JPH1096207A - Continuing structure of simple girder bridge - Google Patents
Continuing structure of simple girder bridgeInfo
- Publication number
- JPH1096207A JPH1096207A JP27304496A JP27304496A JPH1096207A JP H1096207 A JPH1096207 A JP H1096207A JP 27304496 A JP27304496 A JP 27304496A JP 27304496 A JP27304496 A JP 27304496A JP H1096207 A JPH1096207 A JP H1096207A
- Authority
- JP
- Japan
- Prior art keywords
- simple girder
- bridge
- girder
- concrete member
- bridges
- 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.)
- Pending
Links
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- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、単純桁橋が連続的
に配設されて成る高架橋の前記単純桁橋を接続して連続
化する単純桁橋の連続化構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous structure of a simple girder bridge for connecting and connecting the simple girder bridges of a viaduct in which simple girder bridges are continuously arranged.
【０００２】[0002]
【従来の技術】都市圏等で自動車用道路として多く建設
されている高架橋として、単純桁橋が連続的に配設され
た構造のものがある。2. Description of the Related Art A viaduct often constructed as an automobile road in an urban area or the like has a structure in which simple girder bridges are continuously arranged.
【０００３】これは、図５に概念図を示すように、所定
間隔で立設された橋脚４の間に、それぞれ単純桁橋１が
架設されて構成される。単純桁橋１は、その床版１Ａの
下面にＩ形鋼による主桁１Ｂが縦方向に設けられてお
り、この主桁が支承３を介して橋脚４に支持される。[0005] As shown in a conceptual diagram of FIG. 5, a simple girder bridge 1 is constructed between bridge piers 4 erected at predetermined intervals. In the simple girder bridge 1, a main girder 1B made of I-shaped steel is provided in the vertical direction on the lower surface of the floor slab 1A, and this main girder is supported on a pier 4 via a bearing 3.
【０００４】支承３は、通常、一方端がヒンジ支点（３
Ｆ）とされると共に、他方が可動支点（３Ｍ）とされ、
隣接する単純桁橋１の床版１Ａの目地部には、縦方向の
相対変位を許容する金属製の伸縮継手５が介設される。[0004] The bearing 3 usually has a hinge fulcrum (3) at one end.
F) and the other is a movable fulcrum (3M),
An expansion joint 5 made of metal that allows relative displacement in the vertical direction is interposed at the joint of the floor slab 1A of the adjacent simple girder bridge 1.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記の
ごとき構成の単純桁橋が直列に連続して配設されて成る
高架橋では、伸縮継手による接続部の連続性が悪く、走
行車両が接続部（伸縮継手）を乗り越える際に車両及び
桁橋に衝撃が作用し、このために車両側は乗り心地が悪
く、桁橋側はその衝撃による振動によって劣化が促進さ
れるという問題があった。However, in a viaduct in which the simple girder bridges constructed as described above are arranged continuously in series, the continuity of the connection part by the expansion joint is poor, and the traveling vehicle is connected to the connection part ( An impact acts on the vehicle and the girder bridge when the vehicle crosses the expansion joint), so that the vehicle side has a poor ride comfort, and the girder bridge side has a problem that deterioration due to the vibration caused by the impact is accelerated.
【０００６】このような問題は、単純桁橋を連結して連
続化することで防ぐことができ、そのために隣接する単
純桁橋の主桁であるＩ形鋼の腹板同士を添接板によって
接合すると共に床版間の目地にコンクリートを充填する
ことが考えられる。ところが、連続桁ではその支点部位
に負のモーメントが作用するものであり、このような結
合構造では橋脚による支点部位で結合されて連続化され
るためにその結合部位に負のモーメントが作用し、これ
によって床版間の目地に充填したコンクリートに亀裂を
生じてしまうために現実的ではないものである。[0006] Such a problem can be prevented by connecting the simple girder bridges to make them continuous, and for this purpose, the I-shaped steel plates, which are the main girder of the adjacent simple girder bridges, are connected to each other by an attachment plate. It is conceivable that the joints between the floor slabs are filled with concrete while being joined. However, in a continuous girder, a negative moment acts on the fulcrum part, and in such a joint structure, a negative moment acts on the joint part because the fulcrum part is connected and continuous at the fulcrum part by the pier, This causes cracks in the concrete filled in the joints between the floor slabs, which is not practical.
