JP2001248324A - Friction joint type energy absorbing device for frame - Google Patents

Friction joint type energy absorbing device for frame

Info

Publication number
JP2001248324A
JP2001248324A JP2000058758A JP2000058758A JP2001248324A JP 2001248324 A JP2001248324 A JP 2001248324A JP 2000058758 A JP2000058758 A JP 2000058758A JP 2000058758 A JP2000058758 A JP 2000058758A JP 2001248324 A JP2001248324 A JP 2001248324A
Authority
JP
Japan
Prior art keywords
plate
friction
damper
strength bolt
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2000058758A
Other languages
Japanese (ja)
Inventor
Shizuo Tsujioka
静雄 辻岡
Original Assignee
Shizuo Tsujioka
静雄 辻岡
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shizuo Tsujioka, 静雄 辻岡 filed Critical Shizuo Tsujioka
Priority to JP2000058758A priority Critical patent/JP2001248324A/en
Publication of JP2001248324A publication Critical patent/JP2001248324A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a friction damper having many friction planes with less numbers of plate materials and being applicable to a wide range of deformation while reducing the size and cost. SOLUTION: The friction damper 1 comprises a layered plate structure 5 consisting of friction plate materials 6 and sliding plate materials 7 and a high power bolt 8 for clamping the same. The high power bolt 8 is associated with plate washers 10A, 10B on the head side and on the nut side, respectively, and the sliding plate material 7 having a slot 7a, in which the high power bolt 8 is inserted, extending to the longitudinal direction of the plate material and being displaceable relative to the high power bolt 8 is arranged between the friction material 6 non-displaceable relative to the high power bolt 8 and each of the plate washer 10A on the head side of the high power bolt 8 and the plate washer 10B on the nut side. The many friction planes are kept with less numbers of friction plate materials and sliding plate materials to offer energy absorbing effect in earthquake in a range from a small scale to a large scale.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は架構用摩擦接合式エ
ネルギー吸収装置に係り、詳しくは、例えばハの字状に
配置された剛性の大きい筋違構造の頂部と剛性の小さな
柱梁架構を形成する梁の略中央部位とを接合し、建物の
減衰性能を向上させることができるようにした摩擦ダン
パーに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction-joining type energy absorbing device for a frame, and more particularly, to forming a top portion of a highly rigid braced structure and a columnar beam structure of small rigidity, for example, arranged in a C-shape. TECHNICAL FIELD The present invention relates to a friction damper that is joined to a substantially central portion of a beam to be improved so that the damping performance of a building can be improved.

【0002】[0002]

【従来の技術】剛性の大きい筋違構造と剛性の小さな柱
梁骨組の接合部にダンパーを付加し、建物の減衰性能を
向上させることによって応答低減が図られるようにした
例が多くなってきている。この種のダンパーとしては、
特開平8−193635号公報や特開平11−1901
47号公報等に記載されているような摩擦材を用いた摩
擦ダンパーのほかに、特開平10−96337号公報に
記載された鉛ダンパー、特開平10−299284号公
報に開示された鋼材ダンパー等がある。
2. Description of the Related Art In many cases, a damper is added to a joint between a braced structure having high rigidity and a beam-column framework having low rigidity to improve the damping performance of a building so that the response can be reduced. I have. As this kind of damper,
JP-A-8-193635 and JP-A-11-1901
No. 47, etc., besides the friction damper using a friction material, a lead damper described in JP-A-10-96337, a steel damper disclosed in JP-A-10-299284, etc. There is.

【0003】鉛ダンパーは小さな変位を迅速に吸収でき
る利点がある反面、構造が複雑化して高価になることや
熱で溶けだす等の問題を抱えている。鋼材ダンパーは低
降伏点鋼が使用されるなどして、降伏後の大きな塑性変
形を利用して変位を吸収させる場合に好適である。しか
し、小さな変位には鈍感であり、結局は例えば特開平7
−62927号公報に記載されているように、鉛ダンパ
ー等の他種のダンパーと併用しなければ、地震規模の大
小に拘わらず対応させることはできなくなる難点があ
る。
[0003] The lead damper has the advantage of being able to quickly absorb small displacements, but has the problem that the structure is complicated and expensive, and that it melts out due to heat. The steel damper is suitable for the case where low yield point steel is used and the displacement is absorbed by utilizing large plastic deformation after yielding. However, they are insensitive to small displacements.
As described in Japanese Unexamined Patent Publication No. 62927/1994, there is a problem that it is not possible to cope with the earthquake regardless of the magnitude of the magnitude of the earthquake unless it is used in combination with another type of damper such as a lead damper.

【0004】摩擦ダンパーは剛塑性変形の履歴特性を示
す履歴減衰形ダンパーであり、荷重変形曲線がループを
描くことを利用して振動の減衰を図ろうとするもので、
そのヒステリシスループの面積が一周期の間に吸収する
エネルギーに相当する。この種のダンパーにおいては高
力ボルト式の場合、摩擦力の安定性向上や摩擦面の耐久
性向上さらには摩擦音の抑制等の点から潤滑剤を用いて
敢えて低滑り耐力としたものや、焼結金属シート等の摩
擦材を用いたもの等がある。又、高耐力を目指してアル
ミ溶射摩擦面としたものも提案されているが、脱脂や焼
付きなど解決しなければならない問題が残る。
A friction damper is a hysteresis damping type damper exhibiting a hysteresis characteristic of rigid-plastic deformation, and attempts to attenuate vibration by utilizing a loop of a load deformation curve.
The area of the hysteresis loop corresponds to the energy absorbed during one cycle. In the case of a high-strength bolt type damper, this type of damper is designed to have a low slip resistance with the use of a lubricant in order to improve the stability of frictional force, improve the durability of frictional surfaces, and suppress frictional noise. There is one using a friction material such as a binding metal sheet. Further, an aluminum-sprayed friction surface has been proposed for high proof stress, but problems such as degreasing and seizure remain to be solved.

