JP3092097B2 - Damping double floor structure - Google Patents

Damping double floor structure

Info

Publication number
JP3092097B2
JP3092097B2 JP03205830A JP20583091A JP3092097B2 JP 3092097 B2 JP3092097 B2 JP 3092097B2 JP 03205830 A JP03205830 A JP 03205830A JP 20583091 A JP20583091 A JP 20583091A JP 3092097 B2 JP3092097 B2 JP 3092097B2
Authority
JP
Japan
Prior art keywords
floor
double
elastic
vibration
double floor
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
Application number
JP03205830A
Other languages
Japanese (ja)
Other versions
JPH0552028A (en
Inventor
久眞 赤木
仁 置田
貴治 関
Original Assignee
日本電信電話株式会社
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 日本電信電話株式会社 filed Critical 日本電信電話株式会社
Priority to JP03205830A priority Critical patent/JP3092097B2/en
Publication of JPH0552028A publication Critical patent/JPH0552028A/en
Application granted granted Critical
Publication of JP3092097B2 publication Critical patent/JP3092097B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【産業上の利用分野】本発明は、電子計算機や半導体製
造機器等の設置室の構築に供せられる二重床(一般にフ
リーアクセス床と称する)において、床に発生する上下
振動を低減する制振二重床構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for reducing vertical vibration generated on a floor in a double floor (generally referred to as a free access floor) used for constructing an installation room for electronic computers, semiconductor manufacturing equipment and the like. It relates to a double floor structure.
【0002】[0002]
【従来の技術】図4において、建物1の床には、常時は
周辺道路交通や回転機構を有する機械等により、また地
震時には地震動により上下方向振動が発生する。とく
に、長スパン構造の床スラブ2では図4中破線で示すこ
の上下方向振動は大きくなりがちである。
2. Description of the Related Art In FIG. 4, a vertical vibration is generated on the floor of a building 1 by a road traffic or a machine having a rotating mechanism at all times, and by an earthquake motion during an earthquake. Particularly, in the floor slab 2 having the long span structure, the vertical vibration shown by the broken line in FIG. 4 tends to be large.
【0003】電子計算機や半導体製造機器等は、空調や
配線・配管に対する利便性確保の観点から、通常、二重
床上に設置されるが、これらの機器等をこうした振動に
よる機能障害から守るため、二重床上の振動を低減させ
る免震床(あるいは防振床)と呼ばれる二重床が考えら
れている。
Computers, semiconductor manufacturing equipment, and the like are usually installed on a double floor from the viewpoint of air-conditioning and the convenience of wiring and piping. Double floors called seismic isolation floors (or vibration-isolated floors) that reduce vibration on double floors have been considered.
【0004】一般に二重床は、図5に示すように建物床
スラブ3の上に複数の二重床支柱4を立設し、その二重
床支柱4上端同士間に亙り架け渡すように床パネル5を
載置敷詰める構造であり、フリーアクセス床と呼ばれ
る。免震床は図6のように二重床において、床スラブ3
と二重床支柱4群との間に、床スラブ3から二重床支柱
4群へ伝達される上下方向振動を低減させる弾性体6
群、たとえばバネ及びショックアブソーバー等減衰手段
を介在するものである。
Generally, as shown in FIG. 5, a double floor is provided with a plurality of double floor supports 4 erected on a building floor slab 3, and the double floor supports 4 are bridged between upper ends thereof. This is a structure in which the panel 5 is placed and laid, and is called a free access floor. The seismic isolation floor is a double floor as shown in FIG.
Elastic body 6 for reducing vertical vibration transmitted from floor slab 3 to double floor strut 4 between the first and second floor struts 4
A group, for example, intervening damping means such as a spring and a shock absorber.
【0005】この場合、二重床支柱4群より上部を構造
的に安定させるため、通常、弾性体6群の上に格子梁な
どの構造体7を敷設する。また、二重床支柱4群と床ス
ラブ3間の代わりに、二重床支柱4群の頂部と床パネル
5との間に床スラブ3からの振動の伝達を低減させる弾
性体等を挿入するものもある。
In this case, a structure 7 such as a lattice beam is usually laid on the elastic body 6 in order to structurally stabilize the upper part of the double floor support 4 group. Further, instead of between the double floor support 4 group and the floor slab 3, an elastic body or the like for reducing transmission of vibration from the floor slab 3 is inserted between the top of the double floor support 4 group and the floor panel 5. There are also things.
