JP3308395B2 - Steel pipe joint and joint structure of steel pipe using the same - Google Patents

Steel pipe joint and joint structure of steel pipe using the same

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Publication number
JP3308395B2
JP3308395B2 JP14860094A JP14860094A JP3308395B2 JP 3308395 B2 JP3308395 B2 JP 3308395B2 JP 14860094 A JP14860094 A JP 14860094A JP 14860094 A JP14860094 A JP 14860094A JP 3308395 B2 JP3308395 B2 JP 3308395B2
Authority
JP
Japan
Prior art keywords
joint
steel pipe
plate
base
steel
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.)
Expired - Fee Related
Application number
JP14860094A
Other languages
Japanese (ja)
Other versions
JPH084125A (en
Inventor
勲 久保寺
武 山田
Original Assignee
株式会社巴コーポレーション
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Filing date
Publication date
Application filed by 株式会社巴コーポレーション filed Critical 株式会社巴コーポレーション
Priority to JP14860094A priority Critical patent/JP3308395B2/en
Publication of JPH084125A publication Critical patent/JPH084125A/en
Application granted granted Critical
Publication of JP3308395B2 publication Critical patent/JP3308395B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】この発明は、送電用鉄塔や鋼管構
造物の骨組に使用する鋼管継手及びこれを使用した鋼管
の継手部構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel pipe joint used for a frame of a power transmission tower or a steel pipe structure, and a joint structure of a steel pipe using the same.

【0002】[0002]

【従来技術】従来、送電用鉄塔や鋼管構造物の構築現場
において、図6に示すように、対向する一対の鋼管20
の端部同士を溶接継手21により接合する場合には、予
め工場において両鋼管20の端部の外面に各々エレクシ
ョンピース22を周方向に等間隔で溶接により取り付
け、これを建設現場において対向するエレクションピー
ス22間に各々スプライスプレート23を架け渡しボル
ト締結することで、両鋼管20の端部同士を仮付けす
る。次いで、鋼管接合部の開先内を一次溶接(スプライ
スプレート23を取り外して全周溶接するまで仮付け状
態を保持するための溶接)を行う。この溶接は足場が悪
い高所での作業となり、溶接環境が悪く、作業能率も悪
かった。また、一次溶接の後、スプライスプレート23
を取り外し、開先内を全周溶接する。しかる後、エレク
ションピース22を除去し、除去跡をグラインダーで平
滑に仕上げなければならない。更に、使用する鋼管20
の板厚が厚い場合には、鋼管20の端部の溶接を多層盛
り溶接で行わなければならず、その溶接管理も非常に厳
しいものがある。従って、鋼管接合作業の能率が悪く
て、送電用鉄塔や鋼管構造物の構築工期の長期化を招い
ていた。
2. Description of the Related Art Conventionally, at a construction site of a power transmission tower or a steel pipe structure, as shown in FIG.
When the ends of the steel pipes 20 are joined to each other by welding joints 21, erection pieces 22 are attached to the outer surfaces of the ends of the two steel pipes 20 at equal intervals in the circumferential direction in advance in a factory, and the erection pieces 22 are opposed to each other at a construction site. Ends of both steel pipes 20 are temporarily attached to each other by bridging a splice plate 23 between the pieces 22. Next, the inside of the groove of the steel pipe joint is subjected to primary welding (welding for maintaining the tacked state until the splice plate 23 is removed and the entire circumference is welded). This welding was performed at a high place where the scaffold was poor, and the welding environment was poor and the work efficiency was poor. After the primary welding, the splice plate 23
And weld all around the groove. Thereafter, the erection piece 22 must be removed, and the removal mark must be finished smoothly with a grinder. Further, the steel pipe 20 to be used
Is thick, the end of the steel pipe 20 must be welded by multi-layer welding, and the welding management is very strict. Therefore, the efficiency of the steel pipe joining operation is poor, and the construction period of the power transmission tower and the steel pipe structure has been prolonged.

【0003】そこで、従来、対向する一対の鋼管の端部
に各々継手部を設け、これら継手部を互いに突き合わ
せ、これら継手部に各々これらを跨ぐ継手板を添接し、
該継手板に前記継手部をボルト締結することにより両鋼
管の端部同士を互いに接合することが考えられている。
Therefore, conventionally, joints are provided at the ends of a pair of steel pipes facing each other, these joints are butted against each other, and a joint plate straddling each of these joints is attached to the joints.
It has been considered that the ends of both steel pipes are joined to each other by bolting the joint to the joint plate.

【0004】前記継手部の設け方としては、鋼管の端部
に取付プレートを溶接し、該取付プレートに継手部を設
ける方法と、鍛造等で製作されて一側が鋼管の端部に溶
接される基部を備え、該基部の他側に継手部を設けてな
る鋼管継手を予め製作しておき、該鋼管継手の基部を鋼
管の端部に溶接する方法とがある。前者の方法では、鋼
管の端部に取付プレートを溶接した後、該取付プレート
に継手部を設ける作業が一々必要となることから、作業
能率が悪い。このため、最近では、鋼管の端部に鋼管継
手を取り付けるだけで済む後者の方法が採用されてい
る。
[0004] As for the method of providing the joint, there is a method of welding a mounting plate to an end of a steel pipe and providing a joint to the mounting plate, or a method of manufacturing by forging or the like and welding one side to an end of the steel pipe. There is a method in which a steel pipe joint having a base and a joint part provided on the other side of the base is manufactured in advance, and the base of the steel pipe joint is welded to an end of the steel pipe. In the former method, after the attachment plate is welded to the end of the steel pipe, an operation for providing a joint portion to the attachment plate is required one by one, so that the work efficiency is poor. For this reason, the latter method has recently been adopted in which it is only necessary to attach a steel pipe joint to the end of the steel pipe.

