JP2016079655A

JP2016079655A - Base isolation structure

Info

Publication number: JP2016079655A
Application number: JP2014211398A
Authority: JP
Inventors: 晃祥大豊; Akiyoshi Otoyo
Original assignee: IHI Corp
Current assignee: IHI Corp
Priority date: 2014-10-16
Filing date: 2014-10-16
Publication date: 2016-05-16

Abstract

PROBLEM TO BE SOLVED: To provide a base isolation structure for isolating a shake acting on a construction with a simple constitution.SOLUTION: A base isolation structure includes a lower column member 5 constituting a foundation or a part of a construction, an upper column member 6 disposed on the lower column member 5 and constituting a part of the construction, and connecting and energizing means for connecting and energizing the upper column member 6 to the lower column member 5. The lower column member 5 and the upper column member 6 have a recess and protrusion loose fitting part 7 fitting in a recess and protrusion manner with a play so that the upper column member 6 is tilted to the lower column member 5.SELECTED DRAWING: Figure 2

Description

本発明は、サイロを格納するバンカー、ボイラ鉄骨、立体倉庫、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免震構造に関する。 The present invention relates to a seismic isolation structure that is applied to a structure such as a bunker for storing a silo, a boiler steel frame, a three-dimensional warehouse, a three-dimensional parking, and a cargo handling facility to reduce the shaking of the structure.

サイロを格納するバンカーは、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って立体的に組み立てられている。大規模な地震が発生した場合には、この立体倉庫が損壊する可能性がある。よって、このバンカー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 bunker that houses the silo is assembled three-dimensionally by having a plurality of steel columns and a plurality of steel beams. In the event of a large earthquake, this three-dimensional warehouse may be damaged. Therefore, it is considered that this bunker has a seismic isolation structure to increase the safety against earthquakes.

構造物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）。 As a seismic isolation structure of a structure, there is one having a base isolation structure made of laminated rubber between the lower ends of a plurality of columns constituting a three-dimensional warehouse and the foundation (Patent Document 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）。 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おそれがあった。 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 possibility that the equipment cost of the three-dimensional warehouse increases.

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おそれがあった。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おそれがあった。 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 was a risk that the equipment cost of the three-dimensional warehouse would increase 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 was a fear.

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に作用する揺れを免震する免震構造を提供することを目的とする。 The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a seismic isolation structure that isolates vibrations acting on a structure with a simple configuration.

本発明の免震構造は、基礎又は構造物の一部を構成する第一部材と、前記第一部材の上に配されて構造物の一部を構成する第二部材と、前記第二部材を前記第一部材に付勢する付勢手段と、を備え、前記第一部材と前記第二部材は、前記第二部材が前記第一部材に対して傾斜できるように遊びを持って凹凸嵌合する凹凸遊嵌部を備えたことを特徴としている。 The seismic isolation structure of the present invention includes a first member constituting a part of a foundation or a structure, a second member disposed on the first member and constituting a part of the structure, and the second member. Urging means for urging the first member, and the first member and the second member are recessed and fitted with play so that the second member can be inclined with respect to the first member. It is characterized by having a concave-convex loose fitting portion.

前記付勢手段は、弾性部材によって前記第二部材を前記第一部材に付勢することを特徴としている。 The biasing means biases the second member against the first member by an elastic member.

前記構造物は、平面視した際に長辺と短辺を有する矩形状であり、前記付勢手段は、長辺方向に沿い、且つ、短辺方向の外側位置となるように複数配されることを特徴としている。 The structure has a rectangular shape having a long side and a short side when viewed in plan, and a plurality of the biasing means are arranged along the long side direction and at outer positions in the short side direction. It is characterized by that.

本発明によれば、簡単な構成にて構造物に作用する揺れを免震することができる。 ADVANTAGE OF THE INVENTION According to this invention, the vibration which acts on a structure with a simple structure can be seismically isolated.

サイロを格納するバンカーを示した斜視図である。It is the perspective view which showed the bunker which stores a silo. （Ａ）は、柱部材の接続部である凹凸遊嵌部を拡大して示す斜視図である。（Ｂ）は、上側の柱部材を上方へ移動させて接続を外した様子を示す斜視図である。(A) is a perspective view which expands and shows the uneven | corrugated loose fitting part which is a connection part of a column member. (B) is a perspective view which shows a mode that the upper pillar member was moved upwards and the connection was removed. 柱部材の接続部である凹凸遊嵌部の断面図である。It is sectional drawing of the uneven | corrugated loose fitting part which is a connection part of a column member. （Ａ）は、平常時のバンカーの様子を示す斜視図であり、（Ｂ）は、地震時のバンカーの様子を示した斜視図である。(A) is the perspective view which shows the mode of the bunker in normal times, (B) is the perspective view which showed the mode of the bunker at the time of an earthquake. （Ａ）は、地震時において、上側の柱部材のうち左側の凹凸遊嵌部を示した断面図であり、（Ｂ）は、地震時において、上側の柱部材のうち右側の凹凸遊嵌部を示した断面図である。(A) is sectional drawing which showed the left uneven | corrugated loose fitting part among the upper pillar members at the time of an earthquake, (B) is the uneven | corrugated loose fitting part on the right side among the upper pillar members at the time of an earthquake. It is sectional drawing which showed. （Ａ）は、連結付勢手段の配設位置を変更した変形例を示す斜視図である。（Ｂ）は、連結付勢手段の配設位置を変更した変形例を示す断面図である。(A) is a perspective view which shows the modification which changed the arrangement | positioning position of a connection biasing means. (B) is sectional drawing which shows the modification which changed the arrangement | positioning position of a connection biasing means. 構造物の下側部分を示した平面図である。It is the top view which showed the lower part of the structure. （Ａ）は、凹凸遊嵌部の変形例を示す斜視図であり、（Ｂ）は、凹凸遊嵌部の変形例を示す断面図である。(A) is a perspective view which shows the modification of an uneven | corrugated loose fitting part, (B) is sectional drawing which shows the modification of an uneven | corrugated loose fitting part.

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５を参照しながら説明する。本実施例では、免震構造を、サイロ１１を格納するバンカー１（構造物）に適用した場合で説明する。図１は、サイロ１１を格納するバンカー１を示した斜視図である。 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. In the present embodiment, the case where the seismic isolation structure is applied to the bunker 1 (structure) storing the silo 11 will be described. FIG. 1 is a perspective view showing a bunker 1 for storing a silo 11.

