JP2012136914A - Fireproof structure for base-isolating device - Google Patents

Fireproof structure for base-isolating device Download PDF

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JP2012136914A
JP2012136914A JP2010291667A JP2010291667A JP2012136914A JP 2012136914 A JP2012136914 A JP 2012136914A JP 2010291667 A JP2010291667 A JP 2010291667A JP 2010291667 A JP2010291667 A JP 2010291667A JP 2012136914 A JP2012136914 A JP 2012136914A
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fireproof
seismic isolation
isolation device
building
column
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Ichiro Takahashi
一郎 高橋
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Fujita Corp
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Fujita Corp
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Abstract

PROBLEM TO BE SOLVED: To easily perform operations of maintenance, inspection and management of a base-isolating device fire-resistively covered with a fire resistive covering material.SOLUTION: A column 21 of a building is structurally split into two lower and upper sections, that is to say, downside and upside column bodies 21a and 21b, and a base-isolating device 31 is disposed between the downside and upside column bodies 21a and 21b. On two sides directed in mutually reverse directions with respect to the base-isolating device 31, a pair of upside fixed-type fire resistive covering materials 42a1 is fixed to the upside column body 21b, and a pair of downside fixed-type fire resistive covering materials 42a2 is fixed to the downside column body 21a. On the other two sides with respect to the base-isolating device 31, a pair of upside movable-type fire resistive covering materials 42b1 is attached to the upside column body 21b in such a manner as to be freely openable/closable via a hinge, and a pair of downside movable-type fire resistive covering materials 42b2 is attached to the downside column body 21a in such a manner as to be freely openable/closable via a hinge.

Description

本発明は、建物に設けられた免震装置の耐火構造に関し、特に、耐火被覆された免震装置の維持・管理・点検作業の効率化に適用して有効な技術である。   The present invention relates to a fireproof structure of a seismic isolation device provided in a building, and in particular, is a technique that is effective when applied to the efficiency of maintenance, management, and inspection work of a seismic isolation device that is covered with a fireproof coating.

ビル等の建物には、地震時の揺れを吸収して建物への地震の影響を抑制するために、免震装置が設けられている。建物に設けられる免震装置としては、例えば転がり支承、滑り支承、積層ゴム支承等があり、これらは建物の免震階層の上下に二分された柱の間や柱と梁の間等に設けられ、地震時の水平方向の揺れを吸収する。   A building such as a building is provided with a seismic isolation device in order to absorb the shaking at the time of the earthquake and suppress the influence of the earthquake on the building. Examples of seismic isolation devices installed in buildings include rolling bearings, sliding bearings, laminated rubber bearings, etc., which are installed between columns divided between the top and bottom of the building's seismic isolation hierarchy, between columns and beams, etc. Absorbs horizontal shaking during an earthquake.

建物に設けられる免震装置には、火災時にこれを保護するために、耐火構造が設けられている。免震装置用の耐火構造としては、例えば、免震装置の四方を不燃材や耐火材等で板状に形成された耐火被覆材で囲う耐火被覆工法が知られている。   The seismic isolation device provided in the building is provided with a fireproof structure in order to protect it in the event of a fire. As a fireproof structure for a seismic isolation device, for example, a fireproof coating method is known in which four sides of the seismic isolation device are surrounded by a fireproof coating material formed in a plate shape with a non-combustible material or a fireproof material.

しかしながら、従来の耐火被覆工法では、耐火被覆材を免震装置が設けられた柱の上側部分や下側部分にボルト等の締結部材を用いて固定する構造となっているので、免震装置を定期点検する際に耐火被覆材を柱から取り外す作業が必要となる。そのため、点検作業が煩雑となり、また場合によっては取り外し作業中に耐火被覆材が破損するなどの問題があった。   However, the conventional fireproof coating method has a structure in which the fireproof coating material is fixed to the upper part and the lower part of the column provided with the seismic isolation device using fastening members such as bolts. It is necessary to remove the fireproof covering material from the pillar during periodic inspection. Therefore, the inspection work becomes complicated, and in some cases, the fireproof coating material is damaged during the removal work.

そこで、例えば特許文献1に示される耐火構造では、柱に固定される耐火被覆材に遮煙、遮炎、遮熱性を有する防火耐火ガラス製の点検窓を設け、この点検窓から免震装置を目視で点検できるようにしている。   Therefore, for example, in the fireproof structure shown in Patent Document 1, a fireproof and fireproof glass inspection window having smoke shielding, flameproofing, and heat shielding properties is provided in the fireproof covering material fixed to the pillar, and the seismic isolation device is installed from this inspection window. Visual inspection is possible.

