JPH11351319A - Base isolation support - Google Patents
Base isolation supportInfo
- Publication number
- JPH11351319A JPH11351319A JP16352298A JP16352298A JPH11351319A JP H11351319 A JPH11351319 A JP H11351319A JP 16352298 A JP16352298 A JP 16352298A JP 16352298 A JP16352298 A JP 16352298A JP H11351319 A JPH11351319 A JP H11351319A
- Authority
- JP
- Japan
- Prior art keywords
- curved surface
- steel plates
- steel plate
- seismic isolation
- concave curved
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、荷重支持機能と
復元力機能を同時に有し、全水平方向に任意に移動自在
な免震支承の技術分野に属し、更に云えば、水平２方向
に対して独立に復元力の大きさを決定することが可能な
免震支承に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a seismic isolation bearing which has both a load supporting function and a restoring force function and is freely movable in all horizontal directions. And seismic isolation bearings that can independently determine the magnitude of restoring force.
【０００２】[0002]
【従来の技術】従来、免震構造物の免震層を構成する免
震支承には、例えば特公平５−１４０６２号公報の第２
図に開示されているように、凹曲面を有する鋼板を上下
に対向させ、両者の間に１個の比較的大きなベアリング
ボールを介在させて荷重支持機能と復元力機能を同時に
発揮させる免震支承が公知である。しかしながら、重量
の大きな免震構造物を支持する場合に、凹曲面に点接触
する１個のベアリングボールでは限界があり、大きな荷
重支持を期待できない。2. Description of the Related Art Conventionally, seismic isolation bearings constituting a seismic isolation layer of a seismic isolation structure are disclosed, for example, in Japanese Patent Publication No. Hei.
As shown in the figure, a seismic isolation bearing in which a steel plate having a concave curved surface is vertically opposed to each other, and one relatively large bearing ball is interposed between the two to simultaneously exert a load supporting function and a restoring force function. Is known. However, when supporting a heavy seismic isolation structure, a single bearing ball that makes point contact with a concave curved surface is limited, and large load support cannot be expected.
【０００３】その解決案として、例えば特開平８−５３
９５３号公報には、前記凹曲面等の所謂転がり面とベア
リングボール等の所謂転動体との接触面積を大きくする
ため、転がり面と転動体との接触を線接触にして大きな
荷重支持を期待できる免震支承が開示されている。As a solution to this problem, for example, Japanese Patent Application Laid-Open No. 8-53
No. 953 discloses that in order to increase the contact area between a so-called rolling surface such as the concave curved surface and a so-called rolling element such as a bearing ball, a large load support can be expected by making the contact between the rolling surface and the rolling element a linear contact. Seismic isolation bearings are disclosed.
【０００４】[0004]
【本発明が解決しようとする課題】しかしながら、上記
した大きな荷重支持を期待できる免震支承は、荷重支持
要素として免震構造に適用することは可能であるが復元
力機能を併せ持たず、別途に復元力要素を必要とするの
で、合理的な免震支承を提供できるとは到底云えず改善
する余地がある。However, the above-mentioned seismic isolation bearing which can be expected to support a large load can be applied to a seismic isolation structure as a load supporting element, but does not have a restoring force function and is separately provided. Since it requires a restoring force element, there is still room for improvement without providing a reasonable seismic isolation bearing.
【０００５】したがって、本発明の目的は、荷重支持機
能と復元力機能を同時に発揮し、全水平方向に任意に移
動自在な免震支承を提供することである。本発明の更な
る目的は、直交する水平２方向に対して独立に復元力の
大きさを決定することが可能な免震支承を提供すること
である。SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a seismic isolation bearing which can simultaneously perform a load supporting function and a restoring force function and can freely move in all horizontal directions. A further object of the present invention is to provide a seismic isolation bearing capable of independently determining the magnitude of the restoring force in two orthogonal horizontal directions.