バンカー１は、基礎２の上に建てられた複数の鋼鉄製の柱３と、複数の鋼鉄製の梁４と、を備えることによって立体的に組み立てられている。このバンカー１を構成する鋼鉄製の柱３は、下側の柱部材５（第一部材）、上側の柱部材６（第二部材）の二つの柱部材で構成されている。この下側の柱部材５と上側の柱部材６は、同じ長さでありその端部の凹凸遊嵌部７で接続されている。この凹凸遊嵌部７は、それぞれの柱３の同じ高さ位置に位置する。以下、説明の便宜上、構造物のうちこの凹凸遊嵌部７を境にして上側を構造物の上側部分８と称し、下側を構造物の下側部分９と称する。下側の柱部材５と上側の柱部材６は、同じ長さで説明したが同じ長さでなくても良い。 The bunker 1 is three-dimensionally assembled by including a plurality of steel pillars 3 built on the foundation 2 and a plurality of steel beams 4. The steel pillar 3 constituting the bunker 1 is composed of two pillar members, a lower pillar member 5 (first member) and an upper pillar member 6 (second member). The lower column member 5 and the upper column member 6 have the same length and are connected by an uneven loose fitting portion 7 at the end thereof. The uneven loose fitting portion 7 is located at the same height position of each column 3. Hereinafter, for convenience of explanation, the upper side of the structure with the uneven loose fitting portion 7 as a boundary is referred to as the upper portion 8 of the structure, and the lower side is referred to as the lower portion 9 of the structure. Although the lower column member 5 and the upper column member 6 have been described with the same length, they need not have the same length.

このバンカー１は、幅方向である短辺方向よりも奥行方向である長辺方向の方が長い形状となっており、長辺方向に沿ってサイロ１１が上部に支持されている。このサイロ１１は、例えば、サイロ１１へ投入される石炭を搬送するコンベヤ１２と、サイロ１１の払い口から払いだされた石炭を図示しないボイラへ搬送するコンベヤ１３と、の二つのコンベヤがサイロ１１の上下に配されている。サイロ１１の下方にコンベヤ１３が配置される構成を例示したがこれに限定されない。サイロ１１の下方には、石炭を粉末状にするミルや配管が配置されていても良い。 The bunker 1 has a longer shape in the long side direction, which is the depth direction, than the short side direction, which is the width direction, and the silo 11 is supported on the upper side along the long side direction. The silo 11 is composed of, for example, two conveyors: a conveyor 12 that conveys coal that is fed into the silo 11 and a conveyor 13 that conveys coal discharged from the outlet of the silo 11 to a boiler (not shown). It is arranged above and below. Although the configuration in which the conveyor 13 is disposed below the silo 11 is illustrated, the present invention is not limited to this. Below the silo 11, a mill or piping that turns coal into powder may be disposed.

図２及び図３を参照しながら、柱部材の接続部である凹凸遊嵌部７を説明する。図２（Ａ）は、柱部材の接続部である凹凸遊嵌部７を拡大して示す斜視図である。図２（Ｂ）は、上側の柱部材６を上へ移動させて接続を外した様子を示す斜視図である。図３は、柱部材の接続部である凹凸遊嵌部の断面図である。 With reference to FIGS. 2 and 3, the uneven loose fitting portion 7 which is a connecting portion of the column member will be described. FIG. 2A is an enlarged perspective view showing the uneven loose fitting portion 7 which is a connecting portion of the column member. FIG. 2B is a perspective view showing a state where the upper column member 6 is moved upward and disconnected. FIG. 3 is a cross-sectional view of the uneven loose fitting portion which is a connecting portion of the column member.

免震構造は、構造物の一部を構成する下側の柱部材５と、下側の柱部材５の上に配されて構造物の一部を構成する上側の柱部材６と、上側の柱部材６を下側の柱部材５に連結しながら付勢する連結付勢手段１４（付勢手段）と、を備えている。 The seismic isolation structure includes a lower pillar member 5 constituting a part of the structure, an upper pillar member 6 disposed on the lower pillar member 5 and constituting a part of the structure, and an upper pillar member 5 A connecting urging means 14 (urging means) that urges the column member 6 while linking the column member 6 to the lower column member 5;

下側の柱部材５は、中空の角形鋼材である。その下側の柱部材５の一方側の端部は、上側の柱部材６との凹凸遊嵌部７であり、端部から突出する凸部１５と、この凸部１５の周りを囲む平坦面部２５と、を有している。この凸部１５は、外形が直方体形状である。そして、この凸部１５の天面３５と平坦面部２５は、水平方向に対して平行である。また、凸部１５の天面３５は、矩形状であり、ボルト２０を通すための貫通孔３５ａが四個形成されている。この貫通孔３５ａは、天面３５と相似形の仮想矩形における頂点の位置に形成されている。なお、下側の柱部材５について、中空の角形鋼材を例示して説明したがこれに限定されない。下側の柱部材５は、連結付勢手段１４のうちボルト２０と圧縮コイルばね２２を配置可能な空間さえあれば、他の部分が中実であっても良い。すなわち、下側の柱部材５は、連結付勢手段１４のうちボルト２０と圧縮コイルばね２２を配置可能な空間が形成された中実の角形鋼材も含む。 The lower column member 5 is a hollow square steel material. One end portion of the lower column member 5 is an uneven loose fitting portion 7 with the upper column member 6, a convex portion 15 protruding from the end portion, and a flat surface portion surrounding the convex portion 15. 25. The convex portion 15 has a rectangular parallelepiped shape. The top surface 35 and the flat surface portion 25 of the convex portion 15 are parallel to the horizontal direction. Further, the top surface 35 of the convex portion 15 has a rectangular shape, and four through holes 35a for allowing the bolts 20 to pass therethrough are formed. The through-hole 35a is formed at the apex position in a virtual rectangle similar to the top surface 35. In addition, although the lower pillar member 5 was illustrated and demonstrated with the hollow square steel material, it is not limited to this. As long as the lower column member 5 has a space in which the bolt 20 and the compression coil spring 22 can be arranged in the connection biasing means 14, other portions may be solid. That is, the lower column member 5 also includes a solid square steel material in which a space in which the bolt 20 and the compression coil spring 22 can be arranged is formed in the coupling biasing means 14.

