JP5315938B2

JP5315938B2 - Protective fence

Info

Publication number: JP5315938B2
Application number: JP2008284865A
Authority: JP
Inventors: 佐智夫中村
Original assignee: 日本サミコン株式会社
Priority date: 2008-11-05
Filing date: 2008-11-05
Publication date: 2013-10-16
Anticipated expiration: 2028-11-05
Also published as: JP2010112047A

Description

本発明は、雪崩・落石等における防護柵に関する。 The present invention relates to a protective fence for avalanches, falling rocks and the like.

従来、この種の防護柵では、所定の間隔で支柱を設け、各支柱の間に水平ロープ材を水平方向のスライドを許容した状態で係留し、水平ロープの両端は固定し、各支柱間を水平ロープ材に掛止されたワイヤ製のネットで遮蔽し、各水平ロープ材の途上に水平ロープ材を重合させて形成した余長部と、余長部を一定の力で挟持する挟持具とにより、水平ロープ材に所定張力以上の張力が作用したとき、水平ロープ材が一定の摩擦力を保持したまま余長部が伸長して張力を吸収する緩衝部を設けており、衝撃吸収柵の網面に作用する衝撃力が緩衝部の設定摩擦抵抗を越えると、水平ロープ材の途上に形成した緩衝部が耐えられず、ロープ材と挟持具との摺動の間で摺動を開始し、大きな衝撃力を受けてもループの縮径により効果的にエネルギーを吸収することができる（例えば特許文献１）。 Conventionally, in this type of protective fence, support posts are provided at a predetermined interval, and a horizontal rope material is moored between each support in a state that allows horizontal sliding, and both ends of the horizontal rope are fixed, and between each support post. An extra length portion formed by polymerizing the horizontal rope material in the middle of each horizontal rope material, shielded by a wire net hooked on the horizontal rope material, and a clamping tool for clamping the extra length portion with a constant force Thus, when a tension higher than a predetermined tension is applied to the horizontal rope material, the horizontal rope material is provided with a buffer portion that absorbs the tension by extending the extra length while maintaining a constant frictional force. If the impact force acting on the mesh surface exceeds the set frictional resistance of the shock absorber, the shock absorber formed in the middle of the horizontal rope material will not be able to withstand, and will start to slide between the rope material and the holding tool. Even when subjected to a large impact force, energy is effectively saved by the diameter of the loop. It can be yield (for example, Patent Document 1).

また、ガードロープの他端部相互を重ね合わせて重複部を形成し、この重複部を複数間隔を置いて設けられた締付部材により緊結すると共に、前記締付部材に係止可能な端末突部を前記ガードロープの他端部の端部に設け、前記ガードロープに加わる引張力によって前記重複部の他端部相互が摩擦摺動するように構成（例えば特許文献２）している。 Further, the other end portions of the guard rope are overlapped with each other to form an overlapping portion, and the overlapping portion is fastened by a fastening member provided at a plurality of intervals, and a terminal protrusion that can be locked to the fastening member. A portion is provided at the end portion of the other end portion of the guard rope, and the other end portions of the overlapping portion are frictionally slid by a tensile force applied to the guard rope (for example, Patent Document 2).

さらに、支柱間に張り渡された保持ロープの中途に、同保持ロープに及んでくる衝撃エネルギーを吸収するためのブレーキ装置が設けてあり、このブレーキ装置が、重ね合わされた両端部を緊締部材によって固定したループ管を有しており、当該保持ロープがこのループ管内を通り、他方端部の管口から出て延びて（例えば特許文献３）おり、緊締部でのループ管重畳部の摩擦及びループ管と緊締部材との間の摩擦によりエネルギー吸収が行われる。
特公平７−１８１３４号公報特許第２５０３９２９号公報特開平１０−８８５２７号公報 Furthermore, a brake device for absorbing impact energy reaching the holding rope is provided in the middle of the holding rope stretched between the struts. The holding rope passes through the inside of the loop pipe and extends out from the pipe opening at the other end (for example, Patent Document 3), and the friction of the loop pipe overlapping portion at the tightening portion and Energy is absorbed by friction between the loop tube and the tightening member.
Japanese Patent Publication No. 7-18134 Japanese Patent No. 2503929 JP-A-10-88527

