JPH11325177A - Vibration resistant support device for structure - Google Patents
Vibration resistant support device for structureInfo
- Publication number
- JPH11325177A JPH11325177A JP6826299A JP6826299A JPH11325177A JP H11325177 A JPH11325177 A JP H11325177A JP 6826299 A JP6826299 A JP 6826299A JP 6826299 A JP6826299 A JP 6826299A JP H11325177 A JPH11325177 A JP H11325177A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- tensile force
- buffering
- laminated
- laminated rubber
- 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
- Bridges Or Land Bridges (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
- Springs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】 本発明は構造物用耐震支承
装置に関し、特に、積層ゴムによる圧縮力と水平力に対
する弾性支承機能に加えて引張力緩衝用ゴム体による引
張力に対する緩衝機能を有する構造物用耐震支承装置を
提供するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic bearing device for a structure, and more particularly to a structure having a cushioning function for a tensile force by a rubber member for tensile force in addition to an elastic bearing function for a compressive force and a horizontal force by a laminated rubber. An object is to provide a seismic bearing device for goods.
【０００２】[0002]
【従来の技術】 従来、構造物を基礎構造に対して耐震
支承する装置として、ゴム板と金属板とを交互に複数層
積層してなる積層ゴムを介して免震する積層ゴム式耐震
支承装置は広く実用に供され、例えば、橋桁を橋台や橋
脚に耐震支承する為に広く適用されている。前記積層ゴ
ムは、例えば板状の高減衰性ゴムと金属板とを交互に複
数層積層し、それらを加硫接着により一体的に固着し、
その上下両端に金属製の基板を設けた構造である。但
し、中心部に鉛製柱状体を装着して圧縮耐力を強化した
構造のものもある。2. Description of the Related Art Conventionally, as a device for supporting a structure to an earthquake-resistant base structure, a laminated rubber-type seismic bearing device that is isolated from the ground through a laminated rubber obtained by alternately laminating a plurality of rubber plates and metal plates. Is widely used for practical purposes, and is widely applied to, for example, seismic bearings of bridge girders to abutments or piers. The laminated rubber, for example, a plurality of plate-like high damping rubber and a metal plate are alternately laminated, and they are integrally fixed by vulcanization bonding,
This is a structure in which metal substrates are provided on both upper and lower ends. However, there is also a structure in which a column made of lead is attached to the center to enhance the compressive strength.
【０００３】この積層ゴムの圧縮方向の弾性係数は非常
に大きく、剪断方向の剪断弾性係数は比較的小さくなっ
ているため、積層ゴム式耐震支承装置は構造物の自重を
大きな圧縮変形なしに支持でき、地震時に水平方向へ大
きく剪断変形してエネルギーを吸収して免震し、地震後
には構造物を原位置へ復元させる機能がある。しかし、
積層ゴムに大きな引張力が作用した場合には、ゴム板の
破断、ゴム板と金属板との融着部の破断等により破損す
るため、積層ゴムには地震時のアップリフトに対して構
造物を免震する機能は殆どない。そこで、従来、アップ
リフトによる構造物の上方移動を拘束する為に、構造物
をリンク部材等で基礎構造側に連結する等の対策が採用
されている。[0003] Since the elastic modulus of this laminated rubber in the compression direction is very large and the shear elastic modulus in the shear direction is relatively small, the laminated rubber type seismic bearing device supports the weight of the structure without large compressive deformation. It has the function of absorbing large amounts of energy in the horizontal direction during an earthquake to absorb energy and seismic isolation, and to restore the structure to its original position after the earthquake. But,
If a large tensile force is applied to the laminated rubber, it will be damaged due to the breakage of the rubber plate or the fusion part between the rubber plate and the metal plate. There is almost no function of seismic isolation. Therefore, conventionally, in order to restrain the upward movement of the structure by the uplift, measures such as connecting the structure to the foundation structure side with a link member or the like have been adopted.
【０００４】[0004]
【発明が解決しようとする課題】 前記積層ゴム式耐震
支承装置は、地震時のアップリフトに対する拘束機能や
緩衝機能が殆どないため、地震時に構造物が基礎構造か
ら離脱して大きく移動したり、転落したりするという問
題がある。その対策として、リンク部材等で構造物を基
礎構造に連結する場合には、地震時における構造物の水
平移動が拘束され易くなるため、積層ゴム式耐震支承装
置の機能が著しく損なわれる。しかも、積層ゴム式耐震
支承装置とは独立に１又は複数のリンク部材を設けて構
造物と基礎構造とに連結する必要があるため、耐震支承
の為の装置が全体として大型化し、設置スペース面で不
利となり、製作コストも高価になる。Since the laminated rubber type seismic bearing device has almost no restraint function or cushioning function against an uplift in the event of an earthquake, the structure detaches from the foundation structure and largely moves during an earthquake, There is a problem of falling. As a countermeasure, when the structure is connected to the foundation structure by a link member or the like, the horizontal movement of the structure during an earthquake is easily restricted, so that the function of the laminated rubber type seismic bearing device is significantly impaired. In addition, since it is necessary to provide one or more link members independently of the laminated rubber-type seismic bearing device and connect them to the structure and the foundation structure, the device for the seismic bearing becomes large as a whole, and installation space is reduced. However, the manufacturing cost is high.
【０００５】本発明の目的は、積層ゴムに加えて引張力
緩衝用ゴム体と連結ロッドを組み込み地震時のアップリ
フトに対する緩衝機能を有する構造物用耐震支承装置を
提供することである。An object of the present invention is to provide a seismic bearing device for a structure which incorporates a rubber member for tensile force buffering and a connecting rod in addition to a laminated rubber and has a function of buffering an uplift during an earthquake.
