部材３５の塑性変形によって、耐力壁パネル３と基礎４との接合部に集中する水平力を吸収することができ、耐力壁パネル３や基礎４の損傷を抑制することで、地震荷重に対する靱性の高い建築物を形成することができる。そして、第三接続部材３５の形状が、矩形の接合板２７の周縁に枠板２８を設けた鋼製のボックス形状のであることで、接合板２７のスリップ変形を枠板２８によって抑制して、地震の際の正負の繰返し荷重と層間変位角との関係を示す履歴曲線をバイリニア型とすることができ、第三接続部材３５のエネルギー吸収能力の低下を防ぐことができる。 The third connection member 35 is made of steel and has a lower rigidity than the load-bearing wall panel 3, and is formed so that it can absorb the horizontal force transmitted from the load-bearing wall panel 3 by plastic deformation. In this way, the second load-bearing wall panel connection structure 1b of this embodiment can absorb the horizontal force concentrated at the joint between the load-bearing wall panel 3 and the foundation 4 by the plastic deformation of the third connection member 35, and by suppressing damage to the load-bearing wall panel 3 and the foundation 4, a building with high toughness against earthquake loads can be formed. And, since the shape of the third connection member 35 is a steel box shape with a frame plate 28 provided on the periphery of the rectangular joint plate 27, the slip deformation of the joint plate 27 is suppressed by the frame plate 28, and the hysteresis curve showing the relationship between the positive and negative repeated loads and the story displacement angle during an earthquake can be made bilinear, and a decrease in the energy absorption capacity of the third connection member 35 can be prevented.

また、第三接続部材３５は、高力ボルト２６及びナットを取り外して、耐力壁パネル３の面外方向に引き出すことで、耐力壁パネル３や基礎４等に干渉することなく構造躯体から取り外すことができる。したがって、第三接続部材３５が塑性変形し、交換等のメンテナンスが必要となった場合に、耐力壁パネル３を建築物から取り外すことなく、第三接続部材３５のみを取り外して交換することができ、比較的簡易なメンテナンス作業で耐震性を維持することができる。 Furthermore, the third connecting member 35 can be removed from the structural body without interfering with the load-bearing wall panel 3 or the foundation 4 by removing the high-strength bolt 26 and nut and pulling it outward from the plane of the load-bearing wall panel 3. Therefore, if the third connecting member 35 undergoes plastic deformation and requires maintenance such as replacement, only the third connecting member 35 can be removed and replaced without removing the load-bearing wall panel 3 from the building, and earthquake resistance can be maintained with relatively simple maintenance work.

なお、第二の耐力壁パネル接続構造１ｂは、基礎４の上に耐力壁パネル３を接続するものであるが、耐力壁パネル３の下端を接続する構造部材としては、例えば、鉄筋コンクリート製又は鋼製で、地震の際に耐力壁パネル３の下端との接合箇所に集中するせん断力を負担可能な剛性を有する構造部材であれば基礎４に限定されるものではなく、例えば下階が鉄筋コンクリート造又は鉄骨造でその上階に耐力壁パネル３を設置する場合であっても、靱性が高くメンテナンスが容易な耐力壁パネル接続構造１ａ，１ｂとすることができる。 The second load-bearing wall panel connection structure 1b connects the load-bearing wall panel 3 onto the foundation 4, but the structural member connecting the lower end of the load-bearing wall panel 3 is not limited to the foundation 4, and can be, for example, made of reinforced concrete or steel, and has the rigidity to withstand the shear force concentrated at the joint with the lower end of the load-bearing wall panel 3 during an earthquake. For example, even if the lower floor is made of reinforced concrete or steel and the load-bearing wall panel 3 is installed on the floor above, the load-bearing wall panel connection structures 1a and 1b can be highly tough and easy to maintain.

本発明の実施の形態は上述の形態に限ることなく、本発明の思想の範囲を逸脱しない範囲で適宜変更することができることは云うまでもない。 It goes without saying that the embodiment of the present invention is not limited to the above-mentioned embodiment, and can be modified as appropriate without departing from the scope of the concept of the present invention.

本発明に係る耐力壁パネル接続構造１ａ，１ｂは、例えば木造住宅に耐力壁パネル３を設置する構造として好適である。 The bearing wall panel connection structures 1a and 1b of the present invention are suitable, for example, as a structure for installing bearing wall panels 3 in a wooden house.

