JP2002250008A - Laminated rubber support and fixing structure of the same support to structure - Google Patents
Laminated rubber support and fixing structure of the same support to structureInfo
- Publication number
- JP2002250008A JP2002250008A JP2001050696A JP2001050696A JP2002250008A JP 2002250008 A JP2002250008 A JP 2002250008A JP 2001050696 A JP2001050696 A JP 2001050696A JP 2001050696 A JP2001050696 A JP 2001050696A JP 2002250008 A JP2002250008 A JP 2002250008A
- Authority
- JP
- Japan
- Prior art keywords
- coupler
- laminated rubber
- steel plate
- rubber bearing
- lower steel
- 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.)
- Granted
Links
Landscapes
- Bridges Or Land Bridges (AREA)
- Connection Of Plates (AREA)
- Vibration Prevention Devices (AREA)
- Springs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、積層ゴム支承及
び該支承の構造物への固定構造に関し、さらに詳細に
は、橋梁において上部構造と下部構造との間に設置され
る積層ゴム支承に関する。The present invention relates to a laminated rubber bearing and a structure for fixing the bearing to a structure, and more particularly to a laminated rubber bearing installed between an upper structure and a lower structure in a bridge.
【０００２】[0002]
【従来の技術】橋梁において水平力分散支承として広く
知られている積層ゴム支承は、一般に、図９に示すよう
な構造をしている。すなわち、積層ゴム支承５０は、上
部鋼板５４と下部鋼板５５との間にゴム層５６と中間部
鋼板５７とを交互に積層してなるゴム支承本体５１と、
その上下部にボルト６０により固定される上沓５８及び
下沓５９とからなっている。2. Description of the Related Art A laminated rubber bearing, which is widely known as a horizontal force distribution bearing in a bridge, generally has a structure as shown in FIG. That is, the laminated rubber bearing 50 includes a rubber bearing main body 51 in which a rubber layer 56 and an intermediate steel plate 57 are alternately laminated between an upper steel plate 54 and a lower steel plate 55;
The upper and lower parts are composed of an upper shoe 58 and a lower shoe 59 fixed by bolts 60.
【０００３】そして、この積層ゴム支承５０は上部構造
５２の下面にアンカーバー６１を介して固定されたソー
ルプレート６２に上沓５８がボルト６３により固定され
る。また、下部構造５３の上面にアンカーボルト６４を
介して固定されたベースプレート６５に下沓５９がボル
ト６６により固定され、このようにして積層ゴム支承５
０が上下部構造５２，５３間に設置される。なお、せん
断キー６７，６８は、ゴム支承本体５１と上沓５８及び
下沓５９との間で水平力を伝達するためのものである。[0003] In this laminated rubber bearing 50, an upper shoe 58 is fixed by bolts 63 to a sole plate 62 fixed to the lower surface of an upper structure 52 via an anchor bar 61. Further, the lower shoe 59 is fixed to the base plate 65 fixed to the upper surface of the lower structure 53 via the anchor bolt 64 by the bolt 66, and thus the laminated rubber bearing 5 is provided.
0 is provided between the upper and lower structures 52 and 53. The shear keys 67 and 68 are for transmitting a horizontal force between the rubber bearing main body 51 and the upper and lower shoes 58 and 59.
【０００４】このような支承の固定構造は、ゴム支承の
交換を考慮したためであるが、上沓及び下沓を必要とす
るため重量が増え、また穴加工が多くなるためコスト高
となる。そこで、支承の取り替えを考慮しないこととし
て上沓及び下沓を無くしたゴム支承も提案されている。[0004] Such a fixing structure of the bearing is intended for replacement of the rubber bearing, but requires an upper and lower shoe, which increases the weight and increases the number of holes, resulting in an increase in cost. Therefore, rubber bearings without upper and lower shoes have been proposed as not considering replacement of the bearings.
【０００５】しかし、この場合、次の問題が生じる。す
なわち、アンカーボルトを直接下部鋼板にねじ込む構造
とすると、下部鋼板は必要ねじ長さ分（アンカーボルト
のねじ径× 0.8mm 以上）の板厚が必要となり、アンカ
ーボルトは通常、径が大きいので、板厚も厚くなり製造
コストが高くなる。However, in this case, the following problem occurs. In other words, if the anchor bolt is directly screwed into the lower steel plate, the lower steel plate must have the required screw length (the screw diameter of the anchor bolt x 0.8 mm or more), and the diameter of the anchor bolt is usually large. The plate thickness also increases, and the manufacturing cost increases.
