JPH0978531A - Work execution method for arch bridge - Google Patents
Work execution method for arch bridgeInfo
- Publication number
- JPH0978531A JPH0978531A JP23393895A JP23393895A JPH0978531A JP H0978531 A JPH0978531 A JP H0978531A JP 23393895 A JP23393895 A JP 23393895A JP 23393895 A JP23393895 A JP 23393895A JP H0978531 A JPH0978531 A JP H0978531A
- Authority
- JP
- Japan
- Prior art keywords
- arch
- concrete
- bridge
- balloon
- arch rib
- 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
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明はアーチ橋施工方法
に関するものであり、特に、気球式型枠を用いることに
よりアーチリブ形成を簡易化したアーチ橋施工方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arch bridge construction method, and more particularly to an arch bridge construction method that simplifies arch rib formation by using a balloon type mold.
【0002】[0002]
【従来の技術】従来のアーチ橋は、橋脚間にH形鋼で半
円形の支保工を組み立て、その支保工上に鋼製の型枠を
配設して鉄筋を組んだ後、コンクリートを打設してアー
チリブを形成する。そして、該アーチリブの側縁に側壁
を設け、橋梁を構築する。2. Description of the Related Art In a conventional arch bridge, an H-shaped steel semicircular support structure is assembled between piers, a steel formwork is arranged on the support structure to assemble steel bars, and then concrete is struck. Installed to form arch ribs. Then, a side wall is provided on the side edge of the arch rib to construct a bridge.
【0003】[0003]
【発明が解決しようとする課題】アーチ橋は、温度変化
等に伴う部材変位をアーチリブの伸縮により吸収するこ
とができるため、桁橋の如く橋の途中に伸縮継手を設け
る必要がない。また、車両通行用に使用した場合の走行
性も良好で、景観的にも優れている。Since the arch bridge can absorb the member displacement due to the temperature change and the like by the expansion and contraction of the arch rib, it is not necessary to provide an expansion joint in the middle of the bridge unlike the girder bridge. In addition, it has good running performance when used for passing vehicles, and is also excellent in scenery.
【0004】しかし、アーチリブ形成のために半円形の
支保工を精度良く組み立てる必要があるため、桁橋より
も施工が困難で工費も大きい。径間数の多い長軸のアー
チ橋では、効率化のために一個の支保工をレールに沿っ
て移動させて一径間毎にアーチリブを形成する場合もあ
るが、レール及び該レールを載せる桟橋を付設する必要
が生じ、また、支保工の移動には風等により転倒する危
険も伴う。However, since it is necessary to accurately assemble the semicircular support work for forming the arch rib, the construction is more difficult and the construction cost is higher than that of the girder bridge. For long-axis arch bridges with a large number of spans, one support structure may be moved along the rail to form arch ribs for each span for efficiency, but the rail and the pier on which the rail is mounted It becomes necessary to attach a support, and the movement of the support work involves the risk of falling due to wind or the like.
【0005】そこで、アーチリブを簡易に形成すること
ができるようにして、アーチ橋施工を効率化するために
解決すべき技術的課題が生じてくるのであり、本発明は
該課題を解決することを目的とする。Therefore, there arises a technical problem to be solved in order to efficiently form the arch bridge by making it possible to easily form the arch rib, and the present invention intends to solve the problem. To aim.
【0006】[0006]
【課題を解決するための手段】本発明は上記課題を解決
するために提案されたものであり、気密性、且つ、可撓
性を有する気球式型枠を下部構造上の径間に搬入して、
該気球式型枠に空気を充填することによりアーチリブ内
壁面形状に膨張させ、且つ、内圧を上昇させて該気球式
型枠に所定強度を付与した後、該気球式型枠周面に沿っ
てコンクリートを打設してアーチリブを形成するアーチ
橋施工方法を提供するものである。SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned problems, in which an airtight and flexible balloon mold is carried into a space on the lower structure. hand,
By filling the balloon mold with air to expand the arch rib inner wall surface shape and increasing the internal pressure to give the balloon mold a predetermined strength, the balloon mold is shaped along the peripheral surface thereof. An arch bridge construction method for placing concrete to form arch ribs.
【0007】ここで、気球式型枠の膨張時に該気球式型
枠に加えられる内圧は、該気球式型枠上に布設又は打設
されるアーチリブ用溶接金網やアーチリブ用コンクリー
ト等の重量に耐え得る程度に設定される。Here, the internal pressure applied to the balloon mold during expansion of the balloon mold resists the weight of the welded wire mesh for arch ribs or concrete for arch ribs laid or cast on the balloon mold. It is set to the extent that it can be obtained.
【0008】[0008]
【発明の実施の形態】以下、本発明の実施の形態を図1
乃至図4に従って詳述する。図1は5径間のアーチ橋を
施工する中間段階を示したものであり、橋台1,1と橋
脚2,2…とにより下部構造3が構築され、左方より2
径間分のアーチリブ4,4が完成し、現在、中央の径間
のアーチリブ4形成に取りかかっている。而して、この
中央の径間には下部構造3上面に足場5が組まれ、該足
場5上に気球式型枠6が載設されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
4 to 4 will be described in detail. Fig. 1 shows an intermediate stage of construction of an arch bridge with 5 spans. A substructure 3 is constructed by abutments 1, 1 and piers 2, 2 ...
The arch ribs 4 and 4 for the span have been completed, and the arch rib 4 at the center is now being formed. Thus, a scaffold 5 is assembled on the upper surface of the lower structure 3 in the center span, and a balloon mold 6 is mounted on the scaffold 5.
【0009】該気球式型枠6はゴム又は樹脂等の気密
性、且つ、可撓性材質にて形成されており、しぼんだ状
態で搬入された後、内部に空気が充填されて半円柱状に
膨張する。この時、図2に図示する如く、該気球式型枠
6の上方にアーチ状の帯材7,7…を並設することによ
り、該気球式型枠6がアーチリブ内壁面形状を型造るよ
うにするとともに、内部圧力を十分に上昇させて後述す
る溶接金網やコンクリートの重量に耐え得るようにす
る。The balloon mold 6 is made of an airtight and flexible material such as rubber or resin, and is carried in a deflated state and then filled with air to form a semi-columnar shape. Expands to. At this time, as shown in FIG. 2, by arranging arch-shaped strips 7, 7 ... in parallel above the balloon type mold 6, the balloon type mold 6 forms an arch rib inner wall surface shape. In addition, the internal pressure is sufficiently increased to withstand the weight of welded wire netting and concrete described later.
【0010】そして、図3に図示する如く、PC鋼材
8,8…を前記気球式型枠6の周面に沿って橋軸に直交
するように配置し、更に、溶接金網9を布設する。然る
後に吹き付けコンクリート機にて該気球式型枠6の周面
上にコンクリート10を巻厚約30cmになるまで4〜5
層に分けて吹き付ける。コンクリート10が約300kg
f/cm2 の強度に達したら前記PC鋼材8,8…を引張し
てプレストレスを導入する。そして、前記コンクリート
10の硬化後、その外周面に防水用コーティングを施
す。斯くして、中央の径間のアーチリブ4が完成する。As shown in FIG. 3, PC steel materials 8, 8 ... Are arranged along the peripheral surface of the balloon mold 6 so as to be orthogonal to the bridge axis, and a welding wire net 9 is laid. After that, the concrete 10 is wound on the peripheral surface of the balloon type mold 6 with a spraying concrete machine until the thickness becomes about 30 cm.
Spray in layers. Concrete 10 is about 300kg
When the strength of f / cm 2 is reached, the PC steel materials 8, 8 ... Are pulled to introduce prestress. After the concrete 10 is hardened, a waterproof coating is applied to its outer peripheral surface. Thus, the arch rib 4 having the center span is completed.
【0011】その後、前記気球式型枠6内の圧縮空気を
抜き取って収縮させる。そして、足場5を中央の径間か
ら取り外してその右隣りの径間に構築し、再び前記気球
式型枠6を用いて前述した場合と同様にして、中央の右
隣りの径間にアーチリブを形成する。このように一個の
気球式型枠6を転用することにより全径間に亘って同一
形状のアーチリブ4,4…が形成される。Thereafter, the compressed air in the balloon mold 6 is extracted and contracted. Then, the scaffold 5 is detached from the center span and is constructed on the right adjacent span, and again in the same manner as described above using the balloon type mold 6, an arch rib is provided on the center right adjacent span. Form. By diverting one balloon mold 6 in this way, arch ribs 4, 4, ... Of the same shape are formed over the entire diameter.
