JP2560974Y2 - Pre-shear deformation holding device for rubber bearing - Google Patents
Pre-shear deformation holding device for rubber bearingInfo
- Publication number
- JP2560974Y2 JP2560974Y2 JP3209792U JP3209792U JP2560974Y2 JP 2560974 Y2 JP2560974 Y2 JP 2560974Y2 JP 3209792 U JP3209792 U JP 3209792U JP 3209792 U JP3209792 U JP 3209792U JP 2560974 Y2 JP2560974 Y2 JP 2560974Y2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- holding device
- shear deformation
- holders
- deformation holding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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Description
【0001】[0001]
【産業上の利用分野】本考案は、橋脚等の下部構造物と
橋桁等の上部構造物との間に介装されるゴム積層体等か
らなる支承材を予めせん断変形させる装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preliminarily shearing and deforming a support material such as a rubber laminate interposed between a lower structure such as a pier and an upper structure such as a bridge girder.
【0002】[0002]
【従来技術】橋脚等の下部支持構造物にゴム支承材を介
してコンクリートの橋桁等の上部構造物を支承する場
合、温度変化により構造物は伸縮し、特にコンクリート
の橋桁等は乾燥収縮やクリープ等により橋軸方向(前後
水平方向)に収縮して上下構造物間で互いに変位し、そ
のためゴム支承材は、橋軸方向にせん断変形される。2. Description of the Related Art When an upper structure such as a concrete bridge girder is supported on a lower support structure such as a pier through a rubber bearing, the structure expands and contracts due to a change in temperature. By contracting in the direction of the bridge axis (horizontal direction), the upper and lower structures are displaced from each other, so that the rubber bearing member is sheared in the direction of the bridge axis.
【0003】本来のゴム支承材機能である温度変化によ
る橋桁伸縮変位を吸収するほかに上述コンクリート収縮
変化を吸収するためには、構造物の強化及びゴム支承材
の高さを高くする等の方法が必要である。In order to absorb the above-mentioned concrete shrinkage change in addition to absorbing the bridge girder expansion and contraction displacement due to temperature change, which is the original function of the rubber bearing material, a method such as strengthening the structure and increasing the height of the rubber bearing material is used. is required.
【0004】しかしいずれにしても設計上の弊害が多く
なり、またコストも高くなる。そこでゴム支承材に予め
構造物の変形方向と逆方向のせん断変形を与えておく方
法が従来より採用されており、そのためのせん断変形保
持装置が種々提案されている。[0004] In any case, however, the adverse effects on the design increase and the cost also increases. Therefore, a method in which a shear deformation in the direction opposite to the deformation direction of the structure is given to the rubber bearing material in advance has conventionally been adopted, and various shear deformation holding devices for that purpose have been proposed.
【0005】例えば特開昭62-45803号公報に記載された
例について図6および図7に基づき説明する。ゴム支承
材01は、偏平な略立方体状のゴム層02の上面および下面
に矩形の上部金属板03と下部金属板04が一体に固着さ
れ、上下各金属板03,04の中央に係止突起03aと04aが
それぞれ設けられている。For example, an example described in Japanese Patent Application Laid-Open No. Sho 62-45803 will be described with reference to FIGS. A rubber support member 01 has a rectangular upper metal plate 03 and a lower metal plate 04 integrally fixed on the upper and lower surfaces of a flat, substantially cubic rubber layer 02, and a locking projection at the center of each of the upper and lower metal plates 03, 04. 03a and 04a are provided respectively.
【0006】このゴム支承材01の上下金属板03,04を係
止突起03aと04aを利用して特別の治具を用いて互いに
前後に変位させゴム層02を予めせん断変形させておく。
かかる状態で下面板05および前後幅長のより短い上面板
06とこれらを連結する多数のリブ07とからなる金属製前
部支承部材08を前記ゴム支承材01の前部に配置し、同様
に下面板09、前後幅長のより長い上面板010 およびリブ
011 からなる金属製後部支承部材012 をゴム支承材01の
後部に配置し、両金属製支承部材08,012 によりゴム支
承材01を挟み、ゴム支承材01の左右側方に配置された金
属製連結部材013 ,014 が前後金属製前部支承部材08,
012 の左右端部どうしを連結し、かつ左右金属製連結部
材013 ,014 の前後端部をそれぞれボルト015 ,017 が
貫通し、ナット016 ,018 で螺合緊締される。The upper and lower metal plates 03 and 04 of the rubber bearing material 01 are displaced back and forth with a special jig using the locking projections 03a and 04a, so that the rubber layer 02 is deformed in advance by shearing.
In this state, the lower plate 05 and the upper plate having a shorter front-rear width are used.
A metal front support member 08 comprising a plurality of ribs 07 for connecting these members is disposed at the front of the rubber support member 01, and a lower plate 09, a longer upper and lower front plate 010 and a rib are also provided.
A metal rear support member 012 comprising a metal support member 012 is disposed at a rear portion of the rubber support member 01, and the metal support members 08 and 012 sandwich the rubber support member 01, and are disposed on the left and right sides of the rubber support member 01. The connecting members 013 and 014 are front and rear metal front bearing members 08 and
Bolts 015 and 017 penetrate the left and right ends of the left and right metal connecting members 013 and 014, respectively, and are screwed and tightened with nuts 016 and 018.
【0007】このようにしてゴム支承材01を前後から金
属製支承部材08,012 が挟持し、両金属製支承部材08,
012 を左右の金属製連結部材013 ,014 が連結して前後
のボルト015 ,017 、ナット016 ,018 により保持され
ると、ゴム支承材01をせん断変形させていた治具を外
し、橋脚等の下部構造物の上面に下部金属板04を固定
し、上部金属板03の上には橋桁等の上部構造物がコンク
リートを打設することにより形成される。In this manner, the metal bearing members 08 and 012 sandwich the rubber bearing member 01 from the front and rear, and the two metal bearing members 08 and 012 are sandwiched.
When the left and right metal connecting members 013 and 014 are connected to each other and held by the front and rear bolts 015 and 017 and the nuts 016 and 018, the jig that has sheared and deformed the rubber bearing material 01 is removed, and the bridge pier and the like are removed. A lower metal plate 04 is fixed on the upper surface of the lower structure, and an upper structure such as a bridge girder is formed on the upper metal plate 03 by casting concrete.
【0008】コンクリートの養生期間を経過したのち左
右方向に貫通保持したボルト015 ,017 を外し、金属製
連結部材013 ,014 および金属製支承部材08,012 を取
り除く。こうして予めせん断変形されたゴム支承材によ
り上部構造物が支持される。After the curing period of the concrete has elapsed, the bolts 015 and 017 that have been penetrated and held in the left-right direction are removed, and the metal connecting members 013 and 014 and the metal bearing members 08 and 012 are removed. Thus, the upper structure is supported by the rubber bearing material that has been sheared in advance.
【0009】[0009]
【解決しようとする課題】以上のように従来のゴム支承
材01のせん断変形を保持する装置であると、特別にゴム
支承材01をせん断変形させる治具を必要とし、かつ保持
装置がゴム支承材01の周囲に大きく配設され、多くの部
材を組合わせて構成されているので、大型で重量が重く
コスト高であり、構造も複雑で作業性も悪い。As described above, the conventional device for holding the shear deformation of the rubber bearing material 01 requires a special jig for shearing and deforming the rubber bearing material 01, and the holding device requires a rubber bearing. Since it is largely arranged around the material 01 and is configured by combining many members, it is large, heavy and expensive, and has a complicated structure and poor workability.
【0010】また予備せん断保持装置には、ゴム支承材
01のせん断変形による元に戻ろうとする力が働いている
ので、保持装置をゴム支承材01から外す際に、再びゴム
支承材01をさらにせん断変形させて保持力が加わらない
ようにして取り外す必要がある。他の従来例も治具を必
要とし、作業性も悪い。[0010] The pre-shearing and holding device includes a rubber bearing material.
Since the force to return to the original state due to the shear deformation of 01 is working, when removing the holding device from the rubber bearing material 01, it is necessary to further deform the rubber bearing material 01 again so that the holding force is not applied and remove it. There is. Other conventional examples also require a jig and workability is poor.
【0011】本考案は、かかる点に鑑みなされたもの
で、その目的とする処は、支承材をせん断変形させる治
具や外す際の治具等を特別に必要とせず小型軽量かつ低
コストの簡単な構造で作業性の良い予備せん断変形保持
装置を供する点にある。The present invention has been made in view of the above points, and its object is to provide a compact, lightweight, and low-cost jig that does not require a jig for shearing and deforming the bearing material or a jig for removing the jig. Another object of the present invention is to provide a pre-shear deformation holding device having a simple structure and good workability.
【0012】[0012]
【課題を解決するための手段および作用】上記目的を達
成するために、本考案は外側面から内側面までの厚さが
上部と下部とで所定長さの異なる一対の保持具を上下逆
にして前後に対向させ、両保持具に、一方の保持具の外
側から長尺のボルトを前後方向に貫通して他方の保持具
の外側へ突出したボルト端部にナットを螺合させ、両保
持具間にゴム積層体または同等の機能を有するゴム構造
体からなる支承材を挟みせん断変形し保持するゴム支承
材の予備せん断変形保持装置とした。In order to achieve the above-mentioned object, according to the present invention, a pair of holders having different thicknesses from an outer surface to an inner surface having a predetermined length at an upper portion and a lower portion are turned upside down. And a nut is screwed into each of the holders, and a nut is screwed into a bolt end projecting outward from the other holder through a long bolt from the outside of one of the holders. A pre-shearing deformation holding device for a rubber bearing material that holds a bearing made of a rubber laminate or a rubber structure having an equivalent function between tools by holding the material in shear deformation.
【0013】前後保持具をボルトが貫通しナットで螺合
する簡単な構造であり、小型軽量かつ低コストであり、
該せん断変形保持装置自体が支承材をせん断変形させる
ことができ特別な治具を必要としない。[0013] It is a simple structure in which a bolt penetrates the front and rear holders and is screwed with a nut.
The shear deformation holding device itself can shear deform the support material, and does not require a special jig.
【0014】[0014]
【実 施 例】以下図1ないし図7に図示した本考案の
一実施例について説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention shown in FIGS. 1 to 7 will be described below.
【0015】図1は、支承材1を該予備せん断変形保持
装置10が保持した状態を示す斜視図である。支承材1
は、ゴム積層体2の上下面に金属製の上板3および下板
4が固着されたものである。FIG. 1 is a perspective view showing a state in which the supporting material 1 is held by the preliminary shear deformation holding device 10. Bearing material 1
The upper plate 3 and the lower plate 4 made of metal are fixed to the upper and lower surfaces of the rubber laminate 2.
【0016】ゴム積層体2はゴム体内に複数の金属板が
ゴム層と交互に層をなすように埋設されたものであり、
全体で偏平な立方体状をなしており、その上下面に固着
される上板3および下板4は矩形をなしてゴム積層体2
よりも四方にはみ出している。The rubber laminate 2 has a plurality of metal plates embedded in a rubber body so as to form layers alternately with a rubber layer.
The upper plate 3 and the lower plate 4 fixed on the upper and lower surfaces of the whole are in the shape of a flat cube, and the rubber laminate 2 has a rectangular shape.
More than four sides.
【0017】予備せん断変形保持装置10は、前後の保持
具11,12を長尺のボルト13が貫通しナット14で螺合し締
めつけるものである。前後の保持具11,12は、同形状の
ものを対称的に上下逆に向い合わせて使用している。In the pre-shearing deformation holding device 10, a long bolt 13 penetrates the front and rear holding members 11, 12, and is screwed together with a nut 14 to be tightened. The front and rear holders 11 and 12 have the same shape and are used symmetrically facing upside down.
【0018】前方の保持具11について形状を説明する
と、その外側面および左右側面が垂直面をなし、上下側
面が水平面をなし、内側面は上下の垂直面11a,11bが
前後にずれて、外側面から上側垂直面11aまでの厚さの
方が下側垂直面11bまでの厚さより所定長さだけ厚く、
上下垂直面11aと11b間は斜面11cで構成されている。The shape of the front holder 11 will be described. The outer side surface and the left and right side surfaces form a vertical surface, the upper and lower side surfaces form a horizontal surface, and the inner side surface has upper and lower vertical surfaces 11a and 11b shifted forward and backward. The thickness from the side surface to the upper vertical surface 11a is thicker by a predetermined length than the thickness from the lower vertical surface 11b,
An inclined surface 11c is provided between the upper and lower vertical surfaces 11a and 11b.
【0019】一方の保持具12も同形であり、上下逆にし
て保持具11と対向して用いるため、外側面から上側垂直
面12aまでの厚さの方が下側垂直面12bまでの厚さより
所定長だけ薄くなる。One of the holders 12 has the same shape and is used upside down so as to face the holder 11, so that the thickness from the outer surface to the upper vertical surface 12a is larger than the thickness from the lower vertical surface 12b. It becomes thinner by a predetermined length.
【0020】かかる保持具11,12を相対向させ同軸にボ
ルト孔を形成してボルト13を貫通するようにしている。
この予備せん断変形保持装置10を1個の支承材1に対し
て左右に配設する。The holders 11 and 12 are opposed to each other, and a bolt hole is formed coaxially so that the bolt 13 penetrates.
The pre-shearing deformation holding device 10 is disposed on the left and right with respect to one bearing material 1.
【0021】図2および図3は、ゴム積層体2をせん断
変形する方法および保持状態を示す側面図であり、図2
に示すようにゴム積層体2をせん断変形するには、支承
材1の左右側部において一対の保持具11,12を前後に対
向させて、保持具11の上側垂直面11aを支承材1の上板
3の前側面に当てがい、保持具12の下側垂直面12bを支
承材1の下板4の後側面に当てがい、ボルト13を前方か
ら保持具11のボルト孔に貫通させ、ゴム積層体2側方を
通して保持具12のボルト孔に貫通させ、後方へ突出した
ねじ部にナット14を螺合する(図2に示す状態)。FIGS. 2 and 3 are side views showing a method of shearing and deforming the rubber laminate 2 and a holding state.
In order to shear-deform the rubber laminate 2 as shown in (1), a pair of holding tools 11 and 12 are opposed to each other on the left and right sides of the supporting material 1 and the upper vertical surface 11a of the holding tool 11 is The front side of the upper plate 3 is applied, the lower vertical surface 12b of the holder 12 is applied to the rear side of the lower plate 4 of the support member 1, and the bolt 13 is passed through the bolt hole of the holder 11 from the front. A nut 14 is screwed into a threaded portion of the retainer 12 which passes through the side of the laminate 2 and is screwed to the rear (a state shown in FIG. 2).
【0022】左右ともにこのように予備せん断変形保持
装置10を装着したのち、ナット14をさらに螺入していく
と、前側の保持具11は支承材1の上板3を後方へ押し、
後側の保持具12は支承材1の下板4を前方へ押し、上板
3と下板4を互いに逆方向に変位してゴム積層体2にせ
ん断変形を生じさせる。After the pre-shear deformation holding device 10 has been mounted on both the left and right in this way, when the nut 14 is further screwed in, the front holding tool 11 pushes the upper plate 3 of the support 1 backward,
The rear holder 12 pushes the lower plate 4 of the support 1 forward, displacing the upper plate 3 and the lower plate 4 in opposite directions to each other, causing the rubber laminate 2 to undergo shear deformation.
【0023】ボルト13とナット14のねじ機構により小さ
い力でも大きな力が支承材1に作用し容易にせん断変形
することができる。Even a small force acts on the screw mechanism of the bolt 13 and the nut 14, and a large force acts on the support member 1 so that the bearing member 1 can be easily sheared and deformed.
【0024】こうして上板3および下板4が保持具11,
12によって挟まれるまでナット14を螺入していきゴム積
層体2のせん断変形を終了し、かつせん断変形を保持す
る(図1および図3参照)。Thus, the upper plate 3 and the lower plate 4 are
The nut 14 is screwed in until the rubber laminate 2 is sandwiched by the nut 12 until the shear deformation is completed, and the shear deformation is maintained (see FIGS. 1 and 3).
【0025】このように予備せん断変形保持装置10がゴ
ム積層体2をせん断変形させるので、特別せん断変形の
ための専用の治具を必要としない。As described above, since the preliminary shear deformation holding device 10 shear deforms the rubber laminate 2, a special jig for special shear deformation is not required.
【0026】こうして予備せん断変形保持装置10により
せん断変形保持された支承材1を橋脚5の上面に、せん
断変形方向を橋軸方向として固着する。この固着には橋
脚5に植設されたアンカー部材等により行なわれる。そ
して橋桁6を構成する型枠を上板3の上部に配置してコ
ンクリートを打設し、このコンクリートの養生期間の経
過で上板3を橋桁6に固着する。The support member 1 thus shear-deformed and held by the preliminary shear-deformation holding device 10 is fixed to the upper surface of the pier 5 with the shear deformation direction being the bridge axis direction. This fixation is performed by an anchor member or the like implanted in the pier 5. Then, the formwork forming the bridge girder 6 is placed on the upper plate 3 and concrete is poured, and the upper plate 3 is fixed to the bridge girder 6 after the curing period of the concrete.
【0027】このように支承材1の上板3、下板4が各
々橋桁6、橋脚5に固着されたのち、ナット14を緩め前
後の保持具11,12による挟持を解除すれば予備せん断変
形保持装置10は簡単に取り外すことができ、このときも
予備せん断変形保持装置10を取り外すための特別な治具
を必要としない。After the upper plate 3 and the lower plate 4 of the support member 1 are fixed to the bridge girder 6 and the pier 5, respectively, the nut 14 is loosened to release the holding by the front and rear holders 11 and 12, so that the preliminary shear deformation is performed. The holding device 10 can be easily removed, and no special jig for removing the preliminary shear deformation holding device 10 is required.
【0028】予備せん断変形保持装置10を取外した状態
を図5に示す。支承材1はゴム積層体2が橋軸方向に予
めせん断変形された状態で橋脚5と橋桁6との間に介装
されるので、橋桁6の伸縮に対して橋脚5の強度を増し
たりゴム積層体を大きくすることなく対処できる。以上
のように本実施例の予備せん断変形保持装置10は、一対
の保持具11,12とボルト13,14からなる極めて簡単な構
造で、小型軽量でコストも安く作業性にも優れている。FIG. 5 shows a state in which the preliminary shear deformation holding device 10 is removed. Since the bearing material 1 is interposed between the pier 5 and the bridge girder 6 in a state where the rubber laminate 2 has been sheared in advance in the bridge axis direction, the strength of the pier 5 against the expansion and contraction of the bridge girder 6 can be increased. This can be dealt with without increasing the size of the laminate. As described above, the preliminary shear deformation holding device 10 of the present embodiment has a very simple structure including the pair of holders 11 and 12 and the bolts 13 and 14, and is compact, lightweight, inexpensive, and excellent in workability.
【0029】[0029]
【考案の効果】本考案は、一対の保持具をボルト・ナッ
トで締め付けることで支承材のゴム積層体をせん断変形
し、かつ変形保持することができるので、せん断変形の
ための特別の治具を必要としない。保持具を取り外すと
きも同様に特別の治具を必要しない。一対の保持具とボ
ルト・ナットの簡単な構成なので、小型軽量でありかつ
低コストで作業性も良い。[Effect of the Invention] The present invention is a special jig for shear deformation because the rubber laminate of the support material can be sheared and deformed and held by tightening a pair of holders with bolts and nuts. Do not need. Similarly, no special jig is required when removing the holder. Since the pair of holders and the bolts and nuts have a simple configuration, they are small and lightweight, low-cost, and have good workability.
【図1】本考案に係る一実施例の予備せん断変形保持装
置および支承材の斜視図である。FIG. 1 is a perspective view of a pre-shearing deformation holding device and a supporting material according to an embodiment of the present invention.
【図2】せん断変形直前の予備せん断変形保持装置およ
び支承材の側面図である。FIG. 2 is a side view of a pre-shear deformation holding device and a supporting material immediately before shear deformation.
【図3】せん断変形後の予備せん断変形保持装置および
支承材の側面図である。FIG. 3 is a side view of a pre-shear deformation holding device and a support material after shear deformation.
【図4】橋脚と橋桁との間に予備せん断変形保持装置に
よりせん断変形された支承材を介装した状態を示す断面
図である。FIG. 4 is a cross-sectional view showing a state in which a bearing material shear-deformed by a preliminary shear deformation holding device is interposed between a pier and a bridge girder.
【図5】図4における予備せん断変形保持装置を取外し
た状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state where a preliminary shear deformation holding device in FIG. 4 is removed.
【図6】従来の予備せん断変形保持装置の断面図であ
る。FIG. 6 is a cross-sectional view of a conventional preliminary shear deformation holding device.
【図7】同平面図である。FIG. 7 is a plan view of the same.
1…支承材、2…ゴム積層体、3…上板、4…下板、5
…橋脚、6…橋桁、10…予備せん断変形保持装置、11,
12…保持具、13…ボルト、14…ナット、DESCRIPTION OF SYMBOLS 1 ... Support material, 2 ... Rubber laminate, 3 ... Upper plate, 4 ... Lower plate, 5
... bridge pier, 6 ... bridge girder, 10 ... pre-shearing deformation holding device, 11,
12 ... Holder, 13 ... Bolt, 14 ... Nut,
Claims (1)
部とで所定長さの異なる一対の保持具を上下逆にして前
後に対向させ、同両保持具に一方の保持具の外側から長
尺のボルトを前後方向に貫通して他方の保持具の外側へ
突出したボルト端部にナットを螺合させ、両保持具間に
ゴム積層体または同等の機能を有するゴム構造体からな
る支承材を挟みせん断変形し保持することを特徴とする
ゴム支承材の予備せん断変形保持装置。1. A pair of holders having different thicknesses from an outer surface to an inner surface having a predetermined length at an upper portion and a lower portion are turned upside down so as to face back and forth, and both of the holders have the outer side of one of the holders. A nut is screwed into the end of the bolt that penetrates a long bolt in the front-rear direction and protrudes outward from the other holder, and is formed of a rubber laminate or a rubber structure having an equivalent function between the two holders. A pre-shearing deformation holding device for rubber bearings, characterized in that the bearings are sandwiched and deformed and held.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3209792U JP2560974Y2 (en) | 1992-04-17 | 1992-04-17 | Pre-shear deformation holding device for rubber bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3209792U JP2560974Y2 (en) | 1992-04-17 | 1992-04-17 | Pre-shear deformation holding device for rubber bearing |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0627908U JPH0627908U (en) | 1994-04-15 |
JP2560974Y2 true JP2560974Y2 (en) | 1998-01-26 |
Family
ID=12349395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3209792U Expired - Lifetime JP2560974Y2 (en) | 1992-04-17 | 1992-04-17 | Pre-shear deformation holding device for rubber bearing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2560974Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100364864B1 (en) * | 1999-10-18 | 2002-12-16 | 주식회사유신코퍼레이션 | Bridge shoe for bias |
-
1992
- 1992-04-17 JP JP3209792U patent/JP2560974Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0627908U (en) | 1994-04-15 |
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