JP3997276B2 - Protective fence - Google Patents

Protective fence Download PDF

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JP3997276B2
JP3997276B2 JP2003314215A JP2003314215A JP3997276B2 JP 3997276 B2 JP3997276 B2 JP 3997276B2 JP 2003314215 A JP2003314215 A JP 2003314215A JP 2003314215 A JP2003314215 A JP 2003314215A JP 3997276 B2 JP3997276 B2 JP 3997276B2
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guard
pipe
joint
base plate
protective fence
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JP2004150261A (en
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卓 鈴木
輝明 児玉
秀幸 宮崎
圭仙 和田
太一 野本
英治 関口
秀敏 宮内
義行 安川
亮介 安藤
敬司 古賀
泰造 木村
充弘 岡田
伸二郎 樋野
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大東金属株式会社
東日本高速道路株式会社
中日本高速道路株式会社
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Description

この発明は、高架道路などに設ける車止め用の防護柵に関する。   The present invention relates to a guard fence for a car stop provided on an elevated road or the like.

図9に示すように、高速道路などの高架道路20には、車止めとなる背の高い側壁21が設けられている。その側壁21は、図示のRC床板橋の場合、高さHが通常1mに設定されている。   As shown in FIG. 9, an elevated road 20 such as an expressway is provided with a tall side wall 21 that serves as a car stop. In the case of the illustrated RC floor bridge, the side wall 21 is normally set to a height H of 1 m.

このように、道路の両側に背の高い側壁があると、周囲の景観が遮られて味気なく、ドライバーに心理的な圧迫感を与える心配もある。   In this way, if there are tall side walls on both sides of the road, the surrounding scenery is obstructed, and there is also a concern of giving the driver a psychological pressure.

そこで、遮音が不要な地域では側壁21の高さHを低くしてその側壁21上に車止め用の防護柵(高欄)を設けることが検討され、高速道路についても、そのような構造が認められ出した。   Therefore, in areas where sound insulation is not required, it is considered to reduce the height H of the side wall 21 and to provide a guard fence (rail) for stopping the car on the side wall 21, and such a structure is also recognized for expressways. I put it out.

図10〜図12は、高速道路用として検討、設計されている防護柵である。   10 to 12 are protective fences that are studied and designed for highways.

この防護柵1は、高さを60cm程度にした側壁21上に所定間隔で支柱2を立設し、その支柱2の上端に設けたパイプ受け3でガードパイプ4を受け支える。ガードパイプ4は鋼管等を用いており、隣り合うパイプが支柱2による支持部において長手方向に接続される。   The protective fence 1 has support columns 2 standing at predetermined intervals on a side wall 21 having a height of about 60 cm, and receives and supports a guard pipe 4 with a pipe receiver 3 provided at the upper end of the support column 2. The guard pipe 4 uses a steel pipe or the like, and adjacent pipes are connected in the longitudinal direction at a support portion by the support column 2.

図示の防護柵1は、ガードパイプ4の突き合わせ端に継手になるインナースリーブ5’を挿入し、そのインナースリーブ5’と隣り合うガードパイプ4の端部を支柱2上に設けたパイプ受け3にボルト6で固定する方法でガードパイプの接続がなされている。   In the illustrated guard fence 1, an inner sleeve 5 ′ serving as a joint is inserted into the abutting end of the guard pipe 4, and the end of the guard pipe 4 adjacent to the inner sleeve 5 ′ is attached to a pipe receiver 3 provided on a column 2. The guard pipe is connected by a method of fixing with bolts 6.

側壁21の一部を高欄と称される防護柵1に置き換える図10〜図12の構造は、周りの視野が開け、景観の悪化、ドライバーに与える心理的な圧迫が無くなるほか、高架橋道路の軽量化、コスト削減なども可能ならしめる。   The structure shown in FIGS. 10 to 12 in which a part of the side wall 21 is replaced with a guard fence 1 called a railing has a wider view, no deterioration of the landscape, no psychological pressure on the driver, and light weight on the viaduct road. It will be possible to reduce costs and cost.

ところが、これまでに検討されている防護柵1は、ガードパイプ4が車が当たるなどして傷んだ場合、損傷したパイプ4は切断解体して取外すことができるが、交換する新しいガードパイプは、高欄の片側から損傷発生部までのガードパイプ4を全て外さなければ両側のインナースリーブが障害となって元通りに取付けることができず、そのため、無駄な作業が増え、修復に手間取る不具合があった。   However, in the case of the guard fence 1 studied so far, when the guard pipe 4 is damaged due to a car hitting, the damaged pipe 4 can be cut and disassembled, but the new guard pipe to be replaced is If all the guard pipes 4 from one side of the balustrade to the damaged part are not removed, the inner sleeves on both sides become obstructed and cannot be attached to the original state. Therefore, there is a problem that unnecessary work increases and time is required for repair. .

