JP2576221B2 - Structure connection structure - Google Patents
Structure connection structureInfo
- Publication number
- JP2576221B2 JP2576221B2 JP1051575A JP5157589A JP2576221B2 JP 2576221 B2 JP2576221 B2 JP 2576221B2 JP 1051575 A JP1051575 A JP 1051575A JP 5157589 A JP5157589 A JP 5157589A JP 2576221 B2 JP2576221 B2 JP 2576221B2
- Authority
- JP
- Japan
- Prior art keywords
- structures
- damper
- vibration
- separated
- model
- 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.)
- Expired - Fee Related
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は構造物のエキスパンションジョイント部分
に振動エネルギーを吸収するダンパーを設置した構造体
の接続構造に関するものである。Description: TECHNICAL FIELD The present invention relates to a connection structure of a structure in which a damper for absorbing vibration energy is installed at an expansion joint of a structure.
エキスパンションジョイントは地震に対し、切り離さ
れる構造体の振動による衝突を回避する目的で長大な構
造物や固有周期の異なる構造物間に設けられるが、これ
は構造物を適当な単位に区切ることによりその単位毎に
振動を生じさせ、全体で挙動する場合の、構造物の亀裂
等の障害を未然に防ぐもので、従来は単にそれだけの機
能に留まっている。Expansion joints are installed between long structures and structures with different natural periods in order to avoid collisions due to vibrations of the separated structure against earthquakes.This is achieved by dividing the structures into appropriate units. In this case, vibrations are generated for each unit to prevent a failure such as a crack in a structure in the case of behaving as a whole. Conventionally, the function is merely the same.
この発明は従来のエキスパンションジョイントの消極
的な機能に着目してなされたもので、特に外力作用時に
ねじれ振動を起こす振動性状の異なる構造体の振動減衰
効果を図る構造体の接続構造を提案するものでる。The present invention focuses on the passive function of a conventional expansion joint, and proposes a connection structure for a structure that achieves a vibration damping effect of structures having different vibration characteristics that cause torsional vibration when an external force is applied. Out.
この発明ではエキスパンションジョイントで切り離さ
れた構造物の構造体間に、水平方向の振動を吸収するダ
ンパーを跨設し、ダンパーで両構造体を接続することに
より区切られた各構造体の振動エネルギーをジョイント
部分で吸収させ、ジョイントに振動を早期に減衰させる
機能を付加するとともに、互いに切り離される構造体
を、剛心と重心の位置をずらして偏心させることにより
これに地震動に対してねじれ振動を起こさせ、ダンパー
が接続される構造体間の相対水平変形を大きくさせるこ
とによりダンパーに、その変形量に応じたエネルギー吸
収能力を発揮させ、効果的に機能させる。In the present invention, a damper that absorbs horizontal vibration is straddled between the structures of the structures separated by the expansion joint, and the vibration energy of each of the separated structures is connected by connecting the two structures with the damper. In addition to adding the function of absorbing vibration at the joint part and attenuating vibration to the joint at an early stage, the structure separated from each other is decentered by shifting the position of the rigid center and the center of gravity, causing torsional vibration against earthquake motion. Then, by increasing the relative horizontal deformation between the structures to which the damper is connected, the damper can exhibit an energy absorbing ability according to the amount of the deformation and function effectively.
構造体間に跨設されたダンパーは各構造体から水平に
片持ち式に突設される梁間や、梁とスラブ間に介在する
ことにより、もしくは各構造体から突設される各梁上に
載り、その頭部間に連結部材が跨設されることにより構
造体間に設置される。The dampers straddled between the structures are interposed between the beams projected from each structure horizontally in a cantilever manner, between beams and slabs, or on each beam projected from each structure. The connecting member is placed between the heads of the members, and is installed between the structures.
以下この発明を一実施例を示す図面に基づいて説明す
る。Hereinafter, the present invention will be described with reference to the drawings showing an embodiment.