特開2006−219874号公報JP 2006-2119874 A

しかしながら、特許文献1に示されるように耐火被覆材に点検窓を設けた構造では、点検窓から免震装置を目視で点検することはできるが、詳細な点検は困難である。そのため、詳細な点検を行うためには、耐火被覆材を柱から取り外す必要がある。また、免震装置の維持、管理等のために免震装置に対する作業が必要な場合にも耐火被覆材を取り外す必要がある。   However, as shown in Patent Document 1, in the structure in which the inspection window is provided in the fireproof covering material, the seismic isolation device can be visually inspected from the inspection window, but detailed inspection is difficult. Therefore, in order to perform a detailed inspection, it is necessary to remove the fireproof covering material from the pillar. In addition, it is necessary to remove the fireproof covering material when work on the seismic isolation device is necessary for maintenance and management of the seismic isolation device.

本発明の目的は、耐火被覆材により耐火被覆された免震装置の維持・点検・管理作業を容易に行えるようにすることにある。   An object of the present invention is to facilitate maintenance, inspection, and management work of a seismic isolation device that is fireproof coated with a fireproof coating material.

本発明の免震装置用耐火構造は、建物に設けられた免震装置を板状の耐火被覆材で覆う免震装置用耐火構造であって、前記耐火被覆材が前記建物に開閉自在に取り付けられていることを特徴とする。   The fireproof structure for a seismic isolation device of the present invention is a fireproof structure for a seismic isolation device that covers a seismic isolation device provided in a building with a plate-shaped fireproof coating material, and the fireproof coating material is attached to the building so as to be freely opened and closed. It is characterized by being.

本発明の免震装置用耐火構造は、前記耐火被覆材がヒンジを用いて前記建物に取り付けられていることを特徴とする。   The fireproof structure for a seismic isolation device according to the present invention is characterized in that the fireproof covering material is attached to the building using a hinge.

本発明の免震装置用耐火構造は、前記免震装置の四方にそれぞれ耐火被覆材が設けられ、互いに逆向きとなる2つの前記耐火被覆材が前記建物に開閉自在に取り付けられ、他の2つの前記耐火被覆材が前記建物に固定されていることを特徴とする。   In the fireproof structure for a seismic isolation device of the present invention, fireproof coating materials are provided on each of the four sides of the seismic isolation device, and the two fireproof coating materials opposite to each other are attached to the building so as to be freely opened and closed. One of the fireproof covering materials is fixed to the building.

本発明の免震装置用耐火構造は、前記耐火被覆材は、前記免震装置の上側において前記建物に開閉自在に取り付けられる上側耐火被覆材と、前記免震装置の下側において前記建物に開閉自在に取り付けられる下側耐火被覆材とからなり、前記上側耐火被覆材と前記下側耐火被覆材とがスリット状の隙間を空けて上下に並べて配置されていることを特徴とする。   In the fireproof structure for a seismic isolation device according to the present invention, the fireproof coating material is opened and closed to the building on the upper side of the seismic isolation device, the upper fireproof coating material attached to the building so as to be freely opened and closed, and the lower side of the seismic isolation device. The upper fire-resistant coating material and the lower fire-resistant coating material are arranged side by side with a slit-like gap therebetween.

本発明によれば、免震装置を覆う板状の耐火被覆材を建物に開閉自在に取り付けるようにしたので、耐火被覆材により免震装置を火災から保護するとともに、免震装置の維持・点検・管理作業等においては、耐火被覆材を開くことにより当該作業等を容易に行うことができる。   According to the present invention, since the plate-like fireproof covering material covering the seismic isolation device is attached to the building so as to be freely opened and closed, the seismic isolation device is protected from fire by the fireproof covering material, and the maintenance and inspection of the seismic isolation device is performed. -In management work etc., the work etc. can be easily performed by opening a fireproof covering material.

建物の免震層の構造を概略で示す説明図である。It is explanatory drawing which shows roughly the structure of the seismic isolation layer of a building. 本発明の一実施の形態である免震装置用耐火構造の斜視図である。It is a perspective view of the fireproof structure for seismic isolation devices which is one embodiment of the present invention. 図2に示すA−A線に沿う断面図である。It is sectional drawing which follows the AA line shown in FIG. 図3の横断面図である。It is a cross-sectional view of FIG. 図2に示す免震装置用耐火構造の可動式耐火被覆材が開かれた状態を示す斜視図である。It is a perspective view which shows the state by which the movable fireproof covering material of the fireproof structure for seismic isolation apparatuses shown in FIG. 2 was opened. 可動式耐火被覆材の柱への取付構造を示す説明図である。It is explanatory drawing which shows the attachment structure to the column of a movable fireproof coating material.

以下、本発明の実施の形態を図面に基づいて詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図1に示す免震層(中間階免震層)11は、ビル等である建物12に免震機能を持たせるために、建物12の中間階に設けられている。   The seismic isolation layer (intermediate floor seismic isolation layer) 11 shown in FIG. 1 is provided on the intermediate floor of the building 12 in order to give the building 12 such as a building a seismic isolation function.

免震層11は階段室13を備え、この階段室13には階段(非常用階段)14が設けられている。この階段14は免震層11を挟んだ上側階と下側階とを連絡するものであり、この建物12のライフラインとして機能する。また、階段室13に隣接して免震層11には耐火区画室15が設けられ、この耐火区画室15にはこの建物12を支える2本の柱16が配置されている。耐火区画室15と階段室13とを区画する壁17は、コンクリート等で形成された耐火区画壁として構成されており、耐火区画室15と階段室13との間で火災安全性が確保されている。階段室13の耐火区画室15とは反対側の部分は駐車場18とされており、この駐車場18にはこの建物12を支える2本の柱21が配置されている。階段室13と駐車場18の間の空間22はエレベータ23の昇降路(シャフト)やパイプスペースとして用いられている。   The seismic isolation layer 11 includes a staircase 13 in which a staircase (emergency staircase) 14 is provided. The staircase 14 connects the upper floor and the lower floor with the seismic isolation layer 11 in between, and functions as a lifeline of the building 12. In addition, a fireproof compartment 15 is provided in the seismic isolation layer 11 adjacent to the staircase 13, and two pillars 16 that support the building 12 are disposed in the fireproof compartment 15. The wall 17 that partitions the fireproof compartment 15 and the staircase 13 is configured as a fireproof compartment wall made of concrete or the like, and fire safety is ensured between the fireproof compartment 15 and the staircase 13. Yes. A portion of the staircase 13 opposite to the fireproof compartment 15 is a parking lot 18, and two pillars 21 that support the building 12 are arranged in the parking lot 18. A space 22 between the staircase 13 and the parking lot 18 is used as a hoistway (shaft) or a pipe space of the elevator 23.

免震層11に設けられた各柱16,21には、それぞれ地震時の水平方向の揺れを吸収して建物12への地震の影響を抑制するために、免震装置31が設けられている。   Each of the columns 16 and 21 provided in the seismic isolation layer 11 is provided with a seismic isolation device 31 in order to suppress the influence of the earthquake on the building 12 by absorbing horizontal shaking at the time of the earthquake. .

各柱16,21は断面矩形の鉄筋コンクリート製となっており、それぞれ免震層11の床32に立脚する下側柱体16a,21aと免震層11の天井33を支える上側柱体16b,21bとに上下方向に2分割された構造となっている。免震装置31は下側柱体16a,21aと上側柱体16b,21bとの間に配置され、各柱体16a,16b,21a,21bの間で建物12の荷重を支持するとともに下側柱体16a,21aと上側柱体16b,21bとを所定の範囲で水平方向に相対移動可能に支持している。   The columns 16 and 21 are made of reinforced concrete having a rectangular cross section, and the lower columns 16a and 21a standing on the floor 32 of the base isolation layer 11 and the upper columns 16b and 21b supporting the ceiling 33 of the base isolation layer 11, respectively. In addition, the structure is divided into two in the vertical direction. The seismic isolation device 31 is disposed between the lower column bodies 16a and 21a and the upper column bodies 16b and 21b, and supports the load of the building 12 between the respective column bodies 16a, 16b, 21a, and 21b and the lower column. The bodies 16a and 21a and the upper column bodies 16b and 21b are supported so as to be relatively movable in the horizontal direction within a predetermined range.

免震装置31の作動による免震層11を構成する各壁17,34,35,36の破損を防止するために、各壁17,34,35,36には、それぞれ免震装置31と同一高さの部分において水平方向に延びるスリット状の免震耐火目地37が設けられている。   In order to prevent damage to the walls 17, 34, 35, 36 constituting the seismic isolation layer 11 due to the operation of the seismic isolation device 31, the walls 17, 34, 35, 36 are identical to the seismic isolation device 31, respectively. A slit-shaped seismic isolation fire joint 37 extending in the horizontal direction at the height portion is provided.

免震層11の耐火区画室15は、それ自体が耐火区画となっているので、この耐火区画室15の内部に設けられる2本の柱16には免震装置31に対する耐火構造が採用されていない。これに対して、免震層11の駐車場18の内部に設けられる2本の柱21については、例えば車両38等から発生した火災による影響を受けるおそれがある。そのため、駐車場18の内部に設けられる2本の柱21については、それぞれ本発明の免震装置用耐火構造41が適用されている。   Since the fireproof compartment 15 of the seismic isolation layer 11 itself is a fireproof compartment, the two pillars 16 provided inside the fireproof compartment 15 have a fireproof structure for the seismic isolation device 31. Absent. On the other hand, the two pillars 21 provided in the parking lot 18 of the seismic isolation layer 11 may be affected by, for example, a fire generated from the vehicle 38 or the like. Therefore, the seismic isolation device fireproof structure 41 of the present invention is applied to the two pillars 21 provided inside the parking lot 18.

なお、耐火区画室15に設けられる2本の柱16にも、本発明の免震装置用耐火構造を適用してもよいことは言うまでもない。   Needless to say, the fireproof structure for a seismic isolation device of the present invention may be applied to the two pillars 16 provided in the fireproof compartment 15.

ここでまず、免震装置31について説明する。   First, the seismic isolation device 31 will be described.

図示する場合では、免震装置31としては積層ゴム支承が用いられている。図3、図4に示すように、積層ゴム支承である免震装置31は、上下の円板状のフランジプレート31a,31bの間に高い減衰特性を有するゴム板と鋼板等の支持板とを上下方向に交互に積層してなる積層ゴム部31cが設けられた構造となっている。免震装置31の下側のフランジプレート31aは下側柱体21aの上向き端面の中心位置に固定され、上側のフランジプレート31bは上側柱体21bの下向き端面の中心位置に固定されている。建物12に地震による水平方向の揺れが加えられると、免震装置31の積層ゴム部31cが水平方向に弾性変形し、柱21の下側柱体21aと上側柱体21bとが所定の範囲で互いに水平方向に相対移動して地震の揺れが免震装置31により吸収される。   In the illustrated case, a laminated rubber bearing is used as the seismic isolation device 31. As shown in FIGS. 3 and 4, the seismic isolation device 31 which is a laminated rubber bearing includes a rubber plate having high damping characteristics and a support plate such as a steel plate between upper and lower disk-shaped flange plates 31a and 31b. It has a structure in which laminated rubber portions 31c that are alternately laminated in the vertical direction are provided. The lower flange plate 31a of the seismic isolation device 31 is fixed at the center position of the upward end surface of the lower column body 21a, and the upper flange plate 31b is fixed at the center position of the downward end surface of the upper column body 21b. When horizontal vibration due to an earthquake is applied to the building 12, the laminated rubber portion 31c of the seismic isolation device 31 is elastically deformed in the horizontal direction, and the lower column 21a and the upper column 21b of the column 21 are within a predetermined range. The seismic shaking is absorbed by the seismic isolation device 31 by moving relative to each other in the horizontal direction.

次に、本発明の免震装置用耐火構造41の詳細について説明する。   Next, the detail of the fireproof structure 41 for seismic isolation apparatuses of this invention is demonstrated.

図2、図3に示すように、本発明の免震装置用耐火構造41は、柱21の下側柱体21aと上側柱体21bとの間に設けられた免震装置31の四方(周囲)を、8枚の板状の耐火被覆材42a,42bで覆った(囲った)構造となっている。   As shown in FIGS. 2 and 3, the fireproof structure 41 for a seismic isolation device according to the present invention has four sides (surroundings) of the seismic isolation device 31 provided between the lower column 21 a and the upper column 21 b of the column 21. ) Is covered (enclosed) with eight plate-like fireproof covering materials 42a and 42b.

本発明の免震装置用耐火構造41では、耐火被覆材42a,42bとしては、例えばケイ酸カルシウム板等の耐火材や不燃ボード等の不燃材が用いられる。   In the fireproof structure 41 for the seismic isolation device of the present invention, as the fireproof covering materials 42a and 42b, for example, a fireproof material such as a calcium silicate plate or a nonflammable material such as a nonflammable board is used.

耐火被覆材42a,42bは、4枚の固定式耐火被覆材42aと4枚の可動式耐火被覆材42bとで構成されており、図示する場合では、互いに逆向きとなる二方の耐火被覆材が固定式耐火被覆材42aとされ、他の二方の耐火被覆材が可動式耐火被覆材42bとされている。   The fireproof covering materials 42a and 42b are composed of four fixed fireproof covering materials 42a and four movable fireproof covering materials 42b. In the case shown in the figure, two fireproof covering materials which are opposite to each other. Is a fixed fireproof covering 42a, and the other two fireproof coverings are movable fireproof covering 42b.

なお、図示する場合には、互いに逆向きとなる二方の耐火被覆材を固定式耐火被覆材42aとし、他の二方の耐火被覆材を可動式耐火被覆材42bとしているが、これに限らず、耐火被覆材42a,42bの少なくとも1枚が可動式耐火被覆材として構成されていれば、他の耐火被覆材については任意に固定式耐火被覆材や可動式耐火被覆材とすることができる。   In the case shown in the figure, the two fireproof coatings opposite to each other are fixed fireproof coatings 42a, and the other two fireproof coatings are movable fireproof coatings 42b. If at least one of the fireproof coating materials 42a and 42b is configured as a movable fireproof coating material, the other fireproof coating materials can be arbitrarily set as a fixed fireproof coating material or a movable fireproof coating material. .

固定式耐火被覆材42aは2枚の上側固定式耐火被覆材42a1と2枚の下側固定式耐火被覆材42a2とで構成されている。   The fixed fireproof covering material 42a is composed of two upper fixed fireproof covering materials 42a1 and two lower fixed fireproof covering materials 42a2.

上側固定式耐火被覆材42a1は、互いに免震装置31を挟んだ逆側において対応する上側柱体21bの外面と同一面状となるように配置されるとともに上辺部分を上側柱体21bの下向き端面に突き当てた状態となって、上側柱体21bに固定された支持体43にボルト等の締結部材44により固定されている。つまり、上側固定式耐火被覆材42a1は免震装置31に対して上側において柱21(建物12)に固定されている。   The upper fixed fireproof covering material 42a1 is arranged so as to be flush with the outer surface of the corresponding upper column 21b on the opposite side across the seismic isolation device 31, and the upper side portion is the lower end surface of the upper column 21b. And is fixed to a support body 43 fixed to the upper column 21b by a fastening member 44 such as a bolt. That is, the upper fixed fireproof covering material 42 a 1 is fixed to the column 21 (building 12) on the upper side with respect to the seismic isolation device 31.

同様に、下側固定式耐火被覆材42a2は、互いに免震装置31を挟んだ逆側において対応する下側柱体21aの外面と同一面状となるように配置されるとともに下辺部分を下側柱体21aの上向き端面に突き当てた状態となって、下側柱体21aに固定された支持体43にボルト等の締結部材44により固定されている。つまり、下側固定式耐火被覆材42a2は免震装置31に対して下側において柱21(建物12)に固定されている。   Similarly, the lower fixed fireproof covering material 42a2 is arranged so as to be flush with the outer surface of the corresponding lower column 21a on the opposite sides of the seismic isolation device 31, and the lower side portion is placed on the lower side. It is in a state of abutting on the upward end surface of the column body 21a, and is fixed to a support body 43 fixed to the lower column body 21a by a fastening member 44 such as a bolt. That is, the lower fixed fireproof covering material 42 a 2 is fixed to the column 21 (building 12) on the lower side with respect to the seismic isolation device 31.

上側柱体21bに固定された上側固定式耐火被覆材42a1と下側柱体21aに固定された下側固定式耐火被覆材42a2との間にはスリット状の隙間45が設けられている。これらのスリット状の隙間45は、免震装置31の高さ方向の中心位置に合わせて設けられるとともに、免震層11を構成する各壁17,34,35,36に設けられた免震耐火目地37とも高さが一致している。   A slit-like gap 45 is provided between the upper fixed fireproof covering material 42a1 fixed to the upper column 21b and the lower fixed fireproof covering material 42a2 fixed to the lower column 21a. These slit-like gaps 45 are provided in accordance with the center position of the seismic isolation device 31 in the height direction, and are also provided with seismic isolation fire resistance provided on the walls 17, 34, 35, and 36 constituting the seismic isolation layer 11. The joints 37 have the same height.

このように、上側固定式耐火被覆材42a1と下側固定式耐火被覆材42a2とは、スリット状の隙間45を空けて互いに上下に並べて配置された状態となって、支持体43を介して柱21(建物12)に固定されている。   Thus, the upper fixed fireproof covering material 42a1 and the lower fixed fireproof covering material 42a2 are arranged side by side with each other with a slit-like gap 45 therebetween, and the column is interposed via the support 43. 21 (building 12).

一方、可動式耐火被覆材42bは2枚の上側耐火被覆材としての上側可動式耐火被覆材42b1と2枚の下側耐火被覆材としての下側可動式耐火被覆材42b2とで構成されている。   On the other hand, the movable fireproof covering material 42b is composed of two upper movable fireproof covering materials 42b1 as upper fireproof covering materials and two lower movable fireproof covering materials 42b2 as lower fireproof covering materials. .

上側可動式耐火被覆材42b1は、互いに免震装置31を挟んだ逆側において対応する上側柱体21bの外面と同一面状となるように配置されており、また、上側固定式耐火被覆材42a1に対して直交した状態で隣接している。上側可動式耐火被覆材42b1は、その上辺部分において3つのヒンジ51を用いて上側柱体21bの外面に取り付けられている。つまり、上側可動式耐火被覆材42b1は、免震装置31に対して上側において3つのヒンジ51を用いて開閉自在に建物12の上側柱体21bに取り付けられている。   The upper movable fireproof covering material 42b1 is arranged so as to be flush with the outer surface of the corresponding upper column 21b on the opposite sides of the seismic isolation device 31, and the upper fixed fireproof covering material 42a1. Are adjacent to each other in a state orthogonal to. The upper movable fireproof covering material 42b1 is attached to the outer surface of the upper column 21b using three hinges 51 in the upper side portion. That is, the upper movable fireproof covering material 42b1 is attached to the upper column 21b of the building 12 so as to be freely opened and closed using the three hinges 51 on the upper side with respect to the seismic isolation device 31.

同様に、下側可動式耐火被覆材42b2は、互いに免震装置31を挟んだ逆側において対応する下側柱体21aの外面と同一面状となるように配置されており、また、下側固定式耐火被覆材42a2に対して直交した状態で隣接している。下側可動式耐火被覆材42b2は、その下辺部分において3つのヒンジ51を用いて下側柱体21aの外面に取り付けられている。つまり、下側可動式耐火被覆材42b2は、免震装置31に対して下側において3つのヒンジ51を用いて開閉自在に建物12の下側柱体21aに取り付けられている。   Similarly, the lower movable fire-resistant covering material 42b2 is arranged so as to be flush with the outer surface of the corresponding lower column 21a on the opposite side across the seismic isolation device 31, and the lower side It is adjacent to the fixed fireproof covering material 42a2 in a state orthogonal to it. The lower movable fireproof covering material 42b2 is attached to the outer surface of the lower column 21a using three hinges 51 in the lower side portion. That is, the lower movable fireproof covering material 42b2 is attached to the lower column 21a of the building 12 so as to be freely opened and closed using the three hinges 51 on the lower side with respect to the seismic isolation device 31.

図6に示すように、ヒンジ51を用いて柱21に取り付けられた可動式耐火被覆材42b1,42b2は、ヒンジ軸51aを中心として上下に開閉する。各柱体21a,21bの端面にはそれぞれ戸当り52が設けられ、この戸当り52に可動式耐火被覆材42b1,42b2が当接することによりその閉じ位置が規定される。   As shown in FIG. 6, the movable fireproof covering materials 42b1 and 42b2 attached to the column 21 using the hinge 51 open and close up and down around the hinge shaft 51a. A door stop 52 is provided on the end face of each column 21a, 21b. The movable fireproof covering materials 42b1, 42b2 come into contact with the door stop 52 to define the closed position.

なお、火災に対する耐性を確保するために、ヒンジ51は鋼材やステンレス鋼材等により形成され、戸当り52は不燃ボードや耐火ボード等で形成されている。   In order to secure resistance to fire, the hinge 51 is made of steel, stainless steel, or the like, and the door stop 52 is made of non-combustible board, fireproof board, or the like.

上側柱体21bに開閉自在に取り付けられた上側可動式耐火被覆材42b1と下側柱体21aに開閉自在に取り付けられた下側可動式耐火被覆材42b2との間にはスリット状の隙間53が設けられている。これらのスリット状の隙間53は、免震装置31の高さ方向の中心位置に合わせられるとともに免震層11を構成する各壁17,34,35,36
に設けられた免震耐火目地37とも高さが合わせられている。つまり、上側可動式耐火被覆材42b1と下側可動式耐火被覆材42b2とは、スリット状の隙間53を空けて互いに上下に並べて配置された状態となっており、その隙間53は隙間45に連ねて設けられている。
A slit-shaped gap 53 is formed between the upper movable fireproof coating 42b1 attached to the upper column 21b so as to be opened and closed and the lower movable fireproof coating 42b2 attached to the lower column 21a so as to be opened and closed. Is provided. These slit-shaped gaps 53 are aligned with the center position in the height direction of the seismic isolation device 31 and each of the walls 17, 34, 35, 36 constituting the seismic isolation layer 11.
The height is also matched with the seismic isolation fireproof joint 37 provided in. That is, the upper movable fireproof coating material 42b1 and the lower movable fireproof coating material 42b2 are arranged side by side with each other with a slit-shaped gap 53 therebetween, and the gap 53 is connected to the gap 45. Is provided.

本願発明の免震装置用耐火構造41では、上側可動式耐火被覆材42b1と下側可動式耐火被覆材42b2とをヒンジ51により開閉自在に柱21(建物12)に取り付けるようにしたので、免震装置31の維持・点検・管理作業等を行うに際しては、図5に示すように、上側可動式耐火被覆材42b1を上側に開くとともに、下側可動式耐火被覆材42b2を下側に開くことができる。これにより、免震装置31を耐火被覆材42a,42bにより四方を覆われた状態から、その一部を外部に露出させた状態として、免震装置31の維持・点検・管理作業等を容易にすることができる。   In the fireproof structure 41 for the seismic isolation device of the present invention, the upper movable fireproof coating material 42b1 and the lower movable fireproof coating material 42b2 are attached to the column 21 (building 12) by the hinge 51 so as to be freely opened and closed. When performing maintenance, inspection, management work, etc. of the seismic device 31, as shown in FIG. 5, the upper movable fireproof covering material 42b1 is opened upward and the lower movable fireproof covering material 42b2 is opened downward. Can do. As a result, the seismic isolation device 31 can be easily maintained, inspected, and managed from the state where the seismic isolation device 31 is covered on all sides by the fireproof covering materials 42a and 42b, with a part thereof exposed to the outside. can do.

このように、本発明の免震装置用耐火構造41では、免震装置31を覆う耐火被覆材42a,42bの一部を、開閉機能を有する可動式耐火被覆材42bとして構成するようにしたので、免震装置31を耐火被覆材42a,42bで覆うようにした耐火構造であっても、可動式耐火被覆材42bを開くことにより、免震装置31の維持・点検・管理作業等を容易にすることができる。   Thus, in the fireproof structure 41 for the seismic isolation device of the present invention, a part of the fireproof coating materials 42a and 42b covering the seismic isolation device 31 is configured as the movable fireproof coating material 42b having an opening / closing function. Even with a fireproof structure in which the seismic isolation device 31 is covered with the fireproof covering materials 42a and 42b, the maintenance, inspection, and management of the seismic isolation device 31 can be easily performed by opening the movable fireproof covering material 42b. can do.

また、本発明では、各可動式耐火被覆材42bをヒンジ51を用いて柱21に開閉自在に取り付けるようにしたので、簡単な構成で開閉機能を有する可動式耐火被覆材42bを構成することができる。   Further, in the present invention, each movable fire-resistant covering material 42b is attached to the column 21 so as to be freely opened and closed using the hinge 51, so that the movable fire-resistant covering material 42b having an opening / closing function can be configured with a simple configuration. it can.

本発明は前記実施の形態に限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能であることはいうまでもない。例えば、本実施の形態においては、本発明の免震装置用耐火構造41が設けられる免震装置31として積層ゴム支承が説明されているが、これに限らず、免震装置31としては転がり支承や滑り支承などの別タイプの免震装置であってもよい。   It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the present embodiment, a laminated rubber bearing is described as the seismic isolation device 31 provided with the fireproof structure 41 for the seismic isolation device of the present invention. However, the present invention is not limited to this, and the seismic isolation device 31 is a rolling bearing. Another type of seismic isolation device such as a sliding bearing or the like may be used.

また、本実施の形態においては、免震装置31が設けられる免震層11を建物12の中間階に設けられる中間階免震層としているが、これに限らず、建物12の基礎免震層としてもよい。   Further, in this embodiment, the seismic isolation layer 11 provided with the seismic isolation device 31 is an intermediate floor seismic isolation layer provided on the intermediate floor of the building 12. It is good.

さらに、本実施の形態においては、各可動式耐火被覆材42bを上側可動式耐火被覆材42b1と下側可動式耐火被覆材42b2とに分けて設けるようにしているが、これに限らず、いずれか一方のみを設ける構成としてもよい。   Further, in the present embodiment, each movable fireproof covering material 42b is divided into an upper movable fireproof covering material 42b1 and a lower movable fireproof covering material 42b2, but this is not restrictive. Only one of them may be provided.

11 免震層
12 建物
13 階段室
14 階段
15 耐火区画室
16 柱
16a 下側柱体
16b 上側柱体
17 壁
18 駐車場
21 柱
21a 下側柱体
21b 上側柱体
22 空間
23 エレベータ
31 免震装置
31a,31b フランジプレート
31c 積層ゴム部
32 床
33 天井
34,35,36 壁
37 免震耐火目地
38 車両
41 免震装置用耐火構造
42a 固定式耐火被覆材
42a1 上側固定式耐火被覆材
42a2 下側固定式耐火被覆材
42b 可動式耐火被覆材
42b1 上側可動式耐火被覆材(上側耐火被覆材)
42b2 下側可動式耐火被覆材(下側耐火被覆材)
43 支持体
44 締結部材
45 隙間
51 ヒンジ
51a ヒンジ軸
52 戸当り
53 隙間
DESCRIPTION OF SYMBOLS 11 Base isolation layer 12 Building 13 Staircase 14 Stair 15 Fireproof compartment 16 Column 16a Lower column 16b Upper column 17 Wall 18 Parking lot 21 Column 21a Lower column 21b Upper column 22 Space 23 Elevator 31 Seismic isolation device 31a, 31b Flange plate 31c Laminated rubber part 32 Floor 33 Ceiling 34, 35, 36 Wall 37 Seismic isolation fireproof joint 38 Vehicle 41 Fireproof structure for base isolation device 42a Fixed fireproof covering 42a1 Upper fixed fireproof covering 42a2 Lower fixed Type fireproof covering 42b Movable fireproof covering 42b1 Upper movable fireproof covering (upper fireproof covering)
42b2 Lower movable fireproof coating (lower fireproof coating)
43 Support 44 Fastening member 45 Clearance 51 Hinge 51a Hinge shaft 52 Per door 53 Clearance