【0006】[0006]
【発明が解決しようとする課題】いずれにしても、免震
床は床スラブ3と床パネル5との間に振動の伝達を低減
させる材料を挿入し、床スラブ3に発生する振動を床パ
ネル5に伝達させないようにする点に特徴があるが、弾
性体6の挿入により二重床高さが高くなり、また格子梁
等の構造体7を設けるなど一般に構造が複雑で高価なも
のとなっている。
In any case, a material for reducing the transmission of vibration is inserted between the floor slab 3 and the floor panel 5 in the base-isolated floor, and the vibration generated in the floor slab 3 is reduced by the floor panel. However, the insertion of the elastic body 6 increases the double floor height, and the structure is generally complicated and expensive, such as providing a structure 7 such as a lattice beam. ing.
【0007】一方、構造物に発生している振動を低減さ
せる手段として、図7のように構造物8に弾性体9を介
して付加質量10を取付け、その固有振動数(振動周
期)を構造物8のそれと大略同じになるよう設定するこ
とにより、付加質量10に構造物8の振動を打ち消す振
動を発生させて構造物8自体の振動を低減させる方法が
あり、一般に動吸振器と呼ばれている。
On the other hand, as means for reducing the vibration generated in the structure, an additional mass 10 is attached to the structure 8 via an elastic body 9 as shown in FIG. There is a method of reducing the vibration of the structure 8 itself by setting the additional mass 10 so as to substantially cancel the vibration of the structure 8 by setting the vibration so as to be substantially the same as that of the object 8, and is generally called a dynamic vibration absorber. ing.
【0008】二重床上の上下方向振動に対してこの方法
を応用したものが本発明である。この場合、動吸振器を
床スラブ3に設置して床スラブ3の上下振動を低減させ
る一方で、通常のフリーアクセス床を併設することが考
えられる。しかし、このように動吸振器とフリーアクセ
ス床を別々に併設すると、動吸振器が邪魔になって二重
床のもつ空調や配線・配管のための利便性をそこなう恐
れがあり、またそれを避けるため動吸振器を床スラブ3
下に吊り下げることも考えられるが、一般に足場が悪
く、保守性が劣るという問題がある。
The present invention is an application of this method to vertical vibration on a double floor. In this case, it is conceivable to install a dynamic vibration absorber on the floor slab 3 to reduce the vertical vibration of the floor slab 3 and to add a normal free access floor. However, if the dynamic vibration absorber and the free access floor are separately installed in this way, the dynamic vibration absorber may hinder the convenience of the double floor for air conditioning and wiring / piping, Use a dynamic vibration absorber to avoid floor slab 3
Although it is conceivable to hang it underneath, there is a problem that scaffolding is generally poor and maintainability is poor.
【0009】こゝにおいて、本発明は、二重床上に生じ
る上下方向振動を、二重床の利便性をできる限りそこな
わず簡易かつ安価に低減するため、二重床を構成する二
重床支柱に上下方向の動吸振器を組込む制振二重床構造
を提供せんとするものである。
[0009] In the present invention, in order to reduce the vertical vibration generated on the double floor as easily and inexpensively as possible without reducing the convenience of the double floor, the double floor constituting the double floor is provided. It is an object of the present invention to provide a vibration damping double floor structure in which a vertical vibration damper is incorporated into a column.
【0010】[0010]
【課題を解決するための手段】前記課題の解決は、本発
明が次に列挙する新規な特徴的構成手段を採用すること
により達成される。即ち、本発明の第1の特徴は、建物
床スラブ上に二重床支柱のベース部を直接一体固定して
複数の二重床支柱を立設し、該二重床支柱群上端間に亙
り架け渡すように床パネルを載置敷詰める上下一体動構
造の二重床において、該二重床支柱に、付加質量を取付
けた上下方向にバネ特性を有する弾性体を直接取付けて
なる制振二重床構造である。
The above object can be attained by adopting the following novel characteristic constitution means of the present invention. That is, a first feature of the present invention is that a plurality of double-floor struts are erected by directly fixing the base of the double-floor struts directly on a building floor slab, and extending between the upper ends of the double-floor strut groups. In a double floor of a vertically integrated moving structure in which floor panels are placed and laid so as to be bridged, an elastic body having a vertical spring property with an additional mass attached directly to the double floor support is directly attached to the double floor support. It has a floor structure.
【0011】本発明の第2の特徴は、前記第1の特徴に
おいて、前記弾性体と並列に減衰手段を組込んでなる制
