JPH083283B2 - Seismic isolation fireproof structure - Google Patents
Seismic isolation fireproof structureInfo
- Publication number
- JPH083283B2 JPH083283B2 JP1242691A JP24269189A JPH083283B2 JP H083283 B2 JPH083283 B2 JP H083283B2 JP 1242691 A JP1242691 A JP 1242691A JP 24269189 A JP24269189 A JP 24269189A JP H083283 B2 JPH083283 B2 JP H083283B2
- Authority
- JP
- Japan
- Prior art keywords
- seismic isolation
- elastic body
- covering material
- isolation elastic
- deformation
- 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 - Lifetime
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Foundations (AREA)
- Building Environments (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は免震弾性体を備える複数の支柱によって支
持された建造物に係り、特にその免震耐火構造に関す
る。Description: TECHNICAL FIELD The present invention relates to a structure supported by a plurality of columns provided with a seismic isolation elastic body, and more particularly to a seismic isolation and fireproof structure thereof.
［従来の技術］ 近年、ビルディング等の建造物１においては、第４図
〜第６図に示すように、その建造物１を支える複数の支
柱２の上下両分割部分2a,2b間に、ゴム等からなる免震
弾性体３が介装され、かつその弾性体３の上下両面に設
けたフランジ部４を介して支柱２の上下両分割部分2a,2
bに取り付けられており、第６図に示すように、地震に
よる横揺れをその免震弾性体３によって吸収して建造物
１の倒壊を防止するようにしている。[Prior Art] In recent years, in a building 1 such as a building, as shown in FIG. 4 to FIG. 6, rubber is provided between the upper and lower divided portions 2a and 2b of a plurality of columns 2 that support the building 1. A seismic isolation elastic body 3 made of, for example, is interposed, and upper and lower split portions 2a, 2 of the support column 2 are provided with flange portions 4 provided on both upper and lower surfaces of the elastic body 3.
It is attached to b, and as shown in FIG. 6, the seismic isolation elastic body 3 absorbs the rolling caused by the earthquake to prevent the building 1 from collapsing.
［発明が解決しようとする課題］ ところで、これまでの免震弾性体は一般に建造物と基
礎との間に設置されているのみであるため、耐火性能を
要求されることはなかった。しかし近年、敷地の有効利
用を図る等の目的で、建造物の各階における柱頭、柱脚
間等の主要構造体間に免震弾性体を設置して任意の階以
上を免震構造化するためには、免震構造体自身を耐火被
覆して、建築基準法に定める所定の耐火性能と同等以上
の性能を付与することが要求される。例えば、２時間の
間に1050℃まで加熱してその後に放冷するというような
加熱試験に対しては、免震構造体が設計上の耐震性等の
強度性能を失わないことが必要とされる。[Problems to be Solved by the Invention] By the way, since the conventional seismic isolation elastic body is generally installed only between the building and the foundation, no fire resistance is required. However, in recent years, for the purpose of effective use of the site, etc., seismic isolation elastic bodies are installed between main structures such as stigmas and column bases on each floor of the building to seismically isolate any floor or higher. It is required that the seismic isolation structure itself be fire-resistant coated to provide performance equivalent to or higher than the predetermined fire-resistant performance specified by the Building Standards Act. For example, for a heating test such as heating to 1050 ° C for 2 hours and then allowing to cool, it is necessary that the seismic isolation structure does not lose strength performance such as seismic resistance in design. It
この発明は上記の事情を考慮してなされたものであっ
て、その目的は支柱が建築空間内に露出された場合で
も、免震弾性体を被覆しておくことができ、その耐火性
を確保することが可能な建造物の免震耐火構造を提供す
ることにある。The present invention has been made in view of the above circumstances, and its purpose is to ensure that the seismic isolation elastic body can be covered even when the support pillar is exposed in the building space, and its fire resistance is ensured. The purpose of the present invention is to provide a seismic isolation fireproof structure for a building.
