JP2018003526A - Replacement method for main cable of suspension bridge - Google Patents

Replacement method for main cable of suspension bridge Download PDF

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JP2018003526A
JP2018003526A JP2016134700A JP2016134700A JP2018003526A JP 2018003526 A JP2018003526 A JP 2018003526A JP 2016134700 A JP2016134700 A JP 2016134700A JP 2016134700 A JP2016134700 A JP 2016134700A JP 2018003526 A JP2018003526 A JP 2018003526A
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cable
main
stiffening girder
main cable
suspension
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JP6798082B2 (en
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良一 泊
Ryoichi Tomari
良一 泊
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Mitsui Zosen Steel Structures Eng Co Ltd
MITSUI ZOSEN STEEL STRUCTURES ENGINEERING CO Ltd
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Mitsui Zosen Steel Structures Eng Co Ltd
MITSUI ZOSEN STEEL STRUCTURES ENGINEERING CO Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a replacement method for a main cable of a suspension bridge in which a main cable of a suspension bridge is replaced without installing a temporary cable along the main cable prior to removing the main cable and eliminating complicated processes to an extent possible.SOLUTION: A diagonal suspension cable 11 is spanned between a main tower 2 and a stiffening girder 5 of a suspension bridge 1, for holding the stiffening girder 5. A hanger rope 4 is dismantled and removed under the condition, and a main cable 3 is replaced. The new hanger rope 4 is hung from the newly installed main cable 3, and the main cable 3 is made to hold the stiffening girder 5 while the hanger rope 4 supports the stiffening girder 5. Then, the diagonal suspension cable 11 is removed. A diagonal suspension steel tower 13 is installed outside of the main tower 2 when necessary, for having the diagonal suspension cable 11 spanned between the diagonal suspension steel tower 13 and the stiffening girder 5 and holding the stiffening girder 5.SELECTED DRAWING: Figure 3

Description

この発明は、山間部の渓谷や河口湾の断崖の間等に掛け渡されている吊り橋の主ケーブルを交換する吊り橋の主ケーブルの取替方法に関する。   The present invention relates to a method for replacing a main cable of a suspension bridge that replaces a main cable of a suspension bridge that is spanned between a valley in a mountainous area or a cliff in Kawaguchi Bay.

渓谷の両岸や河口湾を挟んだ断崖の間を通行するために掛け渡される橋梁では、橋脚を設置できずに長支間となることから、吊り橋が架設されている。吊り橋には列車や自動車の通行を目的とする大型のものから人の往来を目的とする小型のものまで種々のものが設置されている。特に、山間部等で人の往来を目的とする歩道橋の場合には、大きな幅員の交通路を要しないため、吊り橋が多用される。   Suspension bridges are built on the bridges that are bridged to pass between the cliffs across the gorge and Kawaguchi Bay, because the bridge piers cannot be installed and are long spans. Various types of suspension bridges are installed, ranging from large ones intended for trains and cars to small ones intended for traffic. In particular, in the case of a pedestrian bridge intended for traffic of people in mountainous areas, a suspension bridge is frequently used because it does not require a large width traffic path.

吊り橋は、主として、渓谷の両岸等に設置された主塔の塔頂を経由させた主ケーブルと、この主ケーブルに垂下させたハンガーロープの下端に支持させた補剛桁からなり、前記主ケーブルの端部をアンカーブロック等に固定する。補剛桁の両端部を両岸等に設置した橋脚に支持させる。この補剛桁に床版が設置されて歩行路が設けられる。   The suspension bridge mainly consists of a main cable passing through the top of the main tower installed on both sides of the valley, and a stiffening girder supported on the lower end of the hanger rope suspended from the main cable. Secure the end of the cable to the anchor block. Support both ends of the stiffening girder on the piers installed on both banks. A floor slab is installed on the stiffening girder to provide a walking path.