【０００６】[0006]
【発明が解決しようとする課題】この発明は上記のよう
な技術的背景に基づいてなされたものであって、次の目
的を達成するものである。この発明の目的は、重量の軽
量化を図るとともに、加工工数を少なくしてコストの低
減を図ることができる積層ゴム支承及び該支承の構造物
への固定構造を提供することにある。この発明の別の目
的は、上記目的に加えて交換を容易に行うことができる
積層ゴム支承及び該支承の構造物への固定構造を提供す
ることにある。SUMMARY OF THE INVENTION The present invention has been made on the basis of the above technical background, and has the following objects. SUMMARY OF THE INVENTION An object of the present invention is to provide a laminated rubber bearing and a structure for fixing the bearing to a structure, which can reduce the weight and reduce the number of processing steps to reduce the cost. Another object of the present invention is to provide a laminated rubber bearing which can be easily replaced in addition to the above-mentioned objects, and a structure for fixing the bearing to a structure.
【０００７】[0007]
【課題を解決するための手段】この発明は上記課題を達
成するために、次のような手段を採用している。すなわ
ち、この発明は、上下端に上下部鋼板を有し、これら上
下部鋼板間にそれぞれ複数のゴム層と中間部鋼板とが交
互に積層されてなる積層ゴム支承であって、前記下部鋼
板に設けた複数の取付孔に、内周にねじが形成された筒
状のカプラーが挿入固定され、これらのカプラーは前記
取付孔から下方に突出する突出部を有していることを特
徴とする積層ゴム支承にある。The present invention employs the following means to achieve the above object. That is, the present invention is a laminated rubber bearing having upper and lower steel plates at the upper and lower ends, and a plurality of rubber layers and an intermediate steel plate are alternately laminated between the upper and lower steel plates. A cylindrical coupler having a thread formed on an inner periphery thereof is inserted and fixed in a plurality of mounting holes provided, and these couplers have a protrusion protruding downward from the mounting hole. On rubber bearings.
【０００８】より具体的には、前記カプラーの外周及び
前記取付孔の内周には互いに係合する段付き部がそれぞ
れ設けられている。あるいは、前記カプラーの前記突出
部外周には前記下部鋼板の下面と係合する段付き部が設
けられている。前記カプラーには内周に段付き部を有
し、かつ外周にねじが形成された保持リングが螺着さ
れ、この保持リングの内部に前記段付き部に支持されて
内ナットが収容されている態様としてもよい。More specifically, stepped portions are provided on the outer periphery of the coupler and the inner periphery of the mounting hole to engage with each other. Alternatively, a stepped portion that engages with the lower surface of the lower steel plate is provided on the outer periphery of the projecting portion of the coupler. The coupler has a stepped portion on the inner periphery, and a retaining ring having a thread formed on the outer periphery is screwed into the coupler, and the inner nut is housed inside the retaining ring supported by the stepped portion. It is good also as an aspect.
【０００９】また、この発明は、上部構造と下部構造と
の間に固定設置され、上下端に上下部鋼板を有し、これ
ら上下部鋼板間にそれぞれ複数のゴム層と中間部鋼板と
が交互に積層されてなる積層ゴム支承の固定構造であっ
て、前記下部鋼板に設けた複数の取付孔に、内周にねじ
が形成された筒状のカプラーが挿入固定され、これらの
カプラーは前記取付孔から下方に突出する突出部を有
し、前記下部鋼板は、前記カプラーに螺着されて前記下
部構造に埋設されるアンカーボルトにより該下部構造に
固定されることを特徴とする積層ゴム支承の固定構造に
ある。Further, the present invention is characterized in that the steel plate is fixedly installed between an upper structure and a lower structure, and has upper and lower steel plates at upper and lower ends, and a plurality of rubber layers and intermediate steel plates are alternately provided between the upper and lower steel plates. A fixed structure of a laminated rubber bearing laminated on the lower steel plate, a plurality of mounting holes provided in the lower steel plate, a tubular coupler having a screw formed on the inner periphery is inserted and fixed, and these couplers are attached to the mounting plate A lower rubber plate having a projection projecting downward from the hole, wherein the lower steel plate is fixed to the lower structure by an anchor bolt screwed into the coupler and embedded in the lower structure. In the fixed structure.
【００１０】より具体的には、前記上部鋼板は前記上部
構造に固定されたソールプレートに着脱自在に固定され
る。前記カプラーの外周及び前記取付孔の内周には互い
に係合する段つ付き部がそれぞれ設けられている。ある
いは、前記カプラーの前記突出部外周には前記下部鋼板
の下面と係合する段付き部が設けられている。前記カプ
ラーには内周に段付き部を有し、かつ外周にねじが形成
された保持リングが螺着され、この保持リングの内部に
前記段付き部に支持されて内ナットが収容され、この内
ナットに前記アンカーボルトが螺着されている態様とし
てもよい。More specifically, the upper steel plate is detachably fixed to a sole plate fixed to the upper structure. The outer periphery of the coupler and the inner periphery of the mounting hole are provided with stepped portions that engage with each other. Alternatively, a stepped portion that engages with the lower surface of the lower steel plate is provided on the outer periphery of the projecting portion of the coupler. The coupler has a stepped portion on the inner periphery, and a retaining ring having a thread formed on the outer periphery is screwed into the coupler, and an inner nut is accommodated inside the retaining ring while being supported by the stepped portion. The anchor bolt may be screwed to the inner nut.
