JP2008156985A - Base-isolating device and base-isolated house equipped therewith - Google Patents
Base-isolating device and base-isolated house equipped therewith Download PDFInfo
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Abstract
Description
本発明は、受け部と、該受け部上を滑動する動部とを有する免震装置及びそれを備えて下部構造体を鉄筋コンクリート造とし、上部構造体を建物とし、前記下部構造体に免震装置の受け部を固定すると共に、前記上部構造体に前記免震装置の動部を固定した免震住宅に関するものである。 The present invention provides a seismic isolation device having a receiving part and a moving part that slides on the receiving part, and the lower structure is made of reinforced concrete, the upper structure is a building, and the lower structure is seismically isolated. The present invention relates to a base-isolated house in which a receiving portion of the device is fixed and a moving portion of the base isolation device is fixed to the upper structure.
免震構造は免震装置がある層の相関変位を大きくすることで、地震の揺れを建物に伝え難くする構造である。ビル等の免震構造は敷地の制約が小さいため大きいレベルの地震を想定しても免震層の変形を大きくすることで設計が可能である。一方、住宅の場合は敷地の制約条件から変形制限がビルに比べて厳しいことが多い。また、建物が軽いことから暴風時による移動が生じる可能性がある。そのため住宅の場合、変形制限装置の設置は必要となる。そこで衝撃の極力少ない変形制限装置が必要となってくる。 The seismic isolation structure increases the relative displacement of the layer where the seismic isolation device is located, making it difficult to transmit the shaking of the earthquake to the building. The seismic isolation structure such as a building can be designed by increasing the deformation of the seismic isolation layer even if a large level of earthquake is assumed because the site constraints are small. On the other hand, in the case of a house, deformation restrictions are often stricter than buildings due to site constraints. In addition, because the building is light, there is a possibility of movement due to storms. Therefore, in the case of a house, installation of a deformation limiting device is necessary. Therefore, a deformation limiting device with as little impact as possible is required.
例えば、特開平11−002046号公報(特許文献1)には、免震構造の浮き上がり防止装置として、上部構造体が下部構造体から浮き上がることを防止して、積層ゴムに引張り力がかからないようにする免震構造の浮き上がり防止装置が提案されている。 For example, in Japanese Patent Laid-Open No. 11-002046 (Patent Document 1), as an anti-lifting device for a seismic isolation structure, the upper structure is prevented from being lifted from the lower structure so that a tensile force is not applied to the laminated rubber. An anti-lifting device with a seismic isolation structure has been proposed.
しかしながら、前述の特許文献1の技術では、積層ゴムに引き抜きが発生しない付属装置であるため免震装置の設置場所とは別の場所に設置が必要となり敷地の制約が小さいビル等では支障がないが、敷地の制約条件が厳しい都市型住宅の場合は適用が困難となる場合がある。 However, in the technique of the above-mentioned Patent Document 1, since it is an attached device that does not cause the laminated rubber to be pulled out, it is necessary to install it in a place different from the place where the seismic isolation device is installed, and there is no problem in a building or the like with small site restrictions. However, it may be difficult to apply in the case of urban housing with severe site constraints.
また、住宅において、変形制限装置を免震装置とは別に設置しようとすると床下の設置スペースが限定されるため、コンパクトにする必要があり、変形制限装置に動部が衝突した場合の衝撃も極力小さく抑えた上で、浮上りを防止する必要がある。 In addition, if the deformation limiting device is installed separately from the seismic isolation device in a house, the installation space under the floor is limited, so it is necessary to make it compact, and the impact when a moving part collides with the deformation limiting device is as much as possible. It is necessary to prevent the lift while keeping it small.
本発明は前記課題を解決するものであり、その目的とするところは、敷地の制約条件が厳しい都市型住宅の場合であっても過大変形時の衝撃を小さくするとともに、上部構造が下部構造から浮き上がることを防止する機能の適用が容易な免震装置及びそれを備えた免震住宅を提供せんとするものである。 The present invention solves the above-mentioned problems, and the object of the present invention is to reduce the impact at the time of excessive deformation even in the case of urban housing with severe site constraints, and the upper structure from the lower structure. The purpose of the present invention is to provide a seismic isolation device that can easily be applied with the function of preventing it from floating and a seismic isolation housing equipped with the same.