【0005】前記鋼管継手には、実公平1−13128
号公報に記載されたものがある。この鋼管継手は、図7
に示すように、円盤状の厚板部24(基部)の一面に厚
板部24と直角に複数枚の羽根板25(継手部)を放射
状に溶接して構成している。そして、対向する一対の鋼
管20を接合する場合には、これら鋼管20の端部に各
々厚板部24の他面を溶接し、厚板部24の一面に設け
た羽根板25を互いに突き合わせ、これら羽根板25に
各々これを跨ぐ図示しない添設板(継手板)を添接さ
せ、該添設板に羽根板25をボルト締結することにより
両鋼管20の端部同士を互いに接合している。
[0005] The steel pipe joint is provided with Japanese Utility Model Publication No. 1-128128.
Is described in Japanese Patent Application Publication No. This steel pipe joint is shown in FIG.
As shown in FIG. 2, a plurality of blade plates 25 (joint portions) are radially welded to one surface of a disk-shaped thick plate portion 24 (base portion) at right angles to the thick plate portion 24. When joining a pair of steel pipes 20 facing each other, the other surfaces of the thick plate portions 24 are welded to the ends of the steel pipes 20, respectively, and the blade plates 25 provided on one surface of the thick plate portions 24 are butted against each other. An end plate (joint plate) (not shown) straddling each of the blade plates 25 is attached to each of the blade plates 25, and the ends of the steel pipes 20 are joined to each other by fastening the blade plate 25 to the attached plate by bolts. .

【0006】[0006]

【発明の解決しようとする課題】しかしながら、上記従
来の鋼管継手及びこれを使用した鋼管の継手部構造にあ
っては、厚板部24の一面に放射状の突出部26を形成
し、これら突出部26に各々羽根板25を添接させて、
厚板部24の中心に羽根板25の中心を合わせた状態で
溶接することが必要となる。このように突出部26と羽
根板25間の溶接箇所等多くの溶接箇所が存在している
上に、溶接方向が放射状であるために、溶接作業は溶接
欠陥が生じないように細心の注意と作業管理をもって行
うことが必要となる。また、突出部26に各々羽根板2
5を添接させているに過ぎないため、溶接時に厚板部2
4の中心に羽根板25の中心を合わせることは容易でな
い。従って、鋼管継手の製作能率が悪く、製作コストの
上昇を招く。
However, in the above-mentioned conventional steel pipe joint and the joint structure of the steel pipe using the same, a radial projecting portion 26 is formed on one surface of the thick plate portion 24, and these projecting portions are formed. 26, the blades 25 are attached to each other,
It is necessary to perform welding in a state where the center of the blade plate 25 is aligned with the center of the thick plate portion 24. As described above, since there are many welding points such as the welding point between the protruding portion 26 and the slat 25, and the welding direction is radial, the welding operation must be performed with great care so that welding defects do not occur. It is necessary to do it with work management. In addition, each of the blades 2
5 is attached only to the thick plate portion 2 during welding.
It is not easy to align the center of the slat 25 with the center of the slat 4. Therefore, the production efficiency of the steel pipe joint is poor, and the production cost is increased.

【0007】また、鋼管継手の製作ミスで厚板部24の
中心に羽根板25の中心が合っていない場合に、厚板部
24を鋼管20の端部に取り付け、羽根板25とこれを
跨ぐ添設板とボルト締結して、鋼管20の端部同士を接
合したときには、これら両鋼管20間に芯ずれが生じる
こととなり、この結果、両鋼管20間の荷重の伝達が不
確実なものとなる。
In the case where the center of the thick plate portion 24 is not aligned with the center of the blade plate 25 due to a manufacturing error of the steel pipe joint, the thick plate portion 24 is attached to the end of the steel pipe 20, and the blade plate 25 and the blade plate 25 are straddled. When the ends of the steel pipes 20 are joined to each other by bolting with the attached plate, misalignment occurs between the steel pipes 20, and as a result, transmission of the load between the steel pipes 20 is uncertain. Become.

【0008】この発明は上記課題を解決するためになし
たもので、その第1の目的は、鋼管継手を精度良く製作
できるようにすることにある。
The present invention has been made to solve the above problems, and a first object of the present invention is to enable a steel pipe joint to be manufactured with high accuracy.

【0009】また、この発明の第2の目的は、組立て施
工が容易にできると共に、荷重のスムーズな伝達が図れ
るようにすることにある。
A second object of the present invention is to facilitate assembly and construction and to smoothly transmit a load.

