JP2001254317A - Structure for fixing hanging member to bridge girder material in hanging type bridge - Google Patents
Structure for fixing hanging member to bridge girder material in hanging type bridgeInfo
- Publication number
- JP2001254317A JP2001254317A JP2000069716A JP2000069716A JP2001254317A JP 2001254317 A JP2001254317 A JP 2001254317A JP 2000069716 A JP2000069716 A JP 2000069716A JP 2000069716 A JP2000069716 A JP 2000069716A JP 2001254317 A JP2001254317 A JP 2001254317A
- Authority
- JP
- Japan
- Prior art keywords
- bridge
- sheath tube
- fixing
- girder
- steel pipe
- 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】本発明は、吊形式橋梁におけ
る吊材の橋桁材への定着構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension structure for a suspension type bridge in a suspension type bridge.
【０００２】[0002]
【従来の技術】従来から知られている斜張橋１に鋼管主
桁を適用した場合、基本的には、図４（ａ）、（ｂ）に
示すように、一対の支柱２ａ、２ｂを有する複数の支持
塔２と、図５に示すように横桁３と床材４と上下に貫通
斜孔５ｏを有する鋼管桁５で形成した橋桁ユニット６を
多数連結してなる橋桁７と、橋桁ユニット６の両側部と
支持塔２の一対の支柱２ａ、２ｂ間に張設された吊材
（斜材）８とから構成される。2. Description of the Related Art When a steel pipe main girder is applied to a cable stayed bridge 1 conventionally known, basically, as shown in FIGS. 4 (a) and 4 (b), a pair of columns 2a and 2b are formed. A plurality of support towers 2, a bridge girder 7 formed by connecting a number of bridge girder units 6 each formed of a horizontal girder 3, a floor material 4, and a steel pipe girder 5 having an oblique through hole 5 o as shown in FIG. It is composed of both sides of the unit 6 and a suspension member (diagonal member) 8 stretched between a pair of columns 2a and 2b of the support tower 2.
【０００３】吊材８の橋桁ユニット６への定着構造とし
ては、例えば、図６（ａ）に示すように、斜張橋１の橋
桁ユニット６のガーダー材である鋼管５に貫通斜孔５ｏ
を設け、この鋼管５の上下の貫通斜孔５ｏに、下端部に
支圧材９を固着した鞘管１０を挿通し、この鞘管を、鋼
管５部位の補強手段でもあるダイヤフラム１１を介して
鋼管５に固定し、鞘管１０に吊材８を挿入・貫通させ、
その突出端に鞘管１０の支圧材９に係止するソケット１
２を取り付け、鞘管１０から橋桁ユニット６への力をダ
イヤフラム１１を介して伝達するものである。しかし、
この定着構造においては、ダイヤフラム１１に図６
（ｂ）に示すような孔１１ｏの加工や、狭隘な鋼管５内
での鋼管５内面とダイヤフラム１１の溶接が必要であり
施工性に問題がある。[0003] As a fixing structure of the suspension member 8 to the bridge girder unit 6, for example, as shown in FIG. 6 (a), a steel pipe 5 which is a girder material of the bridge girder unit 6 of the cable stayed bridge 1 has a through-slanted hole 5 o.
And a sheath tube 10 having a supporting member 9 fixed to the lower end thereof is inserted into the upper and lower oblique holes 5o of the steel tube 5, and the sheath tube is passed through a diaphragm 11 which is also a reinforcing means of the steel tube 5 portion. It is fixed to the steel pipe 5, and the hanging material 8 is inserted and penetrated into the sheath pipe 10,
A socket 1 that locks to the supporting member 9 of the sheath tube 10 at its protruding end.
2 is attached, and the force from the sheath tube 10 to the bridge girder unit 6 is transmitted through the diaphragm 11. But,
In this fixing structure, the diaphragm 11 is
Processing of the hole 11o as shown in (b) and welding of the diaphragm 11 to the inner surface of the steel pipe 5 in the narrow steel pipe 5 are necessary, and there is a problem in workability.
【０００４】また、他の定着構造としては、図７に示す
ように、斜張橋１の橋桁ユニット６の桁材である鋼管５
の上部にピン定着金具１４ａを溶接により固定し、この
ピン定着金具１４ａと吊材８の下端部のピン固定式ソケ
ット１４ｂとをピン１５を介して連結し、吊材８から橋
桁ユニット６への力をピン１５を介して伝達するもので
ある。As another anchoring structure, as shown in FIG. 7, a steel pipe 5 which is a girder material of a bridge girder unit 6 of a cable stayed bridge 1 is used.
A pin fixing bracket 14a is fixed to the upper part of the bracket by welding, and the pin fixing bracket 14a is connected to a pin fixing socket 14b at the lower end of the suspension member 8 via a pin 15. The force is transmitted via the pin 15.
【０００５】しかし、この定着構造においては、ピン定
着金具１４ａを固定する鋼管５部位の補強手段として、
狭隘な鋼管５内部にダイヤフラム１１を溶接する必要が
あり、加工性に問題があることに加え、ピン定着金具１
４ａが橋桁ユニット６の路面から見えることになり、美
観上好ましくないことが多い。また、吊材８の長さ調整
は支持塔２側で行う必要があり、その作業負担が大き
い。However, in this fixing structure, as means for reinforcing the five portions of the steel pipe for fixing the pin fixing metal 14a,
It is necessary to weld the diaphragm 11 to the inside of the narrow steel pipe 5, and there is a problem in workability.
4a can be seen from the road surface of the bridge girder unit 6, which is often not desirable for aesthetic purposes. Further, it is necessary to adjust the length of the suspension member 8 on the support tower 2 side, and the work load is large.