振二重床構造である。
A second feature of the present invention is the vibration-damping double floor structure according to the first feature, wherein damping means is incorporated in parallel with the elastic body.
【0012】本発明の第3の特徴は、前記第1又は第2
の特徴における前記弾性体として減衰機能を有する弾性
体を用いてなる制振二重床構造である。
A third feature of the present invention is that the first or the second
A damping double floor structure using an elastic body having a damping function as the elastic body according to the above feature.
【0013】[0013]
【作用】本発明は、前記のような手段を講じ、図1に示
すごとく、建物床スラブ3の上に複数の二重床支柱4を
立設し、その二重床支柱4群上端間に亙り架け渡すよう
に床パネル5を載置敷詰める構造の二重床であるので、
その二重床支柱4に、上下方向にバネ特性を有する弾性
体9を介して付加質量10を取付けることにより、この
部分に床スラブ3に対する動吸振器を構成し、二重床に
発生している上下方向振動を建物床スラブ3ごと低減達
成する。
According to the present invention, a plurality of double-floor struts 4 are erected on a building floor slab 3 as shown in FIG. Since it is a double floor with a structure in which the floor panel 5 is placed and laid so as to span over it,
By attaching an additional mass 10 to the double-floor support 4 via an elastic body 9 having a spring characteristic in the vertical direction, a dynamic vibration absorber for the floor slab 3 is formed at this portion, and the vibration is generated on the double-floor. The vertical vibration of the building floor slab 3 is reduced.
【0014】[0014]
【実施例】本発明の実施例を図面について説明する。図
2は本実施例の拡大中央縦断面、図3は図2中III −II
I 線視相当部分の平面図である。図中、11は二重床支
柱、12は二重床支柱11のベース部、13は二重床支
柱11の上端に螺着したキヤップ形床パネル受け部、1
4は二重床支柱11に螺貫した植込ボルト形弾性体、1
5は円筒ナット形付加質量(おもり)である。
BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 2 is an enlarged central longitudinal section of this embodiment, and FIG.
FIG. 3 is a plan view of a portion corresponding to a line I. In the figure, 11 is a double floor support, 12 is a base portion of the double floor support 11, 13 is a cap-type floor panel receiving portion screwed to the upper end of the double floor support 11, 1
4 is a stud-bolt-type elastic body screwed into the double-floor support 11, 1
5 is a cylindrical nut type additional mass (weight).
【0015】制振二重床は、二重床支柱11のベース部
12を建物床スラブ3にボルトや接着材等により固定
し、これを適当な間隔で複数本並べて、それぞれの上端
の床パネル受け部13上相互間に亙り床パネル5を架け
渡し敷架することにより構成する。ここで、二重床支柱
11には、付加質量15を取付けた弾性体14を固定す
る。弾性体14は上下方向にバネ特性を有する材料であ
れば何でもよく、ゴムや金属バネ等が考えられる。
In the vibration damping double floor, the base portion 12 of the double floor support 11 is fixed to the building floor slab 3 with bolts, adhesives, or the like, and a plurality of these are arranged at appropriate intervals, and the floor panel at the upper end of each floor panel is provided. It is constructed by bridging and laying the floor panel 5 between the receiving portions 13. Here, the elastic body 14 to which the additional mass 15 is attached is fixed to the double floor support 11. The elastic body 14 may be made of any material having a spring characteristic in the vertical direction, such as rubber or metal spring.
【0016】また、バネ特性と同時に弾性体14と並列
に減衰手段(図示せず)を組込んだり、減衰機能を有す
る弾性体を用いて、適当な減衰性能を付加することによ
り、制振能力を高めてもよい。この場合、弾性体14へ
の付加質量15の取付け位置等を変えられるようにして
おき、弾性体14のバネ特性を発揮できる範囲(バネ特
性の大きさ)を調整できるようにすることが必要であ
る。
Further, damping means (not shown) may be incorporated in parallel with the elastic body 14 at the same time as the spring characteristics, or by adding an appropriate damping performance by using an elastic body having a damping function, the vibration damping capacity can be improved. May be increased. In this case, it is necessary to make it possible to change the attachment position of the additional mass 15 to the elastic body 14 and to adjust the range in which the elastic properties of the elastic body 14 can be exhibited (the magnitude of the spring property). is there.
【0017】これに加えて、付加質量15の質量を変え
られるようにしておくとなおよい。そうしておいて二重
床を構成した後に、弾性体14のバネ特性の大きさを調
整し、さらに場合によっては付加質量15の大きさを調
整して、付加質量15の上下方向固有振動数を建物床ス
ラブ3の上下方向固有振動数と大略同じになるようにす