例えば、特許文献１には、主ケーブルを利用する摺動ビームを用いた吊橋補剛桁の引出し架設工法に用いる架設装置が開示されている。また、特許文献２には、ホーリングロープ長並びに駆動装置台数を最小限に抑え、且つ作業効率を向上し、工期の短縮と工事費の低減を図り得る吊橋用主ケーブルの架設方法及び装置が開示されている。   For example, Patent Document 1 discloses an erection device used in a method for pulling out a suspension bridge stiffening girder using a sliding beam using a main cable. Patent Document 2 discloses a suspension bridge main cable erection method and apparatus capable of minimizing the length of a holing rope and the number of drive devices, improving work efficiency, shortening the work period, and reducing the work cost. Has been.

特公平２−２２８０５号公報Japanese Patent Publication No. 22-22805 特開平１０−２３７８１９号公報Japanese Patent Laid-Open No. 10-237819

吊り橋の前記主ケーブルは載荷重を前記アンカーブロックに伝達させるよう作用するが、この主ケーブルが老朽化して十分な強度を維持できなくなった場合には、力の伝達を果たせず、繰り返し荷重を受けること等により破損してしまうおそれが生じるから、該主ケーブルを取り替える必要が生じる。   The main cable of the suspension bridge acts to transmit the loaded load to the anchor block. However, if the main cable becomes old and cannot maintain sufficient strength, it will not transmit force and will receive repeated loads. Therefore, it is necessary to replace the main cable.

主ケーブルを取り替える場合には、既設の主ケーブルを外すことになるが、前記補剛桁を支持させる必要がある。吊り橋の構造では主ケーブルに垂下させた前記ハンガーロープの下端に補剛桁を支持させてあるから、既設の主ケーブルの撤去に先立ってこのハンガーロープを保持させる必要があり、主ケーブルに沿って仮ケーブルを架設し、この仮ケーブルにハンガーロープを保持させる。また、この仮ケーブルを支持するための仮鉄塔を前記主塔の外側に設置する。仮ケーブルにハンガーロープを保持させて補剛桁を支持させた状態で、既設の主ケーブルを撤去する。撤去した主ケーブルに替えて新たに主ケーブルを架設し、これに新たなハンガーロープを垂下させて補剛桁を保持させる。その後、仮ケーブルと仮鉄塔とを撤去する。上述の仮ケーブルの架設施工と新たな主ケーブルの架設施工には、例えば特許文献２に開示された架設方法によることができる。   When replacing the main cable, the existing main cable is removed, but it is necessary to support the stiffening girder. In the structure of the suspension bridge, the stiffening girder is supported at the lower end of the hanger rope suspended from the main cable, so it is necessary to hold this hanger rope prior to the removal of the existing main cable. A temporary cable is installed and the hanger rope is held on the temporary cable. Moreover, a temporary iron tower for supporting this temporary cable is installed outside the main tower. While holding the hanger rope on the temporary cable and supporting the stiffening girder, remove the existing main cable. A new main cable is installed in place of the removed main cable, and a new hanger rope is suspended on the main cable to hold the stiffening girder. Then, the temporary cable and the temporary tower are removed. The above-described temporary cable erection and new main cable erection can be performed by the erection method disclosed in Patent Document 2, for example.

しかしながら、仮ケーブルと新たな主ケーブルとのそれぞれについて架設施工を行うことになるため、煩雑な作業を要する。また、工期が長くなってしまい、その間の吊り橋の使用が制限される期間が長期になってしまうおそれがある。   However, since construction work is performed for each of the temporary cable and the new main cable, a complicated operation is required. Moreover, a construction period becomes long and there exists a possibility that the period when the use of a suspension bridge in the meantime is restrict | limited may become long.

そこで、この発明は、煩雑な作業を極力なくして、工期の短縮化を図れる吊り橋の主ケーブルの取替方法を提供することを目的としている。   Accordingly, an object of the present invention is to provide a method for replacing a main cable of a suspension bridge that can reduce the construction period by minimizing complicated work.

