JPH07116687B2 - Rubber bearing device with middle-stage shear stopper for structures - Google Patents
Rubber bearing device with middle-stage shear stopper for structuresInfo
- Publication number
- JPH07116687B2 JPH07116687B2 JP1009666A JP966689A JPH07116687B2 JP H07116687 B2 JPH07116687 B2 JP H07116687B2 JP 1009666 A JP1009666 A JP 1009666A JP 966689 A JP966689 A JP 966689A JP H07116687 B2 JPH07116687 B2 JP H07116687B2
- Authority
- JP
- Japan
- Prior art keywords
- stopper
- rubber
- rubber bearing
- fixed
- engaging member
- 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.)
- Expired - Lifetime
Links
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- Bridges Or Land Bridges (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、プレストレストコンクリート製橋桁等の上部
構造物の横移動可能に支承する中段せん断ストッパ付き
ゴム支承装置に関するものである。TECHNICAL FIELD The present invention relates to a rubber bearing device with a middle-stage shear stopper for laterally movably supporting an upper structure such as a prestressed concrete bridge girder.
従来、橋桁等の上部構造物を支障するゴム支承装置とし
ては、橋台または橋脚等の可部構造物の上部に、ゴム支
承体の下部を固定し、そのゴム支承体の上部にプレスト
レスト製橋桁等の上部構造物の下部を載置して固定した
構造のゴム支承装置が知られている。Conventionally, as a rubber bearing device that interferes with an upper structure such as a bridge girder, a lower part of a rubber bearing is fixed to an upper part of a movable structure such as an abutment or a pier, and a prestressed bridge girder is attached to the upper part of the rubber bearing. There is known a rubber bearing device having a structure in which the lower part of the upper structure is placed and fixed.
ゴム支承体におけるゴム層の最小厚さは、ゴム支承体を
中心とする上部構造物の上下方向回転角（上部構造物の
被支承部の傾斜角によって決定されるので、ゴム層の最
小厚さには限界がある。The minimum thickness of the rubber layer in the rubber bearing is the vertical rotation angle of the upper structure around the rubber bearing (it is determined by the tilt angle of the supported part of the upper structure. Is limited.
また近年、ゴム支承体を経済的に製作するために、ゴム
支承体におけるゴム層を大きな支圧応力度で設計する傾
向になっている。しかし、大きな支圧応力度でゴム層を
設計すると、ゴム層の面積が小さくなるので、ゴム層の
面積に対するゴム層の厚さを割合が大きくなり、そのた
めゴム層のせん断弾性変形抵抗が小さくなるので、上部
構造物に大きな水平地震力が作用したとき、上部構造物
の横移動量が大きくなって不安定になり、かつゴム層の
せん断変形量が過大になって、ゴム層を構成するゴム材
の耐久性が悪くなる。Further, in recent years, in order to economically manufacture a rubber bearing, there is a tendency to design a rubber layer in the rubber bearing with a large bearing stress. However, if the rubber layer is designed with a large bearing stress, the area of the rubber layer will be small, and the ratio of the thickness of the rubber layer to the area of the rubber layer will be large, which will reduce the shear elastic deformation resistance of the rubber layer. Therefore, when a large horizontal seismic force is applied to the upper structure, the amount of lateral movement of the upper structure becomes large and becomes unstable, and the shear deformation amount of the rubber layer becomes excessive, and the rubber that forms the rubber layer becomes large. The durability of the material deteriorates.
この対策として、従来50゜〜60゜であるゴム層の硬度
を、例えば80゜〜90゜に上げる（硬くする）ことが考え
られるが、このようにゴム層の硬度を上げると、ゴム層
のせん断弾性変形抵抗が著しく大きくなり、そのため上
部構造物が温度変化により伸縮したり、上部構造物に予
想以上の（設計条件以上の）水平地震力が作用したと
き、ゴム支承体に大きなせん断応力が発生することにな
り、したがって、ゴム支承体下部構造物および上部構造
物との取付部にも過大なせん断力が作用する。また下部
構造物が橋脚であるときは、その橋脚にも過大な水平力
が作用する。As a countermeasure against this, it is conceivable to increase the hardness of the rubber layer, which is conventionally 50 ° to 60 °, to 80 ° to 90 ° (harden). However, if the hardness of the rubber layer is increased in this way, The shear elastic deformation resistance becomes significantly large, so that when the upper structure expands or contracts due to temperature changes, or when the horizontal seismic force more than expected (more than the design condition) acts on the upper structure, a large shear stress is applied to the rubber bearing body. Therefore, an excessive shearing force also acts on the mounting portions of the rubber bearing lower structure and the upper structure. When the substructure is a pier, an excessive horizontal force also acts on the pier.
