JPH09203011A - Reconstruction work of short-span over-road bridge or overbridge into long-span bridge - Google Patents

Reconstruction work of short-span over-road bridge or overbridge into long-span bridge

Info

Publication number
JPH09203011A
JPH09203011A JP8010978A JP1097896A JPH09203011A JP H09203011 A JPH09203011 A JP H09203011A JP 8010978 A JP8010978 A JP 8010978A JP 1097896 A JP1097896 A JP 1097896A JP H09203011 A JPH09203011 A JP H09203011A
Authority
JP
Japan
Prior art keywords
girders
bridge
girder
construction
overpass
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.)
Granted
Application number
JP8010978A
Other languages
Japanese (ja)
Other versions
JP3432347B2 (en
Inventor
Tadayoshi Ishibashi
石橋忠良
Yorio Yonekura
米倉頼夫
Toru Kawasaki
徹 川崎
Fumihide Mifuji
美藤文秀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
East Japan Railway Co
Original Assignee
East Japan Railway Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by East Japan Railway Co filed Critical East Japan Railway Co
Priority to JP01097896A priority Critical patent/JP3432347B2/en
Publication of JPH09203011A publication Critical patent/JPH09203011A/en
Application granted granted Critical
Publication of JP3432347B2 publication Critical patent/JP3432347B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To dispense with temporary installation and removal of construction girders, and slow traveling of trains and reduce the construction period and cost, by driving foundation piles and erecting bridge piers at the outside of a rail way and laying construction girders made of hollow steel pipes as main bridge girders and thereafter, reinforcing the hollow steel pipes. SOLUTION: Foundation piles 7 are driven only at the outside of a railway. Receive girders 20 are laid under the railroad track above the foundation piles 7 so as to cross the rail way. Parapet girders 21 are arranged at the outside of the receive girders 20. Hollow precast members are reinforced by prestressed concrete (PC) steel materials to form the receive girders 20. The bridge piers 23 are constructed between the receive girders 20 and the parapet girders 21, and the foundation piles 7. Subsequently, exsisting bridge girders are removed and exchanged to hollow steel pipe girders 24 to put them between the receive girders. The girders 24 serve as construction girders temporarily. Temporary support points 3a are provided on existing abutments 3 and used as temporary bridge piers together with the receive girders 20. The girders 24 are reinforced with PC and used for the main bridge girders. Thereafter, the existing abutments are removed to widen the road width.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は短径間架道橋又は跨線橋
を長径間架道橋又は跨線橋に改築する工法に係り、特に
中空鋼桁をプレストレストコンクリート(PC)または
鉄筋コンクリート(RC)で補強し、本橋桁に使用する
工法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method for reconstructing a short span overpass or overpass to a long span overpass or overpass, and particularly reinforced a hollow steel girder with prestressed concrete (PC) or reinforced concrete (RC). However, it relates to the construction method used for the main bridge girder.

【0002】[0002]

【従来の技術】従来、鉄道線路盛土構造部における道路
上部の鉄道橋には軽量で施工の容易な鉄桁等が多く用い
られている。この鉄桁は構造上騒音が大きく、しかも短
径間であるため道路幅が狭く、交通渋滞の原因の一つと
なっている。このため、鉄道と道路交通を通しながら長
径間桁に架け換えて道路幅を広げることが行われてい
る。この従来の工法の施工手順について図1〜図5によ
り説明する。図1は架道橋の両側に仮土留杭を施工する
手順を説明する図であり、図1(a)(断面図)におい
て、架道橋は道路6中央部を旧橋脚4により、道路6両
側を旧橋台3により、それぞれ支えられた旧橋桁2から
なっており、この橋桁を通してレール(RL)1が敷設
されている。図1(b)(平面図)に示すように、新た
な橋台を施工するために、まず、列車の通らない夜間に
架道橋の両側の線路内に所定間隔で仮土留杭5を打ち込
む。
2. Description of the Related Art Conventionally, many iron girders which are lightweight and easy to construct are used for a railway bridge above a road in an embankment structure portion of a railway line. This iron girder is structurally noisy and has a narrow road, so the road width is narrow, which is one of the causes of traffic congestion. For this reason, the road width is widened by switching to a long span girder while passing the railway and road traffic. The construction procedure of this conventional construction method will be described with reference to FIGS. FIG. 1 is a diagram for explaining the procedure for constructing temporary earth retaining piles on both sides of the bridge. In FIG. 1 (a) (cross-sectional view), the bridge is a road 6 at the center of the road 6 and a road 6 It consists of an old bridge girder 2 supported on both sides by an old abutment 3, and a rail (RL) 1 is laid through this bridge girder. As shown in FIG. 1 (b) (plan view), in order to construct a new abutment, first, temporary earth retaining piles 5 are driven into the tracks on both sides of the aerial bridge at predetermined intervals at night when the train does not pass.

【0003】次に、図2に示すように、線路1がずれな
いように仮土留した区域の線路に仮橋台を設けて工事桁
9を設置し、この状態で杭5で仮土留した区域内を切梁
10等の支保工を施行しながら掘削して基礎杭7を施行
して鉄筋コンクリート製の新橋台8を構築する。次に、
図3に示すように、旧橋脚4の両側にサンドル11を施
工し、サンドル11と旧橋桁2の間に楔のような仮受を
入れて一旦サンドル11で旧橋桁2を受け、この状態で
旧橋脚4の頂部を壊し、次いで旧橋脚4と旧橋桁2の間
に仮受材12を入れてサンドル11と旧橋桁2の間の仮
受を外す。図3はこの状態を示している。
Next, as shown in FIG. 2, a temporary bridge abutment is provided on the track of the area where the temporary earth is retained so that the track 1 is not displaced, and a construction girder 9 is installed in this area. While excavating while supporting the beams 10 and so on, foundation piles 7 are carried out to construct a new abutment 8 made of reinforced concrete. next,
As shown in FIG. 3, the sandals 11 are installed on both sides of the old bridge pier 4, and a temporary support like a wedge is inserted between the sandals 11 and the old bridge girders 2 to temporarily receive the old bridge girders 2 with the sandals 11, and in this state The top of the old bridge pier 4 is destroyed, and then the temporary support material 12 is inserted between the old pier 4 and the old bridge girder 2 to remove the temporary support between the sandle 11 and the old bridge girder 2. FIG. 3 shows this state.

【0004】次に、図4に示すように、サンドル11を
旧橋台3の位置まで移動して同様に仮受で旧橋桁2を受
け、旧橋台3の頂部を壊してサンドル材13を設けると
ともに、工事桁9と旧橋桁2の間に工事桁15を施工し
て線路の補強を図った後、仮土留杭5と旧橋台3の間に
サンドル材14を施工する。なお、図3、図4の施工手
順において、旧橋脚4、旧橋台3の頂部を壊しているの
は、桁高が高い本橋桁に合わせるためである。
Next, as shown in FIG. 4, the sandle 11 is moved to the position of the old abutment 3 and the old bridge girder 2 is similarly received by the temporary reception, and the top portion of the old abutment 3 is broken to provide the sandle material 13. After constructing the construction girder 15 between the construction girder 9 and the old bridge girder 2 to reinforce the track, the sandle material 14 is installed between the temporary earth retaining pile 5 and the old abutment 3. In addition, in the construction procedure of FIGS. 3 and 4, the tops of the old pier 4 and the old abutment 3 are broken in order to match the main girder with a high girder height.

【0005】次に、図5に示すように、工事桁9、1
5、旧橋桁2を取り外し、新橋桁16を敷設する。この
とき、新橋台の背面は埋め戻されているため工事桁9を
外しても問題はない。この状態で旧橋脚4、旧橋台3、
新橋台の内側(道路側)の仮土留杭等は全て取り除か
れ、道路幅が広げられる。なお、新橋台の外側の仮土留
杭は取り除くか、そのままにしておくことになる。
Next, as shown in FIG. 5, construction girders 9 and 1
5. Remove old bridge girder 2 and lay new bridge girder 16. At this time, since the back surface of the new abutment is backfilled, there is no problem even if the construction girder 9 is removed. In this state, the old pier 4, old abutment 3,
All temporary retaining piles inside the new abutment (road side) will be removed and the road width will be expanded. In addition, the temporary earth retaining piles on the outside of the new abutment will be removed or left as it is.

【0006】[0006]

【発明が解決しようとする課題】このように従来では、
鉄道線路を工事桁で防護しながら新橋台を設置し、工事
桁を一旦敷設した後、新橋桁に交換する工法が一般的で
あり、 新橋台の上を工事桁に交換し、仮受けしなければなら
ない。 工事桁を受けるための仮橋台を施工しなければならな
い。また、線路内作業であるため、 長期間列車が徐行しなければならない。 夜間工事を余儀なくされるため施工期間が長くかか
る。その結果、 施工費が多くかかる。等の問題があった。本発明は上
記課題を解決するためのもので、短径間架道橋又は跨線
橋を長径間化する改築工法において、工事桁の仮設・撤
去を必要とせず、列車が徐行を必要とせず、施工期間を
短縮し、施工費を安くすることを目的とする。
As described above, conventionally,
It is common to install a new abutment while protecting the railroad track with a construction girder, lay the construction girder once, and then replace it with a new girder. I have to. A temporary abutment must be constructed to receive the work girder. In addition, since the work is on track, the train must slow down for a long time. The construction period is long because it requires night construction. As a result, construction costs are high. And so on. The present invention is for solving the above problems, in a reconstructing method for making a short span overpass or an overpass a long span, without the need for temporary installation or removal of the work girder, the train does not need slowing, construction The purpose is to shorten the period and reduce the construction cost.

【0007】[0007]

【課題を解決するための手段】本発明の短径間架道橋又
は跨線橋の長径間化改築工法は、線路外に基礎杭を施工
し、次いで路盤内に受桁を挿入施行した後、基礎杭と受
桁の間に受桁の橋脚を施行する。受桁はプレストレスト
コンクリートで補強した構造のものであり、これにより
線路内に中間支持杭を設けることを不要とする。この受
桁と旧橋台を仮橋脚として使用し、受桁間に中空鋼桁を
連続桁として使用して一時的に工事桁の役割を担わせ、
その後中空鋼桁をPCまたはRCで補強した後、旧橋
脚、旧橋台を撤去する。
[Means for Solving the Problems] The method of reconstructing a long span span of a short span overpass or overpass of the present invention is to construct a foundation pile outside the track, then insert a girder into the roadbed, and then construct the foundation. A bridge girder will be installed between the pile and the girder. The girder has a structure reinforced with prestressed concrete, which eliminates the need for intermediate support piles in the track. This girder and old abutment are used as temporary bridge piers, and hollow steel girders are used as continuous girders between girders to temporarily serve as construction girders.
After that, after reinforcing the hollow steel girder with PC or RC, the old pier and old abutment are removed.

【0008】[0008]

【発明の実施の形態】以下、図6〜図14により本発明
の長径間化改築工法の施工手順について説明する。図6
は基礎杭を施行する段階を示す図であり、本発明では基
礎杭7は線路外にのみ施行する。線路外に施行すること
により、列車走行中でも工事することができ、昼間での
工事が可能である。なお、図6においては橋桁中央部に
橋脚が示されていないが、本発明は橋桁中央部に橋脚が
ある場合も、図のようにない場合にも適用可能である。
BEST MODE FOR CARRYING OUT THE INVENTION The construction procedure of the long span construction method of the present invention will be described below with reference to FIGS. FIG.
[Fig. 6] is a view showing a stage in which a foundation pile is applied. In the present invention, the foundation pile 7 is applied only outside the track. By enforcing it outside the track, construction can be done even while the train is running, and construction in the daytime is possible. Although the bridge pier is not shown in the center of the bridge girder in FIG. 6, the present invention is applicable to the case where the bridge pier is located in the center of the bridge girder and the case where the bridge pier is not provided.

【0009】次いで、図7に示すように、受桁20を基
礎杭7の上方の軌道下に線路を横断して施工する。この
施工はオーガーで土を取り除きながら土中に押し込んで
いくことにより行い、さらに、図8に示すように、受桁
20の外側に並べて、同様にパラペット桁21を施工す
る。
Next, as shown in FIG. 7, the receiving girder 20 is installed under the track above the foundation pile 7 across the line. This construction is carried out by pushing the soil into the soil while removing the soil with an auger, and as shown in FIG. 8, the parapet girders 21 are similarly arranged on the outside of the receiving girder 20.

【0010】受桁20は、図9(a),(b)に示すよ
うに、PC鋼材(線)22を配置した二重中空鋼管とし
て施工し、次いで鋼管同士の間にコンクリートを打設
し、コンクリートの硬化後、PC鋼材に緊張力を導入し
て補強した構造とする。この構造によりコンクリートの
耐力が飛躍的に増大し、長尺化しても中間の支持杭を不
要とすることができる。なお、受桁のスパンが短い場合
には、中空鋼管を施工後、鋼管内全体にコンクリートを
打設してPC鋼材で補強するようにしてもよい。また、
受桁20としては、図9(c),(d)に示すように、
中空のプレキャスト部材をPC鋼材22で補強した構
造、或いは図9(e),(f)に示すように、中空のプ
レキャストブロックを、オーガーで土を取り除きながら
土中に押し込み、順次ブロックを接続し、PC鋼材22
で補強した構造としてもよい。もちろん、パラペット桁
21も同様に、受桁と同様に補強した構造としてもよ
く、また、受桁とパラペット桁とは別体ではなく一体的
に形成してもよい。
As shown in FIGS. 9 (a) and 9 (b), the receiving girder 20 is constructed as a double hollow steel pipe in which a PC steel material (wire) 22 is arranged, and then concrete is placed between the steel pipes. After the concrete is hardened, tension is introduced into PC steel to reinforce it. With this structure, the yield strength of concrete is dramatically increased, and it is possible to eliminate the need for intermediate support piles even if the length is increased. When the span of the receiving girder is short, after constructing the hollow steel pipe, concrete may be poured into the entire steel pipe to be reinforced with the PC steel material. Also,
As the receiving girder 20, as shown in FIGS. 9 (c) and 9 (d),
A structure in which a hollow precast member is reinforced with a PC steel material 22, or as shown in FIGS. 9 (e) and (f), a hollow precast block is pushed into the soil while removing the soil with an auger, and the blocks are sequentially connected. , PC steel 22
The structure may be reinforced by. Of course, the parapet girder 21 may also be reinforced similarly to the girder, and the girder and parapet girder may be integrally formed instead of being separate bodies.

【0011】次いで、図10に示すように、受桁20、
パラペット桁21と基礎杭7の間に橋脚23を施行して
受桁20、パラペット桁21を受けるようにする。
Next, as shown in FIG.
A bridge pier 23 is installed between the parapet girder 21 and the foundation pile 7 so that the girder 20 and the parapet girder 21 can be received.

【0012】こうして、図11の平面図に示すように、
基礎杭及び橋脚を線路外に設置し、橋脚間に受桁、パラ
ペット桁が渡された形となり、受桁、パラペット桁には
中間支持杭がなく、線路内での工事を一切なくして改築
することができる。
Thus, as shown in the plan view of FIG.
The foundation piles and bridge piers will be installed outside the track, and the girders and parapet girders will be passed between the piers, and there will be no intermediate support piles on the girders and parapet girders, and the construction will be completed without any work inside the track. be able to.

【0013】次いで、図12に示すように旧橋桁2を撤
去し、中空鋼管からなる架設桁24に交換して受桁20
間に施行する。架設桁24は一時的に工事桁の役割を担
わせるもので、軽量であるため施行が容易であり、旧橋
台3に仮支点3aを設け、受桁20とともに仮橋脚とし
て使用することができるので新たに仮橋台を施行する必
要はない。
Next, as shown in FIG. 12, the old bridge girder 2 is removed and replaced with an erection girder 24 made of a hollow steel pipe to receive the girder 20.
Enforce in between. Since the erection girder 24 temporarily plays a role of a construction girder, it is easy to implement because it is lightweight, and it can be used as a temporary pier with the support girder 20 by providing a temporary fulcrum 3a on the old abutment 3. There is no need to implement a new temporary abutment.

【0014】図13に示すように、架設桁(工事桁)2
4にはPCケーブル25が配設されており、鋼管内にコ
ンクリートを打設し、硬化後、PCケーブルに緊張力を
与えて補強し、これを本橋桁として使用する。PCケー
ブルは工事桁端部にパラペット桁があるため、図14に
示すように工事桁の下側で緊張力を付与する必要があ
り、そのためPCケーブルの一端をそれぞれ鋼管端部に
固定し、鋼管下側の反対側端部からそれぞれ緊張力を付
与する方式(図14(a))、図14(a)と同じ方式
で、緊張力を付与する端部を、鋼管に設けた切り欠き内
に設けるようにする方式(図14(b))、PCケーブ
ルの両端を鋼管下側から取り出す方式で、端部を鋼管外
側とする方式(図14(c))、端部を鋼管に設けた切
り欠き内に設けるようにする方式(図14(d))を用
いるようにする。なお、本橋桁はプレストレストコンク
リートにより補強した構造だけでなく、鉄筋コンクリー
トにより補強した構造であってもよい。次いで、旧橋台
を撤去して道路幅が広げられ、本発明による工事が完了
する。なお、上記説明では架道橋への適用について説明
したが、本発明はこれに限定されるものではなく、跨線
橋の長径間化にも全く同様に適用可能である。
As shown in FIG. 13, an erection girder (construction girder) 2
4 is provided with a PC cable 25. Concrete is cast in a steel pipe, and after hardening, a tension is applied to the PC cable to reinforce it, which is used as a main bridge girder. Since the PC cable has a parapet girder at the end of the work girder, it is necessary to apply tension on the lower side of the work girder as shown in FIG. The method of applying tension from the opposite end on the lower side (Fig. 14 (a)), the same method as in Fig. 14 (a), the end of applying tension is placed in the notch provided in the steel pipe. A method of providing the cable (Fig. 14 (b)), a method of taking out both ends of the PC cable from the lower side of the steel pipe, a method of making the ends outside the steel pipe (Fig. 14 (c)), a cutting provided at the ends of the steel pipe. The method (FIG. 14 (d)) to be provided in the notch is used. The bridge girder may have not only a structure reinforced with prestressed concrete but also a structure reinforced with reinforced concrete. Then, the old abutment is removed to widen the road width, and the construction according to the present invention is completed. In the above description, the application to the overpass has been described, but the present invention is not limited to this, and can be applied to the long span of the overpass in exactly the same manner.

【0015】[0015]

【発明の効果】以上のように本発明によれば、線路外に
基礎杭、橋脚を施行し、受桁はPCで補強した構造と
し、また本橋桁は中空鋼管からなる工事桁を旧橋台を仮
橋脚として施行した後、PCまたはRCで補強したもの
であるので、以下のような効果が得られる。
As described above, according to the present invention, foundation piles and bridge piers are implemented outside the track, and the receiving girder has a structure reinforced with PC. Further, this girder has a construction girder made of hollow steel pipe and an old abutment. Since it is reinforced with PC or RC after being applied as a temporary bridge pier, the following effects can be obtained.

【0016】旧橋桁を工事桁に交換し、PCまたはR
Cで補強してそのまま本橋桁に使用するので桁架設が一
回でよい。 旧橋台を仮橋脚として使用するので新たに仮橋台を施
行する必要がない。 基礎杭、橋脚は線路外に施工され、線路内での工事が
ないので鉄道および道路を通しながら施行できる。 本発明の橋桁は桁架設時には軽量であるため、架設が
容易である。 橋桁架設後にコンクリートを打設するので、列車走行
に伴う騒音を小さくすることができる。 施行費が安い。 線路内での工事がなく、昼間作業が可能となるため工
期が短縮できる。
Replace the old bridge girder with a construction girder and use PC or R
Since it is reinforced with C and used as it is for this bridge girder, the girder erection is only required once. Since the old abutment is used as a temporary pier, it is not necessary to construct a new temporary abutment. Since foundation piles and piers are constructed outside the tracks and there is no construction inside the tracks, it can be carried out while passing through the railway and roads. Since the bridge girder of the present invention is lightweight at the time of erection of the girder, the erection is easy. Since concrete is placed after erection of bridge girders, noise accompanying train running can be reduced. The enforcement cost is low. Since there is no construction on the track and daytime work is possible, the construction period can be shortened.

【図面の簡単な説明】[Brief description of drawings]

【図1】 架道橋の両側に仮土留杭を施工する手順を説
明する図である。
FIG. 1 is a diagram illustrating a procedure for constructing temporary retaining piles on both sides of a viaduct.

【図2】 工事桁、新橋台を施工する手順を説明する図
である。
FIG. 2 is a diagram illustrating a procedure for constructing a construction girder and a new abutment.

【図3】 サンドルによる仮受を説明する図である。FIG. 3 is a diagram illustrating temporary receipt by a sander.

【図4】 工事桁を施工する手順を説明する図である。FIG. 4 is a diagram illustrating a procedure for constructing a work girder.

【図5】 既設桁を本橋桁に交換する手順を説明する図
である。
FIG. 5 is a diagram illustrating a procedure for replacing an existing girder with a main girder.

【図6】 本発明における基礎杭施工手順の説明図であ
る。
FIG. 6 is an explanatory view of a foundation pile construction procedure in the present invention.

【図7】 受桁の施工手順を説明する図である。FIG. 7 is a diagram illustrating a procedure for constructing a receiving girder.

【図8】 パラペット桁の施工手順を説明する図であ
る。
FIG. 8 is a diagram illustrating a procedure for constructing a parapet girder.

【図9】 PCケーブルによる補強を説明する図であ
る。
FIG. 9 is a diagram illustrating reinforcement by a PC cable.

【図10】 橋脚柱の施工を説明する図である。FIG. 10 is a diagram illustrating the construction of a bridge pier.

【図11】 本発明の施工手順を説明する平面図であ
る。
FIG. 11 is a plan view illustrating a construction procedure of the present invention.

【図12】 工事桁の施工を説明する図である。FIG. 12 is a diagram illustrating the construction of a construction girder.

【図13】 工事桁を本橋桁とする説明図である。FIG. 13 is an explanatory diagram in which the construction girder is the main bridge girder.

【図14】 工事桁を本橋桁とするためのPC鋼線の配
置図例である。
FIG. 14 is an example of a layout plan of a PC steel wire for making a construction girder a main bridge girder.

【符号の説明】[Explanation of symbols]

1…RL、2…旧橋桁、3…旧橋台、3a…仮支点、4
…旧橋脚、5…仮土留杭、6…道路、7…基礎杭、8…
新橋台、9…工事桁、10…切梁、11…サンドル、1
2…仮受材、13…サンドル材、20…受桁、21…パ
ラペット桁、22…PC鋼材、23…橋脚、24…架設
桁(工事桁)、25…PCケーブル。
1 ... RL, 2 ... Old bridge girder, 3 ... Old abutment, 3a ... Temporary fulcrum, 4
… Old piers, 5… Temporary retaining piles, 6… Roads, 7… Foundation piles, 8…
New abutment, 9 ... Construction girder, 10 ... Girder, 11 ... Sandle, 1
2 ... Temporary receiving material, 13 ... Sandle material, 20 ... Receiving girder, 21 ... Parapet girder, 22 ... PC steel material, 23 ... Bridge pier, 24 ... Erection girder (construction girder), 25 ... PC cable.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 美藤文秀 東京都千代田区丸の内一丁目6番5号東日 本旅客鉄道株式会社内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Fumihide Mito 1-6-5 Marunouchi, Chiyoda-ku, Tokyo Tohnichi Railway Co., Ltd.

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 線路外に基礎杭及び橋脚を施工するとと
もに、橋脚間に受桁を渡し、既設の橋桁と交換して前記
受桁間に本橋桁を施工する短径間架道橋又は跨線橋を長
径間化する改築方法であって、前記本橋桁は、中空鋼管
からなる工事桁を施工した後、前記中空鋼管をプレスト
レストコンクリート又は鉄筋コンクリートで補強したこ
とを特徴とする短径間架道橋又は跨線橋の長径間化改築
工法。
1. A short span overpass or overpass bridge in which foundation piles and bridge piers are constructed outside the track, bridge girders are passed between the bridge piers, and existing bridge girders are replaced with main bridge girders between the bridge girders. Is a reconstructing method for increasing the span, the main bridge girder is a short span overpass bridge, characterized in that after the construction girder made of hollow steel pipe is constructed, the hollow steel pipe is reinforced with prestressed concrete or reinforced concrete. Reconstruction method for spanning overpasses.
【請求項2】 請求項1記載の方法において、前記受桁
は、中空鋼管をプレストレストコンクリートで補強した
構造であることを特徴とする短径間架道橋又は跨線橋の
長径間化改築工法。
2. The method according to claim 1, wherein the receiving girder has a structure in which a hollow steel pipe is reinforced with prestressed concrete, and a method for reconstructing a long span of a short span overpass or overpass.
【請求項3】 請求項1記載の方法において、前記受桁
は、中空のプレキャスト部材をPC鋼材で補強した構造
であることを特徴とする短径間架道橋又は跨線橋の長径
間化改築工法。
3. The method of claim 1, wherein the receiving girder has a structure in which a hollow precast member is reinforced by a PC steel material, and a method for reconstructing a long span of a short span overpass or an overpass bridge. .
【請求項4】 請求項1記載の方法において、前記受桁
は、中空のプレキャストブロックを複数結合し、PC鋼
材で補強した構造であることを特徴とする短径間架道橋
又は跨線橋の長径間化改築工法。
4. The method according to claim 1, wherein the receiving girder has a structure in which a plurality of hollow precast blocks are joined together and reinforced with a PC steel material, and a long diameter of a short span overpass or an overpass bridge. Interchange and reconstruction method.
【請求項5】 請求項1記載の方法において、受桁の外
側にパラペット桁を並設したことを特徴とする短径間架
道橋又は跨線橋の長径間化改築工法。
5. The method of claim 1, wherein parapet girders are arranged side by side on the outside of the receiving girder, for constructing a short span overpass or overpass with a long span.
JP01097896A 1996-01-25 1996-01-25 Short span overpass or overpass, long span renovation method Expired - Fee Related JP3432347B2 (en)

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Application Number Priority Date Filing Date Title
JP01097896A JP3432347B2 (en) 1996-01-25 1996-01-25 Short span overpass or overpass, long span renovation method

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Application Number Priority Date Filing Date Title
JP01097896A JP3432347B2 (en) 1996-01-25 1996-01-25 Short span overpass or overpass, long span renovation method

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JPH09203011A true JPH09203011A (en) 1997-08-05
JP3432347B2 JP3432347B2 (en) 2003-08-04

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Country Link
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JP2002194704A (en) * 2000-12-26 2002-07-10 Taisei Corp Method for constructing girder
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JP2002194704A (en) * 2000-12-26 2002-07-10 Taisei Corp Method for constructing girder
CN103696370A (en) * 2013-12-18 2014-04-02 苏州大方特种车股份有限公司 Quick bridge construction method and structure
CN103696370B (en) * 2013-12-18 2015-09-02 苏州大方特种车股份有限公司 A kind of Quick bridge construction method and structure
CN105178194A (en) * 2015-09-10 2015-12-23 重庆市轨道交通设计研究院有限责任公司 Continuous beam type rail construction method
CN110184952A (en) * 2019-06-26 2019-08-30 中铁八局集团第二工程有限公司 A kind of reconstruction structure and its construction method of existing abutment
CN110184952B (en) * 2019-06-26 2024-01-16 中铁八局集团第二工程有限公司 Modification structure of existing bridge abutment and construction method thereof
CN110761188B (en) * 2019-09-26 2021-01-26 中国二十冶集团有限公司 Overpass construction method at intersection of main road and local road
CN110761188A (en) * 2019-09-26 2020-02-07 中国二十冶集团有限公司 Overpass construction method at intersection of main road and local road
CN113389218A (en) * 2021-05-10 2021-09-14 中铁武汉勘察设计院有限公司 Retaining wall structure for entrance and exit of road bridge and construction method thereof
CN113897878A (en) * 2021-11-18 2022-01-07 中铁六局集团天津铁路建设有限公司 Construction method for erecting T-shaped beam crossing railway
CN114108642A (en) * 2021-12-08 2022-03-01 北京市市政四建设工程有限责任公司 Ramp bridge and underground complex structure parallel construction method
CN114703757A (en) * 2022-04-13 2022-07-05 中交路桥建设有限公司 Multifunctional support for steel cross beam of cable-stayed bridge and assembling method of steel cross beam
CN114892552A (en) * 2022-07-01 2022-08-12 安徽省公路桥梁工程有限公司 Box girder type bridge reconstruction construction method
CN114892552B (en) * 2022-07-01 2023-11-21 安徽省公路桥梁工程有限公司 Box girder type bridge reconstruction construction method

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