JPH0868014A - Construction of composite steel pipe arch rib - Google Patents
Construction of composite steel pipe arch ribInfo
- Publication number
- JPH0868014A JPH0868014A JP20540194A JP20540194A JPH0868014A JP H0868014 A JPH0868014 A JP H0868014A JP 20540194 A JP20540194 A JP 20540194A JP 20540194 A JP20540194 A JP 20540194A JP H0868014 A JPH0868014 A JP H0868014A
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- arch rib
- ready
- concrete
- arch
- 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]
【産業上の利用分野】本発明は、アーチ橋の構成部材で
ある合成鋼管アーチリブを構築する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a synthetic steel pipe arch rib which is a component of an arch bridge.
【０００２】[0002]
【従来の技術】渓谷等に架設される橋は、優れた構造系
であることや、周囲の景観との兼ね合いからアーチ構造
系の橋が多く架設されている。従来、特にコンクリート
アーチ橋については立地条件によっては膨大な支保工を
要し、またその支保工基礎を作るために周辺斜面の環境
に大きな変更を加えざるをえない等の問題があった。2. Description of the Related Art Many bridges erected in valleys and the like have an arch structure because of their excellent structural structure and the balance with the surrounding landscape. Conventionally, there has been a problem that a huge amount of support work has been required especially for concrete arch bridges depending on the site conditions, and that the environment of the surrounding slopes has to be changed significantly in order to create the support work foundation.
【０００３】近年それらの問題を解決するため、種々の
工夫がなされ、本出願人も特開昭６０−１５７６３号公
報において、溶接組立鋼管内にコンクリートを充填して
剛性を高め、その周囲にコンクリートを巻き立てたアー
チリブを構築することによって、支保工を必要としない
アーチ橋の施工方法を提供した。その技術は、鋼板を溶
接してアーチリブ断面の縦方向寸法よりコンクリートか
ぶり分だけ小さい寸法の箱形中空断面の溶接組立鋼管を
形成し、この溶接組立鋼管複数本をアーチリブ断面の横
方向に並べて相互に接続し、この溶接組立鋼管を支持橋
台間に掛け渡し、箱形中空断面の溶接組立鋼管内にコン
クリートを充填して合成構造として剛性を付与し、この
合成鋼管アーチリブにコンクリートを巻き立ててコンク
リートアーチリブ構造体を構築するものである。この技
術は優れた工法であるが、比較的薄い鋼板を溶接して箱
形中空断面の溶接組立鋼管を形成するために、溶接組立
鋼管形成段階で溶接組立鋼管に溶接歪み等が発生しない
ように構造設計を工夫する必要があり、溶接の熟練者を
必要とする問題及び煩雑な作業を必要としコスト高にな
るという問題があった。In order to solve these problems in recent years, various measures have been taken. The applicant of the present invention also discloses in Japanese Patent Laid-Open No. 60-15763 that the welded and assembled steel pipe is filled with concrete to increase the rigidity and the concrete around it. By constructing an arch rib that has been rolled up, an arch bridge construction method that does not require support work was provided. The technique is to weld a steel sheet to form a welded assembled steel pipe with a box-shaped hollow cross-section that is smaller than the vertical dimension of the arch rib cross section by a concrete cover amount, and arrange multiple welded and assembled steel pipes in the transverse direction of the arch rib cross section. The welded and assembled steel pipes are hung across the support abutments, concrete is filled into the welded and assembled steel pipes with a box-shaped hollow section to give rigidity as a synthetic structure, and concrete is rolled up on the synthetic steel pipe arch ribs. The arch rib structure is constructed. This technique is an excellent construction method, but in order to form a welded assembled steel pipe with a box-shaped hollow section by welding relatively thin steel plates, it is necessary to prevent welding distortion and the like from occurring in the welded assembled steel pipe during the welding assembled steel pipe forming step. There has been a problem that it is necessary to devise the structural design, a problem that requires a welding expert and a complicated work are required, and the cost becomes high.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、アーチ橋の
構成部材である合成鋼管アーチリブを構築する場合に、
複雑な溶接作業をなるべく少なくした合理的な合成鋼管
アーチリブの構築方法を開発し、これを提供することを
目的とするものである。DISCLOSURE OF THE INVENTION The present invention, when constructing a synthetic steel pipe arch rib which is a constituent member of an arch bridge,
It is an object of the present invention to develop and provide a rational method for constructing a synthetic steel pipe arch rib that minimizes complicated welding work.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記問題点を
解決するために、次の技術手段を構成とするものであ
る。すなわち、複数段の既製鋼管をアーチリブの断面の
縦方向に配置し、これらの複数段の既製鋼管を連結材で
連結して組立体を構成し、この組立体を前記アーチリブ
の断面の横方向に複数列配置して横繁ぎ材で結合し、前
記既製鋼管内にコンクリートを充填してアーチリブを構
築することを特徴とする合成鋼管アーチリブの構築方法
である。The present invention has the following technical means in order to solve the above problems. That is, a plurality of stages of ready-made steel pipes are arranged in the longitudinal direction of the cross section of the arch rib, and a plurality of stages of the ready-made steel pipes are connected by a connecting member to form an assembly, and the assembly is arranged in the transverse direction of the cross section of the arch rib. A method for constructing a synthetic steel pipe arch rib, which comprises arranging a plurality of rows and connecting them with a horizontal member, and filling concrete in the ready-made steel pipe to construct an arch rib.
