JP2000282587A - Brace structure in wooden building - Google Patents
Brace structure in wooden buildingInfo
- Publication number
- JP2000282587A JP2000282587A JP11121596A JP12159699A JP2000282587A JP 2000282587 A JP2000282587 A JP 2000282587A JP 11121596 A JP11121596 A JP 11121596A JP 12159699 A JP12159699 A JP 12159699A JP 2000282587 A JP2000282587 A JP 2000282587A
- Authority
- JP
- Japan
- Prior art keywords
- seismic isolation
- isolation means
- wooden building
- compression coil
- strut structure
- 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
Links
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】 本発明は、木造建築物にお
ける筋かい構造に係る技術分野に属する。TECHNICAL FIELD The present invention belongs to a technical field related to a bracing structure in a wooden building.
【０００２】[0002]
【従来技術】 従来、木造建築物における筋かい構造の
中に、地震発生時における横揺れ縦揺れを吸収緩和して
木造建築物の保全を図るベく、たとえば図１４に示すよ
うに構成したものがある。2. Description of the Related Art Conventionally, in a strut structure of a wooden building, a structure as shown in FIG. 14 has been used for absorbing and mitigating a roll and a pitch when an earthquake occurs to maintain the wooden building. There is.
【０００３】その従来の筋かい構造は、コンクリート基
礎Ｂ上の土台１と２階梁２とを約４５度に傾斜した筋か
い構造体Ｄにて連結し、ターンバックル構造からなるテ
ンション調整機構３と、その調整機構３を構成する一方
のスクリューロッド４端に止着され、かつ、２階梁２に
囲繞かけ止めされる帯状鋼板製で２ツ折り構造の連結体
５と、テンション調整機構３を構成する他方のスクリュ
ーロッド６の端部に着脱自在に連結される免震手段７
と、その免震手段を構成する作動ロッド８端に止着さ
れ、かつ、土台１に囲繞かけ止めされる帯状鋼板製で２
ツ折り構造の連結体９とにより構成している。In the conventional bracing structure, a foundation 1 and a second floor beam 2 on a concrete foundation B are connected by a bracing structure D inclined at about 45 degrees, and a tension adjusting mechanism 3 having a turnbuckle structure. A connecting member 5 made of a band-shaped steel plate and fixed to the end of one of the screw rods 4 constituting the adjusting mechanism 3 and surrounded by the second floor beam 2 and having a two-fold structure; Seismic isolation means 7 detachably connected to the end of the other screw rod 6 constituting
And a belt-shaped steel plate 2 fixed to the end of the operating rod 8 constituting the seismic isolation means and surrounded by the base 1.
The connector 9 has a folded structure.
【０００４】そして、特に、免震手段７に、たとえばゴ
ム板の集合体で形成して一定の弾性力を有する弾性体ａ
を配設し、地震発生時、地震による衝撃力を受けると、
その衝撃力を弾性体ａにより吸収・緩和できるようにし
ていた。[0004] In particular, the seismic isolation means 7 includes an elastic body a formed of, for example, an aggregate of rubber plates and having a constant elastic force.
When an earthquake occurs and receives an impact due to the earthquake,
The impact force can be absorbed and reduced by the elastic body a.
【０００５】[0005]
【発明が解決しようとする課題】 ところが、上述のよ
うな従来の筋かい構造では、免震手段７に弾性体ａを備
えるが、震度の異なる、たとえば大きな地震が発生した
ときには、それに応じて衝撃力を十分に吸収することが
できず、その結果、木造建築物の確実に保全することが
できないという課題があった。However, in the conventional strut structure as described above, the seismic isolation means 7 is provided with the elastic body a, but when a seismic intensity is different, for example, when a large earthquake occurs, an impact is applied accordingly. There was a problem that the power could not be sufficiently absorbed, and as a result, the wooden building could not be reliably maintained.
【０００６】[0006]
【課題を解決するための手段】 そこで、この課題を解
決すべく、請求項１に記載の発明は、たとえば以下の図
面を用いて説明する実施の形態のとおり、土台側の下桁
又は下梁と階上側の上桁又は上梁とを、中途部に免震手
段１７を備える長手の筋かい構造体Ａにより結合する木
造建築物における筋かい構造において、前記免震手段１
７に、地震の衝撃力の強さに応じてバネ力の異なる複数
の圧縮コイルバネ３０，３１を、前記筋かい構造体Ａの
長手方向に圧縮可能に、軸心周りに多段に重ねて設けた
ことを特徴とする。Means for Solving the Problems In order to solve this problem, the invention according to claim 1 is, for example, according to an embodiment described with reference to the drawings below, in which a lower girder or a lower beam on a base side is provided. And the upper girder or the upper beam on the upper floor are connected by a longitudinal bracing structure A provided with a seismic isolating means 17 in the middle of the bracing structure in a wooden building.
7, a plurality of compression coil springs 30 and 31 having different spring forces according to the magnitude of the impact force of the earthquake are provided in multiple stages around the axis so as to be compressible in the longitudinal direction of the bracing structure A. It is characterized by the following.