上側の柱部材６は、中空の角形鋼材である。その上側の柱部材６の他方側の端部は、下側の柱部材５との凹凸遊嵌部７であり、端部から凹んだ凹部１６と、この凹部１６の周りを囲む平坦面部２６と、を有している。この凹部１６の底面３６と平坦面部２６は、水平方向に対して平行である。また、この凹部１６は、凸部１５よりもその幅と奥行きが大きく、底面３６までの深さが凸部１５の高さと比較して浅くなっている。そして、この凹部１６の底面３６には、ボルト２０を通すための貫通孔３６ａが四個形成されている。そして、この貫通孔３６ａは、その形成位置が凸部１５に形成された貫通孔３５ａの位置と対応する位置に形成されている。なお、上側の柱部材６について、中空の角形鋼材を例示して説明したがこれに限定されない。上側の柱部材６は、下側の柱部材５に対して傾斜できるようにする凹部１６を有していれば良く、この凹部１６さえあれば、中実であっても良い。すなわち、上側の柱部材６は、凹部１６を有した中実の角形鋼材も含む。 The upper column member 6 is a hollow square steel material. The other end of the upper column member 6 is an uneven fitting portion 7 with the lower column member 5, a recess 16 recessed from the end, and a flat surface portion 26 surrounding the recess 16. ,have. The bottom surface 36 and the flat surface portion 26 of the recess 16 are parallel to the horizontal direction. Further, the recess 16 has a larger width and depth than the projection 15, and the depth to the bottom surface 36 is shallower than the height of the projection 15. The bottom surface 36 of the recess 16 is formed with four through holes 36a through which the bolts 20 are passed. The through hole 36 a is formed at a position corresponding to the position of the through hole 35 a formed in the convex portion 15. In addition, although the upper pillar member 6 was illustrated and demonstrated as a hollow square steel material, it is not limited to this. The upper column member 6 only needs to have a recess 16 that can be inclined with respect to the lower column member 5, and may be solid as long as this recess 16 is provided. That is, the upper column member 6 also includes a solid square steel material having the recess 16.

そして、この凹部１６は、下側の柱部材５の凸部１５が挿し込まれると、遊びを持って凹凸嵌合して上側の柱部材６と下側の柱部材５が接続される。この際、上側の柱部材６の荷重は、シート状の弾性部材１８を介した凹部１６の底面３６と凸部１５の天面３５との面接触によって支持されている。この際、上側の柱部材６の平坦面部２６と下側の柱部材５の平坦面部２５は、隙間を持って位置する。そして、下側の柱部材５と上側の柱部材６は、その接続部である凹凸遊嵌部７が遊びを持って凹凸嵌合することによって、上側の柱部材６が下側の柱部材５に対して傾斜することができる。傾斜する際は、先ず、上側の柱部材６における底面３６の辺が下側の柱部材５の天面に載置されたシート状の弾性部材１８に対して線接触して傾き、そして、上側の柱部材６における平坦面部２６が下側の柱部材５の平坦面部２５又は凸部１５に当接するまで傾斜する。 Then, when the convex portion 15 of the lower column member 5 is inserted into the concave portion 16, the concave portion 16 is engaged with the concave and convex portions so that the upper column member 6 and the lower column member 5 are connected. At this time, the load of the upper column member 6 is supported by surface contact between the bottom surface 36 of the concave portion 16 and the top surface 35 of the convex portion 15 via the sheet-like elastic member 18. At this time, the flat surface portion 26 of the upper column member 6 and the flat surface portion 25 of the lower column member 5 are positioned with a gap. Then, the lower column member 5 and the upper column member 6 are engaged with each other by the concave / convex loose fitting portion 7 which is a connecting portion thereof, so that the upper column member 6 becomes the lower column member 5. Can be inclined with respect to. When tilting, first, the side of the bottom surface 36 of the upper column member 6 is tilted in line contact with the sheet-like elastic member 18 placed on the top surface of the lower column member 5, and then the upper side. The flat surface portion 26 of the column member 6 is inclined until it contacts the flat surface portion 25 or the convex portion 15 of the lower column member 5.

シート状の弾性部材１８は、例えば、ゴムシートである。シート状の弾性部材１８は、金属と比較して体積変化の少ない非圧縮性材料である。このゴムシートは、凸部１５の天面３５と凹部１６の底面３６との間に介在させて圧縮荷重を受けると、非圧縮のために外側に張り出そうとするが、上下を面で拘束されているために変形することができず、結果的に高い剛性で圧縮荷重を支持する。また、シート状の弾性部材１８は、ゴムシートに限定されない。例えば、シリコーンのような発泡材料にて代替することもできる。また、シート状の弾性部材１８は、必須の構成ではなく、構成から外しても良い。 The sheet-like elastic member 18 is a rubber sheet, for example. The sheet-like elastic member 18 is an incompressible material with a small volume change compared to a metal. When this rubber sheet is interposed between the top surface 35 of the convex portion 15 and the bottom surface 36 of the concave portion 16 and receives a compressive load, the rubber sheet tends to bulge outward because of non-compression, but the upper and lower surfaces are constrained by the surface. Therefore, it cannot be deformed, and as a result, it supports a compressive load with high rigidity. Further, the sheet-like elastic member 18 is not limited to a rubber sheet. For example, a foam material such as silicone can be substituted. Further, the sheet-like elastic member 18 is not an essential configuration and may be removed from the configuration.

次に図３を参照しながら、連結付勢手段１４について説明する。図３は、柱部材の接続部である凹凸遊嵌部７の断面図である。図３に示すとおり、上側の柱部材６の凹部１６と、下側の柱部材５の凸部１５と、は、連結付勢手段１４によって連結されている。この連結付勢手段１４は、ボルト２０と、ナット２１と、圧縮コイルばね２２（弾性部材）と、を備えている。この連結付勢手段１４は、予め圧縮コイルばね２２が通されたボルト２０を、下側の柱部材５における凸部１５の内側から貫通孔３５ａを通すとともに、上側の柱部材６における凹部１６の底面３６に形成された貫通孔３６ａを通し、圧縮コイルばね２２が圧縮された状態でボルト２０の先端部分をナット２１で締結している。なお、連結付勢手段１４について、ボルト２０と、ナット２１と、圧縮コイルばね２２（弾性部材）と、を備えた構成を例示して説明したがこれに限定されない。例えば、連結付勢手段１４のうち、ナット２１を省略し、上側の柱部材６にネジ溝を形成し、このネジ溝にボルト２０を固定させるようにしても良い。 Next, the connection biasing means 14 will be described with reference to FIG. FIG. 3 is a cross-sectional view of the uneven loose fitting portion 7 that is a connecting portion of the column member. As shown in FIG. 3, the concave portion 16 of the upper column member 6 and the convex portion 15 of the lower column member 5 are coupled by the coupling biasing means 14. The connection urging means 14 includes a bolt 20, a nut 21, and a compression coil spring 22 (elastic member). The connecting biasing means 14 passes the through hole 35a from the inside of the convex portion 15 of the lower column member 5 through the bolt 20 through which the compression coil spring 22 has been passed in advance, and the concave portion 16 of the upper column member 6 of the concave portion 16. The tip end portion of the bolt 20 is fastened with the nut 21 while the compression coil spring 22 is compressed through the through hole 36 a formed in the bottom surface 36. In addition, although the connection urging means 14 has been described by exemplifying a configuration including the bolt 20, the nut 21, and the compression coil spring 22 (elastic member), it is not limited thereto. For example, the nut 21 may be omitted from the connection biasing means 14, a screw groove may be formed in the upper column member 6, and the bolt 20 may be fixed to the screw groove.