【０００６】[0006]
【課題を解決するための手段】 請求項１の構造物用耐
震支承装置は、ゴム板と金属板とを交互に複数層積層し
た積層ゴムを介して構造物を基礎構造に耐震支承する装
置において、前記積層ゴムの上面側と下面側の少なくと
も一方に、積層ゴムに直列的に配置され且つ構造物と基
礎構造とを離間させる引張力に対する緩衝機能を得る為
の引張力緩衝用ゴム体を設け、この引張力緩衝用ゴム体
に対して直列的に引張力伝達用の連結ロッドを設けたも
のである。According to a first aspect of the present invention, there is provided an apparatus for supporting a structure on a foundation structure via a laminated rubber in which a plurality of rubber plates and metal plates are alternately laminated. At least one of an upper surface side and a lower surface side of the laminated rubber is provided with a rubber member for tensile force buffering which is arranged in series with the laminated rubber and has a buffering function for a tensile force for separating a structure from a basic structure. A connecting rod for transmitting a tensile force is provided in series with the rubber member for tensile force buffering.
【０００７】ここで、積層ゴムに引張力緩衝用ゴム体を
直列的に配置するとは、積層ゴムと引張力緩衝用ゴム体
との間に何らかの部材を介在させた状態で直列的に配置
することも含むものである。この構造物用耐震支承装置
において、静荷重による圧縮力及び地震時の圧縮力は積
層ゴムを介して支持され、地震時に構造物に横力が作用
した際には、積層ゴムの剪断弾性変形を介して横力が緩
衝され且つ弾性復元機能が得られる。[0007] The term "arrangement of the rubber member for tensile force buffering in series with the laminated rubber" means that the rubber member is arranged in series with some member interposed between the laminated rubber member and the rubber member for tensile force buffering. Is also included. In this seismic bearing device for structures, the compressive force due to the static load and the compressive force at the time of the earthquake are supported through the laminated rubber, and when a lateral force acts on the structure during the earthquake, the shear elastic deformation of the laminated rubber is reduced. Through this, the lateral force is buffered and an elastic restoring function is obtained.
【０００８】ここで、地震時に構造物にアップリフトが
作用して、構造物と基礎構造とが離間しようとすると、
アップリフトが連結ロッドを介して引張力緩衝用ゴム体
に伝達し、引張力緩衝用ゴム体が緩衝機能を発揮するた
め、構造物が基礎構造から離脱したり転落したりするの
を確実に防止できる。引張力に対する緩衝機能を引張力
緩衝用ゴム体で得るので、緩衝特性つまり弾性特性を設
定する自由度が高く、小型の引張力緩衝用ゴム体で強力
な緩衝機能を得ることができる。前記引張力緩衝用ゴム
体が積層ゴムの上面側と下面側の少なくとも一方に、積
層ゴムに直列的に配置されているため、積層ゴムと引張
力緩衝用ゴム体とを含む構造物用耐震支承装置をユニッ
ト化した小型の装置にすることができ、設置スペース面
でまた製作コスト的に有利となる。Here, when an uplift acts on a structure during an earthquake and the structure tries to separate from the foundation structure,
The uplift transmits to the tension buffer rubber via the connecting rod, and the tension buffer rubber exerts a buffer function, so that the structure is reliably prevented from falling off or falling off from the foundation structure it can. Since the cushioning function against tensile force is obtained by the rubber member for tensile force buffering, the degree of freedom for setting the buffering characteristics, that is, the elasticity is high, and a strong buffering function can be obtained with a small rubber member for tensile force buffering. Since the tensile force-absorbing rubber body is arranged in series with the laminated rubber on at least one of the upper surface side and the lower surface side of the laminated rubber, the structural seismic bearing including the laminated rubber and the tensile force-absorbed rubber body. The apparatus can be made into a small-sized apparatus, which is advantageous in terms of installation space and manufacturing cost.
【０００９】請求項２の構造物用耐震支承装置は、請求
項１の発明において、前記積層ゴムの上面側の引張力緩
衝用ゴム体を、積層ゴムの上端に載置される構造物側板
部材の上側に配置し、その引張力緩衝用ゴム体の上面に
上座板を設けるとともにこの上座板を前記連結ロッドに
より基礎構造に連結したことを特徴とするものである。
それ故、地震時に構造物にアップリフトが作用すると、
連結ロッドと上座板を介して引張力緩衝用ゴム体が圧縮
されて圧縮変形し、アップリフトを緩衝する。According to a second aspect of the present invention, there is provided a seismic bearing device for a structure according to the first aspect of the present invention, wherein the rubber member for cushioning the tensile force on the upper surface side of the laminated rubber is placed on the upper end of the laminated rubber. And an upper seat plate is provided on the upper surface of the rubber member for tensile force buffering, and the upper seat plate is connected to the basic structure by the connecting rod.
Therefore, when an uplift acts on a structure during an earthquake,
The rubber member for tensile force buffer is compressed and deformed via the connecting rod and the upper seat plate to buffer the uplift.