【０００７】請求項２に記載の発明は、請求項１に記載
の木造建築物における筋かい構造において、たとえば以
下の図面を用いて説明する実施の形態のとおり、前記各
圧縮コイルバネ３０，３１間に、その間を仕切る仕切材
３５を介在させてなることを特徴とする。According to a second aspect of the present invention, there is provided a brace structure for a wooden building according to the first aspect, wherein the compression coil springs 30 and 31 are provided between the compression coil springs 30 and 31 as in an embodiment described with reference to the following drawings. In addition, a partition member 35 for partitioning between them is interposed.
【０００８】請求項３に記載の発明は、たとえば以下の
図面を用いて説明する実施の形態のとおり、土台側の下
桁又は下梁と階上側の上桁又は上梁とを、中途部に免震
手段５５を備える長手の筋かい構造体Ａにより結合する
木造建築物における筋かい構造において、それぞれ中間
側を厚肉に形成するとともにその厚肉部６０ａ，６１ａ
側から両端側に漸次薄肉に形成した２枚の半円形板バネ
６０，６１を用い、それら板バネ６０，６１を両端の薄
肉部６０ｂ，６１ｂ側で互いに連結して前記免震手段５
５を環状に構成し、この免震手段における一側の板バネ
６０をその厚肉部６０ａで前記筋かい構造体Ａの土台側
端部に固着する一方、他側の板バネ６１をその厚肉部６
０１ａで前記筋かい構造体の階上側端部に固着したこと
を特徴とする。According to a third aspect of the present invention, a lower girder or lower girder on the base and an upper girder or upper girder on the floor are provided in the middle as in an embodiment described with reference to the following drawings. In the brace structure of the wooden building connected by the long brace structure A having the seismic isolation means 55, the middle side is formed to be thick and the thick portions 60a and 61a are formed.
Two semicircular leaf springs 60, 61 formed gradually thinner from the side to both ends, and these leaf springs 60, 61 are connected to each other at the thin portions 60b, 61b at both ends, and the seismic isolation means 5
5, the leaf spring 60 on one side of the seismic isolation means is fixed to the base side end of the brace structure A at its thick portion 60a, while the leaf spring 61 on the other side is thickened. Meat part 6
At 01a, the bracing structure is fixed to the upper end of the floor.
【０００９】[0009]
【発明の実施の形態】 以下、図面を参照して発明の実
施の形態について詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００１０】図１に、この発明の木造建築物における筋
かい構造の一例を示す。この例では、図中下側のコンク
リート基礎１０上にゴム製土台保護板（図示省略）を介
して付設された土台（下梁）１１と、２階梁（上梁）１
２とを、４５度に傾斜させた筋かい構造体Ａで連結した
構造を示す。筋かい構造体Ａは、ターンバックル構造か
らなるテンション調整機構１３と、該テンション調整機
構を構成する一方のスクリューロッド１４端に止着さ
れ、かつ、２階梁１２に囲繞かけ止めされる帯状鋼板製
で２ツ折り構造の連結体１５と、該テンション調整機構
を構成する他方のスクリューロッド１６の端部に着脱自
在に連結した免震手段１７と、該免震手段１７に備える
作動ロッド１８端に止着され、かつ、前記土台１１に囲
撓かけ止めされる帯状鋼板製で２ツ折り構造の連結体１
９とによって構成される。FIG. 1 shows an example of a brace structure in a wooden building of the present invention. In this example, a base (lower beam) 11 and a second-floor beam (upper beam) 1 provided on a concrete foundation 10 on the lower side in the figure via a rubber base protection plate (not shown).
2 is connected by a strut structure A inclined at 45 degrees. The bracing structure A includes a tension adjusting mechanism 13 having a turnbuckle structure, and a belt-shaped steel plate fixed to one end of one of the screw rods 14 constituting the tension adjusting mechanism and stopped by being surrounded by the second floor beam 12. And a seismic isolation means 17 detachably connected to an end of another screw rod 16 constituting the tension adjusting mechanism, and an end of an operating rod 18 provided in the seismic isolation means 17 And a two-folded structure made of a strip-shaped steel plate which is fixed to the base and is prevented from bending and surrounding the base 11.
9.
【００１１】次に、この筋かい構造体Ａの架設工法につ
いて説明すると、土台１１と２階梁１２の筋かい構造体
Ａの架設位置に、予じめ正面形状が直角三角形状の切欠
き２０，２１を刻設し、この切欠き２０，２１に夫々連
結体１５，１９を掛け回しておく。そして、上方の連結
体１５の両端をテンション調整機構１３のスクリューロ
ッド１４端にボルト止めするとともに、下方の連結体１
９の両端を作動ロッド１８端にボルト止めする。そうし
て、ターンバックル構造からなるテンション調整機構１
３を作動せしめて筋かい構造体Ａに適度のテンションを
付与して取り付けを終る。Next, a method of erection of the bracing structure A will be described. A notch 20 whose front shape is a right-angled triangle is previously provided at the erection position of the stiffening structure A of the base 11 and the second floor beam 12. , 21 are engraved, and the connectors 15, 19 are hung around the notches 20, 21, respectively. Then, both ends of the upper connector 15 are bolted to the ends of the screw rods 14 of the tension adjusting mechanism 13 and the lower connector 1
9 are bolted to the end of the operating rod 18. Then, the tension adjusting mechanism 1 having a turnbuckle structure
3 is actuated to give an appropriate tension to the braced structure A, and the mounting is completed.