また、ガードパイプ4として丸パイプを使用する構造であったため、ある程度径の太いパイプを使用する必要があり、材料費が高くつくほか、更なる軽量化も図り難いと云う問題があった。   In addition, since the guard pipe 4 has a structure using a round pipe, it is necessary to use a pipe having a diameter that is somewhat thick, which increases the material cost and makes it difficult to further reduce the weight.

この発明は、かかる不具合を解消することを課題としている。   This invention makes it a subject to eliminate this malfunction.

上記の課題を解決するため、この発明においては、所定間隔をあけて立設する支柱間にガードパイプを横架して設け、そのガードパイプを支柱による支持部において長手方向に接続し、その接続を、隣り合うガードパイプの接続端に継手を挿入して、かつ、その継手とガードパイプ端を支柱の上部に設けたパイプ受けにボルトで固定して行うと共に、互いに接続されるガードパイプ間に継手操作用の隙間を設けた防護柵において、前記ガードパイプの端部にパイプ長手方向に入り込む切欠き溝を設け、前記継手の外周に前記切欠き溝からパイプの内部に差し込まれる継手操作具を係止させるための係止部をパイプ長手方向に間隔をあけて複数設けて防護柵を構成したのである。 In order to solve the above-described problems, in the present invention, a guard pipe is provided horizontally between support columns standing at a predetermined interval, and the guard pipe is connected in a longitudinal direction at a support portion by the support columns, and the connection The joint is inserted into the connecting end of the adjacent guard pipes, and the joint and the guard pipe end are fixed to the pipe receiver provided at the upper part of the column with bolts, and between the guard pipes connected to each other. In the protective fence provided with a gap for joint operation, a notch groove that enters the pipe longitudinal direction is provided at the end of the guard pipe, and a joint operation tool that is inserted into the pipe from the notch groove on the outer periphery of the joint. A plurality of locking portions for locking are provided at intervals in the longitudinal direction of the pipe to form a protective fence.

断面楕円形のガードパイプの接続に用いる継手は、ガードパイプの中心部に水平向きに差し込むベースプレートと、そのベースプレートの上下面に間隔をあけてそれぞれ複数立設するリブプレートと、ベースプレート下面のリブプレートに一体化した取付けプレートとで構成し、ベースプレートとリブプレートの各々をガードパイプに適合して嵌まるサイズにし、前記取付けプレートに固定用のボルトをねじ込むねじ孔を設けたものが好ましい。   The joint used to connect the guard pipe having an elliptical cross section is composed of a base plate that is horizontally inserted into the center of the guard pipe, a plurality of rib plates that are erected on the upper and lower surfaces of the base plate, and a rib plate on the lower surface of the base plate. It is preferable that each of the base plate and the rib plate has a size that fits and fits the guard pipe, and a screw hole into which a fixing bolt is screwed is provided in the mounting plate.

ガードパイプの中心部に水平向きにして差し込むベースプレートと、そのベースプレートの上下面にそれぞれ両側端を固着して設ける、端面視で両側部が起立し、両側部に連なる中間部は幅方向途中に伸縮吸収用のU字曲げ部を有して山形をなすように曲げ加工されたブリッジ状の補助枠とで構成し、ベースプレートと補助枠の各々をガードパイプの内側にほぼ適合して嵌まるサイズにし、補助枠に固定用のボルトをねじ込むねじ孔を設けた構造の継手を採用するとなお好ましい。この継手のブリッジ状の補助枠は、端面視で両側部が起立し、両側部に連なる中間部はガードパイプの内面にほぼ沿うように曲げ加工された形状のものに置き換えることができる。これらの補助枠はバネ性のある板材で形成されたものが好ましい。   A base plate that is inserted horizontally into the center of the guard pipe, and both ends are fixed to the top and bottom surfaces of the base plate. Both sides stand up in end view, and the middle part that extends from both sides stretches in the middle of the width direction. It consists of a bridge-shaped auxiliary frame that has a U-shaped bend for absorption and is bent so as to form a chevron, and each base plate and auxiliary frame are sized to fit almost inside the guard pipe. It is more preferable to employ a joint having a structure in which a screw hole for screwing a fixing bolt is provided in the auxiliary frame. The bridge-like auxiliary frame of this joint can be replaced with a shape in which both side portions stand in an end view and the intermediate portion connected to both side portions is bent so as to substantially follow the inner surface of the guard pipe. These auxiliary frames are preferably formed of a spring plate.