【００１０】請求項３の構造物用耐震支承装置は、請求
項１又は２の発明において、前記積層ゴムの下面側の引
張力緩衝用ゴム体を積層ゴムの下端を支持する基礎側板
部材の下側に配置し、その引張力緩衝用ゴム体の下面に
下座板を設けるとともにこの下座板を前記連結ロッドに
より構造物に連結したことを特徴とするものである。そ
れ故、地震時に構造物にアップリフトが作用すると、連
結ロッドと下座板を介して引張力緩衝用ゴム体が圧縮さ
れて圧縮変形し、アップリフトを緩衝する。According to a third aspect of the present invention, there is provided the seismic bearing device for a structure according to the first or second aspect of the present invention, wherein the rubber member for lowering the tensile force on the lower surface side of the laminated rubber is provided below the base side plate member supporting the lower end of the laminated rubber. And a lower seat plate is provided on the lower surface of the rubber member for cushioning the tensile force, and the lower seat plate is connected to the structure by the connecting rod. Therefore, when an uplift acts on a structure during an earthquake, the rubber member for tensile force cushion is compressed and deformed via the connecting rod and the lower seat plate to buffer the uplift.
【００１１】請求項４の構造物用耐震支承装置は、請求
項１の発明において、前記積層ゴムの上面側と下面側の
両方に、前記引張力緩衝用ゴム体を設け、前記積層ゴム
の上面側の引張力緩衝用ゴム体を積層ゴムの上端に載置
される構造物側板部材の上側に配置し、その引張力緩衝
用ゴム体の上面に上座板を設け、前記積層ゴムの下面側
の引張力緩衝用ゴム体を積層ゴムの下端を支持する基礎
側板部材の下側に配置し、その引張力緩衝用ゴム体の下
面に下座板を設け、前記上座板と下座板とが相離隔しな
いように前記連結ロッドで連結したことを特徴とするも
のである。それ故、地震時に構造物にアップリフトが作
用すると、連結ロッドと上座板と下座板を介して上下両
方の引張力緩衝用ゴム体が圧縮されて圧縮変形し、アッ
プリフトを緩衝する。According to a fourth aspect of the present invention, there is provided a seismic bearing device for a structure according to the first aspect of the present invention, wherein the rubber member for cushioning the tensile force is provided on both the upper surface and the lower surface of the rubber laminate. The side rubber member for tensile force buffer is disposed above the structure side plate member placed on the upper end of the laminated rubber, and an upper seat plate is provided on the upper surface of the rubber member for tensile force buffer, and the lower surface side of the laminated rubber is provided. The rubber member for tensile force buffer is disposed below the base side plate member supporting the lower end of the laminated rubber, and a lower seat plate is provided on the lower surface of the rubber member for tensile force buffer. It is characterized by being connected by the connecting rod so as not to be separated. Therefore, when the uplift acts on the structure during an earthquake, both the upper and lower tensile force buffering rubber bodies are compressed and deformed via the connecting rod, the upper seat plate, and the lower seat plate to buffer the uplift.
【００１２】請求項５の構造物用耐震支承装置は、請求
項２〜４の何れか１項の発明において、前記連結ロッド
が少なくとも積層ゴムと引張力緩衝用ゴム体とを挿通さ
せて配設されたことを特徴とするものである。それ故、
構造物用耐震支承装置の小型化を図ることができる。According to a fifth aspect of the present invention, there is provided a seismic bearing device for a structure according to any one of the second to fourth aspects, wherein the connecting rod is provided by inserting at least the laminated rubber and the rubber member for tensile force buffering. It is characterized by having been done. Therefore,
The size of the seismic bearing device for structures can be reduced.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照して説明する。図１、図２に示すように、
橋桁８０の端部が２組の構造物用耐震支承装置Ｓにより
橋台８１（基礎構造に相当する）に耐震支承されてい
る。２組の耐震支承装置Ｓは図１の紙面直交方向に適当
間隔空けて配置されている。図１は橋桁８０及び橋台８
１の要部と耐震支承装置Ｓの正面図であり、図２は図１
のII−II線断面図である。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2,
An end of the bridge girder 80 is seismically supported on an abutment 81 (corresponding to a foundation structure) by two sets of structural seismic bearing devices S. The two sets of seismic bearing devices S are arranged at appropriate intervals in a direction perpendicular to the plane of FIG. Figure 1 shows the bridge girder 80 and the abutment 8
FIG. 2 is a front view of a main part 1 and an earthquake-resistant bearing device S, and FIG.
FIG. 2 is a sectional view taken along line II-II of FIG.
【００１４】この耐震支承装置Ｓは、ベース板８２、ア
ンカーフレーム８３、このアンカーフレーム８３と橋桁
８０間に挟着された積層ゴム８４、アンカーフレーム８
３の頂板８３ａ（基礎側板部材に相当する）の下面側に
積層ゴム８４と直列状に配設された４個の引張力緩衝用
ゴム体８５ｂ、橋桁８０のフランジ８０ａ（構造物側板
部材に相当する）の上面側に積層ゴム８４と直列状に配
設された４個の引張力緩衝用ゴム体８５ａ、上下に対応
する引張力緩衝用ゴム体８５ａ，８５ｂを連結する連結
ロッド８６等を有する。ベース板８２は例えば８本のア
ンカーボルト８７にて橋台８１に水平に固定され、この
ベース板８２の上面にアンカーフレーム８３が溶接され
ている。アンカーフレーム８３は、水平な頂板８３ａと
複数の立板８３ｂとを一体的に溶接したほぼボックス状
のものである。The seismic bearing device S includes a base plate 82, an anchor frame 83, a laminated rubber 84 sandwiched between the anchor frame 83 and the bridge girder 80, an anchor frame 8
The four rubber members 85b for cushioning the tensile force arranged in series with the laminated rubber 84 on the lower surface side of the top plate 83a (corresponding to the base side plate member), and the flange 80a of the bridge girder 80 (corresponding to the structural side plate member) On the upper surface side, four rubber members 85a for buffering tensile force arranged in series with the laminated rubber 84, and a connecting rod 86 for connecting the rubber members 85a and 85b for tensile force buffering corresponding to the upper and lower sides. . The base plate 82 is horizontally fixed to the abutment 81 with, for example, eight anchor bolts 87, and an anchor frame 83 is welded to the upper surface of the base plate 82. The anchor frame 83 has a substantially box shape in which a horizontal top plate 83a and a plurality of upright plates 83b are integrally welded.
