JP2006070614A - Reinforcing structure of steel girder bridge - Google Patents

Reinforcing structure of steel girder bridge Download PDF

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JP2006070614A
JP2006070614A JP2004256930A JP2004256930A JP2006070614A JP 2006070614 A JP2006070614 A JP 2006070614A JP 2004256930 A JP2004256930 A JP 2004256930A JP 2004256930 A JP2004256930 A JP 2004256930A JP 2006070614 A JP2006070614 A JP 2006070614A
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steel girder
reinforcing structure
bridge
girder bridge
steel
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JP4405879B2 (en
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Akira Fukuda
暁 福田
Makoto Maruyama
誠 丸山
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CHIYODA ENGINEERING CONSULTANT
CHIYODA ENGINEERING CONSULTANTS CO Ltd
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CHIYODA ENGINEERING CONSULTANT
CHIYODA ENGINEERING CONSULTANTS CO Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcing structure of a steel girder bridge capable of improving workability in construction, by simplifying the construction, without sacrificing durability after reinforcement. <P>SOLUTION: This reinforcing structure 10 of the steel girder bridge 1 is constituted as a rigid-frame structure bridge by rigidly joining opposed end parts of adjacent steel girders 12 and a pier 11 for supporting these opposed end parts via a support 15 by reinforced concrete 18. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、鋼桁主桁連結による鋼桁橋の補強構造に関するものである。   The present invention relates to a steel girder bridge reinforcing structure by connecting steel girder main girders.

近年、交通車両の大型化に伴い、供用開始から相当な年月が経過して橋については補強工事が急務となっている。そして、従来一般的な鋼桁橋の補強構造として、鋼桁主桁連結工法による補強構造が知られている（例えば、特許文献１、図８参照。）。
特開平９−１３３１９号公報 In recent years, along with the increase in size of transportation vehicles, it has been urgently necessary to reinforce bridges after a considerable period of time has passed since the start of service. And the reinforcement structure by a steel girder main girder connection construction method is known as a reinforcement structure of a conventional general steel girder bridge (for example, refer patent document 1, FIG. 8).
JP-A-9-13319

特許文献１には、鋼桁橋の隣接する主桁の両端部側面に鋼板を添設し、この鋼板をボルトで取り付け、隣接する上記主桁同士を連結した鋼桁橋の補強構造が開示されている。   Patent Document 1 discloses a steel girder bridge reinforcement structure in which steel plates are attached to both side surfaces of adjacent main girders of a steel girder bridge, the steel plates are attached with bolts, and the adjacent main girders are connected to each other. ing.

上記特許文献１に記載の補強構造を採用すると、施行誤差による連結部前後の径間のウェブ、フランジ面のずれ等により、そのまま鋼板、即ち添設板を取り付けることができないことが多く、フィラープレートを用いて調整する必要や、補強材である添設板の切欠き加工が必要になる等の製作、施工面上の問題がある。また、この補強構造を採用すると、橋脚の上端部と主桁の端部下面との間に介在させる支承を鋼製支承からゴム支承に取り替える必要がある。このため、限られた狭い空間での作業、主桁のジャッキアップ時の補強等、作業性の悪い施工を余儀なくされるという問題もある。   When the reinforcing structure described in Patent Document 1 is adopted, a steel plate, that is, an attached plate cannot be attached as it is due to a web between the diameters before and after the connecting portion due to an enforcement error, a displacement of the flange surface, and the like. There are problems in production and construction, such as the need to make adjustments with the use of, and the need for notching the attached plate as a reinforcing material. When this reinforcing structure is adopted, it is necessary to replace the support interposed between the upper end of the pier and the lower surface of the end of the main girder from a steel support to a rubber support. For this reason, there is also a problem that work with poor workability such as work in a limited narrow space and reinforcement when jacking up the main girder is forced.

