JP6380928B2 - Damping pad and seismic isolation construction method - Google Patents

Damping pad and seismic isolation construction method Download PDF

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JP6380928B2
JP6380928B2 JP2014135376A JP2014135376A JP6380928B2 JP 6380928 B2 JP6380928 B2 JP 6380928B2 JP 2014135376 A JP2014135376 A JP 2014135376A JP 2014135376 A JP2014135376 A JP 2014135376A JP 6380928 B2 JP6380928 B2 JP 6380928B2
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damping pad
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support
elastic body
equipment
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JP2015072062A (en
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規久男 杉田
規久男 杉田
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規久男 杉田
規久男 杉田
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Description

本発明は、ゲル状弾性体により重量物の振動エネルギーを吸収する制振パッド、および、この制振パッドを用いた重量物の免震施工方法に関する。   The present invention relates to a vibration damping pad that absorbs vibration energy of a heavy object by a gel-like elastic body, and a seismic isolation construction method for a heavy object using the vibration damping pad.

従来、図７に示すような制振パッドが知られている。この制振パッド５１は、地震に伴う重量物の振動を吸収するゲル状弾性体５２と、ゲル状弾性体５２が押し潰されないように重量物の荷重を支承する支持体５３とを備えている。支持体５３は、直径がゲル状弾性体５２の厚さよりも大きい直径を有する球形に形成され、頂部が露出する状態でゲル状弾性体５２に埋設されている。   Conventionally, a vibration damping pad as shown in FIG. 7 is known. The vibration-damping pad 51 includes a gel-like elastic body 52 that absorbs vibrations of heavy objects caused by an earthquake, and a support body 53 that supports a load of heavy objects so that the gel-like elastic bodies 52 are not crushed. . The support 53 is formed in a spherical shape having a diameter larger than the thickness of the gel elastic body 52, and is embedded in the gel elastic body 52 with the top portion exposed.

免震工事にあたっては、図８に示すように、複数の制振パッド５１を床面Ｆに接着し、制振パッド５１の上に重量物Ｗを載せる。床面Ｆが傾斜や段差によって水平となっていない場合は、重量物Ｗの高所に打撃を加え、制振パッド５１の支持体５３を潰す。そして、複数個所の制振パッド５１で支持体５３を塑性変形させ、ゲル状弾性体５２を圧縮変形させて、重量物Ｗを水平に据え付ける。   In the seismic isolation work, as shown in FIG. 8, a plurality of damping pads 51 are bonded to the floor surface F, and a heavy object W is placed on the damping pads 51. When the floor surface F is not horizontal due to an inclination or a level difference, the heavy object W is hit at a high place and the support 53 of the vibration damping pad 51 is crushed. Then, the support body 53 is plastically deformed by the damping pads 51 at a plurality of locations, the gel-like elastic body 52 is compressively deformed, and the heavy object W is installed horizontally.

なお、特許文献１には、図７に示すような制振パッドを用いて、設備機器類の転倒を防止する方法が提案されている。   Note that Patent Document 1 proposes a method for preventing the equipment equipment from toppling over by using a damping pad as shown in FIG.

国際公開第WO/2012/172819号International Publication No. WO / 2012/172819

ところが、従来の制振パッド５１によると、支持体５３がゲル状弾性体５２の厚さよりも大きな直径で形成されているので、重量物を水平に据え付けるためには、複数個所の支持体５３を潰す必要があった。特に、生産ラインに設備された機器類の場合は、一台につき少なくとも４枚の制振パッド５１を使用するため、ライン全体の免震工事に際し、設備機器のレベリング作業に多大な手間がかかるという問題点があった。   However, according to the conventional vibration-damping pad 51, the support 53 is formed with a diameter larger than the thickness of the gel elastic body 52. It was necessary to crush. In particular, in the case of equipment installed in the production line, since at least four damping pads 51 are used per unit, it takes a lot of work to level the equipment during the seismic isolation work for the entire line. There was a problem.