Claims (4)

建物に設けられた免震装置を板状の耐火被覆材で覆う免震装置用耐火構造であって、
前記耐火被覆材が前記建物に開閉自在に取り付けられていることを特徴とする免震装置用耐火構造。
It is a fireproof structure for a seismic isolation device that covers a seismic isolation device provided in a building with a plate-shaped fireproof covering material,
A fireproof structure for a seismic isolation device, wherein the fireproof covering material is attached to the building so as to be freely opened and closed.
請求項1記載の免震装置用耐火構造において、前記耐火被覆材がヒンジを用いて前記建物に取り付けられていることを特徴とする免震装置用耐火構造。   The fireproof structure for a seismic isolation device according to claim 1, wherein the fireproof covering material is attached to the building using a hinge. 請求項1または2記載の免震装置用耐火構造において、前記免震装置の四方にそれぞれ耐火被覆材が設けられ、互いに逆向きとなる2つの前記耐火被覆材が前記建物に開閉自在に取り付けられ、他の2つの前記耐火被覆材が前記建物に固定されていることを特徴とする免震装置用耐火構造。   The fireproof structure for a seismic isolation device according to claim 1 or 2, wherein a fireproof coating material is provided on each of the four sides of the seismic isolation device, and the two fireproof coating materials opposite to each other are attached to the building so as to be openable and closable. The other two fireproof covering materials are fixed to the building. 請求項1〜3のいずれか1項に記載の免震装置用耐火構造において、前記耐火被覆材は、前記免震装置の上側において前記建物に開閉自在に取り付けられる上側耐火被覆材と、前記免震装置の下側において前記建物に開閉自在に取り付けられる下側耐火被覆材とからなり、前記上側耐火被覆材と前記下側耐火被覆材とがスリット状の隙間を空けて上下に並べて配置されていることを特徴とする免震装置用耐火構造。   The fireproof structure for a seismic isolation device according to any one of claims 1 to 3, wherein the fireproof coating material includes an upper fireproof coating material that is openably and closably attached to the building above the seismic isolation device; It consists of a lower fireproof covering material that can be freely opened and closed on the building below the seismic device, and the upper fireproof covering material and the lower fireproof covering material are arranged side by side with a slit-like gap therebetween. Fireproof structure for seismic isolation devices.
JP2010291667A 2010-12-28 2010-12-28 Fireproof structure for base-isolating device Pending JP2012136914A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101483997B1 (en) 2013-05-02 2015-01-19 한국수력원자력 주식회사 Isolating Device for easy inspection and exchange of components

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Publication number Priority date Publication date Assignee Title
JPH11193579A (en) * 1997-12-26 1999-07-21 Nichias Corp Fire-resistive enclosure structure of base isolation device
JP2002161594A (en) * 2000-11-22 2002-06-04 Takenaka Komuten Co Ltd Fire resistant coating method of base isolation device
JP2004332390A (en) * 2003-05-08 2004-11-25 Fujita Corp Fire-resisting structure for base isolator
JP3142272U (en) * 2008-03-28 2008-06-05 日本インシュレーション株式会社 Fireproof coating structure for seismic isolation devices

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11193579A (en) * 1997-12-26 1999-07-21 Nichias Corp Fire-resistive enclosure structure of base isolation device
JP2002161594A (en) * 2000-11-22 2002-06-04 Takenaka Komuten Co Ltd Fire resistant coating method of base isolation device
JP2004332390A (en) * 2003-05-08 2004-11-25 Fujita Corp Fire-resisting structure for base isolator
JP3142272U (en) * 2008-03-28 2008-06-05 日本インシュレーション株式会社 Fireproof coating structure for seismic isolation devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101483997B1 (en) 2013-05-02 2015-01-19 한국수력원자력 주식회사 Isolating Device for easy inspection and exchange of components

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