【０００７】本発明は、上記課題を解決するためになさ
れたものであって、単純桁橋を強固に連結して連続桁橋
と成し得、伸縮継手が無く円滑に連続して車両の走行性
が良く振動による劣化も抑制することのできる単純桁橋
の連続化構造を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and a simple girder bridge can be firmly connected to form a continuous girder bridge. It is an object of the present invention to provide a continuous structure of a simple girder bridge which has good performance and can suppress deterioration due to vibration.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成する本発
明に係る単純桁橋の連続化構造は、単純桁橋が直列に連
続して配設されて成る高架橋の、隣接する前記単純桁橋
を接続連続化するものであって、隣接する前記単純桁橋
が、前記両単純桁橋の桁配設域内に打設されて前記両単
純桁橋に亘って連続する結合コンクリート部材によって
結合されて連続化されていることを特徴とする。The continuation structure of a simple girder bridge according to the present invention which achieves the above object is provided by a viaduct that is adjacent to the simple girder bridge in which the simple girder bridges are arranged continuously in series. Wherein the adjacent simple girder bridges are cast in the girder arrangement area of the two simple girder bridges, and are connected by a connecting concrete member continuous over the two simple girder bridges. It is characterized by being continuous.
【０００９】[0009]
【発明の実施の形態】以下添付図面を参照して本発明の
実施の形態を説明する。図１は本発明に係る単純桁橋の
連続化構造の一構成例によって連続化された高架橋の連
続化部位の縦断面図，図２はそのＡ−Ａ断面図，図３は
図１のＢ−Ｂ断面図である。尚、本構成例は単純桁橋が
直列に連続して配設されて成る高架橋の、単純桁橋１０
と単純桁橋１０′の目地部に追加施工して連続化する例
である。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional view of a continuous portion of a viaduct that has been made continuous by one configuration example of a continuous structure of a simple girder bridge according to the present invention, FIG. 2 is a sectional view taken along line AA, and FIG. It is -B sectional drawing. In this configuration example, a simple girder bridge 10 of a viaduct in which simple girder bridges are continuously arranged in series.
This is an example in which additional construction is performed at the joint of the simple girder bridge 10 'to make it continuous.
【００１０】単純桁橋１０と単純桁橋１０′とは、床版
１１，１１′の裏面側の主桁配設域に打設充填された結
合コンクリート部材２０によって結合されている。以
下、各部を詳細に説明するが、両単純桁橋１０，１０′
は対称であるために、特に必要のある場合を除いて図中
左側の単純桁橋１０について説明し、図中右側の単純桁
橋１０′の各部は単純桁橋１０と同符号にダッシ
ュ（′）を加えた符号を付して説明を省略する。The simple girder bridge 10 and the simple girder bridge 10 'are joined by a joint concrete member 20 cast and filled in the main girder arrangement area on the back side of the floor slabs 11, 11'. Hereinafter, each part will be described in detail.
Are symmetrical, so that the simple girder bridge 10 on the left side in the figure will be described except where particularly necessary, and each part of the simple girder bridge 10 'on the right side in the figure will have a dash (' ) Is added and the description is omitted.
【００１１】単純桁橋１０は、床版１１の下面側にＩ形
鋼による３本の主桁１２が縦方向（当該橋梁の延設方
向）に配設されると共に、これら主桁１２の間に直交す
る横桁１３が所定間隔で配設されている。In the simple girder bridge 10, three main girder 12 made of I-shaped steel are disposed in the vertical direction (extending direction of the bridge) on the lower surface side of the floor slab 11, and between the main girder 12. Are arranged at predetermined intervals.
【００１２】結合コンクリート部材２０は、両単純桁橋
１０，１０′の（床版１１，１１′の）対向する端面か
ら所定距離の位置に主桁１２と直交して配設された端面
型枠板１４と、これら両単純桁橋１０，１０′の端面型
枠板１４，１４′と主桁１２に囲まれた領域の下側開口
部に配設された底面型枠板１５とによって構成された直
方体状の箱形の内部に、コンクリートが打設充填される
ことによって形成されている。The joint concrete member 20 is an end face formwork which is disposed orthogonal to the main girder 12 at a predetermined distance from the opposing end faces (of the floor slabs 11, 11 ') of the two simple girder bridges 10, 10'. A plate 14 and end form plates 14 and 14 'of both of the simple girder bridges 10 and 10' and a bottom form plate 15 disposed in a lower opening of a region surrounded by the main girder 12. It is formed by pouring and filling concrete inside a rectangular parallelepiped box.