上記の防護柵のように、支柱をコンクリート基礎などに立設したものでは、支柱の上部に落石が衝突した場合、支柱自体が変形して落石エネルギーを吸収することができるが、支柱の下部に落石が衝突した場合は、支柱が変形する前にコンクリート基礎が崩壊してしまい、エネルギー吸収効率が低下するという問題がある。 In the case where the support is erected on a concrete foundation, such as the above-mentioned protective fence, when the falling rock collides with the upper part of the support, the support itself can be deformed to absorb the falling rock energy. When a falling rock collides, there is a problem that the concrete foundation collapses before the support column is deformed, and the energy absorption efficiency decreases.

そこで、本発明は、支柱下部に落石が衝突した場合にも支柱により落石エネルギーを効果的に吸収することができる防護柵を提供することを目的とする。 Then, an object of this invention is to provide the protective fence which can absorb rock fall energy effectively with a support | pillar, even when a fall rock collides with a support | pillar lower part.

請求項１の発明は、所定の間隔で複数の支柱を設け、前記支柱間に防護面を設け、前記支柱に補助杆を設けた防護柵であって、前記支柱の前方に、落石を受ける前面を有する前記補助杆を設けると共に、この補助杆と前記支柱との間に間隔を設け、前記支柱と前記補助杆とを連結する連結材を備え、前記連結材が前記支柱の高さ方向中央より上部側に配置され、落石により前記補助杆又は／及び前記連結材が変形するように構成したものである。 The invention of claim 1 is a protective fence in which a plurality of support posts are provided at predetermined intervals, a protection surface is provided between the support posts, and an auxiliary rod is provided on the support posts, before a falling rock is received in front of the support posts. provided with the auxiliary rod having a surface, the distance between the auxiliary rod the strut is provided, comprising a connecting member for connecting the auxiliary rod and the strut, a height direction center of the connecting member is a strut It is arrange | positioned more upper side, and it is comprised so that the said auxiliary | assistant cage | basket or / and the said connection material may deform | transform by falling rock .

また、請求項２の発明は、所定の間隔で複数の支柱を設け、前記支柱間に防護面を設け、落石により変形する変形部材を設けた防護柵であって、前記支柱の前方に、落石を受ける前面を有する補助杆を設けると共に、この補助杆と前記支柱との間に間隔を設け、前記補助杆と前記支柱との間に前記変形部材を上下に間隔を置いて複数段に配置すると共に、下段の前記変形部材の強度を上段の前記変形部材の強度より大きく設定したものである。 The invention of claim 2 is a protective fence provided with a plurality of support posts at predetermined intervals, provided with a protective surface between the support posts, and provided with a deformable member deformed by falling rocks, provided with an auxiliary rod having a front surface for receiving a spacing between the auxiliary rod the strut is provided, arranged in a plurality of stages spaced said deformable member vertically between said post and said auxiliary rod In addition, the strength of the lower deformable member is set to be greater than the strength of the upper deformable member .

また、請求項３の発明は、前記変形部材がリング材であり、前記リング材の外周を前記支柱と補助杆により挟んだものである。 According to a third aspect of the present invention, the deformable member is a ring material, and an outer periphery of the ring material is sandwiched between the support column and an auxiliary rod.

また、請求項４の発明は、前記変形部材が、前記支柱と前記補助杆との間で屈曲した屈曲材である。 The invention of claim 4, the deformable member is bent member bent between the strut and the auxiliary rod.

また、請求項５の発明は、前記リング材の軸心を縦方向に向け、前記支柱と補助杆の少なくとも一方の前記リング材側の面の幅が、前記リング材の直径より小さいものである。 Further, in the invention of claim 5 , the axial center of the ring material is oriented in the vertical direction, and the width of the surface on the ring material side of at least one of the support column and the auxiliary rod is smaller than the diameter of the ring material. .

