JPH0512329Y2 - - Google Patents
Info
- Publication number
- JPH0512329Y2 JPH0512329Y2 JP3479988U JP3479988U JPH0512329Y2 JP H0512329 Y2 JPH0512329 Y2 JP H0512329Y2 JP 3479988 U JP3479988 U JP 3479988U JP 3479988 U JP3479988 U JP 3479988U JP H0512329 Y2 JPH0512329 Y2 JP H0512329Y2
- Authority
- JP
- Japan
- Prior art keywords
- shoe
- bridge girder
- plate
- fixed
- base plate
- 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
- 239000002184 metal Substances 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000010586 diagram Methods 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、橋桁と橋脚との間に設けられる橋
梁用支承装置に関するものである。[Detailed description of the invention] [Industrial application field] This invention relates to a bridge support device provided between a bridge girder and a bridge pier.
橋桁を橋脚に弾性的に支持する支承として、ゴ
ム支承装置が知られている。第７図は、従来のゴ
ム支承装置の一例を示す側面図である。第７図に
示すように、従来のゴム支承Ａは、橋桁１の下面
にアンカーボルト８により固定された上沓３と、
橋脚２の上面にアンカーボルト９により固定され
た下沓４と、上沓３と下沓４との間に装着され
た、薄鋼板６を間に挟んだ複数のゴム板７からな
る積層ゴム板５とからなつている。
A rubber bearing device is known as a bearing that elastically supports a bridge girder on a bridge pier. FIG. 7 is a side view showing an example of a conventional rubber bearing device. As shown in FIG. 7, the conventional rubber bearing A has an upper shoe 3 fixed to the lower surface of the bridge girder 1 with anchor bolts 8,
A laminated rubber plate consisting of a lower shoe 4 fixed to the upper surface of the pier 2 by an anchor bolt 9, and a plurality of rubber plates 7 with a thin steel plate 6 sandwiched between them, installed between the upper shoe 3 and the lower shoe 4. It consists of 5.
このような構造の装置は、コンクリート製の橋
桁の乾燥収縮、および、クリープにより生ずる橋
桁の収縮によつて、ゴム支承に水平方向のせん断
変形が生ずる。
In devices with such a structure, horizontal shear deformation occurs in the rubber bearing due to drying shrinkage of the concrete bridge girder and shrinkage of the bridge girder caused by creep.
第８図に示すように、複数基の橋脚２を有する
橋梁においては、橋桁１の中心部１ａから左右に
その方向がわかれてせん断変形が発生する。その
結果、地震時等の大変形に際しては、各橋脚２に
配置されたゴム支承Ａのせん断変形による抵抗力
は、図示のように、各橋脚２に均等に伝達されな
い。従つて、橋脚２が倒壊する場合が生じ、この
ような倒壊を防止するためには、一部の橋梁の基
礎を大きくする必要が生ずる。 As shown in FIG. 8, in a bridge having a plurality of piers 2, shear deformation occurs in left and right directions from the center 1a of the bridge girder 1. As a result, in the event of large deformation such as during an earthquake, the resistance force due to shear deformation of the rubber bearings A arranged on each pier 2 is not evenly transmitted to each pier 2 as shown in the figure. Therefore, the bridge piers 2 may collapse, and in order to prevent such collapse, it is necessary to enlarge the foundations of some bridges.
上述の問題を解決するために、例えば、特開昭
62−45803号公報等には、橋桁の乾燥収縮、およ
び、クリープにより生ずる橋桁の収縮に相当する
予備せん断変形を、ゴム支承に予め与えておく手
段が開示されている。 In order to solve the above problem, for example,
Publication No. 62-45803 and the like disclose means for applying preliminary shear deformation to a rubber bearing in advance, which corresponds to drying shrinkage of a bridge girder and shrinkage of a bridge girder caused by creep.
しかしながら、ゴム支承の予備せん断量を設
計、計算することが複雑で且つ難しく、しかも、
計算通りには橋桁の乾燥およびクリープによる収
縮が行なわれないため、その効果が不十分である
問題が生じる。 However, designing and calculating the amount of pre-shear for rubber bearings is complicated and difficult.