【0010】[0010]

【課題を解決するための手段】上記目的を達成するため
に、この発明は、請求項1に記載されているように、一
側が鋼管の端部に溶接接合される略円筒形の基部を備
え、該基部の中心部に放射状の連結板部を介して連結筒
体を同心に連設すると共に、前記連結筒体及び連結板部
を前記鋼管側の反対側に延在させて、該連結板部の延在
部を継手部としたものである。
In order to achieve the above object, the present invention comprises a substantially cylindrical base which is welded on one side to an end of a steel pipe. Connecting a connecting cylinder to the center of the base via a radial connecting plate in a concentric manner, and extending the connecting cylinder and the connecting plate to the opposite side of the steel pipe side, The extending part of the part is a joint part.

【0011】また、この発明は、請求項2に記載されて
いるように、一対の鋼管の端部を対向して配置し、これ
ら鋼管の端部に各々略円筒形の基部の一側を溶接接合
し、該基部の中心部に各々放射状の連結板部を介して連
結筒体を同心に連設すると共に、前記連結筒体及び連結
板部を各々互いに突き合わせる側に延在させて、該連結
板部の延在部を継手部とし、これら継手部を互いに突き
合わせ、両継手部に各々これを跨ぐ継手板を添接させ、
該継手板に前記継手部を各々ボルト締結してなるもので
ある。
According to a second aspect of the present invention, the ends of a pair of steel pipes are arranged to face each other, and one end of each of the substantially cylindrical bases is welded to the ends of the steel pipes. Joining and connecting the connecting cylinders concentrically to the center of the base via respective radial connecting plate portions, and extending the connecting cylinder and the connecting plate portions to the side where they abut each other, The extending portion of the connecting plate portion is a joint portion, these joint portions are butted against each other, and a joint plate straddling the joint portion is attached to both joint portions,
The joint portions are each bolted to the joint plate.

【0012】[0012]

【作用】上記請求項1に記載の構成によれば、基部の中
心部に連結筒体を同心に連設した放射状の連結板部の延
在部を継手部として、継手部の中心を基部の中心に合致
させて、基部を鋼管の端部に溶接接合したときに、継手
部の中心を鋼管の端部の中心に合致させる。
According to the structure of the first aspect of the present invention, the extension of the radial connecting plate portion in which the connecting cylinder is concentrically connected to the center of the base is the joint, and the center of the joint is the base. The center of the joint is aligned with the center of the end of the steel pipe when the base is welded to the end of the steel pipe.

【0013】上記請求項2に記載の構成によれば、組立
て施工は、一対の鋼管の端部を対向して配置し、これら
鋼管の端部に各々基部を全周溶接等で溶接接合して継手
部を互いに突き合わせ、これら継手部に各々これを跨ぐ
継手板を添接させ、該継手板に前記継手部をボルト締結
することで行う。この場合、基部の中心部に連結筒体を
同心に連設した放射状の連結板部の延在部を継手部とし
て、継手部の中心を基部の中心、しいては基部を設けた
鋼管の端部の中心に合致させて、両鋼管同士を同心に接
合する。
According to the construction of the second aspect, in the assembling operation, the ends of the pair of steel pipes are arranged to face each other, and the bases are respectively welded to the ends of the steel pipes by full circumference welding or the like. The joint portions are butted against each other, a joint plate straddling the joint portions is attached to each joint portion, and the joint portion is bolted to the joint plate. In this case, the extending portion of the radial connecting plate portion in which the connecting tubular body is concentrically connected to the center of the base portion is used as the joint portion, and the center of the joint portion is the center of the base portion, and thus the end of the steel pipe provided with the base portion. The two steel pipes are joined concentrically to match the center of the part.

【0014】このような鋼管の継手部構造において、一
方の鋼管から他方の鋼管への荷重の伝達は、一方の鋼管
側の鋼管継手(基部,連結筒体,連結板部及び継手部)
と継手板と他方の鋼管側の鋼管継手(基部,連結筒体,
連結板部及び継手部)とを経て順次行われる。この場
合、鋼管接合側の基部と連結筒体と連結板部の全断面
と、ボルト継手部側の連結筒体と継手部と継手板の全断
面とを略同一の断面にすることが可能である。略同一断
面とした場合には、一方の鋼管から鋼管継手及び継手板
を介して他方の鋼管に軸力がスムーズに伝達される。
In such a joint structure of a steel pipe, the transmission of a load from one steel pipe to the other steel pipe is performed by a steel pipe joint (a base, a connecting cylinder, a connecting plate, and a joint) on one steel pipe.
And the joint plate and the steel pipe joint on the other steel pipe side (base, connecting cylinder,
(A connecting plate portion and a joint portion). In this case, it is possible to make the entire cross section of the base portion, the connecting cylinder, and the connecting plate portion on the steel pipe joining side, and the entire cross section of the connecting tubular body, the joint portion, and the joint plate on the bolt joint portion side substantially the same. is there. When the cross sections are substantially the same, the axial force is smoothly transmitted from one steel pipe to the other steel pipe via the steel pipe joint and the joint plate.

【0015】[0015]

【実施例】以下、この発明の実施例を図面により説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.

【0016】図1はこの発明の一実施例になる鋼管の継
手部構造を示す斜視図、図2(1)は図1のP矢視側面
図、(2)は(1)のA−A線に沿う縦断面図、図3は
図2(2)のB−B線に沿う断面図、図4は同鋼管の継
手部構造の変形例を示す図3に対応した断面図である。
FIG. 1 is a perspective view showing a joint structure of a steel pipe according to one embodiment of the present invention, FIG. 2 (1) is a side view taken along the arrow P in FIG. 1, and (2) is an AA in (1). 3 is a cross-sectional view taken along the line BB of FIG. 2 (2), and FIG. 4 is a cross-sectional view corresponding to FIG. 3 showing a modification of the joint structure of the steel pipe.

【0017】鋼管の継手部構造は、一対の鋼管1,2を
対向して配置し、これら鋼管1,2の端部に各々鋼管継
手3,4を取り付け、これら鋼管継手3,4を継手板5
を介して接合してなるものであり、筒状のカバー部材6
により覆われている。
The joint structure of a steel pipe is such that a pair of steel pipes 1 and 2 are arranged to face each other, steel pipe joints 3 and 4 are respectively attached to ends of the steel pipes 1 and 2, and these steel pipe joints 3 and 4 are connected to a joint plate. 5
And a cylindrical cover member 6
Covered by

【0018】鋼管継手3,4は同一の構造を有するもの
であるため、一方の鋼管継手3だけについてその構造を
説明すると、鋼管継手3は一側が鋼管1の端部に溶接接
合される略円筒形の基部7を備えている。この基部7の
中心部には放射状の連結板部9を介して連結筒体8が同
心に連設されている。連結筒体8及び連結板部9は鋼管
1側の反対側に延在していて、連結板部9の延在部は継
手部10とされている。この放射状の継手部10にはボ
ルト穴11が形成されている。12は連結板部9間に形
成された開口部である。このような鋼管継手3,4はそ
の製作性を向上させるために鋳鋼で一体に製作されてい
て、製作後にボルト穴11が形成されている。尚、連結
筒体8の径は、継手部10の必要な大きさを確保した状
態において適宜設定され、例えば図3に示すように連結
筒体8が大径に形成されていても良いことは言うまでも
ない。
Since the steel pipe joints 3 and 4 have the same structure, the structure of only one steel pipe joint 3 will be described. The steel pipe joint 3 has a substantially cylindrical shape having one side welded to the end of the steel pipe 1. The base 7 is shaped. A connecting cylinder 8 is concentrically connected to the center of the base 7 via a radial connecting plate 9. The connecting cylinder 8 and the connecting plate 9 extend on the side opposite to the steel pipe 1, and the extending portion of the connecting plate 9 is a joint 10. A bolt hole 11 is formed in the radial joint portion 10. Reference numeral 12 denotes an opening formed between the connecting plate portions 9. The steel pipe joints 3 and 4 are integrally made of cast steel in order to improve the manufacturability, and the bolt holes 11 are formed after the manufacture. The diameter of the connecting cylinder 8 is appropriately set in a state where the required size of the joint portion 10 is secured. For example, as shown in FIG. 3, the connecting cylinder 8 may be formed to have a large diameter. Needless to say.

【0019】鋼管継手3,4は鋳造により製作されてい
る。鋼管継手3,4の構造上、各構成部分(基部7,連
結筒体8,連結板部9,継手部10)の板厚を同じ厚さ
とすることが可能である。同じ板厚として鋳造により鋼
管継手3,4を製作すれば、板厚の変化で生じる応力集
中や不均一な熱収縮を防いで、精度の良い鋼管継手3,
4が得られるという利点がある。
The steel pipe joints 3 and 4 are manufactured by casting. Due to the structure of the steel pipe joints 3 and 4, it is possible to make the thickness of each component (the base 7, the connecting cylinder 8, the connecting plate 9, the joint 10) the same. If the steel pipe joints 3 and 4 are manufactured by casting with the same thickness, it is possible to prevent stress concentration and uneven heat shrinkage caused by a change in the thickness of the steel pipe joints.
4 is obtained.

【0020】鋼管継手3,4を使用して鋼管の継手部構
造が次のように組み立てられている。つまり、両鋼管
1,2の端部には各々鋼管継手3,4の基部7の一側が
全周溶接で接合されていて、これら基部7の中心部には
各々放射状の連結板部9を介して連結筒体8が同心に連
設されている。連結筒体8及び連結板部9は各々鋼管
1,2を互いに突き合わせる側に延在していて、連結板
部9の延在部は各々継手部10とされている。これら継
手部10には各々ボルト穴11が穴明け加工で形成され
ると共に、継手部10を接合する継手板5には各々ボル
ト穴14が形成されている。そして、対向する継手部1
0の一方の継手部10に継手板5の一側を添接させ、継
手板5の他側を他方の継手部10に添接させて、突き合
わせた継手部10の両側に各々継手板5を配置した後、
これら継手板5のボルト穴14及び継手部10のボルト
穴11に高力ボルト15を挿通させ、高力ボルト15に
ナット16を螺合して締め付けることによって、継手部
10及び継手板5が各々ボルト締結されている。
The joint structure of the steel pipe is assembled using the steel pipe joints 3 and 4 as follows. That is, one end of the base 7 of each of the steel pipe joints 3 and 4 is joined to the end of each of the steel pipes 1 and 2 by full-circumferential welding, and the center of the base 7 is connected to the center of the base 7 via the radial connecting plate 9. The connecting cylinder 8 is concentrically connected. The connecting cylinder 8 and the connecting plate 9 extend to the side where the steel pipes 1 and 2 abut each other, and the extending portions of the connecting plate 9 are joints 10, respectively. A bolt hole 11 is formed in each of the joint portions 10 by drilling, and a bolt hole 14 is formed in each of the joint plates 5 to which the joint portions 10 are joined. Then, the facing joint portion 1
0, one side of the joint plate 5 is in contact with one joint portion 10, and the other side of the joint plate 5 is in contact with the other joint portion 10. After placing,
A high-strength bolt 15 is inserted into the bolt hole 14 of the joint plate 5 and the bolt hole 11 of the joint portion 10, and a nut 16 is screwed into the high-strength bolt 15 to tighten the joint portion 10 and the joint plate 5. Bolts are fastened.