また、ガードパイプ間に生じさせた隙間は、着脱自在のカバープレートを設けて覆うのがよい。   Further, it is preferable to cover the gap created between the guard pipes by providing a removable cover plate.

このほか、この発明の防護柵は、外側に丈の高い第2防護柵を一体化して設けるとより好ましいものになる。   In addition, the protective fence according to the present invention is more preferable when the second protective fence having a high height is integrally provided on the outside.

この発明の防護柵は、互いに接続されるガードパイプ間にパイプ内に挿入した継手の一部を外部に露出させる隙間を設けたので、露出した継手を外部から操作して抜き差しすることができ、これにより損傷したガードパイプの交換を他のガードパイプを外さずに行うことが可能になり、損傷したガードパイプの交換作業も簡略化される。   The guard fence of the present invention is provided with a gap that exposes a part of the joint inserted in the pipe between the guard pipes connected to each other, so that the exposed joint can be operated from the outside and inserted and removed. This makes it possible to replace a damaged guard pipe without removing other guard pipes, and simplifies the replacement of damaged guard pipes.

ガードパイプの端部に切欠き溝を設け、さらに、前記継手の外周に前記切欠き溝からパイプの内部に差し込まれた継手操作具を係止させるための係止部をパイプ長手方向に間隔をあけて複数設けたものは、切欠き溝によって継手操作用の実質隙間が広げられ、また、操作具を係止させる係止部を継手に設けているため、ガードパイプ間に設ける隙間が小さくても継手の抜き差しを支障無く行なうことができる。   A notch groove is provided at the end of the guard pipe, and further, a locking portion for locking the joint operation tool inserted into the pipe from the notch groove on the outer periphery of the joint is spaced in the longitudinal direction of the pipe. In the case where a plurality of openings are provided, a substantial gap for joint operation is widened by the notch groove, and a locking portion for locking the operation tool is provided in the joint, so the gap provided between the guard pipes is small. The joint can be inserted and removed without any trouble.

また、車止めとして機能させるガードパイプは、横荷重に対しては高い強度が要求されるが、縦荷重(垂直方向の荷重)に対する強度はさほど要求されない。断面楕円形のガードパイプを採用したものは、横荷重に対する要求強度を丸パイプよりも小サイズのパイプ(周長の短いパイプ)で確保することができ、丸パイプを用いる防護柵よりも材料費を削減でき、ガードパイプのより一層の軽量化も図れる。   In addition, a guard pipe that functions as a vehicle stop is required to have a high strength against a lateral load, but is not required to have a high strength against a vertical load (a load in a vertical direction). The use of a guard pipe with an elliptical cross section can ensure the required strength for lateral loads with a pipe of a smaller size (a pipe with a shorter circumference) than the round pipe, and the material cost is higher than the protective fence using a round pipe. And the weight of the guard pipe can be further reduced.

なお、上記において好ましいとした継手、即ち、ベースプレートと2つの補助枠から成る継手は、ベースプレートが横荷重に対する補強材となり、楕円形のインナースリーブを継手として使用するものに比べてパイプ接続部の強度が高まる。ベースプレート、リブプレート、取付けプレートの3者から成る継手も、ベースプレートが横荷重に対する補強材、リブプレートが縦荷重に対する補強材となり、楕円形のインナースリーブを継手として使用するものに比べてパイプ接続部の強度が高まる。   It should be noted that the joint preferred in the above, that is, the joint comprising the base plate and the two auxiliary frames, has a strength of the pipe connection portion as compared with the joint in which the base plate serves as a reinforcing material against the lateral load and an elliptical inner sleeve is used as the joint. Will increase. The joint consisting of the base plate, rib plate, and mounting plate also has a pipe connection part compared to the base plate that serves as a reinforcement for lateral loads and the rib plate serves as a reinforcement for longitudinal loads, and an elliptical inner sleeve is used as a joint. Increases the strength.