【０００６】コンクリートを充填した既製鋼管をアーチ
リブ断面の縦、横に配列した骨組みを支持橋台間に掛け
渡し、この骨組みにコンクリートを巻き立ててコンクリ
ートアーチリブ構造体を構築することは従来と同様であ
る。上記本発明方法において、前記既製鋼管として市販
の既製鋼管を用いると好適である。既製鋼管としては、
比較的薄肉の規格の角管、円筒管等を用いることができ
る。[0006] It is the same as the conventional method to construct a concrete arch rib structure by spanning a framework in which ready-made steel pipes filled with concrete are arranged vertically and horizontally with an arch rib cross section between supporting abutments and winding concrete on this framework. . In the above method of the present invention, it is preferable to use a commercially available ready-made steel pipe as the ready-made steel pipe. As a ready-made steel pipe,
A relatively thin standard rectangular tube, cylindrical tube, or the like can be used.
【０００７】[0007]
【作用】従来の合成鋼管アーチリブは、形鋼、鋼板等を
加工してこれをコンクリートアーチリブの断面の縦寸法
からコンクリートかぶりを除いた寸法に近い箱形中空断
面の組立鋼管を溶接により形成し、その中にコンクリー
トを充填して剛性を付与し、この箱形断面のコンクリー
ト充填構造材をアーチリブ断面内の横方向に並べて複数
本配置し、これらをコンクリート巻き立てして、コンク
リートアーチリブ構造体を形成していた。[Operation] The conventional synthetic steel pipe arch rib is formed by welding a shaped steel pipe, a steel plate, etc., and forming an assembled steel pipe having a box-shaped hollow cross section close to the vertical dimension of the cross section of the concrete arch rib excluding the concrete cover by welding. Concrete is filled into it to provide rigidity, and multiple concrete-filled structural materials with this box-shaped cross section are arranged side by side in the arch rib cross section, and these are rolled up concrete to form a concrete arch rib structure. Was.
【０００８】本発明では、上記の形鋼、鋼板等を加工し
てこれをコンクリートアーチリブの断面の縦寸法からコ
ンクリートかぶりを除いた寸法に近い箱形中空断面の組
立鋼管を溶接により形成することに代えて、コンクリー
トアーチリブの断面の縦方向に複数段の既製鋼管を配置
し、この既製鋼管を連結材で連結して組立体を形成する
ことによって、従来の箱形中空断面の組立鋼管を溶接製
作することを排除した。これに使用する既製鋼管として
は市販の既製鋼管を使用することができ、溶接構造の組
立鋼管を製作する必要がない。従って、箱形中空断面の
溶接組立鋼管の製作手間、歪を生じさせないための構造
設計上の制約、熟練溶接技術者確保の制約等は全くなく
なった。In the present invention, the above-mentioned shaped steel, steel plate, etc. are processed to form an assembled steel pipe having a box-shaped hollow cross-section close to the vertical dimension of the cross section of the concrete arch rib excluding the concrete cover by welding. Instead, by arranging multiple stages of prefabricated steel pipes in the vertical direction of the cross section of the concrete arch rib, and connecting the prefabricated steel pipes with a connecting material to form an assembly, the conventional box-shaped hollow cross-section steel pipes are welded and manufactured. Excluded. As a ready-made steel pipe used for this purpose, a commercially available ready-made steel pipe can be used, and it is not necessary to manufacture an assembled steel pipe having a welded structure. Therefore, the time and labor required for manufacturing a welded and assembled steel pipe having a box-shaped hollow cross section, restrictions on the structural design for preventing distortion, and restrictions for securing a skilled welding engineer have been completely eliminated.
【０００９】本発明の既製鋼管を縦方向に結合材で連結
して形成した既製鋼管組立体は、上下一体の構造物とし
て作用し、アーチリブの曲げ荷重に対して、アーチリブ
断面内の縦方向に剛性の高い鋼管が配置されているの
で、大きな曲げ応力を負担し、合理的である。さらに、
既製鋼管内にコンクリートを打設する時、漏洩を生じた
り、変形を生じたりすることがない。The ready-made steel pipe assembly of the present invention, which is formed by connecting the ready-made steel pipes in the vertical direction with a connecting material, acts as a vertically integrated structure, and with respect to the bending load of the arch ribs, the ready-made steel pipes are extended vertically in the arch rib cross section. Since the steel pipe with high rigidity is arranged, it bears a large bending stress and is rational. further,
When pouring concrete into a ready-made steel pipe, there is no leakage or deformation.
【００１０】既製鋼管は、規格品であり、これらを適切
に選択することによって、自由に設計をすることができ
る。また、安価で、入手が容易である。なお、既製鋼管
をアーチリブの断面の縦方向に配置する際に、既製鋼管
の相互間隔は、設計によって定めるとよく、制約されな
い。場合によっては、鋼管同士が接触する状態でもよ
い。The ready-made steel pipes are standard products, and can be freely designed by appropriately selecting them. It is also inexpensive and easily available. When arranging the ready-made steel pipes in the longitudinal direction of the cross section of the arch rib, the mutual interval between the ready-made steel pipes may be determined by design and is not limited. In some cases, the steel pipes may be in contact with each other.
【００１１】また、鋼管はアーチリブ断面の縦方向に３
段以上、多数段に配置してもよく、その縦方向配置は、
等間隔でもよく、隔離された位置に鋼管の集合体を形成
するようにしてもよい。なお、以上の説明では、アーチ
リブ断面内で縦方向に複数段の既製鋼管を配置すること
について述べたが、アーチ橋の規模によって一段の配置
でよい場合は、一段とすることが可能である。Further, the steel pipe is 3 in the longitudinal direction of the arch rib cross section.
It may be arranged in more than one stage, or in multiple stages, and its vertical arrangement is
They may be evenly spaced, or the aggregate of steel pipes may be formed at isolated positions. In the above description, a plurality of stages of ready-made steel pipes are arranged in the longitudinal direction within the arch rib cross section, but if it is sufficient to arrange one stage depending on the scale of the arch bridge, the number of stages can be one.
【００１２】[0012]
【実施例】図３は本発明の適用されるアーチ橋の例の側
面図である。河川や谷等の凹地１の上に架橋するため
に、基礎２、２に基部を支持されたアーチリブ１０を設
け、このアーチリブ上に柱２１を立設し、その上に橋体
２０が載置され、アーチ橋３が架設される。FIG. 3 is a side view of an example of an arch bridge to which the present invention is applied. In order to bridge over depressions 1 such as rivers and valleys, bases 2 and 2 are provided with arch ribs 10 whose bases are supported, pillars 21 are erected on the arch ribs, and bridges 20 are placed thereon. The arch bridge 3 is erected.