また上部構造物に予想以上の水平地震力が作用したとき
の上部構造物の大きな横移動を防止するために、上部構
造物および下部構造物間に移動制限用ストッパを設置す
ることが考えられるが、この場合は、上部構造物のスト
ッパが下部構造物のストッパに衝突したとき、大きな衝
撃力が作用し、またその大きな衝撃力によりストッパが
破損する恐れがある。In addition, it is possible to install a movement restriction stopper between the upper structure and the lower structure in order to prevent a large lateral movement of the upper structure when a horizontal seismic force more than expected acts on the upper structure. In this case, when the stopper of the upper structure collides with the stopper of the lower structure, a large impact force acts, and the stopper may be damaged by the large impact force.
本発明は、ゴム支承装置の組み立てを容易にかつ迅速に
行なうことができ、かつゴム支承体におけるゴム層のせ
ん断弾性変形抵抗を小さくして、上部構造物が温度変化
により伸縮するとき、ゴム層に作用するせん断力を小さ
くすると共に、ゴム支承体と下部構造物および上部構造
物との取付部に作用するせん断力をも小さくすることが
でき、さらに上部構造物に大きな水平地震力が作用した
ときは、ゴム支承体の下部構造物および上部構造物との
取付部に大きな衝撃力が作用しないようにして上部構造
物の大きな横移動を弾性的に抑制することができる構造
物中段せん断ストッパ付きゴム支承装置を提供すること
を目的とするものである。The present invention makes it possible to assemble the rubber bearing device easily and quickly, reduces the shear elastic deformation resistance of the rubber layer in the rubber bearing body, and reduces the rubber layer when the upper structure expands and contracts due to temperature change. It is possible to reduce the shearing force that acts on the rubber bearings, and also the shearing force that acts on the attachments of the rubber bearings to the lower structure and the upper structure, and a large horizontal seismic force acts on the upper structure. In this case, with a structure middle-stage shear stopper that can prevent large lateral movement of the upper structure elastically by preventing a large impact force from acting on the mounting parts of the rubber bearing to the lower structure and upper structure. The purpose is to provide a rubber bearing device.
前記目的を達成するために、本発明の構造物用中段せん
断ストッパ付きゴム支承装置においては、下部構造物１
の上部に固定され鋼製ベースプレート17における上部構
造物３の長手方向の両側に鋼製ストッパ本７が一体に設
けられ、そのストッパ本体７における上部の内側に設け
られた凹部、無反発可縮性ストッパ８が嵌合固定され、
ゴム支承体２の下部に固定された下部金属板12の下部に
逆台形の下部突出部11が一体に設けられ、前記下部突出
部11はベースプレート17に設けられた逆台形の凹部18に
嵌合され、ゴム支承体２の上部に固定された上部金属板
14の上部に、台形の上部突出部13が一体に設けられ、そ
の上部突出部13は、上部構造物３の下部に固定された上
部支持板20における台形の凹部22に嵌合され、ゴム支承
体２のゴム層４における高さ方向の中間部に、そのゴム
層４の側面から突出すると共に、前記無反発可縮性スト
ッパ８に対向する位置において可動係合部材５を固定す
る。In order to achieve the above object, in the rubber bearing device with a middle-stage shear stopper for a structure of the present invention, the lower structure 1
Steel stoppers 7 are integrally provided on both sides in the longitudinal direction of the upper structure 3 fixed to the upper part of the steel base plate 17, and a recess provided inside the upper part of the stopper body 7 and a non-repulsive shrinkage The stopper 8 is fitted and fixed,
An inverted trapezoidal lower protrusion 11 is integrally provided on a lower portion of a lower metal plate 12 fixed to a lower portion of the rubber bearing 2, and the lower protrusion 11 is fitted into an inverted trapezoidal recess 18 provided on a base plate 17. Upper metal plate fixed to the upper part of the rubber bearing 2
A trapezoidal upper protruding portion 13 is integrally provided on the upper portion of 14, and the upper protruding portion 13 is fitted into a trapezoidal concave portion 22 of an upper supporting plate 20 fixed to a lower portion of the upper structure 3, and a rubber bearing is provided. The movable engagement member 5 is fixed to the middle portion of the rubber layer 4 of the body 2 in the height direction, protruding from the side surface of the rubber layer 4 and at a position facing the non-resilience contractible stopper 8.