この予め圧縮された圧縮コイルばね２２は、上側の柱部材６の凹部１６を下側の柱部材５の凸部１５に付勢する付勢手段となる。ここで、付勢手段は、上側の柱部材６の自重と上側の柱部材６を介して伝わるサイロ１１の重さを含んだ構造物の上側部分８の重さも含んでいる。この付勢手段の付勢力は、上側の柱部材６が下側の柱部材５に対して傾斜する際のトリガーを決定するともに、上側の柱部材６が下側の柱部材５に対して傾斜したり、離れたりした際に元の状態に戻ろうとする復元力となる。 The pre-compressed compression coil spring 22 serves as a biasing unit that biases the concave portion 16 of the upper column member 6 to the convex portion 15 of the lower column member 5. Here, the biasing means also includes the weight of the upper portion 8 of the structure including the weight of the upper column member 6 and the weight of the silo 11 transmitted through the upper column member 6. The biasing force of the biasing means determines the trigger when the upper column member 6 tilts with respect to the lower column member 5, and the upper column member 6 tilts with respect to the lower column member 5. It becomes a restoring force that tries to return to the original state when it goes away.

また、このように予め圧縮された圧縮コイルばね２２を配置する構成は、圧縮コイルばね２２の強さを調整することでバンカー１の固有周期を調整することができる。 Moreover, the structure which arrange | positions the compression coil spring 22 compressed previously in this way can adjust the natural period of the bunker 1 by adjusting the strength of the compression coil spring 22.

また、上側の柱部材６の凹部１６と下側の柱部材５の凸部１５は、ボルト２０とナット２１による連結手段によって連結されており、上側の柱部材６における凹部１６の底面３６と、下側の柱部材５における凸部１５の天面３５と、が離れる距離が制限されている。これによって、上側の柱部材６が下側の柱部材５に対して傾斜したり、離れたりしても元の凹凸遊嵌の状態に戻るようになっており、バンカー１の倒壊が防止される。 Further, the concave portion 16 of the upper column member 6 and the convex portion 15 of the lower column member 5 are connected by a connecting means using a bolt 20 and a nut 21, and the bottom surface 36 of the concave portion 16 in the upper column member 6, The distance from the top surface 35 of the convex portion 15 in the lower column member 5 is limited. As a result, even if the upper column member 6 is inclined with respect to the lower column member 5 or separated from the lower column member 5, the original rugged loose fit is restored, and the bunker 1 is prevented from collapsing. .

この連結付勢手段１４は、下側の柱部材５と上側の柱部材６の内部に配設される構成で外部に露出されない。これによって、風雨の影響を受けず外部に配設される構成のものと比較して、メンテナンス回数を減らすことができる。 This connection biasing means 14 is not exposed to the outside because it is arranged inside the lower column member 5 and the upper column member 6. As a result, the number of maintenance operations can be reduced as compared with a configuration that is arranged outside without being affected by wind and rain.

図４及び図５を参照しながら、上側の柱部材６が下側の柱部材５に対して傾斜したり又は離間したりして地震の揺れを免震する様子を説明する。図４（Ａ）は、平常時のバンカー１の様子を示す斜視図であり、図４（Ｂ）は、地震時のバンカー１の様子を示した斜視図である。図５（Ａ）は、地震時において、上側の柱部材６のうち左側の凹凸遊嵌部７を示した断面図である。図５（Ｂ）は、地震時において、上側の柱部材６のうち右側の凹凸遊嵌部７を示した断面図である。 With reference to FIG. 4 and FIG. 5, a state where the upper column member 6 is tilted or separated from the lower column member 5 to avoid seismic shaking will be described. FIG. 4A is a perspective view showing a state of the bunker 1 in a normal state, and FIG. 4B is a perspective view showing a state of the bunker 1 at the time of an earthquake. FIG. 5A is a cross-sectional view showing the left concave-convex loose fitting portion 7 of the upper column member 6 during an earthquake. FIG. 5B is a cross-sectional view showing the right concave and convex loose fitting portion 7 of the upper column member 6 during an earthquake.

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が生じたとする。バンカー１は、地震の揺れに伴い構造物の下側部分９が右方向へ移動する。このとき、構造物の上側部分８は、慣性によりその場にとどまろうとする。 From the state of FIG. 4 (a), for example, suppose that shaking occurred in the right direction due to an earthquake as shown by the arrow in FIG. 4 (b). In the bunker 1, the lower portion 9 of the structure moves in the right direction in accordance with the shaking of the earthquake. At this time, the upper portion 8 of the structure tends to stay in place due to inertia.

そうすると、図５（Ａ）で示すとおり上側の柱部材６のうち左側が傾くとともに、図５（Ｂ）で示すとおり上側の柱部材６のうち右側が下側の柱部材５から離間する。すなわち、図４で示すとおり、バンカー１は、その構造物の上側部分８が上側の柱部材６のうち左側を支点としてロッキングする。このように上側の柱部材６が下側の柱部材５に対して傾斜したり、離間したりすることで、本来、上側の柱部材６から下側の柱部材５に対して生じる引張応力が低減される。 Then, the left side of the upper column member 6 is inclined as shown in FIG. 5A, and the right side of the upper column member 6 is separated from the lower column member 5 as shown in FIG. 5B. That is, as shown in FIG. 4, in the bunker 1, the upper portion 8 of the structure is locked with the left side of the upper column member 6 as a fulcrum. As the upper column member 6 is inclined or separated from the lower column member 5 in this way, the tensile stress originally generated from the upper column member 6 to the lower column member 5 is reduced. Reduced.