そこで、本発明の目的は、重量物のレベリング作業を容易に行うことができる制振パッドと、この制振パッドを用いた重量物の免震施工方法を提供することにある。   SUMMARY OF THE INVENTION An object of the present invention is to provide a vibration damping pad that can easily perform a leveling operation of a heavy object, and a method for isolating heavy objects using the vibration damping pad.

上記課題を解決するために、本発明は、次のような制振パッドおよび免震施工方法を提供する。
（１）ゲル状弾性体に塑性変形可能な支持体を埋設した制振パッドにおいて、支持体をゲル状弾性体の高さよりも低く形成し、ゲル状弾性体が重量物の荷重を支持体よりも先に受けるように構成したことを特徴とする制振パッド。 In order to solve the above problems, the present invention provides the following vibration damping pad and seismic isolation construction method.
(1) In a vibration-damping pad in which a plastically deformable support is embedded in a gel-like elastic body, the support is formed lower than the height of the gel-like elastic body. The vibration-damping pad is characterized in that it is configured to be received first.

（２）支持体は、ゲル状弾性体が圧縮変形した後に重量物の荷重を受ける平坦面を備えたことを特徴とする上記１記載の制振パッド。 (2) The vibration-damping pad according to (1) above, wherein the support has a flat surface that receives a load of a heavy object after the gel elastic body is compressed and deformed.

（３）支持体が、高さの異なる内外複数のコアを含むことを特徴とする上記１又は２に記載の制振パッド。 (3) The vibration damping pad according to 1 or 2 above, wherein the support includes a plurality of cores having different heights.

（４）内側のコアと外側のコアとの間に空隙部を形成したことを特徴とする上記３に記載の制振パッド。 (4) The vibration-damping pad as described in 3 above, wherein a gap is formed between the inner core and the outer core.

（５）上記１〜４の何れか一つに記載の制振パッドを床面と重量物との間に介装し、重量物の荷重でゲル状弾性体を圧縮変形させた後に、支持体により重量物の荷重を受けることを特徴とする免震施工方法。 (5) The vibration-damping pad according to any one of 1 to 4 described above is interposed between the floor surface and a heavy object, and the support is supported after compressing and deforming the gel-like elastic body with a heavy load. A seismic isolation method characterized by receiving heavy loads.

（６）ゲル状弾性体に塑性変形可能な支持体を埋設した制振パッドを用意し、制振パッドの少なくとも下面および／または床面に接着剤を塗布し、接着剤を介して制振パッドを床面上に配置し、制振パッドの上に設備機器を載せ、設備機器の荷重を制振パッドで受けることを特徴とする免震施工方法。 (6) A vibration-damping pad in which a plastically deformable support is embedded in a gel-like elastic body is prepared, and an adhesive is applied to at least the lower surface and / or the floor surface of the vibration-damping pad. A seismic isolation method characterized by placing the equipment on the floor, placing the equipment on the damping pad, and receiving the load of the equipment with the damping pad.

（７）制振パッドがゲル状弾性体を圧縮変形させた状態で設備機器の荷重を受けることを特徴とする上記６に記載の免震施工方法。 (7) The seismic isolation construction method as described in (6) above, wherein the vibration-damping pad receives the load of the equipment in a state where the gel-like elastic body is compressed and deformed.

本発明の免震パッドは、ゲル状弾性体が重量物の荷重を支持体よりも先に受けるように構成されているので、支持体を塑性変形させる手間を減らし、重量物のレベリング作業を容易に行うことができるという効果がある。また、本発明の免震施工方法は、レベリング作業が容易となるので、多数台の設備機器が設置された生産ラインの免震工事に好ましく適用できるという効果がある。   The seismic isolation pad according to the present invention is configured such that the gel-like elastic body receives the load of the heavy object before the support body, so that the effort for plastic deformation of the support body is reduced and the leveling operation of the heavy object is facilitated. There is an effect that can be performed. Moreover, since the seismic isolation construction method of the present invention facilitates leveling work, there is an effect that it can be preferably applied to seismic isolation work on a production line in which a large number of equipment is installed.