この発明は第1図−Iに示すように破線で示す耐震要
素を、エキスパンションジョイントで切り離される各構
造体S内で平面上不均衡に配置しておくことにより構造
体Sの剛心と重心を偏心させ、構造体Sが外力作用時に
ねじれ振動を起こすようにし、さらにIIに示すようにこ
のねじれ振動時に最も大きく揺れるエキスパンションジ
ョイント位置にダンパーDを設置することによりダンパ
ーDの変形量を大きくし、ダンパーDに効果的に、高い
エネルギー吸収能力を発揮させるものである。According to the present invention, as shown in FIG. 1-I, the rigidity and the center of gravity of the structure S are arranged in a non-uniform manner in each of the structures S separated by the expansion joint. By eccentricity, the structure S causes torsional vibration when an external force is applied, and furthermore, as shown in II, the damper D is installed at the expansion joint position where the structure shakes most during this torsional vibration, thereby increasing the amount of deformation of the damper D. This effectively causes the damper D to exhibit a high energy absorbing ability.
第2図乃至第4図の実施例は構造体S,Sの双方から梁
1、またはスラブ2を水平に片持ち式にそれぞれにレベ
ル差を付けて突設し、この両梁1,1間、または梁1とス
ラブ2間にダンパーDを介在させた場合である。In the embodiment shown in FIGS. 2 to 4, a beam 1 or a slab 2 is horizontally and cantilevered from each of the structural bodies S, S with a level difference, and the beam 1 or the slab 2 is provided between the two beams 1, 1. Or a case where a damper D is interposed between the beam 1 and the slab 2.
第2図のダンパーDは自身でエネルギー吸収能力を保
有する高減衰ゴムや粘弾性体を用いたもので、第3図、
第4図の実施例は水平せん断力に対してそれぞれ曲げ変
形、せん断変形して弾性から塑性化し、その塑性変形能
力によってエネルギーを吸収する弾塑性ダンパーを用い
た場合である。The damper D in FIG. 2 uses a high-damping rubber or a viscoelastic material having its own energy absorbing ability.
The embodiment shown in FIG. 4 is a case where an elasto-plastic damper is used, which bends and shears in response to a horizontal shearing force to plasticize from elasticity and absorbs energy by its plastic deformation ability.
第2図乃至第4図に示すダンパーDは上下端で梁1、
またはスラブ2に固定されるが、第3図のダンパーDは
頭部の回転が拘束されない状態で設置される。The damper D shown in FIG. 2 to FIG.
Alternatively, although fixed to the slab 2, the damper D in FIG. 3 is installed in a state where the rotation of the head is not restricted.
第5図の実施例は第3図に示すタイプのダンパーDの
使用例であるが、2個のダンパーD,Dを両構造体S,Sから
同一レベルで突設された梁1,1上に載せ、その頭部間に
構造体S,Sから切り離された連結部材3を跨設して2個
のダンパーD,Dを接続した場合である。The embodiment shown in FIG. 5 is an example of use of a damper D of the type shown in FIG. 3, but two dampers D, D are mounted on beams 1, 1 projecting from both structures S, S at the same level. In this case, two dampers D, D are connected to each other with the connecting member 3 separated from the structures S, S being straddled between the heads.
以上の構造体S,Sの接続構造は特に第6図−I,IIに示
すように平面的には構造体S,Sの隅角部、立体的には第
7図−I,II,IIIに示すように構造体S,Sの頂部や振動モ
ードの腹に相当する位置等両構造体S,Sの相対水平変位
が大きくなる箇所への適用が効果的である。The connection structure of the structures S, S described above is particularly a plan view as shown in FIGS. 6-I and II, and a three-dimensional view of the corners of the structures S and S as shown in FIGS. 6-I and II. As shown in (1), it is effective to apply to a location where the relative horizontal displacement of the two structures S, S is large, such as the top of the structures S, S, or the position corresponding to the antinode of the vibration mode.