また、請求項６の発明は、前記補助杆の下部と前記支柱との間に、落石により変形する変形部材を設けたものである。 According to a sixth aspect of the present invention, a deformable member that is deformed by falling rocks is provided between a lower portion of the auxiliary rod and the support column.

請求項１の構成によれば、支柱下部に向った落石が補助杆に衝突すると、補助杆又は／及び連結材が変形して衝撃エネルギーを吸収することができる。 According to the first aspect, the rockfall that towards the strut lower collides with the auxiliary lever, the auxiliary lever and / or connecting member can absorb impact energy by deformation.

請求項２の構成によれば、支柱下部に向った落石が補助杆に衝突すると、変形部材が変形して衝撃エネルギーを吸収することができる。 According to the structure of Claim 2, when the falling rock toward the lower part of the column collides with the auxiliary rod, the deformable member is deformed to absorb the impact energy.

また、請求項３の構成によれば、補助杆が衝撃力を受けると、リング材が押し潰され、この変形により衝撃エネルギーが吸収される。 According to the third aspect of the present invention, when the auxiliary rod receives an impact force, the ring material is crushed, and the impact energy is absorbed by this deformation.

また、請求項４の構成によれば、補助杆が衝撃力を受けると、屈曲部が更に屈曲し、この変形により衝撃エネルギーが吸収される。 According to the fourth aspect of the present invention, when the auxiliary rod receives an impact force, the bent portion is further bent, and the impact energy is absorbed by this deformation.

また、請求項１の構成によれば、補助杆が衝撃力を受けると、補助杆の下端を支柱に近づける力により補助杆又は／及び連結材が変形し、この変形により衝撃エネルギーが吸収される。 According to the configuration of claim 1 , when the auxiliary rod receives an impact force, the auxiliary rod or / and the connecting material are deformed by a force that brings the lower end of the auxiliary rod closer to the support column, and the impact energy is absorbed by this deformation. .

また、請求項２の構成によれば、補助杆が衝撃力を受けると、複数のリング材が押し潰され、これらの変形により衝撃エネルギーが吸収される。 According to the second aspect of the present invention, when the auxiliary rod receives an impact force, the plurality of ring members are crushed and the impact energy is absorbed by these deformations.

また、請求項５の構成によれば、リング材の変形により衝撃力を効率よく吸収することができる。 Moreover, according to the structure of Claim 5, an impact force can be absorbed efficiently by deformation | transformation of a ring material.

また、請求項６の構成によれば、補助杆又は／及び連結材の変形に加えて、変形部材が変形し、これらの変形により衝撃エネルギーが吸収される。 Further, according to the configuration of claim 6, in addition to the deformation of the auxiliary rod and / or connecting member, the deformable member is deformed, impact energy is absorbed by these variations.

また、請求項２の構成によれば、変形部材が変形してから支柱が変形できるように設定することができ、これにより、小さい衝撃エネルギーでは支柱が変形し難くなる。そして、下段側に衝撃力を受けた場合、強度が大きな変形部材が変形することにより大きな衝撃エネルギーを吸収できる。 Moreover, according to the structure of Claim 2 , it can set so that a support | pillar can deform | transform after a deformation | transformation member deform | transforms, By this, a support | pillar becomes difficult to deform | transform with a small impact energy . When an impact force is applied to the lower side, a large impact energy can be absorbed by the deformation of the deformable member having a high strength.

本発明における好適な実施の形態について、添付図面を参照しながら詳細に説明する。なお、以下に説明する実施の形態は、特許請求の範囲に記載された本発明の内容を限定するものではない。また、以下に説明される構成の全てが、本発明の必須要件であるとは限らない。各実施例では、従来とは異なる新規な防護柵を採用することにより、従来にない防護柵が得られ、その防護柵について記述する。 Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, an unprecedented protective fence is obtained by adopting a new protective fence different from the conventional one, and the protective fence will be described.