【0005】[0005]

【発明が解決しようとする課題】ところで、摩擦ダンパ
ーとして比較的廉価に製造できると共に保守点検も簡便
となるものに、摩擦板材と滑り板材とを高力ボルトで挟
圧し、両板間に発生する摩擦力によりダンパー機能を発
揮させるようにした摩擦接合式エネルギー吸収装置があ
る。
A friction damper which is relatively inexpensive to manufacture and which can be easily maintained and inspected is formed by sandwiching a friction plate and a slide plate with high-strength bolts to generate a friction damper between the two plates. There is a friction joining type energy absorbing device that exerts a damper function by frictional force.

【0006】図8は特開平11−190147号公報等
に記載されたものと同じ趣旨の摩擦接合式エネルギー吸
収装置を示したもので、2枚の摩擦板材31,31とそ
れらに挟まれた1枚の滑り板材32とからなっている。
摩擦板材31は高力ボルト33に対して相対的に変位す
ることができない板材で、高力ボルト33の軸部が挿通
するに十分な程度の小さい孔31aを有するにとどま
る。一方、滑り板材32には、高力ボルトが挿通すると
共に高力ボルトに相対変位可能とするため長手方向に延
びるスロット32aが備えられている。
FIG. 8 shows a friction-joining type energy absorbing device having the same purpose as that described in Japanese Patent Application Laid-Open No. 11-190147, etc., in which two friction plates 31 and 31 are sandwiched between them. It consists of two sliding plate members 32.
The friction plate 31 is a plate that cannot be displaced relative to the high-strength bolt 33, and has only a small hole 31a that is large enough to allow the shaft of the high-strength bolt 33 to pass therethrough. On the other hand, the sliding plate member 32 is provided with a slot 32a extending in the longitudinal direction so that the high-strength bolt can be inserted and relatively displaced to the high-strength bolt.

【0007】いま、この摩擦ダンパーに作用した引張力
Fが両板間に生じる摩擦力を超えた場合に、高力ボルト
33の軸部は左端に当接するまでスロット32a内を移
動することができる。勿論、圧縮力が作用した場合には
右端に当接するまで変位することができ、結局ダンパー
はスロットの長さから高力ボルトの径を差し引いた長さ
を最大とする伸縮が実現される。それ故スロットの寸法
選定によっては、中小の地震から大地震までそのエネル
ギーを吸収させることができるようになる利点がある。
If the tensile force F acting on the friction damper exceeds the friction force generated between the two plates, the shaft of the high-strength bolt 33 can move in the slot 32a until it contacts the left end. . Of course, when a compressive force is applied, the damper can be displaced until it comes into contact with the right end, and eventually the damper can be expanded and contracted to the maximum length obtained by subtracting the diameter of the high-strength bolt from the length of the slot. Therefore, depending on the size of the slot, there is an advantage that the energy can be absorbed from a small earthquake to a large earthquake.

【0008】この種の摩擦接合式エネルギー吸収装置に
おいては、摩擦力は図8の(b)に表された上側の摩擦
板材の下面と滑り板材の上面、滑り板材の下面と下側の
摩擦板材の上面の符号41,42の箇所において発生す
ることになる。図3の(b)は引張と圧縮の繰り返し荷
重に対する摩擦ダンパーの伸縮量を示したもので、この
例では±15mmまで略20kNの耐力を持続しながら
エネルギーを吸収していることが分かる。
In this type of frictional joint type energy absorbing device, the friction force is expressed by the lower surface of the upper friction plate and the upper surface of the slide plate, and the lower surface of the slide plate and the lower friction plate shown in FIG. Will occur at locations 41 and 42 on the upper surface of the. FIG. 3B shows the amount of expansion and contraction of the friction damper with respect to the repeated load of tension and compression. In this example, it can be seen that the energy is absorbed while maintaining the proof stress of approximately 20 kN up to ± 15 mm.

【0009】ところで、この種のダンパーの耐力を増大
させたい場合、最も簡単には高力ボルトの本数を増やせ
ばよい。しかし、ボルト数を増やすことなく耐力を大き
くしようとすれば、締付け力を大きくするか摩擦特性の
良好な特殊な鋼板もしくは特殊な表面処理が要求される
ことになる。
When it is desired to increase the proof stress of this type of damper, the simplest method is to increase the number of high-strength bolts. However, in order to increase the proof stress without increasing the number of bolts, it is necessary to increase the tightening force or to use a special steel plate or a special surface treatment having good friction characteristics.

【0010】尚、図9のように摩擦板材および滑り板材
を各1枚追加すれば、符号41ないし44で与えた4箇
所の接触面で摩擦力を発生させることができる。これに
よっても、実質的にダンパーの耐力倍増が実現されるこ
とになるが、このように摩擦面を増やして耐力を増大さ
せるには摩擦板材と滑り板材の枚数増加が余儀なくされ
る。
If one friction plate and one slide plate are added as shown in FIG. 9, a frictional force can be generated at four contact surfaces designated by reference numerals 41 to 44. This also substantially doubles the proof stress of the damper. However, in order to increase the proof stress by increasing the friction surface, the number of friction plates and sliding plates must be increased.