上部構造物３が温度変化により伸縮すると、ゴム支承体
２におけるゴム層４全体がせん断弾性変形される。また
上部構造物３が大きな水平地震力により大きく横移動し
ようとしたときは、上部構造物３が或る量だけ横移動す
ると、可動係合部材５がストッパ６に突き当たるので、
その可動係合部材５の上下方向の一方にあるゴム層４の
せん断弾性変形が防止されると共に、前記可動係合部材
５の上下方向の他方にあるゴム層４のせん断弾性変形の
みが許容され、そのため可動係合部材５がストッパ６に
突き当たったのちは、ゴム支承体２のせん断弾性変形抵
抗が相当大きくなるので、上部構造物３に衝撃物３に衝
撃力を与えることなく、その上部構造物３の横移動が抑
制される。When the upper structure 3 expands and contracts due to temperature change, the entire rubber layer 4 of the rubber support 2 is sheared and elastically deformed. In addition, when the upper structure 3 tries to largely move laterally due to a large horizontal seismic force, the movable engaging member 5 abuts on the stopper 6 when the upper structure 3 laterally moves by a certain amount.
Shear elastic deformation of the rubber layer 4 on one side of the movable engaging member 5 in the vertical direction is prevented, and only shear elastic deformation of the rubber layer 4 on the other side of the movable engaging member 5 in the vertical direction is allowed. Therefore, after the movable engaging member 5 hits the stopper 6, the shear elastic deformation resistance of the rubber bearing 2 becomes considerably large, so that the upper structure 3 is not impacted by the impact structure 3 and the upper structure is The lateral movement of the object 3 is suppressed.
次に本発明を図面に示した例に基づいて詳細に説明す
る。Next, the present invention will be described in detail based on the examples shown in the drawings.
第５図および第６図は本発明の第１実施例において用い
られる可動係合部材付きゴム支承体10を示すものであっ
て、下面に逆台形の下部突出部11と備えている鋼板から
なる下部金属板12と、上面に台形の上部突出部13を備え
ている鋼板からなる上部金属板14との間に、硬度50゜〜
60゜のゴム層４が介在されて一体に固着されることによ
りゴム支承体２が構成され、かつ前記下部金属板12と上
部金属板14との間の下側に透孔15を有する鋼製補強板16
が配置されると共に、前記下部金属板12と上部金属板14
との間の上側に透孔15を有する鋼板製可動係合部材５が
配置され、さらに下部金属板12,鋼製補強板16,可動係合
部材５および上部金属板14がほぼ等間隔で配置されると
共に、可動係合部材５および補強板16がゴム層４に埋込
固定され、また可動係合部材５はゴム層４の前後両側面
（上部構造物長手方向の両側面）から突出している。5 and 6 show a rubber bearing 10 with a movable engaging member used in the first embodiment of the present invention, which is made of a steel plate having an inverted trapezoidal lower protrusion 11 on its lower surface. Between the lower metal plate 12 and the upper metal plate 14 made of a steel plate having a trapezoidal upper protrusion 13 on the upper surface, the hardness is 50 ° to
A rubber support 2 is formed by integrally fixing it with a 60 ° rubber layer 4 interposed, and is made of steel having a through hole 15 between the lower metal plate 12 and the upper metal plate 14. Reinforcement plate 16
Are arranged, and the lower metal plate 12 and the upper metal plate 14 are arranged.
A steel plate movable engaging member 5 having a through hole 15 is arranged on the upper side between and, and a lower metal plate 12, a steel reinforcing plate 16, a movable engaging member 5 and an upper metal plate 14 are arranged at substantially equal intervals. At the same time, the movable engaging member 5 and the reinforcing plate 16 are embedded and fixed in the rubber layer 4, and the movable engaging member 5 projects from both front and rear side surfaces (both side surfaces in the longitudinal direction of the upper structure) of the rubber layer 4. There is.
第１図ないし第３図は前記可動係合部材付きゴム支承体
10を使用した本発明の第１実施例に係る構造用中段せん
断ストッパ付きゴム支承装置を示すものであって、鋼製
ベースプレート17の中央上面に逆台形の凹部18が設けら
れ、そのベースプレート17の前後両側に鋼製ストッパ本
体７が一体に設けられ、そのストッパ本体７の上部に
は、前記可動係合部材５に対向する位置において切欠部
が設けられ、かつ無反発性ゴムからなる無反発可縮性ス
トッパ８は前記切欠部に嵌合されて接着剤により固定さ
れ、前記ストッパ本体７と無反発可縮性ストッパ８とに
よりストッパ６が構成されている。なお無反発可縮性ス
トッパ８を、ストッパ本７に対しボルトにより固定して
もよく、あるいは嵌合固定してもよい。1 to 3 show the rubber bearing with the movable engaging member.