前記目的を達成するための技術的手段として、この発明に係る吊り橋の主ケーブルの取替方法は、主塔間に掛け渡された主ケーブルに垂下されたハンガーロープに補剛桁が保持された吊り橋の前記主ケーブルの取替方法において、前記主塔と前記補剛桁とに斜吊りケーブルを架け渡して補剛桁を保持させて、前記主ケーブルを取り替えることを特徴としている。   As a technical means for achieving the above object, the main cable replacement method for the suspension bridge according to the present invention is such that the stiffening girder is held on the hanger rope suspended by the main cable spanned between the main towers. In the method for replacing the main cable of the suspension bridge, the main cable is replaced by holding a stiffening girder over the main tower and the stiffening girder so as to hold the stiffening girder.

前記斜吊りケーブルで主塔に補剛桁を保持させることによって、主ケーブルを補剛桁の保持状態から解放できるようにしたものである。補剛桁が斜吊りケーブルによって保持されており、この状態で既設の主ケーブルを取り外し、新たな主ケーブルを主塔間に掛け渡す。この新設の主ケーブルにハンガーロープを垂下させて該ハンガーロープに補剛桁を支持させる。   The main cable can be released from the holding state of the stiffening girder by holding the stiffening girder in the main tower with the slanting cable. The stiffening girder is held by the slanting cable. In this state, the existing main cable is removed and a new main cable is routed between the main towers. A hanger rope is suspended from the newly installed main cable to support the stiffening girder on the hanger rope.

また、請求項２の発明に係る吊り橋の主ケーブルの取替方法は、主塔間に掛け渡された主ケーブルに垂下されたハンガーロープに補剛桁が保持された吊り橋の前記主ケーブルの取替方法において、前記補剛桁に配された床版を交換し、前記主塔と補剛桁とに斜吊りケーブルを架け渡して補剛桁を保持させ、前記ハンガーロープを取り外し、既設の主ケーブルを新設の主ケーブルに取り替えて、新規のハンガーロープを取り付けて、新設の主ケーブルによって前記補剛桁を保持させ、前記斜吊りケーブルを取り外してなることを特徴としている。   According to a second aspect of the present invention, there is provided a method for replacing a main cable of a suspension bridge in which a stiffening girder is held on a hanger rope suspended by a main cable spanned between main towers. In the replacement method, the floor slab arranged on the stiffening girder is replaced, a slanting cable is bridged between the main tower and the stiffening girder to hold the stiffening girder, the hanger rope is removed, and the existing main spar is removed. The cable is replaced with a new main cable, a new hanger rope is attached, the stiffening girder is held by the new main cable, and the slanting cable is removed.

主ケーブルの取り替えと共に、床版等の他の構造要素を取り替える場合に関するものである。すなわち、補剛桁から既設の床版を取り外した後に、新たな床版を設置し、斜吊りケーブルを架け渡して補剛桁を保持させる。ハンガーロープを取り外して既設の主ケーブルを撤去する。新たな主ケーブルを架設して新たなハンガーロープを取り付け、これらに補剛桁を支持させる。次いで、斜吊りケーブルを撤去する。   The present invention relates to a case where other structural elements such as a floor slab are replaced together with replacement of the main cable. That is, after removing the existing floor slab from the stiffening girder, a new floor slab is installed, and the stiffening girder is held by spanning a slanting cable. Remove the hanger rope and remove the existing main cable. A new main cable is installed and a new hanger rope is attached, and a stiffening girder is supported by these. Next, the slanting cable is removed.

また、請求項３の発明に係る吊り橋の主ケーブルの取替方法は、前記主塔の外側に斜吊り用鉄塔を設置し、前記主塔に替えて該斜吊り用鉄塔と前記補剛桁とに前記斜吊りケーブルを掛け渡したことを特徴としている。   According to a third aspect of the present invention, there is provided a method for replacing a main cable of a suspension bridge by installing a diagonal suspension tower outside the main tower, and replacing the main tower with the oblique suspension tower and the stiffening girder. It is characterized in that the slanting cable is stretched over.

