JP5338382B2 - Vibration control panel - Google Patents

Vibration control panel Download PDF

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JP5338382B2
JP5338382B2 JP2009050010A JP2009050010A JP5338382B2 JP 5338382 B2 JP5338382 B2 JP 5338382B2 JP 2009050010 A JP2009050010 A JP 2009050010A JP 2009050010 A JP2009050010 A JP 2009050010A JP 5338382 B2 JP5338382 B2 JP 5338382B2
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joining
energy
energy absorbing
damping
diagonal
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JP2010203152A (en
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隆行 難波
義仁 坂本
佳 中川
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Jfeスチール株式会社
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本発明は、建築物に設置し、地震、風等の外力に対する建築物の応答を低減させて、振動を抑制する制振パネルに関するものである。   The present invention relates to a vibration control panel that is installed in a building and suppresses vibration by reducing the response of the building to external forces such as earthquakes and winds.
地震等の外力から建築物を保護する技術として、例えば、非特許文献1には、軽量鉄骨構造において、柱と梁に囲まれた構面内に、対角にブレース(斜材)を配置して耐震パネルを構成し、それによって、地震等の外力が作用した際に、建築物に発生する水平力に抵抗するようにしたものが示されている。   As a technology for protecting a building from external forces such as earthquakes, for example, Non-Patent Document 1 discloses a lightweight steel structure in which braces (diagonal materials) are arranged diagonally in a construction surface surrounded by columns and beams. It is shown that a seismic panel is constructed so that it resists the horizontal force generated in the building when an external force such as an earthquake acts.
また、特許文献1には、左右の柱間に斜めおよび水平の枠材を取り付け、中央のエネルギー吸収部に変形を集中させることでエネルギー吸収を行うものが示されている。   Japanese Patent Laid-Open No. 2004-228561 discloses an apparatus that absorbs energy by attaching diagonal and horizontal frame members between left and right columns and concentrating deformation on a central energy absorbing portion.
また、特許文献2、3には、構面内に鋼板パネルをエネルギー吸収要素とした制振装置を配置し、四隅を柱梁接合部と斜材を介して連結したものであって、斜材からの引張・圧縮の繰返し応力により制振装置にせん断変形を生じさせることにより、エネルギー吸収を行うものが示されている。   In Patent Documents 2 and 3, a vibration damping device having a steel plate panel as an energy absorbing element is arranged in the composition plane, and the four corners are connected to the beam-column joint portion through diagonal members. It has been shown that energy is absorbed by causing shear deformation in the vibration damping device by repeated stress of tension and compression from the above.
また、特許文献4には、構面内に制振装置(粘弾性ダンパー)を配置し、柱梁接合部と斜材を介して連結するものであって、上下斜材の相対変位により粘弾性体がエネルギー吸収を行うものが示されている。   Further, in Patent Document 4, a vibration damping device (viscoelastic damper) is arranged in the construction surface, and is connected to the column beam joint portion via an oblique member, and viscoelasticity is caused by relative displacement of the upper and lower oblique members. What the body absorbs is shown.
特開平09−273329号公報JP 09-273329 A 特開平11−062306号公報JP-A-11-062306 特開平2000−045560号公報JP 2000-045560 A 特開平2008−007935号公報JP 2008-007935 A
しかし、上記の非特許文献1に示された耐震パネルにおいては、軽量鉄骨構造で使用されるブレースは細径であることから、座屈により圧縮力を支持できない。あらかじめターンバックル等で張力を与えているが、相殺できる応力に限界がある。また、ブレースの引張降伏によるエネルギー吸収が可能であるが、その後はスリップ形の履歴となり、制振構造に対してエネルギー吸収能力が劣る。また、ブレース型の制振装置を配置する場合、圧縮座屈を発生させないための機構が必要となる。   However, in the earthquake-resistant panel shown in Non-Patent Document 1 described above, since the brace used in the lightweight steel structure is thin, it cannot support the compressive force due to buckling. Although tension is given in advance with a turnbuckle or the like, there is a limit to the stress that can be offset. In addition, energy absorption by tensile yielding of the brace is possible, but after that, a slip-type history is obtained, and the energy absorption capacity is inferior to the vibration damping structure. Further, when a brace-type vibration damping device is arranged, a mechanism for preventing compression buckling is required.
特許文献1に記載のものでは、枠材を柱に固定するために加工が必要であることと、部材数が増えるためコスト増となる可能性がある。また柱と梁の接合部の剛性が確保されていないとエネルギー吸収部に変形が集中しない可能性がある。   In the thing of patent document 1, since processing is required in order to fix a frame material to a pillar, since the number of members increases, cost may increase. Moreover, if the rigidity of the joint between the column and the beam is not ensured, there is a possibility that the deformation does not concentrate on the energy absorbing part.
また、特許文献2、3に記載のものでは、座屈補剛用の板に囲まれた鋼板パネルのせん断変形によりエネルギー吸収を行う制振装置を構面内に配置するが、この形式では斜材が座屈し圧縮力が伝達できない場合、パネルには引張力のみが作用し、繰り返し荷重が作用する場合に十分なエネルギー吸収が出来ない。   Moreover, in the thing of patent document 2, 3, the damping device which absorbs energy by the shear deformation of the steel plate panel enclosed by the board for buckling stiffening is arrange | positioned in a construction surface. If the material buckles and the compressive force cannot be transmitted, only the tensile force acts on the panel, and sufficient energy cannot be absorbed when a repeated load is applied.
また、特許文献4に記載のものは、長孔とピンの作用により制振装置の水平方向の変形を抑制するものであるが、装置の左右両辺の距離が一定に保たれるため、必ず一方の斜材には圧縮方向の変形を生じさせる。   Moreover, although the thing of patent document 4 suppresses the horizontal deformation | transformation of a damping device by the effect | action of a long hole and a pin, since the distance of the right and left sides of a device is kept constant, This diagonal material causes deformation in the compression direction.
本発明は、上記のような事情に鑑みてなされたものであり、簡素な構成でエネルギー吸収能力の高い制振パネルを実現することを目的とする。   This invention is made | formed in view of the above situations, and it aims at implement | achieving a damping panel with high energy absorption capability with a simple structure.
上記課題を解決するために、本発明は以下の特徴を有する。   In order to solve the above problems, the present invention has the following features.
[1]柱と梁に囲まれた構面内において、エネルギー吸収要素としてせん断変形によりエネルギー吸収を行う板材を有し、前記エネルギー吸収要素が両側面をフランジにより補強され曲げ応力に対し弾性を保ち、その両端部を曲げモーメントが伝達可能な状態で接合部材に接合されることにより構成される制振装置が構面中央に配置されており、制振装置の隅部と柱梁接合部が初期張力を導入可能な細長比250超の斜材を介して連結され、制振装置は前記斜材の引張力の作用で前記エネルギー吸収要素がせん断降伏してエネルギー吸収を行う制振パネルであって、制振装置は、エネルギー吸収要素とフランジからなるH形鋼を横向きに上下2本配置し、それぞれの両端に接合部材を接合して当該2本のH形鋼を連結した構造であることを特徴とする制振パネル。 [1] In a structure surrounded by columns and beams, an energy absorbing element is provided with a plate material that absorbs energy by shear deformation, and the energy absorbing element is reinforced by flanges on both sides to maintain elasticity against bending stress. The vibration damping device, which is constructed by joining the both ends to the joining member in a state where the bending moment can be transmitted, is arranged in the center of the construction surface, and the corner of the vibration damping device and the column beam joint are initially The damping device is a damping panel that is connected via a slanting member having a slenderness ratio exceeding 250 capable of introducing a tension, and the energy absorbing element shears and yields energy by the action of the tensile force of the slanting member. The vibration damping device has a structure in which two H-shaped steels each consisting of an energy absorbing element and a flange are arranged in the horizontal direction, and a joining member is joined to each end to connect the two H-shaped steels. Special And the damping panel.
[2]前記エネルギー吸収要素を低降伏点鋼で構成することを特徴とする前記[1]に記載の制振パネル。   [2] The vibration damping panel according to [1], wherein the energy absorption element is made of low yield point steel.
