JPH0352809Y2 - - Google Patents
Info
- Publication number
- JPH0352809Y2 JPH0352809Y2 JP19713286U JP19713286U JPH0352809Y2 JP H0352809 Y2 JPH0352809 Y2 JP H0352809Y2 JP 19713286 U JP19713286 U JP 19713286U JP 19713286 U JP19713286 U JP 19713286U JP H0352809 Y2 JPH0352809 Y2 JP H0352809Y2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- force
- plate
- rubber support
- girder
- 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
Links
- 229920001971 elastomer Polymers 0.000 claims description 57
- 238000013016 damping Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案は連続桁橋等に設置されるゴム支承構
造の改良に関するものである。[Detailed description of the invention] Industrial application field This invention relates to the improvement of rubber bearing structures installed in continuous girder bridges, etc.
従来の技術
連続桁橋において地震時等の水平力を分散させ
る目的として用いられるゴム支承構造は、第８図
に示すように橋脚にアンカボルトと共に埋込まれ
た下沓Ｂと橋桁下に埋込まれたアンカボルトと共
に設けられた上沓Ｃとの間に、ネオプレンゴムの
如き弾性体ｂと金属の補強板ｃとを複数層に積層
し、該積層した弾性体ｂと金属補強板ｃとを一体
に成形したゴム支承板ａに形成し配設した構造よ
りなるものである。Conventional technology Rubber bearing structures used for the purpose of dispersing horizontal forces during earthquakes in continuous girder bridges consist of lower shoes B embedded in the piers together with anchor bolts and under the bridge girders, as shown in Figure 8. An elastic body b such as neoprene rubber and a metal reinforcing plate c are laminated in multiple layers between the upper shoe C provided with the anchor bolt, and the laminated elastic body b and metal reinforcing plate c are It has a structure in which it is formed and arranged on a rubber support plate a that is integrally molded.
このゴム支承構造体Ａを第７図に示す様に連続
桁橋の橋脚Ｄ（Ｐ１〜Ｐ４）と桁Ｅとの間に設置
使用しているものである。 As shown in FIG. 7, this rubber bearing structure A is installed between piers D (P1 to P4) and girders E of a continuous girder bridge.
考案が解決しようとする問題点
上記第７図に示す様な連続桁橋において、地震
時の水平力を分散させる目的で用いられている従
前のゴム支承板ａは半固定されていて、第７図に
示す連続桁橋が気温の上昇により桁Ｅの長さ方向
に橋脚ＤのＰ１でΔ２、橋脚ＤのＰ２でΔ１だけ
伸びた場合に、ゴム支承板ａは、第８図の破線で
示す様にΔ２またはΔ１だけせん断変形し、この
せん断変形によつて橋脚にはF2，F1のせん断抵
抗力が作用することになる。この状態において地
震による水平力Ｈが作用したときに橋脚には、こ
の反力としてｈが作用する。これらの水平力によ
る反力の和は橋脚Ｐ１ではｈ＋F2、橋脚Ｐ４で
はｈ−F2となり均等に分散されない問題点があ
り、また桁Ｅの伸縮量が０の場合F2，F1は０と
なるので地震の水平力は均一となるがゴム支承ａ
のせん断変形による抵抗力が小さく桁Ｅを固定す
る機能が低下する問題点がある。Problems to be solved by the invention In a continuous girder bridge like the one shown in Figure 7 above, the conventional rubber support plate a used for the purpose of dispersing the horizontal force during an earthquake is semi-fixed. When the continuous girder bridge shown in the figure extends in the length direction of the girder E by Δ2 at P1 of pier D and by Δ1 at P2 of pier D, the rubber support plate a will be extended as shown by the broken line in FIG. Similarly, shear deformation occurs by Δ2 or Δ1, and due to this shear deformation, shear resistance forces of F 2 and F 1 act on the pier. In this state, when a horizontal force H due to an earthquake acts, h acts on the pier as a reaction force. The sum of the reaction forces due to these horizontal forces is h + F 2 at pier P1 and h - F 2 at pier P4, which has the problem that they are not evenly distributed, and if the amount of expansion and contraction of girder E is 0, F 2 and F 1 are 0. Therefore, the horizontal force of the earthquake is uniform, but the rubber bearing a
There is a problem that the resistance force due to shear deformation is small and the function of fixing the girder E is reduced.
問題点を解決するための手段
この考案は桁Ｅの伸縮時の抵抗力を少なくする
と共に地震時における減衰機能を兼ね備えたゴム
支承構造を提供することを目的とするものであ
る。Means for Solving the Problems The purpose of this invention is to provide a rubber bearing structure that reduces the resistance force when the girder E expands and contracts, and also has a damping function during earthquakes.