【００１２】また、連結体１５には、図示省略したが、
その両端に案内長孔を設け、上端側の案内長孔は２階梁
１２の表裏面に対応し、この案内長孔に２階梁１２を貫
通したボルト２３が挿入され、該ボルト２３に対して連
結体１５が、案内長孔を介して長手軸線方向に摺動しう
るように構成する。また、連結体１５の下端側の案内長
孔は土台１１と２階梁１２間に架設した柱２４の表裏面
に対応し、同様に柱２４を貫通したボルト２５が挿入さ
れ、該ボルトに対して連結体１５が、案内長孔を介して
長手軸線方向に摺動できるように構成する。詳細な構成
の説明は省略するが、同様にして、連結体１９にも、そ
の両端に、前記と同様の作用をなす案内長孔を設ける。Although not shown, the connecting body 15
A guide slot is provided at both ends thereof, and the guide slot at the upper end side corresponds to the front and back surfaces of the second floor beam 12, and a bolt 23 penetrating the second floor beam 12 is inserted into the guide long hole. The connecting body 15 is configured to be slidable in the longitudinal axis direction via the guide slot. The guide slots at the lower end side of the connecting body 15 correspond to the front and back surfaces of a column 24 erected between the base 11 and the second floor beam 12, and a bolt 25 penetrating the column 24 is inserted in the same manner. Thus, the connecting body 15 is configured to be slidable in the longitudinal axis direction through the guide slot. Although a detailed description of the configuration is omitted, similarly, the connecting body 19 is provided with a guide elongated hole having the same function as that described above at both ends thereof.
【００１３】ところで、図２，図３および図４に、前記
免震手段１７の詳細を示す。この免震手段１７は、前記
作動ロッド１８の上端に螺子部２６を形成するととも
に、この螺子部２６の上端にナット２７を螺合してお
く。更に、作動ロッド１８の上端には、ナット２７に当
接する平面形状が長方形状の押圧作用板２８を上下動可
能に設け、この押圧作用板２８と同形状で、かつ、これ
と対向的に作動ロッド１８を挿入して支持板２９を設
け、その支持板２９と押圧作用板２８との間に２つの圧
縮コイルバネ３０，３１を介装する。FIGS. 2, 3 and 4 show the details of the seismic isolation means 17. FIG. The seismic isolation means 17 has a screw portion 26 formed at the upper end of the operating rod 18 and a nut 27 screwed to the upper end of the screw portion 26. Further, at the upper end of the operating rod 18, a pressing action plate 28 having a rectangular planar shape that comes into contact with the nut 27 is provided so as to be vertically movable, and has the same shape as the pressing action plate 28 and operates in opposition to this. A support plate 29 is provided by inserting the rod 18, and two compression coil springs 30 and 31 are interposed between the support plate 29 and the pressing plate 28.
【００１４】一方、押圧作用板２８と支持板２９の相対
向する両辺中央部に切欠き凹部３２，３３を設けるとと
もに、スクリューロッド１６の下端に、２又構造のアー
ム部３４ａを有する支持体３４を螺着せしめ、この両ア
ーム部３４ａの垂直辺部に押圧作用板２８と支持板２９
に設けた両切欠き凹部３２，３３を、夫々スライド可能
に係合させてなる。また、両アーム部３４ａの垂直辺部
の下端に、それぞれ螺子部３８を形成するとともに、両
螺子部３８にそれぞれ２つのナット３６，３７を螺合し
て支持板２９を挟んで固定する。On the other hand, notches 32 and 33 are provided at the center of both sides of the pressing plate 28 and the supporting plate 29 which face each other, and a support 34 having a bifurcated arm 34a at the lower end of the screw rod 16 is provided. The pressing plate 28 and the supporting plate 29 are attached to the vertical sides of the arms 34a.
The two notched concave portions 32 and 33 provided in the above are slidably engaged with each other. Further, screw portions 38 are formed at the lower ends of the vertical sides of both arm portions 34a, respectively, and two nuts 36, 37 are screwed to both screw portions 38, respectively, and fixed with support plate 29 therebetween.