また、これ等の継手は製作し易く、かつ、ガードパイプとの適合性も確保し易い。前者の継手は、補助枠をバネ性のある板材で形成して弾性変形可能となし、ガードパイプに対する嵌まりが悪いときに補助枠を弾性変形させてその嵌まりの悪さを解消することができる。また、後者の継手はガードパイプに対する嵌まりが悪ければベースプレートやリブプレートの縁を削ってサイズを簡単に修正することができる。   Moreover, these joints are easy to manufacture and easy to ensure compatibility with the guard pipe. In the former joint, the auxiliary frame is formed of a springy plate material and can be elastically deformed. When the fitting to the guard pipe is poor, the auxiliary frame can be elastically deformed to eliminate the poor fitting. . In addition, if the fitting of the latter joint is poor with respect to the guard pipe, the size can be easily corrected by scraping the edges of the base plate or the rib plate.

なお、ガードパイプ間の隙間を覆うカバープレートは、パイプ接続部の体裁を向上させる。   In addition, the cover plate which covers the clearance gap between guard pipes improves the appearance of a pipe connection part.

また、第2防護柵は、車両の積荷などがガードパイプを乗り越えて高架道路から落下するのを防止し、防護の信頼性を高める。   In addition, the second protective fence prevents the cargo of the vehicle from falling over the guard pipe over the guard pipe, thereby improving the reliability of the protection.

以下、この発明の実施形態を図1乃至図8に基づいて説明する。例示の防護柵Aは、複合構造の柵であって、車止めとなす第1防護柵1と、車両の積荷などの落下を防止する丈の高い第2防護柵10とから成る。   Hereinafter, embodiments of the present invention will be described with reference to FIGS. The illustrated guard fence A is a fence having a composite structure, and includes a first guard fence 1 serving as a car stop and a second guard fence 10 having a high length for preventing a vehicle load or the like from falling.

第1防護柵1は、高架道路などの側部に所定間隔をあけて立設する支柱2と、各支柱間に横架する断面楕円形の鋼管製のガードパイプ4と、このガードパイプ4の端部に挿入する継手5と、固定用ボルト6と、カバープレート7とで構成される。   The first protective fence 1 is composed of a support column 2 standing on a side of an elevated road or the like, a guard pipe 4 made of a steel pipe having an elliptical cross section extending horizontally between the support columns, and the guard pipe 4 A joint 5 to be inserted into the end, a fixing bolt 6 and a cover plate 7 are included.

また、第2防護柵10は、外枠11と、枠の内側に張った金属ネット12とから成る。この第2防護柵10は、図2に示す連結金具13を用いて支柱2に固定され、第1防護柵1の外側に設置される。   The second protective fence 10 includes an outer frame 11 and a metal net 12 stretched inside the frame. The second guard fence 10 is fixed to the support column 2 using a connecting fitting 13 shown in FIG. 2 and is installed outside the first guard fence 1.

支柱2は、上部にパイプ受け3を有し、そのパイプ受け3でガードパイプ4の端部を受け支える。ガードパイプ4は、楕円の長軸が水平向きとなる姿勢にしており、継手5を端部に抜き差し自在に挿入し、互いに接続する2本のパイプ間に隙間g(図1、図3参照)を生じさせて接続端を向かい合わせにする。   The support column 2 has a pipe receiver 3 at the upper portion, and the pipe receiver 3 receives and supports the end of the guard pipe 4. The guard pipe 4 is in a posture in which the long axis of the ellipse is horizontally oriented, and the joint 5 is detachably inserted into the end, and a gap g is formed between the two pipes connected to each other (see FIGS. 1 and 3). Cause the connection ends to face each other.

ガードパイプ4の端部には、パイプ長手方向に入り込む切欠き溝4aを設けている(図6参照)。この切欠き溝4aは、ドライバー等の継手操作具を差し込める大きさにしており、パイプ間隙間gの実質寸法を増大させる。なお、この切欠き溝4aは、外部から見えにくくて雨水等もかかり難い位置、例えばガードパイプ4の下部に設けるのがよい。   The end of the guard pipe 4 is provided with a notch groove 4a that enters the longitudinal direction of the pipe (see FIG. 6). The notch groove 4a is sized so that a joint operating tool such as a screwdriver can be inserted, and increases the substantial dimension of the inter-pipe gap g. The cutout groove 4a is preferably provided at a position where it is difficult to see from the outside and where rainwater or the like is not easily applied, for example, at the lower portion of the guard pipe 4.