参考例１
以下、本発明の参考例を添付図面を参照して説明する。図１〜図３は本発明の基本構成を説明する参考例１を示し、同図に示すように、防護柵は、斜面あるいは斜面に並んで基礎たるコンクリート基礎１を設け、このコンクリート基礎１に複数の支柱２…を立設し、その支柱２の下端を前記コンクリート基礎１に固着している。前記支柱２の前面には間隔をおいて支柱２の一部を構成する補助杆３が設けられ、この補助杆３は前記支柱２と略平行に配置されている。そして、それら支柱２及び補助杆３は、Ｈ型鋼，コンクリート柱，鋼管あるいはコンクリート充填鋼管などからなり、特に鋼製のものを用いることが好ましく、この例ではＨ形鋼を用い、Ｈ型鋼は、前後のフランジ部Ｆ，Ｆを中央のウエブ部Ｕにより連結した断面形状を有する。 Reference example 1
Hereinafter, reference examples of the present invention will be described with reference to the accompanying drawings. 1 to 3 show a reference example 1 for explaining the basic configuration of the present invention. As shown in the figure, the protective fence is provided with a concrete foundation 1 which is a foundation alongside a slope or a slope. A plurality of columns 2 are erected, and the lower ends of the columns 2 are fixed to the concrete foundation 1. An auxiliary rod 3 constituting a part of the column 2 is provided on the front surface of the column 2 at an interval, and the auxiliary rod 3 is disposed substantially parallel to the column 2. And these support | pillar 2 and the auxiliary rod 3 consist of H-shaped steel, a concrete pillar, a steel pipe, or a concrete filling steel pipe, and it is preferable to use especially steel, and in this example, H-shaped steel is used, It has a cross-sectional shape in which front and rear flange portions F, F are connected by a central web portion U.

前記支柱２間には水平主線材たる水平ロープ材４，４が上下段に設けられ、この水平ロープ材４を係止する係止部５が前記補助杆３の前面に設けられ、この係止部５は、水平ロープ材４を係止する係止用フックなどにより構成される。また、前記水平ロープ材４の両端は、それぞれ前記補助杆３や他の部材に固定されている。 Horizontal rope members 4 and 4 that are horizontal main wires are provided between the support columns 2 in the upper and lower stages, and a locking portion 5 that locks the horizontal rope material 4 is provided on the front surface of the auxiliary rod 3. The part 5 is constituted by a hook for locking the horizontal rope material 4 or the like. Further, both ends of the horizontal rope member 4 are fixed to the auxiliary rod 3 and other members, respectively.

前記支柱２間には、該支柱２間を遮蔽する防護面たる網体６が設けられており、この網体６は前記水平ロープ材４に掛止され、前記補助杆３の前面に張設されている。 A net 6 serving as a protective surface for shielding between the columns 2 is provided between the columns 2. The mesh 6 is hooked on the horizontal rope member 4 and is stretched on the front surface of the auxiliary rod 3. Has been.

前記支柱２と補助杆３との間には、変形部材たるリング材１１が設けられている。また、前記支柱２は、フランジ部Ｆにより平坦な前面２１を有し、前記補助杆３は、フランジ部Ｆにより平坦な後面２２を有し、それら前面２１と後面２２との間に前記リング材１１が挟まれている。尚、前記補助杆３の前面が落石受面８である。 A ring member 11 as a deforming member is provided between the support column 2 and the auxiliary rod 3. Further, the support column 2 has a flat front surface 21 by a flange portion F, and the auxiliary rod 3 has a flat rear surface 22 by a flange portion F, and the ring material is provided between the front surface 21 and the rear surface 22. 11 is sandwiched. Note that the front surface of the auxiliary rod 3 is a rock fall receiving surface 8.