【００１３】図１は実施例のアーチリブ１０の断面を示
すもので、図３のＡ−Ａ矢視図である。このアーチリブ
１０は、断面の縦方向に既製鋼管１１ａ、１１ｂが連結
材１２によって直結されて既製鋼管組立体１１を形成
し、配置されている。この既製鋼管１１ａ、１１ｂはそ
の内部にコンクリート１３が充填されている。そしてこ
の既製鋼管組立体１１がアーチリブ１０の断面の横方向
に３列配列されている。この横方向の３セットの既製鋼
管組立体１１は、横繋ぎ材１５によって連結されてい
る。またこのアーチリブ１０は内部に空間１６を残し
て、巻き立てコンクリート１４によって巻き立てられて
いる。FIG. 1 shows a cross section of the arch rib 10 of the embodiment, and is a view taken along the line AA of FIG. The arch ribs 10 are arranged such that the ready-made steel pipes 11a and 11b are directly connected to each other by a connecting member 12 to form a ready-made steel pipe assembly 11 in the longitudinal direction of the cross section. The ready-made steel pipes 11a and 11b are filled with concrete 13 inside. The ready-made steel pipe assemblies 11 are arranged in three rows in the lateral direction of the cross section of the arch rib 10. The three sets of prefabricated steel pipe assemblies 11 in the lateral direction are connected by a lateral connecting member 15. Further, the arch rib 10 is wound up by a rolled-up concrete 14 leaving a space 16 inside.
【００１４】図２（ｂ）はこの既製鋼管１１ａ、１１ｂ
が連結材１２によって連結された既製鋼管組立体１１の
既製鋼管内部にコンクリート１３を打設した段階を示し
ている。図２（ａ）は、このような本願の実施例に対応
する従来技術の箱形の溶接組立鋼管３０にコンクリート
１３を内部に打設した状態を示している。実施例と比較
例の合成鋼管アーチリブの構造を比較して示すと次のと
おりである。FIG. 2B shows the ready-made steel pipes 11a and 11b.
Shows the stage where the concrete 13 is placed inside the ready-made steel pipe of the ready-made steel pipe assembly 11 connected by the connecting member 12. FIG. 2A shows a state in which concrete 13 is placed inside a box-shaped welded assembled steel pipe 30 of the related art corresponding to the embodiment of the present application. The structures of the synthetic steel pipe arch ribs of the example and the comparative example are shown in comparison with each other as follows.
【００１５】（例−１） アーチスパン：６５．８ｍ アーチリブ幅：４．４ｍ アーチリブ厚み：１．２〜１．８ｍ 使用鋼管：実施例：既製鋼管４００ｍｍＨ×４００ｍｍ
Ｗ×９ｍｍｔ 縦方向２本×横方向２組 比較例：溶接組立鋼管８００ｍｍＨ×４００ｍｍＷ×１
２ｍｍｔ １本×横方向２本使用 （例−２） アーチスパン：１００．０ｍ アーチリブ幅：６．８ｍ アーチリブ厚み：１．８〜２．２ｍ 使用鋼管：実施例：既製鋼管４００ｍｍＨ×４００ｍｍ
Ｗ×９ｍｍｔ 縦方向３本使用×横方向３組 比較例：溶接組立鋼管１２００ｍｍＨ×５００ｍｍＷ×
１２ｍｍｔ 横方向３本使用 次に、実施例のアーチリブの構築方法の全体工程を説明
する。(Example-1) Arch span: 65.8 m Arch rib width: 4.4 m Arch rib thickness: 1.2 to 1.8 m Steel pipe used: Example: Steel pipe 400 mmH x 400 mm
W × 9 mmt 2 pieces in vertical direction × 2 pieces in horizontal direction Comparative example: Welded assembled steel pipe 800 mmH × 400 mm W × 1
2 mmt 1 x 2 in horizontal direction (Example-2) Arch span: 100.0 m Arch rib width: 6.8 m Arch rib thickness: 1.8 to 2.2 m Steel pipe used: Example: ready-made steel pipe 400 mm H x 400 mm
W × 9 mmt Use 3 pieces in vertical direction x 3 sets in horizontal direction Comparative example: Welded assembly steel pipe 1200 mmH × 500 mmW ×
12 mmt Three horizontal directions are used Next, the overall steps of the method for constructing the arch rib of the embodiment will be described.
【００１６】イ）既製鋼管をアーチ曲率を形成する適切
な長さに切断し、長手方向接続フランジ等を取付け、上
下の既製鋼管１１ａ、１１ｂを上下連結材１２で縦に直
結し、既製鋼管組立体１１のブロックを作製する。この
ブロックには横繋ぎ材１５を取付けるためのガゼットプ
レート等の溶接加工を施しておく。また、既製鋼管上面
にコンクリート充填孔、充填確認孔、エア抜き孔の加工
をする。B) The ready-made steel pipe is cut to an appropriate length to form an arch curvature, a longitudinal connecting flange or the like is attached, and the upper and lower ready-made steel pipes 11a and 11b are directly connected vertically with the upper and lower connecting members 12 to form the ready-made steel pipe assembly. The block of the solid 11 is produced. This block is welded with a gusset plate or the like for attaching the horizontal connecting member 15. In addition, a concrete filling hole, a filling confirmation hole, and an air vent hole will be processed on the upper surface of the ready-made steel pipe.
【００１７】ロ）上記ブロックを架設現地に搬入して既
製鋼管１１ａ、１１ｂの長手方向を接続し、横方向を横
繋ぎ材１５で連結して組み立て、支持基礎上に架設す
る。 ハ）架設後、既製鋼管内にコンクリートを充填する。 ニ）充填したコンクリートの硬化を待って、巻き立てコ
ンクリートの型枠を取りつけ、既製鋼管組立体１１、横
繋ぎ材全体をコンクリートで巻き立て、コンクリートア
ーチリブ構造体を構築する。(B) The above block is brought into the construction site, the longitudinal directions of the prefabricated steel pipes 11a and 11b are connected, and the horizontal direction is connected by the horizontal connecting member 15 to be assembled, and the block is erected on the support foundation. C) After erection, fill ready-made steel pipe with concrete. D) Wait for the filled concrete to harden, attach a form of rolled-up concrete, and roll up the prefabricated steel pipe assembly 11 and the entire horizontal connecting material with concrete to construct a concrete arch rib structure.
【００１８】上記（例−１）の実施例のアーチリブで
は、溶接工程が従来の３０％以下に減少した。In the arch rib of the above-mentioned embodiment (Example-1), the welding process is reduced to 30% or less of the conventional one.
【００１９】[0019]
【発明の効果】本発明の合成鋼管アーチリブの構築方法
は、既製鋼管を使用し、構造設計が簡単になり、複雑な
溶接作業を削減し、溶接歪修正が不要となり、板取りロ
スが少なくなると共に、煩雑な作業を不要とし、作業工
程の減少、工期の短縮、コスト削減に寄与するところが
大である。The method of constructing a synthetic steel pipe arch rib of the present invention uses a ready-made steel pipe, simplifies the structural design, reduces complicated welding work, eliminates the need for welding distortion correction, and reduces stripping loss. At the same time, it does not require complicated work, and contributes to a reduction in work steps, a shortened construction period, and cost reduction.
【図１】本発明の実施例の合成鋼管アーチリブの断面図
である。FIG. 1 is a cross-sectional view of a synthetic steel pipe arch rib according to an embodiment of the present invention.
【図２】合成鋼管アーチリブの（ａ）従来の箱形溶接組
立鋼管の断面図、（ｂ）実施例の既製鋼管組立体の断面
図である。FIG. 2A is a sectional view of a conventional box-shaped welded assembled steel pipe of a synthetic steel pipe arch rib, and FIG. 2B is a sectional view of a ready-made steel pipe assembly of an embodiment.
【図３】アーチ橋の側面図である。FIG. 3 is a side view of the arch bridge.
