JP2005232680A - Bridge rubber laminated type damper device - Google Patents

Bridge rubber laminated type damper device Download PDF

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JP2005232680A
JP2005232680A JP2004039369A JP2004039369A JP2005232680A JP 2005232680 A JP2005232680 A JP 2005232680A JP 2004039369 A JP2004039369 A JP 2004039369A JP 2004039369 A JP2004039369 A JP 2004039369A JP 2005232680 A JP2005232680 A JP 2005232680A
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vertical load
damper device
sole plate
damping member
shear deformation
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JP4407307B2 (en
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Ichiro Kobayashi
一朗 小林
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a bridge rubber laminated type damper device having a simple and compact construction. <P>SOLUTION: On a base structure 1, the damper device 5 is installed which comprises a shearing deformation damping member 3 and vertical load supporting members 4. The shearing deformation damping member 3 has a plurality of hard plates 6 and rubber elastic plates 7 that are alternately laminated and an upper shoe 8 and a lower shoe 9 integrally provided on upper and lower parts thereof. The lower shoe 9 of the damper device 5 is fixed to the base structure 1 via a base plate 15 with a plurality of anchor bolts 10, and a sole plate 11 fixed to the lower part of a superstructure 2 is arranged at the upper parts of the vertical load supporting members 4 and the upper shoe 8. The vertical load supporting members 4 are arranged on both sides of the shearing deformation damping member 3 perpendicularly to a bridge axis. Their heights H are greater than the height h of the shearing deformation damping member 3 to form a gap S, preventing the vertical load of the superstructure 2 from acting directly on the shearing deformation damping member 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、橋梁用ゴム積層型ダンパー装置に係わり、更に詳しくは剪断変形減衰部材と、鉛直荷重支持部材とから成るダンパー装置において、上部構造物の回転を吸収しながら橋軸方向の剪断変形を与えるようにした橋梁用ゴム積層型ダンパー装置に関するものである。   The present invention relates to a rubber laminated damper device for a bridge. More specifically, in a damper device composed of a shear deformation damping member and a vertical load support member, shear deformation in the bridge axis direction is absorbed while absorbing the rotation of the upper structure. The present invention relates to a rubber laminated damper device for bridges.

従来、橋梁用ゴム積層型ダンパー装置の構造としては、橋脚または橋台等の下部構造物と橋桁のフランジ等の上部構造物との間に上部構造物の鉛直荷重を支持する鉛直荷重支持部材を設置し、フランジ等の上部構造物の両側面に硬質板とゴム状弾性板とを交互に積層して構成した剪断変形減衰部材を設置したものが知られている（例えば、特許文献１参照）。   Conventionally, as a rubber laminated damper device for bridges, a vertical load support member that supports the vertical load of the upper structure is installed between the lower structure such as the pier or abutment and the upper structure such as the flange of the bridge girder. And what installed the shear deformation attenuation | damping member comprised by alternately laminating | stacking a hard board and a rubber-like elastic board on the both sides | surfaces of superstructures, such as a flange, is known (for example, refer patent document 1).

このような従来の構造の場合、フランジ等の上部構造物の両側面に設置した剪断変形減衰部材に水平方向からの剪断荷重が作用すると、一方は圧縮荷重を受け、他方は引張り荷重を受けることになり、この引張り荷重は常時作用するため、ゴム積層型のダンパー装置の耐久性が低下すると言う問題があった。   In the case of such a conventional structure, when a shear load from the horizontal direction acts on the shear deformation damping members installed on both sides of the upper structure such as a flange, one receives a compressive load and the other receives a tensile load. Thus, since this tensile load always acts, there is a problem that the durability of the rubber laminated damper device is lowered.

また、上部構造物が水平方向に移動自在なように、その鉛直荷重を支持する滑り支承と、前記上部構造物の鉛直荷重を支持することなく、水平方向全方向に剪断変形して、前記上部構造物の水平荷重を支持する弾性体を有する水平荷重支持機構とを備えてなる機能分離型橋梁支承装置も提案されている（例えば、特許文献２参照）。   In addition, a sliding bearing that supports the vertical load so that the upper structure is movable in the horizontal direction, and the upper structure is subjected to shear deformation in all directions in the horizontal direction without supporting the vertical load of the upper structure. A function-separated bridge support device that includes a horizontal load support mechanism having an elastic body that supports the horizontal load of a structure has also been proposed (see, for example, Patent Document 2).