1 shows a rubber bearing device with a middle-stage shear stopper for structural use according to a first embodiment of the present invention, in which an inverted trapezoidal recess 18 is provided in a central upper surface of a steel base plate 17, and the base plate 17 Steel stopper main bodies 7 are integrally provided on both front and rear sides, and notches are provided in an upper portion of the stopper main bodies 7 at positions facing the movable engaging member 5, and repulsion-free repulsion made of non-repulsive rubber is possible. The shrinkable stopper 8 is fitted into the cutout portion and fixed by an adhesive, and the stopper body 7 and the non-repulsive shrinkable stopper 8 constitute the stopper 6. The repulsion-free contractible stopper 8 may be fixed to the stopper book 7 with a bolt, or may be fitted and fixed.
前記ベースプレート17はコンクリート製橋台または橋脚
等の下部構造物１に載置されて複数のアンカーボルトナ
ット19により固定され、前記可動係合部材付きゴム支承
体10における下部金属板12がベースプレート17に載置さ
れると共に、下部突出部11がベースプレート17の凹部18
に嵌入され、かつ鋼製上部支持板20の上部に複数のアン
カー鋼棒21が固定されると共に、上部支持板20の中央部
に台形の凹部22が設けられ、さらに前記可動係合部材付
きゴム支承体10における上記金属板１に上部支承板20が
載置されると共に、上部突出部13が上部支持板20の凹部
22に嵌入され、次に上部支持板20の上にプレストレスト
コンクリート製橋桁からなる上部構造物３が施工され、
前記可動係合部材５とストッパ６における無反発可縮性
ストッパ８との間には、温度変化により上部構造物３が
伸縮するとき、ゴム層４全体のせん断変形を許容するた
めの間隙Ｄが設けられている。The base plate 17 is placed on a lower structure 1 such as a concrete abutment or a bridge pier and fixed by a plurality of anchor bolt nuts 19, and the lower metal plate 12 of the rubber bearing 10 with a movable engaging member is placed on the base plate 17. And the lower protrusion 11 is recessed in the base plate 17
And a plurality of anchor steel rods 21 are fixed to the upper part of the steel upper support plate 20, a trapezoidal recess 22 is provided in the center of the upper support plate 20, and the rubber with a movable engaging member is provided. The upper support plate 20 is placed on the metal plate 1 of the support body 10, and the upper protrusion 13 is a recess of the upper support plate 20.
22, and then the upper structure 3 made of prestressed concrete bridge girder is installed on the upper support plate 20,
A gap D is provided between the movable engaging member 5 and the non-repulsion-compressible stopper 8 of the stopper 6 to allow the shear deformation of the entire rubber layer 4 when the upper structure 3 expands and contracts due to temperature change. It is provided.
第１実施例の中段せん断ストッパ付きゴム支承装置にお
いて、上部構造物３に対し上部構造物長手方向の大きな
水平地震力が作用すると、上部構造物３は、ゴム層４に
よる比較的小さなせん断弾性抵抗を受けると共に、その
ゴム層４をせん断変形させながら横移動して行き、次い
で第４図に示すように、可動係合部材５がストッパ６に
おける無反発可縮性ストッパ８に突き当たると、可動係
合部材５の下部にあるゴム層４のせん断変形が防止され
るので、上部構造物３は、可動係合部材５の上部あるゴ
ム層４による比較的大きなせん断弾性抵抗を受けると共
に、可動係合部材５の上部のゴム層４をせん断変形させ
ながら横移動する。In the rubber bearing device with the middle stage shear stopper of the first embodiment, when a large horizontal seismic force in the longitudinal direction of the upper structure acts on the upper structure 3, the upper structure 3 has a relatively small shear elastic resistance due to the rubber layer 4. While receiving the rubber, the rubber layer 4 is laterally moved while being sheared and deformed, and then, as shown in FIG. 4, when the movable engaging member 5 abuts against the non-resilience contractible stopper 8 of the stopper 6, the movable engaging member 5 is moved. Since the shear deformation of the rubber layer 4 below the coupling member 5 is prevented, the upper structure 3 receives a relatively large shear elastic resistance due to the rubber layer 4 above the movable engaging member 5, and the movable engaging member The rubber layer 4 on the upper part of the member 5 is laterally moved while being shear-deformed.
したがつて、可動係合部材５がストッパ６の無反発可縮
性ストッパ８に突き当たるとき、その無反発可縮性スト
ッパ８により緩衝されると共に、可動係合部材５が無反
発可縮性ストッパ８に突き当たったのちは、上部構造物
３に対し可動係合部材５の上部のゴム層４による大きな
せん断弾性抵抗が作用するので、上部構造物３の大きな
横移動が防止される。Therefore, when the movable engagement member 5 hits the non-repulsion-compressible stopper 8 of the stopper 6, the movable engagement member 5 is buffered by the non-repulsion-compressible stopper 8 and the movable engagement member 5 does not contract. After hitting the upper structure 8, a large shear elastic resistance of the upper rubber layer 4 of the movable engaging member 5 acts on the upper structure 3, so that a large lateral movement of the upper structure 3 is prevented.
第７図および第８図は本発明の第２実施例を示すもので
あって、可動係合部材５がゴム層４の全側面から突出さ
れ、かつベースプレート17には、可動係合部材５の４辺
に対向するストッパ６が一体に設けられているが、その
他の構成は第１実施例の場合と同様である。7 and 8 show a second embodiment of the present invention, in which the movable engaging member 5 is projected from all side surfaces of the rubber layer 4, and the base plate 17 is provided with the movable engaging member 5. The stoppers 6 facing the four sides are integrally provided, but the other configurations are the same as in the case of the first embodiment.
第９図ないし第12図は本発明の第３実施例を示すもので
あって、ゴム支承体２が下部ゴム支承体ユニット2Aと上
部ゴム支承体ユニット2Bとにより構成され、前記下部ゴ
ム支承体ユニット2Aは、下部突出部11を有する下部金属
板12と、台形の上部突起23を有する上部鋼板24と、それ
らの間に介在されて一体に固着されたゴム層４と、その
ゴム層４に埋設された鋼性補強板16とにより構成され、
かつ前記上部ゴム支承体ユニット2Bは、逆台形の下部突
起25を有する下部鋼板26と、上部突起部13を有する上部
金属板14と、それらの間に介在されて一体に固着された
ゴム層４とにより構成され、さらに下部ゴム支承体ユニ
ット2Aと上部ゴム支承体ユニット2Bとの間に介在固定さ
れる鋼板製可動係合部材５には、上部突起23を嵌入する
台形の透孔27と下部突起25を嵌入する逆台形の透孔28と
が設けられ、前記可動係合部材５が下部ゴム支承体ユニ
ット2Aと上部ゴム支承体ユニット2Bとの間に着脱自在に
介在固定されているが、その他の構成は第１実施例の場
合と同様である。9 to 12 show a third embodiment of the present invention, in which a rubber bearing 2 is composed of a lower rubber bearing unit 2A and an upper rubber bearing unit 2B, and the lower rubber bearing is The unit 2A includes a lower metal plate 12 having a lower protruding portion 11, an upper steel plate 24 having a trapezoidal upper protrusion 23, a rubber layer 4 interposed therebetween and integrally fixed to the rubber layer 4. It is composed of a steel reinforcing plate 16 embedded,
In addition, the upper rubber bearing unit 2B includes a lower steel plate 26 having an inverted trapezoidal lower protrusion 25, an upper metal plate 14 having an upper protrusion 13, and a rubber layer 4 interposed therebetween and integrally fixed. And a trapezoidal through hole 27 into which the upper protrusion 23 is fitted, and a lower portion, in the movable engaging member 5 made of a steel plate which is interposed and fixed between the lower rubber bearing unit 2A and the upper rubber bearing unit 2B. An inverted trapezoidal through hole 28 into which the protrusion 25 is fitted is provided, and the movable engaging member 5 is detachably interposed and fixed between the lower rubber bearing unit 2A and the upper rubber bearing unit 2B. The other structure is the same as that of the first embodiment.
第13図ないし第15図は本発明の第４実施例を示すものて
あって、下部構造物１の上部に凹陥部29が設けられ、鋼
製ベースプレート17が前記凹陥部29の底部に埋設される
と共に、ベースプレート17の下部に固定された複数のア
ンカー鋼棒30が下部構造物１に埋設され、かつ凹陥部29
の上部の前後両側に、可動係合部材５の中央突出部およ
び上方に向かって開放されている箱状の受金具31が埋設
され、その受金具31内に、前記中央突出部に位置する金
属製受合板32と無反発性ゴムからなる無反発可縮性スト
ッパ８とが嵌設され、下部構造物１に固定された受金具
31と無反発可縮性ストッパ８および金属製受圧板32とに
よりストッパ６が構成されているが、その他の構成は第
１実施例の場合と同様である。13 to 15 show a fourth embodiment of the present invention, in which a recess 29 is provided in the upper portion of the lower structure 1, and a steel base plate 17 is embedded in the bottom of the recess 29. In addition, a plurality of anchor steel rods 30 fixed to the lower portion of the base plate 17 are embedded in the lower structure 1, and the recessed portion 29 is formed.
A central protruding portion of the movable engaging member 5 and a box-shaped receiving metal fitting 31 that is open upward are buried in both front and rear sides of the upper part of the metal, and the metal located in the central protruding portion is inside the receiving metal fitting 31. A receiving metal fitting in which the manufacturing receiving plate 32 and the non-repulsive and compressible stopper 8 made of non-repulsive rubber are fitted and fixed to the lower structure 1.
Although the stopper 6 is composed of the non-repulsive contractible stopper 8 and the metal pressure receiving plate 32, the other configurations are the same as those in the first embodiment.
本発明は前述のように構成されているので、以下に記載
するような効果を奏する。Since the present invention is configured as described above, it has the following effects.
ゴム支承体２の下部に固定された下部金属板12の下部に
逆台形の下部突出部11が一体に設けられ、前記下部突出
部11はベースプレート17に設けられた逆台形の凹部18に
嵌合されているので、ゴム支承体２の下部に固定された
下部金属板12とベースプレート17との位置合わせ嵌合を
容易に行なうことができ、かつゴム支承体22の上部に固
定された上部金属板14の上部に、台形の上部突出部13が
一体に設けられ、その上部突出部13は、上部構造物３の
下部に固定された上部支持板20における台形の凹部22の
嵌合されているので、ゴム支承体２の上部金属板14と上
部構造物３に固定される上部支持板20との位置合わせ嵌
合を容易に行なうことができ、そのためゴム支承装置の
組立てを容易にかつ迅速に行なうことができる。また上
部構造物３が温度変化により伸縮する場合は、ゴム支承
体２におけるゴム層４全体がせん断変形されるので、ゴ
ム支承体２におけるゴム層のせん断弾性変形抵抗を小さ
くして、上部構造物３を容易に伸縮させることができ、
かつゴム層４に発生するせん断応力を小さくすると共
に、ゴム支承体２と下部構造物１および上部構造物３と
取付部に作用するせん断力をも小さくすることができ、
さらに上部構造物３に大きな水平地震力が作用したとき
は、上部構造物３が或る量だけ横移動すると、可動係合
部材５がストッパ６に突き当たる時には、可動係合部材
５がストッパ６の無反発可縮性ストッパ８により緩衝さ
れながらストッパ６に突き当たり、かつ前記可動係合部
材５の上下方向の一方にあるゴム層４のせん断弾性変形
が防止されると共に、前記可動係合部材５の上下方向の
他方にあるゴム層４にせん断弾性変形のみが許容され、
そのため可動係合部材５がストッパ６に突き当たったの
ちは、ゴム支承体２のせん断弾性変形抵抗が相当大きく
なるので、上部構造物３に衝撃力を与えることなく、そ
の上部構造物３の大きな横移動を防止することができ
る。An inverted trapezoidal lower protrusion 11 is integrally provided on a lower portion of a lower metal plate 12 fixed to a lower portion of the rubber bearing 2, and the lower protrusion 11 is fitted into an inverted trapezoidal recess 18 provided on a base plate 17. Therefore, the lower metal plate 12 fixed to the lower part of the rubber support 2 and the base plate 17 can be easily aligned and fitted, and the upper metal plate fixed to the upper part of the rubber support 22. A trapezoidal upper protrusion 13 is integrally provided on the upper portion of 14, and the upper protrusion 13 is fitted into a trapezoidal recess 22 of the upper support plate 20 fixed to the lower portion of the upper structure 3. The upper metal plate 14 of the rubber bearing 2 and the upper support plate 20 fixed to the upper structure 3 can be easily aligned and fitted, and therefore the rubber bearing device can be easily and quickly assembled. be able to. Further, when the upper structure 3 expands and contracts due to temperature change, the entire rubber layer 4 of the rubber support 2 is sheared and deformed, so that the shear elastic deformation resistance of the rubber layer of the rubber support 2 is reduced and the upper structure 3 is reduced. 3 can be easily expanded and contracted,
Moreover, it is possible to reduce the shearing stress generated in the rubber layer 4 and also to reduce the shearing force acting on the rubber bearing 2, the lower structure 1, the upper structure 3, and the mounting portion.