【００１５】上述した筋かい構造では、前記２つの圧縮
コイルバネ３０，３１として、地震の衝撃力の強さに応
じてバネ力の異なるものを用い、それら圧縮コイルバネ
３０，３１を前記筋かい構造体Ａの長手方向に圧縮可
能、詳しくは、作動ロッド１８の軸周りに同心状に設け
る。たとえば内側の圧縮コイルバネ３０としては、外側
の圧縮コイルバネ３１より長くて、比較的多く発生する
弱い地震の発生時に受ける衝撃力に応じたバネ力を有す
る圧縮コイルバネを用いる。そして、この内側の圧縮コ
イルバネ３０を、その上下両端をそれぞれ押圧作用板２
８の下面と支持板２９の上面に当接させて設ける。一
方、外側の圧縮コイルバネ３１としては、稀に発生する
比較的強い地震の発生時に受ける衝撃力に応じたバネ力
を有し、かつ圧縮コイルバネ３０より短尺な圧縮コイル
バネを用いる。そして、その外側の圧縮コイルバネ３１
の下端を支持板２９上にフリーな状態で載せて設ける。In the strut structure described above, the two compression coil springs 30, 31 having different spring forces in accordance with the magnitude of the impact force of the earthquake are used, and these compression coil springs 30, 31 are connected to the strut structure. A is compressible in the longitudinal direction of A, and more specifically, is provided concentrically around the axis of the operating rod 18. For example, as the inner compression coil spring 30, a compression coil spring that is longer than the outer compression coil spring 31 and has a spring force corresponding to the impact force received when a relatively large amount of weak earthquake occurs is used. The upper and lower ends of the inner compression coil spring 30 are respectively pressed by the pressing plate 2.
8 is provided in contact with the lower surface of the support plate 29 and the upper surface of the support plate 29. On the other hand, as the outer compression coil spring 31, a compression coil spring having a spring force corresponding to an impact force received when a relatively strong relatively rare earthquake occurs and shorter than the compression coil spring 30 is used. Then, the outer compression coil spring 31
Is provided on the support plate 29 in a free state.
【００１６】また、図示の例では、内外圧縮コイルバネ
３０，３１間に、その間を仕切る筒状構造の仕切材３５
を介在させる。仕切材３５としては、たとえば油を含ん
だ布や紙製等のシートを用いる。この仕切板３５は、両
圧縮バネ３０，３１の噛み合いをを防止するものであ
る。In the illustrated example, a cylindrical partition member 35 is provided between the inner and outer compression coil springs 30 and 31 to partition between them.
Intervene. As the partition member 35, for example, a sheet made of oil-containing cloth or paper is used. The partition plate 35 prevents the compression springs 30 and 31 from meshing with each other.
【００１７】なお、この例では、図２に示すように、支
持板２９の下側で作動ロッド１８の螺子部２６にナット
４１，４２を螺合してダブルナット構造にして、内圧縮
コイルバネ３０の最大バネ力を調整できるようにしてい
る。In this example, as shown in FIG. 2, nuts 41 and 42 are screwed into the screw portion 26 of the operating rod 18 below the support plate 29 to form a double nut structure, and the inner compression coil spring 30 is formed. The maximum spring force can be adjusted.
【００１８】そして、上述した筋かい構造では、たとえ
ば比較的弱い地震が発生したとき、筋かい構造体Ａに横
揺れ縦揺れによる衝撃力を受けると、押圧作用板２８と
支持板２９間で内側の圧縮コイルバネ３０が圧縮し、衝
撃力を吸収・緩和する。In the above-described strut structure, for example, when a relatively weak earthquake occurs, when the striking structure A receives an impact force due to the rolling and pitching, the inner side between the pressing action plate 28 and the supporting plate 29 is formed. The compression coil spring 30 is compressed to absorb and reduce the impact force.
【００１９】一方、たとえば比較的強い地震が発生した
とき、筋かい構造体Ａに横揺れ縦揺れによる衝撃力を受
けると、押圧作用板２８と支持板２９間で内側の圧縮コ
イルバネ３０が圧縮するとともに、外側の圧縮コイルバ
ネ３１も圧縮し、この強い衝撃力を吸収・緩和する。On the other hand, for example, when a relatively strong earthquake occurs, when the striking structure A receives an impact force due to the horizontal and vertical swings, the inner compression coil spring 30 is compressed between the pressing action plate 28 and the support plate 29. At the same time, the outer compression coil spring 31 is also compressed, absorbing and relaxing this strong impact force.
【００２０】なお、図示した免震手段１７には、バネ力
の異なる２つの圧縮コイルバネ３０，３１を設けたが、
地震の衝撃力の強さに応じて、バネ力の異なる３以上の
圧縮コイルバネを圧縮可能に軸心周りに同心状に設け
て、さらに地震強さに更に多段に対応できるようにする
こともできる。Although the illustrated seismic isolation means 17 is provided with two compression coil springs 30 and 31 having different spring forces,
According to the strength of the impact of the earthquake, three or more compression coil springs having different spring forces may be provided concentrically around the axis so as to be compressible, so that it can respond to the earthquake strength in more stages. .