特に、バンカー１のように、サイロ１１のような重量物を含む構造物は、地震による揺れの際にその場に踏み止まろうとする慣性力が大きくなっている。このため、地震の揺れに伴って構造物の下側部分９が移動した際に、サイロ１１を含む構造物の上側部分８から構造物の下側部分９や基礎２に対し非常に大きな引張応力を生じさせる。 In particular, a structure including a heavy object such as the silo 11, such as the bunker 1, has a large inertial force to step on the spot when shaken by an earthquake. For this reason, when the lower part 9 of the structure moves in response to an earthquake, a very large tensile stress is applied from the upper part 8 of the structure including the silo 11 to the lower part 9 and the foundation 2 of the structure. Give rise to

しかしながら、バンカー１は、上述したとおり構造物の上側部分８を構成する上側の柱部材６が傾斜したり、離間したりすることで、構造物の上側部分８から構造物の下側部分９へ生じる引張応力が低減され、これによってバンカー１に作用する振動や作用する応力が低減される。 However, in the bunker 1, as described above, the upper column member 6 constituting the upper portion 8 of the structure is inclined or separated from the upper portion 8 of the structure to the lower portion 9 of the structure. The resulting tensile stress is reduced, thereby reducing vibrations acting on the bunker 1 and acting stresses.

以下、上述した実施例の変形例を説明する。先ず、図６を用いて連結付勢手段１４の配設位置を変更した変形例を説明する。図６（Ａ）は、連結付勢手段１４の配設位置を変更した変形例を示す斜視図である。図６（Ｂ）は、連結付勢手段１４の配設位置を変更した変形例を示す断面図である。なお、この連結付勢手段１４の変形例は、配設位置及び皿ばね２３を除き、上述した実施例の免震構造の構成と同様の構成であるため、上述した実施例と同様の構成には、同一の符号を付し、上述した実施例の説明と重複することになる説明を省略する。 Hereinafter, modifications of the above-described embodiment will be described. First, the modification which changed the arrangement | positioning position of the connection biasing means 14 is demonstrated using FIG. FIG. 6A is a perspective view showing a modified example in which the arrangement position of the connection urging means 14 is changed. FIG. 6B is a cross-sectional view showing a modification in which the arrangement position of the connection urging means 14 is changed. Since the modified example of the connection biasing means 14 is the same configuration as the configuration of the seismic isolation structure of the above-described embodiment except for the arrangement position and the disc spring 23, the configuration is the same as that of the above-described embodiment. Are denoted by the same reference numerals, and the description that overlaps the description of the above-described embodiment is omitted.

図６（Ａ）に示すとおり、下側の柱部材５の平坦面部２５には、貫通孔２５ａが、長辺方向に沿って凸部１５の両側に四個、短辺方向に沿って凸部１５の両側に二個形成されている。上側の柱部材６の平坦面部２６には、貫通孔２６ａが対応するように形成されている。そして、この変形例に係る連結付勢手段１４は、上側の柱部材６における平坦面部２６の貫通孔２６ａと下側の柱部材５における平坦面部２５の貫通孔２５ａにボルト２０を通して、皿ばね２３を圧縮した状態でナット２１を締結している。 As shown in FIG. 6A, the flat surface portion 25 of the lower column member 5 has four through holes 25a on both sides of the convex portion 15 along the long side direction and convex portions along the short side direction. Two are formed on both sides of 15. A through hole 26 a is formed in the flat surface portion 26 of the upper column member 6 so as to correspond thereto. The coupling urging means 14 according to this modification is configured by passing the bolt 20 through the through hole 26a of the flat surface portion 26 of the upper column member 6 and the through hole 25a of the flat surface portion 25 of the lower column member 5, and using the disc spring 23. The nut 21 is fastened in a compressed state.

この変形例の構成によれば、先の実施例と比較して柱部材の中心からより外側位置に連結付勢手段１４が配される構成となっている。これによって、傾斜する際のトリガーをより強く設定することができる。また、弾性部材として皿ばね２３を採用することによって揺れを減衰させる効果が得られる。 According to the configuration of this modified example, the connection urging means 14 is arranged at a more outer position from the center of the column member than in the previous embodiment. Thereby, the trigger at the time of inclining can be set more strongly. Moreover, the effect which attenuate | damps shaking is acquired by employ | adopting the disc spring 23 as an elastic member.

次に、図７を参照しながら、連結付勢手段１４の配設位置を変更した他の変形例を説明する。図７は、構造物の下側部分９を示した平面図である。図７に示すとおりバンカー１の四隅に下側の柱部材５が配されている。この下側の柱部材５は、平面視した際の長辺がバンカー１の長辺方向に沿うように配されている。 Next, another modification example in which the arrangement position of the connection urging means 14 is changed will be described with reference to FIG. FIG. 7 is a plan view showing the lower portion 9 of the structure. As shown in FIG. 7, lower pillar members 5 are arranged at the four corners of the bunker 1. The lower column member 5 is arranged such that the long side in plan view is along the long side direction of the bunker 1.

そして、下側の柱部材５の凸部１５の天面３５には、貫通孔３５ｂが、バンカーの長辺方向に沿うように、且つ、これらがバンカーの短辺方向の外側位置となるように複数形成される。また、上側の柱部材６における凹部１６の底面３６には、貫通孔が同様に先の貫通孔３５ｂと対応する位置に三個形成されている。 The through hole 35b is formed along the long side direction of the bunker in the top surface 35 of the convex portion 15 of the lower column member 5, and these are located outside the short side direction of the bunker. A plurality are formed. Further, three through holes are similarly formed on the bottom surface 36 of the recess 16 in the upper column member 6 at positions corresponding to the previous through holes 35b.

このように形成された凸部１５の貫通孔３５ｂと凹部１６の貫通孔にボルト２０が通され、圧縮コイルばね２２が圧縮された状態でナット２１によって締結されて連結付勢手段１４が構成される。上側の柱部材６が傾斜する際のトリガーは、この連結付勢手段によって、長辺方向よりも短辺方向の方が強く設定される。 The bolt 20 is passed through the through hole 35b of the convex part 15 and the through hole of the concave part 16 formed in this way, and the compression coil spring 22 is compressed and fastened by the nut 21 to constitute the coupling biasing means 14. The The trigger when the upper column member 6 is inclined is set stronger in the short side direction than in the long side direction by the connection biasing means.

ここで、構造物の上側部分８は、平面視した際に長辺方向と短辺方向を有した矩形状であり、その形状から長辺方向よりも短辺方向の向きに傾斜し易くなっている。すなわち、構造物の上側部分８は、その形状から長辺方向よりも短辺方向の方が傾斜する際のトリガーが小さくなっている。よって、本変形例の様に連結付勢手段１４を配すると、長辺方向と比較して傾斜し易くなっている短辺方向に対して、効果的にそのトリガーを強めることができる。 Here, the upper part 8 of the structure has a rectangular shape having a long side direction and a short side direction when viewed in plan, and the shape is more easily inclined in the direction of the short side direction than the long side direction. Yes. In other words, the upper portion 8 of the structure has a smaller trigger when the short side direction is inclined than the long side direction due to its shape. Therefore, when the connection urging means 14 is arranged as in this modification, the trigger can be effectively strengthened in the short side direction that is more easily inclined than in the long side direction.

続いて図８を参照しながら凹凸遊嵌部７の変形例を説明する。図８（Ａ）は、凹凸遊嵌部７の変形例を示す斜視図である。図８（Ｂ）は、凹凸遊嵌部７の変形例を示す断面図である。なお、この凹凸遊嵌部７の変形例は、荷重を受ける箇所を除き、上述した実施例の免震構造の構成と同様の構成であるため、上述した実施例と同様の構成には、同一の符号を付し、上述した実施例と説明と重複することになる説明を省略する。この変形例では、シート状の弾性部材１８を省略している。 Next, a modified example of the uneven loose fitting portion 7 will be described with reference to FIG. FIG. 8A is a perspective view showing a modification of the uneven loose fitting portion 7. FIG. 8B is a cross-sectional view showing a modification of the uneven loose fitting portion 7. In addition, since the modified example of this uneven | corrugated loose fitting part 7 is the structure similar to the structure of the seismic isolation structure of the Example mentioned above except the location which receives a load, it is the same in the structure similar to the Example mentioned above. The description which overlaps with the Example mentioned above and description is abbreviate | omitted. In this modification, the sheet-like elastic member 18 is omitted.

図８（Ａ）に示すとおり、変形例に係る凹凸遊嵌部７は、上側の柱部材６の荷重を、下側柱部材の平坦面部２５と上側の柱部材６の平坦面部２６との面接触によって支持する構成となっている。ここで、上側柱部材の平坦面部２６は凹部１６の外側に位置し、下側の柱部材５の平坦面部２５も凸部１５の外側に位置する。すなわち、上述した実施例よりも上側柱部材の荷重が中心から外側位置で支持される構成となっている。これによって、上側の柱部材６が傾斜する際のトリガーをより強めることができる。また、本変形例によれば、図８（Ｂ）で示すとおり外観が凹凸のない面一の構成とすることができる。 As shown in FIG. 8 (A), the uneven loose fitting portion 7 according to the modified example applies the load of the upper column member 6 to the surface of the flat surface portion 25 of the lower column member and the flat surface portion 26 of the upper column member 6. It is configured to support by contact. Here, the flat surface portion 26 of the upper column member is located outside the concave portion 16, and the flat surface portion 25 of the lower column member 5 is also located outside the convex portion 15. That is, the load of the upper column member is supported at the outer position from the center than in the above-described embodiment. Thereby, the trigger when the upper column member 6 is tilted can be further strengthened. Moreover, according to this modification, it can be set as the same structure without an unevenness | corrugation in an external appearance as shown in FIG.8 (B).

本発明の免震構造によれば、構造物の一部を構成する下側の柱部材５と、この下側の柱部材５の上に配されて構造物の一部を構成する上側の柱部材６と、上側の柱部材６を下側の柱部材５に付勢する連結付勢手段１４と、を備えている。そして、下側の柱部材５と上側の柱部材６は、上側の柱部材６が下側の柱部材５に対して傾斜したり、離間したりするように遊びを持って凹凸嵌合する凹凸遊嵌部７を備えている。これによって、上側の柱部材６が下側の柱部材５に対して傾斜したり、離間したりすることで、上側の柱部材６から下側の柱部材５に対して生じる引張応力が低減され、これによってバンカー１に作用する地震の揺れが免震されて、バンカーの倒壊のおそれが少なくなる。 According to the seismic isolation structure of the present invention, the lower pillar member 5 constituting a part of the structure, and the upper pillar disposed on the lower pillar member 5 and constituting a part of the structure. A member 6 and connection biasing means 14 for biasing the upper column member 6 to the lower column member 5 are provided. Then, the lower column member 5 and the upper column member 6 are unevenly fitted so that the upper column member 6 tilts and separates from the lower column member 5 with play. A loose fitting portion 7 is provided. Accordingly, the tensile stress generated from the upper column member 6 to the lower column member 5 is reduced by the upper column member 6 being inclined or separated from the lower column member 5. As a result, the shaking of the earthquake acting on the bunker 1 is isolated, and the risk of collapse of the bunker is reduced.

また、本発明の構造物の免震構造によれば、連結付勢手段１４（付勢手段）は、弾性部材である圧縮コイルばね２２又は皿ばね２３によって上側の柱部材６を下側の柱部材５に付勢している。これによって、上側の柱部材６が下側の柱部材５に対して傾斜する際のトリガーを決定するとともに、上側の柱部材６が下側の柱部材５に対して傾斜したり、離れたりした際に元の状態に戻ろうとする復元力を与える。そして、この弾性部材である圧縮コイルばね２２又は皿ばね２３のばねの強さを調整することで建物の固有周期を調整することもできる。 Further, according to the seismic isolation structure of the structure of the present invention, the connecting urging means 14 (the urging means) causes the upper column member 6 to be moved to the lower column by the compression coil spring 22 or the disc spring 23 which is an elastic member. The member 5 is biased. As a result, the trigger when the upper column member 6 is inclined with respect to the lower column member 5 is determined, and the upper column member 6 is inclined with respect to the lower column member 5 or separated. It gives you the resilience to return to the original state. And the natural period of a building can also be adjusted by adjusting the strength of the compression coil spring 22 or the disc spring 23 which is this elastic member.