本発明は斯かる従来の問題をなくすことを課題とし、補強後の耐久性を犠牲にすることなく、施工の単純化、施工時の作業性の向上を可能とした鋼桁橋の補強構造を提供しようとするものである。     An object of the present invention is to eliminate the conventional problem and to provide a steel girder bridge reinforcement structure capable of simplifying construction and improving workability during construction without sacrificing durability after reinforcement. It is something to be offered.

上記課題を解決するために、第１発明は、隣り合う鋼桁の対向する端部と、この対向する端部を支承を介して支持する橋脚とを鉄筋コンクリートで剛接合することによりラーメン構造橋とすることを特徴とする鋼桁橋の補強構造。   In order to solve the above-mentioned problem, the first invention is to provide a rigid frame bridge by rigidly joining reinforced concrete between opposing ends of adjacent steel girders and a pier that supports the opposing ends via a support. Reinforced structure of steel girder bridge.

第２発明は、上記第１発明の構成に加えて、上記剛接合する鉄筋コンクリートを上記橋脚の柱部の下端まで巻立てた構成とした。   In the second invention, in addition to the structure of the first invention, the reinforced concrete to be rigidly joined is wound up to the lower end of the pillar portion of the pier.

第１発明に係る鋼桁橋の補強構造によれば、既設支承を埋設することになり、その撤去の必要がなく、鋼桁の持ち上げ作業もなくなり、施工が極めて単純化され、かつ作業性もよくなるとともに、鋼桁橋の耐久性を向上させることが可能になるという効果を奏する。   According to the reinforcing structure of the steel girder bridge according to the first invention, the existing support is buried, there is no need to remove it, the lifting work of the steel girder is eliminated, the construction is extremely simplified, and the workability is also improved. As well as improving, it is possible to improve the durability of the steel girder bridge.

第２発明に係る鋼桁橋の補強構造によれば、第１発明の効果に加えて、鋼桁橋の耐震性を向上させることが可能になるという効果を奏する。   According to the reinforcing structure of the steel girder bridge according to the second invention, in addition to the effect of the first invention, there is an effect that it is possible to improve the earthquake resistance of the steel girder bridge.

次に、本発明の実施形態を図面にしたがって説明する。
図１〜４は、鋼桁橋１に適用された本発明に係るその補強構造１０を示している。鋼桁橋１自体は既設のもので、そこには両端に図示しない橋台が構築され、この両橋台間に１または適宜間隔で複数の橋脚１１が立設されている。そして、橋台と橋脚１１との間、さらに橋脚１１が複数の場合、隣り合う橋脚１１間に鋼桁１２が架設されている。さらに詳しく言えば、橋台上端部上、或いは橋脚１１の柱部１３上に横たわる梁部１４上に、鋼製の支承１５を介して鋼桁１２が載置され、一つの橋脚１１はこの両側に延びる二つの鋼桁１２の対向する端部を支えている。また、鋼桁１２上には、床版１６が配設されている。なお、橋脚１１及び床版１５は鉄筋コンクリートにより形成されている。また、図中、１７はフーチングを示している。 Next, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a reinforcing structure 10 according to the present invention applied to a steel girder bridge 1. The steel girder bridge 1 itself is an existing one, and an unillustrated abutment is constructed at both ends, and a plurality of piers 11 are erected between the two abutments at one or an appropriate interval. And when there are a plurality of piers 11 between the abutment and the piers 11, steel girders 12 are installed between the adjacent piers 11. More specifically, a steel girder 12 is placed on the upper end portion of the abutment or on the beam portion 14 lying on the column portion 13 of the pier 11 via a steel support 15, and one pier 11 is placed on both sides thereof. It supports the opposite ends of the two steel girders 12 that extend. A floor slab 16 is disposed on the steel beam 12. The pier 11 and the floor slab 15 are made of reinforced concrete. In the figure, reference numeral 17 denotes footing.

この鋼桁橋１において、橋脚１１の柱部１３から、梁部１４上に支承１５を介して支持された鋼桁１２の対向する端部全体にわたって、鉄筋コンクリート１８を施し、支承１４を埋設した状態で、梁部１４と上記対向する端部を剛接合することにより補強構造１０が形成されており、図中クロスハッチングで示されている。そして、これにより元の鋼桁橋１はラーメン構造橋となっている。   In this steel girder bridge 1, the reinforced concrete 18 is applied over the entire opposite ends of the steel girder 12 supported on the beam portion 14 via the support 15 from the column portion 13 of the pier 11, and the support 14 is embedded. Thus, the reinforcing structure 10 is formed by rigidly joining the beam portion 14 and the opposite end portion, which are indicated by cross-hatching in the drawing. As a result, the original steel girder bridge 1 is a ramen structure bridge.

このように、この補強構造１０によれば、支承１５の撤去や取り替えが不要となり、限られた空間で鋼桁１２をジャッキアップする作業も不必要になり、施工の単純化、施工時の作業性の向上が可能となっている。また、橋の上下部をリジッドに一体化するラーメン構造化により橋の耐久性も向上し、この橋における走行性の改善、騒音、振動の低減も可能となっている。   As described above, according to the reinforcing structure 10, it is not necessary to remove or replace the support 15, and it is not necessary to jack up the steel girder 12 in a limited space. The improvement of the property is possible. In addition, the durability of the bridge is improved by the rigid frame structure that integrates the upper and lower parts of the bridge into a rigid structure, which makes it possible to improve the running performance of the bridge and reduce noise and vibration.

なお、図示する補強構造１０は、橋脚１１の柱部１３全体にわたって鉄筋コンクリート１８が巻立てられており、耐震性の向上が図られているが、本発明はこれに限るものでなく、この鉄筋コンクリート１８は橋脚１１の上部だけに施すようにしてもよい。   In the illustrated reinforcing structure 10, the reinforced concrete 18 is wound over the entire column portion 13 of the pier 11, and the seismic resistance is improved. However, the present invention is not limited to this, and the reinforced concrete 18 is not limited thereto. May be applied only to the upper part of the pier 11.

本発明に係る鋼桁橋の補強構造を一部破断して示す垂直に切った断面図である。It is sectional drawing cut | disconnected perpendicularly | vertically which shows the reinforcement structure of the steel girder bridge concerning this invention partially fractured | ruptured. 図１のII−II線断面図である。It is the II-II sectional view taken on the line of FIG. 図１のIII−III線断面図である。It is the III-III sectional view taken on the line of FIG. 図１のIV−IV線断面図である。It is the IV-IV sectional view taken on the line of FIG.

符号の説明Explanation of symbols

１ 鋼桁橋
１０ 補強構造
１１ 橋脚
１２ 鋼桁
１３ 柱部
１４ 梁部
１５ 支承
１６ 床版
１７ フーチング
１８ 鉄筋コンクリート
DESCRIPTION OF SYMBOLS 1 Steel girder bridge 10 Reinforcement structure 11 Bridge pier 12 Steel girder 13 Column part 14 Beam part 15 Bearing 16 Floor slab 17 Footing 18 Reinforced concrete

Claims (2)

隣り合う鋼桁の対向する端部と、この対向する端部を支承を介して支持する橋脚とを鉄筋コンクリートで剛接合することによりラーメン構造橋とすることを特徴とする鋼桁橋の補強構造。   A reinforcing structure for a steel girder bridge, characterized in that a rigid frame bridge is formed by rigidly joining reinforced concrete between opposing ends of adjacent steel girders and a bridge pier that supports the opposed ends via supports. 上記剛接合する鉄筋コンクリートを上記橋脚の柱部の下端まで巻立てたことを特徴とする請求項１に記載の鋼桁橋の補強構造。
The reinforcing structure for a steel girder bridge according to claim 1, wherein the reinforced concrete to be rigidly joined is wound up to the lower end of the column portion of the pier.
JP2004256930A 2004-09-03 2004-09-03 Steel girder bridge reinforcement method Active JP4405879B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009256938A (en) * 2008-04-15 2009-11-05 Railway Technical Res Inst Rebuilding method for existing bridge
JP2011058168A (en) * 2009-09-07 2011-03-24 Railway Technical Res Inst Method for repairing bridge
CN103015309A (en) * 2012-12-31 2013-04-03 中铁第四勘察设计院集团有限公司 Integral joint steel structure door type pier
JP2013155576A (en) * 2012-01-31 2013-08-15 East Japan Railway Co Structure for reinforcing bridge pier and method for reinforcing the same
CN114561867A (en) * 2022-03-10 2022-05-31 广州市市政工程设计研究总院有限公司 Festival segmentation self-reset pier of removable power consumption spare after shake

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104328748B (en) * 2014-11-18 2016-06-29 中铁大桥局武汉桥梁特种技术有限公司 The bracket end ruggedized construction of a kind of cantilever glider bridge and installation method thereof

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Publication number Priority date Publication date Assignee Title
JPH1096207A (en) * 1996-09-24 1998-04-14 Ishikawajima Harima Heavy Ind Co Ltd Continuing structure of simple girder bridge
JPH10152822A (en) * 1996-11-22 1998-06-09 Saeki Kensetsu Kogyo Kk Precast landing bridge structure and wharf construction method using the structure
JP2000319816A (en) * 1999-05-12 2000-11-21 Nippon Steel Corp Rigid connection structure of upper and lower composite members
JP2001090026A (en) * 1999-09-28 2001-04-03 Fumio Yamada Structure of arch bridge, formation method thereof and reinforcing method of bridge
JP2002332750A (en) * 2001-05-08 2002-11-22 Maeda Corp Aseismic reinforcing structure for reinforced concrete support column
JP2003253621A (en) * 2002-03-06 2003-09-10 Topy Ind Ltd Continuous beam structure for continuing existing simple beam bridge
JP2004156292A (en) * 2002-11-06 2004-06-03 Nippon Steel Corp Three dimensional rigid frame structure
JP2004211334A (en) * 2002-12-27 2004-07-29 Ps Mitsubishi Construction Co Ltd Reinforcing structure of steel bridge pier joint part

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1096207A (en) * 1996-09-24 1998-04-14 Ishikawajima Harima Heavy Ind Co Ltd Continuing structure of simple girder bridge
JPH10152822A (en) * 1996-11-22 1998-06-09 Saeki Kensetsu Kogyo Kk Precast landing bridge structure and wharf construction method using the structure
JP2000319816A (en) * 1999-05-12 2000-11-21 Nippon Steel Corp Rigid connection structure of upper and lower composite members
JP2001090026A (en) * 1999-09-28 2001-04-03 Fumio Yamada Structure of arch bridge, formation method thereof and reinforcing method of bridge
JP2002332750A (en) * 2001-05-08 2002-11-22 Maeda Corp Aseismic reinforcing structure for reinforced concrete support column
JP2003253621A (en) * 2002-03-06 2003-09-10 Topy Ind Ltd Continuous beam structure for continuing existing simple beam bridge
JP2004156292A (en) * 2002-11-06 2004-06-03 Nippon Steel Corp Three dimensional rigid frame structure
JP2004211334A (en) * 2002-12-27 2004-07-29 Ps Mitsubishi Construction Co Ltd Reinforcing structure of steel bridge pier joint part

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009256938A (en) * 2008-04-15 2009-11-05 Railway Technical Res Inst Rebuilding method for existing bridge
JP2011058168A (en) * 2009-09-07 2011-03-24 Railway Technical Res Inst Method for repairing bridge
JP2013155576A (en) * 2012-01-31 2013-08-15 East Japan Railway Co Structure for reinforcing bridge pier and method for reinforcing the same
CN103015309A (en) * 2012-12-31 2013-04-03 中铁第四勘察设计院集团有限公司 Integral joint steel structure door type pier
CN114561867A (en) * 2022-03-10 2022-05-31 广州市市政工程设计研究总院有限公司 Festival segmentation self-reset pier of removable power consumption spare after shake
CN114561867B (en) * 2022-03-10 2024-03-15 广州市市政工程设计研究总院有限公司 Sectional type self-resetting bridge pier with replaceable energy consumption piece after earthquake

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