継手5は、図5(a)に示すように、ベースプレート5aと、そのベースプレート5aの上下面にそれぞれ両側端を溶接して設ける補助枠5bとから成る。補助枠5bは、図4〜図6に示すもの、即ち、端面視で両側部が起立し、両側部に連なる中間部は幅方向途中(図は中央部)に伸縮吸収用のU字曲げ部5cを有して山形をなすように曲げ加工されてブリッジ状をなすものが寸法誤差の吸収性に優れて好ましいが、図13に示すように、端面視で両側部が起立し、両側部に連なる中間部はガードパイプ4の内面にほぼ添うように曲げ加工された形状のものでもよい。   As shown in FIG. 5 (a), the joint 5 includes a base plate 5a and auxiliary frames 5b that are provided by welding both side ends to the upper and lower surfaces of the base plate 5a. The auxiliary frame 5b is as shown in FIGS. 4 to 6, that is, both side portions stand up in an end view, and an intermediate portion connected to both side portions is a U-shaped bent portion for absorbing expansion and contraction in the middle in the width direction (the center portion in the figure). It is preferable to have a bridge shape by being bent so as to form a chevron with 5c, but it has excellent absorbability of dimensional errors. However, as shown in FIG. The intermediate portion that is continuous may have a shape that is bent so as to substantially follow the inner surface of the guard pipe 4.

例示の継手5は、ベースプレート5aをステンレス板で、補助枠5bをバネ性のある金属板で各々形成しており、補助枠5bを弾性変形させてその枠の高さを変化させることができる。この継手5は、ベースプレート5aと補助枠5bをガードパイプ4にほぼ適合して嵌まるサイズにしている。補助枠5bに設けるU字曲げ部5cは、複数にしてもよい。この補助枠5bには、ボルト6をねじ込むねじ孔が複数設けられている。図示の継手5は、そのねじ孔を、補助枠5bの内面に市販のナット5d(図4参照)を溶接して生じさせており、タップ加工を必要としない。補助枠5bにはナット5dに対応するボルト孔をあけている。   In the illustrated joint 5, the base plate 5a is formed of a stainless steel plate, and the auxiliary frame 5b is formed of a spring metal plate, and the auxiliary frame 5b can be elastically deformed to change the height of the frame. The joint 5 is sized so that the base plate 5a and the auxiliary frame 5b are fitted to the guard pipe 4 so as to fit. A plurality of U-shaped bent portions 5c provided on the auxiliary frame 5b may be provided. The auxiliary frame 5b is provided with a plurality of screw holes into which the bolts 6 are screwed. In the illustrated joint 5, the screw hole is generated by welding a commercially available nut 5 d (see FIG. 4) to the inner surface of the auxiliary frame 5 b and does not require tapping. Bolt holes corresponding to the nuts 5d are formed in the auxiliary frame 5b.

また、この補助枠5bには、前述の切欠き溝4aに対応した位置に、ドライバー等の操作具を係止させる係止部5g(図4〜図6参照)をパイプ長手方向に適当な間隔をあけて複数設けている。操作具を係止させる係止部5gは、図5(b)に示す貫通小孔や、図5(c)に示す凹部等でよい。切欠き溝4aの位置から楕円ガードパイプ4の内部に差し込んだドライバー等の操作具を係止部5gに係止させて継手5を移動させると継手5の抜き差しがし易い。   Further, the auxiliary frame 5b is provided with a locking portion 5g (see FIGS. 4 to 6) for locking an operation tool such as a driver at a position corresponding to the above-described notch groove 4a. A plurality are provided. The locking portion 5g for locking the operating tool may be a through hole shown in FIG. 5B, a recess shown in FIG. When an operation tool such as a screwdriver inserted into the elliptical guard pipe 4 from the position of the notch groove 4a is engaged with the engagement portion 5g and the joint 5 is moved, the joint 5 can be easily inserted and removed.

継手5は、図7に示すように、ベースプレート5aと、そのベースプレートの上下面に適当な間隔をあけてそれぞれ複数溶接して立設するリブプレート5eと、下面側のリブプレートに一体化して設ける取付けプレート5fとから成るものにしてもよい。取付けプレート5fには、ボルト6をねじ込むねじ孔を設けておく。図示の継手5は、そのねじ孔を、取付けプレート5fに市販のナット5d(図4参照)を溶接して生じさせており、従って、これもタップ加工を必要としない。   As shown in FIG. 7, the joint 5 is provided integrally with a base plate 5 a, a rib plate 5 e erected by welding a plurality of each of the base plate on the upper and lower surfaces of the base plate, and a rib plate on the lower surface side. The mounting plate 5f may be used. A screw hole into which the bolt 6 is screwed is provided in the mounting plate 5f. In the illustrated joint 5, the screw hole is formed by welding a commercially available nut 5 d (see FIG. 4) to the mounting plate 5 f, and therefore this also does not require tapping.