Furthermore, when a large horizontal seismic force acts on the upper structure 3, when the upper structure 3 laterally moves by a certain amount, when the movable engaging member 5 hits the stopper 6, the movable engaging member 5 moves to the stopper 6. The rubber elastic layer 4 bumps against the stopper 6 while being buffered by the non-repulsion-compressible stopper 8 and prevents the elastic elastic deformation of the rubber layer 4 on one side of the movable engaging member 5 in the vertical direction, and at the same time, prevents the movable engaging member 5 from moving. Only shear elastic deformation is allowed in the rubber layer 4 on the other side of the vertical direction,
Therefore, after the movable engaging member 5 abuts on the stopper 6, the shear elastic deformation resistance of the rubber support 2 becomes considerably large, so that a large lateral force of the upper structure 3 does not occur without giving an impact force to the upper structure 3. Movement can be prevented.
第１図ないし第４図は本発明の第１実施例を示すものて
あって、第１図は中段せん断ストッパ付きゴム支承装置
の縦断側面図、第２図はその側面図、第３図は第１図の
Ａ−Ａ線断面図、第４図は可動係合部材がストッパに突
き当たったのち上部構造物がさらに横移動した状態を示
す縦断側面図である。第５図は本発明の第１実施例にお
いて用いられる可動係合部材付きゴム支承体の縦断側面
図、第６図はその平面図である。第７図は本発明の第２
実施例に係る中段せん段ストッパ付きゴム支承装置を示
す側面図、第８図は第７図Ｂ−Ｂ線断面図、第９図ない
し第12図は本発明の第３実施例を示すものであって、第
９図は中段せん断ストッパ付きゴム支承装置の縦断側面
図、第10図は可動係合部材付きゴム支承体を示す縦断側
面図、第11図は第10図のＣ−Ｃ線断面図、第12図は可動
係合部材付きゴム支承体を分解して示す縦断側面図であ
る。 第13図なしい第15図は本発明の第４実施例を示すもので
あって、第13図は中断せん断ストッパ付きゴム支承装置
の縦断側面図、第14図は第13図のＤ−Ｄ線断面図、第15
図は可動係合部材がストッパに突き当たったのち上部構
造物がさらに横移動した状態を示す縦断側面図である。 図中、1:下部構造物、2:ゴム支承体、2A:下部ゴム支承
体ユニット、2B:上部ゴム支承体ユニット、3:上部構造
物、4:ゴム層、5:可動係合部材、6:ストッパ、7:ストッ
パ本体、8:無反発可縮性ストッパ、10:可動係合部材突
きゴム支承体、11:下部突出部、12:下部金属板、13:上
部突出部、14:上部金属板、16:鋼製補強板、17:鋼製ベ
ースプレート、18:凹部、19:アンカーボルトナット、2
0:鋼製上部支持板、22:凹部、23:上記突起、24:上部鋼
板、25:下部突起、26:下部鋼板、27および28:透孔、29:
凹陥部、31:受金具、32:金属製受圧板。1 to 4 show a first embodiment of the present invention. FIG. 1 is a vertical sectional side view of a rubber bearing device with a middle-stage shear stopper, FIG. 2 is its side view, and FIG. 1 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. 4 is a vertical cross-sectional side view showing a state in which the upper structure further moves laterally after the movable engaging member hits the stopper. FIG. 5 is a vertical sectional side view of a rubber bearing with a movable engaging member used in the first embodiment of the present invention, and FIG. 6 is a plan view thereof. FIG. 7 shows the second aspect of the present invention.
FIG. 8 is a side view showing a rubber bearing device with a middle step stopper according to an embodiment, FIG. 8 is a sectional view taken along the line BB of FIG. 7, and FIGS. 9 to 12 show a third embodiment of the present invention. Thus, FIG. 9 is a vertical sectional side view of the rubber bearing device with a middle-stage shear stopper, FIG. 10 is a vertical sectional side view showing a rubber bearing body with a movable engaging member, and FIG. 11 is a sectional view taken along line CC of FIG. FIG. 12 and FIG. 12 are vertical side views showing the rubber bearing with a movable engaging member in an exploded manner. 13 and FIG. 15 show a fourth embodiment of the present invention. FIG. 13 is a vertical sectional side view of a rubber bearing device with an interrupting shear stopper, and FIG. 14 is DD of FIG. Line cross section, 15th
The figure is a vertical cross-sectional side view showing a state in which the upper structure further laterally moves after the movable engaging member hits the stopper. In the figure, 1: lower structure, 2: rubber bearing, 2A: lower rubber bearing unit, 2B: upper rubber bearing unit, 3: upper structure, 4: rubber layer, 5: movable engaging member, 6 : Stopper, 7: Stopper body, 8: Repulsion-free contractible stopper, 10: Rubber support for protruding movable engaging member, 11: Lower protrusion, 12: Lower metal plate, 13: Upper protrusion, 14: Upper metal Plate, 16: Steel reinforcing plate, 17: Steel base plate, 18: Recessed part, 19: Anchor bolt nut, 2
0: Steel upper support plate, 22: Recess, 23: Above protrusion, 24: Upper steel plate, 25: Lower protrusion, 26: Lower steel plate, 27 and 28: Through hole, 29:
Recessed part, 31: bracket, 32: metal pressure plate.