【００２１】また、前述した筋かい構造体Ａでは、連結
体１５を、図５に示すように、２階梁１２の表裏面及び
上面に掛け回し囲繞した２ツ折り構造の帯鋼板材料より
形成し、その連結体１５の下端をスクリューロッド１４
の上端に固定した構造とすることもできる。図中３９は
連着ボルトである。In the above-described bracing structure A, as shown in FIG. 5, the connecting body 15 is formed of a two-folded band steel sheet material which is wrapped around the front and back surfaces and the upper surface of the second floor beam 12. And the lower end of the connecting body 15 is connected to the screw rod 14
May be fixed to the upper end of the frame. In the drawing, reference numeral 39 denotes a connecting bolt.
【００２２】さらに、そのように２ツ折り構造の帯鋼板
材料で形成して連結体１５をスクリューロッド１４に固
定する場合は、たとえば図６〜図８を用いて説明する構
造にするとよい。つまり、２階梁１２に掛け回し囲繞し
た２ツ折り構造の連結体１５の向かい合う下端１５ａ側
を、図７でも示す四角い止めリング４０に嵌め込み、そ
の止めリングで束ねて重ね合わせて、スクリューロッド
１４の上端に固定する。このとき、連結体１５の向かい
合う下端１５ａの一部を、図８（ａ）に示すように、パ
ンチで押し抜きして矩形状の抜け止め部１５ｂを互いに
外向きに開いて設け、止めリング４０の抜け落ちを防止
する。抜け止め部１５ｂは、図８（ｂ）に示すような三
角形状など、各種形状に形成することもできる。Further, in the case where the connecting member 15 is fixed to the screw rod 14 by using a two-folded strip steel plate material, the structure described with reference to FIGS. 6 to 8 may be used. That is, the opposed lower end 15a side of the two-fold structure connecting body 15 that is wrapped around the second floor beam 12 is fitted into a square retaining ring 40 shown in FIG. To the top of At this time, as shown in FIG. 8A, a part of the lower end 15a facing the connecting body 15 is punched out by a punch to form rectangular retaining portions 15b opened outward from each other. To prevent falling off. The retaining portion 15b can be formed in various shapes such as a triangular shape as shown in FIG.
【００２３】なお、前述した例では、図１において２個
の筋かい構造体Ａを八の字状に架設し、左右のバランス
が得られるようにしたが、２個の筋かい構造体Ａを×印
状に架設することもあるので、図示の筋かい架設構造に
特定されることはない。In the above-described example, two strut structures A are laid in an eight-shape in FIG. 1 so that a right-left balance can be obtained. X Since it may be erected in the shape of a sign, it is not limited to the illustrated erection structure.
【００２４】次に、図９に、下側のコンクリート基礎１
０上にゴム製の土台保護板４３を介して付設された土台
１１と、２階梁１２との間に、鉛直姿勢にて筋かい構造
体Ａを架設した例を示す。この例では、前述したテンシ
ョン調整機構１３及び免震手段１７をそのまま具有して
いるが、テンション調整機構１３と２階梁１２の連結手
段及び免震手段１７と土台１１との連結手段が異る。Next, FIG. 9 shows the lower concrete foundation 1.
An example is shown in which a bracing structure A is erected in a vertical posture between a base 11 attached to a base 11 via a rubber base protection plate 43 and a second floor beam 12. In this example, the tension adjusting mechanism 13 and the seismic isolation means 17 described above are provided as they are, but the coupling means between the tension adjusting mechanism 13 and the second floor beam 12 and the coupling means between the seismic isolation means 17 and the base 11 are different. .
【００２５】即ち、テンション調整機構１３における上
方のスクリューロッド１４を２階梁１２に形成した上下
方向の貫通孔４４に挿通し、該スクリューロッド１４の
上端にゴム付き座金４５を介してナット４６を螺合し、
スクリューロッド１４を２階梁１２に連結せしめ、又前
記免震手段１７における作動ロッド１８の下端を、土台
１１の表裏面及び下面に掛け回し囲繞した２ツ折り構造
の帯鋼板材料よりなる連結体２５の上端と固定したもの
である。この例も、前記テンション調整機構１３を作動
して筋かい構造体Ａに適度のテンションを付与し、前記
免震手段１７により大きさの異なる地震に対応できるよ
うにしたものである。That is, the upper screw rod 14 of the tension adjusting mechanism 13 is inserted into a vertical through hole 44 formed in the second floor beam 12, and a nut 46 is attached to the upper end of the screw rod 14 via a washer 45 with rubber. Screw
A connecting body made of a two-folded strip steel material in which the screw rod 14 is connected to the second floor beam 12 and the lower end of the operating rod 18 in the seismic isolation means 17 is wrapped around the front and back and lower surfaces of the base 11. 25 and fixed to the upper end. In this example, too, the tension adjusting mechanism 13 is operated to apply an appropriate tension to the bracing structure A, so that the seismic isolation means 17 can cope with earthquakes of different sizes.