前記目的を達成するための本発明に係る免震装置は、受け部と、該受け部上を滑動する動部とを有する免震装置において、前記動部の水平周囲に環状の突部を設け、前記受け部の外周に立ち上がり壁を設け、前記動部の突部に対応する前記立ち上がり壁に緩衝材を設け、前記動部が前記受け部上を水平移動して前記動部の突部が前記緩衝材に接したのち該緩衝材を凹ませた時、前記環状の突部を係止して前記動部が上方に浮き上がることを阻止する水平突出部を前記立ち上がり壁に設けたことを特徴とする。 To achieve the above object, a seismic isolation device according to the present invention includes a receiving part and a moving part that slides on the receiving part, and an annular protrusion is provided around the horizontal part of the moving part. A rising wall is provided on the outer periphery of the receiving portion, a cushioning material is provided on the rising wall corresponding to the protruding portion of the moving portion, and the moving portion horizontally moves on the receiving portion so that the protruding portion of the moving portion is The rising wall is provided with a horizontal protruding portion that locks the annular protrusion and prevents the moving portion from floating upward when the cushioning material is recessed after contacting the cushioning material. And
また、本発明に係る免震住宅は、前記免震装置が、鉄筋コンクリート造からなる下部構造体と、建物である上部構造体との間に設けられ、前記下部構造体に前記免震装置の受け部を固定すると共に、前記上部構造体に前記免震装置の動部を固定したことを特徴とする。 Further, the seismic isolation house according to the present invention is such that the seismic isolation device is provided between a lower structure made of reinforced concrete and an upper structure that is a building, and the lower structure receives the seismic isolation device. And a moving part of the seismic isolation device is fixed to the upper structure.
本発明に係る免震装置によれば、免震装置の受け部の外周に立ち上がり壁を設け、該免震装置の動部の突部に対応する該立ち上がり壁に緩衝材を設け、動部の水平周囲に設けた環状の突部を係止して該動部が上方に浮き上がることを阻止する水平突出部を該立ち上がり壁に備えているため、水平方向の震動により動部の水平周囲に設けた環状の突部が緩衝材に当り、衝突時の衝撃を緩和させ、その後、動部が上方に浮き上がろうとした場合に動部の水平周囲に設けた環状の突部が立ち上がり壁の水平突出部に衝突して係止され過大変形時の衝撃が緩和され、浮き上がりの抑制にもつながる。 According to the seismic isolation device of the present invention, a rising wall is provided on the outer periphery of the receiving portion of the seismic isolation device, a buffer material is provided on the rising wall corresponding to the protrusion of the moving portion of the seismic isolation device, Since the rising wall is provided with a horizontal protrusion that locks the ring-shaped protrusion provided around the horizontal and prevents the moving part from floating upward, it is provided around the horizontal of the moving part by horizontal vibration. The ring-shaped protrusion provided around the horizontal part of the moving part rises to the horizontal of the rising wall when the ring-shaped protruding part hits the cushioning material and alleviates the impact at the time of the collision. It collides with the protrusion and is locked, and the impact at the time of excessive deformation is mitigated, leading to suppression of lifting.
立ち上がり壁に設ける緩衝材としては、発砲スチロール製の捨て型枠とすることで施工が容易に出来る。 As the cushioning material provided on the rising wall, construction can be facilitated by using a foamed styrene foam frame.
また、本発明に係る免震住宅によれば、上記免震装置を、鉄筋コンクリート造からなる下部構造体と、建物である上部構造体との間に設け、前記下部構造体に前記免震装置の受け部を固定すると共に、前記上部構造体に前記免震装置の動部を固定したことにより、敷地の制約条件が厳しい都市型住宅の場合であっても鉄骨建物からなる上部構造が鉄筋コンクリート造からなる下部構造から浮き上がることを防止する機能の適用が容易な免震装置を備えた免震住宅を提供することが出来る。 Moreover, according to the seismic isolation house according to the present invention, the seismic isolation device is provided between a lower structure made of reinforced concrete and an upper structure that is a building, and the seismic isolation device is installed in the lower structure. While fixing the receiving part and fixing the moving part of the seismic isolation device to the upper structure, the upper structure made of steel building is made of reinforced concrete even in the case of urban housing with severe site constraints It is possible to provide a seismic isolation house equipped with a seismic isolation device that can be easily applied with the function of preventing the substructure from being lifted.
鉄筋コンクリート造からなる下部構造体と鉄骨建物からなる上部構造体との間に免震装置が設けられた住宅において、鉄筋コンクリート造からなる下部構造体が住宅の1階、建物である上部構造体が2階以上にした場合、(1)狭小敷地のとき大地震等に起因して上部構造体は敷地に対して大きく水平移動するが下部構造体は敷地に対して移動しないので、下部構造体と例えば塀など外部設置物と距離が変わることがなく、人が挟まれることがない、(2)1階を鉄筋コンクリートにすることで、免震の必要のない例えばピロティにし車庫や物置などに自由に使えるようにできる。即ち、本当に免震の必要な居住空間である2階以上のみを免震住宅とすることができる。このような構造の住宅は集合住宅として使用するのに適する等の効果がある。 In a house in which a seismic isolation device is provided between a lower structure made of reinforced concrete and an upper structure made of steel frame, the lower structure made of reinforced concrete is the first floor of the house, and the upper structure that is a building is 2 When the floor is higher than the floor, (1) When the site is small, the upper structure moves horizontally relative to the site due to a large earthquake, but the lower structure does not move relative to the site. There is no change in distance from external installations such as fences, and people are not caught. (2) By using reinforced concrete on the first floor, there is no need for seismic isolation, for example, it can be freely used for garages and storages. You can That is, only the second floor or higher, which is a living space that really requires seismic isolation, can be made a seismic isolation house. The housing having such a structure is advantageous in that it is suitable for use as a collective housing.
図により本発明に係る免震装置及びそれを備えた免震住宅の一実施形態を具体的に説明する。図1は本発明に係る免震装置及びそれを備えた免震住宅の構成を示す平面図及び断面説明図、図2は鉄骨建物からなる上部と、鉄筋コンクリート造からなる下部と、その間に設けられた免震装置とを示す分解斜視図、図3は本発明に係る免震装置の作用を説明する断面説明図である。 An embodiment of a seismic isolation device according to the present invention and an embodiment of a seismic isolation house including the same will be described specifically with reference to the drawings. FIG. 1 is a plan view and a cross-sectional explanatory view showing the structure of a seismic isolation device according to the present invention and a seismic isolation house equipped with the same, and FIG. 2 is provided between an upper part composed of a steel building and a lower part composed of a reinforced concrete structure. FIG. 3 is an explanatory cross-sectional view for explaining the operation of the seismic isolation device according to the present invention.
図1及び図2において、1は鉄筋コンクリート造からなる住宅建物の下部構造体であり、2は鉄骨建物からなる住宅建物の上部構造体である。鉄筋コンクリート造からなる下部構造体1と、鉄骨建物からなる上部構造体2との間には本発明に係る免震装置3が設けられて免震住宅が構成されている。
1 and 2, 1 is a lower structure of a residential building made of reinforced concrete, and 2 is an upper structure of a residential building made of a steel frame building. A
鉄筋コンクリート造の下部構造体1には、免震装置3の受け部3aが固定されている。受け部3aは表面が平滑で滑り性能を有する鋼板等が適用可能である。また、鉄骨建物からなる上部構造体2の柱(或いは間柱)2aの下端部には免震装置3の動部3bが固定されている。
The receiving part 3a of the
動部3bの水平周囲には環状の突部3cが設けられている。突部3cは動部3bの外周面よりも外側に突出した構成であれば良く、動部3bの支持軸3dの外周にリング状の部材を取り付けたものや、動部3bの支持軸3dの下面に円板状のフランジ部材を取り付けたものを採用することが出来る。
An
免震装置3の受け部3aの外周には立ち上がり壁3eが設けられており、免震装置3の動部3bの突部3cに対応する立ち上がり壁3eに緩衝材3fが設けられている。本実施形態の立ち上がり壁3eは図2に示すように、受け部3aの外周に円形状に設けられており、その内周面側にリング状の緩衝材3fが設けられている。緩衝材3fの上部には水平突出部3gが設けられている。本実施形態の緩衝材3fは、水平突出部3gを成形する際の発砲スチロール製の捨て型枠により構成されている。
A rising
このような構成において、水平方向の震動が発生したとき、図3(a)に示すように、免震装置3の動部3bが受け部3a上を水平移動して該動部3bの突部3cが緩衝材3fに接したのち(図3(b)参照)、該緩衝材3fを凹ませた時(図3(c)参照)、立ち上がり壁3eに設けた水平突出部3gにより環状の突部3cを係止して該動部3bが上方に浮き上がることを阻止することが出来る。
In such a configuration, when a horizontal vibration occurs, as shown in FIG. 3A, the moving
即ち、下部に設けた免震装置3の受け部3aの外周に立ち上がり壁3eを設け、上部に設けた免震装置3の動部3bの突部3cに対応する該立ち上がり壁3eに緩衝材3fを設け、該動部3bの水平周囲に設けた環状の突部3cを係止して該動部3bが上方に浮き上がることを阻止する水平突出部3gを該立ち上がり壁3eに備えているため、水平方向の震動により動部3bの水平周囲に設けた環状の突部3cが緩衝材3fに当り、衝突時の衝撃を緩和させ、その後、動部3bが上方に浮き上がろうとした場合に該動部3bの水平周囲に設けた環状の突部3cが立ち上がり壁3eの水平突出部3gに衝突して係止され、過大変形時の衝撃が緩和され、浮き上がりの抑制が出来る。
