JPH05171835A - Dynamic vibration absorber for building - Google Patents
Dynamic vibration absorber for buildingInfo
- Publication number
- JPH05171835A JPH05171835A JP34315291A JP34315291A JPH05171835A JP H05171835 A JPH05171835 A JP H05171835A JP 34315291 A JP34315291 A JP 34315291A JP 34315291 A JP34315291 A JP 34315291A JP H05171835 A JPH05171835 A JP H05171835A
- Authority
- JP
- Japan
- Prior art keywords
- building
- dynamic vibration
- suspension member
- vibration absorber
- vibration
- 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
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、風、地震、交通振動に
よる建物の主として水平方向の振動（横揺れ）を抑制す
るための建物用動吸振器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dynamic vibration absorber for a building for suppressing mainly horizontal vibration (rolling) of a building due to wind, earthquake, or traffic vibration.
【０００２】[0002]
【従来の技術】建物用防振装置として、特開昭63-76932
号公報に記載の如くの動吸振器を用いるものがある。こ
の動吸振器は、おもり、ばね、抵抗の各要素を組合わせ
たものを建物に設置することにて構成されている。2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 63-76932 discloses a vibration damping device for buildings.
Some of them use a dynamic vibration reducer as described in Japanese Patent Publication No. This dynamic vibration reducer is constructed by installing a combination of weight, spring, and resistance elements in a building.
【０００３】また、建物の床構造体の防振装置として、
特開平2-194240号公報に記載の如く、床の大梁間に配列
固定された各小梁の、低減したい振動数の振動の腹に相
当する部分の側面に、質量体を直接又は粘弾性板を介し
て取付けるものがある。Further, as a vibration isolation device for a floor structure of a building,
As described in Japanese Patent Laid-Open No. 2-194240, a mass body is directly or on a viscoelastic plate on the side surface of a portion corresponding to the antinode of the vibration of the frequency that is desired to be reduced, of each small beam arrayed and fixed between the girders on the floor. There is something to install via.
【０００４】[0004]
【発明が解決しようとする課題】然しながら、従来技術
では、動吸振器を構成するばねと抵抗の各要素を別異の
ものにて構成している。従って、構成複雑であり、工業
化住宅等に簡便かつ安価に採用できなかった。However, in the prior art, the spring and the resistance constituting the dynamic vibration reducer are different from each other. Therefore, the structure is complicated, and it cannot be easily and inexpensively adopted for industrialized houses.
【０００５】また、従来の床構造体の防振装置は、床衝
撃力等に起因して床に生ずる垂直振動（50〜60Hz）を減
衰するものであり、各階全ての床構造体に設ける必要が
あるばかりか、建物の風、地震、交通振動による水平振
動（ 3〜 8Hz）を防振することができない。Further, the conventional vibration isolator for floor structures attenuates vertical vibration (50-60 Hz) generated on the floor due to floor impact force, etc., and must be provided on all floor structures on each floor. In addition, there is no horizontal vibration (3 to 8Hz) due to wind, earthquake, and traffic vibration in the building.
【０００６】本発明は、建物の水平振動を防振するた
め、構成簡素で、工業化住宅等に簡便かつ安価に採用で
きる動吸振器を提供することを目的とする。It is an object of the present invention to provide a dynamic vibration absorber which has a simple structure and can be easily and inexpensively adopted in an industrialized house or the like in order to prevent horizontal vibration of a building.
【０００７】[0007]
【課題を解決するための手段】請求項１に記載の本発明
は、建物の主として水平方向の振動を抑制するための建
物用動吸振器において、懸架材の下端部におもりを取着
して構成され、該懸架材の上端部を天井構造体に緊結固
定して該懸架材を吊り下げ、該懸架材の曲げ振動により
吸振するようにしたものである。According to a first aspect of the present invention, in a dynamic vibration absorber for a building for suppressing mainly horizontal vibration of a building, a weight is attached to a lower end portion of a suspension member. The suspension member is configured so that the upper end portion of the suspension member is tightly fixed to the ceiling structure, the suspension member is suspended, and the suspension member absorbs vibration by bending vibration.
【０００８】請求項２に記載の本発明は、請求項１に記
載の本発明において更に、前記懸架材が、 2個以上の材
を積層した複合材にて構成されるようにしたものであ
る。According to a second aspect of the present invention, in addition to the first aspect of the present invention, the suspension member is composed of a composite material in which two or more members are laminated. ..