【００１１】この発明においては、アンカーボルトを下
部鋼板に直接固定するのではなく、下部鋼板に装着した
カプラーを介して固定する。このため、アンカーボルト
の必要ねじ長さは、カプラーの長さで調節することがで
きるので、下部鋼板を薄くすることができ、積層ゴム支
承全体の重量の軽減化を図ることができる。そして、こ
のような目的のために用いられるカプラーは、その取付
孔から突出する突出部を持つこととなるので、この突出
部は工場出荷時のせん断試験用のせん断キーとして利用
することができる。In the present invention, the anchor bolt is not directly fixed to the lower steel plate, but is fixed via a coupler mounted on the lower steel plate. Therefore, the required screw length of the anchor bolt can be adjusted by the length of the coupler, so that the lower steel plate can be made thinner, and the weight of the entire laminated rubber bearing can be reduced. Since the coupler used for such a purpose has a protrusion protruding from the mounting hole, the protrusion can be used as a shear key for a shear test at the time of factory shipment.
【００１２】[0012]
【発明の実施の形態】この発明の実施の形態を図面を参
照しながら以下に説明する。図１は、この発明の実施の
形態を示す橋軸方向に沿う断面図であり、図２は図１の
Ａ−Ａ線断面図である。積層ゴム支承１は、橋梁におけ
る上部構造２と下部構造３との間に設置され、この実施
の形態では上部構造２としてコンクリート桁（ＲＣ桁あ
るいはＰＣ桁）が示され、下部構造３としてコンクリー
ト橋脚が示されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view along the bridge axis direction showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. The laminated rubber bearing 1 is installed between an upper structure 2 and a lower structure 3 in a bridge. In this embodiment, a concrete girder (RC girder or PC girder) is shown as the upper structure 2 and a concrete pier as the lower structure 3. It is shown.
【００１３】積層ゴム支承１は、それぞれ厚肉の上部鋼
板４と下部鋼板５とを有し、これらの上下部鋼板４，５
間にそれぞれ複数のゴム層６と薄肉の中間部鋼板７とを
交互に積層して形成されている。上下部鋼板４，５、ゴ
ム層６及び中間部鋼板７は、加硫接着により一体成形さ
れている。ゴム層６のゴム材料としては、従来の積層ゴ
ム支承と同様に、天然ゴム、クロロプレンゴム、天然ゴ
ムに減衰性を付加した高減衰ゴム等を使用することがで
きる。The laminated rubber bearing 1 has a thick upper steel plate 4 and a lower steel plate 5, respectively.
A plurality of rubber layers 6 and a thin intermediate steel plate 7 are alternately stacked therebetween. The upper and lower steel plates 4, 5, the rubber layer 6, and the intermediate steel plate 7 are integrally formed by vulcanization bonding. As the rubber material of the rubber layer 6, like the conventional laminated rubber bearing, natural rubber, chloroprene rubber, high damping rubber obtained by adding a damping property to natural rubber, or the like can be used.
【００１４】上部鋼板４はゴム層６と中間部鋼板７とが
積層されている積層ゴム部から外周に張り出すフランジ
タイプのものとなっていて、上面にはせん断キー８を嵌
合するための凹部９が形成されている。下部鋼板５は中
間部鋼板７と外形寸法が同じものとなっていて、複数の
カプラー取付孔１０が設けられ、これらの取付孔１０に
筒状のカプラー１１が挿入固定されている。The upper steel plate 4 is of a flange type projecting to the outer periphery from a laminated rubber portion in which a rubber layer 6 and an intermediate steel plate 7 are laminated, and has an upper surface for fitting a shear key 8. A recess 9 is formed. The lower steel plate 5 has the same outer dimensions as the intermediate steel plate 7, is provided with a plurality of coupler mounting holes 10, and a cylindrical coupler 11 is inserted and fixed in these mounting holes 10.
【００１５】図３はカプラー１１の取付状態を拡大して
示す断面図である。図３に示すカプラー１１は内周にね
じ１２が形成された袋状のもので、上部外周には環状の
段付き部１３が形成されている。他方、取付孔１０の内
周にも環状の段付き部１４が形成され、カプラー１１は
取付孔１０に挿入された状態で、両者の段付き部１３，
１４が互いに係合するようになっている。また、カプラ
ー１１は取付孔１０に挿入された状態で、取付孔１０か
ら下方に突出する突出部１５を有している。これによ
り、カプラー１１のねじ１２の長さとして、これに螺着
されるアンカーボルト１６のねじ１７の長さに対応する
必要ねじ長さを確保することが可能となっている。FIG. 3 is an enlarged sectional view showing an attached state of the coupler 11. The coupler 11 shown in FIG. 3 is a bag-shaped one in which a screw 12 is formed on the inner periphery, and an annular stepped portion 13 is formed on the upper outer periphery. On the other hand, an annular stepped portion 14 is also formed on the inner periphery of the mounting hole 10, and the coupler 11 is inserted into the mounting hole 10 while the stepped portions 13 and
14 engage each other. Further, the coupler 11 has a protruding portion 15 that protrudes downward from the mounting hole 10 when inserted into the mounting hole 10. This makes it possible to secure a required screw length corresponding to the length of the screw 17 of the anchor bolt 16 screwed to the coupler 12 as the length of the screw 12 of the coupler 11.
【００１６】カプラー１１はその上端外周が下部鋼板５
に溶接１８により固着されている。この場合、後述する
ように積層ゴム支承に作用する上揚力は段付き部１３，
１４を介して伝達されるので、溶接代はカプラー１１と
アンカーボルト１６との回り止めのみを考慮したものと
すればよく、したがって下部鋼板５に溶接による歪みが
発生するのを最小限に抑えることができる。なお、図示
の例では溶接１８のための開先加工をカプラー１１に施
してあるが、下部鋼板５に施してもよい（他図に示す例
も同様）。The outer periphery of the upper end of the coupler 11 has a lower steel plate 5.
Are fixed by welding 18. In this case, as described later, the upward lift acting on the laminated rubber bearing is applied to the stepped portion 13,
Since the power is transmitted through the base 14, the welding margin may be limited to the rotation of the coupler 11 and the anchor bolt 16 only. Therefore, it is possible to minimize the occurrence of welding distortion in the lower steel plate 5. Can be. In the illustrated example, the groove processing for the welding 18 is performed on the coupler 11, but may be performed on the lower steel plate 5 (the same applies to the examples illustrated in other drawings).
【００１７】上記積層ゴム支承１は次のようにして、上
部構造２及び下部構造３に固定される。再び図１を参照
し、上部構造２の下面にはソールプレート２０が複数の
アンカーバー２１により固定されている。ソールプレー
ト２０の下面には凹部２２が形成され、この凹部２２に
せん断キー８が嵌合した状態で、上部鋼板４はボルト２
３によりソールプレート２０に固定される。他方、下部
鋼板５は、カプラー１１に螺着されたアンカーボルト１
６が下部構造３のコンクリート打設の際に埋め込まれる
ことにより、該下部構造３に固定される。The laminated rubber bearing 1 is fixed to the upper structure 2 and the lower structure 3 as follows. Referring to FIG. 1 again, a sole plate 20 is fixed to a lower surface of the upper structure 2 by a plurality of anchor bars 21. A concave portion 22 is formed on the lower surface of the sole plate 20, and the upper steel plate 4 is connected to the bolt 2 with the shear key 8 fitted in the concave portion 22.
3 fix to the sole plate 20. On the other hand, the lower steel plate 5 is the anchor bolt 1 screwed to the coupler 11.
6 is fixed to the lower structure 3 by being embedded at the time of concrete casting of the lower structure 3.
【００１８】上記のようにして固定された積層ゴム支承
１において、上下部構造２，３間に作用する地震時水平
力は、上部構造２と積層ゴム支承１との間ではせん断キ
ー８を介して互いに伝達され、下部構造３と積層ゴム支
承１との間ではカプラー１１を介して互いに伝達され、
積層ゴム支承１がせん断変形する。なお、水平力を伝達
するためのせん断キー８は、工場での出荷前に行われる
せん断試験の際に、試験機にセットするためにも用いら
れる。In the laminated rubber bearing 1 fixed as described above, the horizontal force at the time of the earthquake acting between the upper and lower structures 2 and 3 is transmitted via the shear key 8 between the upper structure 2 and the laminated rubber bearing 1. And between the lower structure 3 and the laminated rubber bearing 1 via the coupler 11,
The laminated rubber bearing 1 undergoes shear deformation. The shear key 8 for transmitting the horizontal force is also used to set the test machine in a shear test performed before shipment at a factory.
【００１９】上下部構造２，３間に作用する上揚力は、
アンカーボルト１６からカプラー１１を介して、より具
体的には段付き部１３，１４を介して下部鋼板５に伝達
され、さらに積層ゴム部６，７、上部鋼板４、ソールプ
レート２０及びアンカーバー２１を介して上部構造２に
伝達される。その際、ボルト２３は上部鋼板４及びソー
ルプレート２０間で上揚力を伝達する機能を持つが、こ
のボルト２３により水平力を受け持つような設計とする
ことも可能である。The upper lift acting between the upper and lower structures 2 and 3 is:
The power is transmitted from the anchor bolt 16 to the lower steel plate 5 via the coupler 11, more specifically, to the stepped portions 13 and 14, and further to the laminated rubber portions 6 and 7, the upper steel plate 4, the sole plate 20 and the anchor bar 21. Is transmitted to the upper structure 2 via the At this time, the bolt 23 has a function of transmitting an upward lift between the upper steel plate 4 and the sole plate 20, but the bolt 23 may be designed to receive a horizontal force.