【0011】本発明は上記した問題に鑑みてなされたも
ので、その目的は、摩擦板材や滑り板材の枚数が少なく
ても摩擦面を多く確保でき、これによって小型かつ安価
なダンパーでありながら中小規模の地震から大地震に至
るまで広範囲に対応可能な耐力を備えることができるよ
うにした架構用摩擦接合式エネルギー吸収装置を提供す
ることである。
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to secure a large number of friction surfaces even with a small number of friction plates and sliding plates. An object of the present invention is to provide a friction welding type energy absorbing device for a frame capable of providing a proof strength capable of coping with a wide range from a large-scale earthquake to a large earthquake.

【0012】[0012]

【課題を解決するための手段】本発明は、相互に面接触
する滑り板材と摩擦板材とからなる重ね板構造体と、そ
の各板材を貫く孔に挿通されて前記重ね板構造体を挟圧
する高力ボルトとを備え、滑り板材が摩擦板材との間で
発生する摩擦力に抗して変位することによりエネルギー
を吸収し、鉄骨構造物の減衰性能を発揮させることがで
きるようになっている架構用のエネルギー吸収装置に適
用される。その特徴とするところは、図1を参照して、
高力ボルト8はそのヘッド側およびナット側にそれぞれ
板座金10A,10Bを伴い、高力ボルト8の挿通する
孔(スロット)7aが板材の長手方向に延びてその高力
ボルト8に相対変位可能な滑り板材7が、高力ボルト8
に相対変位不可能な摩擦板材6と高力ボルト8のヘッド
側もしくはナット側の板座金10A,10Bとの間に配
置されていることである。
SUMMARY OF THE INVENTION According to the present invention, there is provided a laminated plate structure comprising a sliding plate material and a friction plate material which are in surface contact with each other, and is inserted into a hole passing through each plate material to clamp the laminated plate structure. It has a high-strength bolt and absorbs energy by displacing the sliding plate material against the frictional force generated between it and the friction plate material, so that the damping performance of the steel structure can be exhibited. Applied to frame energy absorbers. The feature is, with reference to FIG.
The high-strength bolt 8 has plate washers 10A and 10B on its head side and nut side, respectively, and a hole (slot) 7a through which the high-strength bolt 8 is inserted extends in the longitudinal direction of the plate material and can be relatively displaced to the high-strength bolt 8. Sliding plate 7 is a high-strength bolt 8
Is disposed between the friction plate 6 which cannot be relatively displaced and the plate washers 10A and 10B on the head side or the nut side of the high strength bolt 8.

【0013】図7を参照して、摩擦板材が複数枚設けら
れると共に、その摩擦板材6A,6Bの間に滑り板材7
と同じ構造の副滑り板材7Cを介在させるようにしてお
いてもよい。
Referring to FIG. 7, a plurality of friction plates are provided, and a sliding plate 7 is provided between the friction plates 6A and 6B.
A sub-sliding plate 7C having the same structure as that described above may be interposed.

【0014】[0014]

【発明の実施の形態】以下に、本発明に係る架構用摩擦
接合式エネルギー吸収装置を、図面に基づいて詳細に説
明する。図1は重ね板構造体を高力ボルトによって挟圧
した摩擦ダンパー1の平面図および断面図を示し、図2
のように、剛性の大きい例えばハの字状に配置された筋
違構造2の頂部と剛性の小さな柱梁架構3の上側に位置
する梁3aの略中央部位との接合部に適用される。
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a friction welding type energy absorbing device for a frame according to the present invention. FIG. 1 shows a plan view and a sectional view of a friction damper 1 in which a laminated plate structure is sandwiched by high-strength bolts.
As described above, the present invention is applied to a joint between a top portion of a braced structure 2 having a large rigidity, for example, a C-shape, and a substantially central portion of a beam 3a located above a columnar frame 3 having a small rigidity.

【0015】このダンパーは、小さな地震から規模の大
きなものまでそのエネルギーを簡易な構造によって吸収
しようとするもので、これによって建物の減衰性能を発
揮させることができるようになっている。尚、筋違構造
2は地震や風等により建築物に入る水平力に対する抵抗
要素として採用されているものであることは述べるまで
もない。
This damper is intended to absorb the energy from a small earthquake to a large one with a simple structure, thereby making it possible to exhibit the damping performance of the building. Needless to say, the bracing structure 2 is employed as a resistance element against horizontal force entering the building due to an earthquake, wind, or the like.

【0016】図1を参照して、本摩擦ダンパーを構成す
る重ね板構造体5は摩擦板材6に滑り板材7を圧接させ
たもので、両板材が相対的に変位したときその圧接面に
摩擦力を発生させ、重ね板構造体5に作用する引張力お
よび圧縮力を吸収させることができるようになってい
る。
Referring to FIG. 1, a laminated plate structure 5 constituting the present friction damper has a sliding plate member 7 pressed against a friction plate member 6, and when both plate members are relatively displaced, friction occurs on the pressed contact surface. A force is generated, and a tensile force and a compressive force acting on the laminated plate structure 5 can be absorbed.