【００２６】図１０は、前記図９に示した鉛直姿勢の筋
かい構造体Ａの更なる変形例であって、次のように構成
されている。即ち、前記コンクリート基礎１０中に、圧
縮コイルバネよりなるアンカー体５０を下端に挿通支持
したアンカーボルト５１を垂設し、このアンカーボルト
５１は前記土台保護板４３及び土台１１を貫通するとと
もに、アンカーボルト５１の上端部を、下半分を土台１
１に支持させた外面が六角形状の継ぎ螺筒５２に螺合連
結させ、該継ぎ螺筒５２の上端部に作動ロッド１８の下
端部を螺合連着せしめたものである。図中５３はガイド
パイプである。FIG. 10 is a further modified example of the brace structure A in the vertical posture shown in FIG. 9 and is configured as follows. That is, an anchor bolt 51 having an anchor body 50 made of a compression coil spring inserted and supported at the lower end thereof is suspended in the concrete foundation 10, and this anchor bolt 51 penetrates through the base protection plate 43 and the base 11, and an anchor bolt 51 is provided. The upper end of 51 and the lower half
The outer surface supported by 1 is screwed and connected to a hexagonal connecting screw cylinder 52, and the lower end of the operating rod 18 is screwed and connected to the upper end of the connecting screw cylinder 52. In the figure, 53 is a guide pipe.
【００２７】さて、図１１に、上述した免震手段１７に
代えて他の免震手段５５を備える、この発明による木造
建築物の筋かい構造の例を示す。この免震手段５５は、
上述したと同様に、ターンバックル構造のテンション調
整機構１３と、前記した連結体１９との間に配設し、上
部側を、テンション調整機構１３とそのスクリューロッ
ド５６を介して連結し、下部側を、前記連結体１９に作
動ロッド５７を介して連結した構成とする。FIG. 11 shows an example of a bracing structure for a wooden building according to the present invention, which is provided with another seismic isolation means 55 in place of the seismic isolation means 17 described above. This seismic isolation means 55
As described above, the tension adjusting mechanism 13 having a turnbuckle structure is disposed between the connecting member 19 and the upper side is connected to the tension adjusting mechanism 13 via the screw rod 56, and the lower side is connected to the lower side. Are connected to the connecting body 19 via an operating rod 57.
【００２８】そして、この免震手段５５は、半円形に曲
げた２枚の帯状板バネ６０，６１を用いる。それら板バ
ネ６０，６１は、それぞれ中間側を厚肉に形成するとと
もにその厚肉部６０ａ，６１ａ側から両端側に漸次薄肉
に形成している。そうして、両端の薄肉部６０ｂ，６１
ｂ側を、図１２に示すような周知の蝶番構造によりピン
６２で互いに連結し、図１１に示すように免震手段５５
を環状に構成する。The seismic isolation means 55 uses two band-shaped leaf springs 60 and 61 bent in a semicircular shape. Each of the leaf springs 60 and 61 has a thick middle portion, and is gradually thinner from both sides of the thick portions 60a and 61a. Then, the thin portions 60b, 61 at both ends
The b side is connected to each other by a pin 62 by a well-known hinge structure as shown in FIG. 12, and as shown in FIG.
Is formed in an annular shape.
【００２９】しかして、免震手段５５における図中上側
の板バネ６０を厚肉部６０ａでテンション調整機構１３
のスクリューロッド５６下端（筋かい構造体Ａの階上側
端部）に固着する一方、下側の板バネ６１を厚肉部６１
ａで連結体１９の作動ロッド５７上端（筋かい構造体Ａ
の土台側端部）に固着してなる。The leaf spring 60 on the upper side in the figure of the seismic isolation means 55 is connected to the tension adjusting mechanism 13 by the thick portion 60a.
To the lower end of the screw rod 56 (upper floor end of the bracing structure A), while attaching the lower leaf spring 61 to the thick portion 61.
a at the upper end of the operating rod 57 of the connector 19
On the base side).
【００３０】そして、この免震手段５５を備える筋かい
構造では、比較的弱い地震が発生したとき、前記筋かい
構造体Ａに横揺れ縦揺れによる衝撃力を受けると、免震
手段５５が板バネ６０，６１の薄肉部６０ｂ，６１ｂに
て弾性的に撓んで、衝撃力を吸収緩和する。In the strut structure provided with the seismic isolation means 55, when a relatively weak earthquake occurs, when the strut structure A receives an impact force due to the roll and the pitch, the seismic isolation means 55 becomes a plate. The springs 60, 61 are elastically bent by the thin portions 60b, 61b to absorb and reduce the impact force.
【００３１】一方、たとえば比較的強い地震が発生した
ときは、前記筋かい構造体Ａに横揺れ縦揺れによる衝撃
力を受けると、図１３（ａ），（ｂ）に示すように、免
震手段５５が、振動に応じて、板バネ６０，６１の薄肉
部６０ｂ，６１ｂとともに厚肉部６０ａ，６１ａでも弾
性的に撓んで、この強い衝撃力を吸収緩和する。On the other hand, for example, when a relatively strong earthquake occurs, when the strut structure A receives an impact force due to the roll and the pitch, as shown in FIGS. The means 55 elastically bends not only the thin portions 60b, 61b of the leaf springs 60, 61 but also the thick portions 60a, 61a in response to the vibration, thereby absorbing and relaxing this strong impact force.