さらに、本発明の免震施工方法によれば、制振パッドの上に設備機器を載せる前に、制振パッドおよび／または床面に接着剤を塗布するので、接着剤の粘性を利用して、設備機器を床面上で簡単に位置決めできるとともに、接着剤の塗布量を考慮することで、設備機器のレベリング作業を容易に実施できるという効果がある。   Further, according to the seismic isolation method of the present invention, the adhesive is applied to the vibration damping pad and / or the floor surface before placing the equipment on the vibration damping pad, so the viscosity of the adhesive is utilized. The equipment can be easily positioned on the floor, and the leveling operation of the equipment can be easily performed by considering the amount of adhesive applied.

本発明の一実施形態を示す設備機器の正面図である。It is a front view of the equipment shown in one embodiment of the present invention. 図１の設備機器に用いられる制振パッドの斜視および平面図である。It is the perspective view and top view of a damping pad used for the equipment of FIG. 図２の制振パッドを用いた免震施工方法を示す断面図である。It is sectional drawing which shows the seismic isolation construction method using the damping pad of FIG. 制振パッドの変更例を示す斜視および断面図である。It is the perspective view and sectional drawing which show the example of a change of a damping pad. 図４の制振パッドを用いた免震施工方法を示す断面図である。It is sectional drawing which shows the seismic isolation construction method using the damping pad of FIG. 接着剤を用いた免震施工方法を示す断面図である。It is sectional drawing which shows the seismic isolation construction method using an adhesive agent. 従来の制振パッドを示す斜視図である。It is a perspective view which shows the conventional damping pad. 従来の免震施工方法を示す断面図である。It is sectional drawing which shows the conventional seismic isolation construction method.

以下、本発明の実施形態を図面に基づいて説明する。図１に示すように、重量物としての設備機器１は架台２を備え、架台２に複数本の脚部３が設けられている。脚部３は、高さ調節機構を備えず、免震装置４を介して床面Ｆ上に支持されている。免震装置４は、床面Ｆに設置される制振パッド５と、制振パッド５を加圧する加圧プレート６とを備え、地震に伴う設備機器１および架台２の転倒を防止するように構成されている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the equipment 1 as a heavy object includes a gantry 2, and the gantry 2 is provided with a plurality of legs 3. The leg 3 is not provided with a height adjusting mechanism and is supported on the floor surface F via the seismic isolation device 4. The seismic isolation device 4 includes a vibration damping pad 5 installed on the floor surface F and a pressure plate 6 that pressurizes the vibration damping pad 5 so as to prevent the equipment 1 and the gantry 2 from falling over due to the earthquake. It is configured.

図２に示すように、制振パッド５は、重量物の振動を吸収するゲル状弾性体７と、設備機器１の荷重を支承する支持体８とを備えている。ゲル状弾性体７の表裏両面には粘着層７ａ，７ｂが設けられ、裏面粘着層７ｂより制振パッド５が床面Ｆに接着され、表面粘着層７ａにより加圧プレート６が制振パッド５に接着される（図３参照）。   As shown in FIG. 2, the damping pad 5 includes a gel-like elastic body 7 that absorbs vibrations of heavy objects and a support body 8 that supports the load of the equipment 1. Adhesive layers 7a and 7b are provided on both front and back surfaces of the gel elastic body 7, and the damping pad 5 is bonded to the floor F from the back adhesive layer 7b, and the pressure plate 6 is attached to the damping pad 5 by the surface adhesive layer 7a. (See FIG. 3).

支持体８は、ゲル状弾性体７よりも硬質の金属や樹脂等の塑性変形可能な材料で円柱状に形成され、ゲル状弾性体７の中心部に埋設されている。支持体８の高さはゲル状弾性体７の高さよりも低く設定され、制振パッド５の自然状態で、支持体８の上面８ａがゲル状弾性体７の表面粘着層７ａよりも下側に位置する。また、支持体８の上面８ａは平坦面となっていて、制振パッド５上に設備機器１が載置されたときに、ゲル状弾性体７が圧縮変形した後に、平坦面８ａが設備機器１の荷重を受けることで、支持体８がゲル状弾性体７よりも遅く塑性変形するようになっている。   The support 8 is formed in a cylindrical shape from a material that is plastically deformable, such as a metal or resin harder than the gel elastic body 7, and is embedded in the center of the gel elastic body 7. The height of the support 8 is set lower than the height of the gel elastic body 7, and the upper surface 8 a of the support 8 is lower than the surface adhesive layer 7 a of the gel elastic body 7 in the natural state of the vibration damping pad 5. Located in. Further, the upper surface 8a of the support 8 is a flat surface, and when the equipment 1 is placed on the damping pad 5, the flat surface 8a becomes the equipment after the gel-like elastic body 7 is compressed and deformed. By receiving the load of 1, the support 8 is plastically deformed later than the gel elastic body 7.