【０００９】[0009]
【作用】本発明によれば、下記、の作用がある。
おもりを懸架材で支え、該懸架材の曲げ剛性をばね要素
とするとともに、該懸架材の曲げ振動による内部損失を
抵抗要素とする。即ち、懸架材がばねと抵抗の２つの要
素を代行することとなり、構成簡素な動吸振器を構成で
きる。従って、この動吸振器の固有振動数が建物の水平
方向１次固有振動数に一致するように、おもりと懸架材
を形成し、該懸架材を天井構造体に固定することによ
り、建物の水平方向の振動（横揺れ）を動吸振作用によ
り防振できる。According to the present invention, there are the following actions.
The weight is supported by a suspension member, the bending rigidity of the suspension member serves as a spring element, and the internal loss due to bending vibration of the suspension member serves as a resistance element. That is, the suspension member substitutes for the two elements of the spring and the resistance, so that a dynamic vibration absorber having a simple structure can be configured. Therefore, the weight and the suspension member are formed so that the natural frequency of the dynamic vibration absorber matches the horizontal primary natural frequency of the building, and the suspension member is fixed to the ceiling structure, thereby Vibration in the direction (rolling) can be isolated by the dynamic vibration absorption function.
【００１０】このとき、懸架材は水平方向には柔らか
く、鉛直方向には高い引張強度を発現できるので、動吸
振器として必要な曲げ振動を容易に生じ、かつおもりの
重量を確実に支持可能とする。At this time, since the suspension material is soft in the horizontal direction and can exhibit a high tensile strength in the vertical direction, the bending vibration necessary for the dynamic vibration absorber can be easily generated and the weight of the weight can be reliably supported. To do.
【００１１】上記において、更に懸架材が 2個以上
の材を積層した複合材にて構成されるものとすることに
より、懸架材に要求される特性、即ち(a) 水平方向に容
易に曲げ振動を生じ、(b) 曲げによる内部損失を大と
し、(c) 鉛直方向にはおもりを安全確実に支持し得るこ
と、をより確実に達成することができる。In the above, the suspension material is made of a composite material in which two or more suspension materials are laminated, so that the characteristics required for the suspension material, that is, (a) bending vibration in the horizontal direction is easy. It is possible to more reliably achieve that (b) the internal loss due to bending is large, and (c) the weight can be supported safely and reliably in the vertical direction.
【００１２】尚、本発明にあっては、動吸振器を天井構
造体に設けることが必須であり、最上階の天井構造体に
設けるのが最適である。但し、該動吸振器を各階の天井
構造体のいずれか、もしくは全てに設けるものであって
も良いことはもちろんである。本発明の実施において、
動吸振器を床構造体に設ける場合には、建物の水平方向
の振動を抑制するための効果が小さい。In the present invention, it is indispensable to install the dynamic vibration reducer on the ceiling structure, and it is optimal to install it on the ceiling structure on the top floor. However, it goes without saying that the dynamic vibration absorber may be provided on any or all of the ceiling structures on each floor. In the practice of the invention,
When the dynamic vibration reducer is provided on the floor structure, the effect of suppressing the horizontal vibration of the building is small.
【００１３】[0013]
【実施例】図１は本発明の第１実施例を示す模式図、図
２は本発明の第２実施例を示す模式図である。1 is a schematic view showing a first embodiment of the present invention, and FIG. 2 is a schematic view showing a second embodiment of the present invention.
【００１４】（第１実施例）（図１参照）動吸振器１０
は、図１（Ａ）、（Ｂ）に示す如く、２階建ユニット建
物１の２階小屋裏部に設置され、建物１の主として水平
方向の振動（横揺れ）を抑制する。そして、動吸振器１
０は、懸架材１１の下端部におもり１２を取着して構成
され、該懸架材１１の上端部を建物１の略中央に設けた
天井補強梁２に緊結固定して該懸架材１１を吊り下げ、
該懸架材１１の曲げ振動により吸振する。(First Embodiment) (See FIG. 1) Dynamic Vibration Absorber 10
As shown in FIGS. 1A and 1B, is installed in the back of the second-floor hut of the two-story unit building 1 and suppresses mainly the horizontal vibration (rolling) of the building 1. And the dynamic vibration absorber 1
0 is configured by attaching a weight 12 to a lower end portion of a suspension member 11, and an upper end portion of the suspension member 11 is tightly fixed to a ceiling reinforcing beam 2 provided at a substantially central portion of the building 1 so that the suspension member 11 is fixed. Hanging,
The suspension member 11 absorbs vibration by bending vibration.