【００３２】[0032]
【発明の効果】 上述のように本発明の構造によれば、
次のような効果が得られる。According to the structure of the present invention as described above,
The following effects can be obtained.
【００３３】請求項１に記載の発明によれば、筋かい構
造体に備える免震手段に、地震の衝撃力の強さに応じて
バネ力の異なる複数の圧縮コイルバネを、筋かい構造体
の長手方向に圧縮可能に軸心周りに重ねて多段に設ける
ため、震度の異なる、たとえば大きな地震が発生したと
きでも、それに応じて段階的に衝撃力を十分に吸収緩和
することができ、その結果、木造建築物の確実に保全す
ることができる。According to the first aspect of the present invention, a plurality of compression coil springs having different spring forces according to the magnitude of the impact force of the earthquake are provided to the seismic isolation means provided in the bracing structure. Because it is provided in multiple stages stacked around the axis so that it can be compressed in the longitudinal direction, even when a large earthquake with a different seismic intensity, for example, a large earthquake occurs, the impact force can be sufficiently absorbed and alleviated gradually in accordance with it, as a result , Can surely preserve wooden buildings.
【００３４】請求項２に記載の発明によれば、加えて、
各圧縮コイルバネ間に、その間を仕切る仕切材を介在さ
せる構成とするため、互いに圧縮コイルバネが干渉し合
って圧縮作用が有効に発揮できなくなることを防止する
ことができる。According to the second aspect of the present invention,
Since a partition member is provided between the compression coil springs to separate the compression coil springs from each other, it is possible to prevent the compression coil springs from interfering with each other and preventing the compression action from being effectively exerted.
【００３５】請求項３に記載の発明によれば、筋かい構
造体に備える免震手段を、それぞれ中間側を厚肉に形成
するとともにその厚肉部側から両端側に漸次薄肉に形成
した２枚の半円形板バネを用い、それら板バネを両端の
薄肉部側で互いに連結して環状に構成し、この免震手段
における一側の板バネをその厚肉部で筋かい構造体の土
台側端部に固着する一方、他側の板バネをその厚肉部で
階上側端部に固着した構成にすることにより、震度の異
なる、たとえば大きな地震が発生したときでも、それに
応じて板バネをその厚肉部と薄肉部とで段階的に衝撃力
を吸収緩和することができ、その結果、木造建築物の確
実に保全することができる。According to the third aspect of the present invention, the seismic isolation means provided on the bracing structure is formed such that the middle side is formed to be thick and the thickness is gradually reduced from the thick part to both ends. Using a pair of semicircular leaf springs, the leaf springs are connected to each other at the thin portions at both ends to form an annular shape, and one leaf spring in the seismic isolation means is mounted on a base of a bracing structure with its thick portions. By fixing the leaf spring on the other side to the upper end of the floor with a thicker portion while being fixed to the side end, even when a large earthquake occurs, for example, when a large earthquake occurs, the leaf spring can be adjusted accordingly. The impact force can be gradually absorbed and reduced by the thick portion and the thin portion, and as a result, the wooden building can be reliably maintained.
【図１】この発明による筋かい構造の実施の形態を示す
構成説明図である。FIG. 1 is a configuration explanatory view showing an embodiment of a bracing structure according to the present invention.
【図２】 その筋かい構造の免震手段を示す拡大正面図
である。FIG. 2 is an enlarged front view showing the seismic isolation means having the bracing structure.
【図３】 図２で示す免震手段を図中下方から見て一部
を断面にして示す構成説明図である。FIG. 3 is a configuration explanatory view showing a part of the seismic isolation unit shown in FIG. 2 as viewed from below in a sectional view.
【図４】 図２で示す免震手段を図中上方から見て一部
を断面にして示す構成説明図である。FIG. 4 is a configuration explanatory view showing a partial cross section of the seismic isolation means shown in FIG. 2 as viewed from above in the figure.
【図５】 図１に示す例の一部を変更した他の実施の形
態を示す部分断面図である。FIG. 5 is a partial cross-sectional view showing another embodiment in which a part of the example shown in FIG. 1 is modified.
【図６】 図５に示す例のさらに他の実施の形態を示す
部分断面図である。FIG. 6 is a partial sectional view showing still another embodiment of the example shown in FIG. 5;
【図７】 図６中に示す止めリングの斜視図である。FIG. 7 is a perspective view of a retaining ring shown in FIG. 6;
【図８】 （ａ）は、その止めリングの抜け止め部を示
す斜視図、（ｂ）は、その抜け止め部の実施の形態を示
す斜視図である。FIG. 8A is a perspective view illustrating a retaining portion of the retaining ring, and FIG. 8B is a perspective view illustrating an embodiment of the retaining portion.
