JPH0492040A - Vibration damping beam - Google Patents

Vibration damping beam

Info

Publication number
JPH0492040A
JPH0492040A JP20612990A JP20612990A JPH0492040A JP H0492040 A JPH0492040 A JP H0492040A JP 20612990 A JP20612990 A JP 20612990A JP 20612990 A JP20612990 A JP 20612990A JP H0492040 A JPH0492040 A JP H0492040A
Authority
JP
Japan
Prior art keywords
concrete
vibration damping
steel
steel plates
plates
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.)
Granted
Application number
JP20612990A
Other languages
Japanese (ja)
Other versions
JP2810927B2 (en
Inventor
Masaru Sukagawa
須賀川 勝
Yuichiro Ogawa
雄一郎 小川
Kazuhiko Maebayashi
和彦 前林
Genichi Kimura
木村 元一
Kazuichi Numano
沼野 主一
Michio Mizumoto
水本 道雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOSHIN TATEMONO KK
Shimizu Construction Co Ltd
Shimizu Corp
Original Assignee
TOSHIN TATEMONO KK
Shimizu Construction Co Ltd
Shimizu Corp
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 TOSHIN TATEMONO KK, Shimizu Construction Co Ltd, Shimizu Corp filed Critical TOSHIN TATEMONO KK
Priority to JP20612990A priority Critical patent/JP2810927B2/en
Publication of JPH0492040A publication Critical patent/JPH0492040A/en
Application granted granted Critical
Publication of JP2810927B2 publication Critical patent/JP2810927B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To effectively damp vertical vibration on a floor by laminating a plurality of long-sized steel plates and viscoelastic materials on the underside of a beam of composite construction of steel frame and concrete to fix a vibration damping device on said plates and materials. CONSTITUTION:A beam 10 has a composite construction comprising a steel frame 12 and concrete 13 such that the lower part of the steel frame 12 having H-shaped section only is covered with the concrete 13 to form a partial SRC construction, while a vibration damping device 11 is fixed to the underside of the beam 10. A set of three pieces of steel plates, an upper, intermediate and lower one, out of five pieces of steel plates 20 and a set of the other two pieces out of said five pieces of steel plates are alternately stacked, in which viscoelastic materials 21 are interposed between the adjacent plates. Further, the end of the former set of steel plates is secured to the concrete 13 by means of bolts 30, while the end of the latter set is fixed to the concrete 13 by means of bolts 31. As a result, vertical vibration of a floor slab 14 can be sufficiently damped.

Description

【発明の詳細な説明】[Detailed description of the invention]

「産業上の利用分野」 本発明は構造物の床面の1.下振動を抑制するための制
振束に関する。 [従来の技術−1 地震や機械振動等の外力によって構造物の床面に発生す
る上下振動を抑制するための制振束として、たとえば第
4図および第5図に示1ものが従来より知られている。 第4図に示すもの(実開昭61−181410号)は、
鋼板を折り曲げ加]゛〔2て形成した断面略Σ形の形鋼
からなる梁材1の7ランジ2.2の内側面に、振動減衰
性能の高い粘弾性体層3を2枚の鋼板4,4で挾持して
なる制振ユーット5.5をそれぞれ取り付(〕な構成の
ものである。また、第5図に示すもの(実開昭57−8
421.8号)は、粘弾性体層6を2本のみぞ形鋼7,
7のそhぞれの背面で挾持して一体化し2て断面をH型
となし、たものである。 [発明が解決し、ようとする課題」 上記2例の制振束は、いずれも、構造物の床面に発生ず
る振動エネルギを振動減衰性能の高い粘弾性体層3,6
で吸収することにJつて、構造物に発生する振動を抑制
しようというものであるが、それぞれ次のような欠点が
あった。 すなわち、第4図に示したものは、粘弾性体層3にさほ
ど大きな変形量が加わるものではなく、このため微振動
を抑制することはできるが大きな振動に対してはさほど
有効なものではない。また、梁材1の断面が特殊な略Σ
形状であるため成形や加]−が難シ、<、設計し難い等
の欠点もある。 また、第5図に示し、たものは、粘弾性体層6が垂直な
状態で使用さねるt−め、水平力向の振動吸収には効果
的であるがF下刃向の振動を吸収するには不適当なもの
である。 本発明は上記従来の制振梁の有する欠点を解消し得て、
床面の上下振動を効果的に抑制し、得るイI効な制振粱
を提供することを目的としている。 [課題を解決するt−めの手段」 本発明の制振梁は、鉄骨とコンクリートとの複合構造と
された梁材の下面1.′、複数枚の長尺の鋼板と粘弾性
材を貼り合わせ、長手方向に変位可能に積層してなる構
造の制振装置を装備し、たものである。 1作用」 本発明の制振粱は、梁材が鉄骨とコンクリートとの複合
構造どされているので、純鉄骨造とされている場合に比
しでその自重は大きくなるものの剛性は自ずと高まるの
で、変形抑制の点で純鉄骨造の場合に比して有利なもの
である。イし、て、地震時等に梁材が上下振動した際に
は、梁材の17面および下面はそれぞれ長手方向に伸縮
−4るよう1こ変形Vることになるが、その際には、梁
材の1・面に取り伺けられている制振装置の各鋼板と2
し7.か長手方向に位置ずれを生じ、それに伴−)(゛
名調板間に挟み込まれでいる粘弾性材が変形[1、イの
変形にJり振動エネルギか吸収され、ユれによ−〕で梁
材の1下振動は速やかtコ減衰さぜられる、31実施例
1 以下、本発明の一実施例を第1図ないし第3図を参照し
て説明する。 @1図は本実施例の制振梁の横断面図、第2図はその下
面を示す図であって、この制振梁は、梁材10の下面に
制振装置11を装備した構成とされている。 梁材10は、鉄骨】2どコンクリ−ト13との複合構造
、つまり、断面H型の鉄骨12の下部のみがコンクリ−
)13により被覆された形態の部分的なSRC造とされ
たものであっで、この梁材10により床スラブ14が支
持されるようにな−っている。符号15は梁材】C)と
床スラブ14とを一体化するためのスタンドである。な
お、鉄・H・12の下部を覆うコンクリ−ト13に刻し
゛℃ノ°トストレズを導入するようぶこし2、でも良く
、その場合はPC鋼材をコンクリ−113中に埋設して
緊張φ−れば良い。 上記梁材10の下面(コンクリ−1−13の下面)は平
坦面とされχいて、ぞこにはF−記制振装置1ii1が
装備さねている。制振装置11は、第3図にイの中間部
を省略しで示したように、複数枚(図示例のものでは5
枚)の長尺の鋼板20・・・を2組に分けて粘弾性材2
1・・・を介し、て貼り合わぜるごとによって、それら
鋼板20・・・を長手方向に変位可能に積層
"Industrial Application Field" The present invention applies to 1. This invention relates to a damping bundle for suppressing downward vibration. [Prior Art-1 For example, the one shown in Figs. 4 and 5 has been known as a damping bundle for suppressing vertical vibrations generated on the floor surface of a structure due to external forces such as earthquakes and mechanical vibrations. It is being The one shown in Figure 4 (Utility Model Application No. 181410/1983) is
A viscoelastic layer 3 with high vibration damping performance is applied to the inner surface of the 7 flange 2.2 of the beam material 1 made of a section steel with an approximately Σ-shaped cross section formed by bending a steel plate. , 4 are each mounted with a damping unit 5.5. Also, the one shown in Fig.
No. 421.8), the viscoelastic layer 6 is formed by two groove shaped steels 7,
7 and 7 are integrated by sandwiching them at the back surfaces of each of them, and the cross section is H-shaped. [Problems to be Solved and Attempted by the Invention] The damping bundles in the above two examples both absorb vibration energy generated on the floor surface of a structure by using viscoelastic layers 3 and 6 that have high vibration damping performance.
The purpose of absorbing vibrations is to suppress the vibrations generated in structures, but each method has the following drawbacks. In other words, the one shown in FIG. 4 does not apply a very large amount of deformation to the viscoelastic layer 3, and therefore, although it can suppress slight vibrations, it is not very effective against large vibrations. . In addition, the cross section of the beam material 1 is a special abbreviation Σ
Due to its shape, it is difficult to mold and process, and it is difficult to design. In addition, the one shown in Fig. 5 is effective in absorbing vibrations in the horizontal force direction, but absorbs vibrations in the direction of the lower blade, since the viscoelastic layer 6 is not used in a vertical state. It is inappropriate to do so. The present invention can eliminate the drawbacks of the conventional damping beams,
The purpose of this invention is to effectively suppress vertical vibrations of a floor surface and provide an effective vibration damping rod. [T-th Means for Solving the Problems] The vibration damping beam of the present invention has a composite structure of steel frame and concrete, and the lower surface 1. ', It is equipped with a vibration damping device constructed by laminating multiple long steel plates and viscoelastic materials so that they can be displaced in the longitudinal direction. 1 Effect" Since the vibration damping rod of the present invention has a composite structure of steel and concrete beams, its own weight is greater than that of a pure steel frame structure, but its rigidity is naturally increased. , which is more advantageous than pure steel construction in terms of deformation control. When the beam vibrates vertically during an earthquake, etc., the 17th surface and the lower surface of the beam will be deformed by 1 to expand and contract -4 in the longitudinal direction, but in that case, , each steel plate of the vibration damping device that is cut into the 1st side of the beam material, and 2nd side of the beam material.
7. (1) The viscoelastic material sandwiched between the tone plates is deformed [Due to the deformation in (1) and (a), some vibration energy is absorbed, and due to the wobbling] 31 Embodiment 1 An embodiment of the present invention will be explained below with reference to Figs. 1 to 3. Fig. 1 is the present embodiment. FIG. 2 is a cross-sectional view of the vibration damping beam shown in FIG. 2, which shows the bottom surface of the vibration damping beam. [Steel frame] Composite structure with second concrete 13, that is, only the lower part of the steel frame 12 with an H-shaped cross section is made of concrete.
) 13, and a floor slab 14 is supported by the beams 10. Reference numeral 15 is a stand for integrating the beam material C) and the floor slab 14. In addition, it is also possible to carve into the concrete 13 covering the lower part of the iron H-12 and introduce a tension φ-. That's fine. The lower surface of the beam 10 (the lower surface of the concrete 1-13) is a flat surface, and an F-recorded vibration damping device 1ii1 is installed thereon. The vibration damping device 11 includes a plurality of vibration damping devices (5 in the illustrated example), as shown in FIG.
) long steel plates 20... are divided into two sets and the viscoelastic material 2 is
The steel plates 20... are laminated so as to be displaceable in the longitudinal direction by laminating them together through the...