【００１５】図１（Ａ）は動吸振器１０の具体的適用例
である。動吸振器１０は、懸架材１１を木材にて形成
し、懸架材１１の断面寸法を縦22mm、横21mm、長さ300m
m とした。また、動吸振器１０の全おもり重量を建物総
重量（ 3トン）の 1％とし、結果としておもり１２の重
量を30kgに設定した。これにより、建物１のｘ方向１次
固有振動数4.3Hz 、ｙ方向１次固有振動数4.5Hz に対
し、動吸振器１０のｘ方向固有振動数4.3Hz 、ｙ方向固
有振動数4.5Hz となるようにした。FIG. 1A shows a specific application example of the dynamic vibration reducer 10. In the dynamic vibration absorber 10, the suspension member 11 is made of wood, and the cross-sectional dimensions of the suspension member 11 are 22 mm in length, 21 mm in width, and 300 m in length.
m. Further, the total weight of the dynamic vibration reducer 10 was set to 1% of the total weight of the building (3 tons), and as a result, the weight of the weight 12 was set to 30 kg. As a result, the x-direction natural frequency of the building 1 is 4.3 Hz and the y-direction primary natural frequency of 4.5 Hz, whereas the x-direction natural frequency of the dynamic vibration absorber 10 is 4.3 Hz and the y-direction natural frequency is 4.5 Hz. I did it.
【００１６】然るに、図１（Ｂ）の建物１の屋根上に据
付けた小型加振器で加振し、共振テストした結果、動吸
振器１０を設けない場合に比して、建物１の横揺れは約
1/2.5 に低減した。However, as a result of performing a resonance test by vibrating with a small vibration exciter installed on the roof of the building 1 in FIG. 1B, as compared with the case where the dynamic vibration reducer 10 is not provided, Shaking is about
It was reduced to 1 / 2.5.
【００１７】即ち、本実施例によれば、以下の作用があ
る。 おもり１２を懸架材１１で支え、該懸架材１１の曲げ
剛性をばね要素とするとともに、該懸架材１１の曲げ振
動による内部損失を抵抗要素とする。即ち、懸架材１１
がばねと抵抗の２つの要素を代行することとなり、構成
簡素な動吸振器１０を構成できる。従って、この動吸振
器１０の固有振動数が建物１の水平方向１次固有振動数
に一致するように、おもり１２と懸架材１１を形成し、
該懸架材１１を天井構造体が固定することにより、建物
１の水平方向の振動（横揺れ）を動吸振作用により防振
できる。That is, according to this embodiment, there are the following effects. The weight 12 is supported by the suspension member 11, the bending rigidity of the suspension member 11 is used as a spring element, and the internal loss due to bending vibration of the suspension member 11 is used as a resistance element. That is, the suspension member 11
Replaces the two elements of the spring and the resistance, so that the dynamic vibration reducer 10 having a simple structure can be configured. Therefore, the weight 12 and the suspension member 11 are formed so that the natural frequency of the dynamic vibration absorber 10 matches the horizontal primary natural frequency of the building 1.
By fixing the suspension member 11 to the ceiling structure, horizontal vibration (horizontal vibration) of the building 1 can be isolated by a dynamic vibration absorbing action.
【００１８】動吸振機１０が懸架材１１とおもり１２
のみからコンパクトに構成されるものであるから、建物
１の小屋裏空間等に容易に設置できる。The dynamic vibration reducer 10 includes a suspension member 11 and a weight 12.
Since it is configured compactly only by itself, it can be easily installed in the attic space of the building 1.