【0021】前記鋼管の継手部構造における基部7間に
は、その外観体裁を良くするカバー部材6が取り付けら
れ、カバー部材6により、ボルト継手部を構成する継手
部10及び継手板5が覆われている。このカバー部材6
は2つ割り構造のもので、円弧状断面を有する2つの分
割体6a、6bから構成されている。カバー部材6は鋼
管の継手部構造の組立て後、基部7間に介装して互いに
対向して配置されて、シーリングビード溶接により組み
立てられ、かつ基部7に各々シーリングビード溶接によ
り接合されている。このカバー部材6は荷重の伝達には
一切関与しないものである。
A cover member 6 for improving the appearance of the steel pipe is provided between the bases 7 in the joint structure of the steel pipe. The cover member 6 covers the joint portion 10 and the joint plate 5 constituting the bolt joint portion. ing. This cover member 6
Has a split structure, and is composed of two divided bodies 6a and 6b having an arc-shaped cross section. After assembling the joint structure of the steel pipe, the cover member 6 is interposed between the bases 7 and arranged to face each other, assembled by sealing bead welding, and joined to the base 7 by sealing bead welding. The cover member 6 does not participate in transmitting the load at all.

【0022】以上の構成において、鋼管継手3,4の基
部7の中心部に連結筒体8を同心に連設した放射状の連
結板部9の延在部を継手部10として、継手部10の中
心を基部7の中心に合致させて、基部7を各々鋼管1,
2の端部に溶接接合したときに、継手部10の中心を各
々鋼管1,2の端部の中心に合致させる。
In the above configuration, the extending portion of the radial connecting plate 9 in which the connecting tubular body 8 is concentrically connected to the center of the base 7 of the steel pipe joints 3 and 4 is defined as the joint 10, and The center is aligned with the center of the base 7, and the base 7 is
The center of the joint 10 is aligned with the center of the end of each of the steel pipes 1 and 2 when it is welded to the end of the pipe 2.

【0023】送電用鉄塔や鋼管構造物の構築現場におい
て、鋼管継手3,4を使用して組立て施工を行うに当た
っては、前記構造物の骨組を構成する一対の鋼管1,2
のうち、鋼管1の両端部に各々鋼管継手3を溶接し、鋼
管2の両端部に各々鋼管継手4を溶接した後、前記鋼管
1,2に溶融亜鉛めっきを施しておく。鋼管継手3が取
り付けられた鋼管1に溶融亜鉛めっきを施す場合には、
鋼管1を傾斜状態のままめっき槽内の溶融亜鉛めっき液
に浸漬し、めっき完了後再び傾斜状態で取り出す。この
とき、鋼管1の上位端部に取り付けた鋼管継手3の開口
部12を介して鋼管1内の空気が外部に排出されること
から、鋼管1の下位端部に取り付けた鋼管継手3の開口
部12を介して鋼管1内にまで溶融亜鉛めっき液が出入
りする。このようにして、前記鋼管継手3及び鋼管1に
溶融亜鉛めっきを施す。
When assembling and using the steel pipe joints 3 and 4 at a construction site of a power transmission tower or a steel pipe structure, a pair of steel pipes 1 and 2 constituting a framework of the structure are used.
Of these, the steel pipe joints 3 are welded to both ends of the steel pipe 1 and the steel pipe joints 4 are welded to both ends of the steel pipe 2, and then the steel pipes 1 and 2 are hot-dip galvanized. When galvanizing the steel pipe 1 to which the steel pipe joint 3 is attached,
The steel pipe 1 is immersed in the hot dip galvanizing solution in the plating tank while being tilted, and is taken out again after the plating is completed. At this time, since the air inside the steel pipe 1 is discharged to the outside through the opening 12 of the steel pipe joint 3 attached to the upper end of the steel pipe 1, the opening of the steel pipe joint 3 attached to the lower end of the steel pipe 1 is opened. The hot-dip galvanizing solution flows into and out of the steel pipe 1 through the part 12. Thus, the steel pipe joint 3 and the steel pipe 1 are hot-dip galvanized.

【0024】鋼管継手4が取り付けられた鋼管2に溶融
亜鉛めっきを施す場合も同様に行って、鋼管継手4及び
鋼管2に溶融亜鉛めっきを施す。
The same applies to the case where hot dip galvanization is applied to the steel pipe 2 to which the steel pipe joint 4 is attached, and the hot dip galvanization is applied to the steel pipe joint 4 and the steel pipe 2.

