JP5050228B2 - Ramen bridge construction method with cane member - Google Patents

Ramen bridge construction method with cane member Download PDF

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JP5050228B2
JP5050228B2 JP2005325892A JP2005325892A JP5050228B2 JP 5050228 B2 JP5050228 B2 JP 5050228B2 JP 2005325892 A JP2005325892 A JP 2005325892A JP 2005325892 A JP2005325892 A JP 2005325892A JP 5050228 B2 JP5050228 B2 JP 5050228B2
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cane member
girder
cane
pier
ramen bridge
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博文 亀川
保隆 佐々木
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株式会社横河ブリッジ
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本願発明は方杖部材付きラーメン橋施工方法に関するものである。 The present invention relates to Hotsue member with rigid frame bridge construction how.

昨今の橋梁の技術開発は、コスト縮減に関する取り組みがかなりの部分を占めている。鋼材とコンクリートとを組み合わせた複合構造のラーメン橋（複合ラーメン橋）はコスト縮減の切り札的存在となっている。その代表的なものとして、鋼２主Ｉ桁と中間橋脚の中柱頭部を剛結したラーメン橋がある。この複合ラーメン橋は従前の複合構造でないラーメン橋の最大適用支間長６０ｍよりも長い支間長に適用でき，支間長８１．５ｍの実績がある。   In recent technological development of bridges, efforts related to cost reduction occupy a considerable part. A composite structure ramen bridge (composite ramen bridge) combining steel and concrete has become a trump card for cost reduction. A typical example is a ramen bridge in which steel 2 main I girders and the middle column head of the intermediate pier are rigidly connected. This composite ramen bridge can be applied to a span length longer than the maximum applicable span length of 60m of the conventional rigid frame bridge, which has a track length of 81.5m.

前記複合ラーメン橋は図１３に示すように、コンクリート版Ａの底面にＩ型鋼Ｂが２本平行に取り付けられた複合構造の桁Ｃを、橋脚Ｄの上に連続架設されている。このラーメン橋は、夫々の橋脚Ｄの上に桁Ｃを設置固定し、橋脚Ｄに前方斜め上方と後方斜め上方に突出する方杖部材や斜ベント部材などの支保工Ｅを仮設し、その仮設の支保工Ｅの上に桁Ｃを設置すると共にその桁Ｃを橋脚Ｄの上の桁に連結固定し、それら桁Ｃの前後に多数の桁Ｃを連結して連続架設して施工し、ラーメン橋完了後に仮設の支保工Ｅを取り外している。   As shown in FIG. 13, the composite rigid frame bridge has a composite structure girder C in which two I-shaped steels B are attached in parallel to the bottom surface of a concrete plate A, and is continuously installed on the bridge pier D. In this ramen bridge, a girder C is installed and fixed on each pier D, and support works E such as a cane member and a diagonal vent member projecting diagonally forward and upward to the pier D are temporarily installed. The girder C is installed on the support E, and the girder C is connected and fixed to the girder on the bridge pier D, and a number of girder C are connected before and after the girder C and constructed continuously. After the bridge is completed, the temporary supporter E is removed.

複合構造のラーメン橋は前記のように支間長は長くできるが、支間長が８０ｍ程度を超えると中間支点部に発生する曲げモーメント（図１２ａ）が増大するため中間支点部の主桁高Ｈ（図１２ｃ）が３ｍ以上必要となる。しかし、陸上輸送の制約から３ｍ以上のものを輸送することはできないため主桁Ｆ（図１２ｃ）を上下に２分割して（Ｆ1、Ｆ2）輸送している。この場合、水平継手の設置や現場での地組み作業が必要になり、工場製造後の追加コストが発生する。また、支保工Ｅはあくまでも仮設のものであり、施工完了後の取り外し作業が面倒である。 As described above, the span length of the composite structure ramen bridge can be increased. However, when the span length exceeds about 80 m, the bending moment generated in the intermediate fulcrum portion (FIG. 12a) increases, so the main girder height H ( FIG. 12c) requires 3 m or more. However, since it is not possible to transport 3m or more due to restrictions on land transportation, the main girder F (FIG. 12c) is divided into two parts (F 1 , F 2 ). In this case, installation of a horizontal joint and grounding work at the site are required, and additional costs after factory production occur. Moreover, the support work E is a temporary thing to the last, and the removal work after construction completion is troublesome.

本願発明者らは、中間支点部に発生する曲げモーメントの縮減、主桁高３ｍ以下の実現、方杖部材の取り外し作業の面倒の解消について鋭意研究を重ねて本願発明を開発した。   The inventors of the present application have developed the present invention through extensive research on reducing the bending moment generated at the intermediate fulcrum, realizing a main girder height of 3 m or less, and eliminating the trouble of removing the staff member.

本願発明の方杖部材付きラーメン橋施工方法は、請求項１記載のように橋脚上に桁を設置固定し、その桁の前後に他の桁を連結して連続架設するラーメン橋施工方法において、前記橋脚の橋軸方向における前面及び後面に、橋脚と桁の間に配置される方杖部材を設置するための台座又はソケットを形成し、前記方杖部材の下端部を前記台座又はソケットに剛結して、方杖部材を前記橋脚に固定し、前記方杖部材の上に設置した桁を当該方杖部材に固定し、その桁とその前後の他の桁を連続架設し、ラーメン橋完成後も前記方杖部材を取り外すことなくラーメン橋の一部材として残す方法である。
この場合、請求項２記載のように桁の下部に固定された連結台座に、方杖部材の上端部を剛結することで、桁を方杖部材の上に固定することも、請求項３記載のように方杖部材用の中空の金属管を橋脚と桁の間に設置した後に、その方杖部材用金属管内にコンクリートを充填してコンクリート充填管構造（ＣＦＴ：Concrete Filed Steel Tube）の方杖部材を形成することも、請求項４記載のように、予め、コンクリート充填管構造の方杖部材の上部を桁に連結固定しておき、その桁を吊り上げてその方杖部材の下部を橋脚に剛結することも、請求項５記載のように、予め、方杖部材用の中空の金属管の上部を桁に連結しておき、その桁と共に方杖部材用金属管も吊り上げ、その方杖部材用金属管の下部を橋脚に剛結してから、方杖部材用金属管にコンクリートを充填して方杖部材を形成することもできる。
更に、請求項６記載のように、桁のウエブ両面に、それぞれ半割れの中空金属管を固定するとともに、その金属管内にコンクリートを充填して、桁にコンクリート充填管構造の補剛材を形成することもできる。 The ramen bridge construction method with a cane member of the present invention is a ramen bridge construction method in which a girder is installed and fixed on the pier as in claim 1 and another girder is connected continuously before and after the girder. A pedestal or socket for installing a cane member disposed between the pier and the girder is formed on the front and rear surfaces of the pier in the bridge axis direction, and the lower end of the cane member is rigidly attached to the pedestal or socket. The brace member is fixed to the pier, the girder installed on the cane member is secured to the cane member, and the girder and the other girder are continuously installed to complete the ramen bridge. It is the method of leaving behind as a member of a ramen bridge, without removing the said cane member later.
In this case, the girder can be fixed on the cane member by rigidly connecting the upper end of the cane member to the connecting base fixed to the lower part of the girder as described in claim 2. After installing a hollow metal tube for a cane member between the bridge pier and the girder as described, the metal tube for the cane member is filled with concrete to provide a concrete filled tube structure (CFT: Concrete Filed Steel Tube). In forming the cane member, as described in claim 4, the upper part of the concrete-filled tubular structure cane is connected and fixed to the beam in advance, and the lower part of the cane member is lifted by lifting the beam. In addition to being rigidly connected to the pier, the upper part of the hollow metal tube for the cane member is connected to the girder in advance, and the metal tube for the cane member is lifted together with the girder, After rigidly connecting the lower part of the metal pipe for the cane member to the bridge pier, connect it to the metal pipe for the cane member. A cane member can also be formed by filling a cleat.
Furthermore, as described in claim 6, a half-cracked hollow metal tube is fixed to both sides of the web of the girder, and concrete is filled in the metal tube to form a stiffener of the concrete-filled tube structure in the girder. You can also

本願の方杖部材付きラーメン橋は、橋脚と、桁と、橋脚と桁の間に配置される方杖部材と、を備え、前記橋脚の橋軸方向における前面及び後面には、方杖部材を設置するための台座又はソケットが形成され、前記方杖部材は、その下端部が前記台座又はソケットに剛結されることで前記橋脚に固定され、前記橋脚上に設置固定された桁と、前記方杖部材上に設置固定された桁と、その前後の桁が連結されて連続架設され、方杖部材はラーメン橋完成後も取り外されることなくラーメン橋に残されてラーメン橋の一部を構成する構造とした。
この場合、方杖部材を、又は方杖部材及び桁のウエブに形成される補剛材を、中空の金属管内にコンクリートを充填したコンクリート充填管構造（ＣＦＴ）とした。
また、桁の下部に連結台座が固定されるとともに、その連結台座に方杖部材の上端部が剛結されることで、方杖部材が桁に固定されるものとすることもできる。 Hotsue member with rigid frame bridge of the cancer, and bridges the legs, and columns, comprising: a Hotsue member arranged between the piers and columns, and the front and rear surfaces in the bridge axis direction of the pier, Hotsue A pedestal or socket for installing a member is formed, and the lower part of the cane member is fixed to the pier by being rigidly connected to the pedestal or socket, and a girder installed and fixed on the pier. The girder installed and fixed on the cane member and the girder before and after the girder are connected and continuously erected, and the cane member is left on the ramen bridge without being removed after the ramen bridge is completed. It was set as the structure which comprises.
In this case, the square wand, or Hotsue member and stiffener formed digits web was concrete filling pipe structures filled with concrete hollow metal tube (CFT).
Moreover , while a connection base is fixed to the lower part of a girder , an upper end part of a cane member is rigidly connected to the connection base, and a cane member can also be fixed to a girder.

本願発明の請求項１〜６の方杖部材付きラーメン橋施工方法は次のような効果がある。
（１）桁の架設時に橋脚と桁の間に方杖部材を設けるので、方杖部材の設置作業も桁の設置作業も容易になる。
（２）ラーメン橋完成後も方杖部材を取り外すことなくラーメン橋の一部材として残すので、方杖部材取り外し作業が不要となり、ラーメン橋の施工が容易になる。
（３）方杖部材を桁の設置前に橋脚の前方斜め上方と後方斜め上方に突出させて形成し、その方杖部材の上に桁を設置固定するので、方杖部材への桁の設置固定、他の方杖部材との連結作業がし易くなる。
（４）橋脚と桁間に金属管を設け、その金属管にコンクリートを充填してコンクリート充填管構造（ＣＦＴ）の方杖部材を形成すれば、プレキャストされているコンクリート充填管構造の方杖部材を設置する場合よりも金属管の配置作業が容易になる。また、金属管だけであるため軽量であり、その吊り上げや設置に大型クレーンを必要とせず、大型クレーンを搬入しにくい施工現場での施工が可能となる。
（５）予め、コンクリート充填管構造の方杖部材（プレキャスト方杖部材）の上部を桁に連結固定しておき、その桁を吊り上げてその方杖部材の下部を橋脚に連結固定すれば、桁の吊り上げと方杖部材の吊り上げを同時に行うことができ、作業性が良くなる。
（６）予め、方杖部材用金属管の上部を桁に連結しておき、その桁と共に方杖部材用金属管も吊り上げ、その方杖部材用金属管の下部を橋脚に連結してから、方杖部材用金属管にコンクリートを充填して方杖部材を形成すれば、桁の吊り上げと方杖部材用金属管の吊り上げを同時に行うことができ、作業性が良くなる。又、方杖部材用金属管は軽量であるため、金属管の吊り上げや設置に大型クレーンを必要としないので、施工現場に大型クレーンを搬入しにくい場所での施工も可能となる。
（７）桁に金属管を設け、その金属管内にコンクリートを充填して、桁にコンクリート充填管構造の補剛材を形成すれば、前記コンクリート充填を方杖部材用金属管へのコンクリート充填と同時に行うことができるので、補剛材の形成も容易である。 The ramen bridge construction method with a cane member according to claims 1 to 6 of the present invention has the following effects.
(1) Since the cane member is provided between the bridge pier and the girder when the girder is installed, the installation work of the cane member and the girder can be facilitated.
(2) Even after the ramen bridge is completed, it remains as a member of the ramen bridge without removing the cane member, so that it is not necessary to remove the cane member, and the construction of the ramen bridge is facilitated.
(3) Since the cane member is formed by projecting diagonally forward and upward to the rear of the pier before installation of the girder, and installing and fixing the girder on the cane member, installation of the girder on the cane member It becomes easy to fix and connect with other cane members.
(4) If a metal pipe is provided between the bridge pier and the girder and concrete is filled into the metal pipe to form a concrete-filled pipe structure (CFT) cane member, a precast concrete-filled pipe structure cane member The arrangement work of the metal tube becomes easier than the case of installing. Moreover, since it is only a metal pipe, it is lightweight, does not require a large crane for its lifting and installation, and construction on a construction site where it is difficult to carry in a large crane is possible.
(5) If the upper part of the concrete-filled pipe structure cane member (precast cane member) is connected and fixed to the girder in advance, the girder is lifted and the lower part of the cane member is connected and fixed to the bridge pier. Can be lifted simultaneously and the cane member can be lifted simultaneously, improving workability.
(6) In advance, the upper part of the metal pipe for the cane member is connected to the girder, the metal pipe for the cane member is also lifted together with the girder, and the lower part of the metal pipe for the cane member is connected to the pier, If the cane member is formed by filling the metal pipe for the cane member with concrete, the lifting of the girders and the lifting of the metal pipe for the cane member can be performed simultaneously, and the workability is improved. In addition, since the metal pipe for the cane member is lightweight, it does not require a large crane for lifting or installing the metal pipe, so that it is possible to perform construction in a place where it is difficult to carry the large crane into the construction site.
(7) If a metal pipe is provided in the girder, concrete is filled in the metal pipe, and the stiffener of the concrete-filled pipe structure is formed in the girder, the concrete filling is applied to the metal pipe for the cane member. Since it can be performed simultaneously, it is easy to form a stiffener.

本願の方杖部材付きラーメン橋は次のような効果がある。
（１）桁の架設時に形成された方杖部材が、ラーメン橋完成後も取り外されることなく、ラーメン橋の一部材としてラーメン橋に残されているので桁、橋脚の荷重負担が方杖部材に分担されて軽減し、ラーメン橋の中間支点部に発生する曲げモーメントが低減する。
（２）方杖部材がＣＦＴであるため強度に優れたものとなる。
（３）橋脚からの方杖部材の突出角度を４５度前後、桁への方杖部材の取り付け位置を中央径間との支間長比率で０．１５程度とすると、中間支点部に発生する曲げモーメントの低減効果は大きい。
（４）方杖部材を現場施工するので工場製作費のコストが低減する。 If wand with ramen bridge of this gun has the following effects.
(1) Since the cane member formed at the time of erection of the girder is not removed after the ramen bridge is completed, it remains in the ramen bridge as a member of the ramen bridge. This reduces the bending moment generated at the intermediate fulcrum of the ramen bridge.
(2) Since the cane member is CFT, it has excellent strength.
(3) When the protrusion angle of the cane member from the bridge pier is about 45 degrees and the attachment position of the cane member to the girder is about 0.15 in the ratio of the span length to the center span, the bending that occurs at the intermediate fulcrum portion The effect of reducing the moment is great.
(4) Since the staff members are constructed on site, the factory production cost is reduced.

（方杖部材付きラーメン橋施工方法の実施形態１）
本願発明の方杖部材付きラーメン橋施工方法及び方杖部材付きラーメン橋の実施形態の一例を図１〜図３に示す。この実施形態は支間割７５ｍ＋２＠９０ｍ＋７５ｍの４径間連続鋼２主Ｉ桁の複合ラーメン橋（図１２ｂ）の場合であり、方杖部材がＣＦＴ構造の場合である。この施工方法は以下の手順で行われる。
（１）図１のように多数本の橋脚１を立設し、橋脚１の施工時に夫々の橋脚１の上部前面と上部後面にコンクリート製の台座２を斜め上向きに形成しておく。
（２）図１のように橋脚１の柱頭部に桁３をクレーン４で吊り上げて設置する。
（３）図２（ａ）のように方杖部材用金属管１０をクレーン４で吊り上げて、その下部を前方の台座２に設置し、方杖部材用金属管１０を橋脚１の前方斜め上方に突設する。
（４）図２（ｂ）のように方杖部材用金属管１０をクレーン４で吊り上げて、その下部を後方の台座２に設置し、方杖部材用金属管１０を橋脚１の後方斜め上方に突設する。
（５）図２（ｃ）のように前方の方杖部材用金属管１０の上端部を、クレーン４で吊り上げた桁３に図３のように連結固定し、その桁３を橋脚１の柱頭部の上の桁３の前方に連結固定する。
（６）図２（ｄ）のように後方の方杖部材用金属管１０の上端部を、クレーン４で吊り上げた桁３に図３のように連結固定し、その桁３を橋脚１の柱頭部の上の桁３の後方に連結固定する。
（７）図２（ｄ）の状態で、方杖部材用金属管１０の上端寄りの充填孔２８（図３）から金属管１０内にコンクリートを充填して、ＣＦＴ構造の方杖部材５とする。
（８）前記１〜７の工程を繰り返して、夫々の橋脚１の柱頭部の上の桁３と方杖部材５の上の桁３を連結固定し、これらの桁３の前後に他の桁を連結固定してラーメン橋を完成する。
（９）ラーメン橋が完成しても方杖部材５は取り外さず、そのまま残してラーメン橋の一部とする。
（１０）前記方杖部材５の上の桁３の前後への他の桁３の連結（張出し架設）は、トラッククレーンとか他の機器を使用して、従来からの施工方法で行うことも、他の施工方法で行うこともできる。 (Embodiment 1 of a ramen bridge construction method with a cane member)
An example of the embodiment of the ramen bridge construction method with a cane member and the ramen bridge with a cane member of the present invention is shown in FIGS. This embodiment is a case of a composite rigid frame bridge (Fig. 12b) of a 4-span continuous steel 2 main I-girder with a span split of 75m + 2 @ 90m + 75m, and a case member having a CFT structure. This construction method is performed according to the following procedure.
(1) As shown in FIG. 1, a large number of piers 1 are erected, and concrete bases 2 are formed obliquely upward on the upper front surface and upper rear surface of each pier 1 when the piers 1 are constructed.
(2) As shown in FIG. 1, the girder 3 is lifted and installed on the column head of the pier 1 by the crane 4.
(3) As shown in FIG. 2A, the cane member metal pipe 10 is lifted by the crane 4 and the lower part thereof is installed on the front pedestal 2, and the cane member metal pipe 10 is obliquely above the pier 1. To project.
(4) As shown in FIG. 2 (b), the cane member metal pipe 10 is lifted by the crane 4, the lower part thereof is installed on the rear pedestal 2, and the cane member metal pipe 10 is obliquely above and behind the pier 1. To project.
(5) As shown in FIG. 2 (c), the upper end portion of the metal pipe 10 for the front cane member is connected and fixed to the girder 3 lifted by the crane 4 as shown in FIG. It is connected and fixed in front of the spar 3 above the section.
(6) As shown in FIG. 2 (d), the upper end portion of the rear cane member metal pipe 10 is connected and fixed to the girder 3 lifted by the crane 4 as shown in FIG. It is connected and fixed to the back of the upper beam 3.
(7) In the state of FIG. 2 (d), the concrete is filled into the metal tube 10 from the filling hole 28 (FIG. 3) near the upper end of the metal tube 10 for the cane member, and the cane member 5 having the CFT structure To do.
(8) The steps 1 to 7 are repeated, and the girders 3 on the column heads of the respective piers 1 and the girders 3 on the cane member 5 are connected and fixed. To complete the ramen bridge.
(9) Even if the ramen bridge is completed, the wand member 5 is not removed and is left as it is as a part of the ramen bridge.
(10) The connection (overhanging construction) of the other girder 3 to the front and rear of the girder 3 on the cane member 5 can be performed by a conventional construction method using a truck crane or other equipment. It can also be performed by other construction methods.

（方杖部材付きラーメン橋施工方法の実施形態２）
本願発明では、予め、桁３に前記方杖部材用金属管１０の上部を取り付けておき、桁３をクレーンで吊り上げると、方杖部材用金属管１０も同時に吊り上げられるようにし、その方杖部材用金属管１０の下端を橋脚１の台座２に連結固定し、図３のように台座２と桁３の間に配置された方杖部材用金属管１０内にその充填孔２８からコンクリートを充填してＣＦＴ構造の方杖部材５とし、その繰り返しにより橋脚１の柱頭部の上の桁３と方杖部材５の上の桁３を連結固定し、これらの桁３の前後に他の桁を連結固定してラーメン橋を完成することもできる。この場合も、方杖部材５は取り外さず、ラーメン橋の一部としてそのまま残す。 (Embodiment 2 of the ramen bridge construction method with a cane member)
In the present invention, when the upper part of the metal pipe 10 for the cane member is attached to the girder 3 in advance and the girder 3 is lifted by a crane, the metal pipe 10 for the cane member is also lifted at the same time. The lower end of the metal pipe 10 is connected and fixed to the pedestal 2 of the pier 1 and the concrete pipe 10 is disposed between the pedestal 2 and the beam 3 as shown in FIG. Then, the CFT structure cane member 5 is connected, and the girder 3 on the column head of the pier 1 and the girder 3 on the cane member 5 are connected and fixed by repeating the operation. The ramen bridge can be completed by connecting and fixing. Also in this case, the cane member 5 is not removed and left as a part of the ramen bridge.

（方杖部材付きラーメン橋施工方法の実施形態３）
実施形態１、２はいずれも、ＣＦＴ構造の方杖部材５を現場施工する方法であるが、本願発明では、ＣＦＴ構造の方杖部材５を工場及び現場ヤード内等で予め製造しておき（プレキャスト製）、それを現場においてクレーン４で吊り上げて台座２に連結固定し、その方杖部材５の上に桁３を設置固定し、その繰り返しにより橋脚１の柱頭部の上の桁３と方杖部材５の上の桁３を連結固定し、これらの桁３の前後に他の桁を連結固定してラーメン橋を完成することもできる。この場合も、方杖部材５は取り外さず、ラーメン橋の一部としてそのまま残す。 (Embodiment 3 of the ramen bridge construction method with a cane member)
Although both Embodiments 1 and 2 are methods for constructing a CFT-structured cane member 5 in the field, in the present invention, the CFT-structured cane member 5 is manufactured in advance in a factory, a site yard, or the like ( Precast), it is lifted with a crane 4 on site and fixedly connected to the pedestal 2, and a girder 3 is installed and fixed on the cane member 5, and the girder 3 and the direction above the column head of the pier 1 are repeated. It is also possible to connect and fix the girders 3 on the cane member 5 and connect and fix other girders before and after these girders 3 to complete the ramen bridge. Also in this case, the cane member 5 is not removed and left as a part of the ramen bridge.

（方杖部材付きラーメン橋施工方法の実施形態４）
実施形態１〜３では方杖部材５の下部を橋脚１の台座２に連結固定する方法であるが、橋脚に連結固定できれば台座に限らず他の連結構造とすることができ、例えば、図７のようにソケット３４へ連結固定することもできる。また、方杖部材５は桁３への連結固定と橋脚１への連結固定のどちらを先に行ってもよいが、橋脚１への連結固定を後にした方が方杖部材５の高さ誤差や長さ誤差を吸収し易くなる。 (Embodiment 4 of the ramen bridge construction method with a cane member)
In the first to third embodiments, the lower portion of the cane member 5 is connected and fixed to the pedestal 2 of the pier 1; however, if it can be connected and fixed to the pier, other connection structures can be used, for example, as shown in FIG. It is also possible to connect and fix to the socket 34 as described above. The cane member 5 may be connected or fixed to the girder 3 or connected to the pier 1 first. However, the height error of the cane member 5 is more likely to be connected and fixed to the pier 1 first. And it becomes easy to absorb the length error.

（方杖部材付きラーメン橋の実施形態１）
本願の方杖部材付きラーメン橋の実施形態を図３〜図６に基づいて説明する。これら図の橋脚１及び台座２はコンクリート製であり、台座２は橋脚１の施工時に同時に施工される。台座２は図４に示すように多数本の鉄筋６が格子状に配置され、数本のアンカーボルト７が図４（ｂ）、（ｃ）のように配置され、夫々のアンカーボルト７の下部外周に細径螺旋鉄筋８が配置され、それらの外側にコンクリート９を打設してそれらを内蔵し、アンカーボルト７の上部を台座２の上方に突出させてある。細径螺旋鉄筋８は主としてアンカーボルト７周辺のコンクリートのひび割れ等を防止するためのものである。 (Embodiment 1 of a ramen bridge with a cane member)
The embodiment of Hotsue member with rigid frame bridge of the gun will be described with reference to FIGS. 3 to 6. The pier 1 and the pedestal 2 in these figures are made of concrete, and the pedestal 2 is constructed at the same time as the construction of the pier 1. As shown in FIG. 4, the pedestal 2 has a large number of reinforcing bars 6 arranged in a lattice pattern, and several anchor bolts 7 are arranged as shown in FIGS. 4B and 4C. Small-diameter spiral reinforcing bars 8 are arranged on the outer periphery, concrete 9 is placed outside them and they are built in, and the upper part of the anchor bolt 7 is projected above the base 2. The small-diameter helical rebar 8 is mainly for preventing cracking of concrete around the anchor bolt 7.

橋脚１の上に架設する桁３には図１３に示すようにコンクリート版Ａの底面にＩ型鋼Ｂが２本平行に取り付けられている複合構造のものが使用されている。図３に示すように桁３の継ぎ目には鋼板製の継ぎ目添接材１２、鋼板製の上添接材１５、鋼板製の下添接材１７がボルトにより固定されている。継ぎ目添接材１２は縦ウエブ１１の両側面に重ねて固定され、上添接材１５は上フランジ１４の上下に重ねて、下添接材１７は下フランジ１６の上下に重ねて固定されている。前記縦ウエブ１１のうち二つの継ぎ目添接材１２の間には鋼板製の補剛材１３が縦向きにして平行に配置固定されている。この補剛材１３の下方であって下フランジ１６の下には連結台座１８が斜めに連結固定されている。連結台座１８は図５（ａ）、（ｂ）に示すように台座フランジ２３の上に一枚の横板１９が配置固定され、その横板１９の両側面に３枚の縦板２０が対向して配置固定されている。   As the girder 3 constructed on the pier 1, a composite structure in which two I-shaped steels B are attached in parallel to the bottom surface of the concrete plate A as shown in FIG. 13 is used. As shown in FIG. 3, a joint member 12 made of a steel plate, an upper joint member 15 made of a steel plate, and a lower joint member 17 made of a steel plate are fixed to the joint of the girders 3 by bolts. The joint adhering material 12 is overlapped and fixed on both side surfaces of the vertical web 11, the upper adjoining material 15 is overlapped on the upper and lower sides of the upper flange 14, and the lower additive member 17 is overlapped and fixed on the upper and lower sides of the lower flange 16. Yes. A steel plate stiffener 13 is vertically arranged and fixed in parallel between two joints 12 in the vertical web 11. Below the stiffener 13 and below the lower flange 16, a connecting base 18 is connected and fixed obliquely. As shown in FIGS. 5 (a) and 5 (b), the connecting pedestal 18 has one horizontal plate 19 disposed and fixed on the pedestal flange 23, and the three vertical plates 20 are opposed to both side surfaces of the horizontal plate 19. And the placement is fixed.

方杖部材５は図３に示すようにコンクリート製の台座２と桁３の下の連結台座１８との間に配置固定されている。方杖部材５は図６に示すように方杖部材用金属管１０内にコンクリート２１を充填したＣＦＴ構造である。方杖部材用金属管１０の上端には鋼材製の上フランジ２２が取り付けられ、方杖部材用金属管１０の下端には鋼材製の下フランジ２５が取り付けられ、方杖部材用金属管１０の下部外周と下フランジ２５が数枚のリブ２７で連結されている。この方杖部材用金属管１０の上端寄りには充填孔２８（図５ａ）が開口されており、そこから方杖部材用金属管１０内にコンクリート２１を充填してある。   As shown in FIG. 3, the cane member 5 is disposed and fixed between a concrete base 2 and a connecting base 18 below the girder 3. As shown in FIG. 6, the cane member 5 has a CFT structure in which the metal tube 10 for the cane member is filled with concrete 21. An upper flange 22 made of steel is attached to the upper end of the metal pipe 10 for the cane member, and a lower flange 25 made of steel is attached to the lower end of the metal pipe 10 for the cane member. The lower outer periphery and the lower flange 25 are connected by several ribs 27. A filling hole 28 (FIG. 5a) is opened near the upper end of the metal pipe 10 for the cane member, and the concrete 21 is filled into the metal pipe 10 for the cane member.

方杖部材５の上端と桁３との連結構造（桁側格点構造）は鋼製台座タイプであり、図５（ａ）に示すように前記方杖部材用金属管１０の上端の鋼材製の上フランジ２２を桁３の下の連結台座１８の台座フランジ２３の下に重ねてボルト２４で固定してある。方杖部材５の下端と台座２との連結構造(橋脚側格点構造)はコンクリート台座タイプであり、図６に示すように方杖部材用金属管１０の下端の金属製の下フランジ２５を、台座２の上面に突出しているアンカーボルト７にナット締めして固定してある。この場合、方杖部材用金属管１０の長さや高さに誤差があると下フランジ２５と台座２との間に隙間が発生するが、その誤差は、隙間に調整モルタル２６(図４ａ)を詰めることにより吸収することができる。   The connection structure (girder side grading structure) between the upper end of the cane member 5 and the girder 3 is a steel pedestal type, and is made of a steel material at the upper end of the metal tube 10 for the cane member as shown in FIG. The upper flange 22 is overlapped under the base flange 23 of the connecting base 18 below the girder 3 and fixed with bolts 24. The connecting structure between the lower end of the cane member 5 and the pedestal 2 (a pier side grading structure) is a concrete pedestal type. As shown in FIG. 6, a metal lower flange 25 at the lower end of the metal pipe 10 for the cane member is provided. The anchor bolt 7 protruding from the upper surface of the base 2 is fixed with nuts. In this case, if there is an error in the length or height of the metal pipe 10 for the cane member, a gap is generated between the lower flange 25 and the pedestal 2, and the error is caused by adjusting the mortar 26 (FIG. 4a) in the gap. It can be absorbed by packing.

（方杖部材付きラーメン橋の実施形態２）
本願の方杖部材付きラーメン橋の第２の実施形態を図７〜図１０に示す。これら図の方杖部材付きラーメン橋は橋脚１、桁３が実施形態１のそれらと同じであり、方杖部材５もＣＦＴ構造であることにおいて実施形態１のそれと同じである。異なるのは図７、図８に示すように桁３が斜めに接合されていること、鋼板製の補添接３２が継ぎ目に沿って斜めに配置固定されていること、縦ウエブ１１のうち二枚の補添接３２の間にＣＦＴ構造の補剛材３１が設けられていること、方杖部材５の上端と桁３との連結構造（桁側格点構造）が鋼管連続タイプ、方杖部材５の下端と台座２との連結構造(橋脚側格点構造)がソケット継ぎ手タイプであることである。 (Embodiment 2 of a ramen bridge with a cane member)
The second embodiment of Hotsue member with rigid frame bridge of the gun shown in FIGS. 7 to 10. The ramen bridge with a cane member in these figures has the same pier 1 and girder 3 as those of the first embodiment, and the same as that of the first embodiment in that the cane member 5 also has a CFT structure. 7 and 8, the difference is that the girders 3 are obliquely joined, the steel plate supplementary attachments 32 are obliquely arranged and fixed along the seam, and two of the vertical webs 11 are different. A stiffener 31 having a CFT structure is provided between the sheet attachments 32, and the connection structure (girder side grading structure) between the upper end of the cane member 5 and the girder 3 is a steel pipe continuous type, a cane The connection structure (the pier side rating structure) between the lower end of the member 5 and the pedestal 2 is a socket joint type.

方杖部材５は方杖部材用金属管３３内にその上端寄りの充填孔３８からコンクリート３９が充填されてＣＦＴ構造としてあり、方杖部材用金属管３３は上端が桁３の下フランジ１６に溶接により固定され、下端が橋脚１のソケット３４（図７）に差込まれ、方杖部材用金属管３３の外周面とソケット３４の外周面が連結治具３５で連結固定されている。   The cane member 5 has a CFT structure in which the metal tube 33 for the cane member is filled with concrete 39 from the filling hole 38 near the upper end thereof, and the metal tube 33 for the cane member has an upper end on the lower flange 16 of the girder 3. The lower end is inserted into the socket 34 (FIG. 7) of the pier 1, and the outer peripheral surface of the metal rod 33 for the cane member and the outer peripheral surface of the socket 34 are connected and fixed by the connecting jig 35.

前記ソケット３４（図７）は橋脚１の前面から前方斜め上方と、橋脚１の後面から後方斜め上方に突設されている。ソケット３４の下端には鋼材製のフランジ４０が取り付けられ、フランジ４０の後方（背面）に図１０（ａ）、（ｂ）に示すように、鋼材製の板状の連結材４１が多数枚並行に突設され、夫々の連結材４１にコンクリートが流れ込むための流入孔４２と、橋脚１の帯鉄筋を通すための帯鉄筋用貫通孔４３（図１０）が開口されている。このソケット３４はフランジ４０を橋脚１の前面又は後面に宛がって連結材４１を橋脚１内に配置し、帯鉄筋用貫通孔４３に帯鉄筋を貫通してからコンクリートを打設して橋脚１を形成すると共にそのコンクリートが連結材４１の流入孔４２、帯鉄筋用貫通孔４３内に流れ込んで、連結材４１がそのコンクリートに内蔵されてソケット３４が橋脚１と一体に固定されている。   The socket 34 (FIG. 7) protrudes obliquely forward and upward from the front surface of the pier 1 and obliquely upward and rearward from the rear surface of the pier 1. A steel flange 40 is attached to the lower end of the socket 34, and a large number of steel plate-like connecting members 41 are arranged in parallel behind the flange 40 as shown in FIGS. 10 (a) and 10 (b). The inflow hole 42 through which the concrete flows into each connecting member 41 and the through-hole 43 for the band reinforcing bar (FIG. 10) for passing the band reinforcing bar of the pier 1 are opened. In this socket 34, the flange 40 is directed to the front surface or the rear surface of the pier 1 and the connecting member 41 is arranged in the pier 1, and after passing the band rebar through the through hole 43 for the band rebar, concrete is placed and the pier is inserted. 1 and the concrete flows into the inflow hole 42 of the connecting member 41 and the through hole 43 for the reinforcing bar, the connecting member 41 is built in the concrete, and the socket 34 is fixed integrally with the pier 1.

前記ソケット３４に差し込まれた方杖部材用金属管３３の下部をソケット３４に固定するには、ソケット３４とその内側の方杖部材用金属管３３との間の隙間４５（図１０ｂ）内に付着強度向上用の鉄筋４６をリング状に内外に二重に配置し、その隙間４５にコンクリート４７を充填する。この場合、必要に応じてコンクリート４７の上に剥離防止用のケイ砂４８（図１０ｂ）を塗布する。   In order to fix the lower portion of the cane member metal pipe 33 inserted into the socket 34 to the socket 34, the gap 45 (FIG. 10b) between the socket 34 and the inner metal pipe 33 for the cane member is disposed. Reinforcing bars 46 for improving the adhesion strength are arranged in a ring shape inside and outside, and concrete 47 is filled in the gap 45. In this case, silica sand 48 for preventing peeling (FIG. 10b) is applied on the concrete 47 as necessary.

桁３の補剛材３１は図８（ｂ）に示すように縦ウエブ１１の両側にそれを挟むように二本の半割れパイプを配置固定し、半割れパイプの上端寄りに開口された充填穴３７からコンクリートを充填してＣＦＴ構造にしてある。この場合、桁３の下フランジ１６のうち、半割れパイプ取り付け位置に、半割れパイプ取り付け前に図８（ｂ）に示すように連通孔３６（図８ｂ）を多数開口しておき、充填孔３７から充填されたコンクリートがその連通孔３６を通過して下の方杖部材用金属管３３内に流れ込んで、方杖部材用金属管３３内のコンクリートと一体化するようにしてある。   As shown in FIG. 8 (b), the stiffener 31 of the girder 3 has two half cracked pipes arranged and fixed on both sides of the vertical web 11 and is opened near the upper end of the half cracked pipe. Concrete is filled from the hole 37 to form a CFT structure. In this case, a large number of communication holes 36 (FIG. 8b) are opened in the lower flange 16 of the girder 3 at the half-cracked pipe mounting position before the half-cracked pipe is mounted, as shown in FIG. The concrete filled from 37 passes through the communication hole 36 and flows into the lower metal tube 33 for the cane member, and is integrated with the concrete in the metal tube 33 for the cane member.

（本願の複合ラーメン橋における方杖部材の突出角度と取り付け位置の実験）
本願発明者らは、図１２（ｂ）に示す支間割７５ｍ＋２＠９０ｍ＋７５ｍの４径間連続鋼２主Ｉ桁複合ラーメン橋（ＣＦＴ方杖部材付き）をモデルとし、その橋脚１からの方杖部材５の突出角度を３０度、４５度の２通りとし、桁３への方杖部材５の取り付け位置を中央径間（図１２ｂ：９００００ｍｍ）との支間長比率で０．１、０．１５、０．２の３通りとし、両者の６タイプの組み合わせ（突出角度３０度と支間長比率０．１、０．１５、０．２、突出角度４５度と支間長比率０．１、０．１５、０．２の組み合わせ）について骨組み解析をした。解析結果から曲げモーメントの低減効果に着目すると、取付け角度は３０度よりも４５度の方が優れ、取付け位置は０．１５以上の支間長比率のものが優れており、４５度と０．１５以上の組み合わせタイプが有効であることが判明した。この解析結果に基づいて前記実施形態１、２では突出角度を４５度前後、取り付け位置を中央径間との支間長比率で０．１５程度とした。 (Experiments projecting angle and the mounting position of the Hotsue member in the composite rigid frame bridge of the present Application)
The inventors of the present application modeled a 4-span continuous steel 2-main I-girder composite ramen bridge (with a CFT cane member) with a span split of 75 m + 2 @ 90 m + 75 m shown in FIG. 12 (b), and a cane member from the pier 1. The projection angle of 5 is 30 degrees and 45 degrees, and the attachment position of the cane member 5 to the girder 3 is 0.1, 0.15 as the span length ratio with the center span (FIG. 12b: 90000 mm), There are three combinations of 0.2, 6 types of both (projection angle 30 degrees and span length ratio 0.1, 0.15, 0.2, projection angle 45 degrees and span length ratio 0.1, 0.15 , 0.2)). Focusing on the bending moment reduction effect from the analysis results, the mounting angle is better at 45 degrees than 30 degrees, and the mounting position is better at a span length ratio of 0.15 or more, 45 degrees and 0.15 The above combination types were found to be effective. Based on the analysis result, in the first and second embodiments, the protrusion angle is about 45 degrees, and the attachment position is about 0.15 in the ratio of the span length to the center span.

（本願の複合ラーメン橋の曲げモーメントの実験）
前記モデルの複合ラーメン橋と方杖部材付きでない一般的な複合ラーメン橋の試設計及びコスト比較を行った。試設計でのＣＦＴ方杖部材は取付け角度４５度、取付け位置０．１５とし、方杖部材は金属管８１２．８φ×１２．７（ＳＴＫ４９０）に設計基準強度４０Ｎ／ｍｍ2のコンクリートを充填する断面構成とした。また，幅員構成は図１１に示す主要幹線道路の地方部を想定した。試設計結果における主桁の曲げモーメントを図１２（ａ）、（ｂ）に示す。曲げモーメントの低減効果に着目すると、一般的な複合ラーメン橋はＰ１橋脚前面で最小値約−８００００ｋＮ・ｍであるのに対して、本願のＣＦＴ方杖部材を用いた複合ラーメン橋では方杖部材取付け点で最小値約−４００００ｋＮ・ｍであり、ＣＦＴ方杖部材を設置することにより、曲げモーメントを約半減できることが明らかとなった。 (Experiment of composite rigid frame bridge of bending moment of this Application)
Trial design and cost comparison of the composite ramen bridge of the model and a general composite ramen bridge without a cane member were performed. The CFT cane member in the trial design has an attachment angle of 45 degrees and an attachment position of 0.15, and the cane member is filled with concrete with a design standard strength of 40 N / mm 2 in a metal tube 812.8φ × 12.7 (STK490). A cross-sectional configuration was adopted. Moreover, the width structure assumed the local part of the main arterial road shown in FIG. The bending moment of the main girder in the trial design results is shown in FIGS. 12 (a) and 12 (b). Bending Focusing on the effect of reducing the moment, the general composite rigid frame bridge whereas the minimum value of about -80000kN · m at P1 piers front, a composite rigid frame bridge with CFT Hotsue member of the present Application Hotsue The minimum value of the member attachment point is about −40000 kN · m, and it has been clarified that the bending moment can be reduced to about half by installing the CFT cane member.

（本願の複合ラーメン橋のコスト低減実験）
表１に前記モデルの複合ラーメン橋と方杖部材の付いていない一般的な複合ラーメン橋の上部工の製作重量と工場製作費の比較を示す。主桁断面設計において、一般的な複合ラーメン橋は中間支点部に水平継手を有する上下２分割の断面構成（図１２ａ）であるのに対し、本願発明のＣＦＴ方杖部材付き複合ラーメン橋は主桁高を３ｍ以下の１断面で設計できる（図１２ｂ）点や高強度の鋼材料（例えばＳＭ５７０材）の使用範囲が少なくなっている点などで、工場製作費が約２割低減しており、本願発明のＣＦＴ方杖部材がコスト縮減に非常に効果があることが明らかとなった。 (Cost reduction experiments complex ramen bridge of this Application)
Table 1 shows a comparison of the manufacturing weight and factory manufacturing cost of the superstructure of the composite ramen bridge of the above model and a general composite ramen bridge without a cane member. In the main girder cross-sectional design, a general composite rigid frame bridge has a vertically divided two-section structure (FIG. 12a) having a horizontal joint at the intermediate fulcrum, whereas the composite rigid frame bridge with a CFT cane member of the present invention is mainly used. Factory manufacturing costs have been reduced by about 20% due to the fact that the girder height can be designed with one cross section of 3 m or less (Fig. 12b) and the use range of high-strength steel materials (for example, SM570 material) has been reduced. It has been clarified that the CFT cane member of the present invention is very effective for cost reduction.

Figure 0005050228
Figure 0005050228

（本願の複合ラーメン橋の地震時の動的応答解析による耐震性の実験）
レベル２−タイプIIのＩ種地盤の代表３波形を用いた時刻歴応答解析のうち、橋軸方向加震時の解析結果を表２に示す。ＣＦＴ方杖部材の影響は、本願発明のＣＦＴ方杖部材を用いた複合ラーメン橋と一般的な複合ラーメン橋の応答値を比較する限り、小さいことがわかった。また、ＣＦＴ方杖部材の発生軸力は許容軸圧縮力を満足することが確認できた。 (Experiment of earthquake resistance by dynamic response analysis at the time of the earthquake of composite rigid frame bridge of this Application)
Of the time history response analysis using three representative waveforms of Type I ground of Level 2-Type II, Table 2 shows the analysis results during the bridge axis direction earthquake. It was found that the influence of the CFT cane member is small as long as the response values of the composite ramen bridge using the CFT cane member of the present invention are compared with those of a general composite ramen bridge. Further, it was confirmed that the generated axial force of the CFT cane member satisfies the allowable axial compression force.

Figure 0005050228
Figure 0005050228

本願発明の方杖部材付きラーメン橋施工方法の説明図。Explanatory drawing of the ramen bridge construction method with a cane member of this invention. （ａ）〜（ｄ）は本願発明の方杖部材付きラーメン橋施工方法の工程別説明図。(A)-(d) is explanatory drawing according to process of the ramen bridge construction method with a cane member of this invention. 本願の方杖部材付きラーメン橋の方杖部材の取付け説明図。Mounting illustration of Hotsue member with rigid frame bridge Hotsue member of the gun. （ａ）は本願発明における方杖部材の台座への取付け説明図、（ｂ）はフランジが角板の場合の（ａ）のＸ−Ｘ矢視図、（ｃ）はフランジが丸板の場合の（ａ）のＸ−Ｘ矢視図。(A) is explanatory drawing of attachment to the base of the cane member in this invention, (b) is a XX arrow view of (a) when a flange is a square plate, (c) is a case where a flange is a round plate (A) XX arrow directional view. （ａ）は本願の方杖部材付きラーメン橋の桁と方杖部材の取付け説明図、（ｂ）は（ａ）のＸ−Ｘ矢視図。(A) mounting illustration of Hotsue member with rigid frame bridge girder and Hotsue member of this Application, (b) the X-X arrow view of the (a). 本願の方杖部材付きラーメン橋の台座への方杖部材の取付け説明図。Mounting illustration of Hotsue member to Hotsue member with rigid frame bridge pedestal of the gun. 本願の方杖部材付きラーメン橋の方杖部材の他の取付け説明図。Other mounting illustration of Hotsue member with rigid frame bridge Hotsue member of the gun. （ａ）は本願の方杖部材付きラーメン橋の桁と方杖部材の他の取付け説明図、（ｂ）は（ａ）のＸ−Ｘ矢視図。(A) Other mounting illustration of Hotsue member with rigid frame bridge girder and Hotsue member of this Application, (b) the X-X arrow view of the (a). 本願の方杖部材付きラーメン橋の台座への方杖部材の他の取付け説明図。Other mounting illustration of Hotsue member to Hotsue member with rigid frame bridge pedestal of the gun. （ａ）は本願の方杖部材付きラーメン橋の台座への方杖部材の他の取付け例の側面説明図、（ｂ）は（ａ）の平面図。(A) is a side view of another mounting example of Hotsue member to Hotsue member with rigid frame bridge holder according to the present patent application, a plan view of (b) is (a). 既存の主要幹線道路の幅員構成図。Width diagram of existing main highways. （ａ）は一般的な複合ラーメン橋の曲げモーメント説明図、（ｂ）は本願の方杖部材付きラーメン橋の曲げモーメント説明図、（ｃ）は（ａ）のＯ部拡大図。(A) the bending moment diagram of a typical composite rigid frame bridge, (b) the bending moment diagram of Hotsue member with rigid frame bridge of the present Application, O enlarged view of portion (c) is (a). 一般的な複合ラーメン橋の説明図。Illustration of a general composite ramen bridge.