本発明の制振パネルは、制振装置の対角に引張力を作用させることで、もう一方の対角線が変形前よりも縮まり、従来のブレース構造では圧縮応力が生じる方向の斜材に大きな圧縮応力が作用しないため、繰り返し荷重が作用する場合に、荷重の方向が変化した直後に斜材の応力が引張に切り替わり、斜材に座屈補剛を施すことなく安定したエネルギー吸収が可能となる。また、エネルギー吸収部位に引張力が作用する場合でも両側面のフランジが応力を負担するため、エネルギー吸収部位の劣化が小さい。   In the vibration control panel of the present invention, by applying a tensile force to the diagonal of the vibration control device, the other diagonal is contracted more than before deformation, and in the conventional brace structure, the diagonal material in the direction in which compressive stress is generated is greatly compressed. Since stress does not act, when a repeated load is applied, the stress of the diagonal is switched to tension immediately after the direction of the load changes, and stable energy absorption is possible without applying buckling stiffening to the diagonal. . Further, even when a tensile force acts on the energy absorbing portion, the flanges on both sides bear the stress, so the deterioration of the energy absorbing portion is small.
本発明の基本的概念を説明するための図である。It is a figure for demonstrating the basic concept of this invention. 本発明の実施形態1を示す図である。It is a figure which shows Embodiment 1 of this invention. 本発明の実施形態2を示す図である。It is a figure which shows Embodiment 2 of this invention.
まず、本発明の基本的な考え方を述べる。   First, the basic concept of the present invention will be described.
図1(a)は、本発明に係る制振パネルの概念図である。本発明に係る制振パネルにおいては、柱3、梁4に囲まれた構面内に制振装置1を配置し、その4隅と柱梁接合部20の間に斜材2(2a、2b)を配し、引張力を伝達可能とする。制振装置1は内部のエネルギー吸収要素(板材)のせん断変形により、4隅の接合部を結んだ直線は、内角の変化する平行四辺形と同様の変形状態となる。そのため、構面に水平力が作用し層間変形が生じる場合、図1(b)に示す従来構造において一方の斜材2aに圧縮力が作用する状況においても、本発明の場合は制振装置1の変形により斜材2aの縮み変形が小さいか、あるいは逆に伸びが生じることで、座屈を生じにくくなる。そのため、変形後に逆方向の水平力が生じ、圧縮側斜材2aが引っ張られる場合も、直ちに応力を負担することが可能となり、安定した履歴を有する制振パネルを形成できる。   FIG. 1A is a conceptual diagram of a vibration control panel according to the present invention. In the vibration damping panel according to the present invention, the vibration damping device 1 is arranged in a construction surface surrounded by the pillar 3 and the beam 4, and the diagonal member 2 (2 a, 2 b) is provided between the four corners and the pillar beam joint 20. ) To enable transmission of tensile force. In the vibration damping device 1, the straight line connecting the joints at the four corners is in the same deformation state as the parallelogram whose inner angle changes due to the shear deformation of the internal energy absorbing element (plate material). Therefore, in the case of the present invention, in the case of the present invention, when the horizontal force acts on the construction surface and interlayer deformation occurs, even in the situation where the compressive force acts on one diagonal member 2a in the conventional structure shown in FIG. Due to this deformation, the shrinkage deformation of the diagonal member 2a is small, or conversely, elongation occurs, so that buckling is less likely to occur. Therefore, even when a horizontal force in the reverse direction is generated after the deformation and the compression-side diagonal member 2a is pulled, it is possible to immediately bear the stress, and a vibration control panel having a stable history can be formed.
そして、上述したように、本発明の制振パネルにおいては、斜材2に作用する圧縮力が小さくなるようにしており、逆に言えば、斜材2が圧縮力を負担することは期待していないので、建築基準法施工令の規定によって鉄骨造では圧縮材として使用されない細長比が250超えの細長くて軽量の部材を斜材2に使用しても制振性能の低下が少ない。   As described above, in the vibration control panel of the present invention, the compressive force acting on the diagonal member 2 is reduced, and conversely, the diagonal member 2 is expected to bear the compressive force. Therefore, even if a slender and lightweight member having a slenderness ratio exceeding 250, which is not used as a compression material in steel frame construction, is used for the diagonal member 2 according to the provisions of the Building Standards Act, there is little decrease in damping performance.