ここで第8図、第9図に示すような本発明を実施した
構造物の振動モデル(それぞれモデル1、モデル2)
と、第10図に示すエキスパンションジョイントを設け
ず、この発明を実施しない構造物のモデル(モデル3)
との比較を別添の表−1に示す。図中I,IIはそれぞれ平
面図、立面図、矢印は振動方向、○印はダンパーD設置
箇所を示し、平面図において実線は耐震架構である。モ
デル1は一方向の並進振動のみの場合、モデル2はねじ
れ振動を付加した場合で、モデル1、モデル2ともA,B,
C,D棟が個々に挙動し、モデル3は全体で挙動するもの
である。Here, a vibration model of a structure according to the present invention as shown in FIGS. 8 and 9 (model 1 and model 2 respectively)
And a model of a structure not provided with the expansion joint shown in FIG. 10 and not implementing the present invention (model 3)
Table 1 shows the comparison with Table 1. In the figure, I and II are a plan view, an elevation view, an arrow indicates a vibration direction, a circle indicates a place where the damper D is installed, and a solid line in the plan view indicates an earthquake-resistant frame. Model 1 is a case where only one-way translational vibration is applied, and Model 2 is a case where a torsional vibration is added.
Buildings C and D behave individually, and Model 3 behaves as a whole.
この表からモデル1の構造では、ダンパーD設置時の
応答値は不設置時のそれに対して65%(0.34/0.52)に
低減し、またモデル2の構造では応答値がモデル3の構
造に対して48%(0.21/0.44)、モデル1に対しても62
%(0.21/0.34)に低減しており、特に分離した各構造
体Sを偏心させる等その振動性状を適当に変化させるこ
とによりダンパーD設置による大きなエネルギー吸収効
果が、殊にねじれ振動時に顕著に表れていることがわか
る。表中のJ.Dは本発明のダンパー(ジョイントダンパ
ー)である。From this table, in the model 1 structure, the response value when the damper D is installed is reduced to 65% (0.34 / 0.52) compared to that when the damper D is not installed, and in the model 2 structure, the response value is smaller than the model 3 structure. 48% (0.21 / 0.44), 62 for model 1
% (0.21 / 0.34), and the large energy absorption effect by the installation of the damper D is remarkable especially in torsional vibration by appropriately changing the vibration characteristics such as eccentricity of each separated structure S. It can be seen that it appears. JD in the table is the damper (joint damper) of the present invention.
この発明は以上の通りであり、間隙を持って切り離さ
れた構造体間にエネルギー吸収装置としてのダンパーを
構造体から突設した梁またはスラブ間に介在させて設置
し、これで両構造体を接続したものであるため施工が容
易である上、区切られた構造体の振動エネルギーが個々
のダンパーで消費され、構造物の振動が早期に減衰され
ることになる。The present invention is as described above, and a damper as an energy absorbing device is interposed between beams or slabs protruding from the structure between the structures separated with a gap, and thereby both structures are installed. Since the connection is made, the construction is easy, and the vibration energy of the divided structure is consumed by the individual dampers, so that the vibration of the structure is attenuated at an early stage.
特に各構造体の耐震要素を偏心させて配置し、構造体
にねじれ振動を生じさせることにより上記の通り効果的
にダンパーのエネルギー吸収能力を発揮させることが可
能である。In particular, as described above, it is possible to effectively exert the energy absorbing ability of the damper by arranging the seismic elements of each structure eccentrically and generating torsional vibration in the structure.
第1図−I,IIは構造体の配置状態の平面図、第2図,第
3図,第4図,第5図はこの発明の実施例を示した立面
図、第6図−I,IIは構造物内でこの発明の実施箇所を示
した平面図、第7図−I,II,IIIは同じく立面図、第8図
及び第9図はこの発明を実施した構造物のモデルを示し
た概念図、第10図は実施しない構造物のモデルを示した
概念図で、いずれもIは平面図、IIは立面図である。 S……構造体、D……ダンパー、1……梁、2……スラ
ブ、3……連結部材。FIGS. 1-I and II are plan views showing the arrangement of the structures, FIGS. 2, 3, 4 and 5 are elevation views showing an embodiment of the present invention, and FIGS. 6-I , II is a plan view showing a place where the present invention is implemented in the structure, FIGS. 7-I, II, and III are elevation views of the same, and FIGS. 8 and 9 are models of the structure embodying the present invention. And FIG. 10 is a conceptual diagram showing a model of a structure not to be implemented, in which I is a plan view and II is an elevation view. S ... structure, D ... damper, 1 ... beam, 2 ... slab, 3 ... connection member.