１ 橋脚
２ 台座
３ 桁
４ クレーン
５ 方杖部材
６ 鉄筋
７ アンカーボルト
８ 細径螺旋鉄筋
９ コンクリート
１０ 方杖部材用金属管
１１ 縦ウエブ
１２ 継ぎ目添接材
１３ 補剛材
１４ 上フランジ
１５ 上添接材
１６ 下フランジ
１７ 下添接材
１８ 連結台座
１９ 横板
２０ 縦板
２１ コンクリート
２２ 上フランジ
２３ 台座フランジ
２４ ボルト
２５ 下フランジ
２６ 調整モルタル
２７ リブ
２８ 充填孔
３１ 補剛材
３２ 添接材
３３ 方杖部材用金属管
３４ ソケット
３５ 連結治具
３６ 連通孔
３７ 充填孔
３８ 充填孔
３９ コンクリート
４０ フランジ
４１ 連結材
４２ 流入孔
４３ 帯鉄筋用貫通孔
４５ 隙間
４６ 付着強度向上用の鉄筋
４７ コンクリート
４８ ケイ砂
DESCRIPTION OF SYMBOLS 1 Pier 2 Pedestal 3 Girder 4 Crane 5 Cane member 6 Reinforcement 7 Anchor bolt 8 Small spiral reinforcement 9 Concrete 10 Metal pipe 11 for cane member Vertical web 12 Seam joint material 13 Stiffener 14 Upper flange 15 Upper joint Material 16 Lower flange 17 Lower attachment material 18 Connection base 19 Horizontal plate 20 Vertical plate 21 Concrete 22 Upper flange 23 Base flange 24 Bolt 25 Lower flange 26 Adjustment mortar 27 Rib 28 Filling hole 31 Stiffening material 32 Attachment material 33 Cane Metal pipe for member 34 Socket 35 Connecting jig 36 Communication hole 37 Filling hole 38 Filling hole 39 Concrete 40 Flange 41 Connecting material 42 Inflow hole 43 Reinforcing bar through hole 45 Gap 46 Reinforcing bar 47 Adhesive strength improving concrete 48 Silica sand

Claims (6)

橋脚上に桁を設置固定し、その桁の前後に他の桁を連結して連続架設するラーメン橋施工方法において、
前記橋脚の橋軸方向における前面及び後面に、橋脚と桁の間に配置される方杖部材を設置するための台座又はソケットを形成し、
前記方杖部材の下端部を前記台座又はソケットに剛結して、方杖部材を前記橋脚に固定し、
前記方杖部材の上に設置した桁を当該方杖部材に固定し、その桁とその前後の桁を連結して連続架設し、
ラーメン橋完成後も前記方杖部材を取り外すことなくラーメン橋の一部材として残すことを特徴とする方杖部材付きラーメン橋施工方法。 In the ramen bridge construction method in which a girder is installed and fixed on the pier, and another girder is connected before and after that girder to continuously build it.
A pedestal or socket for installing a cane member disposed between the pier and the girder is formed on the front surface and the rear surface in the bridge axis direction of the pier,
The lower end portion of the cane member is rigidly connected to the pedestal or socket, and the cane member is fixed to the pier,
The girder installed on the cane member is fixed to the cane member, and the girder and the girder before and after it are connected continuously.
A ramen bridge construction method with a cane member, which is left as a member of a ramen bridge without removing the cane member even after completion of the ramen bridge. 請求項１記載の方杖部材付きラーメン橋施工方法において、
桁の下部に固定された連結台座に、方杖部材の上端部を剛結することで、桁を方杖部材の上に固定することを特徴とする方杖部材付きラーメン橋施工方法。 In the ramen bridge construction method with a cane member according to claim 1,
A method for constructing a ramen bridge with a cane member, wherein the upper end of the cane member is rigidly connected to a connecting base fixed to the lower part of the girder, thereby fixing the girder on the cane member. 請求項１又は請求項２記載の方杖部材付きラーメン橋施工方法において、
方杖部材用の中空の金属管を橋脚と桁の間に設置した後に、その方杖部材用金属管内にコンクリートを充填してコンクリート充填管構造の方杖部材を形成することを特徴とする方杖部材付きラーメン橋施工方法。 In the ramen bridge construction method with a cane member according to claim 1 or 2,
A method in which a hollow metal tube for a cane member is installed between a bridge pier and a girder, and then a concrete member is formed by filling concrete into the metal tube for the cane member. A ramen bridge construction method with a cane member. 請求項１又は請求項２記載の方杖部材付きラーメン橋施工方法において、
コンクリート充填管構造の方杖部材の上部が連結固定された桁を吊り上げ、その方杖部材の下部を橋脚に剛結することを特徴とする方杖部材付きラーメン橋施工方法。 In the ramen bridge construction method with a cane member according to claim 1 or 2,
A method for constructing a ramen bridge with a cane member, wherein a girder in which the upper part of a cane member of a concrete-filled tube structure is connected and fixed is lifted, and the lower part of the cane member is rigidly connected to a bridge pier. 請求項１又は請求項２記載の方杖部材付きラーメン橋施工方法において、
方杖部材用の中空の金属管の上部が連結された桁を吊り上げ、その方杖部材用金属管の下部を橋脚に剛結してから、方杖部材用金属管内にコンクリートを充填して方杖部材を形成することを特徴とする方杖部材付きラーメン橋施工方法。 In the ramen bridge construction method with a cane member according to claim 1 or 2,
Lift the girder with the upper part of the hollow metal tube for the cane member connected, rigidly connect the lower part of the metal tube for the cane member to the bridge pier, and then fill the metal tube for the cane member with concrete A ramen bridge construction method with a cane member, characterized in that a cane member is formed. 請求項１乃至請求項５記載の方杖部材付きラーメン橋施工方法において、
桁のウエブ両面に、それぞれ半割れの中空金属管を固定するとともに、その金属管内にコンクリートを充填して、
桁のウエブに、コンクリート充填管構造の補剛材を形成することを特徴とする方杖部材付きラーメン橋施工方法。 In the ramen bridge construction method with a cane member according to any one of claims 1 to 5,
While fixing the half-broken hollow metal tube on both sides of the web of the girder, filling the metal tube with concrete,
A method for constructing a ramen bridge with a cane member, characterized in that a stiffener with a concrete-filled pipe structure is formed on a web of girders.
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