なお、支持体８の形状は、円柱形状に限定されず、角柱形状のほか、立方体形状、直方体形状とすることも可能である。また、図２（ｂ）に示すように、支持体８の上面８ａに、制振パッド５のメーカ名を表すロゴ・マーク９を設けることもできる。   Note that the shape of the support 8 is not limited to a cylindrical shape, and may be a cubic shape or a rectangular parallelepiped shape in addition to a prismatic shape. Further, as shown in FIG. 2B, a logo mark 9 representing the manufacturer name of the vibration damping pad 5 can be provided on the upper surface 8 a of the support 8.

次に、上記構成の制振パッド５を用いた免震施工方法について説明する。図３に示すように、生産ラインに既設の設備機器１の免震工事にあたっては、まず、脚部３と同数の制振パッド５を用意する。次に、図３（ａ）に示すように、設備機器１を床面Ｆから持ち上げ、脚部３の足跡部位に制振パッド５を配置する。そして、ゲル状弾性体７の裏面粘着層７ｂを床面Ｆに接着し、表面粘着層１５ａに加圧プレート６を接着し、その加圧プレート６の上に脚部３を載せる。   Next, the seismic isolation construction method using the vibration damping pad 5 having the above configuration will be described. As shown in FIG. 3, in the seismic isolation work for the existing equipment 1 on the production line, first, the same number of vibration damping pads 5 as the legs 3 are prepared. Next, as shown in FIG. 3A, the equipment 1 is lifted from the floor surface F, and the vibration-damping pad 5 is disposed on the footprint portion of the leg 3. And the back surface adhesion layer 7b of the gel-like elastic body 7 is adhere | attached on the floor surface F, the pressure plate 6 is adhere | attached on the surface adhesion layer 15a, and the leg part 3 is mounted on the pressure plate 6. FIG.

脚部３が加圧プレート６上に載ると、図３（ｂ）に示すように、設備機器１の荷重で制振パッド５が圧縮される。このとき、支持体８がゲル状弾性体７よりも低く形成されているので、ゲル状弾性体７が設備機器１の荷重を支持体８よりも先に受ける。このため、床面Ｆが水平となっていない場合に、その高低差が複数箇所のゲル状弾性体７の変形によって吸収される。したがって、従来と比較し、支持体８を塑性変形させる手間を減らし、設備機器１のレベリング作業を短時間に完了することができる。   When the leg 3 is placed on the pressure plate 6, the damping pad 5 is compressed by the load of the equipment 1 as shown in FIG. At this time, since the support body 8 is formed lower than the gel elastic body 7, the gel elastic body 7 receives the load of the equipment 1 before the support body 8. For this reason, when the floor surface F is not horizontal, the height difference is absorbed by the deformation of the gel-like elastic bodies 7 at a plurality of locations. Therefore, compared with the prior art, the effort of plastically deforming the support 8 can be reduced, and the leveling operation of the equipment 1 can be completed in a short time.

図４、図５は制振パッドの変更例を示す。この制振パッド１１では、支持体１２が内外２つの塑性変形可能なコア１２Ａ，１２Ｂを備えている。内側コア１２Ａは外側コア１２Ｂよりも低い円柱状に形成され、外側コア１２Ｂが内側コア１２Ａを包囲する円筒状に形成されている。コア１２Ａ，１２Ｂの間には空隙部１３が形成され、空隙部１３によってコア１２Ａ，１２Ｂの変形が許容される。   4 and 5 show examples of changing the damping pad. In this vibration damping pad 11, a support 12 includes two cores 12A and 12B that can be plastically deformed inside and outside. The inner core 12A is formed in a columnar shape lower than the outer core 12B, and the outer core 12B is formed in a cylindrical shape surrounding the inner core 12A. A gap portion 13 is formed between the cores 12A and 12B, and the gap portion 13 allows deformation of the cores 12A and 12B.