前記リング材１１は鋼管からなり、その軸心を横方向にして上下多段に設けており、この例では、間隔を置いて上中下に配置されている。尚、リング材１１の長さはフランジ部Ｆの幅より長い。また、リング材１１の少なくとも１つは、支柱２及び補助杆３に固定され、例えば固定には溶着などが用いられ、残りのリング材１１は、支柱２又は補助杆３の少なくとも一方に固定されていればよい。尚、この例では、全てのリング材１１を支柱２及び補助杆３に固定している。 The ring material 11 is made of a steel pipe, and is provided in multiple upper and lower stages with the axis center in the horizontal direction. The length of the ring material 11 is longer than the width of the flange portion F. Further, at least one of the ring members 11 is fixed to the support column 2 and the auxiliary rod 3, for example, welding is used for fixing, and the remaining ring material 11 is fixed to at least one of the support column 2 or the auxiliary rod 3. It only has to be. In this example, all the ring members 11 are fixed to the support column 2 and the auxiliary rod 3.

次に、前記構成につき、その作用を説明する。支柱２に向かう落石Ｒは、前方の補助杆３の下部に衝突する。補助杆３の下部に落石Ｒが衝突すると、下段のリング材１１が押し潰されて変形し、この変形により衝撃エネルギーが吸収され、コンクリート基礎１の崩壊が防止される。この場合、下段のリング材１１と共に、中段及び上段のリング材１１も変形し、衝突位置に近いリング材１１の変形量が大となる。また、補助杆３の上部に落石Ｒが衝突した場合も、上段のリング材１１が押し潰されて変形し、この変形により衝撃エネルギーが吸収される。 Next, the effect | action is demonstrated about the said structure. The falling rock R heading to the support 2 collides with the lower part of the auxiliary rod 3 in front. When the falling rock R collides with the lower part of the auxiliary rod 3, the lower ring material 11 is crushed and deformed, and the impact energy is absorbed by this deformation, and the concrete foundation 1 is prevented from collapsing. In this case, the middle and upper ring members 11 are deformed together with the lower ring member 11, and the deformation amount of the ring member 11 near the collision position becomes large. Further, even when the falling rock R collides with the upper part of the auxiliary rod 3, the upper ring material 11 is crushed and deformed, and the impact energy is absorbed by this deformation.

このように本参考例では、所定の間隔で複数の支柱２，２を設け、支柱２，２間に防護面たる網体６を設け、落石Ｒにより変形する変形部材を設けた防護柵であって、支柱２の前方に、落石を受ける前面である落石受面８を有する補助杆３を設けると共に、補助杆３と支柱２との間に落石Ｒの衝突により変形する変形部材たるリング材１１を設けたから、支柱２の下部に向った落石Ｒが補助杆３に衝突すると、リング材１１が変形して衝撃エネルギーを吸収することができる。 As described above, in this reference example, the protective fence is provided with a plurality of support columns 2 and 2 at predetermined intervals, the net body 6 serving as a protective surface between the support columns 2 and 2, and a deformable member deformed by the falling rock R. In addition, an auxiliary rod 3 having a rockfall receiving surface 8 which is a front surface for receiving rockfall is provided in front of the column 2, and a ring member 11 which is a deforming member deformed by the collision of the rockfall R between the auxiliary rod 3 and the column 2. Therefore, when the falling rock R facing the lower part of the support 2 collides with the auxiliary rod 3, the ring material 11 is deformed and can absorb the impact energy.

また、このように本参考例では、変形部材がリング材１１であり、リング材１１の外周を支柱２と補助杆３により挟んだから、補助杆３が衝撃力を受けると、リング材１１が押し潰され、この変形により衝撃エネルギーが吸収される。 As described above, in this reference example, the deformable member is the ring material 11, and the outer periphery of the ring material 11 is sandwiched between the support column 2 and the auxiliary rod 3. Therefore, when the auxiliary rod 3 receives an impact force, the ring material 11 is pushed. The impact energy is absorbed by this deformation.