この考案はゴム支承構造に於いて、ゴム支承板
を三個一組のゴム沓に形成し、該ゴム沓の中央に
位置するゴム沓の上面に摩さつ板を設けたゴム沓
に形成したゴム支承構造としたことである。 This invention has a rubber support structure in which the rubber support plate is formed into a set of three rubber shoes, and the rubber shoe is formed into a rubber shoe with a grinding plate provided on the upper surface of the rubber shoe located in the center of the rubber shoe. It has a rubber support structure.
作 用
この考案は三個一組のゴム沓にて形成したゴム
支承板のうち左右に位置するゴム沓は、在来のゴ
ム沓と同様の緩衝機能を有し、中央部のゴム沓は
上面に摩さつ板を有するために減衰機能を有する
ので桁の伸縮時の抵抗力を少なくし、また地震時
における減衰機能を発揮することができる。Function In this device, the rubber shoes located on the left and right sides of the rubber support plate formed by a set of three rubber shoes have the same buffering function as conventional rubber shoes, and the rubber shoes in the center have the upper surface. Since the girder has a polished board, it has a damping function, which reduces the resistance force when the girder expands and contracts, and also provides a damping function during an earthquake.
実施例
この考案の一実施例を第１図〜第３図に示す図
面により説明すると橋脚ＤにアンカボルトＦと共
に埋設されるベースプレート部１と一体に形成さ
れた下沓２とアンカーボルドＧによつて橋桁Ｅに
取付けられた上沓３間に配設されるゴム支承板
を、従来のゴム支承板と同様にネオプレンゴム４
ａと補強用金属板４ｂとを複数層に積層一体形成
する支承板とし、該支承板を縦割りに三分割し
て、左側ゴム支承部５、中央ゴム支承部６、右側
ゴム支承部７からなる三個一組の支承板４に形成
すると共に中央ゴム支承部６は、その上端面にテ
フロン（登録商標）、固体潤滑剤を埋設した銅合
金、或はレジンアスベスト等からなる摩さつ板８
を埋設してなる支承部材に形成し、これら三個一
組からなるゴム支承板を前記上沓３と下沓２間に
配設支持させるものであるが、中央ゴム支承部６
の摩さつ板８は上沓３の下面に設けられているス
テンレス板等にて形成されているすべり面に当接
するように設けて成るものである。Embodiment An embodiment of this invention will be explained with reference to the drawings shown in Figs. The rubber support plate disposed between the upper shoes 3 attached to the bridge girder E is
A and a reinforcing metal plate 4b are laminated and integrally formed in multiple layers as a support plate, and the support plate is vertically divided into three parts, from the left side rubber support part 5, the center rubber support part 6, and the right side rubber support part 7. The central rubber bearing part 6 is a grinding plate made of copper alloy, resin asbestos, etc. with Teflon (registered trademark) or solid lubricant embedded in its upper end surface. 8
A rubber support plate consisting of a set of three pieces is disposed and supported between the upper shoe 3 and the lower shoe 2, and the central rubber support part 6
The grinding plate 8 is provided so as to come into contact with a sliding surface formed of a stainless steel plate or the like provided on the lower surface of the upper shoe 3.
そしてゴム支承部分を三分割して左右のゴム支
承部５，７を在来のゴム支承と同形とし、三分割
したうちの中央のゴム支承部６には摩さつ板８を
設けた構造とし、該摩さつ板を介して上沓３に接
しさせ、これらの５，６，７の支承部で１支承の
反力を支承するものであり、５，７及び６の支承
部は水平力の大きさや桁の伸縮量に応じてばねの
強さや大きさを決めるものである。 Then, the rubber bearing part is divided into three parts, the left and right rubber bearing parts 5 and 7 are made the same shape as the conventional rubber bearing, and the rubber bearing part 6 in the middle of the three parts is provided with a grinding plate 8. , is brought into contact with the upper shoe 3 through the grinding plate, and these bearing parts 5, 6, and 7 support one bearing's reaction force, and the bearing parts 5, 7, and 6 support the horizontal force. The strength and size of the spring are determined according to the size of the spring and the amount of expansion and contraction of the girder.
また摩さつ板８は水平力の分散の割合や減衰の
割合によつて摩さつ係数や大きさを設定するもの
である。 Furthermore, the grinding coefficient and size of the grinding plate 8 are set according to the dispersion rate and attenuation rate of horizontal force.