設備機器１の免震工事に際しては、図２に示した制振パッド５と同じ施工方法を採用できる。図５（ｂ）に示すように、設備機器１の荷重が加圧プレート６を介して制振パッド１１に作用すると、まず、ゲル状弾性体７が圧縮変形し、次に、外側コア１２Ｂが塑性変形し、続いて、内側コア１２Ａが荷重を受ける。したがって、この制振パッド１１によれば、特に、質量が大きい設備機器１の場合に、２つのコア１２Ａ，１２Ｂが床面Ｆの形状に順応して制振パッド１１の高さを変え、高度の剛性と制振作用を発揮する。   In the seismic isolation work of the equipment 1, the same construction method as that of the vibration damping pad 5 shown in FIG. 2 can be adopted. As shown in FIG. 5 (b), when the load of the equipment 1 acts on the vibration damping pad 11 via the pressure plate 6, the gel-like elastic body 7 is first compressed and deformed, and then the outer core 12B is Then, the inner core 12A receives a load. Therefore, according to this damping pad 11, particularly in the case of the equipment 1 having a large mass, the two cores 12A and 12B change the height of the damping pad 11 in accordance with the shape of the floor surface F, and the altitude It exhibits the rigidity and vibration control action.

なお、コアの個数は２つに限定されず、３個、４個またはそれ以上とすることができる。また、内側のコアを高く、外側のコアを低く形成してもよい。その他、本発明は上記実施形態に限定されるものではなく、発明の趣旨を逸脱しない範囲で各部の形状や構成を適宜に変更して実施することも可能である。   Note that the number of cores is not limited to two, and may be three, four, or more. Further, the inner core may be formed high and the outer core may be formed low. In addition, the present invention is not limited to the above-described embodiment, and can be carried out by appropriately changing the shape and configuration of each part without departing from the spirit of the invention.

次に、接着剤を用いた免震施工方法について説明する。まず、図６（ａ）に示すように、ゲル状弾性体７に塑性変形可能な支持体８が埋設された制振パッド５を用意する。次に、制振パッド５の下面に接着剤１７を塗布する。接着剤１７としては、設備機器１の種類や重量または床面Ｆの材質に適った各種の接着剤を使用できる。また、接着剤１７を床面Ｆに塗布してもよく、制振パッド５と床面Ｆの両方に塗布してもよい。また、接着剤１７を制振パッド５の下面と上面の両方に塗布することもできる。   Next, a seismic isolation method using an adhesive will be described. First, as shown in FIG. 6A, a vibration-damping pad 5 in which a support body 8 that can be plastically deformed is embedded in a gel-like elastic body 7 is prepared. Next, an adhesive 17 is applied to the lower surface of the vibration damping pad 5. As the adhesive 17, various adhesives suitable for the type and weight of the equipment 1 or the material of the floor surface F can be used. In addition, the adhesive 17 may be applied to the floor surface F, or may be applied to both the damping pad 5 and the floor surface F. Further, the adhesive 17 can be applied to both the lower surface and the upper surface of the vibration damping pad 5.

続いて、図６（ｂ）に示すように、接着剤１７を介して制振パッド５を床面Ｆの上に配置する。その後、制振パッド５の上に加圧プレート６を接合し、加圧プレート６の上に設備機器１の脚部３を載せる。そして、接着剤１７を固化させ、設備機器１の荷重によりゲル状弾性体５を圧縮変形させ、この状態で制振パッド５により設備機器１の荷重を受ける。こうすれば、接着剤１７の粘性を利用して、設備機器１を床面上で簡単に位置決めできる。また、接着剤１７の塗布量または厚さを加減することで、設備機器１のレベリング作業を容易に行うこともできる。   Subsequently, as shown in FIG. 6 (b), the damping pad 5 is disposed on the floor surface F via the adhesive 17. Thereafter, the pressure plate 6 is bonded onto the vibration damping pad 5, and the leg portion 3 of the equipment 1 is placed on the pressure plate 6. Then, the adhesive 17 is solidified, the gel elastic body 5 is compressed and deformed by the load of the equipment device 1, and the load of the equipment device 1 is received by the vibration damping pad 5 in this state. In this way, the equipment 1 can be easily positioned on the floor surface using the viscosity of the adhesive 17. Moreover, the leveling operation | work of the installation equipment 1 can also be easily performed by adjusting the application quantity or thickness of the adhesive agent 17.