【０００６】他の定着構造としては、図８（ａ）、
（ｂ）に示すように、斜張橋１の橋桁ユニット６の桁材
である鋼管５の貫通斜孔５ｏの下部周辺に、吊材８から
の反力を橋桁ユニット６に伝える定着桁１６を固定し、
定着桁１６に貫通斜孔５ｏに挿入した鞘管１０の支圧材
９を係止し、鞘管１０に挿入した吊材８の先端にソケッ
ト１２を取り付けて支圧材９に係止する定着構造があ
る。この定着構造においては、鞘管１０から橋桁ユニッ
ト６への力を定着桁１６を介して伝達するものである。
しかし、定着桁１６は鋼管５の周面に密着させた複雑な
形状となり、鋼構造の場合では加工作業負担が大きい
し、ＲＣ構造の場合では現場打設が困難であるなど施工
性の問題もある。FIG. 8A shows another fixing structure.
As shown in (b), a fixing girder 16 for transmitting a reaction force from the suspension member 8 to the bridge girder unit 6 is provided around a lower part of the through-hole 5o of the steel pipe 5 which is a girder material of the bridge girder unit 6 of the cable stayed bridge 1. Fixed,
The fixing member 16 is fixed to the supporting member 9 of the sheath tube 10 inserted into the oblique through hole 5 o, and the socket 12 is attached to the tip of the suspension member 8 inserted to the sheath tube 10 to be fixed to the supporting member 9. There is a structure. In this fixing structure, the force from the sheath tube 10 to the bridge girder unit 6 is transmitted through the fixing girder 16.
However, the fixing girder 16 has a complicated shape in close contact with the peripheral surface of the steel pipe 5, and the work load is large in the case of a steel structure, and there is also a problem of workability such as difficulty in casting on site in the case of the RC structure. is there.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、上記従来例
のような狭隘な鋼管内部でのダイヤフラムの溶接を必要
としない簡易構造で、安定した力の伝達を可能とし、美
観上も問題のない吊形式橋梁の吊材の橋桁材への定着構
造を提供するものである。DISCLOSURE OF THE INVENTION The present invention has a simple structure which does not require welding of a diaphragm inside a narrow steel pipe as in the above-mentioned conventional example, enables stable transmission of force, and has an aesthetic problem. The purpose of the present invention is to provide an anchoring structure of a suspension type bridge to a bridge girder material.
【０００８】[0008]
【課題を解決するための手段】本発明は、以下の（１）
〜（４）の発明により構成されるものである。 （１）．吊形式橋梁の鋼管桁材に孔を設け、その孔に、
外周に突起を有し下端部に支圧材を固着した鞘管を挿通
し、この鞘管に吊材（斜材またはハンガーロープ）を挿
入・貫通させ、その突出端に鞘管の支圧材に係止するソ
ケットを取り付け、鋼管内にコンクリートを充填・固化
させたことを特徴とする吊形式橋梁における吊材の橋桁
材への定着構造。 （２）．（１）において、鞘管の上端が鋼管の外周面か
ら突出していないことを特徴とする吊形式橋梁における
吊材の橋桁材への定着構造。 （３）．（１）または（２）において、鋼管内で充填・
固化させたコンクリートの少なくとも鞘管の外周を囲む
部位に鉄筋が配筋されていることを特徴とする吊形式橋
梁における吊材の橋桁材への定着構造。 （４）．（１）〜（３）のいずれかにおいて、鞘管内に
充填材を充填・固化させたことを特徴とする吊形式橋梁
における吊材の橋桁材への定着構造。The present invention provides the following (1).
To (4). (1). A hole is made in the steel pipe girder material of the suspension type bridge, and in the hole,
A sheath tube having a protrusion on the outer circumference and having a supporting material fixed to the lower end is inserted, and a suspending material (oblique material or hanger rope) is inserted and penetrated into the sheath tube. An anchoring structure for a suspension girder in a suspension type bridge, characterized in that a socket for locking is attached to the steel pipe and concrete is filled and solidified in a steel pipe. (2). (1) The fixing structure of the suspension member to the bridge girder material in the suspension type bridge, wherein the upper end of the sheath tube does not protrude from the outer peripheral surface of the steel tube. (3). In (1) or (2), filling in steel pipe
A structure for anchoring suspension members to a bridge girder member in a suspension type bridge, wherein a reinforcing bar is arranged at least in a portion surrounding the outer periphery of the sheath tube of the solidified concrete. (4). In any one of (1) to (3), a filler is fixed to a bridge girder in a suspension type bridge, wherein a filler is filled and solidified in a sheath tube.
【０００９】[0009]
【発明の実施の形態】本発明の吊材の橋桁への定着構造
は、例えば、斜張橋の主桁を、従来のプレートガーダー
に代えて局部座屈しにくく、圧縮耐力が大きいコンクリ
ート充填鋼管を用いた合成桁として、コンクリート充填
鋼管に鞘管を介して吊材を定着するものである。BEST MODE FOR CARRYING OUT THE INVENTION The anchoring structure of a suspension member to a bridge girder according to the present invention is, for example, a concrete-filled steel pipe having a large compressive strength, which is hardly locally buckled, instead of a conventional plate girder for a main girder of a cable-stayed bridge. As a composite girder used, a suspension member is fixed to a concrete-filled steel pipe via a sheath pipe.
【００１０】より具体的には、鋼管桁に、外周に突起を
有し下端部に支圧材を固着した鞘管を挿通して鞘管に吊
材を挿入・貫通させ、その突出端に固定したソケットを
鞘管の支圧材に係止して、鋼管内にコンクリートを充填
・固化させて鞘管と鋼管を固定した定着構造であり、吊
材に作用する張力は、ソケットから支圧材を介して鞘管
の端部に伝達され、さらに、鞘管の外周の突起と鋼管に
充填されたコンクリートの間に作用する剪断抵抗力によ
って、鞘管の端部に作用する吊材からの力を橋桁に伝達
する構造にしている。More specifically, a steel pipe girder is inserted through a sheath tube having a projection on the outer periphery and having a supporting material fixed to a lower end portion, and a suspension member is inserted and penetrated into the sheath tube, and fixed to the protruding end thereof. The fixed socket is fixed to the supporting material of the sheath tube, concrete is filled and solidified in the steel tube to fix the sheath tube and the steel tube, and the tension acting on the suspension material is applied from the socket to the supporting material. Is transmitted to the end of the sheath tube through the outer wall, and further, the force from the suspending material acting on the end of the sheath tube due to the shear resistance acting between the projections on the outer periphery of the sheath tube and the concrete filled in the steel tube. Is transmitted to the bridge girder.