【００１５】積層ゴム８４は、周知の積層ゴムと同様の
もので、例えば高減衰性ゴムのゴム板と金属板とを交互
に複数層積層してそれらを加硫接着し、上下両端に基板
８４ａを固定した構造のものである。尚、積層ゴム８４
の中央部の全高にわたって鉛製の柱状体を組み込むこと
もある。この積層ゴム８４は、橋桁８０の自重と車両等
による動荷重を支持し得るように非常に大きな圧縮弾性
係数を有するとともに、地震時に水平方向へ弾性的にか
なりの量剪断変形してエネルギー吸収を行ない地震終了
時には原位置へ復元する機能を有するものである。尚、
本実施形態では平面視正方形状の積層ゴム８４を適用し
たが平面視円形状の積層ゴムを適用してもよい。The laminated rubber 84 is similar to a well-known laminated rubber. For example, a rubber plate and a metal plate of a high damping rubber are alternately laminated in a plurality of layers, and they are vulcanized and adhered. Is fixed. The laminated rubber 84
In some cases, lead pillars may be incorporated over the entire height of the central part of the vehicle. The laminated rubber 84 has a very large compression elastic modulus so as to be able to support the own weight of the bridge girder 80 and the dynamic load of the vehicle, etc., and also elastically shears a considerable amount in the horizontal direction during an earthquake to absorb energy. It has the function of restoring to the original position at the end of the earthquake. still,
In the present embodiment, the laminated rubber 84 having a square shape in plan view is applied, but a laminated rubber having a circular shape in plan view may be applied.
【００１６】８個の引張力緩衝用ゴム体８５ａ，８５ｂ
は、地震時に橋桁８０と橋台８１とを離間させる引張力
に対する緩衝機能を得る為のものであり、例えば、高減
衰性ゴムの円柱体からなる。上側の４個の引張力緩衝用
ゴム体８５ａのうちの２個は橋桁８０のウェブ板８０ｂ
の前側に配置され、残りの２個はウェブ板８０ｂの後側
に配置されている。各引張力緩衝用ゴム体８５ａは下端
側の滑り板８７ａと上端側の上座板８８ａ間に挟着され
ている。上側の４個の引張力緩衝用ゴム体８５ａに夫々
鉛直方向に対応するように下側の４個の引張力緩衝用ゴ
ム体８５ｂが配設されている。各引張力緩衝用ゴム体８
５ｂは上端側の滑り板８７ｂと下端側の下座板８８ｂ間
に挟着されている。Eight rubber members 85a and 85b for buffering tensile force
Is for obtaining a buffering function against a tensile force that separates the bridge girder 80 and the abutment 81 during an earthquake, and is made of, for example, a cylinder of high damping rubber. Two of the upper four rubber members 85a for tension buffering are web plates 80b of the bridge girder 80.
, And the remaining two are arranged on the rear side of the web plate 80b. Each rubber member 85a for buffering the tensile force is sandwiched between a slide plate 87a on the lower end side and an upper seat plate 88a on the upper end side. The four lower rubber members 85b are arranged to correspond to the upper four rubber rubber members 85a in the vertical direction, respectively. Rubber body for each tensile force buffer 8
5b is sandwiched between a slide plate 87b on the upper end side and a lower seat plate 88b on the lower end side.
【００１７】図示のように、連結ロッド８６を挿通して
上下に対応する上座板８８ａと下座板８８ｂとを連結で
きるように、４組の各々において、上座板８８ａと引張
力緩衝用ゴム体８５ａと滑り板８７ａとフランジ８０ａ
と積層ゴム８５ｂと滑り板８７ｂと引張力緩衝用ゴム体
８５ｂと下座板８８ｂとに穴が形成され、それらの穴に
連結ロッド８６が挿通され、連結ロッド８６の上端部に
は座金８９とナット９０とが締結されて上座板８８ａに
当接し、連結ロッド８５の下端部には座金８９とナット
９０とが締結されて下座板８８ｂに当接している。この
ように、各連結ロッド８５は、積層ゴム８４と上下の積
層ゴム８４ａ，８４ｂに対して直列的に配置されてい
る。As shown in the drawing, the upper seat plate 88a and the rubber member for cushioning the tensile force are provided in each of the four sets so that the upper seat plate 88a and the lower seat plate 88b corresponding to the upper and lower sides can be connected by inserting the connecting rod 86. 85a, slide plate 87a and flange 80a
A hole is formed in the laminated rubber 85b, the sliding plate 87b, the rubber member 85b for buffering the tensile force, and the lower seat plate 88b, and a connecting rod 86 is inserted into the hole. A nut 90 is fastened to abut against the upper seat plate 88a, and a lower end of the connecting rod 85 is fastened to a washer 89 and the nut 90 to abut against the lower seat plate 88b. As described above, each connecting rod 85 is arranged in series with the laminated rubber 84 and the upper and lower laminated rubbers 84a and 84b.
