JP6232803B2 - Seismic isolation structure for pillars constituting the structure - Google Patents

Seismic isolation structure for pillars constituting the structure Download PDF

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JP6232803B2
JP6232803B2 JP2013154372A JP2013154372A JP6232803B2 JP 6232803 B2 JP6232803 B2 JP 6232803B2 JP 2013154372 A JP2013154372 A JP 2013154372A JP 2013154372 A JP2013154372 A JP 2013154372A JP 6232803 B2 JP6232803 B2 JP 6232803B2
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JP2015025263A (en
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佐藤　祐二
祐二 佐藤
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IHI Corp
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Description

本発明は、立体倉庫、ボイラ鉄骨、立体パーキング、荷役設備等の構造物に適用して構造物の揺れを低減する構造物を構成する柱の免震構造に関するものである。   The present invention relates to a seismic isolation structure for a column constituting a structure that is applied to a structure such as a three-dimensional warehouse, boiler steel frame, three-dimensional parking, and cargo handling equipment to reduce the shaking of the structure.

立体倉庫は、複数の鋼鉄製の柱と複数段の鋼鉄製の梁を備えることにより複数のラック（棚）を立体的に組み立てた構成を有している。大規模な地震が発生した場合には、立体倉庫が損壊する可能性があり、又、立体倉庫に格納された荷が落下して損傷する可能性がある。これにより立体倉庫の柱に免震構造を備えて地震に対する安全性を高めることが考えられている。   The three-dimensional warehouse has a configuration in which a plurality of racks (shelves) are three-dimensionally assembled by providing a plurality of steel columns and a plurality of stages of steel beams. If a large-scale earthquake occurs, the three-dimensional warehouse may be damaged, and the load stored in the three-dimensional warehouse may fall and be damaged. In this way, it is considered to increase the safety against earthquakes by providing a seismic isolation structure for the pillars of a three-dimensional warehouse.

立体倉庫の柱の免震構造としては、立体倉庫を構成する複数の柱の各下端部と基礎との間に、積層ゴムからなる免震構造を備えたものがある（特許文献１）。また、立体倉庫の柱を上下の途中位置で切断した構成として、上側の二本の柱の下端を水平な第一水平部材で連結し、上側の二本の柱に対応する下側の二本の柱の上端部を、前記第一水平部材と係合可能な水平な第二水平部材で連結することにより、前記第一水平部材と第二水平部材を長手方向へ低摩擦部材を介してスライド可能とし、前記第一水平部材と第二水平部材とを粘弾性体で接続したものがある（特許文献２）。   As a base isolation structure of a three-dimensional warehouse, there is one having a base isolation structure made of laminated rubber between each lower end portion and a foundation of a plurality of columns constituting the three-dimensional warehouse (Patent Document 1). In addition, as a structure in which the pillars of the three-dimensional warehouse are cut at the upper and lower middle positions, the lower ends of the upper two pillars are connected by a horizontal first horizontal member, and the lower two parts corresponding to the upper two pillars By connecting the upper end of the column with a horizontal second horizontal member engageable with the first horizontal member, the first horizontal member and the second horizontal member are slid in the longitudinal direction via a low friction member. There is one in which the first horizontal member and the second horizontal member are connected by a viscoelastic body (Patent Document 2).

特開２００６−１０４８８３号公報JP 2006-104883 A 特開２０１３−０３９９８９号公報JP 2013-039989 A

しかし、特許文献１のように、多数の柱が設けられる立体倉庫の各柱の下端に積層ゴムによる免震構造を備えた場合には、基礎の増設が必要なことや積層ゴムが比較的高価であることから立体倉庫の設備コストが増加する問題がある。また、特許文献２においても、前記第一水平部材と第二水平部材を設け、更に、前記第一水平部材と第二水平部材とを接続する粘弾性体を設ける必要があるために、構造が複雑となって立体倉庫の設備コストが増加する問題がある。さらに、特許文献２では、柱を免震する方向が前記第一水平部材と第二水平部材がスライドする長手方向に限定されてしまい、このスライドの方向と直交する方向に対しては免震できないという問題がある。   However, as in Patent Document 1, when a base-isolated structure with laminated rubber is provided at the lower end of each column of a three-dimensional warehouse provided with a large number of columns, it is necessary to add a foundation or the laminated rubber is relatively expensive. Therefore, there is a problem that the equipment cost of the three-dimensional warehouse increases. Also in Patent Document 2, since it is necessary to provide the first horizontal member and the second horizontal member, and further to provide a viscoelastic body for connecting the first horizontal member and the second horizontal member, the structure is There is a problem that the equipment cost of the three-dimensional warehouse increases due to the complexity. Furthermore, in Patent Document 2, the direction of base isolation is limited to the longitudinal direction in which the first horizontal member and the second horizontal member slide, and cannot be isolated from the direction perpendicular to the direction of the slide. There is a problem.

本発明は、上記従来の問題に鑑みてなしたもので、簡単な構成にて構造物を構成する柱に作用する揺れを、効果的に免震できるようにした免震構造を提供するものである。   The present invention has been made in view of the above-described conventional problems, and provides a seismic isolation structure that can effectively isolate a vibration acting on a column constituting a structure with a simple configuration. is there.

構造物を構成する柱の免震構造は、端部に接続部を有し構造物の柱を構成する複数の柱部材と、両端部に前記柱部材の端部と接続する接続部を有し、二つの前記柱部材の間に配設されて前記接続部で接続し、傾くことで構造物を構成する柱を免震する免震柱と、前記柱部材と前記免震柱を、免震機能を持たせながら拘束する拘束部材と、を備え、前記柱部材と前記免震柱の接続部は、外側へ出っ張る出っ張り部を有し、接続する際に重ね合わされ、前記拘束部材は、重ね合わされた前記柱部材と前記免震柱の出っ張り部を挟み込む一対の挟み込み部が形成され、前記柱部材の出っ張り部と前記免震柱の出っ張り部とのいずれか一方に前記一対の挟み込み部の一方が固定され、前記柱部材の出っ張り部と前記免震柱の出っ張り部とのいずれか他方に対して前記一対の挟み込み部の他方が前記免震柱を傾き可能にする隙間を持っていることを特徴としている。   The seismic isolation structure for a pillar constituting a structure has a plurality of pillar members that have connection portions at the ends and constitute pillars of the structure, and connection portions that connect to the end portions of the pillar members at both ends. The seismic isolation column disposed between the two column members, connected at the connecting portion, and tilted to insulate the columns constituting the structure, and the column member and the seismic isolation column are seismically isolated. A constraining member that constrains while having a function, and the connecting portion of the column member and the seismic isolation column has a protruding portion protruding outward, and is overlapped when connecting, and the constraining member is overlapped A pair of sandwiching portions that sandwich the projecting portion of the column member and the seismic isolation column are formed, and one of the pair of sandwiching portions is provided on either the projecting portion of the column member or the projecting portion of the seismic isolation column. Any one of the protruding part of the column member fixed and the protruding part of the seismic isolation column The other of the pair of sandwiching portions are characterized in that with a gap that allows the inclination of the MenShinhashira respect.

隙間を持って配された前記挟み込み部は、内側へ傾いていることが好ましい。   It is preferable that the sandwiching portion arranged with a gap is inclined inward.

前記柱部材の出っ張り部と前記免震柱の出っ張り部とを、互いの接触面を弾性的に押し付けるトリガ機構を更に備えることが好ましい。   It is preferable to further include a trigger mechanism that elastically presses the contact portion between the protruding portion of the column member and the protruding portion of the seismic isolation column.

本発明の構造物を構成する柱の免震構造によれば、簡単な構成にて構造物を構成する柱に作用する揺れを、効果的に免震できる。   According to the seismic isolation structure of the column that constitutes the structure of the present invention, it is possible to effectively isolate the vibration that acts on the column that constitutes the structure with a simple configuration.