【0025】このように構成した鋼管継手3,4は各構
成部分を同一の板厚とすることができる。同一の板厚と
した場合には、各々の加熱温度が同じとなり、それだけ
めっき時間を短縮して、めっき作業が能率良く行えるこ
ととなる。また、鋼管継手3,4の構成上、鋼管継手3
の基部7と鋼管1の端部との溶接継手部、及び、鋼管継
手4の基部7と鋼管2の端部との溶接継手部に極めて大
きな板厚差を生じさせないようにできることから、上記
溶融亜鉛めっき時に溶接部に割れが生じることはない。
In the steel pipe joints 3 and 4 configured as described above, each component can have the same thickness. When the plate thickness is the same, the respective heating temperatures become the same, so that the plating time can be shortened and the plating operation can be performed efficiently. In addition, due to the configuration of the steel pipe joints 3 and 4,
It is possible to prevent an extremely large thickness difference between the welded joint between the base 7 of the steel pipe 1 and the end of the steel pipe 1 and the welded joint between the base 7 of the steel pipe joint 4 and the end of the steel pipe 2. Cracks do not occur in the weld during galvanization.

【0026】また、組立て施工は、鋼管1,2の端部を
対向して配置し、これら鋼管1,2の端部に各々設けた
鋼管継手3,4の継手部10を互いに突き合わせ、これ
ら継手部10に各々これを跨ぐ継手板5を添接させ、該
継手板5に前記継手部10をボルト締結することで行
う。
In the assembling work, the ends of the steel pipes 1 and 2 are arranged to face each other, and the joints 10 of the steel pipe joints 3 and 4 provided at the ends of the steel pipes 1 and 2 are abutted against each other. This is performed by attaching a joint plate 5 straddling each of the joints 10 to the joint 10 and fastening the joint 10 to the joint plate 5 with bolts.

【0027】このようにして得られた鋼管の継手部構造
においては、鋼管継手3,4の基部7の中心部に各々連
結筒体8を同心に連設した放射状の連結板部9の延在部
を継手部10として、継手部10の中心を各々基部7の
中心、しいてはこれら基部7を各々設けた鋼管1,2の
端部の中心に合致させていることから、鋼管1,2同士
は同心に接合されることとなる。
In the joint structure of the steel pipe obtained in this manner, the radial connecting plate 9 having the connecting cylinders 8 concentrically connected to the center of the base 7 of the steel pipe joints 3 and 4 respectively extends. The joint is a joint 10 and the center of the joint 10 is aligned with the center of the base 7 and the center of the ends of the steel pipes 1 and 2 provided with these bases 7, respectively. They will be joined concentrically.

【0028】また、一方の鋼管1から他方の鋼管2への
荷重の伝達は、鋼管1側の鋼管継手3と継手板5と鋼管
2側の鋼管継手4とを経て順次行われる。この場合、鋼
管接合側の基部7と連結筒体8と連結板部9の全断面
と、ボルト継手部側の連結筒体8と継手部10と継手板
5の全断面とを略同一の断面にすることが可能である。
略同一断面とした場合には、鋼管継手3,4及び継手板
5を介して鋼管1,2同士を接続して構築した送電用鉄
塔や鋼管構造物が架線荷重や風力等の外力を受けて鋼管
1,2に軸力が作用したときには、一方の鋼管1から鋼
管継手3,4及び継手板5を介して他方の鋼管2に前記
軸力がスムーズに伝達される。
The transmission of the load from one steel pipe 1 to the other steel pipe 2 is sequentially performed via the steel pipe joint 3 and the joint plate 5 on the steel pipe 1 side and the steel pipe joint 4 on the steel pipe 2 side. In this case, the entire cross section of the base 7, the connection cylinder 8 and the connection plate 9 on the steel pipe joining side, and the entire cross section of the connection cylinder 8, the joint 10 and the joint plate 5 on the bolt joint side are substantially the same. It is possible to
In the case of substantially the same cross section, a power transmission tower or a steel pipe structure constructed by connecting the steel pipes 1 and 2 via the steel pipe joints 3 and 4 and the joint plate 5 is subjected to an external force such as an overhead load or wind force. When an axial force acts on the steel pipes 1 and 2, the axial force is smoothly transmitted from one steel pipe 1 to the other steel pipe 2 via the steel pipe joints 3 and 4 and the joint plate 5.

【0029】尚、上記実施例では、鋼管の継手部構造
を、鋼管継手3,4を使用して鋼管1,2同士を接合す
る場合について説明したが、鋼管継手3を使用して鋼管
17等に設けたガセットプレート18と接合する場合に
も適用しても良い。
In the above embodiment, the case where the steel pipes 1 and 2 are joined using the steel pipe joints 3 and 4 as the joint structure of the steel pipe has been described. Also, the present invention may be applied to a case where the gusset plate 18 is joined to the gusset plate 18 provided in the above.