１ａ，１ｂ耐力壁パネル接続構造
２木製梁
３耐力壁パネル
４基礎
５第一の固定プレート
６第一の突出プレート
７第一接続部材
８第二の固定プレート
９第二の突出プレート
１０第二接続部材
１１貫通連結部
１４水平孔
２０挿入部
２１受入部
２７接合板
２８枠板
３０耐火板材
３２固定プレート
３４突出プレート
３５接続部材 Reference Signs List 1a, 1b Load-bearing wall panel connection structure 2 Wooden beam 3 Load-bearing wall panel 4 Foundation 5 First fixing plate 6 First protruding plate 7 First connection member 8 Second fixing plate 9 Second protruding plate 10 Second connection member 11 Through-hole connection portion 14 Horizontal hole 20 Insertion portion 21 Receiving portion 27 Joint plate 28 Frame plate 30 Fireproof plate material 32 Fixing plate 34 Protruding plate 35 Connection member

Claims

A load-bearing wall panel formed in a rectangular flat plate shape to bear the horizontal load of the building;
A fixing plate formed by protruding from the upper end or the lower end of the load-bearing wall panel;
A protruding plate that protrudes vertically from the horizontal plane of the structural member of the building and is abutted against the protruding end of the fixing plate so as to be flush with the fixing plate;
A connecting member that is fixed to the fixing plate and the protruding plate from an outer surface direction of the bearing wall panel and connects the fixing plate and the protruding plate;
Equipped with
The connecting member is plastically deformable by a horizontal force transmitted from the bearing wall panel, and is removably fixed to the fixing plate and the protruding plate ;
A load-bearing wall panel connection structure characterized in that the connecting member comprises a rectangular connecting plate that abuts against the fixed plate and the protruding plate and is joined to each plate with bolts and nuts, and a frame plate formed in a flat shape perpendicular to the connecting plate around the periphery of the connecting plate .

The load-bearing wall panels are arranged one above the other,
The structural member is a wooden beam formed between the two upper and lower load-bearing wall panels,
The fixing plate has a first fixing plate formed by protruding downward from a lower end of the upper bearing wall panel, and a second fixing plate formed by protruding upward from an upper end of the lower bearing wall panel,
The protruding plate includes a first protruding plate protruding upward from an upper surface of the wooden beam and a second protruding plate protruding downward from a lower surface of the wooden beam,
the connecting member includes a first connecting member that connects the first fixing plate and the first protruding plate, and a second connecting member that connects the second fixing plate and the second protruding plate,
The load-bearing wall panel connection structure according to claim 1 , characterized in that the first protruding plate and the second protruding plate are connected by a penetrating connecting member that penetrates the wooden beam in the vertical direction.

A load-bearing wall panel formed in a rectangular flat plate shape to bear the horizontal load of the building;
A fixing plate formed by protruding from the upper end or the lower end of the load-bearing wall panel;
A protruding plate that protrudes vertically from the horizontal plane of the structural member of the building and is abutted against the protruding end of the fixing plate so as to be flush with the fixing plate;
A connecting member that is fixed to the fixing plate and the protruding plate from an outer surface direction of the bearing wall panel and connects the fixing plate and the protruding plate;
Equipped with
The connecting member is plastically deformable by a horizontal force transmitted from the bearing wall panel, and is removably fixed to the fixing plate and the protruding plate ;
The load-bearing wall panels are arranged one above the other,
The structural member is a wooden beam formed between the two upper and lower load-bearing wall panels,
The fixing plate has a first fixing plate formed by protruding downward from a lower end of the upper bearing wall panel, and a second fixing plate formed by protruding upward from an upper end of the lower bearing wall panel,
The protruding plate includes a first protruding plate protruding upward from an upper surface of the wooden beam and a second protruding plate protruding downward from a lower surface of the wooden beam,
the connecting member includes a first connecting member that connects the first fixing plate and the first protruding plate, and a second connecting member that connects the second fixing plate and the second protruding plate,
A load-bearing wall panel connection structure characterized in that the first protruding plate and the second protruding plate are connected by a penetrating connecting material that penetrates the wooden beam in the vertical direction .

the through-connecting member has a cylindrical receiving portion fixed to one of the first protruding plate and the second protruding plate, and an inserting portion fixed to the other of the first protruding plate and the second protruding plate and inserted into the receiving portion,
The present invention relates to a structure for connecting a load-bearing wall panel to a load-bearing wall panel.

The horizontal hole is formed with a diameter larger than that of the pin, and a gap is formed between the horizontal hole and the pin. The load-bearing wall panel connection structure described in claim 4.

The fixing plate, the protruding plate, and the connecting member are made of steel having a predetermined fire resistance performance,
The load-bearing wall panel is a wooden load-bearing wall panel,
4. The structure for connecting load-bearing wall panels according to claim 2 or 3, characterized in that a fireproof plate is disposed between the load-bearing wall panel and the wooden beam.

The structural members are made of reinforced concrete or steel;
the protruding plate is fixed to the structural member and protrudes upward;
The fixing plate protrudes from the lower end of the bearing wall panel and abuts against the protruding plate,
2. The load-bearing wall panel connection structure according to claim 1 , wherein the connection member connects the fixed plate and the protruding plate.