なお、ゴム支承部５，７のせん断抵抗力と変形
量の関係を示せば、第４図のようになり、ゴム支
承部６と摩さつ板８の組合せによる特性は第５図
のようになり、これらの合成力は第６図のような
特性となるものである。 The relationship between the shear resistance force and the amount of deformation of the rubber bearings 5 and 7 is shown in Fig. 4, and the characteristics of the combination of the rubber bearings 6 and the grinding plate 8 are shown in Fig. 5. The resultant force has the characteristics shown in Figure 6.
さらに水平力の分散および減衰効果は第５図に
示す摩さつ力によつて支配されるので摩さつ板８
の摩さつ係数とゴム支承部６の沿直力の分担割合
によつて任意に設定が可能である。 Furthermore, since the dispersion and damping effect of the horizontal force is controlled by the grinding force shown in FIG.
It can be arbitrarily set depending on the friction coefficient and the sharing ratio of the vertical force of the rubber bearing part 6.
考案の効果
この考案は上述の如く従来のゴム支承の有する
緩衝機能に摩さつ力による減衰機能を持たせたこ
とによつて鉛直荷重は各ゴム支承部が分担するた
め、ゴム支承部５，７のせん断変形抵抗力を少さ
くすることができ、またゴム支承部６の摩さつ力
は一定となり、各橋脚への分散効果を大ならしめ
ることができる。Effects of the invention As mentioned above, this invention adds the damping function by friction force to the buffering function of the conventional rubber bearing, so that the vertical load is shared by each rubber bearing. The shear deformation resistance of the rubber support 6 can be reduced, and the abrasion force of the rubber bearing 6 can be kept constant, making it possible to increase the dispersion effect to each pier.
なお摩さつ板は、水平力の分担の割合に応じて
ゴム支承部の鉛直力と摩さつ板（摩さつ係数）と
の組合せで摩さつ力を自由に設定できる効果を有
するものである。 The polishing board has the effect of freely setting the polishing force by combining the vertical force of the rubber support and the polishing plate (grinding coefficient) according to the proportion of horizontal force sharing. It is.
図はこの考案の一実施例を示すものにして、第
１図はゴム支承構造の一部断面正面図、第２図は
同側面図、第３図は第１図の中央横断面図、第４
図は左右ゴム支承部の作用図、第５図は中央ゴム
支承部の作用図、第６図は左右ゴム支承部と中央
ゴム支承部との合成作用図、第７図は連続桁橋に
於けるゴム支承構造の作用状態図、第８図は従来
の支承構造の断面正面図、第９図は第８図の中央
横断面図である。
４……ゴム支承部、４ａ……弾性ゴム、４ｂ…
…補強用金属板、５……左側ゴム支承部、６……
中央ゴム支承部、７……右側ゴム支承部、８……
摩さつ板。
The figures show one embodiment of this invention, in which Fig. 1 is a partially sectional front view of the rubber bearing structure, Fig. 2 is a side view of the same, and Fig. 3 is a central cross-sectional view of Fig. 1. 4
The figure shows the action diagram of the left and right rubber bearings, Figure 5 shows the action diagram of the central rubber bearing part, Figure 6 shows the composite action diagram of the left and right rubber bearing parts and the central rubber bearing part, and Figure 7 shows the action of the continuous girder bridge. FIG. 8 is a cross-sectional front view of the conventional bearing structure, and FIG. 9 is a cross-sectional view of the center of FIG. 8. 4...Rubber bearing part, 4a...Elastic rubber, 4b...
...Reinforcing metal plate, 5...Left side rubber support, 6...
Central rubber bearing part, 7...Right side rubber bearing part, 8...
Laminated board.
Claims (1)
置されるゴム支承構造のゴム支承板に於て、該ゴ
ム支承板を三個一組のゴム沓に形成し、該ゴム沓
の中央部に配されるゴム沓の上面に摩さつ板を組
込んだことを特徴とするゴム支承構造。 In a rubber support plate of a rubber support structure installed between the structure and the foundation floor of a structure such as a bridge, the rubber support plate is formed into a set of three rubber shoes, and the center of the rubber shoe is A rubber support structure characterized by incorporating a grinding board on the top surface of the rubber shoe placed in the section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19713286U JPH0352809Y2 (en) | 1986-12-22 | 1986-12-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19713286U JPH0352809Y2 (en) | 1986-12-22 | 1986-12-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63104415U JPS63104415U (en) | 1988-07-06 |
| JPH0352809Y2 true JPH0352809Y2 (en) | 1991-11-18 |
Family
ID=31156578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19713286U Expired JPH0352809Y2 (en) | 1986-12-22 | 1986-12-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352809Y2 (en) |
-
1986
- 1986-12-22 JP JP19713286U patent/JPH0352809Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63104415U (en) | 1988-07-06 |
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