然しながら、このような水平荷重支持機構は、構造が複雑で大型化する傾向があり、これに伴って製造コストも高くなると言う問題があった。
特開２００１−１８２０１３号公報 特開２００２−３８４１８号公報 However, such a horizontal load support mechanism has a problem in that the structure is complicated and tends to increase in size, and the manufacturing cost increases accordingly.
JP 2001-182013 A JP 2002-38418 A

この発明はかかる従来の課題に着目し、鉛直荷重は鉛直荷重支持部材のみで受けるように構成することで、構造が簡単でコンパクトな装置にすることが出来る橋梁用ゴム積層型ダンパー装置を提供することを目的とするものである。   This invention pays attention to such a conventional problem, and provides a rubber laminated damper device for a bridge that can be made a compact device with a simple structure by configuring the vertical load to be received only by the vertical load support member. It is for the purpose.

この発明は、上記目的を達成するため、上部構造物の下部に固定されたソールプレートと下部構造物上に固定されたベースプレートとの間に、複数枚の硬質板とゴム状弾性板とを交互に積層させ、その上下部に上下沓を設けて一体的に構成した剪断変形減衰部材と、上部構造物の鉛直荷重を支持する鉛直荷重支持部材とを設置して成る橋梁用ゴム積層型ダンパー装置において、前記ソールプレートの下面と鉛直荷重支持部材の上面との間に、前記上部構造物の回転を吸収する回転吸収手段を介在させたことを要旨とするものである。   In order to achieve the above object, according to the present invention, a plurality of hard plates and rubber-like elastic plates are alternately arranged between a sole plate fixed to the lower part of the upper structure and a base plate fixed to the lower structure. A rubber laminated damper device for a bridge, in which a shear deformation attenuating member integrally formed by providing upper and lower ridges on the upper and lower portions and a vertical load supporting member for supporting the vertical load of the upper structure is installed. The present invention is summarized in that a rotation absorbing means for absorbing the rotation of the upper structure is interposed between the lower surface of the sole plate and the upper surface of the vertical load support member.

ここで、前記鉛直荷重支持部材の高さを前記剪断変形減衰部材の高さよりも高く形成し、上部構造物のソールプレートと前記剪断変形減衰部材の上沓との間に隙間を設けたものである。また、前記剪断変形減衰部材の上沓と上部構造物のソールプレートとを剪断キーにより係合して、上部構造物の水平方向の作用を剪断変形減衰部材の剪断変形のみで減衰させるように構成したものである。   Here, the height of the vertical load support member is formed higher than the height of the shear deformation attenuation member, and a gap is provided between the sole plate of the upper structure and the upper arm of the shear deformation attenuation member. is there. Further, the upper part of the shear deformation damping member and the sole plate of the upper structure are engaged by a shear key so that the horizontal action of the upper structure is attenuated only by the shear deformation of the shear deformation attenuation member. It is a thing.

更に、前記回転吸収手段は、鉛直荷重支持部材と上部構造物のソールプレートとの当接面を線または点接触する形状に構成すると共に、該当接面に摺動可能で、かつ耐摩耗性の硬質金属材料を使用してある。   Further, the rotation absorbing means is configured such that the contact surface between the vertical load support member and the sole plate of the superstructure is in a line or point contact shape, is slidable on the corresponding contact surface, and is wear resistant. Hard metal material is used.

このように、この発明にかかる橋梁用ゴム積層型ダンパー装置では、ソールプレートの下面と鉛直荷重支持部材の上面との間に、前記上部構造物の回転を吸収する回転吸収手段を介在させることで、鉛直荷重は鉛直荷重支持部材のみで受けるように構成し、剪断変形減衰部材に鉛直反力及び引っ張り力をかけずに上部構造物の回転を吸収しながら橋軸方向に剪断変形のみを与えるようにしたものである。   Thus, in the rubber laminated damper device for a bridge according to the present invention, the rotation absorbing means for absorbing the rotation of the upper structure is interposed between the lower surface of the sole plate and the upper surface of the vertical load support member. The vertical load is configured to be received only by the vertical load support member, and only the shear deformation is applied in the direction of the bridge axis while absorbing the rotation of the upper structure without applying the vertical reaction force and the tensile force to the shear deformation damping member. It is a thing.

この発明は上記のように、ソールプレートの下面と鉛直荷重支持部材の上面との間に、前記上部構造物の回転を吸収する回転吸収手段を介在させて構成したので、構造が簡単でコンパクトな装置にすることが出来、製造コストも安く、更に鉛直荷重は鉛直荷重支持部材のみで受けるように構成し、剪断変形減衰部材に鉛直反力及び引っ張り力をかけずに上部構造物の回転を吸収しながら橋軸方向に剪断変形のみを与えることが出来る効果がある。   As described above, since the present invention is constructed by interposing the rotation absorbing means for absorbing the rotation of the upper structure between the lower surface of the sole plate and the upper surface of the vertical load support member, the structure is simple and compact. It can be made into a device, the manufacturing cost is low, and the vertical load is received only by the vertical load support member, absorbing the rotation of the upper structure without applying vertical reaction force and tensile force to the shear deformation damping member However, there is an effect that only shear deformation can be given in the direction of the bridge axis.

以下、添付図面に基づき、この発明の実施形態を説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１は、この発明の実施形態を示す橋梁用ゴム積層型ダンパー装置の橋軸方向の正面図、図２は図１のＸ部を橋軸直角方向から見た説明図を示し、１は橋脚または橋台等の下部構造物、２は橋桁等の上部構造物を示し、下部構造物１上には、剪断変形減衰部材３と、上部構造物２の鉛直荷重を支持する鉄製のブロックから成る鉛直荷重支持部材４とから成るダンパー装置５が設置してある。   FIG. 1 is a front view in a bridge axis direction of a rubber laminated damper device for a bridge showing an embodiment of the present invention, FIG. 2 is an explanatory view of a portion X in FIG. Alternatively, a lower structure 2 such as an abutment 2 indicates an upper structure such as a bridge girder. A vertical structure comprising a shear deformation damping member 3 and an iron block that supports the vertical load of the upper structure 2 is provided on the lower structure 1. A damper device 5 comprising a load support member 4 is installed.

前記剪断変形減衰部材３は、複数枚の硬質板６とゴム状弾性板７とを交互に積層させ、その上下部には、上沓８と下沓９とが一体的に設けてある。前記ダンパー装置５の下沓９は、ボルトで固定されてベースプレート１５を介して下部構造物１に複数本のアンカーボルト１０により固定され、また前記鉛直荷重支持部材４と上沓８との上方には、上部構造物２の下部に固定されたソールプレート１１が配置されている。   The shear deformation attenuating member 3 has a plurality of hard plates 6 and rubber-like elastic plates 7 stacked alternately, and an upper collar 8 and a lower collar 9 are integrally provided at the upper and lower portions thereof. The lower rod 9 of the damper device 5 is fixed with bolts and fixed to the lower structure 1 with a plurality of anchor bolts 10 via the base plate 15, and above the vertical load support member 4 and the upper rod 8. The sole plate 11 fixed to the lower part of the upper structure 2 is arranged.

前記鉛直荷重支持部材４は、前記剪断変形減衰部材３の橋軸直角方向の両側に配置され、その高さＨを前記剪断変形減衰部材３の高さｈよりも高く形成して隙間Ｓを設け、上部構造物２の鉛直荷重が剪断変形減衰部材３に直接作用しないように構成してある。   The vertical load support members 4 are arranged on both sides of the shear deformation attenuation member 3 in the direction perpendicular to the bridge axis, and the height H is formed higher than the height h of the shear deformation attenuation member 3 to provide a gap S. The vertical load of the upper structure 2 is configured not to act directly on the shear deformation damping member 3.

また、前記剪断変形減衰部材３の上沓８と上部構造物２のソールプレート１１とは、上沓８とソールプレート１１との中央部に対向する位置に形成された剪断キー穴１２ａに嵌合する剪断キー１２が配置され、剪断キー穴１２ａと剪断キー１２の側面と上面との間に間隙１７が形成されることにより、上部構造物２の常時の微少な水平方向の移動、例えば、撓みによる回転、温度変化等による橋軸方向の伸縮を許容し、地震時の大きな水平方向の移動に伴う水平荷重が、上沓８とソールプレート１１とが剪断キー１２を介して係合することにより剪断変形減衰部材３に伝達され、剪断変形減衰部材３の変形により減衰できるように構成されている。   Further, the upper collar 8 of the shear deformation attenuating member 3 and the sole plate 11 of the upper structure 2 are fitted into a shear key hole 12a formed at a position facing the center of the upper collar 8 and the sole plate 11. And a gap 17 is formed between the shear key hole 12a and the side surface and the upper surface of the shear key 12, so that the upper structure 2 is always subjected to slight horizontal movement, for example, bending. The horizontal load caused by the large horizontal movement at the time of an earthquake is caused by the upper rod 8 and the sole plate 11 being engaged through the shear key 12 by allowing the bridge axis to expand and contract due to rotation, temperature change, etc. The shear deformation attenuation member 3 is transmitted to the shear deformation attenuation member 3 and can be attenuated by deformation of the shear deformation attenuation member 3.

また剪断変形減衰部材３の下沓９とベースプレート１５との中央部にも対向する位置に形成された剪断キー穴１２ａに嵌合する剪断キー１２が配置され、上記と同様に作用するものである。   In addition, a shear key 12 that fits into a shear key hole 12a formed at a position opposite to the center part of the lower collar 9 and the base plate 15 of the shear deformation attenuating member 3 is disposed and functions in the same manner as described above. .

前記上部構造物２のソールプレート１１と、前記鉛直荷重支持部材４との間には、前記上部構造物２の橋軸方向の回転を吸収する回転吸収手段１３が介在させてある。   Between the sole plate 11 of the upper structure 2 and the vertical load support member 4, a rotation absorbing means 13 for absorbing the rotation of the upper structure 2 in the bridge axis direction is interposed.

この発明の実施形態における前記回転吸収手段１３は、鉛直荷重支持部材４とソールプレート１１との当接面Ｇに、摺動可能で、かつ耐摩耗性の硬質金属材料１４ａ，１４ｂ（例えば、炭素鋼、ニッケルクロムモリブデン鋼等）が埋設してあり、また鉛直荷重支持部材４の上端当接部Ｇａは、図２に示すように、ソールプレート１１と線または点接触するように所定の半径Ｒの円弧状曲面に形成してある。   In the embodiment of the present invention, the rotation absorbing means 13 is slidable on the contact surface G between the vertical load support member 4 and the sole plate 11 and wear-resistant hard metal materials 14a and 14b (for example, carbon Steel, nickel chrome molybdenum steel, etc.), and the upper end contact portion Ga of the vertical load support member 4 has a predetermined radius R so as to be in line contact or point contact with the sole plate 11, as shown in FIG. It is formed in the arcuate curved surface.

このように構成することで、上部構造物２の鉛直荷重は常に鉛直荷重支持部材４で受け、また上部構造物２に水平方向の荷重が作用した場合、ソールプレート１１が鉛直荷重支持部材４の上端当接部Ｇａを円滑にスライドし、剪断変形減衰部材３には鉛直荷重が作用せず、剪断キー１２によりソールプレート１１に係合された剪断変形減衰部材３の剪断変形により水平荷重を減衰させるものである。   With this configuration, the vertical load of the upper structure 2 is always received by the vertical load support member 4, and when a horizontal load acts on the upper structure 2, the sole plate 11 is attached to the vertical load support member 4. The upper end contact portion Ga slides smoothly, and no vertical load acts on the shear deformation damping member 3, and the horizontal load is attenuated by the shear deformation of the shear deformation attenuation member 3 engaged with the sole plate 11 by the shear key 12. It is something to be made.

この発明の実施形態を示す橋梁用ゴム積層型ダンパー装置の橋軸方向の正面図である。It is a front view of the bridge axis direction of the rubber laminated damper device for bridges showing the embodiment of this invention. 図１のＸ部を橋軸直角方向から見た説明図である。It is explanatory drawing which looked at the X section of FIG. 1 from the bridge axis orthogonal direction.