【0017】その重ね板構造体5のそれぞれの板材とし
ては磨耗特性の良好な高強度鋼板が使用され、後述する
図3に示すような安定した履歴特性と大きな累積滑り量
を得ることができる。これらの板材にはそれぞれを貫く
ように孔6a,7aが設けられ、高力ボルト8を通して
ナット9が締められると、滑り板材7が摩擦板材6に圧
接された状態に保持される。
As the respective plate members of the laminated plate structure 5, a high-strength steel plate having good wear characteristics is used, and a stable hysteresis characteristic and a large cumulative slip amount can be obtained as shown in FIG. Holes 6 a and 7 a are provided in these plate members so as to penetrate them, and when the nut 9 is tightened through the high-strength bolt 8, the sliding plate member 7 is held in a state of being pressed against the friction plate member 6.

【0018】摩擦板材6は高力ボルト8に対して相対的
に変位しないようになっており、そのため上記した孔6
aはボルトの軸部が挿通できる程度の丸孔である。一
方、滑り板材7は高力ボルト8に対して相対的に変位で
きるように、ボルトのための挿通孔は板材の長手方向に
延びるスロット7aとなっている。
The friction plate 6 is not displaced relative to the high-strength bolt 8, so that the hole 6
a is a round hole that allows the shaft of the bolt to be inserted. On the other hand, the insertion hole for the bolt is a slot 7a extending in the longitudinal direction of the plate so that the slide plate 7 can be displaced relative to the high-strength bolt 8.

【0019】上記した高力ボルト8は図1の例では1本
のみ使用されているが、そのヘッド側およびナット側に
は平面形が例えば矩形をなす板座金10A,10Bを伴
っており、高力ボルトによる挟圧力を重ね板構造体に確
実かつ均等に及ぼすことができるように配慮されてい
る。尚、各板座金は次に述べるように摩擦力を発生させ
るためのものでもあるので、所要の摩擦力を発揮するに
十分な接触面積を備えた寸法に選定される。
Although only one high-strength bolt 8 is used in the example shown in FIG. 1, the head side and the nut side are provided with plate washers 10A and 10B having, for example, rectangular planar shapes. Care is taken to ensure that the clamping force of the force bolt can be applied to the laminated plate structure reliably and uniformly. Since each plate washer is also for generating a frictional force as described below, it is selected to have a size having a contact area sufficient to exert a required frictional force.

【0020】本例においては、図1の(b)から分かる
ように、摩擦板材6が1枚であり、滑り板材7は2枚採
用されている。板材が合計3枚である点では従来技術の
項で説明した摩擦ダンパー(図8を参照)と異なるとこ
ろがない。しかし、注目すべきは、滑り板材7が摩擦板
材6とヘッド側もしくはナット側の各板座金10A,1
0Bとの間に配置されていることである。因みに、高力
ボルト8には所定のトルクが与えられ、重ね板構造体5
には設計上の耐力が発揮されるように予め調整されるこ
とは言うまでもない。
In this example, as can be seen from FIG. 1B, one friction plate 6 and two sliding plates 7 are employed. There is no difference from the friction damper (see FIG. 8) described in the section of the prior art in that the total number of the plate members is three. It should be noted, however, that the sliding plate 7 is in contact with the friction plate 6 and the plate washers 10A, 1 on the head side or the nut side.
0B. Incidentally, a predetermined torque is given to the high-strength bolt 8,
It is needless to say that is adjusted in advance so that the design strength is exhibited.

【0021】その結果、ヘッド側の板座金10Aと上側
の滑り板材7Aとの接触面11、その滑り板材7Aと摩
擦板材6との接触面12、その摩擦板材6と下側の滑り
板材7Bとの接触面13、その滑り板材7Bとナット側
の板座金10Bとの接触面14のそれぞれに、摩擦面を
与えておくことができる。即ち、図8に比べれば2倍の
数の摩擦面を得ることができる。
As a result, the contact surface 11 between the plate washer 10A on the head side and the upper sliding plate 7A, the contact surface 12 between the sliding plate 7A and the friction plate 6, the friction plate 6 and the lower sliding plate 7B, A friction surface can be given to each of the contact surface 13 and the contact surface 14 between the sliding plate 7B and the plate washer 10B on the nut side. That is, twice as many friction surfaces can be obtained as compared with FIG.

【0022】さらに述べれば、本例と同じく4箇所の摩
擦面が得られる図9の例と対比すれば分かるように、板
材の枚数が少ないだけでなく次に述べるボルト17も短
いもので済むという利点がある。
More specifically, as can be seen from a comparison with the example of FIG. 9 in which four friction surfaces are obtained in the same manner as in the present embodiment, not only the number of plate members is small, but also the bolt 17 described below is short. There are advantages.

【0023】図1中で与えられた符号の15,16はピ
ン継手であり、ボルト17により滑り板材7A,7Bと
接続されるピン継手15には、対面する滑り板材の間に
突入する接続用舌片15aが設けられ、ボルト18によ
り摩擦板材6と接続されるピン継手16には摩擦板材の
端部を挿入させることができる切欠き16aが形成され
ている。何れの側のピン継手を筋違構造の頂部と接合し
なければならないというものではないが、各ピン継手1
5,16を図示のごとくクレビス構造としておけば、梁
3aの中央部位や筋違構造2の頂部に取りつけられたガ
セットプレート19,20(図2を参照)と簡単にピン
結合することができる。
Reference numerals 15 and 16 given in FIG. 1 denote pin joints. The pin joint 15 connected to the sliding plate members 7A and 7B by bolts 17 has a connection for projecting between the facing sliding plate members. A tongue piece 15a is provided, and a pin joint 16 connected to the friction plate 6 by a bolt 18 is formed with a notch 16a into which an end of the friction plate can be inserted. Although it is not required that the pin joint on either side be joined to the top of the bracing structure, each pin joint 1
When the clevis structures 5 and 16 are formed as shown in the drawing, the gusset plates 19 and 20 (see FIG. 2) attached to the central portion of the beam 3a and the top of the bracing structure 2 can be easily pin-connected.