【0012】アーチリブ4,4…完成後は、図4に図示
する如く、該アーチリブ4の両側に側壁11,11及び
壁高欄12,12を打設し、中詰め土13を充填した
後、路面となるプレキャスト版14を敷設する。斯くし
て、アーチ橋の施工が完了する。After completion of the arch ribs 4, 4, ..., As shown in FIG. 4, side walls 11, 11 and wall rails 12, 12 are placed on both sides of the arch rib 4, and after filling the filling soil 13, the road surface The precast plate 14 is laid. Thus, the construction of the arch bridge is completed.
【0013】尚、本発明は、本発明の精神を逸脱しない
限り種々の改変を為すことができ、そして、本発明が該
改変されたものに及ぶことは当然である。The present invention can be modified in various ways without departing from the spirit of the present invention, and it goes without saying that the present invention covers the modified products.
【0014】[0014]
【発明の効果】以上説明したように、本発明は気球式型
枠をアーチリブの型枠として用いるように構成されてい
る。従って、該気球式型枠に圧縮空気を充填するのみで
良く、従来の如く支保工を半円形状に組み立てる必要が
無いので、アーチリブ施工工程が極めて簡易化される。
また、一個の気球式型枠を複数の径間に転用する場合に
は、一つのアーチリブ形成後該気球式型枠を収縮させて
次の径間に搬送すれば良く、支保工をレールに沿って移
動させる手段と比べると、簡易迅速で且つ安全性も優れ
ている。As described above, the present invention is configured to use the balloon type mold as the arch rib mold. Therefore, it is only necessary to fill the balloon mold with compressed air, and it is not necessary to assemble the supporting structure into a semicircular shape as in the conventional case, so that the arch rib construction process is extremely simplified.
Further, when one balloon type frame is diverted to a plurality of diameters, it is sufficient to shrink the balloon type frame after forming one arch rib and convey it to the next radius. It is simple, quick, and safe, as compared with a means for moving it.
【0015】更に、複数の気球式型枠で複数のアーチリ
ブを同時に形成すれば、従来のH形鋼による支保工より
も極めて簡単迅速にアーチ橋を施工することができる。
斯くして、アーチ橋施工の難点が解消され、工費面でも
桁橋に充分対抗することができる。Further, if a plurality of balloon ribs are used to form a plurality of arch ribs at the same time, the arch bridge can be constructed much more easily and quickly than the conventional H-shaped steel support work.
Thus, the difficulty of arch bridge construction is solved, and the girder bridge can be sufficiently countered in terms of construction cost.
【図1】本発明の一実施の形態を示し、5径間のアーチ
橋を施工する中間段階の側面図。FIG. 1 is a side view showing an embodiment of the present invention at an intermediate stage of constructing an arch bridge having 5 spans.
【図2】気球式型枠を膨張させた状態を示す斜視図。FIG. 2 is a perspective view showing a state where the balloon mold is inflated.
【図3】図1に於いて、中央の径間のアーチリブが形成
される段階を示す要部側面図。FIG. 3 is a side view of an essential part showing a stage in which an arch rib having a center span is formed in FIG. 1;
【図4】アーチ橋完成時の図1のA−A線端面図。FIG. 4 is an end view taken along the line AA of FIG. 1 when the arch bridge is completed.