【０００６】[0006]
【課題を解決するための手段】上述の課題を解決するた
めの手段として、請求項１に記載した発明に係る免震支
承は、片面にＹ方向の凹曲面を有し、同凹曲面を上下対
称に配置され、免震構造物の下底面及び基礎上面等に固
定された２枚の端部鋼板と、前記２枚の端部鋼板の間に
配置され、前記Ｙ方向と直交するＸ方向の凸曲面を上下
面に有する１枚の中央鋼板と、前記端部鋼板と中央鋼板
との間に配置され、前記各端部鋼板の凹曲面と同一の曲
率を有するＹ方向の凸曲面と、前記中央鋼板の凸曲面と
同一の曲率を有するＸ方向の凹曲面を上下面に有し、同
凹曲面を上下対称に配置された２枚の補助鋼板と、前記
各鋼板の凹曲面または凸曲面の方向に沿って設けられた
各溝部と、前記上下に重なり合う各鋼板同士の相対面間
で前記各溝部に挿入して介在させたコロ又はベアリング
ボールと、から成ることを特徴とする。As a means for solving the above-mentioned problems, a seismic isolation bearing according to the first aspect of the present invention has a concave curved surface in the Y direction on one side, and the concave curved surface is vertically moved. Two end steel plates fixed symmetrically and fixed to the lower bottom surface and the foundation upper surface of the seismic isolation structure, and disposed between the two end steel plates in the X direction orthogonal to the Y direction. One central steel plate having a convex curved surface on the upper and lower surfaces, a convex curved surface in the Y direction disposed between the end steel plate and the central steel plate and having the same curvature as the concave curved surface of each end steel plate; The upper and lower surfaces have a concave curved surface in the X direction having the same curvature as the convex curved surface of the central steel plate, and two auxiliary steel plates in which the concave curved surface is vertically symmetrically arranged, and the concave curved surface or the convex curved surface of each of the steel plates. Inserted in each groove between the respective grooves provided along the direction and the relative surfaces of the respective steel plates vertically overlapping each other. Characterized in that it consists of a roller or bearing balls interposed by.
【０００７】請求項２に記載した発明に係る免震支承
は、片面にＹ方向の凸曲面を有し、同凸曲面を上下対称
に配置され、免震構造物の下底面及び基礎上面等に固定
された２枚の端部鋼板と、前記２枚の端部鋼板の間に配
置され、前記Ｙ方向と直交するＸ方向の凹曲面を上下面
に有する１枚の中央鋼板と、前記各端部鋼板と中央鋼板
との間に配置され、前記各端部鋼板の凸曲面と同一の曲
率を有するＹ方向の凹曲面と、前記中央鋼板の凹曲面と
同一の曲率を有するＸ方向の凸曲面を上下面に有し、同
凸曲面を上下対称に配置された２枚の補助鋼板と、前記
各鋼板の凸曲面または凹曲面の方向に沿って設けられた
各溝部と、前記上下に重なり合う各鋼板同士の相対面間
で前記各溝部に挿入して介在させたコロ又はベアリング
ボールと、から成ることを特徴とする。The seismic isolation bearing according to the second aspect of the present invention has a convex curved surface in the Y direction on one surface, and the convex curved surface is arranged symmetrically up and down, and is provided on the lower bottom surface and the foundation upper surface of the seismic isolation structure. Two fixed end steel plates, one central steel plate disposed between the two end steel plates and having upper and lower concave surfaces in the X direction perpendicular to the Y direction, and each end steel plate; A concave curved surface in the Y direction having the same curvature as the convex curved surface of each of the end steel plates, and a convex curved surface in the X direction having the same curvature as the concave curved surface of the central steel plate. The upper and lower surfaces, the two auxiliary steel plates having the same convex curved surface arranged vertically symmetrically, each groove provided along the direction of the convex curved surface or concave curved surface of each of the steel plates, each of the vertically overlapping A roller or a bearing ball inserted and interposed in each of the grooves between the relative surfaces of the steel plates. And wherein the door.
【０００８】請求項３に記載した発明に係る免震支承
は、請求項１又は２に記載した２枚の端部鋼板はそれぞ
れ同形、同大であり、２枚の補助鋼板もそれぞれ同形、
同大であることを特徴とする。According to a third aspect of the present invention, in the seismic isolation bearing, the two end steel plates according to the first and second aspects have the same shape and the same size, and the two auxiliary steel plates also have the same shape.
It is the same size.
【０００９】[0009]
【発明の実施の形態及び実施例】図１は、請求項１に記
載した発明の実施形態である免震支承１を示している。
図２は、前記免震支承１を構成する各鋼板の形状を示し
ている。この免震支承１は、免震構造物６と基礎７との
間（免震層）に設置されている。即ち、片面にＹ方向の
凹曲面２ａを有し同凹曲面２ａを上下対称に配置され免
震構造物６の下底面及び基礎７の上面等にアンカー手段
等により固定された２枚の端部鋼板２，２と（図４Ａ，
Ｂ）、前記２枚の端部鋼板２，２の間に配置され前記Ｙ
方向と直交するＸ方向の凸曲面３ａを上下面に有する１
枚の中央鋼板３と（図４Ａ）、前記端部鋼板２，２と中
央鋼板３との間に配置され、同端部鋼板２の凹曲面２ａ
と同一の曲率を有するＹ方向の凸曲面４ａ、及び同中央
鋼板３の凸曲面３ａと同一の曲率を有するＸ方向の凹曲
面４ｂをそれぞれ上下面に有し同凹曲面４ｂを上下対称
に配置された２枚の補助鋼板４，４と、前記各鋼板２，
３，４の凹曲面２ａ，４ｂまたは凸曲面３ａ，４ａに沿
って設けられ平面的に見てＸ方向とＹ方向に直交する配
置とされた溝部２ｂ，３ｂ，４ｃ，４ｄと（図２）、前
記上下に重なり合うそれぞれの鋼板２と４、及び３と
４，４同士の相対面間で前記溝部２ｂ，３ｂ，４ｃ，４
ｄへ挿入して介在させた複数のコロ５とから成り、各構
成要素は上下にサンドイッチ状に密着した組み合わせで
構成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a seismic isolation bearing 1 according to an embodiment of the present invention.
FIG. 2 shows the shape of each steel plate constituting the seismic isolation bearing 1. The base isolation bearing 1 is installed between the base isolation structure 6 and the foundation 7 (base isolation layer). That is, two end portions having a concave curved surface 2a in the Y direction on one surface, the concave curved surface 2a being arranged vertically symmetrically, and fixed to the lower bottom surface of the base-isolated structure 6, the upper surface of the foundation 7, and the like by an anchor means or the like. Steel plates 2 and 2 (FIG. 4A,
B) The Y is disposed between the two end steel plates 2 and 2.
1 having upper and lower surfaces having a convex curved surface 3a in the X direction perpendicular to the X direction.
The central steel plate 3 (FIG. 4A), the concave curved surface 2 a of the end steel plate 2, which is disposed between the end steel plates 2 and 2 and the central steel plate 3.
A convex curved surface 4a in the Y direction having the same curvature as that of the central steel plate 3 and a concave curved surface 4b in the X direction having the same curvature as the convex curved surface 3a of the central steel plate 3 are respectively provided on the upper and lower surfaces, and the concave curved surfaces 4b are arranged vertically symmetrically. Two auxiliary steel plates 4 and 4,
Grooves 2b, 3b, 4c, and 4d provided along the concave curved surfaces 2a and 4b or the convex curved surfaces 3a and 4a and arranged orthogonal to the X direction and the Y direction when viewed in plan (FIG. 2). The grooves 2b, 3b, 4c, 4 between the relative surfaces of the steel plates 2 and 4, and 3 and 4, 4 which are vertically overlapped with each other.
d, and a plurality of rollers 5 inserted and interposed therebetween, and each component is configured by a combination in which the components are vertically adhered in a sandwich manner.
【００１０】前記端部鋼板２，２はそれぞれ同形、同大
（請求項３）で、平面的に見ると略正方形状とされてい
る（図１、図２）。各端部鋼板２の凹曲面２ａの略中央
部には、同凹曲面２ａに沿ってＹ方向へ十分に長い細長
の溝部２ｂが複数列（本実施例では５列）それぞれ平行
に設けられている。また、前記各端部鋼板２の凹曲面２
ａの表面は、硬度を高めて摩擦係数を低減する表面硬化
処理がなされている。The end steel plates 2 and 2 have the same shape and the same size (claim 3), and have a substantially square shape when viewed in plan (FIGS. 1 and 2). At a substantially central portion of the concave curved surface 2a of each end steel plate 2, a plurality of rows (five rows in this embodiment) of elongated grooves 2b sufficiently long in the Y direction along the concave curved surface 2a are provided. I have. Further, the concave curved surface 2 of each end steel plate 2
The surface a is subjected to a surface hardening treatment for increasing hardness and reducing friction coefficient.
【００１１】前記中央鋼板３は平面的に見ると八角形状
とされ（図２）、その対向する辺同士の間の長さは前記
端部鋼板２の各辺の長さと略同等とされている（図
１）。前記中央鋼板３の各凸曲面３ａの略中央部には、
同凸曲面３ａに沿ってＸ方向へ十分に長い細長の溝部３
ｂが複数列（本実施例では５列）それぞれ平行に設けら
れている。また、前記中央鋼板３の各凸曲面３ａの表面
は、硬度を高めて摩擦係数を低減する表面硬化処理がな
されている。The central steel plate 3 has an octagonal shape when viewed in plan (FIG. 2), and the length between the opposing sides is substantially equal to the length of each side of the end steel plate 2. (FIG. 1). At the approximate center of each convex curved surface 3a of the central steel plate 3,
An elongated groove 3 which is sufficiently long in the X direction along the convex curved surface 3a.
b are provided in parallel in a plurality of rows (five rows in this embodiment). The surface of each convex curved surface 3a of the central steel plate 3 is subjected to a surface hardening treatment for increasing hardness and reducing friction coefficient.
【００１２】前記補助鋼板４，４はそれぞれ同形、同大
（請求項３）で、平面的に見ると前記中央鋼板３と略同
形、同大の八角形状とされている（図２、図３）。前記
各補助鋼板４の凸曲面４ａには、前記端部鋼板２に設け
られた溝部２ｂと一致させるべく、同凸曲面４ａの略中
央部にＹ方向へ十分に長い細長の溝部４ｃが複数列（本
実施例では５列）それぞれ平行に設けられている。一
方、前記各補助鋼板４の凹曲面４ｂには、前記中央鋼板
３の溝部３ｂと一致させるべく、同凹曲面４ｂの略中央
部にＸ方向へ十分に長い細長の溝部４ｄが複数列（本実
施例では５列）それぞれ平行に設けられている。また、
各補助鋼板４の凸曲面４ａ及び凹曲面４ｂの表面は、そ
れぞれ硬度を高めて摩擦係数を低減する表面硬化処理が
なされている。The auxiliary steel plates 4 and 4 have the same shape and the same size (claim 3), and have an octagonal shape substantially the same shape and the same size as the central steel plate 3 when viewed in plan (FIGS. 2 and 3). ). In the convex curved surface 4a of each of the auxiliary steel plates 4, a plurality of rows of elongated grooves 4c sufficiently long in the Y direction are provided at substantially the center of the convex curved surface 4a so as to match the grooves 2b provided in the end steel plate 2. (5 rows in the present embodiment) are provided in parallel. On the other hand, in the concave curved surface 4b of each of the auxiliary steel plates 4, a plurality of rows of elongated grooves 4d that are sufficiently long in the X direction are formed at substantially the center of the concave curved surface 4b so as to coincide with the grooves 3b of the central steel plate 3. In this embodiment, five rows are provided in parallel. Also,
The surfaces of the convex curved surface 4a and the concave curved surface 4b of each auxiliary steel plate 4 are subjected to a surface hardening treatment for increasing the hardness and reducing the friction coefficient, respectively.
【００１３】前記溝部２ｂ，３ｂ，４ｃ，４ｄに挿入し
て介在させたコロ５は、各溝部の幅と略等しい長さであ
り、図３に示したように、下方の端部鋼板２の凹曲面２
ａの溝部２ｂと上方の補助鋼板４の凸曲面４ａの溝部４
ｃには各列の略中央部にＹ方向へ回動可能に複数個（本
実施例では６個）ずつ接近した配置で設けられ、中央鋼
板３の上面の凸曲面３ａの溝部３ｂと下方の補助鋼板４
の凹曲面４ｂの溝部４ｄには各列の略中央部にＸ方向へ
回動可能に複数個（本実施例では６個）ずつ接近した配
置で設けられている。The rollers 5 inserted and interposed in the grooves 2b, 3b, 4c, 4d have a length substantially equal to the width of each groove, and as shown in FIG. Concave surface 2
a of the groove 2b and the groove 4 of the convex curved surface 4a of the upper auxiliary steel plate 4
c, a plurality of (six in this embodiment) are provided so as to be rotatable in the Y direction at substantially the center of each row, and are provided with the groove 3b of the convex curved surface 3a on the upper surface of the central steel plate 3 and the lower portion. Auxiliary steel plate 4
The groove 4d of the concave curved surface 4b is provided with a plurality (six in the present embodiment) close to the approximate center of each row so as to be rotatable in the X direction.
【００１４】即ち、前記の各鋼板２，３，４を上下方向
に積み重ねるとコロ５を挟んだサンドイッチ構造が形成
されるのである。前記端部鋼板２の凹曲面２ａの曲率や
前記中央鋼板３の凸曲面３ａの曲率は、それぞれ免震層
として達成したい復元周期（復元力の大きさ）に応じて
計算して求められる。以上のように構成された免震支承
１によれば、地震力等の水平力が発生したとき、直交す
る水平方向へ自在に動く荷重支持機能と重力作用に基づ
く復元力機能とを同時に発揮し、全水平方向の免震支承
が達成される。即ち、図４Ａ，Ｂに地震力等の水平力が
作用したときの免震支承１の変形の一例を示したよう
に、Ｘ方向への水平力が作用すると中央鋼板３と各補助
鋼板４，４との間に介在されるＸ方向へ回動可能なコロ
５のみが回動し、免震支承１の上下面は常に同一の水平
レベルを維持しつつ平行移動（変形）することが可能と
なり、免震構造物へ上下方向の変位を一切与えない（図
４Ａ）。一方、Ｙ方向への水平力が作用すると各端部鋼
板２，２と各補助鋼板４，４との間に介在されるＹ方向
へ回動可能なコロ５のみが回動し、免震支承１の上下面
は常に同一の水平レベルを維持しつつ平行移動（変形）
することが可能となり、免震構造物へ上下方向の変位を
一切与えない（図４Ｂ）。また、Ｘ軸方向とＹ軸方向の
合成ベクトル方向Ｚへ水平力が発生したときは、例えば
図５に示したようにＸ方向変位とＹ方向変位を合成する
変位を生じて、免震支承１は上下面を常に同一のまま水
平レベルを維持しつつ平行移動（変形）するのであり
（図４も参照）、免震構造物へ上下方向の変位を一切与
えない。更に、Ｘ方向の復元力は、前記中央鋼板３の凸
曲面３ａの曲率及び中間鋼板４の凹曲面４ｂの曲率によ
り一元的に独立して調整でき、また、Ｙ方向の復元力
も、前記端部鋼板２の凹曲面２ａの曲率及び補助鋼板４
の凸曲面４ａの曲率で一元的に独立して調整できる。即
ち、水平２方向の復元力を独立に決定できるのである。That is, when the steel plates 2, 3, and 4 are vertically stacked, a sandwich structure sandwiching the rollers 5 is formed. The curvature of the concave curved surface 2a of the end steel plate 2 and the curvature of the convex curved surface 3a of the central steel plate 3 are respectively calculated and obtained according to a restoration cycle (magnitude of restoring force) to be achieved as a base isolation layer. According to the seismic isolation bearing 1 configured as described above, when horizontal force such as seismic force is generated, a load supporting function that freely moves in an orthogonal horizontal direction and a restoring force function based on gravitational action are simultaneously exhibited. , Seismic isolation bearings in all horizontal directions are achieved. That is, as shown in FIGS. 4A and 4B, an example of deformation of the seismic isolation bearing 1 when a horizontal force such as seismic force is applied is shown. Only the roller 5 that is rotatable in the X direction and interposed between the bearing 4 rotates in the X direction, and the upper and lower surfaces of the seismic isolation bearing 1 can be translated (deformed) while always maintaining the same horizontal level. No vertical displacement is applied to the seismic isolation structure (FIG. 4A). On the other hand, when a horizontal force acts in the Y direction, only the roller 5 rotatable in the Y direction interposed between the end steel plates 2, 2 and the auxiliary steel plates 4, 4 rotates, and the seismic isolation bearing is provided. 1 Upper and lower surfaces are translated (deformed) while always maintaining the same horizontal level
And no vertical displacement is applied to the seismic isolation structure (FIG. 4B). Further, when a horizontal force is generated in the combined vector direction Z in the X-axis direction and the Y-axis direction, for example, as shown in FIG. Moves horizontally (deforms) while maintaining the horizontal level while keeping the upper and lower surfaces always the same (see also FIG. 4), and does not apply any vertical displacement to the seismic isolation structure. Further, the restoring force in the X direction can be independently and independently adjusted by the curvature of the convex curved surface 3a of the central steel plate 3 and the curvature of the concave curved surface 4b of the intermediate steel plate 4, and the restoring force in the Y direction is also controlled by the end portion. Curvature of concave curved surface 2a of steel plate 2 and auxiliary steel plate 4
Can be independently and independently adjusted by the curvature of the convex curved surface 4a. That is, the restoring force in the two horizontal directions can be determined independently.
【００１５】なお、上記実施例では、転動体にコロ５を
使用しているが、これに限定されるものではなく、ベア
リングボールでも容易に実施できる。また、免震支承１
を免震構造物と基礎との間に設置して実施しているが、
これに限定されるものではなく、橋台と桁等、所謂構造
物であれば様々な組み合わせで実施できる。因みに、下
記に説明する実施例についても同様の技術的思想とす
る。In the above-described embodiment, the rollers 5 are used for the rolling elements. However, the present invention is not limited to this. In addition, seismic isolation bearing 1
Is installed between the base-isolated structure and the foundation,
The present invention is not limited to this, and various combinations of so-called structures such as an abutment and a girder can be implemented. Incidentally, the same technical idea is applied to the embodiments described below.
【００１６】請求項２に記載した発明に係る免震支承
は、上述した請求項１に記載した発明に係る免震支承１
と比し、各鋼板２，３，４に設けられた凹曲面と凸曲面
をそれぞれ逆に形成していること以外は略同様である。
したがって、地震力等の水平力が発生したとき、水平方
向へ自在に動く荷重支持機能と重力作用に基づく復元力
機能とを同時に発揮し、全水平方向の免震支承が達成さ
れる。また、水平２方向の復元力を独立に決定できる。The seismic isolation bearing according to the invention described in claim 2 is the same as the seismic isolation bearing 1 according to the invention described in claim 1 described above.
This is substantially the same except that the concave curved surface and the convex curved surface provided on each of the steel plates 2, 3, and 4 are formed in reverse.
Therefore, when a horizontal force such as an earthquake force is generated, a load supporting function that freely moves in the horizontal direction and a restoring force function based on the gravitational effect are simultaneously exhibited, and an all-horizontal seismic isolation bearing is achieved. Further, the restoring force in the two horizontal directions can be determined independently.
【００１７】[0017]
【本発明が奏する効果】請求項１及び請求項２に記載し
た免震支承は、下記の効果を奏する。 地震力等の水平力が発生したとき、水平方向へ自在
に動く荷重支持機能と曲面効果と重力作用に基づく復元
力機能とを同時に発揮し、全水平方向の免震支承が達成
される。また、地震力等の水平力が作用したときでも、
免震支承の上下面は常に同一の水平レベルを維持しつつ
平行移動（変形）することが可能となり、免震構造物へ
上下方向の変位を一切与えない。 直交する水平２方向に対して独立に復元力を決定す
ることができる。[Effects of the present invention] The seismic isolation bearing described in claims 1 and 2 has the following effects. When a horizontal force such as seismic force is generated, a load supporting function that moves freely in the horizontal direction and a restoring force function based on a curved surface effect and a gravitational effect are simultaneously exhibited, thereby achieving a seismic isolation bearing in all horizontal directions. Also, even when horizontal force such as seismic force acts,
The upper and lower surfaces of the seismic isolation bearing can be translated (deformed) while always maintaining the same horizontal level, and do not apply any vertical displacement to the seismic isolation structure. The restoring force can be determined independently for two orthogonal horizontal directions.
【図１】本発明に係る免震支承の実施例を示した斜視図
である。FIG. 1 is a perspective view showing an embodiment of a seismic isolation bearing according to the present invention.
【図２】本発明に係る免震支承を構成する鋼板を示した
分解斜視図である。FIG. 2 is an exploded perspective view showing a steel plate constituting the seismic isolation bearing according to the present invention.
【図３】本発明に係る免震支承の各鋼板を示した平面図
である。FIG. 3 is a plan view showing each steel plate of the seismic isolation bearing according to the present invention.
【図４】Ａ，Ｂは、本発明に係る免震支承の変形時の実
施例を示した断面図である。FIGS. 4A and 4B are cross-sectional views showing an embodiment of a seismic isolation bearing according to the present invention when deformed.
【図５】本発明に係る免震支承の変形時の実施例を示し
た平面図である。FIG. 5 is a plan view showing an embodiment when the seismic isolation bearing according to the present invention is deformed.
１ 免震支承 ２ 端部鋼板 ２ａ 凹曲面 ２ｂ 溝部 ３ 中央鋼板 ３ａ 凸曲面 ３ｂ 溝部 ４ 補助鋼板 ４ａ 凸曲面 ４ｂ 凹曲面 ４ｃ 溝部 ４ｄ 溝部 ５ コロ ６ 免震構造物 ７ 基礎 DESCRIPTION OF SYMBOLS 1 Seismic isolation bearing 2 End steel plate 2a Concave curved surface 2b Groove 3 Central steel plate 3a Convex curved surface 3b Groove 4 Auxiliary steel plate 4a Convex curved surface 4b Concave curved surface 4c Groove 4d Groove 5 Roller 6 Seismic isolation structure 7 Foundation
フロントページの続き (72)発明者 相沢 覚 千葉県印西市大塚一丁目５番地１ 株式会 社竹中工務店技術研究所内 (72)発明者 東野 雅彦 千葉県印西市大塚一丁目５番地１ 株式会 社竹中工務店技術研究所内 (72)発明者 名波 豊 静岡県小笠郡菊川町堀之内547番地の１ 旭テック株式会社内 (72)発明者 一木 徳彦 静岡県小笠郡菊川町堀之内547番地の１ 旭テック株式会社内Continued on the front page (72) Inventor Satoru Aizawa 1-5-1, Otsuka, Inzai City, Chiba Prefecture Inside Takenaka Corporation Technical Research Institute (72) Inventor Masahiko Higashino 1-5-1, Otsuka, Inzai City, Chiba Prefecture Stock Company Inside the Technical Research Center, Takenaka Corporation (72) Inventor Yutaka Nanami 547-1, Horinouchi, Kikugawa-cho, Ogasa-gun, Shizuoka Prefecture Inside Asahi Tec Co., Ltd. Inside the corporation
Claims (3)
上下対称に配置され、免震構造物の下底面及び基礎上面
等に固定された２枚の端部鋼板と、 前記２枚の端部鋼板の間に配置され、前記Ｙ方向と直交
するＸ方向の凸曲面を上下面に有する１枚の中央鋼板
と、 前記各端部鋼板と中央鋼板との間に配置され、前記各端
部鋼板の凹曲面と同一の曲率を有するＹ方向の凸曲面
と、前記中央鋼板の凸曲面と同一の曲率を有するＸ方向
の凹曲面を上下面に有し、同凹曲面を上下対称に配置さ
れた２枚の補助鋼板と、 前記各鋼板の凹曲面または凸曲面の方向に沿って設けら
れた各溝部と、 前記上下に重なり合う各鋼板同士の相対面間で前記各溝
部に挿入して介在させたコロ又はベアリングボールと、
から成ることを特徴とする免震支承。1. Two end steel plates having a concave curved surface in the Y direction on one surface, the concave curved surfaces being arranged vertically symmetrically, and being fixed to a lower bottom surface, a foundation upper surface, etc. of the seismic isolation structure; One central steel plate having a convex curved surface in the X direction perpendicular to the Y direction on the upper and lower surfaces, disposed between the two end steel plates, and disposed between the end steel plates and the central steel plate; The upper and lower surfaces have a convex curved surface in the Y direction having the same curvature as the concave curved surface of each end steel plate, and a concave curved surface in the X direction having the same curvature as the convex curved surface of the central steel plate. Two auxiliary steel plates arranged symmetrically, each groove portion provided along the direction of the concave curved surface or the convex curved surface of each of the steel plates, and inserted into each of the groove portions between the relative surfaces of each of the vertically overlapping steel plates. Roller or bearing ball interposed as
A seismic isolation bearing comprising:
上下対称に配置され、免震構造物の下底面及び基礎上面