【0024】このような構造の摩擦接合式エネルギー吸
収装置は、そのピン間距離Lが例えば450mmといっ
た長さであり、柱間隔が例えば6mの柱梁架構の上側の
梁の略中央に設置されることになる。図1の(b)にお
いて、滑り板材のスロット7aの長さが46mm、高力
ボルトが16mmφとすれば、本摩擦ダンパーは引張と
圧縮の合計で30mmの伸縮が可能となる。
The friction welding type energy absorbing device having such a structure has a distance L between pins of, for example, 450 mm, and is installed at substantially the center of the upper beam of a column-to-column frame having a column interval of, for example, 6 m. Will be. In FIG. 1B, if the length of the slot 7a of the sliding plate material is 46 mm and the high-strength bolt is 16 mmφ, the friction damper can expand and contract by 30 mm in total of tension and compression.

【0025】図3の(a)は、本摩擦ダンパーに引張と
圧縮の繰り返し荷重が作用した場合の重ね板構造体の変
形量を示す。これは変位速度を6.0cm/秒とした場
合の例であるが、荷重が作用し始めたときは板材の接触
面に静摩擦が働く関係上、例えば80kNの大きな力に
抗しながら変位することになり、逆荷重(揺れ戻しによ
る)に対してもそれに近い力を発揮している。
FIG. 3A shows the amount of deformation of the laminated plate structure when the tensile and compressive loads are repeatedly applied to the friction damper. This is an example in which the displacement speed is 6.0 cm / sec. However, when a load starts to act, due to the static friction acting on the contact surface of the plate material, the displacement should be made against a large force of, for example, 80 kN. And exerts a force close to it against reverse load (due to swing back).

【0026】その間の滑り板材の変位量は±数mm程度
であるが、その後も繰り返される荷重に対しては動摩擦
状態におかれるため摩擦力は半減するものの、±5mm
から±15mmの変位に対して常に40kNもの耐力が
発揮されていることを知ることができる。
The displacement of the sliding plate material during this period is about ± several millimeters. However, even if the load is repeated thereafter, the frictional force is reduced by half since it is in a dynamic friction state.
It can be seen that a proof stress of as much as 40 kN is always exerted for a displacement of ± 15 mm.

【0027】これは、同じ寸法の摩擦ダンパーである図
8の従来例の場合の図3の(b)に示した耐力の略2倍
を示している。即ち、摩擦面の数が倍増すれば耐力も比
例的に増加していることがデータの上からも読み取るこ
とができる。尚、ダンパーの伸縮する状態を模式的に表
すと、弾性域にある間は柱梁架構3が図4のように揺れ
かつ戻される。
This is approximately twice the proof stress shown in FIG. 3B in the case of the conventional example of FIG. 8 which is a friction damper of the same size. That is, it can be seen from the data that the proof stress increases proportionally as the number of friction surfaces doubles. In addition, when the state of expansion and contraction of the damper is schematically represented, the beam-column frame 3 swings and returns as shown in FIG. 4 while in the elastic range.

【0028】このようなダンパーは、建物の架構のうち
筋違構造が適用されているところでは原則的に全部採用
されることになる関係上、1つの鉄骨建築物に採用され
る数は無視できるものでない。ましてや、さらなる耐力
の増大を狙って図5に示したように1つの架構に複数個
使用する場合には、より一層多くのダンパーを準備して
おかなければならなくなる。そのうえ一旦大地震(例え
ば震度6以上)に遭遇すると、次回に備えて所要耐力の
保持確認も必要となる。
The number of such dampers employed in one steel frame building is negligible because, in principle, all such dampers are employed where the braced structure is applied. Not something. Further, when a plurality of frames are used as shown in FIG. 5 with the aim of further increasing the proof stress, it is necessary to prepare even more dampers. In addition, once a large earthquake (for example, seismic intensity 6 or more) is encountered, it is necessary to confirm that the required strength is maintained for the next time.

【0029】ところが、本摩擦ダンパーの使用個数が多
くなっても、鋼板を重ね合わせた簡素な構造で安価であ
り又小型化が可能ゆえに、建築費の大幅な高騰を招くほ
どのものでない。一方、耐力の保持確認は高力ボルトの
トルクチェック等でよいことから、メンテナンス作業は
例えば鉛ダンパーと鋼材ダンパーの組み合わせダンパー
に比較すれば格段に簡便なものとなる。尚、本摩擦ダン
パーは筋違構造のみならず、柱梁架構にPC板等の耐震
壁が採用されている場合にも、そのパネルと梁との間に
図2や図5と同じ要領で使用することができる。
However, even if the number of the present friction dampers used is large, it is not so large as to cause a large rise in construction costs because it is inexpensive with a simple structure in which steel plates are stacked and can be miniaturized. On the other hand, since the maintenance of the proof stress can be checked by checking the torque of the high-strength bolts, the maintenance work becomes much simpler than, for example, a combined damper of a lead damper and a steel damper. This friction damper is used in the same way as in Fig. 2 and Fig. 5 between the panel and the beam, not only in the case of the braced structure but also in the case where the shear wall such as PC board is used for the column-beam frame. can do.

【0030】ところで、図1の(b)においては、高力
ボルト8のねじ部先端がナット9から僅かに出た程度に
描かれている。しかし、実際にはボルトの軸力の抜けを
小さくしておく配慮が必要があり、図示しないが、高力
ボルトを長締めボルトとしておくことが好ましい。因み
に、継手も図1に表されたクレビス構造のピン継手1
5,16に限らず、例えば摩擦接合継手といった公知の
他の種の継手も適宜採用できることは述べるまでもな
い。
In FIG. 1B, the tip of the threaded portion of the high-strength bolt 8 is drawn so as to slightly protrude from the nut 9. In practice, however, it is necessary to reduce the loss of the axial force of the bolt. Although not shown, it is preferable to use a high-strength bolt as a long tightening bolt. Incidentally, the joint is also a clevis structure pin joint 1 shown in FIG.
It goes without saying that the invention is not limited to 5 and 16, and other known types of joints, such as friction joints, can be used as appropriate.

【0031】図6は高力ボルト8,8を板材の長手方向
に複数本使用した例である。この場合には、滑り板材7
に設けられるスロット7aも摩擦板材6の丸孔6aもボ
ルトの本数に合わせて設けられることは言うまでもな
い。摩擦ダンパーの呼び長さLは例えば570mmとい
ったように図1の450mmよりは多少長くなるが、適
用される架構の大きさに比べれば無視し得る程度の増加
に過ぎない。
FIG. 6 shows an example in which a plurality of high strength bolts 8 are used in the longitudinal direction of the plate. In this case, the sliding plate 7
It is needless to say that both the slot 7a provided in the base plate and the round hole 6a of the friction plate 6 are provided in accordance with the number of bolts. Although the nominal length L of the friction damper is slightly longer than 450 mm in FIG. 1 such as 570 mm, for example, it is only a negligible increase compared to the size of the applied frame.

【0032】尚、図示しないがボルトを板材の幅方向に
2本配置したり、長手方向に配列されたボルト列8X
(図6を参照)を例えば2列並行して設置することもで
きる。何れにして、ボルトの本数に比例した大きさの動
的滑り耐力を備えさせておくことができる。言い替えれ
ば、本摩擦ダンパーがエネルギー吸収装置として要求さ
れる滑り耐力に対して摩擦面数を増やすことにより、一
摩擦面当たりの滑り耐力を小さく抑えておくことができ
る。その結果、一摩擦面で高耐力を期待する場合に比べ
れば、焼付き等の発生も可及的に少なくすることができ
る。
Although not shown, two bolts are arranged in the width direction of the plate material or a bolt row 8X arranged in the longitudinal direction.
(See FIG. 6) can also be installed, for example, in two rows in parallel. In any case, it is possible to provide a dynamic sliding resistance having a magnitude proportional to the number of bolts. In other words, by increasing the number of friction surfaces with respect to the sliding resistance required by the present friction damper as an energy absorbing device, the sliding resistance per friction surface can be kept small. As a result, the occurrence of seizure and the like can be reduced as much as possible as compared with the case where high proof stress is expected on one friction surface.

【0033】図6の例においてはスロットをより長くし
ておくことも可能であり、その場合には累積滑り量を大
きく確保できる利点がある。この場合、言うまでもない
が摩擦面の耐久性や安定性も向上する。因みに、板座金
はボルトそれぞれに設けられているが、板座金を1枚に
して2つのボルト孔を形成してもよく、その場合にはダ
ンパーの構成部品点数の抑制も図られる。
In the example of FIG. 6, it is possible to make the slot longer, and in this case, there is an advantage that a large accumulated slip amount can be secured. In this case, it goes without saying that the durability and stability of the friction surface are also improved. Incidentally, the plate washer is provided for each bolt. However, one plate washer may be used to form two bolt holes, in which case the number of components of the damper can be reduced.

【0034】図7は、摩擦板材6と滑り板材7を各1枚
増やした例である。即ち、図1における摩擦板材6を平
行な2枚の摩擦板材6A,6Aに置き換え、その間に滑
り板材と同じ構造の副滑り板材7Cを介在させた多重積
層構造となっている。これは図9を改良したダンパーと
いうことができ、板材は合計5枚であるが図7に示すよ
うに接触面12と13の間に符号21,22で表した接
触面が追加されることになる。
FIG. 7 shows an example in which one friction plate 6 and one slide plate 7 are added. That is, the friction plate member 6 in FIG. 1 is replaced with two parallel friction plate members 6A, 6A, and a multi-layer structure in which a sub-slide plate member 7C having the same structure as the slide plate member is interposed therebetween. This can be said to be a damper which is an improvement of FIG. 9, and the total number of plate members is five, but contact surfaces indicated by reference numerals 21 and 22 are added between the contact surfaces 12 and 13 as shown in FIG. 7. Become.

【0035】[0035]

【発明の効果】以上の説明から分かるように、本発明に
よれば、鋼板を重ねた簡素な構成であるにも拘わらず規
模の小さい地震時の小さな変形量から大地震による大き
な変形に至るまでを、1つのダンパーで対応してエネル
ギー吸収できるようになる。安価に製作できることは言
うまでもないが、メンテナンスも容易であり、その上、
ダンパー機能も検査しやすい。
As can be seen from the above description, according to the present invention, from a small deformation amount at the time of a small-scale earthquake to a large deformation due to a large earthquake, despite having a simple configuration in which steel plates are stacked. Can be correspondingly absorbed by one damper. It goes without saying that it can be manufactured at low cost, but it is easy to maintain and, moreover,
The damper function is also easy to inspect.