【００１８】こうして、上下に対応する上座板８８ａと
下座板８８ｂ間の間隔が拡大しないように連結ロッド８
６で連結され、地震時にアップリフトが作用すると、連
結ロッド８６を介して上下の引張力緩衝用ゴム体８５
ａ，８５ｂが圧縮変形してアップリフトを緩衝し、橋桁
８０が大きく上方移動しないように拘束し、地震終了後
には原状態に復元させる。In this manner, the connecting rods 8 are arranged so that the distance between the upper and lower seat plates 88a and 88b corresponding to the upper and lower sides does not increase.
6, and when an uplift acts during an earthquake, the upper and lower tensile force buffering rubber members 85 are connected via connecting rods 86.
The a and 85b compress and deform to cushion the uplift, restrain the bridge girder from moving significantly upward, and restore the original state after the end of the earthquake.
【００１９】ところで、地震時に橋桁８０が水平方向の
どの方向へ水平移動した場合にも、積層ゴム８４を機能
させる為に、フランジ８０ａに形成される連結ロッド８
６の為の挿通穴８０ｃと、アンカーフレーム８３の頂板
８３ａに形成される連結ロッド８６の為の挿通穴８３ｃ
とは、積層ゴム８４の剪断変形を許容するのに十分な大
きさの円形穴に形成されている。尚、引張力緩衝用ゴム
体８５ａ，８５ｂが圧縮変形する際に、それらが挿通穴
８０ｃ，８３ｃに入り込まないようにする為に、滑り板
８７ａ，８７ｂが水平方向へ可動に設けられている。By the way, even if the bridge girder 80 moves horizontally in any horizontal direction during an earthquake, the connecting rod 8 formed on the flange 80a is required to allow the laminated rubber 84 to function.
6 and an insertion hole 83c for the connecting rod 86 formed in the top plate 83a of the anchor frame 83.
Is formed in a circular hole large enough to allow shear deformation of the laminated rubber 84. In order to prevent the tensile force buffer rubber members 85a and 85b from entering the insertion holes 80c and 83c when the rubber members 85a and 85b are compressed and deformed, sliding plates 87a and 87b are provided movably in the horizontal direction.
【００２０】この構造物用耐震支承装置Ｓによれば、静
荷重や車両等からの動荷重による圧縮力及び地震時の圧
縮力は積層ゴム８４を介して支持され、地震時に橋桁８
０に水平方向向きの横力が作用した際には、積層ゴム８
４の剪断弾性変形を介して横力が緩衝され且つ弾性復元
機能が得られる。地震時に橋桁８０にアップリフトが作
用して、橋桁８０が橋台８１から離間しようとすると、
４本の連結ロッド８６を介してアップリフトがが伝達さ
れ、合計８個の引張力緩衝用ゴム体８５ａ，８５ｂが圧
縮変形して緩衝機能を発揮するため、橋桁８０が橋台８
１から離脱したり転落したりするのを確実に防止でき
る。According to the seismic bearing device S for a structure, the compressive force due to a static load or a dynamic load from a vehicle or the like and the compressive force at the time of an earthquake are supported via the laminated rubber 84, and the bridge girder 8 at the time of an earthquake.
0 when a horizontal force acts on the rubber layer 8
The lateral force is buffered through the shear elastic deformation of No. 4 and an elastic restoring function is obtained. When an uplift acts on the bridge girder 80 during an earthquake and the bridge girder 80 tries to separate from the abutment 81,
The uplift is transmitted via the four connecting rods 86, and a total of eight rubber members 85a, 85b for tensile force buffering are compressed and deformed to exhibit a buffering function.
It is possible to reliably prevent the device from falling off or falling off from the device.
【００２１】引張力に対する緩衝機能を引張力緩衝用ゴ
ム体８５ａ，８５ｂで得るので、緩衝特性つまり弾性特
性を設定する自由度が高く、小型の引張力緩衝用ゴム体
８５ａ，８５ｂで強力な緩衝機能を得ることができる。
引張力緩衝用ゴム体８５ａ，８５ｂが積層ゴム８４の上
面側と下面側の両側に、積層ゴム８４に直列的に配置さ
れているため、積層ゴム８４と引張力緩衝用ゴム体８５
ａ，８５ｂとを含む構造物用耐震支承装置Ｓをユニット
化された小型の装置にすることができ、設置空間や設置
スペース面でまた製作コスト的に有利となる。連結ロッ
ド８６を積層ゴム８４と引張力緩衝用ゴム体８５ａ，８
５ｂとを挿通させて配設したので、構造物用耐震支承装
置Ｓの小型化を図ることができる。Since the cushioning function against the tensile force is obtained by the rubber members 85a and 85b for buffering the tensile force, there is a high degree of freedom in setting the buffering characteristics, that is, the elasticity. Function can be obtained.
Since the rubber members 85a and 85b for buffering the tensile force are arranged in series with the laminated rubber 84 on both the upper surface side and the lower surface side of the laminated rubber 84, the laminated rubber 84 and the rubber member 85 for tensile force buffering are provided.
The structural seismic bearing device S including the components a and 85b can be made into a small unitized device, which is advantageous in terms of installation space, installation space, and manufacturing cost. The connecting rod 86 is connected to the laminated rubber 84 and the rubber members 85a, 85 for buffering the tensile force.
5b, the structure can be downsized.