この図7の継手5を採用する場合にも、図6に示した切欠き溝4aを楕円ガードパイプ4の端部に設け、その切欠き溝4aに対応させた係止部5gを継手5にパイプ長手方向に適当な間隔を開けて複数設けておくのがよい。   Even when the joint 5 of FIG. 7 is adopted, the notch groove 4a shown in FIG. 6 is provided at the end of the elliptical guard pipe 4, and a locking part 5g corresponding to the notch groove 4a is provided on the joint 5. It is preferable to provide a plurality of them at appropriate intervals in the longitudinal direction of the pipe.

パイプ受け3とガードパイプ4には、継手5に設けたねじ孔(ナット5d)と対応する位置にボルト孔8、9を設けており、その孔に外部からボルト6を挿入し、そのボルト6をナット5dにねじ込んで楕円ガードパイプ4と継手5をパイプ受け3に固定する。   The pipe receiver 3 and the guard pipe 4 are provided with bolt holes 8 and 9 at positions corresponding to the screw holes (nuts 5d) provided in the joint 5, and the bolts 6 are inserted into the holes from the outside. Then, the oval guard pipe 4 and the joint 5 are fixed to the pipe receiver 3.

カバープレート7は、支柱2上にボルトで固定し、覆い部7aを隣り合うガードパイプ間に入り込ませて継手5の露出部を覆い隠す。このカバープレート7は、接続部の体裁を向上させるが必須の要素ではない。   The cover plate 7 is fixed on the support column 2 with bolts, and covers the exposed portion of the joint 5 by covering the cover portion 7a between adjacent guard pipes. The cover plate 7 improves the appearance of the connecting portion, but is not an essential element.

このように構成した防護柵Aは、どこかのガードパイプが損傷した場合、そのガードパイプ4の両側のカバープレート7を外し、ボルト6も外して隙間gの位置で継手5を操作し、損傷したガードパイプ4から継手5を抜く。そして損傷したガードパイプを新しいガードパイプと入れ替え、上記と逆の手順を経て交換作業を終了する。   The guard fence A constructed in this way is damaged by operating the joint 5 at the position of the gap g by removing the cover plates 7 on both sides of the guard pipe 4 and removing the bolts 6 if any guard pipe is damaged. The joint 5 is removed from the guard pipe 4 that has been removed. Then, the damaged guard pipe is replaced with a new guard pipe, and the replacement operation is completed through a procedure reverse to the above.

なお、隙間gをガードパイプ4に対する継手5の挿入長さよりも大きくすれば、その隙間を利用して継手5を動かさずにガードパイプ4を外すことができるが、図示の防護柵のように、隙間gをガードパイプに対する継手挿入長さよりも小さくして外観の悪化を抑える方法を採るとスペース上の制約が生じて継手5の抜き差しが難しくなる。前述の切欠き溝4aと係止部5gは、このときに有効性を発揮し、隙間gを小さくしても継手5を容易に確実に抜き差しすることを可能ならしめる。   If the gap g is larger than the insertion length of the joint 5 with respect to the guard pipe 4, the guard pipe 4 can be removed without moving the joint 5 using the gap. If the gap g is made smaller than the joint insertion length with respect to the guard pipe and the method of suppressing the deterioration of the external appearance is adopted, a space restriction occurs and it becomes difficult to insert and remove the joint 5. The notch groove 4a and the locking portion 5g described above are effective at this time, and it is possible to easily and reliably insert and remove the joint 5 even if the gap g is reduced.

隙間gをひとつおきの接続部に設け、隙間無くガードパイプを突き合わせた接続部と隙間gのある接続部を交互に配置する構造でも、隙間gを設けた側にガードパイプをずらせば隙間の無かった位置に隙間を生じさせて隙間が無かった接続部の継手を外部から操作することが可能であり、損傷したガードパイプの交換を他の健全なガードパイプを外さずに実施できる。この構造は、カバープレートの使用数とそのプレートの脱着の手間を半減できる利点がある。   Even in the structure in which the gaps g are provided in every other connecting part and the connecting parts where the guard pipes are abutted without gaps and the connecting parts with the gaps g are alternately arranged, if the guard pipe is shifted to the side where the gaps g are provided, there is no gap. It is possible to operate the joint of the connecting portion where there is no gap by generating a gap at the position, and the damaged guard pipe can be replaced without removing another healthy guard pipe. This structure has an advantage that the number of cover plates used and the time required for attaching and detaching the plates can be halved.