Claims (1)
スプレート17における上部構造物３の長手方向の両側に
鋼製ストッパ本体７が一体に設けられ、そのストッパ本
体７における上部の内側に設けられた凹部に、無反発可
縮性ストッパ８が嵌合固定され、ゴム支承体２の下部に
固定された下部金属板12の下部に逆台形の下部突出部11
が一体に設けられ、前記下部突出部11はベースプレート
17に設けられた逆台形の凹部18に嵌合され、ゴム支承体
２の上部に固定された上部金属板14の上部に、台形の上
部突出部13が一体に設けられ、その上部突出部13は、上
部構造物３の下部に固定された上部支持板20における台
形の凹部22に嵌合され、ゴム支承体２のゴム層４におけ
る高さ方向の中間部に、そのゴム層４の側面から突出す
ると共に、前記無反発可縮性ストッパ８に対向する位置
において可動係合部材５を固定した構造物用中段せん断
ストッパ付きゴム支承装置。1. A steel stopper body 7 is integrally provided on both sides of a steel base plate 17 fixed to an upper portion of a lower structure 1 in the longitudinal direction of an upper structure 3, and inside the upper portion of the stopper body 7. A repulsion-free contractible stopper 8 is fitted and fixed in the provided recess, and an inverted trapezoidal lower protrusion 11 is formed in the lower portion of a lower metal plate 12 fixed in the lower portion of the rubber support 2.
Are integrally provided, and the lower protrusion 11 is a base plate.
A trapezoidal upper protrusion 13 is integrally provided on the upper part of an upper metal plate 14 which is fitted in an inverted trapezoidal recess 18 provided in 17 and fixed to the upper part of the rubber bearing 2, and the upper protrusion 13 Is fitted in a trapezoidal recess 22 in the upper support plate 20 fixed to the lower portion of the upper structure 3, and is located at the middle portion in the height direction of the rubber layer 4 of the rubber bearing 2 from the side surface of the rubber layer 4. A rubber bearing device with a middle-stage shear stopper for a structure in which a movable engaging member 5 is fixed at a position that protrudes and faces the non-repulsion contractible stopper 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1009666A JPH07116687B2 (en) | 1989-01-20 | 1989-01-20 | Rubber bearing device with middle-stage shear stopper for structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1009666A JPH07116687B2 (en) | 1989-01-20 | 1989-01-20 | Rubber bearing device with middle-stage shear stopper for structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02194204A JPH02194204A (en) | 1990-07-31 |
| JPH07116687B2 true JPH07116687B2 (en) | 1995-12-13 |
Family
ID=11726539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1009666A Expired - Lifetime JPH07116687B2 (en) | 1989-01-20 | 1989-01-20 | Rubber bearing device with middle-stage shear stopper for structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07116687B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016030917A (en) * | 2014-07-28 | 2016-03-07 | 鹿島建設株式会社 | Vibration isolation mechanism |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006226449A (en) * | 2005-02-18 | 2006-08-31 | Kawaguchi Metal Industries Co Ltd | Rubber bearing device |
| KR101256771B1 (en) * | 2009-12-25 | 2013-04-25 | 요코하마 고무 가부시키가이샤 | Rubber-made support device |
| CN103966948B (en) * | 2014-05-10 | 2015-08-26 | 燕斌 | Girder falling spherical bearing |
| CN108560432B (en) * | 2018-05-02 | 2019-08-06 | 东南大学 | Limiting device and method for the punishment of one-way movable support installation direction mistake |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0442363Y2 (en) * | 1987-06-18 | 1992-10-06 |
-
1989
- 1989-01-20 JP JP1009666A patent/JPH07116687B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016030917A (en) * | 2014-07-28 | 2016-03-07 | 鹿島建設株式会社 | Vibration isolation mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02194204A (en) | 1990-07-31 |
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