【００１９】（第２実施例）（図２参照）動吸振器２０
が動吸振器１０と異なる点は、図２に示す如く、懸架材
２１を、芯材２１Ａの４側面に被着材２１Ｂ、２１Ｂ、
２１Ｃ、２１Ｃを接着して積層した複合材にて構成した
ことのみにある。芯材２１Ａとしては、木材、制振性ゴ
ム材、アスファルト系制振材を採用できる。被着材２１
Ｂとしては、鉄板を採用できる。(Second Embodiment) (See FIG. 2) Dynamic Vibration Absorber 20
2 is different from the dynamic vibration absorber 10 in that, as shown in FIG. 2, the suspension member 21 is attached to the four side surfaces of the core member 21A by the adherends 21B and 21B.
It is only composed of a composite material in which 21C and 21C are bonded and laminated. As the core material 21A, wood, damping rubber material, or asphalt damping material can be adopted. Substrate 21
As B, an iron plate can be adopted.
【００２０】即ち、本実施例によれば、第１実施例の動
吸振器１０における、の作用に加え、以下の作用が
ある。That is, according to this embodiment, in addition to the operation of the dynamic vibration reducer 10 of the first embodiment, the following operation is provided.
【００２１】懸架材２１が芯材２１Ａと被着材２１Ｂ、
２１Ｂ、２１Ｃ、２１Ｃとを積層した複合材にて構成さ
れるものとすることにより、懸架材１１に要求される特
性、即ち(a) 水平方向に容易に曲げ振動を生じ、(b) 曲
げによる内部損失を大とし、(c) 鉛直方向にはおもり１
２を安全確実に支持し得ること、をより確実に達成する
ことができる。The suspension member 21 includes a core member 21A and an adherend member 21B,
21B, 21C, and 21C are laminated to form a composite material, so that the suspension member 11 has the required characteristics, that is, (a) bending vibration is easily generated in the horizontal direction, and (b) bending Large internal loss, (c) Weight 1 in the vertical direction
2 can be supported more reliably and reliably.
【００２２】[0022]
【発明の効果】以上のように本発明によれば、建物の水
平振動を防振するため、構成簡素で、工業化住宅等に簡
便かつ安価に採用できる動吸振器を提供することができ
る。As described above, according to the present invention, since the horizontal vibration of the building is isolated, it is possible to provide a dynamic vibration absorber which has a simple structure and can be easily and inexpensively adopted in industrialized houses and the like.
【図１】図１は本発明の第１実施例を示す模式図であ
る。FIG. 1 is a schematic diagram showing a first embodiment of the present invention.
【図２】図２は本発明の第２実施例を示す模式図であ
る。FIG. 2 is a schematic diagram showing a second embodiment of the present invention.
１ 建物 １０ 動吸振器 １１ 懸架材 １２ おもり 1 Building 10 Dynamic Vibration Absorber 11 Suspension Material 12 Weight
Claims (2)
るための建物用動吸振器において、懸架材の下端部にお
もりを取着して構成され、該懸架材の上端部を天井構造
体に緊結固定して該懸架材を吊り下げ、該懸架材の曲げ
振動により吸振することを特徴とする建物用動吸振器。1. A dynamic vibration absorber for a building for suppressing mainly horizontal vibrations of a building, comprising a weight attached to a lower end portion of a suspension member, and an upper end portion of the suspension member being a ceiling structure. A dynamic vibration absorber for a building, which is tightly fixed and hung to suspend the suspension material, and which absorbs vibration by bending vibration of the suspension material.
複合材にて構成される請求項１記載の建物用動吸振器。2. The dynamic vibration absorber for a building according to claim 1, wherein the suspension member is made of a composite material in which two or more members are laminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34315291A JPH05171835A (en) | 1991-12-25 | 1991-12-25 | Dynamic vibration absorber for building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34315291A JPH05171835A (en) | 1991-12-25 | 1991-12-25 | Dynamic vibration absorber for building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05171835A true JPH05171835A (en) | 1993-07-09 |
Family
ID=18359322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34315291A Pending JPH05171835A (en) | 1991-12-25 | 1991-12-25 | Dynamic vibration absorber for building |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05171835A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007032626A (en) * | 2005-07-25 | 2007-02-08 | Toshiba Corp | Dynamic vibration absorbing device for rotating machine |
-
1991
- 1991-12-25 JP JP34315291A patent/JPH05171835A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007032626A (en) * | 2005-07-25 | 2007-02-08 | Toshiba Corp | Dynamic vibration absorbing device for rotating machine |
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