【0036】滑り耐力は同種従来例に比べて必然的に高
くなる。従って、1つの摩擦面当たりの耐力負担量を少
なくしておくこともできるため、摩擦面の耐久性を上げ
てダンパーとしての安定性を高く保っておくことも容易
となる。このようなダンパーを剛性の大きい筋違構造や
耐震壁と剛性の小さな鉄骨柱梁骨組の接合部に適用して
地震入力エネルギーを吸収させれば、鉄骨構造物の変形
抑制効果が飛躍的に増大する。又、応力制限機構として
の観点からは、骨組や筋違の損傷を可及的に防止するこ
ともできる。
The sliding resistance is inevitably higher than the conventional example of the same kind. Therefore, since the bearing load per friction surface can be reduced, it is easy to increase the durability of the friction surface and keep the stability as a damper high. If such a damper is applied to the joint between a high-strength braced structure or a shear-resistant wall and a low-rigidity steel beam-column frame to absorb seismic input energy, the effect of suppressing deformation of steel structures will increase dramatically. I do. Further, from the viewpoint of the stress limiting mechanism, damage to the skeleton and braces can be prevented as much as possible.

【0037】摩擦板材を2枚もしくはそれ以上使用する
場合には、その摩擦板材の間に副滑り板材を介在させる
ことにより、摩擦面を簡単に増やすことができる。逆に
言えば、各面での滑り耐力を小さく抑え、焼付き等のト
ラブルの発生も可及的に少なくしておくことが可能とな
る。
When two or more friction plates are used, the friction surface can be easily increased by interposing a sub-slide plate between the friction plates. Conversely, it is possible to keep the sliding resistance on each surface small, and to minimize the occurrence of troubles such as seizures.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明に係る架構用摩擦接合式エネルギー吸
収装置である摩擦ダンパーを示し、(a)は平面図、
(b)は(a)におけるB−B線断面図。
FIG. 1 shows a friction damper which is a friction-joining type energy absorbing device for a frame according to the present invention, wherein (a) is a plan view,
(B) is a sectional view taken along line BB in (a).

【図2】 剛性の小さな柱梁架構と剛性の大きい筋違構
造との接合部に適用された摩擦ダンパーの装着状態説明
図。
FIG. 2 is an explanatory diagram of a mounting state of a friction damper applied to a joint between a low rigidity beam-column frame and a high rigidity bracing structure.

【図3】 摩擦ダンパーの長手方向に作用する荷重とそ
れによる変形量の関係を表し、(a)は本発明に係るダ
ンパーの計測データ、(b)は同じ寸法を持つ従来技術
におけるダンパーの計測データ。
3A and 3B show the relationship between the load acting on the friction damper in the longitudinal direction and the amount of deformation caused by the load, wherein FIG. 3A shows measurement data of the damper according to the present invention, and FIG. data.

【図4】 剛性の低い柱梁架構が剛性の高い筋違に対し
て変形する間に摩擦ダンパーが伸縮作動している様子を
示す模式図。
FIG. 4 is a schematic diagram showing a state in which a friction damper expands and contracts while a low-rigidity beam-column frame is deformed by a high-rigidity bracing.

【図5】 1つの架構に2つのダンパーが採用されてい
る場合の取付図。
FIG. 5 is an installation diagram in a case where two dampers are employed in one frame.

【図6】 ボルトが長手方向において直列に配置されて
いる摩擦ダンパーであって、(a)は平面図、(b)は
断面図。
FIG. 6 is a friction damper in which bolts are arranged in series in a longitudinal direction, wherein (a) is a plan view and (b) is a cross-sectional view.

【図7】 重ね板構造体を構成する摩擦板材と滑り板材
をそれぞれ1枚追加したダンパーであって、(a)は平
面図、(b)は断面図。
FIGS. 7A and 7B are dampers to which one friction plate member and one slide plate member constituting the laminated plate structure are added, wherein FIG. 7A is a plan view and FIG.

【図8】 重ね板構造体からなる摩擦ダンパーの従来例
を示し、(a)は平面図、(b)は断面図。
8A and 8B show a conventional example of a friction damper having a laminated plate structure, wherein FIG. 8A is a plan view and FIG. 8B is a cross-sectional view.

【図9】 摩擦板材と滑り板材をそれぞれ1枚増やした
従来技術におけるダンパーの断面図。
FIG. 9 is a cross-sectional view of a damper according to the related art in which one friction plate member and one slide plate member are added.

【符号の説明】[Explanation of symbols]