１ 凹地 ２ 基礎 ３ アーチ橋 １０ アーチリブ １１ 既製鋼管組立体 １１ａ、１１ｂ
既製鋼管 １２ 連結材 １３ コンクリー
ト １４ 巻き立てコンクリート １５ 横繋ぎ材 １６ 空間DESCRIPTION OF SYMBOLS 1 Depression 2 Foundation 3 Arch bridge 10 Arch rib 11 Ready-made steel pipe assembly 11a, 11b
Ready-made steel pipe 12 Connecting material 13 Concrete 14 Rolled up concrete 15 Horizontal tie material 16 Space
Claims (1)
縦方向に配置し、これらの複数段の既製鋼管を連結材で
連結して組立体を構成し、該組立体を前記アーチリブの
断面の横方向に複数列配置して横繁ぎ材で結合し、前記
既製鋼管内にコンクリートを充填してアーチリブを構築
することを特徴とする合成鋼管アーチリブの構築方法。1. A plurality of stages of ready-made steel pipes are arranged in a longitudinal direction of a cross section of an arch rib, and a plurality of stages of the ready-made steel pipes are connected by a connecting member to form an assembly, and the assembly is made up of a cross section of the arch rib. A method for constructing a synthetic steel pipe arch rib, which comprises arranging a plurality of rows in a lateral direction, connecting them with a lateral member, and filling the prefabricated steel pipe with concrete to construct an arch rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20540194A JPH0868014A (en) | 1994-08-30 | 1994-08-30 | Construction of composite steel pipe arch rib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20540194A JPH0868014A (en) | 1994-08-30 | 1994-08-30 | Construction of composite steel pipe arch rib |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0868014A true JPH0868014A (en) | 1996-03-12 |
Family
ID=16506228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20540194A Pending JPH0868014A (en) | 1994-08-30 | 1994-08-30 | Construction of composite steel pipe arch rib |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0868014A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100392117B1 (en) * | 2001-04-17 | 2003-07-22 | (주)내경엔지니어링 | Method for constructing arch rib of arch bridge |
| WO2012008677A2 (en) * | 2010-07-15 | 2012-01-19 | 혜동브릿지 주식회사 | Composite girder for bridge construction |
| CN104389271A (en) * | 2014-12-01 | 2015-03-04 | 中铁山桥集团有限公司 | Stiff support for mounting arch feet of concrete-filled steel tube arch rib bridge |
| CN106284087A (en) * | 2016-08-30 | 2017-01-04 | 中铁第四勘察设计院集团有限公司 | Be suitable to the construction method of the cluster type assembly arch rib of narrow bridge |
| CN108716191A (en) * | 2018-08-16 | 2018-10-30 | 中交路桥北方工程有限公司 | A kind of concrete arch rib Covered with Angles sleeve-board group and its bracing means |
| CN109457592A (en) * | 2018-12-03 | 2019-03-12 | 中铁第四勘察设计院集团有限公司 | A kind of V-arrangement valley arch bridge across railway concrete greatly |
| CN113718623A (en) * | 2021-08-05 | 2021-11-30 | 贵州省公路工程集团有限公司 | Hollow steel pipe concrete arch bridge structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6015763A (en) * | 1983-07-05 | 1985-01-26 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | Interface controller |
-
1994
- 1994-08-30 JP JP20540194A patent/JPH0868014A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6015763A (en) * | 1983-07-05 | 1985-01-26 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | Interface controller |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100392117B1 (en) * | 2001-04-17 | 2003-07-22 | (주)내경엔지니어링 | Method for constructing arch rib of arch bridge |
| WO2012008677A2 (en) * | 2010-07-15 | 2012-01-19 | 혜동브릿지 주식회사 | Composite girder for bridge construction |
| WO2012008677A3 (en) * | 2010-07-15 | 2012-03-08 | 혜동브릿지 주식회사 | Composite girder for bridge construction |
| CN104389271A (en) * | 2014-12-01 | 2015-03-04 | 中铁山桥集团有限公司 | Stiff support for mounting arch feet of concrete-filled steel tube arch rib bridge |
| CN104389271B (en) * | 2014-12-01 | 2016-05-11 | 中铁山桥集团有限公司 | A kind of steel pipe concrete arch rib bridge arch pin is installed and is used stiffness support |
| CN106284087A (en) * | 2016-08-30 | 2017-01-04 | 中铁第四勘察设计院集团有限公司 | Be suitable to the construction method of the cluster type assembly arch rib of narrow bridge |
| CN108716191A (en) * | 2018-08-16 | 2018-10-30 | 中交路桥北方工程有限公司 | A kind of concrete arch rib Covered with Angles sleeve-board group and its bracing means |
| CN109457592A (en) * | 2018-12-03 | 2019-03-12 | 中铁第四勘察设计院集团有限公司 | A kind of V-arrangement valley arch bridge across railway concrete greatly |
| CN109457592B (en) * | 2018-12-03 | 2023-10-27 | 中铁第四勘察设计院集团有限公司 | V-shaped canyon long-span railway concrete arch bridge |
| CN113718623A (en) * | 2021-08-05 | 2021-11-30 | 贵州省公路工程集团有限公司 | Hollow steel pipe concrete arch bridge structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19980825 |