【００１３】端面型枠板１４は、その両側端縁でブラケ
ット金具１６を介して主桁１２の腹板に装着されてお
り、その配設位置は、本構成例では後述する追加施工以
前の支承位置と対応する位置（その真上）に配設された
横桁１３より外側（中心から離間する側）に設定されて
いる。The end form plate 14 is attached to the belly plate of the main girder 12 via brackets 16 at both side edges thereof. It is set outside (on the side away from the center) the cross beam 13 disposed at the position (directly above) corresponding to the position.
【００１４】底面型枠板１５は、左右両側の主桁１２の
下フランジの上側に載置された状態で配設されている。The bottom form plate 15 is placed above the lower flanges of the main girders 12 on both left and right sides.
【００１５】コンクリートの打設は、両床版１１，１
１′の間の目地部を介して行われ、結合コンクリート部
材２０と目地を埋める目地材は一体に形成され、その表
面は床版１１，１１′の表面と平坦に形成されている。The concrete is cast on both floor slabs 11 and 1
The joint concrete member 20 and the joint material filling the joint are formed integrally, and the surface thereof is formed flat with the surfaces of the floor slabs 11 and 11 '.
【００１６】上記構成により、結合コンクリート部材２
０は横桁１３が内挿された状態で固形化しており、この
結合コンクリート部材２０によって両単純桁橋１０，１
０′は結合一体化されているものである。With the above configuration, the combined concrete member 2
0 is solidified with the cross girder 13 inserted therein.
0 'is a unit integrated and connected.
【００１７】この結合コンクリート部材２０の当該橋梁
の延設方向中央（目地部の真下）には、固定支承３０が
配設され、結合コンクリート部材２０によって結合され
た連続桁はこの固定支承３０を介して橋脚４０に支持さ
れている。この固定支承３０は、橋梁の幅方向には両側
端近傍にそれぞれ配設されている（即ち固定支承３０は
二カ所）ものである。尚、固定支承３０は必要に応じて
中央にも配設して三カ所とする等適宜変更可能である。A fixed bearing 30 is disposed at the center of the connecting concrete member 20 in the extending direction of the bridge (immediately below the joint), and a continuous girder joined by the connecting concrete member 20 is connected via the fixed bearing 30. Supported by the pier 40. The fixed bearings 30 are disposed near both ends in the width direction of the bridge (that is, two fixed bearings 30). Incidentally, the fixed bearing 30 can be appropriately changed, for example, by being arranged at the center as needed to have three places.
【００１８】ここで、本構成例は前述のごとく単純桁橋
１０，１０′が直列に連続して配設されて成る既設の高
架橋に追加施工して連続化するものであり、追加施工以
前は図１中想像線で示すように、単純桁橋１０の主桁１
２が可動支承３１を介して、単純桁橋１０′の主桁１
２′が固定支承３１′を介して、それぞれ橋脚４０に支
持されているが、そのままの支承構造で連続化したので
は各支承３１，３１′に均等な荷重が作用する安定的な
支持ができない虞があり、これら支承３１，３１′に換
えて結合コンクリート部材２０の当該橋梁の延設方向中
央で、固定支承３０を介して支持するようになっている
ものである。固定支承３０による支持位置は、主桁１２
の下側に限らず結合コンクリート部材２０の下面中で任
意に設定することが可能であり、その設置は結合コンク
リート部材２０が固化して単純桁橋１０，１０′の連続
化が完了した後、既存の支承３１，３１′と異なる所定
位置に配設し、既存の支承３１，３１′を除去すること
で容易に行うことができる。Here, in this configuration example, as described above, the simple girder bridges 10 and 10 'are additionally constructed on the existing viaduct in which the simple girder bridges 10 and 10' are continuously arranged in series, and are continuously connected. As shown by the imaginary line in FIG.
2 is the main girder 1 of the simple girder bridge 10 'via the movable bearing 31
2 'are supported by the piers 40 via the fixed bearings 31'. However, if the bearings are continuous with the same supporting structure, stable support in which an even load acts on each bearing 31, 31 'cannot be achieved. There is a danger that instead of the bearings 31 and 31 ', the connecting concrete member 20 is supported via the fixed bearing 30 at the center of the bridge in the extending direction of the bridge. The support position by the fixed bearing 30 is the main girder 12
It is possible to set arbitrarily in the lower surface of the combined concrete member 20 without being limited to the lower side. After the combined concrete member 20 is solidified and the continuation of the simple girder bridges 10 and 10 'is completed, This can be easily performed by disposing the bearings at predetermined positions different from the existing bearings 31 and 31 'and removing the existing bearings 31 and 31'.