既設の主塔に斜吊りケーブルを取り付けて補剛桁を保持させた場合に、該主塔に十分な強度を得られないおそれがある場合には、斜吊りケーブルを取り付けるための斜吊り用鉄塔を設置することで、主塔に負担をかけないようにしたものである。   When a slanting cable is attached to an existing main tower and a stiffening girder is held, if there is a risk that sufficient strength cannot be obtained in the main tower, a slanting tower for attaching the slanting cable By installing, it is designed not to put a burden on the main tower.

また、請求項４の発明に係る吊り橋の主ケーブルの取替方法は、前記補剛桁の下部にアウターケーブルを配設し、該アウターケーブルに前記斜吊りケーブルを連繋させたことを特徴としている。   The main cable replacement method for the suspension bridge according to the invention of claim 4 is characterized in that an outer cable is disposed under the stiffening girder and the oblique suspension cable is connected to the outer cable. .

斜吊りケーブルの本数や補剛桁への取付位置によっては安定して補剛桁を保持できない場合には、補剛桁の下部にアウターケーブルを配設して、これに斜吊りケーブルを連繋させることで、斜吊りケーブルにかかる力を分散させて、補剛桁を安定して保持できるようにしたものである。   If the stiffening girder cannot be stably held depending on the number of slanting cables and the mounting position on the stiffening girder, an outer cable is placed under the stiffening girder and the slanting cable is linked to this. Thus, the force applied to the slanting cable is dispersed so that the stiffening girder can be stably held.

この発明に係る吊り橋の主ケーブルの取替方法によれば、主ケーブルの交換に先立って、斜吊りケーブルによって補剛桁を保持させるから、主ケーブルの架設施工が一度でよい。このため、仮ケーブルを架設施工する煩雑な作業を行うことがなく、取り替え作業に要する工期の短縮化を図ることができる。   According to the method for replacing the main cable of the suspension bridge according to the present invention, the stiffening girder is held by the slanting cable prior to the replacement of the main cable. For this reason, the complicated work which constructs and installs a temporary cable is not performed, and the construction period required for the replacement work can be shortened.

主ケーブルを取り替える状態にある吊り橋の側面図である。It is a side view of a suspension bridge in the state which replaces a main cable. 補剛桁に設置されている床版を取り替える状態を示す吊り橋の側面図である。It is a side view of a suspension bridge which shows the state which replaces the floor slab installed in the stiffening girder. 主塔と補剛桁とに斜吊りケーブルを架け渡す状態を示す吊り橋の側面図である。It is a side view of a suspension bridge which shows the state which bridges a slanting cable between a main tower and a stiffening girder. ハンガーロープを取り外す状態を示す吊り橋の側面図である。It is a side view of a suspension bridge which shows the state which removes a hanger rope. 主ケーブルを取り替える状態を示す吊り橋の側面図である。It is a side view of a suspension bridge which shows the state which replaces a main cable. ハンガーロープを取り付ける状態を示す吊り橋の側面図である。It is a side view of a suspension bridge which shows the state which attaches a hanger rope. 斜吊りケーブルを取り外す際の状態を示す吊り橋の側面図である。It is a side view of a suspension bridge which shows the state at the time of removing a slanting cable.

以下、図示した実施の形態に基づいてこの発明に係る吊り橋の主ケーブルの取替方法を具体的に説明する。   Hereinafter, the method for replacing the main cable of the suspension bridge according to the present invention will be specifically described based on the illustrated embodiment.

図１に示すように、吊り橋１は両側に設けられた主塔２、２に主ケーブル３が架設され、この主ケーブル３にハンガーロープ４が取り付けられて垂下され、該ハンガーロープ４によって補剛桁５が支持されている。また、補剛桁５には床版６が載置されて通行路が設置されている。   As shown in FIG. 1, the suspension bridge 1 has a main cable 3 installed on main towers 2, 2 provided on both sides, a hanger rope 4 is attached to the main cable 3, and the hanger rope 4 stiffens the hanger. Girder 5 is supported. Further, a floor slab 6 is placed on the stiffening girder 5 and a passage is installed.

主ケーブル３を取り外すのに先立って、床版６や高欄を取り外す。このとき、これらの荷重が取り除かれることにより補剛桁５等が主ケーブル３の張力により浮き上がるおそれがある。この場合には、補剛桁５と橋脚７との間に仮受８を介在させて、浮き上がった状態の補剛桁５を支承させる。   Prior to removing the main cable 3, the floor slab 6 and the rail are removed. At this time, when these loads are removed, the stiffening girder 5 and the like may be lifted by the tension of the main cable 3. In this case, the provisional support 8 is interposed between the stiffening girder 5 and the pier 7 to support the stiffening girder 5 in a lifted state.

次いで、図２に示すように、補剛桁５に新たな床版９を設置する。この場合、例えば、既設の吊り橋１の床版６にコンクリート床版が設置されている構造では、これを鋼床版に変更することで橋体の軽量化を図ることも可能である。また、床版９を設置する場合には、重機10により片押し架設によることができる。   Next, as shown in FIG. 2, a new floor slab 9 is installed on the stiffening girder 5. In this case, for example, in the structure in which the concrete slab is installed on the floor slab 6 of the existing suspension bridge 1, it is possible to reduce the weight of the bridge body by changing this to a steel slab. Further, when installing the floor slab 9, it can be installed by pushing the heavy machine 10.

床版９が設置された状態で、図３に示すように、主塔２と補剛桁５とに斜吊りケーブル11を掛け渡して補剛桁５を主塔２に保持させる。この場合、斜吊りケーブル11は補剛桁５の下弦材部に固定することが好ましい。また、必要に応じて補剛桁５の下部にアウターケーブル12を張設してこれに斜吊りケーブル11を連繋させて、斜吊りケーブル11にかかる力を分散させる。さらに、主塔２の外側に斜吊り用鉄塔13を設置して、主塔２に替えて該斜吊り用鉄塔13に斜吊りケーブル11を支持させることもできる。   With the floor slab 9 installed, as shown in FIG. 3, the slanting cable 11 is spanned between the main tower 2 and the stiffening girder 5 to hold the stiffening girder 5 on the main tower 2. In this case, the slanting cable 11 is preferably fixed to the lower chord member of the stiffening girder 5. Further, if necessary, an outer cable 12 is stretched under the stiffening girder 5 and a slanting cable 11 is connected to this to disperse the force applied to the slanting cable 11. Furthermore, a slanting tower 13 can be installed outside the main tower 2, and the slanting cable 11 can be supported by the slanting tower 13 instead of the main tower 2.

斜吊りケーブル11が掛け渡された状態で、図４に示すように、ハンガーロープ４を解体する。このとき、高所作業車15と引付け用仮ロープ16を使用して負荷状態で解体する。なお、橋体の死荷重にトラスの強度が十分に対抗するように、必要に応じて補強する。   As shown in FIG. 4, the hanger rope 4 is disassembled in a state where the slanting cable 11 is stretched. At this time, the vehicle is disassembled under load using the aerial work platform 15 and the temporary pulling rope 16. Reinforce as needed so that the strength of the truss sufficiently resists the dead load of the bridge body.

ハンガーロープ４を解体した後、主ケーブル３を取り替える。この取付作業は、図５に示すように、ウィンチ14を用いて既設の主ケーブル３を解体すると共に、新設の主ケーブル３を架設する。   After the hanger rope 4 is disassembled, the main cable 3 is replaced. As shown in FIG. 5, this attachment work involves disassembling the existing main cable 3 using the winch 14 and installing the new main cable 3.

架設された新規の主ケーブル３に、図６に示すように、新たなハンガーロープ４を垂下させ、その下端部に補剛桁５を支持させる。この際、新設された前記床版９の荷重に応じてハンガーロープ４の仕様を適合させる。   As shown in FIG. 6, a new hanger rope 4 is suspended from the newly constructed main cable 3, and the stiffening girder 5 is supported at the lower end thereof. At this time, the specifications of the hanger rope 4 are adapted according to the load of the newly installed floor slab 9.