1 橋台 2 橋脚 3 下部構造 4 アーチリブ 5 足場 6 気球式型枠 7 帯材 8 PC鋼材 9 溶接金網 10 コンクリート 11 側壁 12 壁高欄 13 中詰め土 14 プレキャスト版 1 Abutment 2 Bridge pier 3 Substructure 4 Arch rib 5 Scaffold 6 Balloon formwork 7 Band material 8 PC steel material 9 Welded wire mesh 10 Concrete 11 Sidewall 12 Wall balustrade 13 Filled soil 14 Precast version
Claims (1)
枠を下部構造上の径間に搬入して、該気球式型枠に空気
を充填することによりアーチリブ内壁面形状に膨張さ
せ、且つ、内圧を上昇させて該気球式型枠に所定強度を
付与した後、該気球式型枠周面に沿ってコンクリートを
打設してアーチリブを形成することを特徴とするアーチ
橋施工方法。1. An airtight and flexible balloon mold is carried into a space on a lower structure, and the balloon mold is filled with air to expand into an arch rib inner wall surface shape. And, an arch bridge construction method characterized by forming an arch rib by placing concrete along the peripheral surface of the balloon mold after increasing the internal pressure to give a predetermined strength to the balloon mold. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23393895A JP3056981B2 (en) | 1995-09-12 | 1995-09-12 | Arch bridge construction method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23393895A JP3056981B2 (en) | 1995-09-12 | 1995-09-12 | Arch bridge construction method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0978531A true JPH0978531A (en) | 1997-03-25 |
JP3056981B2 JP3056981B2 (en) | 2000-06-26 |
Family
ID=16962974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23393895A Expired - Fee Related JP3056981B2 (en) | 1995-09-12 | 1995-09-12 | Arch bridge construction method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3056981B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103406733A (en) * | 2013-08-21 | 2013-11-27 | 安徽鸿路钢结构(集团)股份有限公司 | Method for fabricating great bridge arch rib |
CN108252220A (en) * | 2018-01-02 | 2018-07-06 | 中铁广州工程局集团有限公司 | A kind of construction method of super-large span stiff skeleton |
CN108625272A (en) * | 2018-06-27 | 2018-10-09 | 中铁二院工程集团有限责任公司 | A kind of large-span concrete Arch Bridge Ribs method for controlling crack and construction |
CN108797359A (en) * | 2018-06-27 | 2018-11-13 | 中铁二院工程集团有限责任公司 | A kind of large span arch bridge with Stiffness frame arch ring concrete strength grading optimization method |
CN110685224A (en) * | 2019-09-25 | 2020-01-14 | 中国五冶集团有限公司 | Cast-in-place concrete encircles strutting arrangement |
CN113062199A (en) * | 2021-04-10 | 2021-07-02 | 中铁广州工程局集团有限公司 | Construction method for anti-corrosion concrete outer cladding layer of wading section of arched beam |
-
1995
- 1995-09-12 JP JP23393895A patent/JP3056981B2/en not_active Expired - Fee Related
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103406733A (en) * | 2013-08-21 | 2013-11-27 | 安徽鸿路钢结构(集团)股份有限公司 | Method for fabricating great bridge arch rib |
CN103406733B (en) * | 2013-08-21 | 2016-11-16 | 安徽鸿路钢结构(集团)股份有限公司 | Bridge arch rib manufacture method |
CN108252220A (en) * | 2018-01-02 | 2018-07-06 | 中铁广州工程局集团有限公司 | A kind of construction method of super-large span stiff skeleton |
CN108625272A (en) * | 2018-06-27 | 2018-10-09 | 中铁二院工程集团有限责任公司 | A kind of large-span concrete Arch Bridge Ribs method for controlling crack and construction |
CN108797359A (en) * | 2018-06-27 | 2018-11-13 | 中铁二院工程集团有限责任公司 | A kind of large span arch bridge with Stiffness frame arch ring concrete strength grading optimization method |
CN110685224A (en) * | 2019-09-25 | 2020-01-14 | 中国五冶集团有限公司 | Cast-in-place concrete encircles strutting arrangement |
CN113062199A (en) * | 2021-04-10 | 2021-07-02 | 中铁广州工程局集团有限公司 | Construction method for anti-corrosion concrete outer cladding layer of wading section of arched beam |
CN113062199B (en) * | 2021-04-10 | 2022-08-16 | 中铁广州工程局集团有限公司 | Construction method for anti-corrosion concrete outer cladding layer of wading section of arched beam |
Also Published As
Publication number | Publication date |
---|---|
JP3056981B2 (en) | 2000-06-26 |
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