る。
In addition, it is more preferable that the mass of the additional mass 15 can be changed. Then, after the double floor is formed, the magnitude of the spring characteristic of the elastic body 14 is adjusted, and in some cases, the magnitude of the additional mass 15 is adjusted, and the vertical natural frequency of the additional mass 15 is adjusted. Is substantially equal to the vertical natural frequency of the building floor slab 3.
【0018】このような、構造をもった二重床を構成す
ることにより、弾性体14及び付加質量15の部分で建
物床スラブ3に生じる上下方向振動に対して動吸振器の
役割を果すため、床スラブ3の上下方向振動の低減に効
果が生じ、その上の二重床も同時に振動が低減される。
もちろん、二重床を構成している全ての支柱11群に付
加質量15を取付ける必要はなく、制振したい部位の支
柱11の適当な位置のものに付加すればよい。
By forming a double floor having such a structure, the elastic body 14 and the additional mass 15 serve as a dynamic vibration absorber against vertical vibrations generated in the building floor slab 3 by the portion. Thus, the effect of reducing the vertical vibration of the floor slab 3 is obtained, and the vibration of the double floor thereon is also reduced.
Of course, it is not necessary to attach the additional mass 15 to all the columns 11 constituting the double floor, and it is sufficient to add the additional mass 15 to the column at an appropriate position on the portion to be damped.
【0019】[0019]
【発明の効果】かくして、本発明では二重床構造自体が
動吸振器を構成することになるため、二重床上に生じる
上下方向振動を、二重床の利便性をそこなわず簡易かつ
安価に、建物床スラブの振動ごと低減することができる
という利点がある。
As described above, according to the present invention, since the double floor structure itself constitutes a dynamic vibration absorber, the vertical vibration generated on the double floor can be reduced simply and inexpensively without deteriorating the convenience of the double floor. Furthermore, there is an advantage that the vibration of the building floor slab can be reduced.
【0020】このため、二重床上の電子計算機や半導体
製造機器等を、常時の周辺道路交通や回転機構を有する
機械等に伴う振動や地震時の振動による機能障害から守
るために有用であり、とくに上下方向振動の大きくなり
がちな長スパン構造の床スラブに対しては極めて有効で
ある等優れた効用性、有用性を発揮する。
For this reason, it is useful to protect the computer and the semiconductor manufacturing equipment on the double floor from the functional obstacles caused by the vibrations caused by the surrounding road traffic, the machinery having the rotating mechanism, etc. and the vibration at the time of the earthquake, In particular, it exhibits excellent utility and usefulness, such as being extremely effective for floor slabs having a long span structure, which tends to have large vertical vibrations.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の原理図である。FIG. 1 is a principle diagram of the present invention.
【図2】本発明の実施例を示す拡大中央縦断面図であ
る。
FIG. 2 is an enlarged central longitudinal sectional view showing an embodiment of the present invention.
【図3】図2中III −III 線視相当部分の平面図であ
る。
FIG. 3 is a plan view of a part corresponding to the line III-III in FIG. 2;
【図4】建物の断面模式図である。FIG. 4 is a schematic sectional view of a building.
【図5】二重床(フリーアクセス床)の縦断面図であ
る。
FIG. 5 is a longitudinal sectional view of a double floor (free access floor).
【図6】免震床の縦断面図である。FIG. 6 is a vertical sectional view of a base-isolated floor.
【図7】動吸振器の模式図である。FIG. 7 is a schematic view of a dynamic vibration absorber.
【符号の説明】[Explanation of symbols]
1…建物 2…長スパン構造床スラブ 3…床スラブ 4,11…二重床支柱 5…床パネル 6,9,14…弾性体 7…構造体 8…構造物 10,15…付加質量 12…ベース部 13…床パネル受け部 DESCRIPTION OF SYMBOLS 1 ... Building 2 ... Long span structural floor slab 3 ... Floor slab 4, 11 ... Double floor support 5 ... Floor panel 6, 9, 14 ... Elastic body 7 ... Structure 8 ... Structure 10, 15 ... Additional mass 12 ... Base part 13: Floor panel receiving part
フロントページの続き (56)参考文献 特開 平4−140362(JP,A) (58)調査した分野(Int.Cl.7,DB名) E04F 15/024 602 E04F 15/18 601 E04H 9/02 341 Continuation of front page (56) References JP-A-4-140362 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) E04F 15/024 602 E04F 15/18 601 E04H 9/02 341