【００２２】以上説明した構造物用耐震支承装置Ｓを変
更する変更例について説明する。 １〕前記積層ゴム８４の上下両側に引張力緩衝用ゴム体
８５ａ，８５ｂを配置する必要はなく、積層ゴム８４の
上側又は下側の何れか一方に引張力緩衝用ゴム体を設け
てもよい。例えば、下側の４個の引張力緩衝用ゴム体８
５ｂと、アンカーフレーム８３とを省略し、積層ゴム８
４をベース板８２の上面に当接状に配置し、各連結ロッ
ド８６の下端部をベース板８２に連結してもよい。この
場合、アンカーフレーム８３の高さ分装置の全高を小さ
くできるので、設置空間的に有利になり、製作コスト面
でも有利である。これと反対に、上側の４個の引張力緩
衝用ゴム体８５ａを省略し、連結ロッド８６の上端部を
橋桁８０に連結してもよい。A modification example in which the above-described structural seismic bearing device S is changed will be described. 1) It is not necessary to dispose the rubber members 85a and 85b for buffering the tensile force on both the upper and lower sides of the laminated rubber 84, and the rubber members for buffering the tensile force may be provided on either the upper side or the lower side of the laminated rubber 84. . For example, the lower four rubber members 8 for tensile force buffering
5b and the anchor frame 83 are omitted, and the laminated rubber 8
4 may be arranged in contact with the upper surface of the base plate 82, and the lower end of each connecting rod 86 may be connected to the base plate 82. In this case, the overall height of the device can be reduced by the height of the anchor frame 83, which is advantageous in terms of installation space and also in terms of manufacturing cost. Conversely, the upper four rubber members 85 a for buffering the tensile force may be omitted, and the upper end of the connecting rod 86 may be connected to the bridge girder 80.
【００２３】２〕前記引張力緩衝用ゴム体８５ａ，８５
ｂを、天然ゴム、種々の合成ゴム（クロロプレンゴム、
ウレタンゴム、シリコンゴム等）で構成してもよいし、
また、引張力緩衝用ゴム体８５ａ，８５ｂを積層ゴム８
４よりも小さな圧縮方向弾性係数を有する積層ゴムで構
成してもよい。2) The rubber members 85a and 85 for buffering the tensile force
b, natural rubber, various synthetic rubbers (chloroprene rubber,
Urethane rubber, silicon rubber, etc.)
Further, the rubber members 85a and 85b for tensile force buffering are
It may be made of a laminated rubber having a compression direction elastic modulus smaller than 4.
【００２４】３〕前記積層ゴム８４の形状、引張力緩衝
用ゴム体８５ａ，８５ｂの形状は一例を示すものに過ぎ
ず、種々の形状に構成することができる。そして、引張
力緩衝用ゴム体８５ａ，８５ｂの圧縮変形を抑制する為
に、上座板８８ａからゴム体よりも大径の筒体を下方へ
短く延ばしてもよく、同様に、下座板８８ｂからゴム体
よりも大径の筒体を上方へ短く延ばしてもよい。3) The shape of the laminated rubber 84 and the shape of the rubber members 85a and 85b for cushioning the tensile force are merely examples, and various shapes can be employed. Then, in order to suppress the compressive deformation of the rubber members 85a and 85b for tensile force buffering, a cylindrical body having a larger diameter than the rubber body may be extended downward from the upper seat plate 88a, and similarly, from the lower seat plate 88b. A cylindrical body having a larger diameter than the rubber body may be shortly extended upward.
【００２５】[0025]
【発明の効果】 請求項１の構造物用耐震支承装置によ
れば、静荷重による圧縮力及び地震時の圧縮力は積層ゴ
ムを介して支持され、地震時に構造物に横力が作用した
際には、積層ゴムの剪断弾性変形を介して横力が緩衝さ
れ且つ弾性復元機能が得られる。地震時に構造物にアッ
プリフトが作用して、構造物と基礎構造とが離間しよう
とすると、そのアップリフトが連結ロッドを介して伝達
され、引張力緩衝用ゴム体が緩衝機能を発揮するため、
構造物が基礎構造から離脱したり転落したりするのを確
実に防止できる。According to the first embodiment of the present invention, the compressive force due to the static load and the compressive force at the time of the earthquake are supported via the laminated rubber, and when a lateral force acts on the structure at the time of the earthquake. , The lateral force is buffered through the shear elastic deformation of the laminated rubber, and an elastic restoring function is obtained. When an uplift acts on a structure during an earthquake and the structure tries to separate from the substructure, the uplift is transmitted via a connecting rod, and the rubber body for tensile force buffering exerts a buffering function.
The structure can be reliably prevented from falling off or falling off from the foundation structure.
【００２６】引張力に対する緩衝機能を引張力緩衝用ゴ
ム体で得るので、緩衝特性つまり弾性特性を設定する自
由度が高く、小型の引張力緩衝用ゴム体で強力な緩衝機
能を得ることができる。引張力伝達用の連結ロッドを引
張力緩衝用ゴム体に対して直列的に設けたので、引張力
緩衝用ゴム体を圧縮させて引張力を緩衝することが可能
になるから、引張力に対する強度と耐久性を高めること
ができ、構造物の転倒や転落を防止する上でも有利であ
る。Since the cushioning function against the tensile force is obtained by the rubber member for tensile force buffering, the degree of freedom for setting the buffering characteristic, that is, the elasticity is high, and a strong buffering function can be obtained with a small rubber member for tensile force buffering. . Since the connecting rod for transmitting the tensile force is provided in series with the rubber member for buffering the tensile force, the rubber member for buffering the tensile force can be compressed to buffer the tensile force. And the durability can be enhanced, which is advantageous in preventing the structure from falling over or falling down.
【００２７】さらに、前記引張力緩衝用ゴム体が積層ゴ
ムの上面側と下面側の少なくとも一方に、積層ゴムに直
列的に配置されているため、積層ゴムと引張力緩衝用ゴ
ム体とを含む構造物用耐震支承装置をユニット化した小
型の装置にすることができ、設置スペース面でまた製作
コスト的に有利となる。Further, since the rubber member for tensile force buffer is arranged in series with the laminated rubber on at least one of the upper surface side and the lower surface side of the laminated rubber, it includes the laminated rubber member and the rubber member for tensile force buffer. It is possible to make a compact device in which the seismic bearing device for structures is unitized, which is advantageous in terms of installation space and in terms of manufacturing cost.
【００２８】請求項２の発明によれば、地震時に構造物
にアップリフトが作用すると、連結ロッドと上座板を介
して引張力緩衝用ゴム体が圧縮されて圧縮変形し、アッ
プリフトを確実に緩衝する。その他請求項１と同様の効
果を奏する。請求項３の発明によれば、地震時に構造物
にアップリフトが作用すると、連結ロッドと下座板を介
して引張力緩衝用ゴム体が圧縮されて圧縮変形し、アッ
プリフトを確実に緩衝する。その他請求項１又は２と同
様の効果を奏する。According to the second aspect of the present invention, when an uplift acts on a structure during an earthquake, the rubber member for tensile force compression is compressed and deformed via the connecting rod and the upper seat plate, and the uplift is reliably performed. Buffer. The other effects are the same as those of the first aspect. According to the third aspect of the present invention, when the uplift acts on the structure during an earthquake, the rubber member for tensile force buffer is compressed and deformed via the connecting rod and the lower seat plate, thereby reliably buffering the uplift. . The other effects are the same as those of the first or second aspect.
【００２９】請求項４の発明によれば、地震時に構造物
にアップリフトが作用すると、連結ロッドと上座板と下
座板を介して上下両方の引張力緩衝用ゴム体が圧縮され
て圧縮変形し、アップリフトを確実に緩衝する。その他
請求項１と同様の効果を奏する。請求項５の発明によれ
ば、連結ロッドが少なくとも積層ゴムと引張力緩衝用ゴ
ム体とを挿通させて配設されたので、構造物用耐震支承
装置の小型化を図ることができる。その他請求項２〜４
の何れか１項と同様の効果を奏する。According to the fourth aspect of the present invention, when an uplift acts on the structure during an earthquake, both the upper and lower tensile force-absorbing rubber bodies are compressed via the connecting rod, the upper seat plate and the lower seat plate, and are compressed and deformed. And ensure that the uplift is cushioned. The other effects are the same as those of the first aspect. According to the fifth aspect of the present invention, since the connecting rod is disposed so that at least the laminated rubber and the rubber member for tensile force buffer are inserted, the size of the seismic bearing device for structures can be reduced. Other claims 2-4
The same effect as any one of the above items is obtained.
【図１】本発明の実施形態に係る構造物用耐震支承装置
の正面図である。FIG. 1 is a front view of a structure seismic bearing device according to an embodiment of the present invention.
【図２】図２のII−II線断面図である。FIG. 2 is a sectional view taken along line II-II of FIG.
Ｓ 構造物用耐震支承装置 ８０ 橋桁（構造物） ８０ａ フランジ（構造物側板部材） ８１ 橋台（基礎構造） ８３ アンカーフレーム ８３ａ 頂板（基礎側板部材） ８４ 積層ゴム ８５ａ，８５ｂ 引張力緩衝用ゴム体 ８６ 連結ロッド ８８ａ，８８ｂ 上座板，下座板 S Seismic bearing device for structures 80 Bridge girder (structure) 80a Flange (structure side plate member) 81 Abutment (foundation structure) 83 Anchor frame 83a Top plate (foundation side plate member) 84 Laminated rubber 85a, 85b Rubber body for tensile force buffer 86 Connecting rod 88a, 88b Upper seat plate, lower seat plate
Claims (5)
た積層ゴムを介して構造物を基礎構造に耐震支承する装
置において、 前記積層ゴムの上面側と下面側の少なくとも一方に、積
層ゴムに直列的に配置され且つ構造物と基礎構造とを離
間させる引張力に対する緩衝機能を得る為の引張力緩衝
用ゴム体を設け、 この張力緩衝用ゴム体に対して直列的に引張力伝達用の
連結ロッドを設けたことを特徴とする構造物用耐震支承
装置。1. An apparatus for seismically mounting a structure to a basic structure via a laminated rubber in which a plurality of rubber plates and metal plates are alternately laminated, wherein at least one of an upper surface side and a lower surface side of the laminated rubber is laminated. A rubber member for tensile force buffering is provided in series with the rubber to obtain a buffering function against a tensile force for separating the structure from the basic structure, and a tensile force is transmitted in series to the rubber member for tension buffering. A seismic bearing device for a structure, comprising a connecting rod for use in a structure.
ム体を、積層ゴムの上端に載置される構造物側板部材の
上側に配置し、その引張力緩衝用ゴム体の上面に上座板
を設けるとともにこの上座板を前記連結ロッドにより基
礎構造に連結したことを特徴とする請求項１に記載の構
造物用耐震支承装置。2. A rubber member for tension buffering on an upper surface side of the laminated rubber is disposed above a structural side plate member mounted on an upper end of the laminated rubber, and an upper seat is provided on an upper surface of the rubber member for tension buffering. The seismic bearing device for a structure according to claim 1, wherein a plate is provided and the upper seat plate is connected to the foundation structure by the connecting rod.