【００１１】この定着構造は、鋼管内部に、外周部に突
起を有する鞘管を挿入してコンクリートを充填・固化さ
せて固定するので、鋼管に鞘管を固定するダイヤフラム
あるいは鋼管補強のためのダイヤフラムを鋼管内部に溶
接する必要がなく、簡便な作業のみによりコンパクトで
最小の部材構成によって実現できることを特徴とする。In this fixing structure, a sheath tube having a projection on an outer peripheral portion is inserted into a steel tube and concrete is filled and solidified and fixed. Therefore, a diaphragm for fixing the sheath tube to the steel tube or a diaphragm for reinforcing the steel tube. Is not required to be welded to the inside of the steel pipe, and can be realized by a compact and minimum member configuration only by a simple operation.
【００１２】また、鋼管内で充填・固化させたコンクリ
ートの少なくとも鞘管の外周を囲む部位に鉄筋を配筋し
てコンクリートの強度を向上させ、鞘管の外周突起との
結合力を強化することが有効である。さらに、鞘管内に
充填材を充填・固化させて、充填鋼管主桁の断面減少を
最小限に押さえるとともに、鞘管内部への水等の侵入を
防止して定着部の各材の腐食を防止して定着部の寿命を
延長させることも有効である。In addition, reinforcing steel is arranged at least in a portion surrounding the outer periphery of the sheath tube of the concrete filled and solidified in the steel tube, thereby improving the strength of the concrete and strengthening the bonding force with the outer peripheral projection of the sheath tube. Is valid. In addition, by filling and solidifying the filler inside the sheath pipe, the cross-sectional reduction of the main girder of the filled steel pipe is minimized, and the penetration of water etc. into the inside of the sheath pipe is prevented, and the corrosion of each material at the fixing part is prevented. It is also effective to extend the service life of the fixing unit.
【００１３】なお、上記で橋桁に固着する鋼管や鞘管
は、円形鋼管でもよいし、角形鋼管のいずれでもよく、
充填材を充填するために両端開口部を容易に閉鎖可能な
ものとする。The steel pipe or sheath pipe fixed to the bridge girder may be a circular steel pipe or a square steel pipe.
Both ends of the opening can be easily closed to fill the filler.
【００１４】本発明では、橋桁を形成する鋼管内にコン
クリートを介して鞘管を固定し、鞘管の支圧材にソケッ
トを介して吊材を係止するようにした吊材の橋桁材への
定着構造であって、基本的な力の伝達経路は、以下のよ
うになる。吊材張力→支圧材の圧縮→鞘管の圧縮
→鞘管外周面と周辺の充填コンクリートとの付着→
周辺コンクリートから橋桁全体への作用力の伝播→主
桁に対する吊材軸方向力の作用According to the present invention, the bridge girder is formed by fixing the sheath tube through concrete in the steel pipe forming the bridge girder, and locking the suspension member via the socket to the supporting material of the sheath tube. The basic force transmission path is as follows. Suspension material tension → Compression of bearing material → Compression of sheath tube → Adhesion of sheath tube outer peripheral surface and surrounding concrete →
Propagation of the acting force from the surrounding concrete to the entire bridge girder → The effect of the axial force on the main girder
【００１５】ここで、鞘管外周面と周辺の充填コンク
リートとの付着力を鞘管外周の突起によって強化する場
合の極限付着応力度ｆba（MPa ）は、例えば、ＡＰＩ
（American Petoroleum Institute ）基準に準じて求め
ることができる。 ｆba＝０．２４８＋０．９×ｆg ×ｈ／ｓ （１） ここで、 ｆg ：コンクリートの一軸圧縮強度（MPa ） ｈ：突起の高さ（mm） ｓ：突起の間隔（mm） よって、極限定着張力Ｐa（Ｎ）は、 Ｐa＝π・Ｄ・ｆba・Ｌ （２） ここで、 Ｄ：鞘管の直径 Ｌ：鞘管の埋め込み長さ（mm）Here, the ultimate adhesive stress degree f ba (MPa) when the adhesive force between the outer peripheral surface of the sheath tube and the surrounding concrete is strengthened by the projections on the outer periphery of the sheath tube is, for example, API.
(American Petoroleum Institute) standards. f ba = 0.248 + 0.9 × f g × h / s (1) where, f g : uniaxial compressive strength of concrete (MPa) h: height of protrusion (mm) s: interval of protrusion (mm) , ultimate fixing tension P a (N) is a P a = π · D · f ba · L (2) where, D: diameter of the sheath pipe L: the sheath tube embedded length (mm)
【００１６】本発明の定着構造においては、上記の
（１）および（２）式を用い、吊材の作用張力に応じ
て、コンクリートと鞘管との間で十分な剪断抵抗を得る
ように鞘管に所要の突起を形成するものである。鞘管の
外周に形成する突起（シアキー）としては、鞘管の軸方
向の荷重に対して剪断抵抗機能が顕著な形状、基本的に
は、独立したリング状突起や螺旋状の突起が有効であ
る。In the fixing structure of the present invention, the above-mentioned formulas (1) and (2) are used to obtain a sufficient shear resistance between the concrete and the sheath tube according to the working tension of the hanging material. The required projections are formed on the tube. As the projection (shear key) formed on the outer periphery of the sheath tube, a shape having a remarkable shear resistance function against the axial load of the sheath tube, basically an independent ring-shaped projection or a spiral projection is effective. is there.
【００１７】[0017]
【実施例】以下に本発明の実施例を、図１〜図３に基づ
いて説明する。ここでは、前記図４で示したような斜張
橋１において、支持塔２から張設された吊材８の橋桁７
への定着構造例を示す。ここでいう橋桁７とは、より具
体的には、図１（ａ）に示すように、横桁３の両端に、
ガーダー材としてコンクリート１３を充填する鋼管５を
固定し、横桁３の上面と鋼管５の上面に床板４を固定し
た充填鋼管合成桁である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Here, in the cable-stayed bridge 1 as shown in FIG. 4, the bridge girder 7 of the suspension member 8 stretched from the support tower 2.
2 shows an example of a fixing structure to the image forming apparatus. More specifically, the bridge girder 7 referred to here is, as shown in FIG.
This is a composite steel pipe girder in which a steel pipe 5 filled with concrete 13 as a girder material is fixed, and a floor plate 4 is fixed to the upper surface of the cross beam 3 and the upper surface of the steel pipe 5.
【００１８】また、吊材８は支持塔２の一対の支柱２
ａ、２ｂの上部と橋桁ユニット６の両側に複数箇所で張
設されるものであり、橋長方向では角度α（通常２０〜
９０度）傾斜した状態で橋桁ユニット６に定着されるも
のである。ここでは、角度α３０度で張設される吊材８
一本を選択し、この吊材８と橋桁ユニット６の形成材で
ある鋼管５との定着構造例で代表説明する。The hanging member 8 is a pair of support columns 2 of the support tower 2.
a, 2b and at both sides of the bridge girder unit 6 at a plurality of locations, and in the bridge length direction, an angle α (normally 20 to
(90 degrees) is fixed to the bridge girder unit 6 in an inclined state. Here, the hanging material 8 stretched at an angle α30 degrees
One is selected, and a representative description will be given of an example of a fixing structure example of the hanging member 8 and the steel pipe 5 which is a forming material of the bridge girder unit 6.
【００１９】この定着構造は、基本的には、図１（ｂ）
に示すように、床材４に吊材８の取付孔４ｏを設けると
ともに、鋼管５に上下に貫通する斜孔５ｏを設け、この
貫通傾斜孔５ｏに挿入した下端に支圧材９を取り付けた
鞘管１０ａを、鋼管５内に充填・固化させたコンクリー
ト１３により固定し、この鞘管１０ａ内に吊材８を挿入
し先端部を鞘管１０ａの下端から突出させてソケット１
２を取り付け、このソケット１２を鞘管１０ａの支圧材
９に係止するようにしたものである。This fixing structure is basically similar to that shown in FIG.
As shown in the figure, a floor material 4 is provided with a mounting hole 4o for a hanging material 8 and a steel pipe 5 is provided with a slant hole 5o penetrating vertically, and a supporting member 9 is mounted on a lower end inserted into the slant hole 5o. The sheath tube 10a is fixed by concrete 13 which is filled and solidified in the steel tube 5, the hanging material 8 is inserted into the sheath tube 10a, and the tip end protrudes from the lower end of the sheath tube 10a.
2, the socket 12 is locked to the supporting member 9 of the sheath tube 10a.
【００２０】この定着構造と施工手順を、図１（ｂ）を
拡大した図２に基づいて詳細に説明する。吊材８を挿入
する鞘管１０ａは、鋼管５内に充填され固化したコンク
リート１３に埋没する領域の外周に複数条のリング状の
突起１７を形成したものであり、各突起１７がコンクリ
ート１３に係止されることによって、吊材８に作用する
張力を、ソケット１２から支圧材９を介して鞘管１０ａ
の端部に伝達し、さらに、鞘管１０ａの外周の突起１７
と、鋼管５に充填され固化したコンクリート１３の間に
作用する剪断抵抗力によって、鞘管１０ａの端部に作用
する吊材８からの力を橋桁ユニット６に伝達する構造に
している。The fixing structure and the construction procedure will be described in detail with reference to FIG. 2 which is an enlarged view of FIG. The sheath tube 10a into which the suspending material 8 is inserted is formed by forming a plurality of ring-shaped projections 17 on the outer periphery of a region buried in the concrete 13 filled in the steel pipe 5 and solidified. By being locked, the tension acting on the suspending member 8 is changed from the socket 12 via the supporting member 9 to the sheath tube 10a.
Of the outer periphery of the sheath tube 10a.
And the shear resistance acting between the concrete 13 filled and solidified in the steel pipe 5 to transmit the force from the suspending member 8 acting on the end of the sheath tube 10a to the bridge girder unit 6.
【００２１】この実施例では、鞘管１０ａの上部端は斜
めに形成されており、鋼管５の外周面から突出させない
ようにし、鋼管５の上部の貫通斜孔５ｏを、図２に示す
ような遮水性のある伸縮性カバー１８1 で遮蔽して、こ
のカバー材１８1 に設けた吊材挿入孔１８ｏに、挿入し
た吊材８の外周を密着させており、橋桁上部での美観低
下を回避するとともに、内部への水の侵入を防止して定
着部の各材の腐食を防止し、定着部の寿命を延長させる
ことができる。In this embodiment, the upper end of the sheath tube 10a is formed obliquely so that it does not protrude from the outer peripheral surface of the steel tube 5, and the oblique through hole 5o in the upper portion of the steel tube 5 is formed as shown in FIG. The outer periphery of the inserted suspension member 8 is closely adhered to the suspension member insertion hole 18o provided in the cover member 181, which is shielded by a water-proof elastic cover 181. In addition, it is possible to prevent water from entering the inside, thereby preventing corrosion of each member of the fixing unit, and prolong the life of the fixing unit.
【００２２】また、鋼管５内に充填され・固化したコン
クリート１３の少なくとも鞘管１０ａの外周を囲む部位
に、鞘管１０ａの軸方向および図３に示すように周方向
に縦筋１９と補強筋２０からなる鉄筋２１を配筋してコ
ンクリート１３の強度を向上させ、鞘管１０ａ外周の突
起１７との結合力を強化して剪断抵抗力を大きくしてい
る。Further, at least a portion of the concrete 13 filled and solidified in the steel pipe 5 and surrounding the outer circumference of the sheath pipe 10a, a longitudinal bar 19 and a reinforcing bar are provided in the axial direction of the sheath pipe 10a and in the circumferential direction as shown in FIG. Reinforcing bars 21 made of steel 20 are arranged to improve the strength of the concrete 13, and strengthen the bonding force with the projections 17 on the outer periphery of the sheath tube 10 a to increase the shear resistance.