また、本発明の免震構造によれば、連結付勢手段１４は、上側の柱部材６が下側の柱部材５に対して傾斜したり離れたりしても元の姿勢に戻れるように上側の柱部材６と下側の柱部材５を連結する。これによって、上側の柱部材６が下側の柱部材５に対して傾斜したり、離れたりしてもその自重又は弾性部材によって元の状態に戻ってバンカー１の倒壊が防止される。 Further, according to the seismic isolation structure of the present invention, the connection biasing means 14 is arranged so that the upper column member 6 can return to the original posture even if the upper column member 6 is inclined or separated from the lower column member 5. The column member 6 and the lower column member 5 are connected. As a result, even if the upper column member 6 is inclined or separated from the lower column member 5, the bunker 1 is prevented from collapsing due to its own weight or the elastic member.

また、本発明の免震構造によれば、構造物であるバンカー１は、平面視した際に長辺と短辺を有する矩形状であり、連結付勢手段１４は、長辺方向に沿い、且つ、短辺方向の外側位置となるように複数配されている。これによって、バンカー１の形状から長辺方向と比較して傾斜し易くなっている短辺方向に対して効果的に弾性部材によるトリガーを設定することができる。 Further, according to the seismic isolation structure of the present invention, the bunker 1 that is a structure has a rectangular shape having a long side and a short side when viewed in plan, and the connecting biasing means 14 is along the long side direction. In addition, a plurality of them are arranged so as to be located outside in the short side direction. Thereby, the trigger by an elastic member can be set effectively with respect to the short side direction which is easy to incline compared with the long side direction from the shape of the bunker 1.

また、本発明の免震構造によれば、上側の柱部材６と下側の柱部材５の間にシート状の弾性部材１８を介在させている。これによって、介在されたシート状の弾性部材１８は、緩衝材として作用し、上側の柱部材６と下側の柱部材５の接触に伴う高周波振動の発生を抑制する。 Further, according to the seismic isolation structure of the present invention, the sheet-like elastic member 18 is interposed between the upper column member 6 and the lower column member 5. As a result, the interposed sheet-like elastic member 18 acts as a cushioning material and suppresses the occurrence of high-frequency vibration associated with the contact between the upper column member 6 and the lower column member 5.

また、本発明の免震構造は、免震する構造物の垂直方向に複数段となるように複数の凹凸遊嵌部７を有する構成でも良い。このように配置すると、単段で免震する場合よりも、より大きな揺れを吸収できる。 Moreover, the structure which has the some uneven | corrugated loose-fitting part 7 may be sufficient as the seismic isolation structure of this invention so that it may become two or more steps in the orthogonal | vertical direction of the structure to isolate. If arranged in this way, a greater shaking can be absorbed than in the case of a single-stage seismic isolation.

なお、本発明の免震構造は、実施例において第一部材を下側の柱部材５とし、第二部材を上側の柱部材６とした構成で説明したがこれに限定されない。例えば、第一部材は、基礎２であっても良い。第一部材が基礎２の場合は、基礎２の上に建てられた構造物が基礎２に対してロッキングすることで構造物から基礎に生じる引張応力が低減される。 In addition, although the seismic isolation structure of this invention demonstrated in the Example the structure which made the 1st member the lower pillar member 5 and made the 2nd member the upper pillar member 6, it is not limited to this. For example, the first member may be the foundation 2. When the first member is the foundation 2, the structure built on the foundation 2 is locked with respect to the foundation 2, thereby reducing the tensile stress generated from the structure to the foundation.

また、本発明の免震構造は、実施例において上側の柱部材６に凹部１６を形成し、下側の柱部材５に凸部１５を形成する構成で説明したがこれに限定されない。上側の柱部材６に凸部１５を形成し、下側の柱部材５に凹部１６を形成する構成でも良い。この場合、連結付勢手段１４のうちボルト２０と圧縮コイルばね２２が上側に配置され、ナット２１が下側に配置される。すなわち、図３に示す構成において、天地逆となる。また、連結付勢手段１４は、ボルト２０と圧縮コイルばね２２が凸部１５の内部に配置され、ナット２１が凹部１６の底面３６における裏面に固定する構成で説明したがこれに限定されない。連結付勢手段１４は、ボルト２０と圧縮コイルばね２２が凹部１６の底面３６における裏面側に配置され、ナット２１が凸部１５の天面３５の裏面に固定するようにしても良い。 Moreover, although the seismic isolation structure of this invention demonstrated in the Example the structure which forms the recessed part 16 in the upper pillar member 6, and forms the convex part 15 in the lower pillar member 5, it is not limited to this. The convex part 15 may be formed in the upper column member 6, and the concave part 16 may be formed in the lower column member 5. In this case, the bolt 20 and the compression coil spring 22 are arranged on the upper side and the nut 21 is arranged on the lower side of the coupling biasing means 14. That is, in the configuration shown in FIG. Moreover, although the connection biasing means 14 has been described with the configuration in which the bolt 20 and the compression coil spring 22 are disposed inside the convex portion 15 and the nut 21 is fixed to the back surface of the bottom surface 36 of the concave portion 16, it is not limited thereto. In the connection biasing means 14, the bolt 20 and the compression coil spring 22 may be disposed on the back surface side of the bottom surface 36 of the concave portion 16, and the nut 21 may be fixed to the back surface of the top surface 35 of the convex portion 15.

また、下側の柱部材５と上側柱部材の端部には、端部から張り出す矩形状のフランジを有していても良い。また、このフランジは、長辺と短辺を有する長方形状、長軸と短軸を有する楕円も含み、また、一部が切り欠きされた形状も含んでも良い。 Moreover, you may have the rectangular flange which protrudes from an edge part in the edge part of the lower pillar member 5 and an upper pillar member. Further, the flange includes a rectangular shape having a long side and a short side, an ellipse having a long axis and a short axis, and may also include a shape in which a part is cut out.