その後、前記斜吊りケーブル11を撤去し、必要に応じて設置した斜吊り用鉄塔13を撤去する。   Thereafter, the slanting cable 11 is removed, and the slanting tower 13 installed as necessary is removed.

この発明に係る吊り橋の主ケーブルの取替方法によれば、既設の主ケーブルに沿って架設する仮ケーブルに替えて斜吊りケーブルを設けて新設の主ケーブルを架設するため、仮ケーブルの架設作業がなく、煩雑な作業を減じて主ケーブルの取替施工を行えるので、工期の短縮化を図れると共に、取替施工に要する費用を削減できて、吊り橋の主ケーブルの取替の促進を図ることに寄与する。   According to the replacement method of the main cable of the suspension bridge according to the present invention, the installation work of the temporary cable is performed in order to install the oblique main cable and install the new main cable instead of the temporary cable installed along the existing main cable. The main cable replacement work can be performed with less troublesome work, so the construction period can be shortened and the cost required for the replacement work can be reduced to promote the replacement of the main cable of the suspension bridge. Contribute to.

１ 吊り橋
２ 主塔
３ 主ケーブル
４ ハンガーロープ
５ 補剛桁
６ 床版
７ 橋脚
８ 仮受
９ 床版
10 重機
11 斜吊りケーブル
12 アウターケーブル
13 斜吊り用鉄塔
14 ウィンチ
1 Suspension bridge 2 Main tower 3 Main cable 4 Hanger rope 5 Stiffening girder 6 Floor slab 7 Bridge pier 8 Temporary support 9 Floor slab
10 heavy machinery
11 Angled cable
12 Outer cable
13 Oblique steel tower
14 Winch

Claims (4)