【００１９】而して、上記のごとき結合コンクリート部
材２０による単純桁橋１０，１０′の連続化構造によれ
ば、単純桁橋１０，１０′が強固な結合コンクリート部
材２０によって結合されると共に、当該結合コンクリー
ト部材２０が固定支承３０を介して橋脚４０に支持され
ているため、作用する負のモーメントに結合コンクリー
ト部材２０が抗して目地部への亀裂の発生を防ぐ。これ
により、良好な連続性を保持できるために車両の走行性
が良く、車両通過時の振動が軽減されると共に生じた振
動は結合コンクリート部材２０に吸収されるため劣化が
抑制されるものである。According to the continuation structure of the simple girder bridges 10 and 10 'by the connecting concrete members 20 as described above, the simple girder bridges 10 and 10' are connected by the strong connecting concrete members 20, Since the connecting concrete member 20 is supported on the pier 40 via the fixed bearing 30, the connecting concrete member 20 resists a negative moment acting on the connecting concrete member 20, thereby preventing the joint from cracking. As a result, good continuity can be maintained, so that the traveling performance of the vehicle is good, vibrations when passing through the vehicle are reduced, and the generated vibrations are absorbed by the combined concrete member 20, so that deterioration is suppressed. .
【００２０】尚、上記構成は結合コンクリート部材２０
は、横桁１３が内挿されることで両単純桁橋１０，１
０′を結合しているが、内挿して結合に寄与する適当な
構造材が存在しない場合やより強固に結合したい場合に
は、図４に示すように、底面型枠板１５の上面にジベル
１５を立設すると共に主桁１２の下フランジにボルトに
よって締着固定し、更に、床版１１の下面にジベル１７
Ａが立設された結合板１７を溶接や締着によって固定し
てコンクリートを打設充填して結合コンクリート部材２
０を形成することで、強固な結合状態とすることができ
る。Incidentally, the above-mentioned construction is the same as that of the bonded concrete member 20.
Means that both simple girder bridges 10, 1
0 'is connected, but when there is no suitable structural material that contributes to the connection by interpolation or when it is desired to connect more firmly, as shown in FIG. 15 and fixed to the lower flange of the main girder 12 with bolts.
A is fixed by welding or fastening the connecting plate 17 on which A is erected, and concrete is poured and filled to form the connecting concrete member 2.
By forming 0, a strong bonding state can be obtained.
【００２１】更に、上記構成例は既設の単純桁橋１０，
１０′を連続化する例を示したが、新規の連続桁橋に本
願構成を適用しても良いことは言うまでもない。Further, the above configuration example is based on the existing simple girder bridge 10,
Although an example in which 10 'is made continuous has been described, it is needless to say that the present application may be applied to a new continuous girder bridge.
【００２２】[0022]
【発明の効果】以上述べたように、本願発明に係る単純
桁橋の連続化構造によれば、単純桁橋を結合コンクリー
ト部材によって結合することにより、良好な連続性を有
して強固に連続化することができ、車両の走行性が良く
なり、車両通過時の振動が軽減されると共に生じた振動
は結合コンクリート部材に吸収されるため劣化が抑制さ
れるものである。また、結合コンクリート部材による連
続化部位を支承を介して橋脚に支持することで作用する
負のモーメントには、強固な結合コンクリート部材が抗
して目地部への亀裂の発生を防ぐことができるものであ
る。As described above, according to the continuous structure of the simple girder bridge according to the present invention, the simple girder bridge is connected by the connecting concrete members, so that it has good continuity and strong continuity. As a result, the traveling performance of the vehicle is improved, the vibration when passing through the vehicle is reduced, and the generated vibration is absorbed by the joint concrete member, so that the deterioration is suppressed. In addition, strong joint concrete members can resist the negative moment acting by supporting the continuous part by the joint concrete member on the pier via the bearing, and can prevent the occurrence of cracks in joints. It is.
【図１】本発明に係る単純桁橋の連続化構造の一構成例
によって連続化された高架橋の連続化部位の縦断面図で
ある。FIG. 1 is a longitudinal sectional view of a continuous portion of a viaduct that has been made continuous by one configuration example of a simple girder bridge continuous structure according to the present invention.
【図２】図１のＡ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】図１のＢ−Ｂ断面図である。FIG. 3 is a sectional view taken along line BB of FIG. 1;
【図４】本発明に係る単純桁橋の連続化構造の異なる構
成例の縦断面図である。FIG. 4 is a longitudinal sectional view of a different configuration example of a continuous structure of a simple girder bridge according to the present invention.
【図５】従来例としての単純桁橋の概念構成図である。FIG. 5 is a conceptual configuration diagram of a simple girder bridge as a conventional example.
１０，１０′ 単純桁橋 １４ 端面型枠板 １５ 底面型枠板 ２０ 結合コンクリート部材 10,10 'simple girder bridge 14 end formwork plate 15 bottom formwork plate 20 combined concrete members
Claims (2)
る高架橋の、隣接する前記単純桁橋を接続連続化するも
のであって、 隣接する前記単純桁橋が、前記両単純桁橋の桁配設域内
に打設されて前記両単純桁橋に亘って連続する結合コン
クリート部材によって結合されて連続化されていること
を特徴とする単純桁橋の連続化構造。1. A viaduct comprising a series of simple girder bridges arranged in series to connect and connect adjacent simple girder bridges, wherein the adjacent simple girder bridges are connected to the two simple girder bridges. A continuous structure of a simple girder bridge, which is cast into a girder arrangement area of the bridge and is connected and connected by a continuous connecting concrete member across the two simple girder bridges.
設域に主桁と直交して配設された端面型枠板と、前記主
桁の下面と略面一に配設された底面型枠板とによって囲
まれた箱状の空間内にコンクリートが打設充填されて形
成されていることを特徴とする請求項１に記載の単純桁
橋の連続化構造。2. The combined concrete member according to claim 1, wherein the end formwork plate is disposed in the girder arrangement area at right angles to the main girder, and a bottom formwork disposed substantially flush with a lower surface of the main girder. The continuous structure of a simple girder bridge according to claim 1, wherein concrete is cast and filled in a box-shaped space surrounded by the plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27304496A JPH1096207A (en) | 1996-09-24 | 1996-09-24 | Continuing structure of simple girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27304496A JPH1096207A (en) | 1996-09-24 | 1996-09-24 | Continuing structure of simple girder bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1096207A true JPH1096207A (en) | 1998-04-14 |
Family
ID=17522390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27304496A Pending JPH1096207A (en) | 1996-09-24 | 1996-09-24 | Continuing structure of simple girder bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1096207A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003253621A (en) * | 2002-03-06 | 2003-09-10 | Topy Ind Ltd | Continuous beam structure for continuing existing simple beam bridge |
| KR20030075455A (en) * | 2002-03-19 | 2003-09-26 | 동양종합건업 주식회사 | Method for constructing multi-span continuous preflex composite bridge or represtressed preflex composite bridge using single shoe device |
| JP2006070614A (en) * | 2004-09-03 | 2006-03-16 | Chiyoda Engineering Consultants Co Ltd | Reinforcing structure of steel girder bridge |
| JP2007247225A (en) * | 2006-03-15 | 2007-09-27 | Oriental Construction Co Ltd | Continuous girder structure formed of a plurality of simple girder bridges, and construction method |
| JP2017172226A (en) * | 2016-03-24 | 2017-09-28 | 公益財団法人鉄道総合技術研究所 | Joining structure of steel girder and joining method of steel girder |
| CN110983983A (en) * | 2019-12-20 | 2020-04-10 | 同济大学建筑设计研究院(集团)有限公司 | Construction method of fixed end beam and fixed end beam structure |
-
1996
- 1996-09-24 JP JP27304496A patent/JPH1096207A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003253621A (en) * | 2002-03-06 | 2003-09-10 | Topy Ind Ltd | Continuous beam structure for continuing existing simple beam bridge |
| KR20030075455A (en) * | 2002-03-19 | 2003-09-26 | 동양종합건업 주식회사 | Method for constructing multi-span continuous preflex composite bridge or represtressed preflex composite bridge using single shoe device |
| JP2006070614A (en) * | 2004-09-03 | 2006-03-16 | Chiyoda Engineering Consultants Co Ltd | Reinforcing structure of steel girder bridge |
| JP2007247225A (en) * | 2006-03-15 | 2007-09-27 | Oriental Construction Co Ltd | Continuous girder structure formed of a plurality of simple girder bridges, and construction method |
| JP2017172226A (en) * | 2016-03-24 | 2017-09-28 | 公益財団法人鉄道総合技術研究所 | Joining structure of steel girder and joining method of steel girder |
| CN110983983A (en) * | 2019-12-20 | 2020-04-10 | 同济大学建筑设计研究院(集团)有限公司 | Construction method of fixed end beam and fixed end beam structure |
| CN110983983B (en) * | 2019-12-20 | 2021-11-16 | 同济大学建筑设计研究院(集团)有限公司 | Construction method of fixed end beam and fixed end beam structure |
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