［課題を解決するための手段及び作用］ 上記の目的を達成するために、この発明では、免震弾
性体を備える複数の支柱によって支持された建造物にお
いて、前記免震弾性体の外周面全体を、その免震弾性体
の弾性変形に応じて変形可能な被覆材によって包囲する
と共に、その被覆材と免震弾性体との間には免震弾性体
及び被覆材の変形に応じて変形可能な断熱材を収容して
いる。[Means and Actions for Solving the Problem] In order to achieve the above object, in the present invention, in a building supported by a plurality of columns including a seismic isolation elastic body, an entire outer peripheral surface of the seismic isolation elastic body is provided. Is surrounded by a covering material that can be deformed according to the elastic deformation of the seismic isolation elastic body, and can be deformed between the covering material and the seismic isolation elastic body depending on the deformation of the seismic isolation elastic body and the covering material. It contains a wide variety of insulation materials.
従って、免震弾性体は被覆材及び断熱材によって被覆
され、その免震弾性体に対する所要の耐火性が確保され
る。又、地震に伴う横揺れによって免震弾性体が変形し
た場合、それに伴って被覆材及び断熱材が変形する。Therefore, the seismic isolation elastic body is covered with the covering material and the heat insulating material, and the required fire resistance of the seismic isolation elastic body is secured. Further, when the seismic isolation elastic body is deformed due to rolling caused by an earthquake, the covering material and the heat insulating material are also deformed accordingly.
特に、請求項１に係る発明では、被覆材を、可撓性及
び耐火性を有する金属板材により構成している。Particularly, in the invention according to claim 1, the covering material is made of a metal plate material having flexibility and fire resistance.
従って、金属板材は地震のもつ可撓性により前記免震
弾性体の変形に伴って容易に変形し、変形によって破損
することはない。しかも、金属板材自体が耐火性を有し
ていることにより被覆材自体を薄く製作でき、その結
果、軽量化できるので、搬送，施工が容易である。Therefore, the metal plate material is easily deformed by the deformation of the seismic isolation elastic body due to the flexibility of the earthquake, and is not damaged by the deformation. Moreover, since the metal plate material itself has fire resistance, the covering material itself can be manufactured thinly, and as a result, the weight can be reduced, so that transportation and construction are easy.
又、請求項２に係る発明では、被覆材を、セラミック
ファイバーと、難燃性及び柔軟性を有する繊維と、耐火
性を有する芯材とを撚った糸の織物によって構成してい
る。Further, in the invention according to claim 2, the coating material is constituted by a woven fabric of yarn in which a ceramic fiber, a fiber having flame retardancy and flexibility, and a core material having fire resistance are twisted.
セラミックファイバー及び芯材のみで撚ると、セラミ
ックファイバーが細かく切れてしまうが、柔軟性を有す
る繊維を間に介在させることにより、セラミックファイ
バーからなる強度の高い撚り糸ができる。そして、この
撚り糸からなる織物は前記免震弾性体の変形に伴って容
易に変形し、その変形によって破れることはない。しか
も、被覆材自体を軽量かつ薄く製作できるので、搬送，
施工が容易である。施工後の火災で難燃性の繊維が万一
燃えても、織物の一部をなすセラミックファイバーが芯
材から外れることはなく、被覆材の破損が防止される。If only the ceramic fiber and the core material are twisted, the ceramic fiber will be finely cut, but by interposing a flexible fiber between them, a high-strength twisted yarn made of the ceramic fiber can be obtained. The woven fabric made of the twisted yarn is easily deformed with the deformation of the seismic isolation elastic body, and is not broken by the deformation. Moreover, since the covering material itself can be made lightweight and thin,
Construction is easy. Even if the flame-retardant fiber burns by a fire after construction, the ceramic fiber forming a part of the woven fabric does not come off from the core material, and damage to the covering material is prevented.
［実施例］ 以下、この発明を具体化した第一実施例を第１図に従
って詳細に説明する。[Embodiment] A first embodiment of the present invention will be described in detail below with reference to FIG.