1…摩擦ダンパー、5…重ね板構造体、6,6A…摩擦
板材、6a…丸孔、7,7A,7B…滑り板材、7C…
副滑り板材、7a…スロット、8…高力ボルト、10
A,10B…板座金。
DESCRIPTION OF SYMBOLS 1 ... Friction damper, 5 ... Laminated plate structure, 6, 6A ... Friction plate material, 6a ... Round hole, 7, 7A, 7B ... Sliding plate material, 7C ...
Sub slide plate material, 7a slot, 8 high strength bolt, 10
A, 10B ... plate washer.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 相互に面接触する滑り板材と摩擦板材と
からなる重ね板構造体と、該各板材を貫く孔に挿通され
て前記重ね板構造体を挟圧する高力ボルトとを備え、前
記滑り板材が摩擦板材との間で発生する摩擦力に抗して
変位することによりエネルギーを吸収し、鉄骨構造物の
減衰性能を発揮させることができるようになっている架
構用のエネルギー吸収装置において、前記高力ボルトは
そのヘッド側およびナット側にそれぞれ板座金を伴い、
高力ボルトの挿通する孔が板材の長手方向に延びて該高
力ボルトに相対変位可能な滑り板材が、前記高力ボルト
に相対変位不可能な摩擦板材と前記高力ボルトのヘッド
側もしくはナット側の板座金との間に配置されているこ
とを特徴とする架構用摩擦接合式エネルギー吸収装置。
1. A laminated plate structure comprising a sliding plate material and a friction plate material that are in surface contact with each other, and a high-strength bolt inserted into a hole passing through each of the plate materials to clamp the laminated plate structure, An energy absorbing device for a frame that can absorb energy by displacing the sliding plate material against the frictional force generated between the friction plate material and the damping performance of the steel structure. , The high-strength bolt has plate washers on its head side and nut side, respectively.
A hole through which the high-strength bolt is inserted extends in the longitudinal direction of the plate, and a sliding plate that can be displaced relative to the high-strength bolt is a friction plate that cannot be displaced relative to the high-strength bolt and a head side or nut of the high-strength bolt. A friction welding type energy absorbing device for a frame, which is disposed between a side plate washer and a side plate washer.
【請求項2】 前記摩擦板材が複数枚設けられ、該摩擦
板材の間には前記滑り板材と同じ構造の副滑り板材が介
在されていることを特徴とする請求項1に記載された架
構用摩擦接合式エネルギー吸収装置。
2. The frame according to claim 1, wherein a plurality of the friction plate members are provided, and a sub-slide plate member having the same structure as the slide plate member is interposed between the friction plate members. Friction welding type energy absorbing device.
JP2000058758A 2000-03-03 2000-03-03 Friction joint type energy absorbing device for frame Pending JP2001248324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000058758A JP2001248324A (en) 2000-03-03 2000-03-03 Friction joint type energy absorbing device for frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000058758A JP2001248324A (en) 2000-03-03 2000-03-03 Friction joint type energy absorbing device for frame

Publications (1)

Publication Number Publication Date
JP2001248324A true JP2001248324A (en) 2001-09-14

Family

ID=18579304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000058758A Pending JP2001248324A (en) 2000-03-03 2000-03-03 Friction joint type energy absorbing device for frame

Country Status (1)

Country Link
JP (1) JP2001248324A (en)

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JP2003239564A (en) * 2002-02-12 2003-08-27 Takenaka Komuten Co Ltd Damping method and device using rocking type curtain wall
KR20040021128A (en) * 2002-09-02 2004-03-10 주식회사 포스코 Rink device for adsorbing abnormal strain in flying shear
JP2009068668A (en) * 2007-09-18 2009-04-02 Kawaguchi Metal Industries Co Ltd Friction damper
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KR101240380B1 (en) * 2010-04-30 2013-03-08 주식회사 에이브이티 The friction damper for the earthquake-proof
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CN103896158A (en) * 2014-04-21 2014-07-02 上海海事大学 Friction energy dissipation and seismic mitigation device
CN105178184A (en) * 2015-06-04 2015-12-23 威胜利工程有限公司 Friction damper
KR101775498B1 (en) * 2009-10-02 2017-09-19 담프테크 에이/에스 Damping system
KR101828039B1 (en) * 2017-11-22 2018-02-09 (주)제이원산업 Multi-friction damper for structure
CN107905606A (en) * 2017-09-26 2018-04-13 同济大学 Adjustable friction damper
KR20220012026A (en) * 2020-07-22 2022-02-03 주식회사 벽산 Exterior pannel and combination structure of exterior pannel for improving seismic performance

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003239564A (en) * 2002-02-12 2003-08-27 Takenaka Komuten Co Ltd Damping method and device using rocking type curtain wall
KR20040021128A (en) * 2002-09-02 2004-03-10 주식회사 포스코 Rink device for adsorbing abnormal strain in flying shear
JP2009068668A (en) * 2007-09-18 2009-04-02 Kawaguchi Metal Industries Co Ltd Friction damper
KR101775498B1 (en) * 2009-10-02 2017-09-19 담프테크 에이/에스 Damping system
JP2011080486A (en) * 2009-10-02 2011-04-21 Damptech As Vibration damping structure
KR101240380B1 (en) * 2010-04-30 2013-03-08 주식회사 에이브이티 The friction damper for the earthquake-proof
CN103835387A (en) * 2014-03-17 2014-06-04 河北联合大学 Assembly-type frame structure joint friction damper
CN103835387B (en) * 2014-03-17 2016-03-09 河北联合大学 Assembling frame structure node frcition damper
CN103896158A (en) * 2014-04-21 2014-07-02 上海海事大学 Friction energy dissipation and seismic mitigation device
CN105178184A (en) * 2015-06-04 2015-12-23 威胜利工程有限公司 Friction damper
CN107905606A (en) * 2017-09-26 2018-04-13 同济大学 Adjustable friction damper
KR101828039B1 (en) * 2017-11-22 2018-02-09 (주)제이원산업 Multi-friction damper for structure
KR20220012026A (en) * 2020-07-22 2022-02-03 주식회사 벽산 Exterior pannel and combination structure of exterior pannel for improving seismic performance
KR102368909B1 (en) 2020-07-22 2022-03-03 주식회사 벽산 Exterior pannel and combination structure of exterior pannel for improving seismic performance

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