JP2012184545A - Waterproof structure of slip bearing device - Google Patents

Waterproof structure of slip bearing device Download PDF

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JP2012184545A
JP2012184545A JP2011046370A JP2011046370A JP2012184545A JP 2012184545 A JP2012184545 A JP 2012184545A JP 2011046370 A JP2011046370 A JP 2011046370A JP 2011046370 A JP2011046370 A JP 2011046370A JP 2012184545 A JP2012184545 A JP 2012184545A
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sliding
frame
slip
receiving plate
shaped member
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JP5657430B2 (en
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Takashi Kikuchi
隆志 菊地
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Bridgestone Corp
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Bridgestone Corp
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Abstract

PROBLEM TO BE SOLVED: To easily perform inspection work of a slip bearing device while suppressing sticking of water to a slip surface of a slip receiving plate.SOLUTION: A waterproof structure of a slip bearing device includes: a slip receiving plate 10 provided on a building foundation 18 and provided with a slip surface 10A; a slip bearing 12 provided on a lower part of a building 24 and configured so as to slide on the slip surface 10A; and a frame-like member 14 provided on the building foundation 18 so as to surround the outer periphery of the slip receiving plate 10 and configured so as to partially or entirely change the height. The frame-like member 14 is capable of suppressing flooding of the slip receiving plate 10 when rain falls. When performing the inspection work of the slip bearing device 16, the height of the frame-like member 14 is appropriately changed.

Description

本発明は、すべり支承装置の防水構造に関する。   The present invention relates to a waterproof structure for a sliding support device.

建物基礎の台部上に固定されるベース板に、上面がすべり面とされたすべり受け板を配置する一方、建物の下部に固定された上板の下面に、弾性変形可能な積層ゴム体及び該積層ゴム体の下面に固定されたすべり部材からなるすべり支承を、すべり受け板のすべり面に接触させておくことで、建物基礎と建物の下部との水平方向の相対移動が許容されるようにしたすべり支承装置が開示されている（特許文献１及び特許文献２参照）。   On the base plate fixed on the base portion of the building foundation, a slip receiving plate whose upper surface is a slip surface is disposed, and on the lower surface of the upper plate fixed to the lower part of the building, an elastically deformable laminated rubber body and By allowing a sliding bearing made of a sliding member fixed to the lower surface of the laminated rubber body to contact the sliding surface of the sliding receiving plate, relative movement in the horizontal direction between the building foundation and the lower part of the building is allowed. A sliding support device is disclosed (see Patent Document 1 and Patent Document 2).

特開２００５−３３７２８３号公報JP 2005-337283 A 特開２００６−９４９６号公報Japanese Patent Laid-Open No. 2006-9496

上記した従来例のようなすべり支承装置は、建物側に固定されるすべり支承と、建物基礎側に固定されるすべり受け板との間の摩擦により、地震のエネルギーを減衰させる免震装置である。従って、すべり受け板のすべり面に水や異物が付着すると、所定の性能が発揮されない。このため、上記した従来例では、すべり面への水や異物の付着を防止するために、すべり支承やすべり受け板をカバーで覆っている。   The above-described conventional sliding bearing device is a seismic isolation device that attenuates the energy of the earthquake by friction between the sliding bearing fixed to the building side and the sliding support plate fixed to the building foundation side. . Therefore, if water or foreign matter adheres to the sliding surface of the slip receiving plate, the predetermined performance is not exhibited. For this reason, in the above-mentioned conventional example, in order to prevent water and foreign matter from adhering to the sliding surface, the sliding support and the sliding receiving plate are covered with a cover.

しかしながら、すべり支承装置に対しては、施工後の定期点検時に、すべり受け板の状態を確認したり、ゴム積層体の高さを測定したりする必要があり、すべり支承やすべり受け板がカバーで覆われていたのでは、点検作業の妨げとなる。   However, for the sliding support device, it is necessary to check the state of the sliding support plate and to measure the height of the rubber laminate during periodic inspection after construction. If it was covered with, it would hinder the inspection work.

本発明は、上記事実を考慮して、すべり受け板のすべり面に水が付着することを抑制しつつ、すべり支承装置の点検作業を容易に行うことができるようにすることを目的とする。   In view of the above-described facts, an object of the present invention is to make it possible to easily perform an inspection operation of a sliding support device while suppressing water from adhering to the sliding surface of a sliding receiving plate.

請求項１の発明は、建物基礎上に設けられ、すべり面を有するすべり受け板と、建物の下部に設けられ、前記すべり面上を摺動可能に構成されたすべり支承と、前記建物基礎上に、前記すべり受け板の外周を囲むように設けられると共に、高さを少なくとも前記すべり面よりも高く設定可能かつ該高さを部分的又は全体的に変更可能に構成された枠状部材と、を有している。   The invention of claim 1 is provided on a building foundation, having a sliding surface having a sliding surface, a sliding bearing provided at a lower part of the building and configured to be slidable on the sliding surface, and on the building foundation. And a frame-shaped member that is provided so as to surround the outer periphery of the slide receiving plate, and is configured such that the height can be set higher than at least the sliding surface, and the height can be changed partially or entirely, have.

請求項１に記載のすべり支承装置の防水構造では、すべり受け板の外周が枠状部材により囲まれ、該枠状部材の高さを少なくともすべり受け板のすべり面よりも高く設定可能であるので、降水時にすべり受け板が浸水することを抑制し、該すべり受け板のすべり面への水や異物の付着を抑制することができる。また枠状部材の高さは、部分的又は全体的に変更可能となっているので、すべり支承装置の点検作業時には、枠状部材の高さを適宜変更することで、当該点検作業を容易に行うことができる。   In the waterproof structure of the sliding support device according to claim 1, the outer periphery of the slip receiving plate is surrounded by the frame-shaped member, and the height of the frame-shaped member can be set higher than at least the sliding surface of the slip receiving plate. In addition, it is possible to suppress the slip receiving plate from being submerged during precipitation, and to prevent water and foreign matter from adhering to the slip surface of the slip receiving plate. In addition, since the height of the frame-shaped member can be partially or wholly changed, the inspection work can be easily performed by appropriately changing the height of the frame-shaped member when inspecting the sliding support device. It can be carried out.

請求項２の発明は、請求項１に記載のすべり支承装置の防水構造において、前記枠状部材は、内圧が付与される中空の弾性体で構成されている。   According to a second aspect of the present invention, in the waterproof structure of the sliding support device according to the first aspect, the frame-shaped member is formed of a hollow elastic body to which an internal pressure is applied.

請求項２に記載のすべり支承装置の防水構造では、中空の弾性体に付与する内圧を高めることで枠状部材の高さを増加させることができ、該内圧を低めることで枠状部材の高さを減少させることができる。また中空の弾性体は、内圧を維持したまま部分的に変形可能であるので、枠状部材の高さを部分的に変更することができる。このため、すべり支承装置の点検作業時に枠状部材の高さを容易に変更することができる。   In the waterproof structure of the sliding support device according to claim 2, the height of the frame-shaped member can be increased by increasing the internal pressure applied to the hollow elastic body, and the height of the frame-shaped member can be increased by decreasing the internal pressure. Can be reduced. Moreover, since the hollow elastic body can be partially deformed while maintaining the internal pressure, the height of the frame-shaped member can be partially changed. For this reason, the height of a frame-shaped member can be easily changed at the time of inspection work of a sliding support device.

以上説明したように、本発明に係る請求項１に記載のすべり支承装置の防水構造によれば、すべり受け板のすべり面に水が付着することを抑制しつつ、すべり支承装置の点検作業を容易に行うことができる、という優れた効果が得られる。   As described above, according to the waterproof structure of the sliding support device according to claim 1 of the present invention, the inspection work of the sliding support device can be performed while suppressing water from adhering to the sliding surface of the sliding support plate. An excellent effect that it can be easily performed is obtained.

請求項２に記載のすべり支承装置の防水構造によれば、すべり支承装置の点検作業時に枠状部材の高さを容易に変更することができる、という優れた効果が得られる。   According to the waterproof structure of the sliding support device according to the second aspect, an excellent effect is obtained that the height of the frame-shaped member can be easily changed during the inspection work of the sliding support device.

すべり支承装置の防水構造において、起立した枠状部材により浸水を抑制している状態を示す断面図である。It is sectional drawing which shows the state which is suppressing the water immersion by the standing frame-shaped member in the waterproof structure of a sliding support apparatus. すべり支承装置の防水構造において、枠状部材が起立した状態を示す斜視図である。It is a perspective view which shows the state which the frame-shaped member stood up in the waterproof structure of a sliding support apparatus. すべり支承装置の防水構造において、枠状部材の高さが減少した状態を示す断面図である。It is sectional drawing which shows the state which the height of the frame-shaped member reduced in the waterproof structure of a sliding support apparatus. すべり支承装置の防水構造において、枠状部材の高さが減少した状態を示す斜視図である。It is a perspective view which shows the state which the height of the frame-shaped member reduced in the waterproof structure of a sliding support apparatus.

以下、本発明を実施するための形態を図面に基づき説明する。図１において、本実施形態に係るすべり支承装置の防水構造Ｓは、すべり受け板１０と、すべり支承１２と、枠状部材１４とを有している。これらのうち、すべり受け板１０及びすべり支承１２は、支承装置１６を構成している。   Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In FIG. 1, the waterproof structure S of the sliding support device according to the present embodiment includes a sliding receiving plate 10, a sliding support 12, and a frame-shaped member 14. Among these, the slide receiving plate 10 and the slide support 12 constitute a support device 16.

図１，図２に示されるように、すべり受け板１０は、建物基礎１８上に設けられ、すべり面１０Ａを有している。具体的には、建物基礎１８上には台座部２０が設けられ、該台座部２０上にベース板２２が固定されている。すべり受け板１０は、該ベース板２２上に、すべり面１０Ａが上面側となるように固定されている。台座部２０、ベース板２２及びすべり受け板１０は、平面視で夫々例えば略四角形に形成されている。すべり面１０Ａは、すべり受け板１０の中央部に、例えば略円形に形成されている。   As shown in FIGS. 1 and 2, the slide receiving plate 10 is provided on a building foundation 18 and has a sliding surface 10 </ b> A. Specifically, a pedestal portion 20 is provided on the building foundation 18, and a base plate 22 is fixed on the pedestal portion 20. The slip receiving plate 10 is fixed on the base plate 22 so that the slip surface 10A is on the upper surface side. The pedestal 20, the base plate 22, and the slide receiving plate 10 are each formed, for example, in a substantially rectangular shape in plan view. The sliding surface 10 </ b> A is formed, for example, in a substantially circular shape at the center of the sliding receiving plate 10.

すべり支承１２は、建物２４の下部に設けられ、すべり面１０Ａ上を摺動可能に構成されている。建物２４の下部には取付け凸部２６が設けられており、該取付け凸部２６の下面に上板２８が固定されている。すべり支承１２は、該上板２８の下面に固定されている。すべり支承１２の下面にはすべり板３０が固定されている。このすべり板３０は、すべり受け板１０のすべり面１０Ａに接触している。なお、上板２８とすべり面１０Ａとの摩擦が小さくなるようにするために、該上板２８の下面に対して、例えばフッ素樹脂加工等の処理を施すことが望ましい。   The sliding bearing 12 is provided in the lower part of the building 24, and is configured to be slidable on the sliding surface 10A. A mounting convex portion 26 is provided at the lower part of the building 24, and an upper plate 28 is fixed to the lower surface of the mounting convex portion 26. The sliding bearing 12 is fixed to the lower surface of the upper plate 28. A sliding plate 30 is fixed to the lower surface of the sliding support 12. The sliding plate 30 is in contact with the sliding surface 10 </ b> A of the sliding receiving plate 10. In order to reduce the friction between the upper plate 28 and the sliding surface 10A, it is desirable that the lower surface of the upper plate 28 be subjected to a treatment such as fluororesin processing.

すべり受け板１０の大きさ及びすべり面１０Ａの範囲は、地震発生時におけるすべり支承１２の相対移動量を考慮して設定される。これに伴い、すべり面１０Ａは、上板２８よりも平面視にて大きく形成されており、すべり支承１２がすべるための十分な面積が確保されている。   The size of the slide receiving plate 10 and the range of the slide surface 10A are set in consideration of the relative movement amount of the slide support 12 when an earthquake occurs. Accordingly, the sliding surface 10A is formed larger than the upper plate 28 in a plan view, and a sufficient area for the sliding bearing 12 to slide is ensured.

図示は省略するが、すべり支承１２は、厚み方向に所定の間隙をあけて積層された複数の内部鋼鈑と、これらの間に配置されたゴム板と、該内部鋼板及びゴム板の周囲を覆って保護する被覆ゴムとで、柱状に構成されている。なお、すべり支承１２の構造はこれに限られるものではなく、例えば内部鋼板を有しない構造であってもよい。   Although not shown in the drawings, the sliding support 12 includes a plurality of internal steel plates stacked with a predetermined gap in the thickness direction, a rubber plate disposed therebetween, and the periphery of the internal steel plate and the rubber plate. It is configured in a columnar shape with covering rubber that covers and protects. In addition, the structure of the sliding bearing 12 is not restricted to this, For example, the structure which does not have an internal steel plate may be sufficient.

枠状部材１４は、建物基礎１８上に、すべり受け板１０の外周を囲むように設けられると共に、高さを少なくとも前記すべり面よりも高く設定可能かつ該高さを部分的又は全体的に変更可能に構成されている。具体的には、枠状部材１４は、例えば台座部２０上に、すべり受け板１０及びベース板２２の四方を囲むように固定されている。枠状部材１４の外側から内側への水の浸入を防ぐために、枠状部材１４は、例えば全周に渡って台座部２０上に密着している。   The frame-like member 14 is provided on the building foundation 18 so as to surround the outer periphery of the slide receiving plate 10, and the height can be set higher than at least the sliding surface, and the height is partially or entirely changed. It is configured to be possible. Specifically, the frame-like member 14 is fixed, for example, on the pedestal portion 20 so as to surround the four sides of the slide receiving plate 10 and the base plate 22. In order to prevent intrusion of water from the outside to the inside of the frame-shaped member 14, the frame-shaped member 14 is in close contact with the pedestal portion 20 over the entire circumference, for example.

枠状部材１４は、内圧が付与される中空の弾性体、例えば断面略四角形の環状のゴムチューブで構成されている。この枠状部材１４に内圧を付与するためには、空気等の流体を封入してもよいし、また枠状部材１４に流体の出入り口、例えばバルブ（図示せず）を設けて、該バルブを介して空気等の流体を供給するようにしてもよい。枠状部材１４に流体の出入り口を設けた場合には、出入り口から流体を抜くことで枠状部材１４の内圧を減少させることも可能となる。   The frame-like member 14 is configured by a hollow elastic body to which an internal pressure is applied, for example, an annular rubber tube having a substantially square cross section. In order to apply an internal pressure to the frame-shaped member 14, a fluid such as air may be sealed, or a fluid inlet / outlet, for example, a valve (not shown) is provided in the frame-shaped member 14, and the valve is Alternatively, a fluid such as air may be supplied. When the fluid inlet / outlet is provided in the frame-shaped member 14, the internal pressure of the frame-shaped member 14 can be reduced by removing the fluid from the gateway.

図１，図２に示されるように、枠状部材１４は、通常時には、すべり受け板１０のすべり面１０Ａよりも高い位置まで起立している。枠状部材１４が中空の弾性体であって伸縮性を有する場合、付与する内圧によって枠状部材１４の高さを調節可能である。枠状部材１４が弾性体でなく伸張性を有しない場合には、該枠状部材１４を構成する基材の大きさ（膨張時の断面形状）で高さが定まる。   As shown in FIGS. 1 and 2, the frame-like member 14 stands up to a position higher than the sliding surface 10 </ b> A of the sliding receiving plate 10 in a normal state. When the frame-shaped member 14 is a hollow elastic body and has elasticity, the height of the frame-shaped member 14 can be adjusted by the applied internal pressure. When the frame-shaped member 14 is not an elastic body and does not have stretchability, the height is determined by the size of the base material constituting the frame-shaped member 14 (cross-sectional shape when expanded).

なお、建物２４としては、本実施形態のすべり支承装置１６を介して支持される構造物であればよく、例えば、オフィスビル、病院、集合住宅、美術館、公会堂、学校、庁舎、神社仏閣、橋梁、競技場、照明灯等を挙げることができる。また、建物基礎１８としては、本実施形態のすべり支承装置１６を介して上記の建物２４を支持するものであればよく、建物の土台、地盤等、及びこれらの上に設けられる各種部材をも含む。   The building 24 may be a structure that is supported via the sliding support device 16 of the present embodiment. For example, an office building, a hospital, an apartment house, a museum, a public hall, a school, a government building, a shrine, a temple, a bridge , Stadiums, lighting, etc. The building foundation 18 may be anything that supports the building 24 via the sliding support device 16 of the present embodiment. The building foundation 18, the ground, etc., and various members provided on these may also be used. Including.

（作用）
本実施形態は、上記のように構成されており、以下その作用について説明する。図１において、本実施形態に係るすべり支承装置１６では、すべり板３０とすべり支承１２とのすべりによって、建物基礎１８と建物２４との水平方向（矢印Ａ方向）の相対移動が許容されている。地震発生時には、建物２４の水平運動に伴うすべり支承１２とすべり受け板１０との間の摩擦と、該すべり支承１２のせん断変形とにより、地震のエネルギーを減衰させることができる。 (Function)
This embodiment is configured as described above, and the operation thereof will be described below. In FIG. 1, in the sliding bearing device 16 according to the present embodiment, relative movement in the horizontal direction (arrow A direction) between the building foundation 18 and the building 24 is allowed by sliding between the sliding plate 30 and the sliding bearing 12. . When an earthquake occurs, the energy of the earthquake can be attenuated by the friction between the sliding bearing 12 and the sliding receiving plate 10 accompanying the horizontal movement of the building 24 and the shear deformation of the sliding bearing 12.

また本実施形態に係るすべり支承装置の防水構造Ｓでは、すべり受け板１０の外周が、枠状部材１４により囲まれているので、図１に示されるように、降水時に枠状部材１４の周囲に水３２がたまっても、該枠状部材１４が堰となり、すべり受け板１０が浸水することが抑制される。このため、すべり受け板１０のすべり面１０Ａへの水や異物の付着を抑制することができる。   Further, in the waterproof structure S of the sliding support device according to the present embodiment, since the outer periphery of the sliding receiving plate 10 is surrounded by the frame-shaped member 14, as shown in FIG. Even if the water 32 accumulates, the frame-shaped member 14 becomes a weir, and the slip receiving plate 10 is suppressed from being submerged. For this reason, it is possible to suppress adhesion of water and foreign matter to the sliding surface 10A of the sliding receiving plate 10.

次に、すべり支承装置１６の点検作業時には、枠状部材１４に作業者（図示せず）の体重が作用することで、図２の二点鎖線で示されるように、該枠状部材１４の内圧を維持したまま、該枠状部材１４を部分的に変形させ、局所的に高さが低い凹部１４Ａを形成することができる。また枠状部材１４に流体の出入り口（図示せず）を設けた場合には、図３，図４に示されるように、枠状部材１４の内圧を低めることで、枠状部材１４の高さを全体的に減少させることが可能である。   Next, when the sliding support device 16 is inspected, the weight of the operator (not shown) acts on the frame-shaped member 14, so that the frame-shaped member 14 can be moved as shown by a two-dot chain line in FIG. 2. While maintaining the internal pressure, the frame-shaped member 14 can be partially deformed to form the recess 14A having a locally low height. Further, when a fluid inlet / outlet (not shown) is provided in the frame-shaped member 14, the height of the frame-shaped member 14 is reduced by reducing the internal pressure of the frame-shaped member 14, as shown in FIGS. Can be reduced overall.

このように、本実施形態に係るすべり支承装置の防水構造Ｓでは、枠状部材１４の高さを容易に変更することができるので、通常時にすべり受け板１０のすべり面１０Ａに水が付着することを抑制しつつ、すべり受け板１０の状態の確認やすべり支承１２の高さの測定といった、すべり支承装置１６の点検作業を容易に行うことができる。またこれによって、すべり支承装置１６の免震性能を長期にわたって維持することができる。   Thus, in the waterproof structure S of the sliding support device according to the present embodiment, the height of the frame-like member 14 can be easily changed, so that water adheres to the sliding surface 10A of the sliding receiving plate 10 at the normal time. While suppressing this, it is possible to easily perform the inspection work of the sliding support device 16 such as confirmation of the state of the sliding support plate 10 and measurement of the height of the sliding support 12. This also allows the seismic isolation performance of the sliding support device 16 to be maintained over a long period.

（他の実施形態）
枠状部材１４を、断面略四角形のゴムチューブとしたが、断面形状はその他の多角形や円形、半円形等であってもよく、またゴムと比較して伸張性の少ない材質で構成されたチューブであってもよい。また枠状部材１４を環状のものとしたが、該枠状部材１４の内部を複数のチャンバに区画し、各々のチャンバに内圧を付与しておくと、仮に一部のチャンバの内圧が減少した場合でも、他のチャンバの内圧によって枠状部材１４の高さの減少を抑制することができる。 (Other embodiments)
The frame-shaped member 14 is a rubber tube having a substantially rectangular cross section, but the cross-sectional shape may be other polygonal, circular, semi-circular, etc., and is made of a material having less stretchability than rubber. It may be a tube. Although the frame-shaped member 14 has an annular shape, if the inside of the frame-shaped member 14 is partitioned into a plurality of chambers and internal pressure is applied to each chamber, the internal pressure of some chambers temporarily decreases. Even in this case, the decrease in the height of the frame-like member 14 can be suppressed by the internal pressure of the other chamber.

更に枠状部材１４を、内圧が付与される中空の弾性体で構成されるものとしたが、これに限られず、すべり受け板１０の浸水を抑制することができ、かつ高さを部分的又は全体的に変更可能なものであれば、どのような部材であってもよい。   Further, the frame-like member 14 is constituted by a hollow elastic body to which an internal pressure is applied, but is not limited to this, and can prevent the slip receiving plate 10 from being flooded, and the height can be partially or Any member may be used as long as it can be changed as a whole.

１０ すべり受け板
１０Ａ すべり面
１２ すべり支承
１４ 枠状部材
１８ 建物基礎
２４ 建物
Ｓ すべり支承装置の防水構造 DESCRIPTION OF SYMBOLS 10 Sliding receiving plate 10A Sliding surface 12 Sliding bearing 14 Frame-shaped member 18 Building foundation 24 Building S Waterproof structure of sliding bearing device

Claims (2)

建物基礎上に設けられ、すべり面を有するすべり受け板と、
建物の下部に設けられ、前記すべり面上を摺動可能に構成されたすべり支承と、
前記建物基礎上に、前記すべり受け板の外周を囲むように設けられると共に、高さを少なくとも前記すべり面よりも高く設定可能かつ該高さを部分的又は全体的に変更可能に構成された枠状部材と、
を有するすべり支承装置の防水構造。 A slip receiving plate provided on the building foundation and having a slip surface;
A sliding bearing provided at the bottom of the building and configured to be slidable on the sliding surface;
A frame that is provided on the building foundation so as to surround the outer periphery of the slide receiving plate, the height of which can be set higher than at least the sliding surface, and the height can be changed partially or entirely. A member,
Waterproof structure of sliding bearing device having 前記枠状部材は、内圧が付与される中空の弾性体で構成されている請求項１に記載のすべり支承装置の防水構造。   The sliding structure according to claim 1, wherein the frame-shaped member is formed of a hollow elastic body to which an internal pressure is applied.
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