【００２０】上記のような積層ゴム支承１によれば、ア
ンカーボルト１６を下部鋼板５に直接固定するのではな
く、下部鋼板５に装着したカプラー１１を介して固定す
るので、アンカーボルト１６の必要ねじ長さは、カプラ
ー１１の長さで調節することができ、下部鋼板５を薄く
することができる。したがって、積層ゴム支承全体の重
量の軽減化を図ることができる。そして、このような目
的のために用いられるカプラー１１は、その取付孔１０
から突出する突出部１５を持つこととなり、この突出部
１５は工場出荷時のせん断試験用のせん断キーとして利
用できる。According to the laminated rubber bearing 1 as described above, the anchor bolt 16 is not directly fixed to the lower steel plate 5 but is fixed via the coupler 11 attached to the lower steel plate 5, so that the anchor bolt 16 is required. The screw length can be adjusted by the length of the coupler 11, and the lower steel plate 5 can be made thinner. Therefore, the weight of the entire laminated rubber bearing can be reduced. The coupler 11 used for such a purpose has a mounting hole 10.
, Which can be used as a shear key for a shear test at the time of factory shipment.
【００２１】図４〜図６は、それぞれカプラーの別の実
施形態を示す断面図である。図４に示す例は、カプラー
１１のねじ孔１２を貫通孔とし、カプラー１１の上面に
貫通孔を塞ぐ蓋板２５を溶接したものである。図５に示
す例は、図３に示したものと同様にカプラー１１を袋状
のものとし、取付孔１０からの突出部１５の外周に下部
鋼板５の下面と係合する環状の段付き部２６を設けたも
のである。FIGS. 4 to 6 are sectional views showing other embodiments of the coupler. In the example shown in FIG. 4, the screw hole 12 of the coupler 11 is used as a through hole, and a lid plate 25 that covers the through hole is welded to the upper surface of the coupler 11. In the example shown in FIG. 5, the coupler 11 has a bag-like shape like the one shown in FIG. 26 is provided.
【００２２】また、図６に示す実施形態は、図５に示し
たと同様な段付き部２６を持つカプラー１１において、
そのねじ孔１２を貫通孔とし、カプラー１１の上面に貫
通孔を塞ぐ蓋板２５を溶接したものである。なお、図５
及び図６に示す例は、溶接１８の部分が上揚力を負担す
るので、上揚力に耐える溶接代を必要とする。このた
め、下部鋼板５に溶接による歪みが発生するおそれがあ
る。この歪み発生防止の観点からは前述のように、図３
及び図４に示したものが好ましい形態である。In the embodiment shown in FIG. 6, a coupler 11 having a stepped portion 26 similar to that shown in FIG.
The screw hole 12 is a through hole, and a lid plate 25 for closing the through hole is welded to the upper surface of the coupler 11. FIG.
The example shown in FIG. 6 and FIG. 6 requires a welding margin that can withstand the upward lift because the weld 18 bears the upward lift. For this reason, there is a possibility that distortion may occur in the lower steel plate 5 due to welding. From the viewpoint of preventing the occurrence of distortion, as described above, FIG.
4 and FIG. 4 are preferred embodiments.
【００２３】＜支承の取り替え＞上部鋼板４はソールプ
レート２０を介して上部構造２に固定されているので、
ボルト２３を取り外すことにより上部鋼板４の固定を容
易に解除することができる。他方、下部鋼板５はカプラ
ー１１を介しているとはいえ、結果的にはアンカーボル
ト１６により直接下部構造３に固定されている構造とな
っているので、下部鋼板５の固定を解除するのは容易で
はない。すなわち、仮に積層ゴム支承１を取り替えよう
とすると、アンカーボルト１６が露出するまで下部構造
３のコンクリートをはつらなければならず、しかもその
際のジャッキアップ量も大きくなり、困難な作業とな
る。<Replacement of Bearing> Since the upper steel plate 4 is fixed to the upper structure 2 via the sole plate 20,
By removing the bolt 23, the fixing of the upper steel plate 4 can be easily released. On the other hand, although the lower steel plate 5 has the structure directly fixed to the lower structure 3 by the anchor bolt 16 although the lower steel plate 5 is interposed through the coupler 11, it is necessary to release the fixing of the lower steel plate 5. It's not easy. That is, if the laminated rubber bearing 1 is to be replaced, concrete of the lower structure 3 must be removed until the anchor bolts 16 are exposed, and the amount of jack-up at that time increases, which is a difficult task.