【、た構成
のものである。すなわち、5枚の鋼板20・・・のうち
、」、下および中間の3枚の鋼板を1組となすとともに
、他の2枚の鋼板を他の1組となし、そtlら各組の鋼
板20・・・を粘弾性材21・・・を挟み込んで交互に
積層し、一方の組の鋼板の一端(第2図、第3図におい
で右端)をコンクリート13に刻してボルト30により
固定し、他方の組の鋼板の一端(同、左端)を同様にボ
ルト・;(1により1〉クリ−[13に固定しI′−も
のとさJlて゛いる。杓号32はスベ サである。 また、制振装置11の中間部分は、梁材]0のト面から
@iれt゛かることのないように、かつ、梁材1(口こ
対する変位(長手方向のずIl)が拘束されなし)よう
に、吊具40によって、支持されるようになっている6
その吊具40は第1図、第2図に示t ! 5に、制振
装置11を支持する!−め1こほぼ等間隔で設置JらF
lだ複数本(図示例のものでは6本)の÷:持棒41・
・・と、それら支持棒4]・・・をコンクリ ト13か
ら吊り]・げるためのXTX方枠状の吊棒42・・ど、
それら吊棒42・・・とコンクリ−1−13との間に介
装される緩衝材(ゴムクッシa’−等)43・・・から
構成さねでいる。 なお、第1図11″示すように、最下段の鋼板20は他
の鋼板に比して幅広とされ、その両側縁は上刃に折り曲
げらねた形態とされているが、そのようにすることに限
るものではない。また、十J己の吊具40も、制振装W
、11の中間部分を梁材11の下面から垂れ下がること
のないようl;、か′〕、梁材10に割AZ)変位を拘
束しない形態で支持し得るものであれは、他の構成のも
のも採用し、得る。 −j:記の制振梁では、梁材】0が鉄骨12とフンクリ
−1・】3との複合構造とされでいるので、梁材が純鉄
骨造である場合仁比して自ずと高剛性となっており、そ
才1自体で」−下方向の変形が抑制されるものとなって
いる。また、上記の梁材10が上下振動したときには、
その梁材10の上部および下部は伸縮するように変形j
ることになるが、その際には制振装#t】1を構成しで
いる各組の鋼板20・・・が梁材】0の長ゴ′方向に相
対的にずれることlこなり、それに伴って粘弾性材21
・・・が変形し、それによって振動エネルギが吸収され
て梁材10の土r振動が速やかに減衰させられることに
なる。 し、だがっで、この制@梁を採用することにより床スラ
ノ゛14の」:下振動を十分に抑制することができ、床
面の振動が特に問題とされる建築物の梁としで適用し、
て好適である。 なお、粘弾性材2jとしではたとえばゴムアスファルト
系のものを用いると良く、その粘弾性材の面積、暦数、
厚み等を適宜alpaすることで、所望の減衰特性を自
由に得ることができる。 また、上記実施例における梁材10は、鉄骨12の下部
のみをコンクリ−ト13により被覆した形態の部分的な
SRC造のものとしたが、梁材の形態は鉄骨とコンクリ
ートとの複合構造であれば適宜で良く、たとえば鉄骨全
体を一1ンクリ・−1・により被覆した一般のSRC造
や、充填型あるいは被覆型もしくは充填被覆型の鋼管コ
ンクリ−構造等を採用できるし、既に述べたようにプレ
ストレスを導入するようにしても良い。 また、制振装置11を梁材10の下面にではなく上面や
側面に設けることも考えられるが、上記のような制振装
ffi!1.1を梁材10の上面に取り付けることは床
スラブ14との取り合いから困雌であるL5、梁材10
の側面に設けた場合には第5図に示した従来のものと同
様に粘弾性材21が垂直となるので効果的でなく、した
がって、上記のように梁材10の下面に制振装置1】を
取り付けることが良いっ 「発明の効果」 以」二で詳細に説明し、I’: 、lうに、本発明は、
鉄骨とコンクリートとの複合構造とされた梁材の下面に
、複数枚の長尺の鋼板と粘弾性材を貼り合わせ、長手方
向に変位可能に積層しズ−なる構造の制振装置を装備[
、たものであるから、!R:祠が純鉄骨造である場合に
比1.て高剛性のものであってそれ自体で上下方向の変
形が抑制されるとともに、制振装置により梁材の振動エ
ネルギが吸収されてその上下振動を速やかに減衰させる
ことができる、という効果を奏す”る。
[This is a configuration with the following configuration. That is, among the five steel plates 20..., the lower and middle three steel plates constitute one set, the other two steel plates constitute another set, and so on. Steel plates 20 are stacked alternately with viscoelastic materials 21 sandwiched between them, and one end of one set of steel plates (the right end in FIGS. 2 and 3) is cut into concrete 13 and bolted with bolts 30. Fix one end of the steel plate of the other set (the left end) in the same way with the bolt. In addition, the middle part of the vibration damping device 11 is designed so that it does not move from the top surface of the beam material 1, and with a displacement (longitudinal direction) against the beam material 1. 6 is adapted to be supported by the hanging device 40 so that the
The hanging device 40 is shown in FIGS. 1 and 2. 5, supporting the damping device 11! - Installed at approximately equal intervals J and F
1. Multiple rods (6 in the example shown) ÷: Holding rod 41.
. . . and their support rods 4]... from the concrete 13.
It is composed of cushioning materials (rubber cushions a'-, etc.) 43 interposed between the hanging rods 42 and the concrete 1-13. As shown in FIG. 11'', the steel plate 20 at the bottom is wider than the other steel plates, and its both edges are bent into upper blades. However, it is not limited to this. Also, the hanging device 40 of the
, 11 so that the middle part of the beam 11 does not hang down from the bottom surface of the beam 11. If it can be supported without restricting displacement, it is possible to use other configurations. Recruit and obtain. -j: In the damping beam shown below, the beam material ]0 has a composite structure of the steel frame 12 and the concrete structure -1 and ]3, so if the beam material is a pure steel structure, it will naturally have a higher rigidity than the beam material. Therefore, the downward deformation of the body 1 itself is suppressed. Moreover, when the beam material 10 mentioned above vibrates vertically,