【００２３】さらに、鞘管１０ａ内に充填材（ここでは
モルタル）２２を充填して・固化させ、充填鋼管主桁の
断面減少を最小限に押さえるとともに、鞘管１０ａ内部
への水等の侵入を防止して定着部の各材の腐食を防止し
て定着部の寿命を延長させることができる。鞘管１０ａ
の外周の突起１７は、ここでは、鞘管１０ａの軸方向の
荷重に対して剪断抵抗機能を発揮するためのリング状ま
たは螺旋状の突起である。Further, a filler (here, mortar) 22 is filled and solidified in the sheath tube 10a to minimize the cross-sectional decrease of the main girder of the filled steel tube, and water and the like enter the inside of the sheath tube 10a. To prevent corrosion of each member of the fixing section, thereby extending the life of the fixing section. Sheath tube 10a
Here, the projection 17 on the outer periphery is a ring-shaped or spiral-shaped projection for exerting a shear resistance function against an axial load of the sheath tube 10a.
【００２４】本発明は、上記の実施例の内容に限定され
るものではない。例えば、この実施例では、橋桁ユニッ
ト６のガーダー材として（円形）鋼管５を用いたが、角
形鋼管であっても同様に構成して、同様の効果を得るこ
とができる。また、鞘管１０ａに充填材としてモルタル
２２を充填したが、コンクリート、樹脂やその他の硬化
性充填材を充填してもよいし、これらの充填材の充填は
不可欠ではない。また、鋼管５内の鞘管１０ａを囲むよ
うに鉄筋２１を配筋したが、これも不可欠ではない。The present invention is not limited to the contents of the above embodiment. For example, in this embodiment, the (circular) steel pipe 5 is used as the girder material of the bridge girder unit 6, but a rectangular steel pipe can be similarly configured to obtain the same effect. In addition, although the mortar 22 is filled as the filler in the sheath tube 10a, concrete, resin, or other curable filler may be filled, and the filling of these fillers is not essential. Further, the reinforcing bar 21 is arranged so as to surround the sheath tube 10a in the steel tube 5, but this is not essential.
【００２５】これらの条件および、その他の条件、例え
ば鞘管１０ａの突起１７の形成条件等を含む各条件は、
斜張橋１の規模、構造、吊材８およびその配置条件、吊
材８や橋桁７に作用する荷重条件等に応じて、上記の各
請求項を満足する範囲内で変更のあるものである。な
お、実施例においては吊材のソケットが鋼管桁の下側に
貫通しているが、定着反力の大きさによっては鋼管桁の
内部に収めることも可能である。These conditions and other conditions, such as the conditions for forming the projections 17 of the sheath tube 10a, and the like, are as follows:
Depending on the scale and structure of the cable-stayed bridge 1, the suspension members 8 and their arrangement conditions, the load conditions acting on the suspension members 8 and the bridge girder 7, etc., there is a change within a range satisfying the above claims. . In the embodiment, the socket of the suspension material penetrates the lower side of the steel pipe girder, but it can be accommodated in the steel pipe girder depending on the magnitude of the fixing reaction force.
【００２６】[0026]
【発明の効果】本発明の定着構造は、鋼管内にコンクリ
ートを充填・固化させて鞘管と鋼管を固定した定着構造
であり、狭隘な鋼管内部でのダイヤフラムの溶接を必要
としない簡易構造で、安定した力の伝達を可能とし、美
観上も問題のない吊形式橋梁の橋桁と吊材との定着の実
現が可能である。本発明の定着構造においては、鞘管の
外周に形成した突起とコンクリートとの結合作用によ
り、吊材に作用する張力を、ソケットから支圧材を介し
て鞘管の端部に伝達し、さらに、鞘管の外周の突起と鋼
管に充填されたコンクリートの間に作用する剪断抵抗力
によって、鞘管の端部に作用する吊材からの力を橋桁に
伝達する構造であるため、橋桁と吊材を安定かつ強固に
定着することができる。The fixing structure according to the present invention is a fixing structure in which concrete is filled and solidified in a steel pipe to fix the sheath pipe and the steel pipe, and is a simple structure that does not require welding of a diaphragm inside a narrow steel pipe. In addition, it is possible to stably transmit the force, and it is possible to fix the bridge girder and the suspension material of the suspension type bridge without any aesthetic problems. In the anchoring structure of the present invention, the tension acting on the hanging material is transmitted from the socket to the end of the sheath tube through the supporting member by the coupling action between the projection formed on the outer periphery of the sheath tube and the concrete, and further, Since the structure is such that the force from the suspending material acting on the end of the sheath tube is transmitted to the bridge girder by the shear resistance acting between the projections on the outer periphery of the sheath tube and the concrete filled in the steel tube, The material can be fixed stably and firmly.
【００２７】なお、鞘管を囲む領域のコンクリート内に
鉄筋を配筋したり、鞘管内に充填材を充填・固化させる
ことによって、橋桁と吊材の定着をより安定かつ強固な
ものにすることができる。また、鋼管内へのコンクリー
トの充填に加えて、鞘管内にも充填材を充填すれば、鋼
管や鞘管内部への水等の侵入をさらに確実に防止して定
着部の各材の腐食を防止して定着部の寿命を延長させる
ことができる。The reinforcement of the bridge girder and the suspension material can be made more stable and strong by arranging reinforcing steel in the concrete surrounding the sheath pipe or filling and solidifying the filler in the sheath pipe. Can be. In addition to filling concrete inside the steel pipe, filling the inside of the sheath pipe with filler also more reliably prevents water and the like from entering the inside of the steel pipe and the inside of the sheath pipe, and prevents corrosion of each material in the fixing part. This can extend the life of the fixing unit.
【図１】本発明を適用する橋桁ユニットと吊材との定着
構造例を示す正面説明図。FIG. 1 is an explanatory front view showing an example of a fixing structure of a bridge girder unit and a suspension member to which the present invention is applied.
【図２】図１における橋桁ユニットと吊材との定着構造
の定着部の一部切欠断面拡大説明図。FIG. 2 is a partially cutaway enlarged explanatory view of a fixing portion of a fixing structure of a bridge girder unit and a suspension member in FIG.
【図３】図２のＡ−Ｂ矢視断面説明図。FIG. 3 is an explanatory sectional view taken along the line AB in FIG. 2;
【図４】（ａ）図は、従来から知られている斜張橋の基
本構成例を示す側面説明図、（ｂ）図は、（ａ）図の正
面説明図。FIG. 4 (a) is a side view showing a basic configuration example of a conventionally known cable stayed bridge, and FIG. 4 (b) is a front view of FIG. 4 (a).
【図５】従来の橋桁ユニットの基本構成例と吊材との定
着構造例を示す正面説明図。FIG. 5 is an explanatory front view showing an example of a basic configuration of a conventional bridge girder unit and an example of a fixing structure of a suspension member.
【図６】（ａ）図は、従来の橋桁ユニットと吊材との定
着構造例の定着部の一部切欠断面説明図、（ｂ）図は、
（ａ）図の鋼管のＡａ−Ａｂ矢視断面説明図。FIG. 6A is a partially cutaway explanatory view of a fixing portion of a conventional fixing structure example of a bridge girder unit and a suspension member, and FIG.
(A) Aa-Ab arrow sectional drawing explanatory drawing of the steel pipe of a figure.
【図７】従来の橋桁ユニットと吊材との他の定着構造例
の定着部の一部切欠断面説明図。FIG. 7 is a partially cutaway explanatory view of a fixing portion of another example of a fixing structure of a conventional bridge girder unit and a suspension member.
【図８】（ａ）図は、従来の橋桁ユニットと吊材との他
の定着構造例の定着部の一部断面説明図、（ｂ）図は、
（ａ）図のＡ−Ａ矢視説明図。FIG. 8A is a partial cross-sectional explanatory view of a fixing section of another example of a fixing structure of a conventional bridge girder unit and a suspension member, and FIG.
(A) AA arrow explanatory drawing of a figure.
１ 斜張橋 ２ 支持塔 ２ａ、２ｂ 支柱 ３ 鋼横桁 ４ 床材 ４ｏ 吊材取
付孔 ５ 鋼管 ５ｏ 貫通斜
孔 ６ 橋桁ユニット ７ 橋桁 ８ 吊材（斜材） ９ 支圧材 １０、１０ａ 鞘管 １１ ダイヤ
フラム １１ｏ 孔 １２ ソケッ
ト １３ コンクリート １４ａ ピン
定着金具 １４ｂ ピン固定式ソケット １５ ピン １６ 定着桁 １７ 突起 １８1 、１８2 伸縮性カバー １８ｏ 挿入
孔 １９ 縦筋 ２０ 補強筋 ２１ 鉄筋 ２２ モルタ
ル（充填材）DESCRIPTION OF SYMBOLS 1 Cable-stayed bridge 2 Support tower 2a, 2b Post 3 Steel cross beam 4 Floor material 4o Suspension mounting hole 5 Steel pipe 5o Penetrating oblique hole 6 Bridge girder unit 7 Bridge girder 8 Suspended material (diagonal material) 9 Supporting material 10, 10a Sheath tube DESCRIPTION OF SYMBOLS 11 Diaphragm 11o Hole 12 Socket 13 Concrete 14a Pin fixing bracket 14b Pin fixing socket 15 Pin 16 Fixing girder 17 Projection 181, 182 Elastic cover 18o Insertion hole 19 Vertical streak 20 Reinforcing bar 21 Reinforcing bar 22 Mortar (filling material)
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１２年５月１１日（２０００．５．１
１）[Submission Date] May 11, 2000 (2000.5.1)
1)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項１[Correction target item name] Claim 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００２[Correction target item name] 0002
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００２】[0002]
【従来の技術】従来から知られている斜張橋１に鋼管主
桁を適用した場合、基本的には、図４（ａ）、（ｂ）に
示すように、一対の支柱２ａ、２ｂを有する複数の支持
塔２と、図５に示すような横桁３と床材４と図６（ａ）
に示すような上下に貫通斜孔５ｏを有する鋼管桁５で形
成した橋桁ユニット６を多数連結してなる橋桁７と、橋
桁ユニット６の両側部と支持塔２の一対の支柱２ａ、２
ｂ間に張設された吊材（斜材）８とから構成される。2. Description of the Related Art When a steel pipe main girder is applied to a cable stayed bridge 1 conventionally known, basically, as shown in FIGS. 4 (a) and 4 (b), a pair of columns 2a and 2b are formed. A plurality of supporting towers 2, cross beams 3 as shown in FIG. 5, flooring materials 4 and FIG.
Vertically penetrating as shown in inclined hole 5o and bridge girder 7 the bridge beam unit 6 formed by steel girder 5 formed by connecting a number having a pair of posts 2a on both sides and the support column 2 of the bridge beam unit 6, 2
and a suspension member (diagonal member) 8 stretched between b.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００６】他の定着構造としては、図８（ａ）、
（ｂ）に示すように、斜張橋１の橋桁ユニット６の桁材
である鋼管５の貫通斜孔５ｏの下部周辺に、吊材８から
の反力を橋桁ユニット６に伝える定着桁１６を固定し、
定着桁１６に貫通斜孔５ｏに挿入した鞘管１０の支圧材
９を係止し、鞘管１０に挿入した吊材８の先端にソケッ
ト１２を取り付けて支圧材９に係止する定着構造があ
る。この定着構造においては、鞘管１０から橋桁ユニッ
ト６への力を定着桁１６を介して伝達するものである。
しかし、定着桁１６は鋼管５の周面に密着させた複雑な
形状となり、定着桁が鋼構造である場合では加工作業負
担が大きいし、定着桁がＲＣ構造である場合では打設が
困難であるなど施工性の問題もある。FIG. 8A shows another fixing structure.
As shown in (b), a fixing girder 16 for transmitting the reaction force from the suspension member 8 to the bridge girder unit 6 is provided around the lower part of the through-bore 5o of the steel pipe 5 which is the girder material of the bridge girder unit 6 of the cable stayed bridge 1. Fixed,
The fixing member 16 holds the supporting member 9 of the sheath tube 10 inserted in the oblique through hole 5 o, and the socket 12 is attached to the tip of the suspension member 8 inserted into the sheath tube 10 to lock the supporting member 9. There is a structure. In this fixing structure, the force from the sheath tube 10 to the bridge girder unit 6 is transmitted through the fixing girder 16.
However, fixing digit 16 is a complex shape which is in close contact with the peripheral surface of the steel pipe 5, to a large processing workload in the case fixing digit is steel structure, difficult pouring in the case fixing digit is RC structure There is also a problem of workability.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００８】[0008]
【課題を解決するための手段】本発明は、以下の（１）
〜（４）の発明により構成されるものである。 （１）．吊形式橋梁の鋼管桁材に孔を設け、その孔に、
外周に突起を有し下端部に支圧材を固着した鞘管を挿通
し、この鞘管に吊材を貫通させ、吊材の突出端に鞘管の
支圧材に係止するソケットを取り付け、鋼管内にコンク
リートを充填・固化させたことを特徴とする吊形式橋梁
における吊材の橋桁材への定着構造。 （２）．（１）において、鞘管の上端が鋼管の外周面か
ら突出していないことを特徴とする吊形式橋梁における
吊材の橋桁材への定着構造。 （３）．（１）または（２）において、鋼管内で充填・
固化させたコンクリートの少なくとも鞘管の外周を囲む
部位に鉄筋が配筋されていることを特徴とする吊形式橋
梁における吊材の橋桁材への定着構造。 （４）．（１）〜（３）のいずれかにおいて、鞘管内に
充填材を充填・固化させたことを特徴とする吊形式橋梁
における吊材の橋桁材への定着構造。The present invention provides the following (1).
To (4). (1). A hole is made in the steel pipe girder material of the suspension type bridge, and in the hole,
The sheath tube fixed bearing capacity material in the lower end portion has a projection on the outer periphery inserted, the sheath tube hanging member is communicated transmural, the socket for locking the bearing capacity material sheath pipe to the protruding end of Tsuzai An anchoring structure for suspension girders in suspension type bridges, characterized in that concrete is filled and solidified in steel pipes attached. (2). (1) The fixing structure of the suspension member to the bridge girder material in the suspension type bridge, wherein the upper end of the sheath tube does not protrude from the outer peripheral surface of the steel tube. (3). In (1) or (2), filling in steel pipe
A structure for fixing a suspension material to a bridge girder material in a suspension type bridge, wherein a reinforcing bar is arranged at least in a portion surrounding the outer periphery of the sheath tube of the solidified concrete. (4). In any one of (1) to (3), a filler is fixed to a bridge girder in a suspension type bridge, wherein a filler is filled and solidified in a sheath tube.
【手続補正５】[Procedure amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図１[Correction target item name] Fig. 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図１】（ａ）図は、本発明を適用する橋桁ユニットと
吊材との定着構造例を示す正面説明図、（ｂ）図は、
（ａ）図の側面説明図。 FIG. 1A is an explanatory front view showing an example of a fixing structure of a bridge girder unit and a suspension member to which the present invention is applied, and FIG.
(A) Side explanatory drawing of a figure.
【手続補正６】[Procedure amendment 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】符号の説明[Correction target item name] Explanation of sign
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【符号の説明】 １ 斜張橋 ２ 支持塔 ２ａ、２ｂ 支柱 ３ 鋼横桁 ４ 床材 ４ｏ 吊材取
付孔 ５ 鋼管 ５ｏ 貫通孔 ６ 橋桁ユニット ７ 橋桁 ８ 吊材（斜材） ９ 支圧材 １０、１０ａ 鞘管 １１ ダイヤ
フラム １１ｏ 孔 １２ ソケッ
ト １３ コンクリート １４ａ ピン
定着金具 １４ｂ ピン固定式ソケット １５ ピン １６ 定着桁 １７ 突起 １８1 、１８2 伸縮性カバー １８ｏ 挿入
孔 １９ 縦筋 ２０ 補強筋 ２１ 鉄筋 ２２ モルタ
ル（充填材）[Description of Reference Numerals] 1 cable-stayed bridge 2 supporting towers 2a, 2b post 3 steel crossbeams 4 flooring 4o Tsuzai mounting hole 5 steel 5o transmural hole 6 girder unit 7 bridge girder 8 Tsuzai (diagonal members) 9 Bearing material DESCRIPTION OF SYMBOLS 10, 10a Sheath tube 11 Diaphragm 11o Hole 12 Socket 13 Concrete 14a Pin fixing bracket 14b Pin fixing socket 15 Pin 16 Fixing girder 17 Projection 181, 182 Elastic cover 18o Insertion hole 19 Vertical bar 20 Reinforcing bar 21 Reinforcing bar 22 Mortar (filling) Material)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松岡 和巳 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部内 (72)発明者 冨永 知徳 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部内 (72)発明者 日紫喜 剛啓 東京都調布市飛田給２−19−１ 鹿島建設 株式会社技術研究所内 (72)発明者 古市 耕輔 東京都調布市飛田給２−19−１ 鹿島建設 株式会社技術研究所内 (72)発明者 新原 雄二 東京都調布市飛田給２−19−１ 鹿島建設 株式会社技術研究所内 Ｆターム(参考） 2D059 AA05 AA41 BB06 BB08 DD27 GG55 ──────────────────────────────────────────────────続 き Continued on front page (72) Inventor Kazumi Matsuoka 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Corporation Technology Development Division (72) Inventor Tomonori Tominaga 20-1 Shintomi, Futtsu-shi, Chiba Made in New Japan (72) Inventor Takehiro Nishiro Yoshi 2-19-1 Tobita-Ki, Chofu-shi, Tokyo Kashima Construction R & D Co., Ltd. (72) Kosuke Furuichi 2-19-1 Tobita-Ki, Chofu-shi, Tokyo Kashima Construction Technology Research Institute, Inc. (72) Inventor Yuji Niihara 2-19-1 Tobita, Chofu-shi, Tokyo Kashima Construction Technology Research Institute F-term (reference) 2D059 AA05 AA41 BB06 BB08 DD27 GG55
Claims (4)
孔に、外周に突起を有し下端部に支圧材を固着した鞘管
を挿通し、この鞘管に吊材（斜材またはハンガーロー
プ）を挿入・貫通させ、その突出端に鞘管の支圧材に係
止するソケットを取り付け、鋼管内にコンクリートを充
填・固化させたことを特徴とする吊形式橋梁における吊
材の橋桁材への定着構造。1. A hole is provided in a steel pipe girder material of a suspension type bridge, and a sheath tube having a projection on an outer periphery and having a supporting material fixed to a lower end portion is inserted into the hole. Material or a hanger rope), and a socket for engaging the bearing material of the sheath tube is attached to the protruding end thereof, and concrete is filled and solidified in the steel pipe. Anchoring structure to bridge girder material.
いないことを特徴とする請求項１記載の吊形式橋梁にお
ける吊材の橋桁材への定着構造。2. An anchoring structure of a suspension type bridge in a suspension type bridge according to claim 1, wherein an upper end of the sheath tube does not protrude from an outer peripheral surface of the steel tube.
の少なくとも鞘管の外周を囲む部位に鉄筋が配筋されて
いることを特徴とする請求項１または請求項２に記載の
吊形式橋梁における吊材の橋桁材への定着構造。3. The suspension type bridge according to claim 1, wherein a reinforcing bar is arranged at least in a portion surrounding the outer periphery of the sheath tube of the concrete filled and solidified in the steel tube. The anchoring structure of the suspension material to the bridge girder material.
を特徴とする請求項１〜請求項３のいずれかに記載の吊
形式橋梁における吊材の橋桁材への定着構造。4. The anchoring structure of a suspension type bridge in a suspension type bridge according to claim 1, wherein a filler is filled and solidified in the sheath tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000069716A JP4242035B2 (en) | 2000-03-14 | 2000-03-14 | Fixing structure of suspension material to bridge girder in suspension type bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000069716A JP4242035B2 (en) | 2000-03-14 | 2000-03-14 | Fixing structure of suspension material to bridge girder in suspension type bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001254317A true JP2001254317A (en) | 2001-09-21 |
| JP4242035B2 JP4242035B2 (en) | 2009-03-18 |
Family
ID=18588545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000069716A Expired - Fee Related JP4242035B2 (en) | 2000-03-14 | 2000-03-14 | Fixing structure of suspension material to bridge girder in suspension type bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4242035B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100697041B1 (en) * | 2005-08-09 | 2007-03-22 | (주)신화엔지니어링종합건축사사무소 | Platetype girder bridge which platetype girder and parapet are in one body, and constructing method of bridge using the platetype girder bridge |
| JP2007132077A (en) * | 2005-11-10 | 2007-05-31 | Yokogawa Bridge Corp | Construction method of rigid-frame bridge with angle brace member, and rigid-frame bridge with angle brace member |
| KR100772434B1 (en) * | 2005-08-12 | 2007-11-05 | 박경용 | steel pipe girder connecting steel pipes by steel brackets and installing the upper plate of a bridge onto the steel pipes, and constructing method of bridge using the steel girder |
| JP2012117215A (en) * | 2010-11-29 | 2012-06-21 | Ihi Infrastructure Systems Co Ltd | Detection device of tension of heavy object supporting cable |
| KR20150005959A (en) * | 2012-04-05 | 2015-01-15 | 소레탄체 프레씨네트 | Seal for cable anchor device of a cable construction |
| CN104652249A (en) * | 2014-10-14 | 2015-05-27 | 交通运输部公路科学研究所 | Force transmitting device for dragging rope and girder |
-
2000
- 2000-03-14 JP JP2000069716A patent/JP4242035B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100697041B1 (en) * | 2005-08-09 | 2007-03-22 | (주)신화엔지니어링종합건축사사무소 | Platetype girder bridge which platetype girder and parapet are in one body, and constructing method of bridge using the platetype girder bridge |
| KR100772434B1 (en) * | 2005-08-12 | 2007-11-05 | 박경용 | steel pipe girder connecting steel pipes by steel brackets and installing the upper plate of a bridge onto the steel pipes, and constructing method of bridge using the steel girder |
| JP2007132077A (en) * | 2005-11-10 | 2007-05-31 | Yokogawa Bridge Corp | Construction method of rigid-frame bridge with angle brace member, and rigid-frame bridge with angle brace member |
| JP2012117215A (en) * | 2010-11-29 | 2012-06-21 | Ihi Infrastructure Systems Co Ltd | Detection device of tension of heavy object supporting cable |
| KR20150005959A (en) * | 2012-04-05 | 2015-01-15 | 소레탄체 프레씨네트 | Seal for cable anchor device of a cable construction |
| KR102030395B1 (en) * | 2012-04-05 | 2019-10-10 | 소레탄체 프레씨네트 | Seal for cable anchor device of a cable construction |
| EP2834418B1 (en) * | 2012-04-05 | 2020-07-22 | Soletanche Freyssinet | Seal for cable anchor device of a cable construction |
| CN104652249A (en) * | 2014-10-14 | 2015-05-27 | 交通运输部公路科学研究所 | Force transmitting device for dragging rope and girder |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4242035B2 (en) | 2009-03-18 |
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