また、このように本参考例では、変形部材たるリング材１１を、上下に間隔を置いて複数段に配置したから、補助杆が衝撃力を受けると、複数のリング材が押し潰され、これらの変形により衝撃エネルギーが吸収される。 In this way, in this reference example, since the ring material 11 as a deforming member is arranged in a plurality of stages at intervals in the vertical direction, when the auxiliary rod receives an impact force, the plurality of ring materials are crushed, Impact energy is absorbed by the deformation of.

また、参考例上の効果として、落石Ｒを受けると、網体６が撓んで落石Ｒを止め、この撓み位置が山側に近いほど反山側の防護領域を広く取ることができるが、本参考例では、支柱２の前面に網体６を設ける場合に比べて、リング材１１及び補助杆３の分だけ網体６が前方に位置するから、落石Ｒを捕捉した場合の網体６の撓み位置を山側にすることができる。 Further, as an effect on the reference example, when receiving the falling rock R, stop the falling rock R is bent netting 6, this bending position can be widened protective area of about anti mountain near the mountain side, the reference example Then, compared with the case where the net body 6 is provided on the front surface of the support 2, the net body 6 is positioned forward by the amount of the ring material 11 and the auxiliary rod 3, so that the net body 6 is bent when the falling rock R is captured. Can be on the mountain side.

参考例２
図４〜図６は本発明の参考例２を示し、上記参考例１と同一部分に同一符号を付し、その詳細な説明を省略して詳述する。尚、以下の実施例及び参考例では、補助杆３の前面に設けた水平ロープ材４，係止部５及び網体６を図示省略する。 Reference example 2
4 to 6 show Reference Example 2 of the present invention, in which the same reference numerals are given to the same parts as in Reference Example 1, and detailed description thereof is omitted. In the following examples and reference examples , the horizontal rope member 4, the locking portion 5 and the net 6 provided on the front surface of the auxiliary rod 3 are not shown.

この例では、変形部材たるリング材１１は、その軸心を縦方向にして配置されている。また、前記前面２１及び後面２２には、載荷部材たる載荷板２３，２３がそれぞれ設けられ、これら載荷板２３，２３の載荷面２３Ｍ，２３Ｍの間に前記リング材１１を挟むようにして配置している。 In this example, the ring member 11 that is a deformable member is arranged with its axial center in the vertical direction. The front surface 21 and the rear surface 22 are provided with loading plates 23 and 23 as loading members, respectively, and the ring material 11 is disposed between the loading surfaces 23M and 23M of the loading plates 23 and 23. .

また、両載荷面２３Ｍ，２３Ｍ間でリング材１１を潰し、少なくとも一方の載荷面２３Ｍのリング材１１の直径方向における幅Ｗは、リング材１１の直径Ｄより狭いから、同一出願人の特許第４０５３０５８号公報に記載されているように、支柱２と補助杆３との間でリング材１１を押し潰すと、リング材１１は対向する内面が当接する略∞状に変形するが、載荷面２３Ｍ，２３Ｍの幅Ｗがリング材１１の直径Ｄより狭いから、載荷面２３Ｍがその略∞状の湾曲突部１１Ｄ，１１Ｄを押し潰すことが無く、リング材１１がスムーズに変形して衝撃エネルギーを吸収する。 Further, the ring material 11 is crushed between both loading surfaces 23M, 23M, and the width W in the diameter direction of the ring material 11 of at least one loading surface 23M is narrower than the diameter D of the ring material 11, so As described in Japanese Patent No. 4053058, when the ring material 11 is crushed between the support column 2 and the auxiliary rod 3, the ring material 11 is deformed into a substantially infinite shape where the opposed inner surfaces abut, but the loading surface 23M , 23M is narrower than the diameter D of the ring material 11, the loading surface 23M does not crush the substantially ∞-shaped curved protrusions 11D, 11D, and the ring material 11 is smoothly deformed to generate impact energy . Absorb.

このように本参考例においても、上記参考例と同様な作用・効果を奏する。 As described above, this reference example also has the same operations and effects as the above reference example.

また、このように本参考例では、リング材１１の軸心を縦方向に向け、支柱２と補助杆３の少なくとも一方のリング材１１側の面たる載荷面２３Ｍの幅が、リング材１１の直径Ｄより小さいから、リング材１１の変形により衝撃エネルギーを効率よく吸収することができる。 As described above, in this reference example, the axis of the ring material 11 is oriented in the vertical direction, and the width of the loading surface 23M, which is the surface of the support column 2 and the auxiliary rod 3 on the ring material 11 side, is Since it is smaller than the diameter D, the impact energy can be efficiently absorbed by the deformation of the ring material 11.

参考例３
図７は本発明の参考例３を示し、上記各参考例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例の変形部材は、前記支柱２と補助杆３との間で屈曲した屈曲材１２であり、この屈曲材１２は、Ｈ型鋼からなる前，後片１２Ａ，１２Ｂを備え、これら前，後片１２Ａ，１２Ｂを交差方向に配置すると共に、それら中央で連結して、略へ字上に形成し、両端側を前記支柱２と補助杆３に連結している。尚、屈曲材１２は、上下に設けられ、上の屈曲材１２は下側に凸に屈曲し、下の屈曲材１２は上側に凸に屈曲している。 Reference example 3
FIG. 7 shows Reference Example 3 of the present invention. The same reference numerals are given to the same parts as those of the above-mentioned reference examples, and detailed description thereof will be omitted. The bending material 12 is bent between the flange 3 and the bending material 12 includes front and rear pieces 12A and 12B made of H-shaped steel, and the front and rear pieces 12A and 12B are arranged in a crossing direction. They are connected at the center and formed substantially in a letter shape, and both ends are connected to the support column 2 and the auxiliary rod 3. In addition, the bending material 12 is provided up and down, the upper bending material 12 is bent convexly on the lower side, and the lower bending material 12 is bent convexly on the upper side.

したがって、補助杆３の下部に落石Ｒが衝突すると、下部の屈曲材１２が変形して衝撃エネルギーを吸収し、補助杆３の上部に落石Ｒが衝突すると、上部の屈曲材１２が変形して衝撃エネルギーを吸収する。 Therefore, when the falling rock R collides with the lower part of the auxiliary rod 3, the lower bending material 12 is deformed to absorb impact energy, and when the falling rock R collides with the upper portion of the auxiliary rocking 3, the upper bending material 12 is deformed. Absorbs impact energy .

このように本参考例では、上記参考例と同様な作用・効果を奏する。 As described above, the present reference example has the same operations and effects as the reference example.

また、このように本参考例では、前記変形部材が、支柱２と補助杆３との間で屈曲した屈曲材１２であるから、補助杆３が衝撃力を受けると、屈曲材１２が更に屈曲し、この変形により衝撃エネルギーが吸収される。 In this way, in this reference example, since the deformable member is the bending material 12 bent between the support column 2 and the auxiliary rod 3, the bending material 12 is further bent when the auxiliary rod 3 receives an impact force. However, the impact energy is absorbed by this deformation.

参考例４
図８は本発明の参考例４を示し、上記各参考例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例の変形部材は、２つの前記屈曲材１２を組み合わせてなり、屈曲方向を平面方向に合わせると共に左右外側に凸とした２つの屈曲材１２，１２の両側を、それぞれ支柱２の前面２１と補助杆３の後面２２に連結してなる。 Reference example 4
FIG. 8 shows a reference example 4 of the present invention. The same reference numerals are given to the same parts as those of the above-mentioned reference examples, and detailed description thereof will be omitted. The deformable member of this example includes two bending members. 12 are combined, and both sides of the two bending members 12 and 12 that are convex to the left and right sides are connected to the front surface 21 of the support column 2 and the rear surface 22 of the auxiliary rod 3 respectively, with the bending direction aligned with the plane direction.