また、連結付勢手段１４は、これに替えてボルト２０とナット２１のみで連結する連結手段のみで構成しても良い。この場合は、上側の柱部材６の自重、及びこの上側の柱部材６を介して作用する構造物の上側部分８の自重が付勢手段となってトリガーを決定する。この場合は、先の構成と比較して圧縮コイルばね２２が省略されるため、免震周期の調整と減衰効果を得られなくなるがコストを下げることができる。なお、連結付勢手段１４を構成する弾性部材について、圧縮コイルばね２２と皿ばね２３を例示したがこれに限定されない。連結付勢手段１４を構成する弾性部材は、上側の柱部材６の凹部１６を下側の柱部材５の凸部１５に付勢する機能を有する部材であればどのような部材が用いられても良い。また、図６で示す変形例で皿ばね２３を用いた構成で説明し、他の例で圧縮コイルばね２２を用いた構成で説明したがその構成に限定されるものでなく、圧縮コイルばね２２を用いた構成を皿ばね２３にしても良いし、皿ばね２３を用いた構成を、圧縮コイルばね２２を用いた構成にしても良い。そして、連結付勢手段１４を構成する弾性部材は、皿ばね２３を用いた方が、摩擦減衰が得られるため、こちらを用いる方が好ましい。 Alternatively, the connection urging means 14 may be constituted by only a connection means that is connected only by the bolt 20 and the nut 21 instead. In this case, the weight of the upper column member 6 and the weight of the upper portion 8 of the structure acting via the upper column member 6 serve as urging means to determine the trigger. In this case, since the compression coil spring 22 is omitted compared to the previous configuration, the adjustment of the seismic isolation period and the damping effect cannot be obtained, but the cost can be reduced. In addition, although the compression coil spring 22 and the disc spring 23 were illustrated about the elastic member which comprises the connection biasing means 14, it is not limited to this. As the elastic member constituting the coupling biasing means 14, any member may be used as long as it has a function of biasing the concave portion 16 of the upper column member 6 to the convex portion 15 of the lower column member 5. Also good. Moreover, although demonstrated with the structure which used the disc spring 23 in the modification shown in FIG. 6, and demonstrated with the structure using the compression coil spring 22 in another example, it is not limited to the structure, The compression coil spring 22 A configuration using the disc spring 23 may be used, and a configuration using the disc spring 23 may be a configuration using the compression coil spring 22. The elastic member constituting the coupling biasing means 14 is preferably used because the disk spring 23 is used to obtain frictional damping.

また、本発明の免震構造は、下側の柱部材５と上側の柱部材６の接続部において、凹凸遊嵌部７が一つである構成で説明したがこれに限定されない。下側の柱部材５と上側の柱部材６の接続部には、複数の凹凸遊嵌部７を形成して遊嵌させるようにしても良い。例えば、一方の柱部材の接続端における四隅に凹部１６を形成し、他方の柱部材の接続端における四隅に凸部１５を形成するようにしても良い。また、下側の柱部材５と上側の柱部材６の接続部が複数の凹凸遊嵌部７で遊嵌する場合、一方側の接続端を、凹部１６と凸部１５を組み合わせた構成とし、他方側の接続端もこれに対応するように凸部１５と凹部１６を組み合わせるようにしても良い。例えば、一方の柱部材の接続端における四隅に凹部１６をそれぞれ形成した上で真ん中に凸部１５を形成し、そして、他方の柱部材の接続端における四隅に凸部１５をそれぞれ形成した上で真ん中に凹部１６を形成するようにしても良い。また以上に説明した構成は、凹部１６とこれに対応する凸部１５に対して、連結付勢手段をその全てに配しても良いし、一部に配しても良いし、配さなくても良い。 Moreover, although the seismic isolation structure of this invention demonstrated the structure with the uneven | corrugated loose fitting part 7 in the connection part of the lower pillar member 5 and the upper pillar member 6, it is not limited to this. A plurality of concave and convex loose fitting portions 7 may be formed in the connecting portion between the lower pillar member 5 and the upper pillar member 6 so as to be loosely fitted. For example, the recesses 16 may be formed at the four corners at the connection end of one column member, and the projections 15 may be formed at the four corners at the connection end of the other column member. Moreover, when the connection part of the lower pillar member 5 and the upper pillar member 6 is loosely fitted by the plurality of concave and convex loose fitting parts 7, the connection end on one side has a configuration in which the concave part 16 and the convex part 15 are combined. The convex portion 15 and the concave portion 16 may be combined so that the other connection end also corresponds to this. For example, after forming the concave portions 16 at the four corners at the connection end of one column member and forming the convex portion 15 at the middle, and forming the convex portions 15 at the four corners at the connection end of the other column member, respectively. You may make it form the recessed part 16 in the middle. Moreover, the structure demonstrated above WHEREIN: With respect to the recessed part 16 and the convex part 15 corresponding to this, a connection biasing means may be distribute | arranged to all of it, may be distribute | arranged to one part, and it does not distribute May be.

また、本発明の免震構造は、上述の実施例に示したバンカー以外に、ボイラ鉄骨、立体パーキング、荷役設備等の様々な構造物に適用できる。 Further, the seismic isolation structure of the present invention can be applied to various structures such as boiler steel frames, three-dimensional parking, cargo handling facilities, etc. in addition to the bunker shown in the above-described embodiment.

また、本発明の免震構造は、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できる。 In addition, the seismic isolation structure of the present invention can be variously modified without departing from the gist of the present invention.

１バンカー（構造物）
２基礎（第一部材）
３柱
５下側の柱部材（第一部材）
６上側の柱部材（第二部材）
７凹凸遊嵌部
８構造物の上側部分
９構造物の下側部分
１４連結付勢手段 1 Bunker (structure)
2 Foundation (first member)
3 pillar 5 Lower pillar member (first member)
6 Upper column member (second member)
7 Concavity and convexity free fitting part 8 Upper part of structure 9 Lower part of structure 14 Connection biasing means

Claims

基礎又は構造物の一部を構成する第一部材と、
前記第一部材の上に配されて構造物の一部を構成する第二部材と、
前記第二部材を前記第一部材に付勢する付勢手段と、を備え、
前記第一部材と前記第二部材は、前記第二部材が前記第一部材に対して傾斜できるように遊びを持って凹凸嵌合する凹凸遊嵌部を備えたことを特徴とする構造物の免震構造。 A first member constituting a part of the foundation or structure;
A second member disposed on the first member and constituting a part of the structure;
Urging means for urging the second member to the first member,
The first member and the second member are provided with a concave and convex loose fitting portion that has a concave and convex fitting with play so that the second member can be inclined with respect to the first member. Seismic isolation structure.

前記付勢手段は、弾性部材によって前記第二部材を前記第一部材に付勢することを特徴とする請求項１に記載の構造物の免震構造。 The seismic isolation structure for a structure according to claim 1, wherein the biasing unit biases the second member to the first member by an elastic member.

前記構造物は、平面視した際に長辺と短辺を有する矩形状であり、
前記付勢手段は、長辺方向に沿い、且つ、短辺方向の外側位置となるように複数配されることを特徴とする請求項１又は２に記載の構造物の免震構造。 The structure is a rectangular shape having a long side and a short side when viewed in plan,
The seismic isolation structure for a structure according to claim 1 or 2, wherein a plurality of the urging means are arranged along the long side direction and at outer positions in the short side direction.