以上、断面楕円形の好ましいガードパイプを採用したケースを例に挙げて説明したが、使用するガードパイプは図14に示すような丸パイプであってもよく、この場合の継手5は、断面円形のインナースリーブでよい。   The case where the preferred guard pipe having an elliptical cross section has been described above as an example, but the guard pipe to be used may be a round pipe as shown in FIG. 14, and the joint 5 in this case has a circular cross section. The inner sleeve can be used.

実施形態の防護柵のガードパイプ接続部の正面図Front view of guard pipe connection part of protective fence of embodiment 図1のII−II線に沿った断面図Sectional view along the line II-II in FIG. ガードパイプ接続部の平面図Plan view of guard pipe connection 図2の一部を拡大した図An enlarged view of a part of FIG. (a)は継手の斜視図、(b)、(c)は係止部の一例を示す断面図(A) is a perspective view of a joint, (b), (c) is sectional drawing which shows an example of a latching | locking part. ガードパイプ接続部の分解斜視図Exploded perspective view of guard pipe connection 継手の他の実施形態の使用例を示す断面図Sectional drawing which shows the usage example of other embodiment of a coupling 図7の継手の斜視図7 is a perspective view of the joint of FIG. RC床板橋の概要を示す斜視図Perspective view showing the outline of RC floor board bridge 側壁の一部を防護柵で代替したRC床板橋の斜視図Perspective view of RC floor bridge with part of the side wall replaced by a protective fence 図10の防護柵の側面図Side view of the protective fence in FIG. 同上の防護柵のパイプ接続部の断面図Sectional view of the pipe connection of the protective fence 図5の継手の変形例を示す断面図Sectional drawing which shows the modification of the coupling of FIG. 他の実施形態の防護柵のガードパイプ接続部の断面図Sectional drawing of the guard pipe connection part of the guard fence of other embodiment

符号の説明Explanation of symbols

A 複合構造防護柵
1 第1防護柵
2 支柱
3 パイプ受け
4 ガードパイプ
4a 切欠き溝
5 継手
5a ベースプレート
5b 補助枠
5c U字曲げ部
5d ナット
5e リブプレート
5f 取付けプレート
5g 係止部
6 ボルト
7 カバープレート
7a 覆い部
8、9 ボルト孔
10 第2防護柵
11 外枠
12 金属ネット
13 連結金具
g 隙間
A Combined structure guard fence 1 First guard fence 2 Strut 3 Pipe receiver 4 Guard pipe 4a Notch groove
5 Joint 5a Base plate 5b Auxiliary frame 5c U-bent part 5d Nut 5e Rib plate 5f Mounting plate 5g Locking part 6 Bolt 7 Cover plate 7a Cover part 8, 9 Bolt hole 10 Second protective fence 11 Outer frame 12 Metal net 13 Connection Bracket g Clearance

Claims (8)

所定間隔をあけて立設する支柱間にガードパイプを横架して設け、そのガードパイプを支柱による支持部において長手方向に接続し、その接続を、隣り合うガードパイプの接続端に継手を挿入して、かつ、その継手とガードパイプ端を支柱の上部に設けたパイプ受けにボルトで固定して行うと共に、互いに接続されるガードパイプ間に継手操作用の隙間を設けた防護柵において、前記ガードパイプの端部にパイプ長手方向に入り込む切欠き溝を設け、前記継手の外周に前記切欠き溝からパイプの内部に差し込まれる継手操作具を係止させるための係止部をパイプ長手方向に間隔をあけて複数設けたことを特徴とする防護柵。 A guard pipe is installed in a horizontal position between the pillars standing upright at a predetermined interval, and the guard pipe is connected in the longitudinal direction at the support part by the pillar, and the joint is inserted into the connection end of the adjacent guard pipe. In addition, the joint and the guard pipe end are fixed to the pipe receiver provided on the upper part of the column with bolts, and the guard fence provided with a gap for joint operation between the guard pipes connected to each other , A notch groove that enters the pipe longitudinal direction is provided at the end of the guard pipe, and a locking portion for locking a joint operation tool that is inserted into the pipe from the notch groove is provided in the pipe longitudinal direction on the outer periphery of the joint. A protective fence characterized by the provision of a plurality at intervals . 前記ガードパイプを断面楕円形のパイプで構成し、その楕円のガードパイプを楕円の長軸を水平向きにして支柱間に横架するようにした請求項1に記載の防護柵。 The guard fence according to claim 1 , wherein the guard pipe is formed of an elliptical cross section, and the elliptical guard pipe is horizontally placed between the columns with the major axis of the ellipse being horizontally oriented. 前記継手を、ガードパイプの中心部に水平向きにして差し込むベースプレートと、そのベースプレートの上下面にそれぞれ両側端を固着して設ける、端面視で両側部が起立し、両側部に連なる中間部は幅方向途中に伸縮吸収用のU字曲げ部を有して山形をなすように曲げ加工されたブリッジ状の補助枠とで構成し、ベースプレートと補助枠の各々をガードパイプの内側にほぼ適合して嵌まるサイズにし、補助枠に前記ボルトをねじ込むねじ孔を設けた請求項1または2に記載の防護柵。 A base plate is inserted horizontally in the center of the guard pipe, and both side ends are fixed to the upper and lower surfaces of the base plate. Both side portions stand up in end view, and the intermediate portion connected to both side portions is wide. It consists of a bridge-shaped auxiliary frame that has a U-shaped bending part for stretching and absorbing in the middle of the direction and is bent so as to form a mountain shape, and each of the base plate and auxiliary frame almost fits inside the guard pipe. The protective fence according to claim 1 or 2 , wherein the guard fence is provided with a screw hole into which the bolt is screwed into the auxiliary frame. 前記継手を、ガードパイプの中心部に水平向きにして差し込むベースプレートと、そのベースプレートの上下面にそれぞれ両側端を固着して設ける、端面視で両側部が起立し、両側部に連なる中間部はガードパイプの内面にほぼ沿うように曲げ加工されたブリッジ状の補助枠とで構成し、ベースプレートと補助枠の各々をガードパイプの内側にほぼ適合して嵌るサイズにし、補助枠に前記ボルトをねじ込むねじ孔を設けた請求項1または2に記載の防護柵。 A base plate for horizontally inserting the joint into the center portion of the guard pipe, and both side ends are fixed to the upper and lower surfaces of the base plate. Both side portions stand in an end view, and an intermediate portion connected to both side portions is a guard. A screw that is configured with a bridge-shaped auxiliary frame that is bent along the inner surface of the pipe. The base plate and the auxiliary frame are sized to fit inside the guard pipe, and the bolts are screwed into the auxiliary frame. The protective fence according to claim 1 or 2 , wherein a hole is provided. 前記補助枠をバネ性のある板材で形成した請求項3又は4に記載の防護柵。 The protective fence according to claim 3 or 4 , wherein the auxiliary frame is formed of a spring plate. 前記継手を、ガードパイプの中心部に水平向きにして差し込むベースプレートと、そのベースプレートの上下面に間隔をあけてそれぞれ複数立設するリブプレートと、ベースプレート下面のリブプレートに一体化した取付けプレートとで構成し、ベースプレートとリブプレートの各々をガードパイプの内側にほぼ適合して嵌まるサイズにし、前記取付けプレートに前記ボルトをねじ込むねじ孔を設けた請求項1または2に記載の防護柵。 A base plate into which the joint is inserted horizontally in the center of the guard pipe, a plurality of rib plates erected on the upper and lower surfaces of the base plate, and a mounting plate integrated with the rib plate on the lower surface of the base plate 3. The protective fence according to claim 1 or 2 , wherein each of the base plate and the rib plate is sized to fit substantially inside the guard pipe, and a screw hole into which the bolt is screwed is provided in the mounting plate. ガードパイプ間の隙間を覆う着脱自在のカバープレートを設けた請求項1乃至6のいずれかに記載の防護柵。 The protective fence in any one of Claims 1 thru | or 6 which provided the detachable cover plate which covers the clearance gap between guard pipes. 請求項1乃至7のいずれかに記載の防護柵の外側に、その防護柵よりも丈の高い第2防護柵を一体化して設けた複合構造防護柵。 A composite structure protective fence in which a second protective fence having a height higher than that of the protective fence is integrated with the outside of the protective fence according to any one of claims 1 to 7 .
JP2003314215A 2002-10-11 2003-09-05 Protective fence Expired - Fee Related JP3997276B2 (en)

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JP2003314215A JP3997276B2 (en) 2002-10-11 2003-09-05 Protective fence

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JP5255811B2 (en) * 2007-10-16 2013-08-07 神鋼建材工業株式会社 Beam replacement method for guard pipe and guard pipe
JP2013142231A (en) * 2012-01-10 2013-07-22 Sekisui Jushi Co Ltd Guard fence device
JP6231853B2 (en) * 2012-12-03 2017-11-15 積水樹脂株式会社 Guard fence and its assembly method
KR101700417B1 (en) * 2016-05-19 2017-01-26 주식회사 태백 Guard fence for vehicle

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