（ａ）は、立体倉庫の側面図である。（ｂ）は、立体倉庫の正面図であり、図１（ａ）のＩＢ−ＩＢ矢視図である。(A) is a side view of a three-dimensional warehouse. (B) is a front view of a three-dimensional warehouse, and is an IB-IB arrow view of FIG. 1 (a). （ａ）は、構造物を構成する柱の平常時を示した図である。（ｂ）は、免震柱が傾いて構造物を構成する柱を免震する様子を示した図である。(A) is the figure which showed the normal time of the pillar which comprises a structure. (B) is the figure which showed a mode that the seismic isolation pillar inclines and the pillar which comprises a structure is isolated. （ａ）は、拘束部材の配置例を示した平面図であり、図２（ａ）のＩＩＩＡ−ＩＩＩＡ矢視図である。（ｂ）は、拘束部材の他の変形例を示した平面図である。（ｃ）は、拘束部材のその他の変形例を示した図である。(A) is the top view which showed the example of arrangement | positioning of a restraint member, and is a IIIA-IIIA arrow directional view of Fig.2 (a). (B) is the top view which showed the other modification of the restraint member. (C) is the figure which showed the other modification of the restraint member. （ａ）は、平常時の立体倉庫の側面を示す側面図である。（ｂ）は、免震柱が傾いて立体倉庫を構成する柱を免震する様子を示した図である。(A) is a side view which shows the side of the three-dimensional warehouse of normal times. (B) is the figure which showed a mode that the seismic isolation pillar inclines and the pillar which comprises a three-dimensional warehouse is isolated. （ａ）は、トリガ機構を更に備えた構造物を構成する柱における平常時を示す側面図である。（ｂ）は、トリガ機構を更に備えた構造物を構成する柱における地震時を示す側面図である。(A) is a side view which shows the normal time in the pillar which comprises the structure further provided with the trigger mechanism. (B) is a side view which shows the time of the earthquake in the pillar which comprises the structure further provided with the trigger mechanism. （ａ）は、構造物を構成する柱の参考例における平常時を示した図である。（ｂ）は、免震柱が傾いて構造物を構成する柱を免震する様子を示した図である。(A) is the figure which showed the normal time in the reference example of the pillar which comprises a structure. (B) is the figure which showed a mode that the seismic isolation pillar inclines and the pillar which comprises a structure is isolated. （ａ）は免震構造を備えない立体倉庫を示し、（ｂ）は免震構造を一段に備えた立体倉庫の場合を示し、（ｃ）は免震構造を二段に備えた立体倉庫の場合を示している。(A) shows a three-dimensional warehouse without a seismic isolation structure, (b) shows the case of a three-dimensional warehouse with a base isolation structure, (c) shows a three-dimensional warehouse with a base isolation structure in two stages. Shows the case.

以下、本発明を実施するための形態の例（以下、本実施例と称する。）を図１〜図７を参照しながら説明する。   Hereinafter, an example of a mode for carrying out the present invention (hereinafter referred to as the present embodiment) will be described with reference to FIGS.

図１を参照しながら本発明の構造物を構成する柱１の免震構造５を適用する構造物の一例として立体倉庫１００で説明する。図１（ａ）は、立体倉庫１００の側面図である。図１（ｂ）は、立体倉庫１００の正面図であり、図１（ａ）におけるＩＢ−ＩＢ矢視図である。   A three-dimensional warehouse 100 will be described as an example of a structure to which the seismic isolation structure 5 of the pillar 1 constituting the structure of the present invention is applied with reference to FIG. FIG. 1A is a side view of the three-dimensional warehouse 100. FIG.1 (b) is a front view of the three-dimensional warehouse 100, and is a IB-IB arrow line view in Fig.1 (a).

立体倉庫（構造物）１００は、複数の鋼鉄製の柱（構造物を構成する柱）１と複数段の鋼鉄製の梁２を備えることにより複数のラック３（棚）が立体的に組み立てられた構成を有している。立体倉庫１００は、スタッカークレーン４を挟む位置に所要の高さを有して立設され、スタッカークレーン４の走行方向に沿って延びる長さを有し、スタッカークレーン４の走行方向と直交する方向の幅は、格納される荷に対応した狭い幅となっている。また、前記立体倉庫１００を構成する複数の柱１は、ラック３の荷の重量を支持するための高い強度を有している。   The three-dimensional warehouse (structure) 100 includes a plurality of racks 3 (shelf) three-dimensionally assembled by including a plurality of steel columns (columns constituting the structure) 1 and a plurality of steel beams 2. It has a configuration. The three-dimensional warehouse 100 is erected with a required height at a position sandwiching the stacker crane 4, has a length extending along the traveling direction of the stacker crane 4, and is orthogonal to the traveling direction of the stacker crane 4. Is a narrow width corresponding to the load to be stored. The plurality of pillars 1 constituting the three-dimensional warehouse 100 have high strength for supporting the weight of the load of the rack 3.

図２（ａ）及び図３を参照しながら構造物を構成する柱１の免震構造５を説明する。図２（ａ）は、構造物を構成する柱１の平常時を示した図である。図３（ａ）は、拘束部材の配置例を示した平面図であり、図２（ａ）のＩＩＩＡ−ＩＩＩＡ矢視図である。（ｂ）は、拘束部材６の他の配置例を示した平面図である。（ｃ）は、拘束部材６のその他の配置例を示した図である。   The seismic isolation structure 5 of the pillar 1 constituting the structure will be described with reference to FIGS. Fig.2 (a) is the figure which showed the normal time of the pillar 1 which comprises a structure. Fig.3 (a) is the top view which showed the example of arrangement | positioning of a restraint member, and is a IIIA-IIIA arrow line view of Fig.2 (a). (B) is the top view which showed the other example of arrangement | positioning of the restraint member 6. FIG. (C) is the figure which showed the other example of arrangement | positioning of the restraint member 6. FIG.

構造物を構成する柱１における免震構造５は、複数の柱部材７と、二つの柱部材７の間に配設される免震柱８と、柱部材７と免震柱８を、免震機能を持たせながら拘束する拘束部材６と、を備えている。構造物を構成する柱１は、複数の柱部材７と、二つの柱部材７の間に配設される免震柱８を有している。   The seismic isolation structure 5 in the column 1 constituting the structure exempts the plurality of column members 7, the seismic isolation column 8 disposed between the two column members 7, the column member 7 and the seismic isolation column 8. And a restraining member 6 that restrains while having a seismic function. The column 1 constituting the structure has a plurality of column members 7 and a seismic isolation column 8 disposed between the two column members 7.

柱部材７は、例えば、角型鋼材であり構造物の柱１を構成する。柱部材７は、一端部又は両端部から外側へ出っ張る平面形状が矩形状のフランジ７ａ（出っ張り部）が形成されている。このフランジ７ａは、柱部材７の端部とで免震柱８と接続する際の接続部となる。   The column member 7 is, for example, a square steel material and constitutes the column 1 of the structure. The pillar member 7 is formed with a flange 7a (protruding portion) having a rectangular planar shape protruding outward from one end portion or both end portions. The flange 7 a becomes a connection portion when connecting to the seismic isolation column 8 at the end of the column member 7.

免震柱８は、例えば、角型鋼材である。免震柱８は、両端部に外側へ出っ張る矩形状のフランジ８ａ、８ｂが形成されている。以下、説明の便宜上、図中上側に形成されたフランジを上側フランジ８ａ、下側に形成されたフランジを下側フランジ８ｂと呼ぶ。この上側フランジ８ａと下側フランジ８ｂは、免震柱８の両端部とで柱部材７と接続する際の接続部となる   The seismic isolation column 8 is, for example, a square steel material. The seismic isolation column 8 is formed with rectangular flanges 8a and 8b projecting outward at both ends. Hereinafter, for convenience of explanation, the flange formed on the upper side in the drawing is called the upper flange 8a, and the flange formed on the lower side is called the lower flange 8b. The upper flange 8 a and the lower flange 8 b serve as connection portions when connecting to the column member 7 at both ends of the seismic isolation column 8.