【００２４】図７は支承の取り替えを容易になし得るカ
プラー構造を示す例である。カプラー１１の内周ねじ１
２には、外周にねじ２６を有する保持リング２７が螺着
されている。この保持リング２７の内部には、その内周
に形成された環状の段付き部２８に支持された状態で内
ナット２９が収容されている。この内ナット２９にアン
カーボルト１６が螺着されている。保持リング２７の段
付き部２８の外周にはスパナ等の工具を掛けるための平
行部３０が形成されている。FIG. 7 shows an example of a coupler structure in which the bearing can be easily replaced. Inner circumference screw 1 of coupler 11
A holding ring 27 having a screw 26 on its outer periphery is screwed to 2. Inside the holding ring 27, an inner nut 29 is accommodated while being supported by an annular stepped portion 28 formed on the inner periphery thereof. The anchor bolt 16 is screwed to the inner nut 29. A parallel portion 30 for hanging a tool such as a wrench is formed on the outer periphery of the stepped portion 28 of the holding ring 27.
【００２５】積層ゴム支承１を取り替える際は、次のよ
うにする。下部鋼板５の下面側のコンクリートを保持リ
ング２７が抜け出る程度の深さまではつり、保持リング
２７を工具で回転させて抜き出す。これにより、アンカ
ーボルト１６とカプラー１１との縁が切れるので、上部
構造２をジャッキアップしてゴム支承１を上に上げれ
ば、ゴム支承１を横方向に引き出すことができる。した
がって、アンカーボルト１６の長さ分のコンクリートを
完全にはつる必要がない。また、ジャッキアップ量もせ
ん断キー８のソールプレート２０への嵌合長さと、おお
よそ内ナット２９の長さ分だけで済み、交換を容易に行
うことができる。When the laminated rubber bearing 1 is replaced, the following is performed. The concrete on the lower surface side of the lower steel plate 5 is suspended to such a depth that the retaining ring 27 comes out, and the retaining ring 27 is rotated with a tool and extracted. As a result, since the edge between the anchor bolt 16 and the coupler 11 is cut off, if the upper structure 2 is jacked up and the rubber bearing 1 is raised, the rubber bearing 1 can be pulled out in the lateral direction. Therefore, it is not necessary to completely suspend the concrete for the length of the anchor bolt 16. Further, the jack-up amount only needs to be the fitting length of the shear key 8 to the sole plate 20 and approximately the length of the inner nut 29, and the replacement can be easily performed.
【００２６】この発明による積層ゴム支承１は、上部構
造２がコンクリート桁である場合に限らず、鋼桁である
場合も適用できる。図８は、その固定構造を示す橋軸方
向に沿う断面図である。この場合、上部鋼板４及び下部
鋼板５ともに中間部鋼板７と外形寸法が同じくなってい
て、上部鋼板４は鋼桁２のウェブ３１及びこれに溶接さ
れたソールプレート２０を貫通するボルト３２により固
定される。その他の構造は、コンクリート桁の場合と同
様である。The laminated rubber bearing 1 according to the present invention can be applied not only when the upper structure 2 is a concrete girder but also when the upper structure 2 is a steel girder. FIG. 8 is a cross-sectional view along the bridge axis direction showing the fixing structure. In this case, both the upper steel plate 4 and the lower steel plate 5 have the same outer dimensions as the intermediate steel plate 7, and the upper steel plate 4 is fixed by bolts 32 penetrating the web 31 of the steel girders 2 and the sole plate 20 welded thereto. Is done. Other structures are the same as those of the concrete girder.
【００２７】[0027]
【発明の効果】以上のように、この発明によれば、アン
カーボルトの必要ねじ長さをカプラーの長さで調節する
ことができるので、下部鋼板を薄くすることができ、全
体重量の軽減化を図ることができる。また、従来のよう
な穴加工工数も少ないのでコストの低減を図ることがで
きる。さらに、交換も容易に行うことができる。As described above, according to the present invention, the required screw length of the anchor bolt can be adjusted by the length of the coupler, so that the lower steel plate can be made thinner and the overall weight can be reduced. Can be achieved. Further, since the number of man-hours required for drilling holes as in the related art is small, the cost can be reduced. Further, replacement can be easily performed.
【図１】この発明の実施の形態を示す橋軸方向に沿う断
面図である。FIG. 1 is a cross-sectional view along a bridge axis direction showing an embodiment of the present invention.
【図２】図１のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】カプラーの取付状態を拡大して示す断面図であ
る。FIG. 3 is an enlarged cross-sectional view showing an attached state of a coupler.
【図４】カプラーの別の実施形態を示す断面図である。FIG. 4 is a sectional view showing another embodiment of the coupler.
【図５】カプラーのさらに別の実施形態を示す断面図で
ある。FIG. 5 is a sectional view showing still another embodiment of the coupler.
【図６】カプラーのさらに別の実施形態を示す断面図で
ある。FIG. 6 is a sectional view showing still another embodiment of the coupler.
【図７】カプラーのさらに別の実施形態を示す断面図で
ある。FIG. 7 is a cross-sectional view showing still another embodiment of the coupler.