【0030】この鋼管の継手部構造においては、一方の
鋼管1と他方の鋼管17等との間の荷重の伝達は、一方
の鋼管1側の鋼管継手3(基部7,連結筒体8,連結板
部9及び継手部10)と継手板5と他方の鋼管17等側
のガセットプレート18とを経て順次行われる。この場
合、鋼管接合側の基部7と連結筒体8と連結板部9の全
断面と、ボルト継手部側の連結筒体8と継手部10と継
手板5の全断面とを略同一の断面にすることが可能であ
る。略同一断面とした場合には、一方の鋼管1から鋼管
継手3、継手板5及びガセットプレート18を介して他
方の鋼管17等に軸力がスムーズに伝達される。
In this joint structure of a steel pipe, the transmission of the load between the one steel pipe 1 and the other steel pipe 17 or the like is performed by the steel pipe joint 3 (the base 7, the connecting cylinder 8, the connecting pipe 8, and the connecting pipe 8) on the one steel pipe 1 side. This is sequentially performed through the plate portion 9 and the joint portion 10), the joint plate 5, and the gusset plate 18 on the other steel pipe 17 and the like side. In this case, the entire cross section of the base 7, the connection cylinder 8 and the connection plate 9 on the steel pipe joining side, and the entire cross section of the connection cylinder 8, the joint 10 and the joint plate 5 on the bolt joint side are substantially the same. It is possible to When the cross sections are substantially the same, the axial force is smoothly transmitted from one steel pipe 1 to the other steel pipe 17 via the steel pipe joint 3, the joint plate 5, and the gusset plate 18.

【0031】[0031]

【発明の効果】以上の通り、この発明は、請求項1記載
のものにおいては、基部の中心部に放射状の連結板部を
介して連結筒体を同心に連設して、該連結筒体の外周部
に設けた継手部の中心を前記基部の中心に合致させた精
度の良い鋼管継手を製作することができる。この鋼管継
手はその構成部分の板厚を同じ厚さとすることが可能で
あり、同じ板厚とした場合には、鋳物の製作時に板厚の
変化で生じる応力集中や不均一な熱収縮を防ぐことがで
きることから、鋳造による一体製作ができることとな
り、従来に比べて製作能率の向上及び製作精度の向上並
びに製作コストの低減が図れる。また、鋼管継手の基部
を鋼管の端部に溶接接合したときには、継手部の中心は
鋼管の端部の中心に合致するから、鋼管の継手部構造の
組立てが有効に行われる。
As described above, according to the present invention, according to the first aspect, the connecting cylinder is concentrically connected to the center of the base via the radial connecting plate portion, and the connecting cylinder is provided. It is possible to manufacture a high-precision steel pipe joint in which the center of the joint portion provided on the outer peripheral portion of the steel pipe matches the center of the base portion. This steel pipe joint can be made to have the same thickness of its component parts, and if the same thickness is used, it prevents stress concentration and uneven heat shrinkage caused by changes in the thickness during casting. As a result, integrated production by casting can be performed, so that production efficiency can be improved, production accuracy can be improved, and production cost can be reduced as compared with the related art. Further, when the base of the steel pipe joint is welded to the end of the steel pipe, the center of the joint coincides with the center of the end of the steel pipe, so that the joint structure of the steel pipe is effectively assembled.

【0032】また、この発明は、請求項2記載のものに
おいては、対向する一対の鋼管の端部に各々基部を全周
溶接等で溶接接合して継手部を互いに突き合わせ、これ
ら継手部に各々これを跨ぐ継手板を添接させ、該継手板
に前記継手部をボルト締結することで、組立て施工を容
易に行うことができ、その際、鋼管の端部の中心に各々
継手部の中心が合致することから、従来のような心ずれ
を生じることなく鋼管同士を容易に接合することができ
る。従って、従来に比べて組立て施工の能率の向上が図
れる。
Further, according to the present invention, in the second aspect of the present invention, the bases are welded to the ends of the pair of opposed steel pipes by full circumference welding or the like to butt the joints to each other, and the joints are respectively joined to the joints. By assembling the joint plate straddling this and bolting the joint portion to the joint plate, assembly and construction can be easily performed. At that time, the center of each joint portion is located at the center of the end of the steel pipe. Since they match, the steel pipes can be easily joined to each other without causing misalignment as in the related art. Therefore, the efficiency of assembly and construction can be improved as compared with the related art.

【0033】また、鋼管接合側の基部と連結筒体と連結
板部の全断面と、ボルト継手部側の連結筒体と継手部と
継手板の全断面とを略同一の断面にすることが可能であ
り、略同一断面とした場合には、一方の鋼管から鋼管継
手及び継手板を介して他方の鋼管に軸力をスムーズに伝
達させることができる。
Further, it is preferable that the cross section of the base, the connecting cylinder and the connecting plate on the steel pipe joining side and the cross section of the connecting cylinder, the joint and the joint plate on the bolt joint side are substantially the same. If it is possible to make the sections substantially the same, the axial force can be smoothly transmitted from one steel pipe to the other steel pipe via the steel pipe joint and the joint plate.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明の一実施例である鋼管の継手部構造を
示す斜視図である。
FIG. 1 is a perspective view showing a joint structure of a steel pipe according to an embodiment of the present invention.

【図2】(1) 図1のP矢視側面図である。 (2) (1)のA−A線に沿う縦断面図である。FIG. 2A is a side view of FIG. (2) It is a longitudinal cross-sectional view which follows the AA line of (1).

【図3】図2(2)のB−B線に沿う断面図である。FIG. 3 is a sectional view taken along line BB of FIG. 2 (2).