Since the bridge girder does not dry and shrink due to creep as calculated, the problem arises that the effect is insufficient.
従つて、この考案の目的は、複雑な設計、計算
を要することなく、簡単な構造によつて、乾燥お
よびクリープによつて生ずる、橋桁の初期の収縮
によるせん断変形を防止し、乾燥およびクリープ
による収縮終了後に、ゴム支承の機能を回復させ
る橋梁用支承装置を提供することにある。 Therefore, the purpose of this invention is to prevent shear deformation due to initial shrinkage of bridge girders caused by drying and creep by using a simple structure without requiring complicated design or calculation. An object of the present invention is to provide a bridge bearing device that restores the function of a rubber bearing after shrinkage.
この考案の橋梁用支承装置は、橋脚上に固定さ
れた基板と、そして、前記基板上に固定された金
属板とからなる下沓と、
橋桁の下面に固定された基板と、前記基板の下
面に固定された積層ゴム板と、前記積層ゴム板の
下面に固定された金属板と、そして、前記基板、
前記積層ゴム板および前記金属板の、前記橋桁の
軸線と平行な両側面を、一体的に且つ取り外し可
能に締結する側板とからなる、橋桁軸線方向の長
さが前記下沓の橋桁軸線方向の長さよりも短い上
沓と、
前記下沓と前記上沓との間に、その何れか一方
に固定して設けられた滑り板と、
前記下沓の基板の、前記橋桁の軸線と平行な両
側に設けられた、前記上沓の基板の両側端に係合
する側部支承部材と、
前記下沓の基板の、前記橋桁の軸線方向の両側
端に設けられたストツパと、
前記橋桁の収縮を前記上沓を介して吸収するた
めの、前記ストツパと前記上沓の金属板との間に
形成された間隙と、そして、
前記橋桁の収縮が吸収された後の前記間隙内に
挿入し、前記上沓の金属板を前記下沓に固定する
ためのくさびとからなることに特徴を有するもの
である。
The bridge support device of this invention includes a base plate fixed on a pier, a lower shoe made of a metal plate fixed on the base plate, a base plate fixed on the lower surface of the bridge girder, and a lower surface of the base plate. a laminated rubber plate fixed to the laminated rubber plate, a metal plate fixed to the lower surface of the laminated rubber plate, and the substrate,
The length in the axial direction of the bridge girder is comprised of the laminated rubber plate and the side plate that integrally and removably fastens both sides of the metal plate parallel to the axis of the bridge girder, and the length in the axial direction of the bridge girder is equal to that of the lower shoe. an upper shoe that is shorter than the length of the shoe; a sliding plate fixed to either one of the lower shoe and the upper shoe; and both sides of the base plate of the lower shoe parallel to the axis of the bridge girder. side support members that engage with both ends of the base plate of the upper shoe; stoppers provided on both ends of the base plate of the lower shoe in the axial direction of the bridge girder; a gap formed between the stopper and the metal plate of the upper shoe for absorption through the upper shoe; and a gap formed between the stopper and the metal plate of the upper shoe; The shoe is characterized by comprising a wedge for fixing the metal plate of the upper shoe to the lower shoe.
次に、この考案の装置を、図面を参照しながら
説明する。第１図はこの考案の装置の一実施態様
を示す半部縦断正面図、第２図はその側面図、第
３図はその平面図、第４図はその分解斜視図であ
る。 Next, the device of this invention will be explained with reference to the drawings. FIG. 1 is a half longitudinal sectional front view showing one embodiment of the device of this invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is an exploded perspective view thereof.
第１〜第４図に示すように、下沓１０は、橋脚
（図示せず）の上面に、その四隅部においてアン
カーボルト１１で固定される四角状の金属製の基
板１２と、基板１２上に固定されたステンレス鋼
板１３とからなつている。 As shown in FIGS. 1 to 4, the lower shoe 10 includes a rectangular metal board 12 that is fixed to the top surface of a pier (not shown) at its four corners with anchor bolts 11, and It consists of a stainless steel plate 13 fixed to.
上沓１４は、橋桁（図示せず）の下面に、その
四隅部においてアンカーボルト１５に固定される
四角状の金属製の基板１６と、基板１６の下面に
固定された積層ゴム板１７と、積層ゴム板１７の
下面に固定された金属板１９とからなつており、
側板２０によつて一体的にボルト止めされてい
る。積層ゴム板１７は、薄鋼板１８を間に挟んだ
複数のゴム層１７ａ，１７ｂ，１７ｃからなつて
いる。このような構造の上沓１４の、橋桁軸線方
向の長さは、下沓１０の橋桁軸線方向の長さより
も短い。 The upper shoe 14 includes a square metal substrate 16 fixed to the anchor bolts 15 at its four corners on the lower surface of the bridge girder (not shown), and a laminated rubber plate 17 fixed to the lower surface of the substrate 16. It consists of a metal plate 19 fixed to the lower surface of a laminated rubber plate 17,
It is integrally bolted to the side plate 20. The laminated rubber plate 17 is made up of a plurality of rubber layers 17a, 17b, and 17c with a thin steel plate 18 sandwiched therebetween. The length of the upper shoe 14 in such a structure in the axial direction of the bridge girder is shorter than the length of the lower shoe 10 in the axial direction of the bridge girder.
上沓１４の下面には、例えばテフロン製の滑り
板２１が固定されている。滑り板２１は、下沓１
０の上面に固定されていてもよい。 A sliding plate 21 made of, for example, Teflon is fixed to the lower surface of the upper shoe 14. The sliding plate 21 is the lower shoe 1
0 may be fixed on the top surface of the 0.
下沓１０の基板１２における、橋桁の軸線と平
行する両側１２ａ，１２ａには、側部支承部材２
２，２２が固定されている。側部支承部材２２，
２２の各々は、基板１２に固定された基台２３
と、基台２３の上部にボルト２５で固定される逆
Ｌ字状の係合金具２４とからなつている。係合金
具２４のフランジ２４ａは、上沓１４における基
板１６の両側端に形成された凹段部２６に係合さ
れている。 On both sides 12a, 12a of the base plate 12 of the lower shoe 10, which are parallel to the axis of the bridge girder, side support members 2 are provided.
2 and 22 are fixed. side support member 22,
22 each has a base 23 fixed to the substrate 12.
and an inverted L-shaped engagement fitting 24 fixed to the upper part of the base 23 with bolts 25. The flange 24a of the engagement fitting 24 is engaged with a recessed step 26 formed at both ends of the base plate 16 of the upper shoe 14.
下沓１０の基板１２における、橋桁の軸線方向
の両側１２ｂ，１２ｂの端部上面には、両側１２
ｂ，１２ｂに沿つてストツパ２７が固定されてい
る。 On the upper surface of the end of both sides 12b, 12b in the axial direction of the bridge girder on the base plate 12 of the lower shoe 10, both sides 12 are provided.
A stopper 27 is fixed along b, 12b.
上述のような構造の下沓１０および上沓１４か
らなる支承装置によつて、橋桁を橋脚に支承す
る。このとき、前述したように、上沓１４の橋桁
軸線方向の長さは、下沓１０の橋桁軸線方向の長
さよりも短いから、第２図および第３図に示すよ
うに、下沓１０上において、上沓１４の金属板１
９と、下沓１０の基板両側１２ｂ，１２ｂに設け
られたストツパ２７との間には、間隙２８が生ず
る。 A bridge girder is supported on a bridge pier by a support device consisting of a lower shoe 10 and an upper shoe 14 having the structure described above. At this time, as described above, since the length of the upper shoe 14 in the axial direction of the bridge girder is shorter than the length of the lower shoe 10 in the axial direction of the bridge girder, as shown in FIGS. , the metal plate 1 of the upper shoe 14
A gap 28 is formed between the stopper 9 and the stopper 27 provided on both sides 12b of the base plate 12b of the lower shoe 10.
従つて、橋桁の乾燥およびクリープによる収縮
は、上沓１４を介して、上述の間隙２８によつて
吸収される。 Therefore, shrinkage due to drying and creep of the bridge girder is absorbed by the above-mentioned gap 28 via the upper shoe 14.
第５図は上沓固定後の状態を示す側面図、第６
図はその平面図である。第５図および第６図にお
いて、２９は、橋桁の収縮が間隙２８によつて吸
収された後に、上沓１４の金属板１９を下沓１０
に固定するための、間隙２８内に打ち込まれるく
さびである。 Figure 5 is a side view showing the state after the upper shoe is fixed;
The figure is a plan view thereof. 5 and 6, after the contraction of the bridge girder has been absorbed by the gap 28, the metal plate 19 of the upper shoe 14 is attached to the lower shoe 10.
This is a wedge driven into the gap 28 to secure it in place.
この考案は、上述のように構成されているの
で、橋桁の乾燥収縮、および、クリープによる橋
桁の収縮は、下沓１０の基板両側１２ｂ，１２ｂ
のストツパ２７と、上沓１４の金属板１９との間
に形成された間隙２８によつて吸収される。そし
て、上記の収縮が終了した後に、くさび２９，２
９によつて、上沓１４の金属板１９は下沓１０に
固定される。
Since this device is configured as described above, the drying shrinkage of the bridge girder and the shrinkage of the bridge girder due to creep can be prevented from occurring on both sides 12b of the lower shoe 10.
It is absorbed by the gap 28 formed between the stopper 27 and the metal plate 19 of the upper shoe 14. Then, after the above contraction is completed, the wedges 29, 2
9, the metal plate 19 of the upper shoe 14 is fixed to the lower shoe 10.
従つて、地震時等の大変形が生じたときの水平
力は、各橋脚に均等に分散されることになり、橋
脚の倒壊が生ずることはなく、また、一部の橋梁
の基礎を大きくする必要もない。 Therefore, when a large deformation occurs such as during an earthquake, the horizontal force is evenly distributed to each pier, preventing the pier from collapsing, and making it possible to enlarge the foundations of some bridges. There's no need.
以上述べたように、この考案によれば、複雑な
設計、計算を要することなく、簡単な構造によつ
て、乾燥およびクリープによつて生ずる、橋桁の
初期の収縮によるせん断変形を防止し、前記収縮
の終了後にゴム支承の機能を回復させることがで
きる工業上有用な効果が発揮される。
As described above, this invention prevents shear deformation due to initial shrinkage of bridge girders caused by drying and creep with a simple structure without requiring complicated design or calculation. An industrially useful effect is exhibited in that the function of the rubber bearing can be restored after the contraction has ended.
第１図はこの考案の装置の一実施態様を示す半
部縦断正面図、第２図はその側面図、第３図はそ
の平面図、第４図はその分解斜視図、第５図は上
沓固定後の状態を示す側面図、第６図はその平面
図、第７図は従来の装置を示す正面図、第８図は
橋桁のせん断変形発生状態を示す説明図である。
図面において、１……橋桁、２……橋脚、３…
…上沓、４……下沓、５……積層ゴム板、６……
薄鋼板、７……ゴム板、８，９……アンカーボル
ト、１０……下沓、１１，１５……アンカーボル
ト、１２，１６……基板、１３……ステンレス鋼
板、１４……上沓、１７……積層ゴム板、１８…
…薄鋼板、１９……金属板、２０……側板、２１
……滑り板、２２……側部支承部材、２３……基
台、２４……係合金具、２５……ボルト、２６…
…凹段部、２７……ストツパ、２８……間隙、２
９……くさび。
Fig. 1 is a half longitudinal front view showing an embodiment of the device of this invention, Fig. 2 is a side view thereof, Fig. 3 is a plan view thereof, Fig. 4 is an exploded perspective view thereof, and Fig. 5 is a top view. FIG. 6 is a side view showing the state after the shoe is fixed, FIG. 6 is a plan view thereof, FIG. 7 is a front view showing the conventional device, and FIG. 8 is an explanatory diagram showing the state in which shear deformation occurs in the bridge girder. In the drawing, 1... bridge girder, 2... bridge pier, 3...
...Upper shoe, 4...Lower shoe, 5...Laminated rubber plate, 6...
Thin steel plate, 7...Rubber plate, 8,9...Anchor bolt, 10...Lower shoe, 11,15...Anchor bolt, 12,16...Substrate, 13...Stainless steel plate, 14...Upper shoe, 17... Laminated rubber plate, 18...
...Thin steel plate, 19...Metal plate, 20...Side plate, 21
... Sliding plate, 22 ... Side support member, 23 ... Base, 24 ... Engagement fitting, 25 ... Bolt, 26 ...
...Concave step, 27...Stopper, 28...Gap, 2
9...Wedge.
Claims (1)
上に固定された金属板とからなる下沓と、 橋桁の下面に固定された基板と、前記基板の下
面に固定された積層ゴム板と、前記積層ゴム板の
下面に固定された金属板と、そして、前記基板、
前記積層ゴム板および前記金属板の、前記橋桁の
軸線と平行な両側面を、一体的に且つ取り外し可
能に締結する側板とからなる、橋桁軸線方向の長
さが前記下沓の橋桁軸線方向の長さよりも短い上
沓と、 前記下沓と前記上沓との間に、その何れか一方
に固定して設けられた滑り板と、 前記下沓の基板の、前記橋桁の軸線と平行な両
側に設けられた、前記上沓の基板の両側端に係合
する側部支承部材と、 前記下沓の基板の、前記橋桁の軸線方向の両側
端に設けられたストツパと、 前記橋桁の収縮を前記上沓を介して吸収するた
めの、前記ストツパと前記上沓の金属板との間に
形成された間〓と、そして、 前記橋桁の収縮が吸収された後の前記間〓内に
挿入し、前記上沓の金属板を前記下沓に固定する
ためのくさびとからなることを特徴とする、橋梁
用支承装置。[Claims for Utility Model Registration] A lower shoe consisting of a base plate fixed on a bridge pier, a metal plate fixed on the base plate, a base plate fixed on the lower surface of the bridge girder, and a lower shoe formed on the lower surface of the base plate. a fixed laminated rubber plate, a metal plate fixed to the lower surface of the laminated rubber plate, and the substrate;
The length in the axial direction of the bridge girder is comprised of the laminated rubber plate and the side plate that integrally and removably fastens both sides of the metal plate parallel to the axis of the bridge girder, and the length in the axial direction of the bridge girder is equal to that of the lower shoe. an upper shoe that is shorter than the length of the shoe; a sliding plate fixed to either one of the lower shoe and the upper shoe; and both sides of the base plate of the lower shoe parallel to the axis of the bridge girder. side support members that engage with both ends of the base plate of the upper shoe; stoppers provided on both ends of the base plate of the lower shoe in the axial direction of the bridge girder; A gap formed between the stopper and the metal plate of the upper shoe for absorption through the upper shoe, and a gap inserted into the gap after the contraction of the bridge girder has been absorbed. and a wedge for fixing the metal plate of the upper shoe to the lower shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3479988U JPH0512329Y2 (en) | 1988-03-16 | 1988-03-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3479988U JPH0512329Y2 (en) | 1988-03-16 | 1988-03-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01141805U JPH01141805U (en) | 1989-09-28 |
| JPH0512329Y2 true JPH0512329Y2 (en) | 1993-03-30 |
Family
ID=31261476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3479988U Expired - Lifetime JPH0512329Y2 (en) | 1988-03-16 | 1988-03-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0512329Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5413026B2 (en) * | 2009-07-30 | 2014-02-12 | 横浜ゴム株式会社 | Rubber bearing device |
| KR101256771B1 (en) * | 2009-12-25 | 2013-04-25 | 요코하마 고무 가부시키가이샤 | Rubber-made support device |
| JP5763379B2 (en) * | 2011-03-22 | 2015-08-12 | 株式会社Ｉｈｉインフラシステム | Cartridge-type bearing device and receptor structure for bearing device |
| JP2020153063A (en) * | 2019-03-18 | 2020-09-24 | 株式会社ビー・ビー・エム | Bearing structure with damage control function for bridge |
-
1988
- 1988-03-16 JP JP3479988U patent/JPH0512329Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01141805U (en) | 1989-09-28 |
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