That is, the rising
立ち上がり壁3eに設ける緩衝材3fとして、発砲スチロール製の捨て型枠とすることで施工が容易に出来る。
The
また、上記免震装置3を、鉄筋コンクリート造からなる下部構造体1と、鉄骨建物からなる上部構造体2との間に設けることにより、敷地の制約条件が厳しい都市型住宅の場合であっても鉄骨建物からなる上部構造体2が鉄筋コンクリート造からなる下部構造体1から浮き上がることを防止する機能の適用が容易な免震装置3を備えた免震住宅を提供することが出来る。
Moreover, even if it is a case of a city-type house where the site restrictions are severe, by providing the
本発明の活用例として、下部を鉄筋コンクリート造とし、上部を鉄骨建物とし、前記下部に免震装置の受け部を固定すると共に、前記上部に前記免震装置の動部を固定した免震装置及びそれを備えた免震住宅に適用することが出来る。 As a utilization example of the present invention, the lower part is a reinforced concrete structure, the upper part is a steel building, the receiving part of the seismic isolation device is fixed to the lower part, and the moving part of the seismic isolation device is fixed to the upper part, and It can be applied to seismically isolated houses equipped with it.
1…下部構造体
2…上部構造体
2a…柱(或いは間柱)
3…免震装置
3a…受け部
3b…動部
3c…突部
3d…支持軸
3e…立ち上がり壁
3f…緩衝材
3g…水平突出部
DESCRIPTION OF SYMBOLS 1 ...
3 ... Seismic isolation device 3a ... receiving
Claims (2)
前記動部の水平周囲に環状の突部を設け、前記受け部の外周に立ち上がり壁を設け、前記動部の突部に対応する前記立ち上がり壁に緩衝材を設け、前記動部が前記受け部上を水平移動して前記動部の突部が前記緩衝材に接したのち該緩衝材を凹ませた時、前記環状の突部を係止して前記動部が上方に浮き上がることを阻止する水平突出部を前記立ち上がり壁に設けたことを特徴とする免震装置。 In a seismic isolation device comprising a receiving part and a moving part that slides on the receiving part,
An annular protrusion is provided around the horizontal part of the moving part, a rising wall is provided on the outer periphery of the receiving part, a buffer material is provided on the rising wall corresponding to the protruding part of the moving part, and the moving part is the receiving part When the projection of the moving part comes into contact with the cushioning material and then the cushioning material is recessed after the horizontal movement, the annular projection is locked to prevent the moving part from floating upward. A seismic isolation device, wherein a horizontal protrusion is provided on the rising wall.
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JP5084251B2 JP5084251B2 (en) | 2012-11-28 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010112550A (en) * | 2008-10-10 | 2010-05-20 | Teiji Kojima | Support device for base isolation device, and base isolation device with the same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11153192A (en) * | 1997-11-25 | 1999-06-08 | Shimizu Corp | Base isolation mechanism |
JP2003056202A (en) * | 2001-08-10 | 2003-02-26 | Kawaguchi Metal Industries Co Ltd | Base isolation sliding support |
JP2004285590A (en) * | 2003-03-19 | 2004-10-14 | Sumitomo Rubber Ind Ltd | Floating preventing device and anchor structure of structure |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11153192A (en) * | 1997-11-25 | 1999-06-08 | Shimizu Corp | Base isolation mechanism |
JP2003056202A (en) * | 2001-08-10 | 2003-02-26 | Kawaguchi Metal Industries Co Ltd | Base isolation sliding support |
JP2004285590A (en) * | 2003-03-19 | 2004-10-14 | Sumitomo Rubber Ind Ltd | Floating preventing device and anchor structure of structure |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010112550A (en) * | 2008-10-10 | 2010-05-20 | Teiji Kojima | Support device for base isolation device, and base isolation device with the same |
JP4688087B2 (en) * | 2008-10-10 | 2011-05-25 | 帝二 児島 | Seismic isolation device support device and seismic isolation device with support device |
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