符号の説明Explanation of symbols

１ 下部構造物 ２ 上部構造物
３ 剪断変形減衰部材 ４ 鉛直荷重支持部材
５ ダンパー装置 ６ 硬質板
７ ゴム状弾性板 ８ 上沓
９ 下沓
１１ ソールプレート １２ａ 剪断キー穴
１２ 剪断キー １３ 回転吸収手段
１４ａ，１４ｂ 耐摩耗性の硬質金属材料
１５ ベースプレート １７ 間隙 Ｇ 当接面
Ｇａ 鉛直荷重支持部材の上端当接部 Ｒ 半径
Ｈ 鉛直荷重支持部材の高さ ｈ 前記剪断変形減衰部材の高さ
Ｓ 隙間
DESCRIPTION OF SYMBOLS 1 Substructure 2 Upper structure 3 Shear deformation damping member 4 Vertical load support member 5 Damper device 6 Hard plate 7 Rubber-like elastic plate 8 Upper rod 9 Lower rod 11 Sole plate 12a Shear key hole 12 Shear key 13 Rotation absorbing means 14a , 14b Wear-resistant hard metal material 15 Base plate 17 Gap G Contact surface Ga Upper end contact portion of vertical load support member R Radius H Height of vertical load support member h Height of shear deformation damping member S Clearance

Claims (5)

上部構造物の下部に固定されたソールプレートと下部構造物上に固定されたベースプレートとの間に、複数枚の硬質板とゴム状弾性板とを交互に積層させ、その上下部に上下沓を設けて一体的に構成した剪断変形減衰部材と、上部構造物の鉛直荷重を支持する鉛直荷重支持部材とを設置して成る橋梁用ゴム積層型ダンパー装置において、 前記ソールプレートの下面と鉛直荷重支持部材の上面との間に、前記上部構造物の回転を吸収する回転吸収手段を介在させたことを特徴とする橋梁用ゴム積層型ダンパー装置。 Between the sole plate fixed to the lower part of the upper structure and the base plate fixed to the lower structure, a plurality of hard plates and rubber-like elastic plates are alternately laminated, and upper and lower ridges are formed on the upper and lower parts thereof. In a rubber laminated damper device for a bridge, in which a shear deformation damping member provided integrally and a vertical load support member for supporting a vertical load of an upper structure are installed, the bottom surface of the sole plate and a vertical load support are provided. A rubber laminated damper device for bridges, characterized in that a rotation absorbing means for absorbing the rotation of the superstructure is interposed between the upper surface of the members. 前記鉛直荷重支持部材の高さを前記剪断変形減衰部材の高さよりも高く形成し、上部構造物のソールプレートと前記剪断変形減衰部材の上沓との間に隙間を設けた請求項１に記載の橋梁用ゴム積層型ダンパー装置。 The height of the said vertical load support member is formed higher than the height of the said shear deformation damping member, The clearance gap was provided between the sole plate of the upper structure, and the upper arm of the shear deformation damping member. Rubber laminated damper device for bridges. 前記剪断変形減衰部材の上沓と上部構造物のソールプレートとを剪断キーにより係合した請求項１または２に記載の橋梁用ゴム積層型ダンパー装置。 The rubber laminated damper device for a bridge according to claim 1 or 2, wherein an upper arm of the shear deformation damping member and a sole plate of an upper structure are engaged by a shear key. 前記回転吸収手段は、鉛直荷重支持部材と上部構造物のソールプレートとの当接面を線または点接触する形状に構成した請求項１，２または３に記載の橋梁用ゴム積層型ダンパー装置。 4. The rubber laminated damper device for a bridge according to claim 1, wherein the rotation absorbing means is formed in a shape in which a contact surface between the vertical load support member and the sole plate of the superstructure is in line or point contact. 前記回転吸収手段は、鉛直荷重支持部材と上部構造物のソールプレートとの当接面において摺動可能で、かつ耐摩耗性の硬質金属材料を使用した請求項１，２，３または４に記載の橋梁用ゴム積層型ダンパー装置。

The said rotation absorption means is slidable in the contact surface of a vertical load support member and the sole plate of an upper structure, and uses the hard metal material of abrasion resistance, Claim 1, 2, 3 or 4 Rubber laminated damper device for bridges.

JP2004039369A 2004-02-17 2004-02-17 Rubber laminated damper device for bridges Expired - Fee Related JP4407307B2 (en)

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* Cited by examiner, † Cited by third party
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CN109722986A (en) * 2018-12-11 2019-05-07 九江职业技术学院 A kind of pivoting friction damping support device

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Publication number Priority date Publication date Assignee Title
CN102912724B (en) * 2012-11-15 2014-08-06 成都宝路通桥梁科技有限公司 Shock insulation support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109722986A (en) * 2018-12-11 2019-05-07 九江职业技术学院 A kind of pivoting friction damping support device
CN109722986B (en) * 2018-12-11 2020-09-01 九江职业技术学院 Rotary friction damping shock-absorbing support device

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