免震弾性体３の外周面から所定間隔を隔ててその外周
面を包囲するように、上下のフランジ部４間には、可撓
性及び耐火性を有するステンレス板材により、蛇腹状に
形成された被覆材21が装着されている。被覆材21と免震
弾性体３との間にはアルミナ−シリカ系セラミックス繊
維からなる断熱材22が充填されている。前記被覆材21の
耐熱温度は1100℃である。又、前記断熱材22は、イビデ
ン株式会社製のスーパーバルク（商品名）であり、Si
O2,52％，Al2O3,48％を含み、平均繊維径は２μm,嵩比
重は0.2g/cm3，耐熱温度は1260℃である。A bellows-shaped stainless steel plate material having flexibility and fire resistance was formed between the upper and lower flange portions 4 so as to surround the outer peripheral surface of the seismic isolation elastic body 3 at a predetermined distance. A covering material 21 is attached. A heat insulating material 22 made of alumina-silica ceramic fibers is filled between the covering material 21 and the seismic isolation elastic body 3. The heat resistant temperature of the coating material 21 is 1100 ° C. Further, the heat insulating material 22 is a super bulk (trade name) manufactured by Ibiden Co., Ltd.
It contains O 2 , 52% and Al 2 O 3 , 48%, the average fiber diameter is 2 μm, the bulk specific gravity is 0.2 g / cm 3 , and the heat resistance temperature is 1260 ° C.
上記の被覆材21及び断熱材22は、建造物の構築時、若
しくは駐車場等を構築するために地下工事によって支柱
２が露出された時、免震弾性体３に装着される。従っ
て、両者21,22により、免震弾性体３の耐火性を確保で
きる。又、地震による横揺れ発生時にも、免震弾性体３
の変形に応じて、被覆材21及び断熱材22を変形させるこ
とができ、支柱２からそれらが妄りに落下することがな
い。The covering material 21 and the heat insulating material 22 are attached to the seismic isolation elastic body 3 when a building is constructed or when the pillar 2 is exposed by underground construction for constructing a parking lot or the like. Therefore, the fire resistance of the seismic isolation elastic body 3 can be ensured by the both 21 and 22. In addition, the seismic isolation elastic body 3 will be
The covering material 21 and the heat insulating material 22 can be deformed in accordance with the deformation of (1), and they do not fall off from the pillar 2 indiscriminately.
尚、前記被覆材21については、第２図に示すように、
その中央部分を外方に膨らませることによって、免震弾
性体３の変形に応じて変形するように構成しても良い。Regarding the covering material 21, as shown in FIG.
By bulging the central portion outward, the seismic isolation elastic body 3 may be deformed in accordance with the deformation.
次に、第二実施例について説明すると、第３図
（ａ），（ｂ）に示すように、被覆材31はセラミックフ
ァイバー（CF），難燃スフ綿繊維及び鉄−クロム線製の
芯線からなる撚り糸によって織られたクロスによって構
成されており、前記第一実施例と同様に、その上下両辺
縁部にて前記フランジ部４に固定されている。前記被覆
材31は下記の表に示す特性を有するものである。Next, the second embodiment will be explained. As shown in FIGS. 3 (a) and 3 (b), the covering material 31 is made of ceramic fiber (CF), flame-retardant cotton fiber and iron-chromium wire core wire. It is composed of a cloth woven from twisted yarns and is fixed to the flange portion 4 at both upper and lower edge portions thereof, as in the first embodiment. The coating material 31 has the characteristics shown in the table below.
断熱材32は、前記第一実施例で使用したものと同一組
成のアルミナ−シリカ系セラミックス繊維90重量部に、
無機質バインダー８重量部と有機質バインダー２重量部
とを混合した成形材料によってリング状に成形されてい
る。 The heat insulating material 32 is 90 parts by weight of alumina-silica ceramics fiber having the same composition as that used in the first embodiment.
It is formed into a ring shape with a molding material in which 8 parts by weight of the inorganic binder and 2 parts by weight of the organic binder are mixed.
この断熱材32を成形するには、先ず、前記の各材料を
水と混合し、かつセラミックス繊維を解繊して、約１重
量％のスラリーを調製する。次に、このスラリーを真空
吸引金型に供給してパイプ状に成形し、その成形品が変
形しないように乾燥させる。次いで、リング状に切断す
る。尚、その際、リング状断熱材32の両端面には第３図
（ｃ）に示すように、変形時の各断熱材32の摩耗を防止
し、摺動性を良好にするために、熱伝導性（ヒートブリ
ッジ）を考慮の上、ステンレス等の金属製の摩耗防止板
33を接着固定したり、セラミック系コーティング剤（イ
ビデン株式会社製，商品名イビコート）でコーティング
してもよい。In order to form the heat insulating material 32, first, the above materials are mixed with water, and the ceramic fibers are defibrated to prepare a slurry of about 1% by weight. Next, this slurry is supplied to a vacuum suction mold to be molded into a pipe shape, and dried so that the molded product is not deformed. Then, it is cut into a ring shape. At this time, as shown in FIG. 3 (c), both ends of the ring-shaped heat insulating material 32 are heated in order to prevent wear of each heat insulating material 32 during deformation and to improve slidability. Anti-wear plate made of metal such as stainless steel in consideration of conductivity (heat bridge)
33 may be fixed by adhesion or coated with a ceramic coating agent (trade name: IBICOAT manufactured by IBIDEN Co., Ltd.).
そして、この実施例では、上記の複数の断熱材32が前
記両フランジ４間にて互いに相対移動可能に摺接するよ
うに被覆材31の内側において前記免震弾性体３の外周に
配設されている。Further, in this embodiment, the plurality of heat insulating materials 32 are arranged on the outer periphery of the seismic isolation elastic body 3 inside the covering material 31 so as to slidably contact each other between the flanges 4 so as to be relatively movable. There is.
尚、リング状に切断された断熱材32を免震弾性体３の
外周に配設する方法として、前記両フランジ４が免震弾
性体３と一体で形成されている場合には、例えば前記リ
ング状の断熱材32を２分割して、免震弾性体３の周囲に
配置した後、各分割部分を高温耐火性接着剤（イビデン
株式会社製，商品名イビダイン）で接着固定してもよ
い。As a method of disposing the heat insulating material 32 cut into a ring shape on the outer periphery of the seismic isolation elastic body 3, when the both flanges 4 are formed integrally with the seismic isolation elastic body 3, for example, the ring is used. The heat insulating material 32 may be divided into two and arranged around the seismic isolation elastic body 3, and then each divided portion may be bonded and fixed with a high temperature fire resistant adhesive (trade name: Ibidine, manufactured by IBIDEN Corporation).
従って、第二実施例においても、免震弾性体３に耐火
性を付与することができる。又、第３図（ｂ）に示すよ
うに、地震による横揺れ発生時に、各支柱２の上下両分
割部分2a,2b間に位置ずれが生じて免震弾性体３が変形
する場合には、その変形に応じて断熱材32が水平方向へ
それぞれ移動すると共に、被覆材31が変形する。そのた
め、地震に際しても、免震弾性体３を被覆状態に保持で
きると共に、断熱材32自身の破損も防止できる。又、断
熱材32の両端面には金属製の摩耗防止板33を接着したの
で、断熱材32の移動に伴う摩耗を防止することができ
る。Therefore, also in the second embodiment, the seismic isolation elastic body 3 can be provided with fire resistance. Further, as shown in FIG. 3 (b), when the seismic rolling occurs, when the seismic isolation elastic body 3 is deformed due to the displacement between the upper and lower divided portions 2a and 2b of each support 2, According to the deformation, the heat insulating material 32 moves in the horizontal direction and the covering material 31 deforms. Therefore, even in the event of an earthquake, the seismic isolation elastic body 3 can be held in a covered state, and damage to the heat insulating material 32 itself can be prevented. Further, since the wear preventing plates 33 made of metal are adhered to both end faces of the heat insulating material 32, it is possible to prevent the wear due to the movement of the heat insulating material 32.