フロントページの続き (72)発明者 ▲吉▼貝 滋 東京都港区元赤坂1丁目2番7号 鹿島 建設株式会社内 (72)発明者 田中 直樹 東京都調布市飛田給2丁目19番1号 鹿 島建設株式会社技術研究所内 (72)発明者 福元 敏之 東京都調布市飛田給2丁目19番1号 鹿 島建設株式会社技術研究所内 (72)発明者 前田 祥三 東京都港区元赤坂1丁目2番7号 鹿島 建設株式会社内 (56)参考文献 特開 昭64−36840(JP,A)Continued on the front page (72) Inventor ▲ Yoshi ▼ Shigeru Kashima Construction Co., Ltd. 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (72) Inventor Naoki Tanaka 2-191-1, Tobita-Shi, Chofu-shi, Tokyo Shika Shima Construction Co., Ltd. (72) Inventor Toshiyuki Fukumoto 2-19-1, Tobita-Shi, Chofu-shi, Tokyo Kashima Construction Co., Ltd. (72) Inventor Shozo Maeda 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 in Kashima Construction Co., Ltd. (56) References JP-A-64-36840 (JP, A)
Claims (2)
距離をおいて互いに切り離された構造物の、剛心と重心
とが偏心し、外力作用時にねじれ振動を起こす構造体間
に水平方向の振動を吸収するダンパーを跨設し、かつダ
ンパーを構造体から水平に片持ち式に突設される梁間、
または梁とスラブ間に介在させ、このダンパーで両構造
体を接続してあることを特徴とする構造体の接続構造。A structure in which a rigidity and a center of gravity of a structure separated from each other at a distance in a horizontal direction by an expansion joint are eccentric, and a horizontal vibration is absorbed between the structures which generate a torsional vibration when an external force is applied. Between the beams that straddle the damper and project the cantilever horizontally from the structure,
Alternatively, the structure is connected between the beam and the slab, and the two structures are connected by the damper.
距離をおいて互いに切り離された構造物の、剛心と重心
とが偏心し、外力作用時にねじれ振動を起こす構造体間
に水平方向の振動を吸収するダンパーを跨設し、かつダ
ンパーを両構造体から水平に片持ち式に突設される各梁
上に載せ、その頭部間に両構造体から切り離される連結
部材を跨設し、前記ダンパーで両構造体を接続してある
ことを特徴とする構造物における構造体の接続構造。2. A structure in which a rigid center and a center of gravity of a structure separated from each other at a distance in the horizontal direction by an expansion joint are eccentric to each other, and absorb horizontal vibration between structures which cause torsional vibration when an external force acts. A damper is straddled, and the damper is placed on each of the beams projecting from the two structures horizontally in a cantilever manner, and a connecting member separated from the two structures is straddled between the heads, and the damper is used. A connection structure of structures in a structure, wherein both structures are connected to each other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1051575A JP2576221B2 (en) | 1989-03-03 | 1989-03-03 | Structure connection structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1051575A JP2576221B2 (en) | 1989-03-03 | 1989-03-03 | Structure connection structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02232478A JPH02232478A (en) | 1990-09-14 |
JP2576221B2 true JP2576221B2 (en) | 1997-01-29 |
Family
ID=12890748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1051575A Expired - Fee Related JP2576221B2 (en) | 1989-03-03 | 1989-03-03 | Structure connection structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2576221B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3425609B2 (en) * | 1995-10-20 | 2003-07-14 | 株式会社竹中工務店 | Seismic isolation method for structures and seismic isolation structures |
JPH11343675A (en) * | 1998-04-01 | 1999-12-14 | Mitsubishi Heavy Ind Ltd | Damping device and damping structure |
JP2008202292A (en) * | 2007-02-20 | 2008-09-04 | Shimizu Corp | Expansion joint structure |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6436840A (en) * | 1987-07-31 | 1989-02-07 | Kajima Corp | Elastic and plastic damper |
-
1989
- 1989-03-03 JP JP1051575A patent/JP2576221B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH02232478A (en) | 1990-09-14 |
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