また、斜材2に初期張力を導入することで、斜材2に圧縮応力が生じない構造とすることが出来る。   Further, by introducing an initial tension to the diagonal member 2, it is possible to make a structure in which no compressive stress is generated on the diagonal member 2.
また制振装置1の回転によるロスを防ぐため、斜材2a、2bはそれぞれ一直線上に配置することが望ましい。   In order to prevent loss due to the rotation of the vibration damping device 1, it is desirable that the diagonal members 2a and 2b be arranged on a straight line.
次に、本発明の具体的な実施形態を説明する。   Next, specific embodiments of the present invention will be described.
(実施形態1)
図2は、本発明の実施形態1に係る制振パネルを示すものであり、(a)は立面図、(b)は(a)のA−A矢視断面図、(c)は(a)のB−B矢視断面図、(d)は制振装置の拡大図である。
(Embodiment 1)
2A and 2B show a vibration damping panel according to Embodiment 1 of the present invention, in which FIG. 2A is an elevation view, FIG. 2B is a cross-sectional view taken along the line A-A in FIG. A sectional view taken along line B-B in (a), and (d) is an enlarged view of the vibration damping device.
この実施形態1においては、制振装置1aが、エネルギー吸収要素(板材)5と、フランジ18からなるH形鋼を縦に配置し、その上下両脇に接合部材6を接合した構造である。なお、図2(d)中の10はリブ(スチフナ)である。   In the first embodiment, the vibration damping device 1a has a structure in which an energy-absorbing element (plate material) 5 and an H-shaped steel made up of a flange 18 are arranged vertically, and a joining member 6 is joined to both the upper and lower sides. In addition, 10 in FIG.2 (d) is a rib (stiffener).
ここで、エネルギー吸収要素5は低降伏点鋼で構成することが望ましい。そして、エネルギー吸収要素5のせん断降伏時に接合部材6の変形が小さくなるよう、接合部材6およびその接合部の剛性、耐力を十分確保することが望ましい。また、エネルギー吸収要素5のせん断降伏時に引張力と曲げモーメントの作用によりフランジ18が降伏および局部座屈しないよう設計することが望ましい。   Here, it is desirable that the energy absorbing element 5 is made of a low yield point steel. Then, it is desirable to sufficiently ensure the rigidity and proof stress of the joining member 6 and its joined portion so that the deformation of the joining member 6 is reduced when the energy absorbing element 5 is shear yielded. Further, it is desirable to design the flange 18 so that it does not yield and locally buckle due to the action of tensile force and bending moment when the energy absorbing element 5 is shear yielded.
そして、接合部材6には斜材2との接合用孔12を有しており、制振装置1は斜材2を介して柱3、梁4に囲まれた構面内に配置される。斜材2は両端に羽子板14が接合され、羽子板14と制振装置1がボルト接合される。また、4本の斜材のうち、一直線上でない2本の中間部にターンバックル13が配置され、初期張力を導入可能とする。   The joining member 6 has a joining hole 12 with the diagonal member 2, and the vibration damping device 1 is arranged in a construction surface surrounded by the pillar 3 and the beam 4 via the diagonal member 2. The diagonal member 2 has a battledore 14 bonded to both ends, and the battledore 14 and the damping device 1 are bolted. Moreover, the turnbuckle 13 is arrange | positioned in two intermediate parts which are not on a straight line among four diagonal materials, and can introduce | transduce initial tension.
(実施形態2)
図3は、本発明の実施形態2に係る制振パネルを示すものであり、(a)は立面図、(b)は(a)のA−A矢視断面図、(c)は(a)のB−B矢視断面図、(d)は制振装置の拡大図である。
(Embodiment 2)
3A and 3B show a vibration control panel according to Embodiment 2 of the present invention, in which FIG. 3A is an elevation view, FIG. 3B is a cross-sectional view taken along the line A-A in FIG. A sectional view taken along line B-B in (a), and (d) is an enlarged view of the vibration damping device.