尚、この発明は前記各実施例の断熱材の組成及び形状
等に限定されるものではなく、それらを適宜に変更する
ことも可能である。It should be noted that the present invention is not limited to the composition and shape of the heat insulating material in each of the above-mentioned embodiments, and it is possible to appropriately change them.
［発明の効果］ 以上詳述したように、請求項１及び請求項２に係る発
明では、支柱が建築空間内に露出された場合でも、免震
弾性体を被覆して、その耐熱性を確保することができ
る。[Effects of the Invention] As described in detail above, in the inventions according to claim 1 and claim 2, even when the pillar is exposed in the building space, the seismic isolation elastic body is covered to ensure its heat resistance. can do.
特に、請求項１に係る発明では、被覆材を、可撓性及
び耐火性を有する金属板材により構成している。従っ
て、金属板材は自身のもつ可撓性により前記免震弾性体
の変形に伴って容易に変形し、変形によって破損するこ
とはない。しかも、金属板材自体が耐火性を有している
ことにより被覆材自体を薄く製作でき、その結果、軽量
化できるので、搬送，施工が容易である。Particularly, in the invention according to claim 1, the covering material is made of a metal plate material having flexibility and fire resistance. Therefore, the metal plate material is easily deformed by the deformation of the seismic isolation elastic body due to its own flexibility, and is not damaged by the deformation. Moreover, since the metal plate material itself has fire resistance, the covering material itself can be manufactured thinly, and as a result, the weight can be reduced, so that transportation and construction are easy.
又、請求項２に係る発明では、被覆材を、セラミック
ファイバーと、難燃性及び柔軟性を有する繊維と、耐火
性を有する芯材とを撚った糸の織物によって構成してい
る。従って、セラミックファイバーからなる強度の高い
撚り糸ができ、この撚り糸からなる織物は免震弾性体の
変形に伴って容易に変形し、その変形によって破れるこ
とはない。しかも、被覆材自体を軽量かつ薄く製作でき
るので、搬送，施工が容易である。施工後の火災で難燃
性の繊維が万一燃えても、織物の一部をなすセラミック
ファイバーが芯材から外れることはなく、被覆材の破損
を防止することができる。Further, in the invention according to claim 2, the coating material is constituted by a woven fabric of yarn in which a ceramic fiber, a fiber having flame retardancy and flexibility, and a core material having fire resistance are twisted. Therefore, a high-strength twisted yarn made of ceramic fibers is produced, and the woven fabric made of this twisted yarn is easily deformed with the deformation of the seismic isolation elastic body, and is not broken by the deformation. Moreover, since the covering material itself can be manufactured to be lightweight and thin, it can be easily transported and constructed. Even if the flame-retardant fiber burns by a fire after construction, the ceramic fiber forming a part of the woven fabric does not come off from the core material, and the damage to the covering material can be prevented.
第１図はこの発明を具体化した第一実施例における支柱
の部分正面図、第２図は変形例を示す部分正面図、第３
図（ａ）は第二実施例における支柱の部分正断面図、第
３図（ｂ）は同じく横揺れ時における部分正断面図、第
３図（ｃ）は断熱材の拡大断面図、第４図は建造物の説
明図、第５図は支柱の免震弾性体取付け部を示す部分正
面図、第６図は同じく横揺れ時における部分正面図であ
る。 １……建造物、２……支柱、３……免震弾性体、21,31
……被覆材,22,32……断熱材。FIG. 1 is a partial front view of a column in a first embodiment embodying the present invention, FIG. 2 is a partial front view showing a modified example, and FIG.
FIG. 3 (a) is a partial front sectional view of the support column in the second embodiment, FIG. 3 (b) is a partial front sectional view at the time of rolling, and FIG. 3 (c) is an enlarged sectional view of a heat insulating material. The figure is an explanatory view of a building, FIG. 5 is a partial front view showing a seismic isolation elastic body mounting portion of a column, and FIG. 6 is a partial front view at the time of rolling. 1 ... Building, 2 ... Post, 3 ... Seismic isolation elastic body, 21,31
…… Coating material, 22,32 …… Insulation material.