主塔間に掛け渡された主ケーブルに垂下されたハンガーロープに補剛桁が保持された吊り橋の前記主ケーブルの取替方法において、
前記主塔と前記補剛桁とに斜吊りケーブルを架け渡して補剛桁を保持させて、前記主ケーブルを取り替えることを特徴とする吊り橋の主ケーブルの取替方法。 In the method of replacing the main cable of the suspension bridge in which the stiffening girder is held on the hanger rope suspended by the main cable spanned between the main towers,
A method for replacing a main cable of a suspension bridge, wherein a slant suspension cable is bridged between the main tower and the stiffening girder to hold the stiffening girder and the main cable is replaced. 主塔間に掛け渡された主ケーブルに垂下されたハンガーロープに補剛桁が保持された吊り橋の前記主ケーブルの取替方法において、
前記補剛桁に配された床版を交換し、
前記主塔と補剛桁とに斜吊りケーブルを架け渡して補剛桁を保持させ、
前記ハンガーロープを取り外し、
既設の主ケーブルを新設の主ケーブルに取り替えて、
新規のハンガーロープを取り付けて、新設の主ケーブルによって前記補剛桁を保持させ、
前記斜吊りケーブルを取り外してなることを特徴とする吊り橋の主ケーブルの取替方法。 In the method of replacing the main cable of the suspension bridge in which the stiffening girder is held on the hanger rope suspended by the main cable spanned between the main towers,
Replace the floor slab placed on the stiffening girder,
Hold the stiffening girder over the main tower and the stiffening girder by hanging a slanting cable,
Remove the hanger rope,
Replace the existing main cable with the new main cable,
Attach a new hanger rope, hold the stiffening girder with the new main cable,
A method for replacing a main cable of a suspension bridge, wherein the oblique suspension cable is removed. 前記主塔の外側に斜吊り用鉄塔を設置し、前記主塔に替えて該斜吊り用鉄塔と前記補剛桁とに前記斜吊りケーブルを掛け渡したことを特徴とする請求項１または請求項２に記載の吊り橋の主ケーブルの取替方法。   The oblique suspension steel tower is installed outside the main tower, and the oblique suspension cable is spanned between the oblique suspension steel tower and the stiffening girder instead of the main tower. The replacement method of the main cable of the suspension bridge according to Item 2. 前記補剛桁の下部にアウターケーブルを配設し、該アウターケーブルに前記斜吊りケーブルを連繋させたことを特徴とする請求項１から請求項３までのいずれかに記載の吊り橋の主ケーブルの取替方法。   The main cable of the suspension bridge according to any one of claims 1 to 3, wherein an outer cable is disposed below the stiffening girder, and the oblique cable is connected to the outer cable. Replacement method.
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CN109914273A (en) * 2019-03-20 2019-06-21 中交路桥建设有限公司 A kind of suspension bridge straddle-type hoist cable replacement device and method
CN110593138A (en) * 2018-06-12 2019-12-20 王双其 Method for replacing main cable of suspension bridge
CN110820523A (en) * 2019-11-22 2020-02-21 柳州欧维姆机械股份有限公司 Cable strand connecting structure for replacing main cable of suspension bridge, anchorage structure and construction method
CN110820524A (en) * 2019-11-22 2020-02-21 柳州欧维姆机械股份有限公司 Connecting structure, fixing structure, new main cable system and construction method for replacing main cable of suspension bridge
CN110820522A (en) * 2019-11-22 2020-02-21 柳州欧维姆机械股份有限公司 Sling conversion device for replacing main cable of suspension bridge, sling and construction method
CN111455862A (en) * 2020-04-30 2020-07-28 中铁大桥科学研究院有限公司 Construction method of continuous stiffening beam suspension bridge
CN111553015A (en) * 2020-05-14 2020-08-18 广西交科集团有限公司 Accurate displacement control method in replacement process of arch bridge suspender
KR102162535B1 (en) * 2019-12-23 2020-10-08 주식회사 케이블브릿지 Two-story suspension pdedstrian bridge with improved performance against wind force
CN112144422A (en) * 2020-09-15 2020-12-29 中国电建市政建设集团有限公司 Construction method for dismantling temporary support system of large-span ultra-wide continuous steel box girder
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CN110593138A (en) * 2018-06-12 2019-12-20 王双其 Method for replacing main cable of suspension bridge
CN109914273A (en) * 2019-03-20 2019-06-21 中交路桥建设有限公司 A kind of suspension bridge straddle-type hoist cable replacement device and method
CN109914273B (en) * 2019-03-20 2023-11-21 中交路桥建设有限公司 Device and method for replacing riding type sling of suspension bridge
CN110820523A (en) * 2019-11-22 2020-02-21 柳州欧维姆机械股份有限公司 Cable strand connecting structure for replacing main cable of suspension bridge, anchorage structure and construction method
CN110820524A (en) * 2019-11-22 2020-02-21 柳州欧维姆机械股份有限公司 Connecting structure, fixing structure, new main cable system and construction method for replacing main cable of suspension bridge
CN110820522A (en) * 2019-11-22 2020-02-21 柳州欧维姆机械股份有限公司 Sling conversion device for replacing main cable of suspension bridge, sling and construction method
KR102232982B1 (en) * 2019-12-19 2021-03-29 주식회사 케이블브릿지 Suspension pedestrian bridge using segment girder with truss structure
KR102162535B1 (en) * 2019-12-23 2020-10-08 주식회사 케이블브릿지 Two-story suspension pdedstrian bridge with improved performance against wind force
CN111455862B (en) * 2020-04-30 2022-03-25 中铁大桥科学研究院有限公司 Construction method of continuous stiffening beam suspension bridge
CN111455862A (en) * 2020-04-30 2020-07-28 中铁大桥科学研究院有限公司 Construction method of continuous stiffening beam suspension bridge
CN111553015A (en) * 2020-05-14 2020-08-18 广西交科集团有限公司 Accurate displacement control method in replacement process of arch bridge suspender
CN111553015B (en) * 2020-05-14 2022-08-30 广西交科集团有限公司 Accurate displacement control method in replacement process of arch bridge suspender
CN112144422A (en) * 2020-09-15 2020-12-29 中国电建市政建设集团有限公司 Construction method for dismantling temporary support system of large-span ultra-wide continuous steel box girder

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