The upper and lower parts of the beam 10 are deformed to expand and contract.
However, in that case, each set of steel plates 20 . Along with this, the viscoelastic material 21
... is deformed, thereby absorbing the vibration energy, and the soil r vibration of the beam member 10 is quickly attenuated. However, by adopting this control beam, it is possible to sufficiently suppress the vibration under the floor slant, and it can be applied as a beam in buildings where floor vibration is a particular problem. death,
It is suitable. In addition, as the viscoelastic material 2j, it is preferable to use, for example, a rubber asphalt type material, and the area of the viscoelastic material, the calendar number,
Desired attenuation characteristics can be freely obtained by adjusting the thickness and other parameters appropriately. Furthermore, although the beam 10 in the above embodiment was a partial SRC structure in which only the lower part of the steel frame 12 was covered with concrete 13, the beam was of a composite structure of steel frame and concrete. For example, it is possible to adopt a general SRC structure in which the entire steel frame is covered with 11 concrete, or a steel pipe concrete structure of a filled type, a covered type, or a filled coated type. It is also possible to introduce prestress. It is also possible to provide the vibration damping device 11 on the top or side surface of the beam 10 instead of on the bottom surface, but the vibration damping device ffi! It is difficult to attach L5 and beam 10 to the upper surface of the beam 10 due to the conflict with the floor slab 14.
If the vibration damping device 1 is provided on the side surface of the beam material 10, it will not be effective because the viscoelastic material 21 will be vertical as in the conventional one shown in FIG. 】 ``Effects of the Invention'' This will be explained in detail in Section 2 below.
A vibration damping device is equipped with a structure in which multiple long steel plates and viscoelastic materials are laminated to the lower surface of the beam, which has a composite structure of steel and concrete, and can be laminated so that it can be displaced in the longitudinal direction.
, because it is a thing! R: If the shrine is made of pure steel, the ratio is 1. It is highly rigid and suppresses deformation in the vertical direction by itself, and the vibration damping device absorbs the vibration energy of the beam material and has the effect of quickly damping the vertical vibration. ”ru.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図ないし、第3図は本発明に係る制振梁の一実施例
を示すもので、第1図は横断面図、第2図はその下面を
示す図、第3図は中間部分を省略して示した制振装置の
側面図である。 第4図および第5図はそれぞれ制振粱の従来例を示す斜
視図である。 10・・・・・・梁材、11・・・・・・制振装置、1
2・・・・・・鉄骨、13・・・・・・コンクリ−1−
120・・・・・・鋼板、21・・・・・・粘弾性材、
40・・・・・吊具。
Figures 1 to 3 show an embodiment of the vibration damping beam according to the present invention, with Figure 1 being a cross-sectional view, Figure 2 being a view showing the lower surface, and Figure 3 showing the middle part. It is a side view of the vibration damping device which is omitted. FIG. 4 and FIG. 5 are perspective views showing conventional examples of vibration damping rods, respectively. 10... Beam material, 11... Vibration damping device, 1
2...Steel frame, 13...Concrete-1-
120... Steel plate, 21... Viscoelastic material,
40...Hanging tool.

Claims (1)

【特許請求の範囲】[Claims] 鉄骨とコンクリートとの複合構造とされた梁材の下面に
、複数枚の長尺の鋼板と粘弾性材を貼り合わせ、長手方
向に変位可能に積層してなる構造の制振装置を装備した
ことを特徴とする制振梁。
The lower surface of the beam, which has a composite structure of steel and concrete, is equipped with a vibration damping device that consists of multiple long steel plates and viscoelastic material laminated together so that they can be displaced in the longitudinal direction. A vibration damping beam featuring:
JP20612990A 1990-08-03 1990-08-03 Damping beam Expired - Fee Related JP2810927B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20612990A JP2810927B2 (en) 1990-08-03 1990-08-03 Damping beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20612990A JP2810927B2 (en) 1990-08-03 1990-08-03 Damping beam

Publications (2)

Publication Number Publication Date
JPH0492040A true JPH0492040A (en) 1992-03-25
JP2810927B2 JP2810927B2 (en) 1998-10-15

Family

ID=16518268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20612990A Expired - Fee Related JP2810927B2 (en) 1990-08-03 1990-08-03 Damping beam

Country Status (1)

Country Link
JP (1) JP2810927B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6834753B2 (en) * 2001-06-01 2004-12-28 Inventio Ag Escalator or moving walkway
CN103526858A (en) * 2012-07-05 2014-01-22 凯耐施株式会社 Building-used damping device
CN104929312A (en) * 2015-06-11 2015-09-23 山东远博建筑科技有限公司 Profile steel outer-packed concrete reinforcement beam and manufacture method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6834753B2 (en) * 2001-06-01 2004-12-28 Inventio Ag Escalator or moving walkway
US6955254B2 (en) 2001-06-01 2005-10-18 Inventio Ag Escalator or moving walkway
CN103526858A (en) * 2012-07-05 2014-01-22 凯耐施株式会社 Building-used damping device
CN103526858B (en) * 2012-07-05 2016-02-10 凯耐施株式会社 Building vibration absorber
CN104929312A (en) * 2015-06-11 2015-09-23 山东远博建筑科技有限公司 Profile steel outer-packed concrete reinforcement beam and manufacture method

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