【図８】この発明を上部構造が鋼桁である場合に適用し
た実施形態を示す断面図である。FIG. 8 is a sectional view showing an embodiment in which the present invention is applied to a case where the upper structure is a steel girder.
【図９】従来例を示す橋軸方向に沿う断面図である。FIG. 9 is a cross-sectional view along a bridge axis direction showing a conventional example.
１：積層ゴム支承 ２：上部構造 ３：下部構造 ４：上部鋼板 ５：下部鋼板 ６：ゴム層 ７：中間部鋼板 ８：せん断キー １０：カプラー取付孔 １１：カプラー １２：ねじ １３：段付き部 １４：段付き部 １５：突出部 １６：アンカーボルト ２０：ソールプレート ２１：アンカーバー ２５：蓋板 ２６：ねじ ２７：保持リング ２８：段付き部 ２９：内ナット 1: Laminated rubber bearing 2: Upper structure 3: Lower structure 4: Upper steel plate 5: Lower steel plate 6: Rubber layer 7: Middle steel plate 8: Shear key 10: Coupler mounting hole 11: Coupler 12: Screw 13: Stepped portion 14: Stepped part 15: Projecting part 16: Anchor bolt 20: Sole plate 21: Anchor bar 25: Cover plate 26: Screw 27: Retaining ring 28: Stepped part 29: Inner nut
Claims (9)
鋼板間にそれぞれ複数のゴム層と中間部鋼板とが交互に
積層されてなる積層ゴム支承であって、 前記下部鋼板に設けた複数の取付孔に、内周にねじが形
成された筒状のカプラーが挿入固定され、 これらのカプラーは前記取付孔から下方に突出する突出
部を有していることを特徴とする積層ゴム支承。1. A laminated rubber bearing having upper and lower steel plates at upper and lower ends, and a plurality of rubber layers and intermediate steel plates alternately laminated between the upper and lower steel plates, respectively, provided on the lower steel plate. A plurality of mounting holes, a tubular coupler having a thread formed on an inner periphery thereof is inserted and fixed, and these couplers have a protrusion protruding downward from the mounting hole. Bearing.
には互いに係合する段付き部がそれぞれ設けられている
ことを特徴とする請求項１記載の積層ゴム支承。2. The laminated rubber bearing according to claim 1, wherein a stepped portion which engages with each other is provided on an outer periphery of said coupler and an inner periphery of said mounting hole.
部鋼板の下面と係合する段付き部が設けられていること
を特徴とする請求項１記載の積層ゴム支承。3. The laminated rubber bearing according to claim 1, wherein a stepped portion which engages with a lower surface of the lower steel plate is provided on an outer periphery of the projecting portion of the coupler.
かつ外周にねじが形成された保持リングが螺着され、こ
の保持リングの内部に前記段付き部に支持されて内ナッ
トが収容されていることを特徴とする請求項１〜３のい
ずれか１記載の積層ゴム支承。4. The coupler has a stepped portion on the inner periphery,
A holding ring having a thread formed on its outer periphery is screwed into the holding ring, and an inner nut is housed inside the holding ring while being supported by the stepped portion. The described laminated rubber bearing.
れ、上下端に上下部鋼板を有し、これら上下部鋼板間に
それぞれ複数のゴム層と中間部鋼板とが交互に積層され
てなる積層ゴム支承の固定構造であって、 前記下部鋼板に設けた複数の取付孔に、内周にねじが形
成された筒状のカプラーが挿入固定され、 これらのカプラーは前記取付孔から下方に突出する突出
部を有し、 前記下部鋼板は、前記カプラーに螺着されて前記下部構
造に埋設されるアンカーボルトにより該下部構造に固定
されることを特徴とする積層ゴム支承の固定構造。5. A steel sheet is fixedly installed between an upper structure and a lower structure, has upper and lower steel plates at upper and lower ends, and a plurality of rubber layers and intermediate steel plates are alternately laminated between the upper and lower steel plates. A fixing structure of a laminated rubber bearing, comprising: a plurality of mounting holes provided in the lower steel plate, a tubular coupler having a thread formed on an inner periphery thereof is inserted and fixed, and these couplers are downward from the mounting hole. A fixing structure for a laminated rubber bearing, comprising: a protruding portion, wherein the lower steel plate is screwed to the coupler and fixed to the lower structure by an anchor bolt embedded in the lower structure.
ソールプレートに着脱自在に固定されることを特徴とす
る請求項５記載の積層ゴム支承の固定構造。6. The fixing structure for a laminated rubber bearing according to claim 5, wherein said upper steel plate is detachably fixed to a sole plate fixed to said upper structure.
には互いに係合する段つ付き部がそれぞれ設けられてい
ることを特徴とする請求項５又は６記載の積層ゴム支承
の固定構造。7. A fixing structure for a laminated rubber bearing according to claim 5, wherein stepped portions which engage with each other are provided on an outer periphery of said coupler and an inner periphery of said mounting hole, respectively. .