等に固定された２枚の端部鋼板と、 前記２枚の端部鋼板の間に配置され、前記Ｙ方向と直交
するＸ方向の凹曲面を上下面に有する１枚の中央鋼板
と、 前記各端部鋼板と中央鋼板との間に配置され、前記各端
部鋼板の凸曲面と同一の曲率を有するＹ方向の凹曲面
と、前記中央鋼板の凹曲面と同一の曲率を有するＸ方向
の凸曲面を上下面に有し、同凸曲面を上下対称に配置さ
れた２枚の補助鋼板と、 前記各鋼板の凸曲面または凹曲面の方向に沿って設けら
れた各溝部と、 前記上下に重なり合う各鋼板同士の相対面間で前記各溝
部に挿入して介在させたコロ又はベアリングボールと、
から成ることを特徴とする免震支承。2. Two end steel plates having a convex curved surface in the Y direction on one surface, the convex curved surfaces being arranged vertically symmetrically, and being fixed to the lower bottom surface, the foundation upper surface, etc. of the seismic isolation structure; One central steel plate disposed between two end steel plates and having a concave curved surface in the X direction perpendicular to the Y direction on upper and lower surfaces, and disposed between the end steel plates and the central steel plate; The upper and lower surfaces have a concave curved surface in the Y direction having the same curvature as the convex curved surface of each end steel plate, and a convex curved surface in the X direction having the same curvature as the concave curved surface of the central steel plate. Two auxiliary steel plates arranged symmetrically, each groove portion provided along the direction of the convex curved surface or the concave curved surface of each steel plate, and inserted into each groove portion between the relative surfaces of the vertically overlapping steel plates. Roller or bearing ball interposed as
A seismic isolation bearing comprising:
り、２枚の補助鋼板もそれぞれ同形、同大であることを
特徴とする請求項１又は２に記載した免震支承。3. The seismic isolation bearing according to claim 1, wherein the two end steel plates have the same shape and the same size, and the two auxiliary steel plates have the same shape and the same size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16352298A JPH11351319A (en) | 1998-06-11 | 1998-06-11 | Base isolation support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16352298A JPH11351319A (en) | 1998-06-11 | 1998-06-11 | Base isolation support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11351319A true JPH11351319A (en) | 1999-12-24 |
Family
ID=15775478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16352298A Pending JPH11351319A (en) | 1998-06-11 | 1998-06-11 | Base isolation support |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11351319A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107254983A (en) * | 2017-07-28 | 2017-10-17 | 中国地震局工程力学研究所 | Replaceable power consumption pedestal based on X-type mild steel piece |
| CN108716248A (en) * | 2018-06-27 | 2018-10-30 | 佛山科学技术学院 | A kind of two-sided roller support |
| JP2019194500A (en) * | 2019-07-02 | 2019-11-07 | 清水建設株式会社 | Seismic isolation mechanism |
| JP2020143728A (en) * | 2019-03-06 | 2020-09-10 | 清水建設株式会社 | Supporting mechanism and vibration proof floor structure |
-
1998
- 1998-06-11 JP JP16352298A patent/JPH11351319A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107254983A (en) * | 2017-07-28 | 2017-10-17 | 中国地震局工程力学研究所 | Replaceable power consumption pedestal based on X-type mild steel piece |
| CN108716248A (en) * | 2018-06-27 | 2018-10-30 | 佛山科学技术学院 | A kind of two-sided roller support |
| JP2020143728A (en) * | 2019-03-06 | 2020-09-10 | 清水建設株式会社 | Supporting mechanism and vibration proof floor structure |
| JP2019194500A (en) * | 2019-07-02 | 2019-11-07 | 清水建設株式会社 | Seismic isolation mechanism |
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