この実施形態2においては、制振装置1bが、エネルギー吸収要素(板材)5と、フランジ18からなるH形鋼を横向きに2本配置し、それぞれの両端に接合部材6を接合した構造である。なお、図3(d)中の10はリブ(スチフナ)である。   In the second embodiment, the vibration damping device 1b has a structure in which two H-shaped steels each composed of an energy absorbing element (plate material) 5 and a flange 18 are arranged in the horizontal direction, and the joining members 6 are joined to both ends. . In addition, 10 in FIG.3 (d) is a rib (stiffener).
ここで、エネルギー吸収要素5は低降伏点鋼で構成することが望ましい。そして、エネルギー吸収要素5のせん断降伏時に接合部材6の変形が小さくなるよう、接合部材6およびその接合部の剛性、耐力を十分確保することが望ましい。また、エネルギー吸収要素5のせん断降伏時に引張力と曲げモーメントの作用によりフランジ18が降伏および局部座屈しないよう設計することが望ましい。   Here, it is desirable that the energy absorbing element 5 is made of a low yield point steel. Then, it is desirable to sufficiently ensure the rigidity and proof stress of the joining member 6 and its joined portion so that the deformation of the joining member 6 is reduced when the energy absorbing element 5 is shear yielded. Further, it is desirable to design the flange 18 so that it does not yield and locally buckle due to the action of tensile force and bending moment when the energy absorbing element 5 is shear yielded.
なお、その他の構造は、上述した実施形態1と同様である。   Other structures are the same as those of the first embodiment described above.
1 制振装置
1a、1b 制振装置
2 斜材(ブレース)
2a 圧縮側の斜材
2b 引張側の斜材
3 柱
4 梁
5 板材(エネルギー吸収要素)
6 接合部材
10 リブ(スチフナ)
12 斜材との接合部
13 ターンバックル
14 羽子板
18 フランジ
20 柱梁接合部
1 Damping device 1a, 1b Damping device 2 Diagonal material (brace)
2a Diagonal material on the compression side 2b Diagonal material on the tensile side 3 Columns 4 Beams 5 Plate material (energy absorption element)
6 Joining members 10 Ribs (stiffeners)
12 Joints with diagonal materials 13 Turnbuckles 14 Linges 18 Flange 20 Beam-column joints

Claims (2)

  1. 柱と梁に囲まれた構面内において、エネルギー吸収要素としてせん断変形によりエネルギー吸収を行う板材を有し、前記エネルギー吸収要素が両側面をフランジにより補強され曲げ応力に対し弾性を保ち、その両端部を曲げモーメントが伝達可能な状態で接合部材に接合されることにより構成される制振装置が構面中央に配置されており、制振装置の隅部と柱梁接合部が初期張力を導入可能な細長比250超の斜材を介して連結され、制振装置は前記斜材の引張力の作用で前記エネルギー吸収要素がせん断降伏してエネルギー吸収を行う制振パネルであって、制振装置は、エネルギー吸収要素とフランジからなるH形鋼を横向きに上下2本配置し、それぞれの両端に接合部材を接合して当該2本のH形鋼を連結した構造であることを特徴とする制振パネル。 In a construction plane surrounded by columns and beams, as an energy absorbing element, there is a plate material that absorbs energy by shear deformation, and the energy absorbing element is reinforced by flanges on both sides to maintain elasticity against bending stress, The vibration damping device, which is constructed by joining the part to the joining member in a state where the bending moment can be transmitted, is placed in the center of the construction surface, and the corner of the vibration damping device and the column beam joint introduce initial tension. The vibration control device is a vibration control panel that is connected through a slant member having a possible slenderness ratio exceeding 250, and the energy absorption element shears and yields energy by the action of the tensile force of the slant member. device, the H-shaped steel made of the energy absorbing element and the flange disposed vertically two sideways, to characterized in that it is a structure in which by joining the joining member to both ends connecting the two H-beams the Damping panel.
  2. 前記エネルギー吸収要素を低降伏点鋼で構成することを特徴とする請求項1に記載の制振パネル。   The damping panel according to claim 1, wherein the energy absorbing element is made of low yield point steel.
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