部鋼板の下面と係合する段付き部が設けられていること
を特徴とする請求項５又は６記載の積層ゴム支承の固定
構造。8. The fixing structure for a laminated rubber bearing according to claim 5, wherein a stepped portion which engages with a lower surface of the lower steel plate is provided on an outer periphery of the projecting portion of the coupler.
かつ外周にねじが形成された保持リングが螺着され、こ
の保持リングの内部に前記段付き部に支持されて内ナッ
トが収容され、この内ナットに前記アンカーボルトが螺
着されていることを特徴とする請求項５〜８のいずれか
１記載の積層ゴム支承の固定構造。9. The coupler has a stepped portion on the inner periphery,
A holding ring having a thread formed on its outer periphery is screwed into the holding ring, an inner nut is supported by the stepped portion inside the holding ring, and the anchor bolt is screwed to the inner nut. A fixing structure for a laminated rubber bearing according to any one of claims 5 to 8, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001050696A JP4493222B2 (en) | 2001-02-26 | 2001-02-26 | Laminated rubber bearing and structure for fixing the bearing to a structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001050696A JP4493222B2 (en) | 2001-02-26 | 2001-02-26 | Laminated rubber bearing and structure for fixing the bearing to a structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002250008A true JP2002250008A (en) | 2002-09-06 |
| JP4493222B2 JP4493222B2 (en) | 2010-06-30 |
Family
ID=18911616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001050696A Expired - Lifetime JP4493222B2 (en) | 2001-02-26 | 2001-02-26 | Laminated rubber bearing and structure for fixing the bearing to a structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4493222B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005163281A (en) * | 2003-11-28 | 2005-06-23 | Oiles Ind Co Ltd | Attaching structure of laminated rubber base-isolated support device |
| JP2005171609A (en) * | 2003-12-10 | 2005-06-30 | Oiles Ind Co Ltd | Mounting structure of multi-layer rubber base isolation bearing device |
| JP2008002062A (en) * | 2006-06-20 | 2008-01-10 | Kaimon:Kk | Fixing structure for lower and upper shoes of support for bridge |
| JP2008128280A (en) * | 2006-11-17 | 2008-06-05 | Bridgestone Corp | Support |
| JP2009036291A (en) * | 2007-08-01 | 2009-02-19 | Bridgestone Corp | Method for fixing anchor bolt |
| JP2010216086A (en) * | 2009-03-13 | 2010-09-30 | Miwa Tec:Kk | Coupler for fixing bearing device |
| JP2010275779A (en) * | 2009-05-29 | 2010-12-09 | Bridgestone Corp | Mounting structure of bridge bearer |
| WO2011043242A1 (en) * | 2009-10-06 | 2011-04-14 | オイレス工業株式会社 | Laminated rubber body joining members, as well as laminated rubber body and structure using such joining members |
| KR200470260Y1 (en) | 2013-07-03 | 2013-12-06 | 삼영엠텍(주) | Anchor Bolt System |
| CN113483046A (en) * | 2021-07-05 | 2021-10-08 | 常州市大成真空技术有限公司 | Shock isolation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4631274B2 (en) * | 2003-11-28 | 2011-02-16 | オイレス工業株式会社 | Laminated rubber seismic isolation device mounting structure |
| JP2005163281A (en) * | 2003-11-28 | 2005-06-23 | Oiles Ind Co Ltd | Attaching structure of laminated rubber base-isolated support device |
| JP2005171609A (en) * | 2003-12-10 | 2005-06-30 | Oiles Ind Co Ltd | Mounting structure of multi-layer rubber base isolation bearing device |
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| JP2008002062A (en) * | 2006-06-20 | 2008-01-10 | Kaimon:Kk | Fixing structure for lower and upper shoes of support for bridge |
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| JP2009036291A (en) * | 2007-08-01 | 2009-02-19 | Bridgestone Corp | Method for fixing anchor bolt |
| JP2010216086A (en) * | 2009-03-13 | 2010-09-30 | Miwa Tec:Kk | Coupler for fixing bearing device |
| JP2010275779A (en) * | 2009-05-29 | 2010-12-09 | Bridgestone Corp | Mounting structure of bridge bearer |
| WO2011043242A1 (en) * | 2009-10-06 | 2011-04-14 | オイレス工業株式会社 | Laminated rubber body joining members, as well as laminated rubber body and structure using such joining members |
| KR200470260Y1 (en) | 2013-07-03 | 2013-12-06 | 삼영엠텍(주) | Anchor Bolt System |
| CN113483046A (en) * | 2021-07-05 | 2021-10-08 | 常州市大成真空技术有限公司 | Shock isolation device |
| CN113483046B (en) * | 2021-07-05 | 2022-02-08 | 常州市大成真空技术有限公司 | Shock isolation device |
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| Publication number | Publication date |
|---|---|
| JP4493222B2 (en) | 2010-06-30 |
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