Claims (2)
（２）によって支持された建造物（１）において、前記
免震弾性体（３）の外周面全体を、その免震弾性体
（３）の弾性変形に応じて変形可能な被覆材（21,31）
によって包囲すると共に、その被覆材（21,31）と免震
弾性体（３）との間には免震弾性体（３）及び被覆材
（21,31）の変形に応じて変形可能な断熱材（22,32）を
収容し、前記被覆材（21）を、可撓性及び耐火性を有す
る金属板材により構成したことを特徴とする建造物の免
震耐火構造。1. A building (1) supported by a plurality of columns (2) having seismic isolation elastic bodies (3), wherein the entire outer peripheral surface of the seismic isolation elastic bodies (3) is A covering material (21, 31) that can be deformed according to the elastic deformation of (3)
A heat insulation that is surrounded by the covering material (21, 31) and the seismic isolation elastic body (3) and is deformable according to the deformation of the seismic isolation elastic body (3) and the covering material (21, 31). A seismic isolation fireproof structure for a building, characterized in that the material (22, 32) is housed and the covering material (21) is made of a flexible and fireproof metal plate material.
（２）によって支持された建造物（１）において、前記
免震弾性体（３）の外周面全体を、その免震弾性体
（３）の弾性変形に応じて変形可能な被覆材（21,31）
によって包囲すると共に、その被覆材（21,31）と免震
弾性体（３）との間には免震弾性体（３）及び被覆材
（21,31）の変形に応じて変形可能な断熱材（22,32）を
収容し、前記被覆材（31）を、セラミックファイバー
と、難燃性及び柔軟性を有する繊維と、耐火性を有する
芯材とを撚った糸の織物によって構成したことを特徴と
する建造物の免震耐火構造。2. A building (1) supported by a plurality of columns (2) having a seismic isolation elastic body (3), wherein the entire outer peripheral surface of the seismic isolation elastic body (3) is the seismic isolation elastic body. A covering material (21, 31) that can be deformed according to the elastic deformation of (3)
A heat insulation that is surrounded by the covering material (21, 31) and the seismic isolation elastic body (3) and is deformable according to the deformation of the seismic isolation elastic body (3) and the covering material (21, 31). The material (22, 32) is accommodated, and the covering material (31) is composed of a woven fabric of yarn in which a ceramic fiber, a fiber having flame retardancy and flexibility, and a core material having fire resistance are twisted. A seismic isolation and fire resistant structure for buildings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1242691A JPH083283B2 (en) | 1989-09-19 | 1989-09-19 | Seismic isolation fireproof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1242691A JPH083283B2 (en) | 1989-09-19 | 1989-09-19 | Seismic isolation fireproof structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03107075A JPH03107075A (en) | 1991-05-07 |
| JPH083283B2 true JPH083283B2 (en) | 1996-01-17 |
Family
ID=17092807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1242691A Expired - Lifetime JPH083283B2 (en) | 1989-09-19 | 1989-09-19 | Seismic isolation fireproof structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH083283B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4813871B2 (en) * | 2005-11-01 | 2011-11-09 | 積水化学工業株式会社 | Sleeperwood and sleeper heat-resistant cover |
| JP6013683B2 (en) * | 2012-05-22 | 2016-10-25 | 株式会社三井ハイテック | Method and apparatus for manufacturing laminated iron core |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01154926A (en) * | 1987-12-09 | 1989-06-16 | Sumitomo Rubber Ind Ltd | Earthquakeproof device |
| JPH0625561Y2 (en) * | 1988-02-29 | 1994-07-06 | 昭和電線電纜株式会社 | Seismic isolation isolators |
-
1989
- 1989-09-19 JP JP1242691A patent/JPH083283B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03107075A (en) | 1991-05-07 |
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