JP2018199934A - Stone fall guard fence - Google Patents

Stone fall guard fence Download PDF

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JP2018199934A
JP2018199934A JP2017104738A JP2017104738A JP2018199934A JP 2018199934 A JP2018199934 A JP 2018199934A JP 2017104738 A JP2017104738 A JP 2017104738A JP 2017104738 A JP2017104738 A JP 2017104738A JP 2018199934 A JP2018199934 A JP 2018199934A
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wire mesh
wire
rock
protection fence
wire net
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JP6860908B2 (en
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文彦 菅
Fumihiko Suga
文彦 菅
田中　淳一
Junichi Tanaka
淳一 田中
武良 西島
Takeyoshi Nishijima
武良 西島
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Chikuho Wirenetting Industry Co Ltd
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Chikuho Wirenetting Industry Co Ltd
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Abstract

To provide a stone fall guard fence capable of suppressing expansion or breakage of a mesh size of a wire net due to first stone fall, resulting in dealing with subsequent stone fall with reliability.SOLUTION: It is provided with a pole 1 installed on a slanting surface, and a wire net 2 stretched out between the poles 1. The wire net 2 has an expansion margin part 8 which is formed by drawing a folding bar steel 7 toward the side of the pole 1 together with the wire net 2 to fold the end of the wire net 2. When a falling stone collides with the wire net 2, the wire net 2 expands by the length of the expansion margin part 8.SELECTED DRAWING: Figure 1

Description

この発明は、落石防護柵、特に、金網に伸び代部を設けることによって、最初の落石による金網の目の広がりや破れを抑制することができる結果、続いて起こる落石に確実に対応することができる落石防護柵に関するものである。   According to the present invention, by providing an extension allowance portion for the falling rock protection fence, in particular, the wire mesh, it is possible to suppress the spread and breakage of the wire mesh due to the first falling rock, and as a result, it is possible to reliably cope with the subsequent falling rock. It relates to a rockfall protection fence that can be made.

道路等への落石を防止するために、斜面に落石防護柵を設置することは一般的に行われている。   In order to prevent falling rocks on roads and the like, it is common practice to install rockfall protection fences on slopes.

落石防護柵の一例を、図面を参照しながら説明する。以下、この落石防護柵を従来落石防護柵という。   An example of a rockfall protection fence will be described with reference to the drawings. Hereinafter, this rock fall protection fence will be referred to as a conventional rock fall protection fence.

図４は、従来落石防護柵を示す概略斜視図である。   FIG. 4 is a schematic perspective view showing a conventional rock fall protection fence.

図４において、１１は、斜面１２に所定間隔をあけて構築された支柱、１３は、支柱１１の上端部と山側（Ｍ）の斜面１２との間に張られた山側ワイヤ、１４は、支柱１１の上端部と谷側（Ｖ）の斜面１２との間に張られた谷側ワイヤ、１５は、支柱１１間に張られた、落石を受け止める金網である。   In FIG. 4, 11 is a support column constructed with a predetermined interval on the slope 12, 13 is a mountain wire stretched between the upper end of the support 11 and the mountain side (M) slope 12, and 14 is a support column. A trough-side wire 15 stretched between the upper end of 11 and the slope 12 on the trough side (V) is a wire net that stretches between the columns 11 and catches falling rocks.

上述した従来落石防護柵によれば、落石は、金網１５により受け止められる結果、石が道路等に落下することを防止することができる。この際、支柱１１は、山側ワイヤ１３により引っ張られているので、支柱１１が谷側（Ｖ）に倒れるおそれはない。   According to the conventional rockfall protection fence described above, the rockfall can be prevented from falling on a road or the like as a result of being received by the wire mesh 15. At this time, since the support 11 is pulled by the mountain-side wire 13, there is no possibility that the support 11 falls to the valley side (V).

また、斜面１１からの落石が金網１５に衝突すると、山側ワイヤ１３に引張力が作用し、その反動で支柱１１には、支柱１１が山側（Ｍ）に倒れ込む力が作用するが、支柱１１は、谷側ワイヤ１４により引っ張られているので、支柱１１が山側（Ｍ）に倒れ込むおそれはない。   Moreover, when the falling rock from the slope 11 collides with the wire mesh 15, a tensile force acts on the mountain wire 13, and the reaction force causes the column 11 to fall to the mountain side (M). Since it is pulled by the valley side wire 14, there is no possibility that the column 11 falls to the mountain side (M).

しかしながら、従来落石防護柵によれば、支柱１１間に張られている金網１５に伸び代部がないので、最初の落石の程度が大きいと、金網１５の目が大きく広がったり、金網１５が破れたりすることがあった。   However, according to the conventional rock fall protection fence, the wire mesh 15 stretched between the pillars 11 does not have a margin for extension. Therefore, if the first rock fall is large, the mesh of the wire mesh 15 widens or the wire mesh 15 is broken. Sometimes happened.

このように、最初の落石により金網１５の目が大きく広がったり、金網１５が破れたりすると、続いて起こる落石に対応することができないといった問題があった。   As described above, there is a problem that if the mesh of the metal mesh 15 is widened by the first rockfall or the wire mesh 15 is torn, it cannot cope with the subsequent rockfall.

従って、この発明の目的は、支柱間に張られる金網に伸び代部を設けることによって、最初の落石による金網の目の広がりや破れを抑制することができる結果、続いて起こる落石に確実に対応することができる落石防護柵を提供することにある。   Therefore, the object of the present invention is to provide an extension margin in the wire mesh stretched between the columns, thereby suppressing the spread and breakage of the wire mesh caused by the first fallen rock, and reliably dealing with the subsequent fallen rock. It is to provide a rock fall protection fence that can be done.

この発明は、上記目的を達成するためになされたものであり、下記を特徴とする。   The present invention has been made to achieve the above object, and is characterized by the following.

請求項１に記載の発明は、落石を防止するために斜面に構築される落石防護柵において、前記斜面に設置される支柱と、前記支柱間に張り渡される金網とを備え、前記金網は、伸び代部を有し、落石が前記金網に衝突した際に、前記金網は、前記伸び代部の長さ分だけ伸びることに特徴を有するものである。   The invention according to claim 1 is a rockfall protection fence constructed on a slope in order to prevent falling rocks, and includes a column installed on the slope and a wire mesh stretched between the columns, It has an extension allowance, and when the falling rock collides with the wire mesh, the wire mesh extends by the length of the extension allowance.

請求項２に記載の発明は、請求項１に記載の発明において、前記伸び代部は、前記金網の少なくとも一方の端部を前記支柱側に引き寄せることにより形成され、前記伸び代部は、前記支柱に仮止め部材を介して仮止めされ、落石が前記金網に衝突した際に、前記仮止め部材が破断して、前記金網が前記伸び代部の長さ分だけ伸びることに特徴を有するものである。   The invention according to claim 2 is the invention according to claim 1, wherein the extension allowance is formed by pulling at least one end of the wire mesh toward the column, and the extension allowance is Temporarily fixed to a support through a temporary fixing member, and when the falling stone collides with the wire mesh, the temporary fixing member is broken, and the wire mesh extends by the length of the extension allowance. It is.

請求項３に記載の発明は、請求項２に記載の発明において、前記伸び代部は、前記金網の端部に差し込んだ折返し用棒鋼を、前記金網とともに前記支柱側に引き寄せることにより形成され、前記折返し用棒鋼は、前記支柱に前記仮止め部材を介して仮止めされていることに特徴を有するものである。   The invention according to claim 3 is the invention according to claim 2, wherein the extension allowance portion is formed by drawing the turning bar steel inserted into the end portion of the wire mesh together with the wire mesh toward the support column side, The folding steel bar is characterized in that it is temporarily fixed to the column via the temporary fixing member.

請求項４に記載の発明は、請求項２または３に記載の発明において、前記仮止め部材は、結束バンドからなっていることに特徴を有するものである。   The invention described in claim 4 is characterized in that, in the invention described in claim 2 or 3, the temporary fixing member comprises a binding band.

この発明によれば、金網に伸び代部を設けることによって、最初の落石による金網の目の広がりや破れを抑制することができる結果、続いて起こる落石に確実に対応することができる。   According to the present invention, by providing the stretch allowance portion in the wire mesh, it is possible to suppress the spread and breakage of the wire mesh due to the first rock fall, and as a result, it is possible to reliably cope with the subsequent rock fall.

この発明の落石防護柵において、落石が金網に衝突する前の状態を示す部分斜視図である。In the rock fall protection fence of this invention, it is a fragmentary perspective view which shows the state before a rock fall collides with a wire mesh. この発明の落石防護柵において、落石が金網に衝突した後の状態を示す部分斜視図である。In the rock fall protection fence of this invention, it is a fragmentary perspective view which shows the state after a rock fall collides with a wire mesh. 金網とワイヤの他の取付態様を示す正面図である。It is a front view which shows the other attachment aspect of a wire mesh and a wire. 従来落石防護柵を示す概略斜視図である。It is a schematic perspective view which shows the conventional rock fall protection fence.

この発明の落石防護柵の一実施態様を、図面を参照しながら説明する。   One embodiment of the rock fall protection fence of the present invention will be described with reference to the drawings.

図１は、この発明の落石防護柵において、落石が金網に衝突する前の状態を示す部分斜視図、図２は、この発明の落石防護柵において、落石が金網に衝突した後の状態を示す部分斜視図である。   FIG. 1 is a partial perspective view showing a state before falling rocks collide with a wire mesh in the falling rock protection fence of the present invention, and FIG. 2 shows a state after falling rocks collide with the wire mesh in the falling rock protection fence of the present invention. It is a fragmentary perspective view.

図１および図２において、１は、斜面に設置された、フランジ１ａとウエッブ１ｂとが形成されたＨ形鋼からなる支柱、２は、支柱１間に張り渡された菱形金網である。なお、金網は、菱形金網に限定されない。金網２の両端（一方端のみ図示）には、固定用棒鋼３が挿通され、固定用棒鋼３は、Ｕボルト・ナット４により支柱１の一方のフランジ１ａに固定されている。金網２の上下端（上端のみ図示）には、ワイヤ５が挿通され、金網２とワイヤ５とは、コイル１０により連結されている。ワイヤ５の両端は、アイボルト６を介して支柱１のウエッブ１ｂに固定されている。なお、コイル１０を使用せずに、図３に示すように、金網２にワイヤ５のみを挿通してワイヤ５に金網２を取り付けても良い。   In FIGS. 1 and 2, reference numeral 1 denotes a pillar made of H-shaped steel having a flange 1 a and a web 1 b formed on a slope, and 2 is a rhombus wire mesh stretched between the pillars 1. The wire mesh is not limited to the rhombus wire mesh. A fixing bar 3 is inserted into both ends (only one end is shown) of the wire mesh 2, and the fixing bar 3 is fixed to one flange 1 a of the column 1 by U bolts and nuts 4. A wire 5 is inserted through the upper and lower ends (only the upper end is shown) of the wire mesh 2, and the wire mesh 2 and the wire 5 are connected by a coil 10. Both ends of the wire 5 are fixed to the web 1 b of the support column 1 via eyebolts 6. Instead of using the coil 10, only the wire 5 may be inserted into the wire mesh 2 and the wire mesh 2 may be attached to the wire 5 as shown in FIG. 3.

７は、折返し用棒鋼であり、金網２の端部に差し込まれている。折返し用棒鋼７の上下端部は、Ｕ字状に折り曲げられ、ワイヤ５に係合している。なお、折返し用棒鋼７は、ワイヤ５に係合させずに、金網２に直接、係合させても良い。   Reference numeral 7 denotes a turning bar, which is inserted into the end of the wire mesh 2. The upper and lower ends of the turning bar 7 are bent in a U shape and engaged with the wire 5. The folding bar 7 may be directly engaged with the wire mesh 2 without being engaged with the wire 5.

８は、伸び代部である。伸び代部８は、図１に示すように、折返し用棒鋼７を金網２とともに支柱１側に引き寄せて、金網２の端部を畳むことにより形成される。金網２の畳み方向を、図１中、矢印で示す。伸び代部８は、金網２の何れか一方の端部、または、金網２の両端部に形成する。   8 is an elongation allowance part. As shown in FIG. 1, the extension allowance 8 is formed by pulling the turning bar 7 together with the wire mesh 2 toward the support 1 and folding the end of the wire mesh 2. The folding direction of the wire mesh 2 is indicated by arrows in FIG. The stretch allowance 8 is formed at one end of the wire mesh 2 or at both ends of the wire mesh 2.

９は、結束バンド等からなる仮止め部材であり、折返し用棒鋼７を固定用棒鋼３を介して支柱１に仮止めする。   Reference numeral 9 denotes a temporary fixing member made of a binding band or the like, and temporarily fixes the folding bar 7 to the support 1 via the fixing bar 3.

以上のように構成されている、この発明によれば、以下のようにして、最初の落石による金網２の目の広がりや破れを抑制することができる結果、続いて起こる落石に確実に対応することができる。   According to the present invention configured as described above, as a result of suppressing the spread and breakage of the wire net 2 due to the first falling rock, the following method can reliably cope with the falling rock. be able to.

落石防護柵の構築に際して、図１に示すように、折返し用棒鋼７を金網２とともに支柱１側に引き寄せて、金網２の端部を畳むことにより、金網２の少なくとも一方の端部に伸び代部８を形成する。伸び代部８が広がらないように、結束バンド等の仮止め部材９により折返し用棒鋼７と固定用棒鋼３とを結束して、折返し用棒鋼７を固定用棒鋼３を介して支柱１に仮止めする。   When constructing the rockfall protection fence, as shown in FIG. 1, the folding bar 7 is drawn together with the wire mesh 2 toward the support 1, and the end of the wire mesh 2 is folded, so that the stretch allowance is extended to at least one end of the wire mesh 2. Part 8 is formed. The folding steel bar 7 and the fixing steel bar 3 are bound by a temporary fixing member 9 such as a binding band so that the extension allowance 8 is not widened, and the folding steel bar 7 is temporarily attached to the column 1 via the fixing steel bar 3. Stop.

上記のように、金網２の少なくとも一方の端部に伸び代部８を形成した状態で落石が発生して、落石が金網２に衝突すると、その衝撃力により金網２が引っ張られる結果、仮止め部材９が破断して、金網２は、伸び代部８の長さ分だけ伸びる。   As described above, when a falling rock is generated in a state in which the extension allowance 8 is formed at at least one end of the wire mesh 2 and the falling rock collides with the wire mesh 2, the wire mesh 2 is pulled by the impact force. The member 9 is broken, and the wire mesh 2 is extended by the length of the extension allowance 8.

このように、金網２が伸びることによって、落石の衝撃力が吸収される結果、最初の落石により金網２の目が大きく広がったり、金網２が破れたりすることが抑制され、これによって、続いて起こる落石を確実に受け止めることができる。   As described above, the impact of the falling rocks is absorbed by the extension of the wire mesh 2, and as a result, the mesh of the wire mesh 2 is greatly expanded or the wire mesh 2 is prevented from being broken by the first falling rock. You can reliably catch the falling rocks that occur.

以上、説明したように、この発明によれば、支柱１間に張られる金網２に伸び代部８を設けることによって、最初の落石による金網２の目の広がりや破れを抑制することができる結果、続いて起こる落石に確実に対応することができる。   As described above, according to the present invention, by providing the extension allowance 8 in the wire mesh 2 stretched between the columns 1, it is possible to suppress the spread and breakage of the wire mesh 2 due to the first falling rock. And, it can respond to the falling rocks that follow.

１：支柱
１ａ：フランジ
１ｂ：ウエッブ
２：金網
３：固定用棒鋼
４：Ｕボルト・ナット
５：ワイヤ
６：アイボルト
７：折返し用棒鋼
８：伸び代部
９：仮止め部材
１０：コイル
１１：支柱
１２：斜面
１３：山側ワイヤ
１４：山側ワイヤ
１５：金網 1: Strut 1a: Flange 1b: Web 2: Wire mesh 3: Steel bar for fixing 4: U bolt and nut 5: Wire 6: Eye bolt 7: Steel bar for folding 8: Elongation allowance 9: Temporary fixing member 10: Coil 11: Strut 12: Slope 13: Mountain side wire 14: Mountain side wire 15: Wire mesh

Claims (4)

落石を防止するために斜面に構築される落石防護柵において、
前記斜面に設置される支柱と、前記支柱間に張り渡される金網とを備え、前記金網は、伸び代部を有し、落石が前記金網に衝突した際に、前記金網は、前記伸び代部の長さ分だけ伸びることを特徴とする落石防護柵。 In the rockfall protection fence constructed on the slope to prevent rockfall,
It comprises a column installed on the slope and a wire mesh stretched between the columns, the wire mesh has an extension portion, and when the falling rock collides with the wire mesh, the wire mesh is the extension allowance portion A falling rock guard that extends by the length of 前記伸び代部は、前記金網の少なくとも一方の端部を前記支柱側に引き寄せることにより形成され、前記伸び代部は、前記支柱に仮止め部材を介して仮止めされ、落石が前記金網に衝突した際に、前記仮止め部材が破断して、前記金網が前記伸び代部の長さ分だけ伸びることを特徴とする、請求項１に記載の落石防護柵。   The extension allowance portion is formed by pulling at least one end of the wire mesh toward the support column, and the extension allowance portion is temporarily fixed to the support via a temporary fixing member, and the falling rock collides with the wire mesh. 2. The falling rock protection fence according to claim 1, wherein the temporary fixing member is broken and the wire net is extended by a length of the extension allowance. 3. 前記伸び代部は、前記金網の端部に差し込んだ折返し用棒鋼を、前記金網とともに前記支柱側に引き寄せることにより形成され、前記折返し用棒鋼は、前記支柱に前記仮止め部材を介して仮止めされていることを特徴とする、請求項２に記載の落石防護柵。   The extension allowance portion is formed by drawing a folding bar inserted into an end of the wire mesh toward the support column together with the wire mesh, and the folding bar is temporarily fixed to the support via the temporary fixing member. The rock fall protection fence according to claim 2, wherein the rock fall protection fence is provided. 前記仮止め部材は、結束バンドからなっていることを特徴とする、請求項２または３に記載の落石防護柵。   The rock fall protection fence according to claim 2 or 3, wherein the temporary fixing member comprises a binding band.
JP2017104738A 2017-05-26 2017-05-26 Rockfall protection fence Active JP6860908B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114275117A (en) * 2021-11-02 2022-04-05 中船澄西船舶修造有限公司 Slipway protection cover
CN115323960A (en) * 2022-07-11 2022-11-11 泉州装备制造研究所 Urban traffic protective guard
CN115323960B (en) * 2022-07-11 2024-05-31 泉州装备制造研究所 Urban traffic rail guard

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4730810A (en) * 1985-01-14 1988-03-15 Mecanroc Protective barrier against falls of stones
JPH06173221A (en) * 1991-08-28 1994-06-21 A Shii D:Kk Shock absorbing fence
JP2009185514A (en) * 2008-02-06 2009-08-20 Purotekku Engineering:Kk Shock absorbing fence

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4730810A (en) * 1985-01-14 1988-03-15 Mecanroc Protective barrier against falls of stones
JPH06173221A (en) * 1991-08-28 1994-06-21 A Shii D:Kk Shock absorbing fence
JP2009185514A (en) * 2008-02-06 2009-08-20 Purotekku Engineering:Kk Shock absorbing fence

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114275117A (en) * 2021-11-02 2022-04-05 中船澄西船舶修造有限公司 Slipway protection cover
CN115323960A (en) * 2022-07-11 2022-11-11 泉州装备制造研究所 Urban traffic protective guard
CN115323960B (en) * 2022-07-11 2024-05-31 泉州装备制造研究所 Urban traffic rail guard

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