１ 設備機器
４ 免震装置
５ 制振パッド
６ 加圧プレート
７ ゲル状弾性体
８ 支持体
８ａ 平坦面
１１ 制振パッド
１２ 支持体
１２Ａ 内側コア
１２Ｂ 外側コア
１３ 空隙部
１７ 接着剤
Ｆ 床面 DESCRIPTION OF SYMBOLS 1 Equipment 4 Seismic isolation device 5 Damping pad 6 Pressure plate 7 Gel-like elastic body 8 Support body 8a Flat surface 11 Damping pad 12 Support body 12A Inner core 12B Outer core 13 Cavity 17 Adhesive F Floor surface

Claims (7)

ゲル状弾性体に塑性変形可能な支持体を埋設した制振パッドにおいて、支持体がゲル状弾性体よりも低い柱状の中実材を含み、ゲル状弾性体が重量物の荷重を支持体よりも先に受け、ゲル状弾性体が圧縮変形した後に、支持体が重量物の荷重を受けるように構成されていることを特徴とする制振パッド。 In the damping pads embedded plastically deformable support gel-like elastic material, comprises a solid material in a columnar support had lower than the gel-like elastic material, a load of a gel-like elastic body is heavy support receiving before the damping pads gel elastic body after the compressive deformation, the support is characterized in that it is configured so that under a load of heavy. 前記支持体は、ゲル状弾性体が圧縮変形した後に重量物の荷重を受ける平坦面を備えた請求項１記載の制振パッド。   The vibration damping pad according to claim 1, wherein the support includes a flat surface that receives a heavy load after the gel-like elastic body is compressed and deformed. 前記支持体が、高さの異なる内側コアと外側コアを備え、内側コアが外側コアよりも低い中実材で形成されている請求項１又は２記載の制振パッド。 The vibration damping pad according to claim 1 or 2, wherein the support includes an inner core and an outer core having different heights , and the inner core is formed of a solid material lower than the outer core . 前記内側コアと前記外側コアとの間に空隙部が形成されている請求項３記載の制振パッド。 Damping pad of claim 3, wherein the air gap is formed between the inner core and the outer core. 請求項１〜４の何れか一項に記載の制振パッドを床面と重量物との間に介装し、重量物の荷重で前記ゲル状弾性体を圧縮変形させた後に、前記支持体により重量物の荷重を受けることを特徴とする免震施工方法。   The support pad after the vibration-damping pad according to any one of claims 1 to 4 is interposed between a floor surface and a heavy object, and the gel elastic body is compressed and deformed by a load of the heavy object. A seismic isolation method characterized by receiving heavy loads. 請求項１〜４の何れか一項に記載の制振パッドを用意し、制振パッドの少なくとも下面および／または床面に接着剤を塗布し、接着剤を介して制振パッドを床面上に配置し、制振パッドの上に設備機器を載せ、設備機器の荷重を制振パッドで受けることを特徴とする免震施工方法。 A damping pad according to any one of claims 1 to 4 is prepared, an adhesive is applied to at least a lower surface and / or a floor surface of the damping pad, and the damping pad is placed on the floor surface via the adhesive. The seismic isolation construction method is characterized in that the equipment is placed on the damping pad, and the load of the equipment is received by the damping pad. 前記制振パッドがゲル状弾性体を圧縮変形させた状態で設備機器の荷重を受ける請求項６記載の免震施工方法。   The seismic isolation construction method according to claim 6, wherein the vibration-damping pad receives a load of equipment in a state where the gel-like elastic body is compressed and deformed.
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