【図4】同鋼管の継手部構造の変形例を示す図3に対応
した断面図である。
FIG. 4 is a sectional view corresponding to FIG. 3, showing a modification of the joint structure of the steel pipe.

【図5】(1) この発明の他の実施例である鋼管の継
手部構造を示す正面図である。 (2) (1)のC−C線に沿う断面図である。
FIG. 5 (1) is a front view showing a joint structure of a steel pipe according to another embodiment of the present invention. (2) It is sectional drawing which follows CC line of (1).

【図6】(1) 従来例の鋼管の継手部構造を示す正面
図である。 (2) (1)のD−D線に沿う断面図である。
FIG. 6 (1) is a front view showing a joint structure of a conventional steel pipe. (2) It is sectional drawing which follows the DD line of (1).

【図7】(1) 別の従来例の鋼管の継手部構造を示す
左側面図である。 (2) (1)のE−E線に沿う縦断面図である。
FIG. 7 (1) is a left side view showing the joint structure of another conventional steel pipe. (2) It is a longitudinal cross-sectional view which follows the EE line of (1).

【符号の説明】[Explanation of symbols]

1,2 鋼管 3,4 鋼管継手 5 継手板 6 カバー部材 7 基部 8 連結筒体 9 連結板部 10 継手部 11 ボルト穴 14 ボルト穴 15 高力ボルト 16 ナット 1, 2 steel pipe 3, 4 steel pipe joint 5 joint plate 6 cover member 7 base 8 connecting cylinder 9 connecting plate part 10 joint part 11 bolt hole 14 bolt hole 15 high strength bolt 16 nut

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 一側が鋼管の端部に溶接接合される略円
筒形の基部を備え、該基部の中心部に放射状の連結板部
を介して連結筒体を同心に連設すると共に、前記連結筒
体及び連結板部を前記鋼管側の反対側に延在させて、該
連結板部の延在部を継手部としたことを特徴とする鋼管
継手。
1. A base having a substantially cylindrical base which is welded and joined to an end of a steel pipe on one side, and a connecting cylinder body is concentrically connected to a center of the base via a radial connecting plate, A steel pipe joint, wherein a connecting cylinder and a connecting plate portion are extended to a side opposite to the steel pipe side, and an extending portion of the connecting plate portion is a joint portion.
【請求項2】 一対の鋼管の端部を対向して配置し、こ
れら鋼管の端部に各々略円筒形の基部の一側を溶接接合
し、該基部の中心部に各々放射状の連結板部を介して連
結筒体を同心に連設すると共に、前記連結筒体及び連結
板部を各々互いに突き合わせる側に延在させて、該連結
板部の延在部を継手部とし、これら継手部を互いに突き
合わせ、両継手部に各々これを跨ぐ継手板を添接させ、
該継手板に前記継手部を各々ボルト締結してなることを
特徴とする鋼管の継手部構造。
2. A pair of steel pipes are arranged with their ends facing each other, one end of each of the substantially cylindrical bases is welded to each of the ends of the steel pipes, and a radial connecting plate is formed at the center of the base. The connecting cylinders are connected concentrically through the connecting cylinder, and the connecting cylinder and the connecting plate are respectively extended to the side where they abut each other, and the extending portion of the connecting plate is used as a joint. Butted against each other, a joint plate straddling each of these joints is attached to both joints,
A joint structure for steel pipes, wherein the joints are bolted to the joint plate.
【請求項3】 前記基部間に、前記継手部及び継手板を
覆う筒状のカバー部材を取り付けたことを特徴とする請
求項2記載の鋼管継手部構造
3. The joint structure for a steel pipe according to claim 2, wherein a tubular cover member for covering the joint portion and the joint plate is attached between the base portions .
JP14860094A 1994-06-07 1994-06-07 Steel pipe joint and joint structure of steel pipe using the same Expired - Fee Related JP3308395B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14860094A JP3308395B2 (en) 1994-06-07 1994-06-07 Steel pipe joint and joint structure of steel pipe using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14860094A JP3308395B2 (en) 1994-06-07 1994-06-07 Steel pipe joint and joint structure of steel pipe using the same

Publications (2)

Publication Number Publication Date
JPH084125A JPH084125A (en) 1996-01-09
JP3308395B2 true JP3308395B2 (en) 2002-07-29

Family

ID=15456395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14860094A Expired - Fee Related JP3308395B2 (en) 1994-06-07 1994-06-07 Steel pipe joint and joint structure of steel pipe using the same

Country Status (1)

Country Link
JP (1) JP3308395B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100947554B1 (en) * 2007-10-12 2010-03-12 (주)대우건설 Filled steel pipe join system for filled steel pipe girder bridge
KR100945049B1 (en) * 2009-06-11 2010-03-05 (주)리튼브릿지 Structure for steel pipe and concrete
AU2009284717A1 (en) * 2009-12-25 2011-07-21 Mitsubishi Heavy Industries, Ltd. Monopole tower and wind turbine generator having monopole tower
JP2013104172A (en) * 2011-11-10 2013-05-30 Shimizu Corp Steel plate concrete structure
KR102075165B1 (en) * 2012-09-06 2020-02-07 주식회사 포스코 Concrete filled tubular column and connecting structure of the same and construction method thereof

Also Published As

Publication number Publication date
JPH084125A (en) 1996-01-09

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