【図９】 この発明による筋かい構造体を鉛直に配置し
た場合の一部切欠側面図である。FIG. 9 is a partially cutaway side view when the bracing structure according to the present invention is arranged vertically.
【図１０】 その筋かい構造体を鉛直に配置した場合の
他の実施の形態を示す一部切欠側面図である。FIG. 10 is a partially cutaway side view showing another embodiment in which the bracing structure is arranged vertically.
【図１１】 図１に示す例の免震手段を変更したさらに
別の実施の形態を示す拡大正面図である。FIG. 11 is an enlarged front view showing still another embodiment in which the seismic isolation means of the example shown in FIG. 1 is changed.
【図１２】 その免震手段の板バネの連結部分の構成を
示す構成図である。FIG. 12 is a configuration diagram showing a configuration of a connecting portion of a leaf spring of the seismic isolation means.
【図１３】 （ａ），（ｂ）は各々その免震手段で衝撃
を吸収する状態を説明する状態説明図である。FIGS. 13A and 13B are state explanatory diagrams each illustrating a state in which the seismic isolation means absorbs an impact.
【図１４】 従来の筋かい構造を示す構成説明図であ
る。FIG. 14 is a configuration explanatory view showing a conventional bracing structure.
Ａ 筋かい構造体 １１ 土台 １２ ２階梁 １７，５５ 免震手段 ３０，３１ 圧縮コイルバネ ３５ 仕切材 ６０，６１ 板バネ ６０ａ，６１ａ 厚肉部 ６０ｂ，６１ｂ 薄肉部 A Brace structure 11 Base 12 Second floor beam 17,55 Seismic isolation means 30,31 Compression coil spring 35 Partition material 60,61 Leaf spring 60a, 61a Thick part 60b, 61b Thin part
Claims (3)
は上梁とを、中途部に免震手段を備える長手の筋かい構
造体により結合する木造建築物における筋かい構造にお
いて、 前記免震手段に、地震の衝撃力の強さに応じてバネ力の
異なる複数の圧縮コイルバネを、前記筋かい構造体の長
手方向に圧縮可能に、軸心周りに多段に重ねて設けたこ
とを特徴とする木造建築物における筋かい構造。1. A strut structure for a wooden building in which a lower girder or lower beam on the base side and an upper girder or upper beam on the upper floor are connected by a longitudinal strut structure provided with seismic isolation means in the middle part. In the seismic isolation means, a plurality of compression coil springs having different spring forces according to the magnitude of the impact force of the earthquake are provided in multiple stages around the axis so as to be compressible in the longitudinal direction of the bracing structure. A strut structure in a wooden building, characterized in that:
切る仕切材を介在させてなることを特徴とする請求項１
に記載の木造建築物における筋かい構造。2. The apparatus according to claim 1, wherein a partition member for partitioning the compression coil springs is interposed between the compression coil springs.
Brace structure in a wooden building described in.
は上梁とを、中途部に免震手段を備える長手の筋かい構
造体により結合する木造建築物における筋かい構造にお
いて、 それぞれ中間側を厚肉に形成するとともにその厚肉部側
から両端側に漸次薄肉に形成した２枚の半円形板バネを
用い、それら板バネを両端の薄肉部側で互いに連結して
前記免震手段を環状に構成し、この免震手段における一
側の板バネをその厚肉部で前記筋かい構造体の土台側端
部に固着する一方、他側の板バネをその厚肉部で前記筋
かい構造体の階上側端部に固着したことを特徴とする木
造建築物における筋かい構造。3. A strut structure in a wooden building in which a lower girder or lower beam on the base side and an upper girder or upper beam on the upper floor are connected by a longitudinal strut structure provided with seismic isolation means in the middle part. Using two semi-circular leaf springs, each of which has a thick intermediate portion and is gradually thinned from the thick portion side to both end portions, and connects these leaf springs to each other at the thin portion portions at both ends. The seismic isolation means is formed in an annular shape, and one side leaf spring of the seismic isolation means is fixed to the base side end of the brace structure at its thick portion, while the other side leaf spring is fixed to the thick portion. A strut structure in a wooden building, wherein the strut structure is fixed to an upper end of a floor of the strut structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11121596A JP2000282587A (en) | 1999-01-26 | 1999-04-28 | Brace structure in wooden building |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1703099 | 1999-01-26 | ||
| JP11-17030 | 1999-01-26 | ||
| JP11121596A JP2000282587A (en) | 1999-01-26 | 1999-04-28 | Brace structure in wooden building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000282587A true JP2000282587A (en) | 2000-10-10 |
Family
ID=26353487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11121596A Pending JP2000282587A (en) | 1999-01-26 | 1999-04-28 | Brace structure in wooden building |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000282587A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007016538A (en) * | 2005-07-11 | 2007-01-25 | Mokken Giken Kk | Vibration damper built in building |
-
1999
- 1999-04-28 JP JP11121596A patent/JP2000282587A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007016538A (en) * | 2005-07-11 | 2007-01-25 | Mokken Giken Kk | Vibration damper built in building |
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