ム体を、積層ゴムの下端を支持する基礎側板部材の下側
に配置し、その引張力緩衝用ゴム体の下面に下座板を設
けるとともにこの下座板を前記連結ロッドにより構造物
に連結したことを特徴とする請求項１又は２に記載の構
造物用耐震支承装置。3. A rubber member for lowering the tensile force on the lower surface side of the laminated rubber is disposed below a base plate member supporting a lower end of the laminated rubber, and a lower seat plate is provided on the lower surface of the rubber member for reducing the tensile force. The structure according to claim 1 or 2, wherein the lower seat plate is connected to the structure by the connecting rod.
に、前記引張力緩衝用ゴム体を設け、 前記積層ゴムの上面側の引張力緩衝用ゴム体を積層ゴム
の上端に載置される構造物側板部材の上側に配置し、そ
の引張力緩衝用ゴム体の上面に上座板を設け、前記積層
ゴムの下面側の引張力緩衝用ゴム体を積層ゴムの下端を
支持する基礎側板部材の下側に配置し、その引張力緩衝
用ゴム体の下面に下座板を設け、 前記上座板と下座板とが相離隔しないように前記連結ロ
ッドで連結したことを特徴とする請求項１に記載の構造
物用耐震支承装置。4. The rubber cushion for tensile force is provided on both the upper surface and the lower surface of the laminated rubber, and the rubber rubber for cushioning the tensile force on the upper surface of the laminated rubber is placed on the upper end of the laminated rubber. A base side plate member disposed above a structure side plate member to be provided, an upper seat plate provided on an upper surface of the tensile force buffering rubber body, and a tensile force buffering rubber body on a lower surface side of the laminated rubber supporting a lower end of the laminated rubber. The lower seat plate is provided on the lower surface of the rubber body for tensile force buffer, and the upper seat plate and the lower seat plate are connected by the connecting rod so as not to be separated from each other. 2. The seismic bearing device for structures according to 1.
引張力緩衝用ゴム体とを挿通させて配設されたことを特
徴とする請求項２〜４の何れか１項に記載の構造物用耐
震支承装置。5. The structural seismic device according to claim 2, wherein the connecting rod is disposed so that at least the laminated rubber and the rubber member for tensile force buffer are inserted through the connecting rod. Bearing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6826299A JPH11325177A (en) | 1999-03-15 | 1999-03-15 | Vibration resistant support device for structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6826299A JPH11325177A (en) | 1999-03-15 | 1999-03-15 | Vibration resistant support device for structure |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7352098A Division JP2930575B1 (en) | 1998-03-06 | 1998-03-06 | Shock-absorbing link for seismic structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11325177A true JPH11325177A (en) | 1999-11-26 |
Family
ID=13368676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6826299A Pending JPH11325177A (en) | 1999-03-15 | 1999-03-15 | Vibration resistant support device for structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11325177A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806097A (en) * | 2010-03-22 | 2010-08-18 | 北京工业大学 | Tensile prestress rubber earthquake isolation support |
| CN102493336A (en) * | 2011-12-07 | 2012-06-13 | 衡水宝力工程橡胶有限公司 | Drawing-resistant connecting device for support seat and manufacturing method of drawing-resistant connecting device |
| JP2013064477A (en) * | 2011-09-20 | 2013-04-11 | Ichijyo Home Building Co Ltd | Fail-safe device for base isolation structure and base isolation structure having the fail-safe device |
| CN106400979A (en) * | 2016-12-07 | 2017-02-15 | 北京工业大学 | Chute-type tensile seismic isolation device |
| CN106522376A (en) * | 2016-12-07 | 2017-03-22 | 北京工业大学 | Rotary type arc-shaped rail tensile earthquake insulation device |
| CN110904828A (en) * | 2019-11-14 | 2020-03-24 | 株洲时代新材料科技股份有限公司 | Anti-pulling damping vibration reduction and isolation support |
-
1999
- 1999-03-15 JP JP6826299A patent/JPH11325177A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806097A (en) * | 2010-03-22 | 2010-08-18 | 北京工业大学 | Tensile prestress rubber earthquake isolation support |
| JP2013064477A (en) * | 2011-09-20 | 2013-04-11 | Ichijyo Home Building Co Ltd | Fail-safe device for base isolation structure and base isolation structure having the fail-safe device |
| CN102493336A (en) * | 2011-12-07 | 2012-06-13 | 衡水宝力工程橡胶有限公司 | Drawing-resistant connecting device for support seat and manufacturing method of drawing-resistant connecting device |
| CN106400979A (en) * | 2016-12-07 | 2017-02-15 | 北京工业大学 | Chute-type tensile seismic isolation device |
| CN106522376A (en) * | 2016-12-07 | 2017-03-22 | 北京工业大学 | Rotary type arc-shaped rail tensile earthquake insulation device |
| CN110904828A (en) * | 2019-11-14 | 2020-03-24 | 株洲时代新材料科技股份有限公司 | Anti-pulling damping vibration reduction and isolation support |
| CN110904828B (en) * | 2019-11-14 | 2021-08-20 | 株洲时代新材料科技股份有限公司 | Anti-pulling damping vibration reduction and isolation support |
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