Claims (3)

    (57)【特許請求の範囲】(57) [Claims]
  1. 【請求項1】建物床スラブ上に二重床支柱のベース部を
    直接一体固定して複数の二重床支柱を立設し、該二重床
    支柱群上端間に亙り架け渡すように床パネルを載置敷詰
    める上下一体動構造の二重床において、該二重床支柱
    に、付加質量を取付けた上下方向にバネ特性を有する弾
    性体を直接取付けることを特徴とする制振二重床構造
    A plurality of double-floor struts are erected by directly fixing a base of a double-floor strut directly on a building floor slab, and a floor panel is spanned over the upper end of the double-floor strut group. Characterized in that an elastic body having a spring characteristic in a vertical direction to which an additional mass is attached is directly attached to the double-floor strut,
  2. 【請求項2】前記弾性体と並列に減衰手段を組込むこと
    を特徴とする請求項1記載の制振二重床構造
    2. The vibration damping double floor structure according to claim 1, wherein damping means is incorporated in parallel with said elastic body.
  3. 【請求項3】前記弾性体として減衰機能を有する弾性体
    を用いることを特徴とする請求項1又は2記載の制振二
    重床構造
    3. The vibration damping double floor structure according to claim 1, wherein an elastic body having a damping function is used as said elastic body.
JP03205830A 1991-08-16 1991-08-16 Damping double floor structure Expired - Fee Related JP3092097B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03205830A JP3092097B2 (en) 1991-08-16 1991-08-16 Damping double floor structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03205830A JP3092097B2 (en) 1991-08-16 1991-08-16 Damping double floor structure

Publications (2)

Publication Number Publication Date
JPH0552028A JPH0552028A (en) 1993-03-02
JP3092097B2 true JP3092097B2 (en) 2000-09-25

Family

ID=16513419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03205830A Expired - Fee Related JP3092097B2 (en) 1991-08-16 1991-08-16 Damping double floor structure

Country Status (1)

Country Link
JP (1) JP3092097B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007100403A (en) * 2005-10-05 2007-04-19 Takenaka Komuten Co Ltd Floor bearing member and double floor
JP2007132081A (en) * 2005-11-10 2007-05-31 Bridgestone Corp Floor structure
JP4806253B2 (en) * 2005-11-15 2011-11-02 株式会社ブリヂストン Floor structure
JP2008095397A (en) * 2006-10-12 2008-04-24 Bridgestone Corp Floor structure
JP5102598B2 (en) 2007-12-10 2012-12-19 株式会社ブリヂストン Floor support and floor structure
CN110657192A (en) * 2019-09-24 2020-01-07 涂建维 Vibration isolation device based on tuned mass damper
KR102102364B1 (en) * 2019-12-13 2020-04-28 김창재 Aseismicity apparatus for structure and construction methods for earthquake-proof using the same

Also Published As

Publication number Publication date
JPH0552028A (en) 1993-03-02

Similar Documents

Publication Publication Date Title
US4565039A (en) Floor structure for reducing vibration
JP2001521079A (en) Method and apparatus for controlling structural displacement, acceleration and seismic force
JP3092097B2 (en) Damping double floor structure
JP2005090101A (en) Seismic response control structure
JP2516575B2 (en) Frame built-in vibration control device
JP3203374B2 (en) Double floor vibration damping device
JP3326228B2 (en) Double floor vibration suppressor
JPH05311921A (en) Damping device
JP3326224B2 (en) Double floor vibration suppressor
JPH07252967A (en) Vibration prevention structure
JP3270960B2 (en) Damping building
JPH0932261A (en) Base isolation floor structure
JP3338920B2 (en) Seismic isolation structure
JP3218529B2 (en) Damping structure
JPH10169241A (en) Base-isolated building
JP2582637Y2 (en) Floor damping device
JP2000345732A (en) Hybrid type vibration control method and vibration control structure
JP3684845B2 (en) Building
JP2003097086A (en) Base isolation building and construction method therefor
JP2004162319A (en) Earthquake damping structure having basement
JP3814748B2 (en) High attenuation frame of building
JPH09195566A (en) Vibration control structure of building
JP3508388B2 (en) Long period control structure
JP3218527B2 (en) Damping structure
JP3116824B2 (en) Beam damper structure

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees