JPH0738327Y2 - Lifting prevention support device for bridge girder - Google Patents
Lifting prevention support device for bridge girderInfo
- Publication number
- JPH0738327Y2 JPH0738327Y2 JP416792U JP416792U JPH0738327Y2 JP H0738327 Y2 JPH0738327 Y2 JP H0738327Y2 JP 416792 U JP416792 U JP 416792U JP 416792 U JP416792 U JP 416792U JP H0738327 Y2 JPH0738327 Y2 JP H0738327Y2
- Authority
- JP
- Japan
- Prior art keywords
- lifting prevention
- bridge girder
- prevention member
- anchor bar
- fixed
- 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 - Fee Related
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、コンクリート製橋桁を
地震発生時等において上揚しないように支承する装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting a concrete bridge girder so that it will not be lifted when an earthquake occurs.
【０００２】[0002]
【従来の技術】従来、橋桁の支承装置としては、実公平
３−２０３２７号公報により公表されているように、鋼
製アンカー棒の下部を支持台に埋込固定し、そのアンカ
ー棒の上部を被覆するアンカーキャップとアンカー棒と
の間にゴム製中心保持用パッキングを介在させ、前記ア
ンカーキャップをコンクリート製橋桁に埋込固定した構
造の支承装置が知られている。2. Description of the Related Art Conventionally, as a supporting device for a bridge girder, as disclosed in Japanese Utility Model Publication No. 3-20327, the lower part of a steel anchor rod is embedded and fixed in a support base, and the upper part of the anchor rod is fixed. There is known a bearing device having a structure in which a rubber center-holding packing is interposed between a covering anchor cap and an anchor rod, and the anchor cap is embedded and fixed in a concrete bridge girder.
【０００３】[0003]
【考案が解決しようとする課題】前記従来の橋桁の支承
装置の場合は、地震等が発生して橋桁に上揚力が作用し
たとき、橋桁が上方に移動する恐れがある。In the case of the conventional support device for a bridge girder, there is a possibility that the bridge girder may move upward when an uplift force acts on the bridge girder due to an earthquake or the like.
【０００４】[0004]
【課題を解決するための手段】前述の問題を有利に解決
するために、本考案の橋桁の上揚防止支承装置において
は、中間部にストッパー１を備えているアンカーバー２
の下部を、下部構造物３の上部に埋込固定し、橋桁４に
固定される上揚防止部材５を、前記ストッパー１の下部
においてアンカーバー２に嵌設し、前記ストッパー１と
上揚防止部材５との間に弾性パッキング６を介在させ、
前記アンカーバー２の上部を被覆するカバー筒体７の下
端部を、前記上揚防止部材５に接合し、前記アンカーバ
ー２の上部とカバー筒体７との間に弾性筒体８を介在さ
せ、前記上揚防止部材５とカバー筒体７とを橋桁４に埋
込固定した橋桁の上揚防止支承装置。In order to advantageously solve the above-mentioned problems, an anchor bar 2 having a stopper 1 at an intermediate portion is provided in a lifting prevention support device of a bridge girder of the present invention.
The lower part of the above is embedded and fixed in the upper part of the lower structure 3, and the lifting prevention member 5 fixed to the bridge girder 4 is fitted to the anchor bar 2 below the stopper 1, and the stopper 1 and the lifting prevention member 5 are attached. The elastic packing 6 is interposed between
The lower end of the cover cylinder 7 covering the upper part of the anchor bar 2 is joined to the lifting prevention member 5, and the elastic cylinder 8 is interposed between the upper part of the anchor bar 2 and the cover cylinder 7. A lifting support device for a bridge girder in which the lifting prevention member 5 and the cover cylinder 7 are embedded and fixed in the bridge girder 4.
【０００５】[0005]
【実施例】図５および図６は本考案の第１実施例におい
て用いられる上揚防止部材５を示すものであって、鋼板
９に橋桁４の長手方向に延長する長孔１０が設けられ、
前記鋼板９の上面に、長孔１０と同方向に延長する扁平
な鋼製筒体１１の下端部が溶接により固着され、かつ前
記鋼板９の上部には、鋼製筒体１１の外側において多数
の鋼製アンカー部材１２が溶接により固着されている。5 and 6 show a lifting prevention member 5 used in the first embodiment of the present invention, in which a steel plate 9 is provided with an elongated hole 10 extending in the longitudinal direction of a bridge girder 4,
The lower end of a flat steel cylinder 11 extending in the same direction as the long hole 10 is fixed to the upper surface of the steel plate 9 by welding, and a large number of steel plates 9 are formed on the upper surface of the steel plate 9 outside the steel cylinder 11. The steel anchor member 12 is fixed by welding.
【０００６】図７および図８は本考案の第１実施例にお
いて用いられるカバー筒体７を示すものであって、扁平
断面の合成樹脂製筒体１３の下端部の外周にフランジ１
４が設けられ、かつ両側の扁平外面の上部および下部
に、挿込孔１５を有する突出部１６が一体に設けられて
いる。FIGS. 7 and 8 show a cover cylinder 7 used in the first embodiment of the present invention, in which a flange 1 is formed on the outer periphery of the lower end of a synthetic resin cylinder 13 having a flat cross section.
4 is provided, and projecting portions 16 having insertion holes 15 are integrally provided on the upper and lower portions of the flat outer surfaces on both sides.
【０００７】図１ないし図４は本考案の第１実施例に係
る橋桁の上揚防止支承装置を示すものであって、円形断
面の鋼製アンカーバー２の中間部に、円環状板体からな
る鋼製ストッパー１が嵌合されて溶接により固着され、
そのストッパー１の下部において、前記アンカーバー２
にゴムリングからなる弾性パッキング６と上揚防止部材
５の長孔１０とが順次嵌設され、橋台または橋脚からな
る下部構造物３の上部に、アンカーバー２を挿入するた
めの挿入孔１７が設けられ、その挿入孔１７に挿入され
たアンカーバー２の下部と挿入孔１７との間に、セメン
トモルタル等の常温硬化性充填材１８が充填され、かつ
前記下部構造物３の上面と上揚防止部材５における鋼板
９の下面との間に、分割型のゴム板からなる弾性支承板
１９が挿入される。FIGS. 1 to 4 show a lifting prevention support device for a bridge girder according to a first embodiment of the present invention, in which an intermediate portion of a steel anchor bar 2 having a circular cross section is composed of an annular plate member. The steel stopper 1 is fitted and fixed by welding,
At the bottom of the stopper 1, the anchor bar 2
The elastic packing 6 made of a rubber ring and the elongated hole 10 of the lifting prevention member 5 are sequentially fitted to the above, and an insertion hole 17 for inserting the anchor bar 2 is provided at the upper part of the lower structure 3 made of abutment or pier. The room temperature curable filler 18 such as cement mortar is filled between the lower part of the anchor bar 2 inserted into the insertion hole 17 and the insertion hole 17, and the upper surface of the lower structure 3 and the lifting prevention member. An elastic support plate 19 made of a split rubber plate is inserted between the lower surface of the steel plate 9 and the lower surface of the steel plate 9.
【０００８】扁平断面のカバー筒体７内に、係止突起２
０の下部においてゴム製弾性筒体８が嵌入され、その弾
性筒体８はアンカーバー嵌合用中央凹面２１とアンカー
バー移動許容用側部空間２２とを備えている。前記弾性
筒体８の各中央凹面２１はアンカーバー２の上部に嵌合
され、かつカバー筒体７の下端のフランジ１４は上揚防
止部材５における鋼製筒体１１に嵌入され、前記カバー
筒体７の下部と上揚防止部材５における鋼製筒体１１と
の間にシール材２３が充填されている。A locking projection 2 is provided in the cover cylinder 7 having a flat cross section.
At the lower part of 0, a rubber elastic cylinder 8 is fitted, and the elastic cylinder 8 is provided with an anchor bar fitting central concave surface 21 and an anchor bar movement permitting side space 22. Each central concave surface 21 of the elastic tubular body 8 is fitted to the upper part of the anchor bar 2, and the flange 14 at the lower end of the cover tubular body 7 is fitted to the steel tubular body 11 of the lifting prevention member 5 to provide the cover tubular body. A seal material 23 is filled between the lower part of the coil 7 and the steel tubular body 11 of the lifting prevention member 5.
【０００９】カバー筒体７を囲む補強用スパイラル鉄筋
２４の上部および下部に屈折連設された挿込杆２５は、
カバー筒体７の上部および下部に設けられた挿込孔１５
に嵌挿され、次に橋桁４を構成するコンクリートが打設
される。The insertion rods 25, which are bent and connected to the upper and lower portions of the reinforcing spiral reinforcing bar 24 surrounding the cover cylinder 7,
Insertion holes 15 provided in the upper and lower parts of the cover cylinder 7
Then, the concrete forming the bridge girder 4 is placed.
【００１０】前記アンカーバー２から橋軸直角方向に離
れた位置において、下部構造物３と橋桁４との間に可動
支承体（図示を省略した）が介在され、橋桁４は下部構
造物３に対し橋軸方向に移動することができる。At a position away from the anchor bar 2 in the direction perpendicular to the bridge axis, a movable support (not shown) is interposed between the lower structure 3 and the bridge girder 4, and the bridge girder 4 is attached to the lower structure 3. On the other hand, it can move in the direction of the bridge axis.
【００１１】図１１および図１２は本考案の第２実施例
において用いられる上揚防止部材５を示すものであっ
て、鋼板９に円形の透孔２６が設けられると共に、鋼板
９の上面に円形の鋼製筒体１１の下端部が固着されてい
るが、その他の構成は第１実施例における上揚防止部材
５の場合と同様である。11 and 12 show a lifting prevention member 5 used in the second embodiment of the present invention, in which a steel plate 9 is provided with a circular through hole 26, and the steel plate 9 has a circular top hole. Although the lower end portion of the steel tubular body 11 is fixed, other configurations are the same as those of the lifting prevention member 5 in the first embodiment.
【００１２】図９および図１０は本考案の第２実施例に
係る橋桁の上揚防止支承装置を示すものであって、カバ
ー筒体７および弾性筒体８として円形断面のものが用い
られ、その弾性筒体８の外面に多数の溝２７が設けられ
ているが、その他の構成は第１実施例の場合と同様であ
る。第２実施例の場合は、アンカーバー２から橋軸直角
方向に離れた位置において、下部構造物３と橋桁４との
間に固定支承体（図示を省略した）が介在され、橋桁４
は下部構造物３に対し水平方向に移動しないように支承
される。9 and 10 show a lifting prevention support device for a bridge girder according to a second embodiment of the present invention, in which the cover cylinder 7 and the elastic cylinder 8 have a circular cross section. Although a large number of grooves 27 are provided on the outer surface of the elastic tubular body 8, the other configurations are the same as those in the first embodiment. In the case of the second embodiment, at a position apart from the anchor bar 2 in the direction perpendicular to the bridge axis, a fixed support (not shown) is interposed between the lower structure 3 and the bridge girder 4, and the bridge girder 4
Is supported so as not to move horizontally with respect to the substructure 3.
【００１３】各実施例の橋桁の上揚防止支承装置におい
て、橋桁４の撓み変形は弾性パッキング６および弾性支
承板１９の圧縮変形により許容され、かつ地震発生等に
より橋桁４の支承部に上向き移動力すなわち上揚力が作
用した場合は、橋桁４に固定された上揚防止部材５が弾
性パッキング６を介してストッパー１に係合するので、
橋桁４の上揚移動が阻止される。In the lifting prevention support device of each bridge girder, the bending deformation of the bridge girder 4 is allowed by the compressive deformation of the elastic packing 6 and the elastic support plate 19, and an upward moving force is applied to the bearing part of the bridge girder 4 due to an earthquake or the like. That is, when a lifting force is applied, the lifting prevention member 5 fixed to the bridge girder 4 engages with the stopper 1 via the elastic packing 6,
Lifting movement of bridge girder 4 is prevented.
【００１４】[0014]
【考案の効果】本考案によれば、中間部にストッパー１
を備えているアンカーバー２の下部を、下部構造物３の
上部に埋込固定し、橋桁４に固定される上揚防止部材５
を、前記ストッパー１の下部においてアンカーバー２に
嵌設し、前記ストッパー１と上揚防止部材５との間に弾
性パッキング６を介在させ、前記アンカーバー２の上部
を被覆するカバー筒体７の下端部を、前記上揚防止部材
５に接合し、前記アンカーバー２の上部とカバー筒体７
との間に弾性筒体８を介在させ、前記上揚防止部材５と
カバー筒体７とを橋桁４に埋込固定したので、地震力等
によって橋桁４が上向きに移動するのを簡単な手段によ
って防止することができ、かつストッパー１の下面と上
揚防止部材５との間に弾性パッキング６が介在されてい
るので、橋桁４の撓みを許容することができる。According to the present invention, the stopper 1 is provided at the middle portion.
The lower part of the anchor bar 2 provided with is embedded and fixed in the upper part of the lower structure 3, and is fixed to the bridge girder 4.
Is fitted to the anchor bar 2 at the lower part of the stopper 1, and the elastic packing 6 is interposed between the stopper 1 and the lifting prevention member 5, and the lower end of the cover cylinder body 7 covering the upper part of the anchor bar 2. Part is joined to the lifting prevention member 5, and the upper portion of the anchor bar 2 and the cover cylinder 7 are joined together.
Since the elastic tubular body 8 is interposed between and, the lifting prevention member 5 and the cover tubular body 7 are embedded and fixed in the bridge girder 4, it is possible to easily move the bridge girder 4 upward by seismic force or the like. Since the elastic packing 6 is interposed between the lower surface of the stopper 1 and the lifting prevention member 5, the flexure of the bridge girder 4 can be allowed.
【図１】本考案の第１実施例に係る橋桁の上揚防止支承
装置を示す一部切欠縦断正面図である。FIG. 1 is a partially cutaway vertical front view showing a lifting support bearing device for a bridge girder according to a first embodiment of the present invention.
【図２】図１の一部を拡大して示す縦断正面図である。FIG. 2 is a vertical sectional front view showing a part of FIG. 1 in an enlarged manner.
【図３】図２の一部を拡大して示す縦断正面図である。FIG. 3 is a vertical sectional front view showing a part of FIG. 2 in an enlarged manner.
【図４】図２のＡ−Ａ線拡大断面図である。FIG. 4 is an enlarged cross-sectional view taken along the line AA of FIG.
【図５】本考案の第１実施例において用いられる上揚防
止部材を示す平面図である。FIG. 5 is a plan view showing a lifting prevention member used in the first embodiment of the present invention.
【図６】図５に示す上揚防止部材の一部縦断側面図であ
る。FIG. 6 is a partially longitudinal side view of the lifting prevention member shown in FIG.
【図７】本考案の第１実施例において用いられるカバー
筒体を示す一部切欠縦断正面図である。FIG. 7 is a partially cutaway vertical front view showing a cover cylinder used in the first embodiment of the present invention.
【図８】図７のＢ−Ｂ線拡大断面図である。FIG. 8 is an enlarged cross-sectional view taken along the line BB of FIG.
【図９】本考案の第２実施例に係る橋桁の上揚防止支承
装置の一部を示す縦断正面図である。FIG. 9 is a vertical sectional front view showing a part of the lifting prevention supporting device of the bridge girder according to the second embodiment of the present invention.
【図１０】図９のＣ−Ｃ線断面図である。10 is a cross-sectional view taken along the line CC of FIG.
【図１１】本考案の第２実施例において用いられる上揚
防止部材を示す平面図である。FIG. 11 is a plan view showing a lifting prevention member used in the second embodiment of the present invention.
【図１２】図１１に示す上揚防止部材の縦断側面図であ
る。12 is a vertical cross-sectional side view of the lifting prevention member shown in FIG.
１ ストッパー ２ アンカーバー ３ 下部構造物 ４ 橋桁 ５ 上揚防止部材 ６ 弾性パッキング ７ カバー筒体 ８ 弾性筒体 ９ 鋼板 １０ 長孔 １１ 鋼製筒体 １２ アンカー部材 １３ 合成樹脂製筒体 １５ 挿込孔 １６ 突出部 １７ 挿入孔 １８ 常温硬化性充填材 １９ 弾性支承板 ２０ 係止突起 ２１ 中央凹面 ２２ 側部空間 ２３ シール材 ２４ スパイラル鉄筋 ２５ 挿込杆 ２６ 透孔 DESCRIPTION OF SYMBOLS 1 Stopper 2 Anchor bar 3 Lower structure 4 Bridge girder 5 Lifting prevention member 6 Elastic packing 7 Cover cylinder 8 Elastic cylinder 9 Steel plate 10 Long hole 11 Steel cylinder 12 Anchor member 13 Synthetic resin cylinder 15 Insertion hole 16 Protrusion 17 Insertion hole 18 Room temperature hardening filler 19 Elastic support plate 20 Locking protrusion 21 Central concave surface 22 Side space 23 Sealing material 24 Spiral rebar 25 Inserting rod 26 Through hole
Claims (1)
カーバー２の下部を、下部構造物３の上部に埋込固定
し、橋桁４に固定される上揚防止部材５を、前記ストッ
パー１の下部においてアンカーバー２に嵌設し、前記ス
トッパー１と上揚防止部材５との間に弾性パッキング６
を介在させ、前記アンカーバー２の上部を被覆するカバ
ー筒体７の下端部を、前記上揚防止部材５に接合し、前
記アンカーバー２の上部とカバー筒体７との間に弾性筒
体８を介在させ、前記上揚防止部材５とカバー筒体７と
を橋桁４に埋込固定した橋桁の上揚防止支承装置。1. A lower portion of an anchor bar 2 having a stopper 1 at an intermediate portion thereof is embedded and fixed in an upper portion of a lower structure 3, and a lifting prevention member 5 fixed to a bridge girder 4 is attached to a lower portion of the stopper 1. At the anchor bar 2, the elastic packing 6 is provided between the stopper 1 and the lifting prevention member 5.
The lower end portion of the cover tubular body 7 covering the upper portion of the anchor bar 2 is joined to the lifting prevention member 5, and the elastic tubular body 8 is provided between the upper portion of the anchor bar 2 and the cover tubular body 7. A support device for lifting prevention of bridge girders in which the lifting prevention member 5 and the cover cylinder 7 are embedded and fixed in the bridge girder 4 with the interposition of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP416792U JPH0738327Y2 (en) | 1992-01-10 | 1992-01-10 | Lifting prevention support device for bridge girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP416792U JPH0738327Y2 (en) | 1992-01-10 | 1992-01-10 | Lifting prevention support device for bridge girder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0557006U JPH0557006U (en) | 1993-07-30 |
| JPH0738327Y2 true JPH0738327Y2 (en) | 1995-08-30 |
Family
ID=11577187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP416792U Expired - Fee Related JPH0738327Y2 (en) | 1992-01-10 | 1992-01-10 | Lifting prevention support device for bridge girder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0738327Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4731434B2 (en) * | 2006-09-14 | 2011-07-27 | 前田建設工業株式会社 | Construction method of viaduct bearing and viaduct bearing |
-
1992
- 1992-01-10 JP JP416792U patent/JPH0738327Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0557006U (en) | 1993-07-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |