JPH10237823A - Method for replacing overhead bridge - Google Patents
Method for replacing overhead bridgeInfo
- Publication number
- JPH10237823A JPH10237823A JP4324697A JP4324697A JPH10237823A JP H10237823 A JPH10237823 A JP H10237823A JP 4324697 A JP4324697 A JP 4324697A JP 4324697 A JP4324697 A JP 4324697A JP H10237823 A JPH10237823 A JP H10237823A
- Authority
- JP
- Japan
- Prior art keywords
- bridge girder
- viaduct
- replacement
- new
- girder
- 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
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、市街地区域に架橋
されている高速道路橋等の高架橋の架替工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for replacing a viaduct such as a highway bridge bridged in an urban area.
【０００２】[0002]
【従来の技術】市街地区域に架橋されている高速道路橋
は高架橋が多く、この高架橋は、経年変化、交通量の増
加、重量物積載車両の増加、交通渋滞等により高架橋の
疲労が激しく、架替の必要性が生じている。2. Description of the Related Art There are many viaducts in highway bridges that are bridged in urban areas, and the viaducts are subject to severe fatigue due to aging, increase in traffic volume, increase in vehicles loaded with heavy loads, traffic congestion, etc. There is a need for replacement.
【０００３】前述の高速道路橋等の高架橋は、例えば、
スパン３０ｍの橋脚上に四車線の幅の橋桁で架設された
ケースが多く、橋桁は、例えば、重量４００トンを越え
るものであり、架替工事はこのような橋桁を撤去し、そ
の後、新規橋桁を架設する工事である。[0003] Viaducts such as the aforementioned highway bridges are, for example,
In many cases, a bridge girder with a width of four lanes is erected on a pier with a span of 30 m, and the bridge girder has a weight exceeding, for example, 400 tons. It is construction work to construct.
【０００４】我が国では、高速道路の歴史が浅く、特に
大都市部での高速道路の高架橋を新規に架替た実績は皆
無に等しい。[0004] In Japan, the history of expressways is short, and there is almost no record of renewing highway viaducts especially in metropolitan areas.
【０００５】前記の架替工事を想定すれば、高架橋下に
並設する道路にトラッククレーンを配置して、架替橋桁
を前記のトラッククレーンで吊り上げ可能な重量、即
ち、橋桁の骨組である主桁単位で撤去し、新規橋桁も主
桁単位で前記トラッククレーンで吊り上げ、架設する方
法が考えられる。[0005] Assuming the rebuilding work described above, a truck crane is arranged on a road that is juxtaposed beneath the viaduct, and the rebuildable bridge girder can be lifted by the truck crane. A method is considered in which the bridge girder is removed in units of girders, and a new bridge girder is lifted and erected by the truck crane in units of main girder.
【０００６】また、大重量の橋桁を一挙に撤去、架設す
る方法として、特開平５−１４０９１４号公報に示す自
走式トランスポータを用いる方法も考えられる。As a method of removing and erection of a heavy bridge girder at once, a method using a self-propelled transporter disclosed in Japanese Patent Application Laid-Open No. 5-140914 can be considered.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、前述の
トラッククレーンを用いる方法では、吊り上げ可能な部
材が軽量な主桁単位であるので、橋桁の撤去、架設が長
期化し、交通渋滞の長期化をまねく恐れがある。However, in the above-described method using a truck crane, since the members that can be lifted are the light main girder units, the removal and construction of the bridge girder becomes longer, leading to a longer traffic jam. There is fear.
【０００８】また、前記特開平５−１４０９１４号公報
に示す自走式トランスポータを用いる方法では、自走式
トランスポータの車高が１．５ｍで油圧サスペンション
が±３００ｍｍしかないので、地上からの高さが８〜１
１ｍもある高架橋の橋桁の降下、揚重には使用不能であ
る。さらに、前記自走式トランスポータに新規橋桁を載
置できたとしても、道路面状態を考えると市街地を走行
して現場に到達するまでに、転倒の危険性が大である。
また、現地で新規橋桁を組立てた場合も、前記自走式ト
ランスポータに載置する手段が問題となる。In the method using the self-propelled transporter disclosed in Japanese Patent Application Laid-Open No. 5-140914, the height of the self-propelled transporter is 1.5 m and the hydraulic suspension is only ± 300 mm. Height 8-1
It cannot be used for descending or lifting a 1-meter viaduct bridge girder. Furthermore, even if a new bridge girder can be placed on the self-propelled transporter, there is a great risk of falling before traveling to the city and arriving at the site in consideration of road surface conditions.
Also, when a new bridge girder is assembled on site, there is a problem with the means for mounting on the self-propelled transporter.
【０００９】本発明は、橋桁の撤去、架設からなる架替
工事を、特殊な装置を用いることなく、安価なコスト
で、かつ、迅速化を図ることにより架替期間の短縮化を
図ることを目的としたものである。[0009] The present invention aims at shortening the replacement period by removing the bridge girder and installing the bridge at low cost and speed without using special equipment. It is intended.
【００１０】[0010]
【課題を解決するための手段】前述の課題を解決する第
一の手段は、支保工ブロックを下方から上方へ順次継ぎ
足して架替橋桁を支持させた後、前記架替橋桁を高架橋
体から切り離し、下部の支保工ブロックから順次撤去す
ることにより前記架替橋桁を降下させ、その後、前記架
替橋桁を解体、撤去した後、支保工ブロック上部に新規
橋桁を載置し、支保工ブロックを下方から上方へ順次継
ぎ足して新規橋桁を揚重し架設することを特徴とする高
架橋の架替工法である。A first means for solving the above-mentioned problem is to sequentially add a shoring block from bottom to top to support the bridge girder, and then separate the bridge girder from the viaduct. Then, the bridge girder is lowered by sequentially removing it from the lower shoring block, and after dismantling and removing the replacement bridge girder, a new bridge girder is placed on the top of the shoring block, and the shoring block is lowered. This is a method of rebuilding a viaduct, characterized in that new bridge girders are lifted up sequentially from above and lifted and erected.
【００１１】前述の課題を解決する第二の手段は、架替
橋桁を支保工ブロックの順次撤去により降下させ、解体
中に、桁幅方向の隣接する区画で新規橋桁の支保工ブロ
ックへの載置を行い、前記架替橋桁の解体撤去後に、前
記新規橋桁を支保工ブロックに載置した状態で前記架替
橋桁の解体撤去後の位置に移動し、その後、新規橋桁を
支保工ブロックの順次継ぎ足しにより揚重し架設するこ
とを特徴とする高架橋の架替工法である。The second means for solving the above-mentioned problem is to lower the replacement bridge girder by sequentially removing the shoring block, and to mount a new bridge girder on the shoring block in an adjacent section in the girder width direction during dismantling. After the dismantling and removal of the replacement bridge girder, the new bridge girder is moved to the position after dismantling removal of the replacement bridge girder with the new bridge girder being placed on the support block, and then the new bridge girder is sequentially replaced with the support block. This is a viaduct replacement method characterized by lifting and erection by extension.
【００１２】前述の課題を解決する第三の手段は、最上
段の支保工ブロックと新規橋桁との間に高さ調整用のジ
ャッキを配置し、新規橋桁が架設位置に達した後前記ジ
ャッキにより新規橋桁のレベル調整を行いながら架設す
ることを特徴とする前記第一または第二の手段に記載の
高架橋の架替工法である。A third means for solving the above-mentioned problem is to arrange a jack for height adjustment between the uppermost support block and the new bridge girder, and after the new bridge girder reaches the erection position, use the jack. The viaduct replacement method according to the first or second means, wherein the bridge is installed while adjusting the level of the new bridge girder.
【００１３】前述の課題を解決する第四の手段は、高架
橋の架替が橋桁幅の略１／２づつ行われることを特徴と
する前記第一、第二、または第三の手段に記載の高架橋
の架替工法である。A fourth means for solving the above-mentioned problem is that the viaduct is replaced by approximately 1/2 of the bridge girder width in the first, second or third means. This is a method of replacing the viaduct.
【００１４】前述の手段によれば、架替橋桁は、支保工
ブロックの順次下方から上方への積み上げにより、安定
した状態で支保工ブロックに支持され、その後、支保工
ブロックの順次撤去により、安定した状態で解体位置ま
で下降させることができる。According to the above-mentioned means, the replacement bridge girder is supported by the support blocks in a stable state by successively stacking the support blocks from below to above, and then is gradually removed by sequentially removing the support blocks. In this state, it can be lowered to the dismantling position.
【００１５】また、新規橋桁の架設は、前記とは逆に、
新規橋桁を載置した状態で支保工ブロックの積み上げで
高架橋の高さまで揚重される。The construction of a new bridge girder is the reverse of the above.
The new bridge girder is lifted to the height of the viaduct by stacking the support blocks with the new bridge girder placed.
【００１６】以上の作業は、高架橋の真下で行われるの
で、側部の地上道路を占有することによる交通渋滞がな
い。また、架替橋桁の解体中に隣接する区画（橋桁幅の
略１／２スペース）で新規橋桁の準備を行い、架替橋桁
の解体撤去後直ちに、新規橋桁の揚重が行えるので、作
業が迅速化される。Since the above operation is performed immediately below the viaduct, there is no traffic congestion due to occupying the side ground road. Also, a new bridge girder will be prepared in the adjacent section (approximately 1/2 space of the bridge girder) during the dismantling of the bridge girder, and immediately after the dismantling of the bridge girder, the new bridge girder can be lifted. Be faster.
【００１７】また、新規橋桁のレベル調整は、支保工ブ
ロックと新規橋桁との間に配置されたジャッキにより行
えるので、レベル調整作業が迅速にできる。Further, since the level adjustment of the new bridge girder can be performed by the jack disposed between the support block and the new bridge girder, the level adjustment work can be performed quickly.
【００１８】橋桁ブロックが橋桁幅の１／２単位の大型
で架替されるので、作業が迅速であり、高架橋道路であ
る高速道路等の渋滞期間が短縮化される。Since the bridge girder block is replaced with a large one-half unit of the bridge girder width, the work is quick, and the period of congestion on a highway such as a viaduct road is shortened.
【００１９】[0019]
【発明の実施の形態】以下、本発明の高架橋の架替工法
について、図面を参照しながら説明する。BEST MODE FOR CARRYING OUT THE INVENTION The viaduct replacement method of the present invention will be described below with reference to the drawings.
【００２０】図１は、本発明の高架橋の架替工法の工程
を示す側面図である。尚、以下側面図は、架替部分の橋
桁のみを図示してある。FIG. 1 is a side view showing the steps of the viaduct replacement method of the present invention. The side view below shows only the bridge girder of the replacement part.
【００２１】図１において、１は地上道路面であり、
２、３、４、５は橋脚Ｐ1,Ｐ2,Ｐ3,Ｐ 4,に架設された橋
桁である。６は支保工ブロック台、７は支保工昇降装置
（詳細は後述する）、８は支保工ブロックである。In FIG. 1, 1 is a ground road surface,
2, 3, 4, 5 are piers P1,P2,P3,P Four,Bridge built in
Digits. 6 is a shoring block, 7 is a shoring elevating device
(Details will be described later), and 8 is a shoring block.
【００２２】図２は図１の平面図で、本発明において
は、橋桁２、３、４、５を桁幅の各々１／２に分割し
て、架替を行う。即ち、２ａ，３ａ，４ａ，５ａ・・は
架替橋桁で、２ｂ，３ｂ，４ｂ，５ｂ・・は通行橋桁で
あり、該通行橋桁の二車線は上り、下りの対面通行車線
として活用し、架替橋桁２ａ，３ａ，４ａ，５ａ・・の
二車線の架替が終了したら、前記通行橋桁２ｂ，３ｂ，
４ｂ，５ｂ・・を架替するものである。FIG. 2 is a plan view of FIG. 1. In the present invention, the bridge girders 2, 3, 4, and 5 are each divided into half of the girder width, and are replaced. That is, 2a, 3a, 4a, 5a... Are bridge girder bridges, 2b, 3b, 4b, 5b... Are bridge girder bridges, and the two lanes of the bridge girder are used as up and down two-way lanes. When the replacement of the two-lane bridges 2a, 3a, 4a, 5a, etc. is completed, the bridge bridges 2b, 3b,
4b, 5b,...
【００２３】前記通行橋桁２ｂの下方である地上面に、
新規橋桁の組立ヤードＡを設け、該組立ヤードＡと前記
支保工昇降装置７との間に軌条９、９および１０、１０
を設けて、架替橋桁２ａの撤去中に、新規橋桁２ｃを組
立てる。On the ground surface below the bridge 2b,
An assembly yard A for a new bridge girder is provided, and rails 9, 9, 10 and 10 are provided between the assembly yard A and the support lifting device 7.
Is provided, and a new bridge girder 2c is assembled during removal of the replacement bridge girder 2a.
【００２４】図３は、本発明の高架橋の架替工法の次工
程を示す側面図である。図３において、支保工ブロック
８を継ぎ足すことにより、その上端が架替橋桁２ａの下
面に当接したら、通行橋桁２ｂを橋脚Ｐ1,Ｐ2 に残した
状態で架替橋桁２ａの両端および通行橋桁２ｂとの分離
帯の切断を行い、該架替橋桁２ａの荷重を支保工ブロッ
ク８に支持させる。尚、１１は架替橋桁２ａの両端の切
断線である。FIG. 3 is a side view showing the next step of the method for replacing a viaduct according to the present invention. In FIG. 3, when the upper end of the shoring block 8 abuts on the lower surface of the replacement bridge girder 2 a by adding the shoring block 8, both ends of the replacement bridge girder 2 a and the bridge girder 2 a are left with the passing bridge girder 2 b left on the piers P 1 and P 2. The separation strip is cut off from the bridge girder 2b, and the load of the bridge girder 2a is supported by the support block 8. In addition, 11 is a cutting line at both ends of the replacement bridge girder 2a.
【００２５】図４は、本発明の高架橋の架替工法の次工
程を示す側面図である。図４において、架替橋桁２ａの
荷重が支保工ブロック８に支持されたら、該支保工ブロ
ック８を下部の部分から１ケづつ撤去して、該架替橋桁
２ａを降下させる。FIG. 4 is a side view showing the next step of the method for replacing a viaduct according to the present invention. In FIG. 4, when the load of the replacement bridge girder 2a is supported by the support block 8, the support block 8 is removed one by one from the lower part, and the replacement bridge girder 2a is lowered.
【００２６】図５は、本発明の高架橋の架替工法の次工
程を示す平面図であり、降下した架替橋桁２ａは、その
場で解体、撤去され、橋軸方向に隣接する架替橋桁３ａ
の下方の地上面に架替橋桁３ａの架替用の支保工昇降装
置７が準備される。FIG. 5 is a plan view showing the next step of the viaduct rebuilding method according to the present invention. The lowered reconstructed bridge girder 2a is dismantled and removed on the spot, and the reconstructed bridge girder adjacent in the bridge axis direction. 3a
Is provided on the ground surface below the support bridge girder 3a for replacement of the bridge girder 3a.
【００２７】図６は、本発明の高架橋の架替工法の次工
程を示す側面図である。図６において、降下した架替橋
桁２ａが撤去されたら、通行橋桁２ｂ下で組立られた新
規橋桁２ｃが軌条９、１０を利用して架替橋桁２ａが存
在した位置に移動されて配置される。移動手段はウィン
チ、ジャッキが使用される。FIG. 6 is a side view showing the next step of the method for replacing a viaduct according to the present invention. In FIG. 6, when the lowered bridge girder 2a is removed, the new bridge girder 2c assembled under the passing bridge girder 2b is moved to the position where the replacement bridge girder 2a exists by using the rails 9, 10, and is arranged. . A winch or jack is used as the moving means.
【００２８】図７は、本発明の高架橋の架替工法の次工
程を示す側面図である。図７において、前記新規橋桁２
ｃが揚重のため支保工昇降装置７上に置かれ、該支保工
昇降装置７を使用して、前述と同様に支保工ブロック８
を継ぎ足しながら上方へ揚重される。また、橋軸方向に
隣接する架替橋桁３ａが前述と同様の支保工ブロック８
の継ぎ足しにより荷重支持を行い、切断を行った後、支
保工ブロック８の撤去により、徐々に降下される。FIG. 7 is a side view showing the next step of the method for replacing a viaduct according to the present invention. In FIG. 7, the new bridge girder 2
c is placed on the lifting device 7 for lifting, and the lifting block 8 is used by using the lifting device 7 in the same manner as described above.
And is lifted upwards. In addition, the replacement bridge girder 3a adjacent in the bridge axis direction is the same as the support block 8 described above.
After carrying out the load support by the replenishment and cutting, the support block 8 is removed and gradually lowered.
【００２９】図８は、本発明の高架橋の架替工法の次工
程を示す平面図で、前記架替橋桁３ａの降下、解体中に
通行橋桁３ｂの下方地上面の組立ヤードＢで新規橋桁の
組立が行われる。FIG. 8 is a plan view showing the next step of the viaduct rebuilding method according to the present invention. During the lowering and dismantling of the rebuilding bridge girder 3a, a new bridge girder is assembled at the assembly yard B below the ground surface of the passing bridge girder 3b. Assembly is performed.
【００３０】図９は、本発明の高架橋の架替工法の次工
程を示す側面図である。図９において、架替橋桁３ａが
撤去されたら、橋脚Ｐ2 上の橋桁連結ブロック１２の新
替えがトラッククレーン１３を使用して行われ、新規橋
桁２ｃの端部と接合（溶接または高力ボルト）が行われ
る。FIG. 9 is a side view showing the next step of the method of replacing a viaduct according to the present invention. 9, involved When girders 3a is removed, place the new bridge girder connecting block 12 on the bridge piers P 2 is performed using truck cranes 13, joined to the end of the new bridge girder 2c (welding or high-strength bolts ) Is performed.
【００３１】図１０は、本発明の高架橋の架替工法の次
工程を示す側面図で、新規橋桁３ｃが支保工ブロック８
の継ぎ足しにより揚重される。その間、橋軸方向に隣接
する架替橋桁４ａの撤去のための支保工昇降装置７が準
備され、以下、同様の工程で撤去、架設の架替が行われ
る。FIG. 10 is a side view showing the next step of the viaduct rebuilding method of the present invention.
It is lifted by the addition of. In the meantime, a shoring lifting device 7 for removing the replacement bridge girder 4a adjacent in the bridge axis direction is prepared, and thereafter, removal and replacement of the erection are performed in the same steps.
【００３２】架替橋桁２ａ，３ａ，４ａ，５ａ，・・の
架替が終了したら、反対側の通行橋桁２ｂ，３ｂ，４
ｂ，５ｂ，・・を架替橋桁とし、新規橋桁を通行車帯と
し、架替を行う。When the replacement of the bridges 2a, 3a, 4a, 5a,... Is completed, the bridges 2b, 3b, 4 on the opposite side are replaced.
.. b, 5b,.
【００３３】次に、図１１は、前記支保工昇降装置７の
側面図であり、図１２は、その平面図である。Next, FIG. 11 is a side view of the supporting / lifting device 7, and FIG. 12 is a plan view thereof.
【００３４】図１１および図１２において、支保工昇降
装置７は、架台７ａと流体シリンダー機構７ｂおよび支
保工ブロック８の受け部７ｃとからなる。In FIGS. 11 and 12, the support lifting device 7 comprises a gantry 7a, a fluid cylinder mechanism 7b, and a receiving portion 7c of the support block 8.
【００３５】さらに、支保工昇降装置７の側方には、支
保工ブロック台６が配置されており、該支保工台６の上
部には、支保工ブロック８が並べられており、切り梁８
ａにより連結されて支保工幅の支持単位を構成する。
尚、切り梁８ａは直交する方向にも設ける。 また、支
保工ブロック８の側面には、ブラケット８ｂが設けら
れ、前記流体シリンダー機構７ｂおよび受け部７ｃと係
合する。尚、６ａ，６ｂは、支保工ブロック８を支保工
昇降装置７方向へ押し出すジャッキ機構である。Further, a support block block 6 is arranged on the side of the support lifting device 7, and a support block 8 is arranged above the support block 6.
a to form a support unit having a support width.
In addition, the cutting beam 8a is also provided in a direction orthogonal to the direction. A bracket 8b is provided on the side surface of the support block 8, and engages with the fluid cylinder mechanism 7b and the receiving portion 7c. 6a and 6b are jack mechanisms for pushing the support block 8 toward the support lifting device 7.
【００３６】図１３（図１１のＡ−Ａ線側面図）は、支
保工昇降装置７の側面図である。図１３において、架台
７ａの下部は軌条９、１０上を摺動すべく接触してい
る。FIG. 13 (a side view taken along the line AA in FIG. 11) is a side view of the support lifting device 7. In FIG. 13, the lower part of the gantry 7a is in contact with the rails 9 and 10 so as to slide.
【００３７】８ｃは、前記ブラケット８ｂに付加して取
付けられる係合ブラケットで、流体シリンダー機構７ｂ
の反力受けとして、また、架台７ａの受け部７ｃにピン
７ｄで係止するため、および、揚重時の支保工ブロック
８の揺れ止め用として、取付けられる。Reference numeral 8c denotes an engagement bracket which is additionally attached to the bracket 8b, and is a fluid cylinder mechanism 7b.
For receiving the reaction force, and for locking with a pin 7d to the receiving portion 7c of the gantry 7a, and for preventing the support block 8 from swinging during lifting.
【００３８】８ｄは、支保工ブロック８のフランジ部で
あり、ボルト締結により複数の支保工ブロック８が一体
化される。Reference numeral 8d denotes a flange portion of the shoring block 8, and a plurality of shoring blocks 8 are integrated by bolting.
【００３９】また、最上段の支保工ブロック８と新規橋
桁２ｃの間にジャッキ１４を設けると橋桁の橋面レベル
調整が容易となり、新規橋桁の設置時に効果的である。If the jack 14 is provided between the uppermost support block 8 and the new bridge girder 2c, the bridge surface level of the bridge girder can be easily adjusted, which is effective when a new bridge girder is installed.
【００４０】図１４（ａ），（ｂ），（ｃ），（ｄ）
は、支保工昇降装置７により新規橋桁２ｃを上昇させる
工程の説明図であり、以下、工程順に述べる。FIGS. 14 (a), (b), (c), (d)
Is an explanatory view of a process of raising the new bridge girder 2c by the support lifting device 7, and will be described below in the order of processes.
【００４１】（ａ）新規橋桁２ｃを支持した最上段の支
保工ブロック８が流体シリンダー機構７ｂにより上昇さ
せられる。(A) The uppermost support block 8 supporting the new bridge girder 2c is raised by the fluid cylinder mechanism 7b.
【００４２】（ｂ）架台７ａの受け部７ｃに、前記最上
段支保工ブロック８の係合ブラケット８ｃがピン７ｄで
係止される。(B) The engaging bracket 8c of the uppermost support block 8 is locked to the receiving portion 7c of the gantry 7a by the pin 7d.
【００４３】（ｃ）最上段の支保工ブロック８が上昇し
た後の空間に、次段の支保工ブロック８が挿入され、そ
の後、流体シリンダー機構７ｂが下方へ縮小する。(C) The next support block 8 is inserted into the space after the uppermost support block 8 has risen, and then the fluid cylinder mechanism 7b is reduced downward.
【００４４】（ｄ）ピン７ｄが抜かれ、流体シリンダー
機構７ｂが次段の支保工ブロック８の係合ブラケット８
ｃに当接して押し上げる。次段支保工ブロック８の係合
ブラケット８ｃと架台７ａの受け部７ｃに再びピン７ｄ
が差し込まれて、次段の支保工ブロック８が係止され
る。(D) The pin 7d is removed, and the fluid cylinder mechanism 7b is engaged with the engaging bracket 8 of the next-stage support block 8.
Touch c and push up. The pin 7d is again inserted into the engaging bracket 8c of the next-stage support block 8 and the receiving portion 7c of the gantry 7a.
Is inserted, and the next-stage support block 8 is locked.
【００４５】以上の動作を繰り返すことにより、新規橋
桁２ｃの上昇動作を行う。また、架替橋桁２ａの撤去に
おいて、架替橋桁２ａを降下させる場合は、前記の工程
の逆となる。By repeating the above operation, the ascending operation of the new bridge girder 2c is performed. When removing the bridge girder 2a in removing the bridge girder 2a, the above steps are reversed.
【００４６】[0046]
【発明の効果】本発明は以上のとおりであるから、架替
高架橋幅の範囲内で橋桁の撤去、架設からなる架替工事
が行えるので、高架橋下の側部道路の渋滞がなく、特殊
な装置を使用しないので機材コストが安価で済み、か
つ、大型橋桁単位で行うので、作業が迅速であり、架替
期間の大幅な短縮化を図ることができる。As described above, since the present invention is as described above, the rebuilding work including removal of the bridge girder and erection can be performed within the range of the rebuilding viaduct width, so that there is no traffic jam on the side road under the viaduct and special Since no equipment is used, the equipment cost is low, and since the operation is performed in units of large bridge girders, the work is quick, and the rebuilding period can be greatly reduced.
【図１】本発明の高架橋の架替工法の工程を示す側面図FIG. 1 is a side view showing the steps of the viaduct replacement method of the present invention.
【図２】本発明の高架橋の架替工法の工程を示す平面図FIG. 2 is a plan view showing steps of a viaduct replacement method according to the present invention.
【図３】本発明の高架橋の架替工法の次工程を示す側面
図FIG. 3 is a side view showing the next step of the viaduct replacement method of the present invention.
【図４】本発明の高架橋の架替工法の次工程を示す側面
図FIG. 4 is a side view showing the next step of the viaduct replacement method of the present invention.
【図５】本発明の高架橋の架替工法の次工程を示す平面
図FIG. 5 is a plan view showing the next step of the viaduct replacement method of the present invention.
【図６】本発明の高架橋の架替工法の次工程を示す側面
図FIG. 6 is a side view showing the next step of the viaduct replacement method of the present invention.
【図７】本発明の高架橋の架替工法の次工程を示す側面
図FIG. 7 is a side view showing the next step of the viaduct replacement method of the present invention.
【図８】本発明の高架橋の架替工法の次工程を示す平面
図FIG. 8 is a plan view showing the next step of the viaduct replacement method of the present invention.
【図９】本発明の高架橋の架替工法の次工程を示す側面
図FIG. 9 is a side view showing the next step of the viaduct replacement method of the present invention.
【図１０】本発明の高架橋の架替工法の次工程を示す側
面図FIG. 10 is a side view showing the next step of the viaduct replacement method of the present invention.
【図１１】本発明に用いられる支保工昇降装置の側面図FIG. 11 is a side view of the lifting device used in the present invention.
【図１２】本発明に用いられる支保工昇降装置の平面図FIG. 12 is a plan view of a shoring elevating device used in the present invention.
【図１３】図１１のＡ−Ａ線側面図FIG. 13 is a side view taken along line AA of FIG. 11;
【図１４】（ａ），（ｂ），（ｃ），（ｄ）は、支保工
昇降装置により新規橋桁を上昇させる工程の説明図FIGS. 14 (a), (b), (c), and (d) are explanatory views of a step of raising a new bridge girder by a shoring elevating device.
１ 地上道路面 ２ 橋桁 ２ａ 架替橋桁 ２ｂ 通行橋桁 ２ｃ 新規橋桁 ３ 橋桁 ４ 橋桁 ５ 橋桁 ６ 支保工ブロック台 ７ 支保工昇降装置 ７ａ 架台 ７ｂ 流体シリンダー機構 ７ｃ 受け部 ７ｄ ピン ８ 支保工ブロック ８ａ 切り梁 ８ｂ ブラケット ８ｃ 係合ブラケット ８ｄ フランジ部 ９ 軌条 １０ 軌条 １１ 切断線 １２ 橋桁連結ブロック １３ トラッククレーン １４ ジャッキ DESCRIPTION OF SYMBOLS 1 Ground road surface 2 Bridge girder 2a Replacement bridge girder 2b Passing bridge girder 2c New bridge girder 3 Bridge girder 4 Bridge girder 5 Bridge girder 6 Supporting block stand 7 Supporting elevating device 7a Mounting base 7b Fluid cylinder mechanism 7c Receiving part 7d Pin 8 Supporting block 8a 8b Bracket 8c Engagement bracket 8d Flange 9 Rail 10 Rail 11 Cutting line 12 Bridge girder connecting block 13 Truck crane 14 Jack
Claims (4)
ぎ足して架替橋桁を支持させた後、前記架替橋桁を高架
橋体から切り離し、下部の支保工ブロックから順次撤去
することにより前記架替橋桁を降下させ、その後、前記
架替橋桁を解体、撤去した後、支保工ブロック上部に新
規橋桁を載置し、支保工ブロックを下方から上方へ順次
継ぎ足して新規橋桁を揚重し架設することを特徴とする
高架橋の架替工法。After the supporting girder is supported by sequentially extending the supporting blocks from below to supporting the bridge girder, the bridge girder is separated from the viaduct, and the bridge girder is sequentially removed from the lower supporting block. After that, after dismantling and removing the replacement bridge girder, a new bridge girder is placed on the top of the shoring block, and the shoring block is sequentially added from the bottom to the top, and the new bridge girder is lifted and erected. A feature of the viaduct replacement method.
より降下させ、解体中に、桁幅方向の隣接する区画で新
規橋桁の支保工ブロックへの載置を行い、前記架替橋桁
の解体撤去後に、前記新規橋桁を支保工ブロックに載置
した状態で前記架替橋桁の解体撤去後の位置に移動し、
その後、新規橋桁を支保工ブロックの順次継ぎ足しによ
り揚重し架設することを特徴とする高架橋の架替工法。2. The replacement bridge girder is lowered by sequentially removing the support block, and during dismantling, a new bridge girder is placed on the support block in an adjacent section in the girder width direction, and the replacement bridge girder is disassembled. After removal, move the new bridge girder to the position after dismantling removal of the replacement bridge girder with the new bridge girder placed on the shoring block,
After that, a new bridge girder is lifted and erected by sequentially adding support blocks, and the viaduct is replaced.
間に高さ調整用のジャッキを配置し、新規橋桁が架設位
置に達した後、前記ジャッキにより新規橋桁のレベル調
整を行いながら新規橋桁を架設することを特徴とする請
求項１または請求項２に記載の高架橋の架替工法。3. A jack for height adjustment is arranged between the uppermost shoring block and the new bridge girder. After the new bridge girder reaches the erection position, the jack adjusts the level of the new bridge girder while adjusting the level. The bridge construction method according to claim 1 or 2, wherein a bridge girder is erected.
われることを特徴とする請求項１、請求項２または請求
項３に記載の高架橋の架替工法。4. The method for rebuilding a viaduct according to claim 1, wherein the rebuilding of the viaduct is carried out by approximately の of the bridge girder width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4324697A JPH10237823A (en) | 1997-02-27 | 1997-02-27 | Method for replacing overhead bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4324697A JPH10237823A (en) | 1997-02-27 | 1997-02-27 | Method for replacing overhead bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10237823A true JPH10237823A (en) | 1998-09-08 |
Family
ID=12658538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4324697A Pending JPH10237823A (en) | 1997-02-27 | 1997-02-27 | Method for replacing overhead bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10237823A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007321475A (en) * | 2006-06-01 | 2007-12-13 | Mitsubishi Heavy Industries Bridge & Steel Structures Engineering Co Ltd | Barge for construction of bridge, and bridge removal method |
| JP2016037775A (en) * | 2014-08-08 | 2016-03-22 | 大成建設株式会社 | Replacement method for bridge girder |
| CN106638336A (en) * | 2016-10-21 | 2017-05-10 | 中国水利水电第八工程局有限公司 | Over-line continuous beam removing method and support for removing |
| JP2019199790A (en) * | 2018-05-18 | 2019-11-21 | Ｊｆｅエンジニアリング株式会社 | Superstructure member removal facility, superstructure member replacement facility, superstructure member removal method, and superstructure member replacement method |
| CN110984005A (en) * | 2020-01-17 | 2020-04-10 | 广东冠粤路桥有限公司 | Construction method for dismantling and hoisting No. 0 block of bridge |
| JP2020204263A (en) * | 2018-05-18 | 2020-12-24 | Ｊｆｅエンジニアリング株式会社 | Superstructure member conveyance facility and superstructure member conveyance method |
| CN112252212A (en) * | 2020-10-27 | 2021-01-22 | 中交路桥华南工程有限公司 | Method for dismantling prestressed concrete variable cross-section continuous beam bridge |
| JP2022009519A (en) * | 2018-05-18 | 2022-01-14 | Ｊｆｅエンジニアリング株式会社 | Superstructure member conveyance facility and superstructure member conveyance method |
-
1997
- 1997-02-27 JP JP4324697A patent/JPH10237823A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007321475A (en) * | 2006-06-01 | 2007-12-13 | Mitsubishi Heavy Industries Bridge & Steel Structures Engineering Co Ltd | Barge for construction of bridge, and bridge removal method |
| JP4727504B2 (en) * | 2006-06-01 | 2011-07-20 | 三菱重工鉄構エンジニアリング株式会社 | Bridge removal method |
| JP2016037775A (en) * | 2014-08-08 | 2016-03-22 | 大成建設株式会社 | Replacement method for bridge girder |
| CN106638336A (en) * | 2016-10-21 | 2017-05-10 | 中国水利水电第八工程局有限公司 | Over-line continuous beam removing method and support for removing |
| CN106638336B (en) * | 2016-10-21 | 2018-08-10 | 中国水利水电第八工程局有限公司 | Cross-line continuous beam method for dismounting and dismounting holder |
| JP2019199790A (en) * | 2018-05-18 | 2019-11-21 | Ｊｆｅエンジニアリング株式会社 | Superstructure member removal facility, superstructure member replacement facility, superstructure member removal method, and superstructure member replacement method |
| JP2020204263A (en) * | 2018-05-18 | 2020-12-24 | Ｊｆｅエンジニアリング株式会社 | Superstructure member conveyance facility and superstructure member conveyance method |
| JP2022009519A (en) * | 2018-05-18 | 2022-01-14 | Ｊｆｅエンジニアリング株式会社 | Superstructure member conveyance facility and superstructure member conveyance method |
| CN110984005A (en) * | 2020-01-17 | 2020-04-10 | 广东冠粤路桥有限公司 | Construction method for dismantling and hoisting No. 0 block of bridge |
| CN110984005B (en) * | 2020-01-17 | 2021-11-09 | 广东冠粤路桥有限公司 | Construction method for dismantling and hoisting No. 0 block of bridge |
| CN112252212A (en) * | 2020-10-27 | 2021-01-22 | 中交路桥华南工程有限公司 | Method for dismantling prestressed concrete variable cross-section continuous beam bridge |
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