上側フランジ８ａ、下側フランジ８ｂは、柱部材７に形成されたフランジ７ａと同形状のものであり柱部材７との接続部となる。免震柱８は、接続される際、上側フランジ８ａと下側フランジ８ｂが同形状である柱部材７のフランジ７ａに互いの面同士が重ね合わされて接続される。免震柱８は、二つの柱部材７の間に配設される。そして、免震柱８は、二つの柱部材７に対して傾くことで構造物を構成する柱１を免震する。   The upper flange 8 a and the lower flange 8 b have the same shape as the flange 7 a formed on the column member 7 and serve as a connection portion with the column member 7. When the seismic isolation column 8 is connected, the upper and lower flanges 8a and 8b are connected to the flange 7a of the column member 7 having the same shape, with their surfaces overlapped. The seismic isolation column 8 is disposed between the two column members 7. And the seismic isolation column 8 insulates the column 1 which comprises a structure by inclining with respect to the two column members 7. FIG.

ここで、免震柱８は、上側フランジ８ａと下側フランジ８ｂが柱部材７のフランジ７ａと重ね合わされる。このとき、この重ね合わされたフランジ８ａ（８ｂ）、７ａは、免震柱８と柱部材７の自重によりフランジ面が密着される。これにより免震柱８は、小さな荷重で傾かないトリガ機能を有する。   Here, in the seismic isolation column 8, the upper flange 8 a and the lower flange 8 b are overlapped with the flange 7 a of the column member 7. At this time, the flange surfaces of the overlapped flanges 8 a (8 b) and 7 a are brought into close contact with the seismic isolation column 8 and the weight of the column member 7. Thereby, the seismic isolation column 8 has a trigger function which does not tilt with a small load.

なお、柱部材７と免震柱８を角型鋼材で説明したがこれに限定されるものではない。柱形状で、且つ、端部にフランジが形成されていれば良く、例えば、フランジ付きの丸型鋼材、Ｈ型鋼材、Ｉ型鋼材、Ｚ型鋼材でも良い。また、柱部材７と免震柱８のフランジ７ａ，８ａ（８ｂ）を矩形状で説明したがこれに限定されるものではない、例えば、円形状でも良い。   In addition, although the column member 7 and the seismic isolation column 8 were demonstrated with the square steel material, it is not limited to this. It is only necessary to have a columnar shape and a flange at the end. For example, a round steel material with a flange, an H-type steel material, an I-type steel material, or a Z-type steel material may be used. Further, the flanges 7a and 8a (8b) of the column member 7 and the seismic isolation column 8 have been described in a rectangular shape, but the present invention is not limited to this. For example, a circular shape may be used.

拘束部材６は、柱部材７と免震柱８を、免震機能を持たせながら拘束する。なお、図２（ａ）中では、正面に配設された拘束部材６を省略して示している。拘束部材６は、帯状の部材の両側を折り曲げて形成された断面がコの字形状の溝型鋼で、平面を有する基部６ａと一対の挟み込み部６ｂ，６ｃと、を有している。拘束部材６は、一方の挟み込み部６ｂの面が基部６ａの平面と直交するようになっている。   The restraining member 6 restrains the column member 7 and the seismic isolation column 8 while providing the seismic isolation function. In FIG. 2A, the restraining member 6 disposed on the front is omitted. The restraining member 6 is a groove steel having a U-shaped cross section formed by bending both sides of a band-shaped member, and has a base portion 6a having a flat surface and a pair of sandwiching portions 6b and 6c. The restraining member 6 is configured such that the surface of one sandwiched portion 6b is orthogonal to the plane of the base portion 6a.

他方の挟み込み部６ｃは、先端に向かうに従って一方の挟み込み部６ｂに近づくように内側へ傾いている。すなわち、他方の挟み込み部６ｃは、拘束部材６の溝幅を狭めるように内側へ傾いている。   The other sandwiching portion 6c is inclined inward so as to approach one sandwiching portion 6b toward the tip. That is, the other sandwiching portion 6 c is inclined inward so as to narrow the groove width of the restraining member 6.

ここで、他方の挟み込み部６ｃの傾きは、免震柱８が傾くとフランジ８ａ（８ｂ）と面接触する傾きとなっている。他方の挟み込み部６ｃの傾きは、免震柱８の傾きを所定の傾きに制限する。   Here, the inclination of the other sandwiching portion 6c is an inclination that makes surface contact with the flange 8a (8b) when the seismic isolation column 8 is inclined. The inclination of the other sandwiching portion 6c limits the inclination of the seismic isolation column 8 to a predetermined inclination.

この拘束部材６は、重ね合わされた柱部材７のフランジ７ａと免震柱８のフランジ８ａ（または、フランジ８ｂ）を挟み込むように配される。具体的には、拘束部材６は、一方の挟み込み６ｂが柱部材７のフランジ７ａに固定され、他方の挟み込み部６ｃが免震柱８のフランジ８ａ，８ｂと所定の隙間を持って位置するように配される。   The restraining member 6 is arranged so as to sandwich the flange 7a of the column member 7 and the flange 8a (or the flange 8b) of the seismic isolation column 8 that are overlapped. Specifically, the restraining member 6 is configured such that one sandwiching 6b is fixed to the flange 7a of the column member 7 and the other sandwiching portion 6c is positioned with a predetermined gap from the flanges 8a and 8b of the seismic isolation column 8. Arranged.

なお、拘束部材６は、他方の挟み込み部６ｃが柱部材７のフランジ７ａに固定され、一方の挟み込み部６ｂが免震柱８のフランジ８ａ，８ｂと所定の隙間を持って位置するように配される態様でも良い。すなわち、柱部材７のフランジ７ａと免震柱８のフランジ８ａ，８ｂとのいずれか一方に一対の挟み込み部６ｂ，６ｃの一方が固定され、柱部材７のフランジ７ａと免震柱８のフランジ８ａ，８ｂとのいずれか他方に一対の挟み込み部６ｂ，６ｃの他方が隙間を持って位置するように配設しても良い。   The restraining member 6 is arranged so that the other sandwiching portion 6c is fixed to the flange 7a of the column member 7 and the one sandwiching portion 6b is positioned with a predetermined gap from the flanges 8a and 8b of the seismic isolation column 8. It may be an embodiment. That is, one of the pair of sandwiching portions 6b and 6c is fixed to either the flange 7a of the column member 7 or the flanges 8a and 8b of the seismic isolation column 8, and the flange 7a of the column member 7 and the flange of the seismic isolation column 8 You may arrange | position so that the other of a pair of clamping part 6b, 6c may be located in a gap between either one of 8a and 8b.

拘束部材６は、例えば、図３（ａ）で示すとおり、平面形状が矩形状のものを柱部材７と免震柱８の重ねられたフランジ７ａ，８ａ（８ｂ）の四方に二個ずつ計八個配設される。拘束部材６は、このように配されると、免震柱８が柱部材７に対して水平移動するのを拘束し、免震柱８が柱部材７に対して水平二軸方向に傾くことを許容する。ここで、所定の隙間を持ってとは、免震柱８を柱部材７に対して傾き可能にする隙間を持っていることをいう。なお、拘束部材６は、免震柱８が傾くために免震柱８が柱部材７に対して水平方向へ微小移動するのは許容する。   For example, as shown in FIG. 3A, the restraining member 6 is a two-dimensional shape having a rectangular planar shape on each side of the flanges 7a and 8a (8b) where the column member 7 and the seismic isolation column 8 are overlapped. Eight are arranged. When the restraining member 6 is arranged in this manner, the seismic isolation column 8 restrains the horizontal movement with respect to the column member 7, and the seismic isolation column 8 tilts in the horizontal biaxial direction with respect to the column member 7. Is acceptable. Here, having a predetermined gap means having a gap that allows the seismic isolation column 8 to tilt with respect to the column member 7. The restraining member 6 allows the seismic isolation column 8 to slightly move in the horizontal direction with respect to the column member 7 because the seismic isolation column 8 is inclined.

なお、本実施例において、拘束部材６は、平面形状が矩形状、断面がコの字形状である溝形の溝型鋼を柱部材７と免震柱８の重ねられたフランジ７ａ，８ａ（８ｂ）の四方に二個ずつ計八個配設した態様で説明したがこれに限定されるものではなく免震柱８が柱部材７に対して水平移動するのを拘束し、免震柱８が柱部材７に対して所定位置まで傾くことを許容できれば良い。   In this embodiment, the constraining member 6 is a groove-shaped steel having a rectangular planar shape and a U-shaped cross section, and flanges 7a and 8a (8b) in which the column member 7 and the seismic isolation column 8 are overlapped. However, the present invention is not limited to this, and the seismic isolation column 8 is restrained from moving horizontally with respect to the column member 7 so that the seismic isolation column 8 It suffices to allow the column member 7 to tilt to a predetermined position.

例えば、拘束部材６は、一体物でも良いし、基部６ａと、一方の挟み込み部６ｂと、他方の挟み込み部６ｃと、がそれぞれ別体物でも良い。また、拘束部材６は、断面がコの字形状に限定されず、例えば、Ｕ字形状であっても良い。また、拘束部材６は、直方体のブロックに溝を施して一対の挟み込み部６ｂ、６ｃを形成しても良い。   For example, the restraining member 6 may be an integrated object, or the base portion 6a, one sandwiching portion 6b, and the other sandwiching portion 6c may be separate bodies. Further, the restraining member 6 is not limited to a U-shaped cross section, and may be, for example, a U shape. In addition, the restraining member 6 may form a pair of sandwiching portions 6b and 6c by forming a groove in a rectangular parallelepiped block.

図３（ｂ）、図３（ｃ）を参照して拘束部材６の変形例及びその他の変形例を説明する。図３（ｂ）は、拘束部材の他の変形例を示した平面図である。図３（ｃ）は、拘束部材のその他の変形例を示した図である。   With reference to FIG.3 (b) and FIG.3 (c), the modification of the restraint member 6 and another modification are demonstrated. FIG. 3B is a plan view showing another modification of the restraining member. FIG.3 (c) is the figure which showed the other modification of the restraint member.

拘束部材６の変形例は、平面形状がＬの字形である。また、拘束部材６の変形例は、横断面形状がコの字形である。すなわち、拘束部材６の変形例は、Ｌの字形の溝型鋼である。この拘束部材６の変形例は、重ねられた矩形状のフランジ７ａ、フランジ８ａの四隅にそれぞれ一つずつ計四個配設される。   A modification of the restraining member 6 is an L-shaped planar shape. Further, in the modified example of the restraining member 6, the cross-sectional shape is a U-shape. That is, a modification of the restraining member 6 is L-shaped channel steel. A total of four modified examples of the restraining member 6 are arranged at the four corners of the overlapping rectangular flange 7a and flange 8a.

拘束部材６の他の変形例は、平面形状がコの字形である。また、拘束部材６の他の変形例は、横断面形状がコの字形である。すなわち、拘束部材６の他の変形例は、コの字形の溝型鋼である。この拘束部材６の他の変形例は、重ねられた矩形状のフランジ７ａ、フランジ８ａに一対配設される。以上の拘束部材６は、免震柱８が柱部材７に対して水平移動するのを拘束し、免震柱８が柱部材７に対して水平二軸方向に傾くことを許容し、且つ、免震柱８と柱部材７が外れないように少なくとも一対配設される。   Another modification of the restraining member 6 has a U-shaped planar shape. Moreover, the other modified example of the restraint member 6 has a U-shaped cross section. That is, another modification of the restraining member 6 is a U-shaped groove steel. As another modification of the restraining member 6, a pair of rectangular flanges 7a and 8a are disposed. The above restraining member 6 restrains the seismic isolation column 8 from moving horizontally with respect to the column member 7, allows the seismic isolation column 8 to tilt in the horizontal biaxial direction with respect to the column member 7, and At least a pair of seismic isolation columns 8 and column members 7 are disposed so as not to come off.

図２（ｂ）を参照して、免震柱８が傾いて免震する様子を説明する。図２（ｂ）は、免震柱８が傾いて構造物を構成する柱１を免震する様子を示し、図の矢印に示すように右方向へ地震の揺れが発生した場合を示している。   With reference to FIG.2 (b), a mode that the seismic isolation column 8 inclines and tilts is demonstrated. FIG. 2 (b) shows a state in which the seismic isolation column 8 is tilted to isolate the column 1 constituting the structure, and shows a case where an earthquake shakes in the right direction as indicated by an arrow in the figure. .

図２（ｂ）に示すとおり、図の矢印に示すように右方向へ地震による揺れが発生したとする。構造物を構成する柱１は、下側の柱部材７が右方向へ移動し、上側の柱部材７が慣性によりその場にとどまろうとする。   As shown in FIG. 2 (b), it is assumed that a shake due to an earthquake occurs in the right direction as indicated by an arrow in the figure. In the pillar 1 constituting the structure, the lower pillar member 7 moves to the right, and the upper pillar member 7 tries to stay in place due to inertia.

そうすると、免震柱８は、上側フランジ８ａが柱部材７のフランジ７ａと右上の拘束部材６の基部６ａとがなすコーナー部を支点として回動し、下側フランジ８ｂが柱部材７のフランジ７ａと左下の拘束部材６の基部６ａとがなすコーナー部を支点として回動する。このとき、免震柱８は、上側フランジ８ａが左上の拘束部材６の他方の挟み込み部６ｃと面接触し、下側フランジ８ｂが右下の拘束部材６の他方の挟み込み部６ｃと面接触するまで回動する。免震柱８は、全体として柱部材７に対して傾くこととなる。   Then, the seismic isolation column 8 rotates with the upper flange 8a as a fulcrum at the corner formed by the flange 7a of the column member 7 and the base 6a of the upper right restraint member 6, and the lower flange 8b is the flange 7a of the column member 7. And a corner portion formed by the base portion 6a of the lower left restraining member 6 is rotated as a fulcrum. At this time, in the seismic isolation column 8, the upper flange 8 a is in surface contact with the other sandwiched portion 6 c of the upper left restraining member 6, and the lower flange 8 b is in surface contact with the other sandwiched portion 6 c of the lower right restraining member 6. Rotate until The seismic isolation column 8 is inclined with respect to the column member 7 as a whole.

以上により、地震が発生しその揺れが外力として構造物を構成する柱１に作用しても、免震柱８が傾くことにより、構造物を構成する柱１が免震され、構造物を構成する柱１に対して大きな応力が作用しなくなっている。また、免震柱８の傾きは、自重により復元されるが、それを超える外力が作用した場合でも、拘束部材６の他方の挟み込み部６ｃによって制限されるため、構造物を構成する柱１が倒壊することがない。   As described above, even if an earthquake occurs and the shaking acts on the pillar 1 constituting the structure as an external force, the pillar 1 constituting the structure is isolated from the earthquake by tilting the seismic isolation pillar 8 to constitute the structure. A large stress is no longer acting on the pillar 1 to be applied. Further, the inclination of the seismic isolation column 8 is restored by its own weight, but even when an external force exceeding it is applied, it is limited by the other sandwiching portion 6c of the restraining member 6, so that the column 1 constituting the structure is There is no collapse.

図４を参照しながら、免震柱８が傾いて立体倉庫１００を構成する柱１を免震する様子を説明する。図４（ａ）は、平常時の立体倉庫１００の側面を示す側面図である。図４（ｂ）は、免震柱８が傾いて立体倉庫１００を構成する柱１を免震する様子を示した図である。図４は、拘束部材６を省略して図示している。   With reference to FIG. 4, a state in which the seismic isolation column 8 is tilted and the column 1 constituting the three-dimensional warehouse 100 is isolated will be described. FIG. 4A is a side view showing a side surface of the three-dimensional warehouse 100 in a normal state. FIG. 4B is a diagram illustrating a state where the seismic isolation column 8 is tilted and the column 1 constituting the three-dimensional warehouse 100 is isolated. FIG. 4 is illustrated with the restraining member 6 omitted.

図４に示すとおり、立体倉庫１００は、免震柱８を同じ高さ位置に複数備えている。図４（ａ）の状態から、例えば、図４（ｂ）の矢印で示す様に地震によって右方向に揺れたとする。立体倉庫１００は、免震柱８を挟んで下側のラック３ｂが右方向へ移動する。このとき、上側のラック３ａは、慣性によりその場にとどまろうとする。   As shown in FIG. 4, the three-dimensional warehouse 100 includes a plurality of seismic isolation columns 8 at the same height position. From the state of FIG. 4 (a), for example, suppose that it shook rightward due to an earthquake as shown by the arrow in FIG. 4 (b). In the three-dimensional warehouse 100, the lower rack 3b moves rightward with the seismic isolation column 8 interposed therebetween. At this time, the upper rack 3a tries to stay in place due to inertia.

そうすると、複数の免震柱８は、上側が左、下側が右となるようそれぞれが同じ様に傾くようになっている。すなわち、立体倉庫１００は、免震柱８が傾くことで、上側のラック３ａをその場にとどめつつ下側のラック３ｂの水平変位を許容する。   Then, the plurality of seismic isolation columns 8 are inclined in the same manner so that the upper side is left and the lower side is right. That is, the three-dimensional warehouse 100 allows the horizontal displacement of the lower rack 3b while keeping the upper rack 3a in place by the seismic isolation column 8 being inclined.

以上により、地震が発生しその揺れが外力として立体倉庫１００に作用しても、免震柱８が傾くことにより構造物を構成する柱１が免震され、構造物を構成する柱１に対して大きな応力が作用しなくなっている。   As described above, even if an earthquake occurs and the shaking acts on the three-dimensional warehouse 100 as an external force, the column 1 constituting the structure is seismically isolated by tilting the seismic isolation column 8, and the column 1 constituting the structure Large stresses are not working.

なお、右方向へ地震による揺れが発生した場合で説明したが、図中、左方向へ地震による揺れが発生した場合、複数の免震柱８は、上側が右、下側が左となるようにそれぞれ同じように傾いて、構造物を構成する柱１を免震する。   In addition, although the case where a shake due to an earthquake occurred in the right direction has been described, in the figure, when a shake due to an earthquake occurs in the left direction, the seismic isolation columns 8 are arranged such that the upper side is on the right and the lower side is on the left. Each of them tilts in the same way, and the pillars 1 constituting the structure are isolated.

また、図中、奥から手前に向かう方向に揺れが発生した場合、複数の免震柱８は、上側が奥、下側が手前となるようにそれぞれ同じように傾いて、構造物を構成する柱１を免震する。同様に、図中、手前から奥に向かう方向に揺れが発生した場合、複数の免震柱８は、上側が手前、下側が奥となるようにそれぞれ同じように傾いて、構造物を構成する柱１を免震する。以上により、本発明の構造物を構成する柱１の免震構造５によれば、簡単な構成にて構造物を構成する柱１に作用する揺れを、水平二軸方向で効果的に免震できる。また、免震柱８は、上側フランジ８ａと下側フランジ８ｂが柱部材７のフランジ７ａと重ね合わされる。これにより免震柱８は、小さな荷重で傾かないトリガ機能を有する。   In addition, in the figure, when shaking occurs in the direction from the back to the front, the plurality of seismic isolation columns 8 are inclined in the same manner so that the upper side is the back and the lower side is the front, respectively, and the columns constituting the structure Isolate 1 Similarly, in the figure, when a vibration occurs in the direction from the front to the back, the plurality of seismic isolation columns 8 are inclined in the same manner so that the upper side is the front and the lower side is the back, thereby constituting the structure. Seismic isolation of pillar 1. As described above, according to the seismic isolation structure 5 of the column 1 constituting the structure of the present invention, the vibration acting on the column 1 constituting the structure with a simple configuration can be effectively isolated in the horizontal biaxial direction. it can. The seismic isolation column 8 has an upper flange 8 a and a lower flange 8 b overlapped with the flange 7 a of the column member 7. Thereby, the seismic isolation column 8 has a trigger function which does not tilt with a small load.

また、拘束部材６は、他方の挟み込み部６ｃが内側へ傾いている。これにより、拘束部材６の他方の挟み込み部は６ｃ、免震柱８が傾いた際に免震柱８のフランジ８ａ，８ｂと面接触する。したがって、拘束部材６の他方の挟み込み部６ｃと免震柱８のフランジ８ａ，８ｂとの接触応力を小さくする事ができ耐久力を高めることができる。   Further, the restraining member 6 has the other sandwiching portion 6c inclined inward. As a result, the other sandwiched portion of the restraining member 6 is in contact with the flanges 8a and 8b of the seismic isolation column 8 when the seismic isolation column 8 is tilted. Therefore, the contact stress between the other sandwiched portion 6c of the restraining member 6 and the flanges 8a and 8b of the seismic isolation column 8 can be reduced, and the durability can be increased.

図５を参照しながら本発明の構造物を構成する柱１の免震構造５における変形例を説明する。図５（ａ）は、トリガ機構１０を更に備えた構造物を構成する柱１における平常時を示す側面図である。図５（ｂ）は、トリガ機構１０を更に備えた構造物を構成する柱１における地震時を示す側面図である。   The modification in the seismic isolation structure 5 of the pillar 1 which comprises the structure of this invention is demonstrated referring FIG. FIG. 5A is a side view showing a normal state in the pillar 1 constituting the structure further including the trigger mechanism 10. FIG. 5B is a side view showing an earthquake in the pillar 1 constituting the structure further including the trigger mechanism 10.

なお、この変形例は、フランジ７ａ，８ａ（８ｂ）に形成された貫通孔１１とトリガ機構１０を更に備えた点を除きその基本的構成が上記実施例と同様であるため、上記実施例と同様の構成には同一の符号を付し、上記実施例の説明と重複することになる説明を省略する。   This modified example has the same basic configuration as the above example except that it further includes a through hole 11 formed in the flanges 7a, 8a (8b) and the trigger mechanism 10. The same reference numerals are given to the same components, and the description that overlaps the description of the above embodiment is omitted.

図５（ａ）に示すとおり、構造物を構成する柱１の免震構造５は、更にトリガ機構１０を備えている。トリガ機構１０は、例えば、拘束部材６が配設される位置（図３（ａ）参照）に対応するように八個配設される。トリガ機構１０は、連結ボルト材１２と、皿ばね１３と、ナット１４と、ワッシャ１５と、を有している。図５（ａ）は、説明の便宜上、一対のトリガ機構１０のみを示している。   As shown in FIG. 5A, the seismic isolation structure 5 of the pillar 1 constituting the structure further includes a trigger mechanism 10. For example, eight trigger mechanisms 10 are arranged so as to correspond to the positions (see FIG. 3A) where the restraining members 6 are arranged. The trigger mechanism 10 includes a connecting bolt member 12, a disc spring 13, a nut 14, and a washer 15. FIG. 5A shows only a pair of trigger mechanisms 10 for convenience of explanation.

柱部材７のフランジ７ａと免震柱８の上側フランジ８ａ（下側フランジ８ｂ）は、互いに重ね合わされた状態で鉛直方向に貫通する貫通孔１１が形成されている。この貫通孔１１は、例えば、拘束部材６が配設される位置に対応するように八箇所形成される。連結ボルト材１２は、この貫通孔１１に下側から上側へ通され、重ね合わされたフランジ７ａ，８ａから突出した部分に弾性部材である皿ばね１３が通され、ワッシャ１５を介してナット１４で連結される。   A through hole 11 is formed in the flange 7a of the column member 7 and the upper flange 8a (lower flange 8b) of the seismic isolation column 8 so as to penetrate in the vertical direction while being overlapped with each other. For example, eight through holes 11 are formed so as to correspond to positions where the restraining members 6 are disposed. The connecting bolt material 12 is passed through the through-hole 11 from the lower side to the upper side, and a disc spring 13 as an elastic member is passed through the overlapping flanges 7 a and 8 a, and the nut 14 is passed through the washer 15. Connected.

トリガ機構１０は、柱部材７のフランジ７ａと免震柱８の上側フランジ８ａ（下側フランジ８ｂ）とを、互いの面を弾性的に押し付けるように作用する。また、皿ばね１３には、小規模の地震の発生による揺れによって、柱部材７のフランジ７ａと免震柱８の上側フランジ８ａ（下側フランジ８ｂ）とが開いて免震柱８が傾かない程度のばね力が与えられている。   The trigger mechanism 10 acts to elastically press the surfaces of the flange 7a of the column member 7 and the upper flange 8a (lower flange 8b) of the seismic isolation column 8 against each other. Further, the disc spring 13 is not tilted by opening the flange 7a of the column member 7 and the upper flange 8a (lower flange 8b) of the seismic isolation column 8 due to the shaking caused by the occurrence of a small-scale earthquake. A certain degree of spring force is applied.

図５（ｂ）に示すとおり、免震柱８が傾くと、柱部材７のフランジ７ａと免震柱８のフランジ８ａとが開き、トリガ機構１０の皿ばね１３が潰される。そうすると、トリガ機構１０は、皿ばね１３の復元力により柱部材７のフランジ７ａと免震柱８のフランジ８ａとを閉じるように作用する。ここで、皿ばね１３に代えて弾性部材としてコイルばねを選択しても良い。しかし、皿ばね１３は、変形剛性が高いうえに減衰効果を得られるためこれを用いるのが好ましい。   As shown in FIG. 5B, when the seismic isolation column 8 is tilted, the flange 7a of the column member 7 and the flange 8a of the seismic isolation column 8 are opened, and the disc spring 13 of the trigger mechanism 10 is crushed. Then, the trigger mechanism 10 acts to close the flange 7 a of the column member 7 and the flange 8 a of the seismic isolation column 8 by the restoring force of the disc spring 13. Here, instead of the disc spring 13, a coil spring may be selected as the elastic member. However, the disc spring 13 is preferably used because it has a high deformation rigidity and a damping effect.

以上のように、トリガ機構１０を更に備えた構造物を構成する柱の免震構造５によれば、小規模の地震の発生による揺れによって、柱部材７のフランジ７ａと免震柱８の上側フランジ８ａ（下側フランジ８ｂ）とが開いて免震柱８が傾かないように設定したトリガ機能を持たせることができる。また、トリガ機構１０は、弾性部材として皿ばね１３を用いていることから揺れによる荷重を減衰させることができる。   As described above, according to the seismic isolation structure 5 of the column that constitutes the structure further including the trigger mechanism 10, the upper side of the flange 7 a of the column member 7 and the seismic isolation column 8 due to the shaking caused by the occurrence of a small-scale earthquake. The trigger function set so that the flange 8a (lower flange 8b) opens and the seismic isolation column 8 does not tilt can be provided. Moreover, since the trigger mechanism 10 uses the disc spring 13 as an elastic member, it can attenuate the load caused by shaking.

また、トリガ機構１０を更に備えた構造物を構成する柱の免震構造５によれば、柱部材７のフランジ７ａと免震柱８の上側フランジ８ａ（下側フランジ８ｂ）とが開いた際に、傾いた免震柱８を積極的にもとの状態へ復元させることができる。   Further, according to the column seismic isolation structure 5 constituting the structure further including the trigger mechanism 10, the flange 7a of the column member 7 and the upper flange 8a (lower flange 8b) of the seismic isolation column 8 are opened. In addition, the tilted seismic isolation column 8 can be actively restored to the original state.

図６（ａ）を参照しながら構造物を構成する柱１の参考例を説明する。図６（ａ）は、構造物を構成する柱の参考例における平常時を示した図である。構造物を構成する柱１の参考例における免震構造５は、複数の柱部材２７と、二つの柱部材２７の間に配設される免震柱２８と、柱部材２７と免震柱２８を、免震機能を持たせながら拘束する拘束部材２６と、を備えている。構造物を構成する柱１は、複数の柱部材２７と、二つの柱部材２７の間に配設される免震柱２８を有している。 A reference example of the pillar 1 constituting the structure will be described with reference to FIG. Fig.6 (a) is the figure which showed the normal time in the reference example of the pillar which comprises a structure. The seismic isolation structure 5 in the reference example of the column 1 constituting the structure includes a plurality of column members 27, a seismic isolation column 28 disposed between the two column members 27, a column member 27, and the seismic isolation column 28. And a restraining member 26 that restrains the seismic isolation function. The column 1 constituting the structure has a plurality of column members 27 and a seismic isolation column 28 disposed between the two column members 27.

柱部材２７は、例えば、角柱の鋼材であり構造物の柱１を構成する。柱部材２７は、端部２７ａが免震柱２８と接続する際に接続部となる。端部２７ａは、例えば、平坦面となっている。   The column member 27 is, for example, a prismatic steel material and constitutes the column 1 of the structure. The column member 27 becomes a connection portion when the end portion 27 a is connected to the seismic isolation column 28. The end 27a is, for example, a flat surface.

免震柱２８は、例えば、柱部材２７よりも幅と奥行きの小さい角型鋼材である。免震柱２８は、両端部に外側へ出っ張る矩形状のフランジ２８ａ、２８ｂが形成されている。以下、説明の便宜上、図中上側に形成されたフランジを上側フランジ２８ａ、下側に形成されたフランジを下側フランジ２８ｂと呼ぶ。   The seismic isolation column 28 is, for example, a square steel material having a smaller width and depth than the column member 27. The seismic isolation column 28 is formed with rectangular flanges 28a and 28b projecting outward at both ends. Hereinafter, for convenience of explanation, a flange formed on the upper side in the drawing is referred to as an upper flange 28a, and a flange formed on the lower side is referred to as a lower flange 28b.

この上側フランジ２８ａと下側フランジ２８ｂは、免震柱２８の両端部とで柱部材２７と接続する際の接続部となる。免震柱２８は、二つの柱部材２７の間に配設される。そして、免震柱２８は、二つの柱部材２７に対して傾くことで構造物を構成する柱１を免震する。   The upper flange 28 a and the lower flange 28 b serve as connection portions when connecting to the column member 27 at both ends of the seismic isolation column 28. The seismic isolation column 28 is disposed between the two column members 27. And the seismic isolation column 28 insulates the pillar 1 which comprises a structure by inclining with respect to the two column members 27. FIG.

ここで、免震柱２８は、上側フランジ２８ａと下側フランジ２８ｂが柱部材２７の平坦面である端部２７ａと面接触する。このとき、接触面は、免震柱２８と柱部材２７の自重により密着される。これにより免震柱２８は、小さな荷重で傾かないトリガ機能を有する。   Here, in the seismic isolation column 28, the upper flange 28 a and the lower flange 28 b are in surface contact with the end portion 27 a which is a flat surface of the column member 27. At this time, the contact surface is brought into close contact with the seismic isolation column 28 and the weight of the column member 27. As a result, the seismic isolation column 28 has a trigger function that does not tilt with a small load.

拘束部材２６は、柱部材２７と免震柱２８を、免震機能を持たせながら拘束する。なお、図６（ａ）中では、正面に配設された拘束部材２６を省略して示している。拘束部材２６は、帯状の部材の片側を折り曲げて形成された断面がレ（Ｌ）の字形状で、平面を有する基部２６ａと挟み込み部２６ｃを有している。拘束部材２６は、基部２６ａが柱部材２７の側面に固定される。   The restraining member 26 restrains the column member 27 and the seismic isolation column 28 while providing the seismic isolation function. In FIG. 6A, the restraining member 26 disposed on the front is omitted. The constraining member 26 has a cross-section formed by bending one side of a belt-like member in a letter (L) shape, and has a base portion 26a having a flat surface and a sandwiching portion 26c. The restraining member 26 has a base portion 26 a fixed to the side surface of the column member 27.

拘束部材２６は、柱部材２７に固定されると、挟み込み部２６ｃが柱部材２７の端部２７ａとで免震柱２８のフランジ２８ａを挟み込む部分となる。そして、この部分に柱部材２７のフランジ２７ａ（２７ｂ）が配されると、挟み込み部２６ｃは、フランジ２７ａ（２７ｂ）に対して、所定の隙間を持って位置する。ここで、所定の隙間を持ってとは、免震柱８を柱部材７に対して傾き可能にする隙間を持っていることをいう。   When the restraining member 26 is fixed to the column member 27, the sandwiching portion 26 c becomes a portion that sandwiches the flange 28 a of the seismic isolation column 28 with the end portion 27 a of the column member 27. When the flange 27a (27b) of the column member 27 is disposed at this portion, the sandwiching portion 26c is positioned with a predetermined gap with respect to the flange 27a (27b). Here, having a predetermined gap means having a gap that allows the seismic isolation column 8 to tilt with respect to the column member 7.

拘束部材２６は、例えば、柱部材２７の四方に配設される。拘束部材２６は、このように配されると、免震柱２８が柱部材２７に対して水平移動するのを拘束し、免震柱２８が柱部材２７に対して傾くことを許容する。なお、拘束部材２６は、免震柱２８が傾くために免震柱２８が柱部材２７に対して水平方向へ微小移動するのは許容する。   The restraining member 26 is disposed, for example, on four sides of the column member 27. When the restraining member 26 is arranged in this manner, the seismic isolation column 28 is restrained from moving horizontally with respect to the column member 27, and the seismic isolation column 28 is allowed to tilt with respect to the column member 27. The restraining member 26 allows the seismic isolation column 28 to slightly move in the horizontal direction with respect to the column member 27 because the seismic isolation column 28 is inclined.

拘束部材２６の挟み込み部２６ｃは、先端に向かうに従って一方の挟み込み部６ｂに近づくように内側へ傾いている。すなわち、挟み込み部２６ｃは、隙間を狭めるように内側へ傾いている。ここで、挟み込み部２６ｃの傾きは、免震柱２８が傾くとフランジ２８ａ（２８ｂ）と面接触する大きさとなっている。挟み込み部２６ｃの傾きは、免震柱２８の傾きを所定の大きさに制限する。   The sandwiching portion 26c of the restraining member 26 is inclined inward so as to approach one sandwiching portion 6b toward the tip. That is, the sandwiching portion 26c is inclined inward so as to narrow the gap. Here, the inclination of the sandwiching portion 26c is such that when the seismic isolation column 28 is inclined, it comes into surface contact with the flange 28a (28b). The inclination of the sandwiching portion 26c limits the inclination of the seismic isolation column 28 to a predetermined size.

図６（ｂ）を参照して、免震柱２８が傾いて免震する様子を説明する。図６（ｂ）は、免震柱が傾いて構造物を構成する柱を免震する様子を示し、図の矢印に示すように右方向へ地震の揺れが発生した場合を示している。
図６（ｂ）に示すとおり、図の矢印に示すように右方向へ地震による揺れが発生したとする。構造物を構成する柱１は、下側の柱部材２７が右方向へ移動し、上側の柱部材２７が慣性によりその場にとどまろうとする。 With reference to FIG.6 (b), a mode that the seismic isolation column 28 inclines and insulates is demonstrated. FIG. 6B shows a state in which the seismic isolation column is tilted to isolate the column constituting the structure, and shows a case where an earthquake shakes in the right direction as indicated by an arrow in the figure.
As shown in FIG. 6B, it is assumed that a shake due to an earthquake occurs in the right direction as indicated by an arrow in the figure. In the pillar 1 constituting the structure, the lower pillar member 27 moves to the right, and the upper pillar member 27 tries to stay in place due to inertia.

そうすると、免震柱２８は、上側フランジ２８ａが柱部材２７の端部２７ａと右上の拘束部材２６の基部２６ａとがなすコーナー部を支点として回動し、下側フランジ２８ｂが柱部材２７の端部２７ａと左下の拘束部材２６の基部２６ａとがなすコーナー部を支点として回動する。このとき、免震柱２８は、上側フランジ２８ａが左上の拘束部材２６の挟み込み部６ｃと面接触し、下側フランジ８ｂが右下の拘束部材２６の挟み込み部２６ｃと面接触するまで回動する。免震柱２８は、全体として柱部材７２に対して傾くこととなる。   Then, the seismic isolation column 28 rotates with the upper flange 28 a as a fulcrum at the corner formed by the end portion 27 a of the column member 27 and the base portion 26 a of the upper right restraining member 26, and the lower flange 28 b is the end of the column member 27. The corner portion formed by the portion 27a and the base portion 26a of the lower left restraint member 26 is rotated as a fulcrum. At this time, the seismic isolation column 28 rotates until the upper flange 28a is in surface contact with the sandwiching portion 6c of the upper left restraining member 26 and the lower flange 8b is in surface contact with the sandwiching portion 26c of the lower right restraining member 26. . The seismic isolation column 28 is inclined with respect to the column member 72 as a whole.

以上により、地震が発生しその揺れが外力として構造物を構成する柱１に作用しても、免震柱２８が傾くことにより、構造物を構成する柱１が免震され、構造物を構成する柱１に対して大きな応力が作用しなくなっている。また、免震柱２８の傾きは、自重により復元されるが、それを超える外力が作用した場合でも、拘束部材２６の他方の挟み込み部２６ｃによって制限されるため、構造物を構成する柱１が倒壊することがない。また、先の実施例と比較し、柱部材２７がフランジを有していないため外側への出っ張りを抑えることができ、省スペース化を図ることができる。   As described above, even if an earthquake occurs and the shaking acts on the pillar 1 constituting the structure as an external force, the pillar 1 constituting the structure is isolated from the earthquake by tilting the seismic isolation pillar 28 to constitute the structure. A large stress is no longer acting on the pillar 1 to be applied. Further, the inclination of the seismic isolation column 28 is restored by its own weight, but even when an external force exceeding it is applied, it is limited by the other sandwiching portion 26c of the restraining member 26. There is no collapse. Further, as compared with the previous embodiment, since the column member 27 does not have a flange, the outward protrusion can be suppressed, and space saving can be achieved.

図７を参照しながら本発明の構造物を構成する柱１の免震構造５における他の変形例を説明する。図７（ａ）は免震構造５を備えない立体倉庫１００を示し、図７（ｂ）は免震構造５を一段に備えた立体倉庫１００の場合を示し、図７（ｃ）は免震構造５を二段に備えた立体倉庫１００の場合を示している。   The other modification in the seismic isolation structure 5 of the pillar 1 which comprises the structure of this invention is demonstrated referring FIG. FIG. 7 (a) shows a three-dimensional warehouse 100 without the seismic isolation structure 5, FIG. 7 (b) shows the case of the three-dimensional warehouse 100 with the seismic isolation structure 5 in one stage, and FIG. 7 (c) shows the seismic isolation. The case of the three-dimensional warehouse 100 provided with the structure 5 in two stages is shown.

なお、この変形例は、免震構造５を複数備えた点を除きその基本的構成が上記実施例と同様であるため、上記実施例と同様の構成には同一の符号を付し、上記実施例の説明と重複することになる説明を省略する。また、図７は、理解し易くするために模式的に示している。   Since this modification has the same basic configuration as that of the above embodiment except that a plurality of seismic isolation structures 5 are provided, the same components as those in the above embodiment are denoted by the same reference numerals, and the above embodiment is implemented. A description that overlaps with the description of the example is omitted. Further, FIG. 7 is schematically shown for easy understanding.

図７（ａ）のように、免震構造５を備えない立体倉庫１００では、地震により基礎が揺れると、立体倉庫１００に伝えられた揺れは、上部へ向かうほど大きな加速度での揺れとなる。   As shown in FIG. 7A, in the three-dimensional warehouse 100 without the seismic isolation structure 5, when the foundation is shaken due to the earthquake, the vibration transmitted to the three-dimensional warehouse 100 becomes a shake with a larger acceleration toward the upper part.

一方、図７（ｂ）に示すように一段の免震構造５を備えた立体倉庫１００では、免震構造５の免震作用によって、例えば、変形量δを吸収することができる。これにより、免震構造５よりも上部への揺れの伝わりを低減できる。これにより立体倉庫１００の上部の揺れを低減することができる。   On the other hand, as shown in FIG. 7B, in the three-dimensional warehouse 100 including the one-stage seismic isolation structure 5, for example, the deformation amount δ can be absorbed by the seismic isolation function of the seismic isolation structure 5. Thereby, the transmission of the vibration to the upper part rather than the seismic isolation structure 5 can be reduced. Thereby, the shaking of the upper part of the three-dimensional warehouse 100 can be reduced.

また、図７（ｃ）に示すように、構造物を構成する柱１に、上下二段の免震構造５を設けると、二段の免震構造５の免震作用により、例えば変形量２δを吸収することができるので、上段の免震構造５よりも上部の立体倉庫１００の揺れを更に低減することができる。したがって、図７（ｃ）に示すように、構造物を構成する柱１に、免震構造５を多段に設けると、免震の際に構造物が大きく変形する揺れを吸収することができる。   Further, as shown in FIG. 7 (c), when a two-stage seismic isolation structure 5 is provided on the pillar 1 constituting the structure, for example, a deformation amount 2δ is generated by the seismic isolation action of the two-stage seismic isolation structure 5. Therefore, the shaking of the three-dimensional warehouse 100 above the upper seismic isolation structure 5 can be further reduced. Therefore, as shown in FIG. 7 (c), when the seismic isolation structure 5 is provided in multiple stages on the pillar 1 constituting the structure, it is possible to absorb a shake that greatly deforms the structure during the seismic isolation.

なお、本発明の構造物を構成する柱の免震構造は、上述の実施例に示した立体倉庫１００の柱以外に、ボイラ鉄骨、立体パーキング、荷役設備等の構造物を構成する柱に適用できること、その他、本発明の要旨を逸脱しない範囲内において種々変更することができる。   In addition, the seismic isolation structure for the pillars constituting the structure of the present invention is applied to pillars constituting the structures such as boiler steel frames, three-dimensional parking, cargo handling facilities, etc. in addition to the pillars of the three-dimensional warehouse 100 shown in the above-described embodiment. Various modifications can be made without departing from the scope of the present invention.

１ 柱
５ 免震構造
６ 拘束部材
６ｂ 挟み込み部
６ｃ 挟み込み部
７ 柱部材
７ａ フランジ（出っ張り部）
８ 免震柱
８ａ フランジ（出っ張り部）
８ｂ フランジ（出っ張り部）
１０ トリガ機構
２６ 拘束部材
２６ａ 基部
２６ｃ 挟み込み部
２７ 柱部材
２７ａ 端部
２８ 免震柱
２８ａ フランジ
２８ｂ フランジ
１００ 立体倉庫（構造物） DESCRIPTION OF SYMBOLS 1 Column 5 Seismic isolation structure 6 Restraint member 6b Clamping part 6c Clamping part 7 Column member 7a Flange (protruding part)
8 Seismic isolation column 8a Flange (protruding part)
8b Flange (protruding part)
DESCRIPTION OF SYMBOLS 10 Trigger mechanism 26 Restraint member 26a Base part 26c Clamping part 27 Column member 27a End part 28 Seismic isolation column 28a Flange 28b Flange 100 Three-dimensional warehouse (structure)

Claims (3)

端部に接続部を有し構造物の柱を構成する複数の柱部材と、
両端部に前記柱部材の端部と接続する接続部を有し、二つの前記柱部材の間に配設されて前記接続部で接続し、傾くことで構造物を構成する柱を免震する免震柱と、
前記柱部材と前記免震柱を、免震機能を持たせながら拘束する拘束部材と、を備え、
前記柱部材と前記免震柱の接続部は、外側へ出っ張る出っ張り部を有し、接続する際に重ね合わされ、
前記拘束部材は、重ね合わされた前記柱部材と前記免震柱の出っ張り部を挟み込む一対の挟み込み部が形成され、
前記柱部材の出っ張り部と前記免震柱の出っ張り部とのいずれか一方に前記一対の挟み込み部の一方が固定され、前記柱部材の出っ張り部と前記免震柱の出っ張り部とのいずれか他方に対して前記一対の挟み込み部の他方が前記免震柱を傾き可能にする隙間を持っていることを特徴とする構造物を構成する柱の免震構造。 A plurality of pillar members having connection portions at the ends and constituting pillars of the structure;
It has a connection part that connects to the end part of the pillar member at both ends, is connected between the two pillar members, is connected at the connection part, and is isolated from the pillar constituting the structure by tilting. Seismic isolation columns,
A restraining member that restrains the pillar member and the seismic isolation column while having a seismic isolation function;
The connecting portion of the column member and the seismic isolation column has a protruding portion that protrudes outward, and is overlapped when connecting,
The restraining member is formed with a pair of sandwiching portions that sandwich the protruding portions of the column member and the seismic isolation column that are overlaid,
One of the pair of sandwiching portions is fixed to either one of the protruding portion of the column member and the protruding portion of the seismic isolation column, and the other of the protruding portion of the column member and the protruding portion of the seismic isolation column On the other hand, the other of the pair of sandwiching portions has a gap that allows the seismic isolation column to be tilted. 隙間を持って配された前記挟み込み部は、内側へ傾いていることを特徴とする請求項１に記載の構造物を構成する柱の免震構造。 2. The seismic isolation structure for a column constituting the structure according to claim 1 , wherein the sandwiching portions arranged with a gap are inclined inward. 前記柱部材の出っ張り部と前記免震柱の出っ張り部とを、互いの接触面を弾性的に押し付けるトリガ機構を更に備えたことを特徴とする請求項１又は２に記載の構造物を構成する柱の免震構造。 The structure according to claim 1 or 2 , further comprising a trigger mechanism that elastically presses the protruding portion of the column member and the protruding portion of the seismic isolation column against each other's contact surface. Seismic isolation structure of the pillar.
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