そして、補助杆３に落石Ｒが衝突すると、２つの屈曲材１２，１２が更に屈曲し、この変形により衝撃エネルギーが吸収される。また、２つの屈曲材１２，１２が左右に配置されているから、図に示したように、補助杆３と支柱２の前後方向に対して落石Ｒの向きが斜めに前面２１に衝突しても、左右の屈曲材１２が異なる形に変形して落石Ｒの衝撃エネルギーを確実に吸収することができる。 When the falling rock R collides with the auxiliary rod 3, the two bending members 12, 12 are further bent, and the impact energy is absorbed by this deformation. Further, since the two bending members 12, 12 are arranged on the left and right, as shown in the figure, the direction of the falling rock R obliquely collides with the front surface 21 with respect to the front-rear direction of the auxiliary rod 3 and the support column 2. In addition, the left and right bending members 12 can be deformed into different shapes, and the impact energy of the falling rock R can be reliably absorbed.

図９は本発明の実施例１を示し、上記各参考例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例の変形部材は、軸心を縦方向にして上下多段に設けたリング材１１Ａ，１１Ｂ，１１Ｃ，１１Ｄであり、上段から下段に向かってリング材１１Ａ，１１Ｂ，１１Ｃ，１１Ｄの長さを長くして、上段側より下段側の方が大きな衝撃エネルギーを吸収できるように設定している。 FIG. 9 shows the first embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-mentioned reference examples, and detailed description thereof will be omitted. The deformable member of this example has an axial center in the vertical direction. ring material 11A provided on the upper and lower multiple stages in the, 11B, 11C, a 11D, ring member 11A toward the upper to the lower, 11B, 11C, and the length comb length of 11D, it is towards the lower side from the upper side It is set to absorb large impact energy .

このように本実施例では、上記参考例と同様な作用・効果を奏する。 As described above, in this embodiment, the same operations and effects as the above-described reference example are achieved.

また、このように本実施例では、下段の変形部材たるリング材１１Ｄの強度を上段の変形部材たるリング材１１Ａの強度より大きく設定したから、下段側に衝撃力を受けた場合、強度が大きなリング材１１Ｄが変形することにより大きな衝撃エネルギーを吸収でき、リング材１１Ｄの変形後、支柱２を変形させる力が加わるから、先にリング材１１Ｄが変形し、これにより、小さい衝撃エネルギーでは支柱２が変形し難くなる。 In this way, in this embodiment, since the strength of the ring material 11D as the lower deformable member is set to be greater than the strength of the ring material 11A as the upper deformable member, the strength is high when receiving an impact force on the lower side. capable of absorbing large impact energy by the ring member 11D is deformed, after deformation of the ring member 11D, since a force to deform the support column 2 is added, previously to the ring member 11D is deformed by this, the small impact energy strut 2 becomes difficult to deform.

また、この例では、直径、肉厚及び材質の同じ鋼管からなる長さの異なるリング材１１Ａ，１１Ｂ，１１Ｃ，１１Ｄを用いたが、肉厚又は／及び材質などを変えて、強度即ち変形による衝撃エネルギー吸収量の異なるリング材１１Ａ，１１Ｂ，１１Ｃ，１１Ｄを用いてもよい。 Further, in this example, ring materials 11A, 11B, 11C, and 11D having different lengths made of steel pipes having the same diameter, thickness, and material are used. impact energy absorption of different ring materials 11A, 11B, 11C, may be used 11D.

図１０は本発明の実施例２を示し、上記各実施例及び参考例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、支柱２と補助杆３との間に所定の間隔を置き、この例の変形部材は、その支柱２の上部と補助杆３の上部とを連結する連結材１３又は／及び補助杆３であり、この連結材１３は、支柱２及び補助杆３と同一のＨ型鋼からなり、補助杆３の下端を自由端としている。 FIG. 10 shows a second embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments and reference examples, and detailed description thereof will be omitted. The deformable member of this example is a connecting member 13 and / or an auxiliary rod 3 that connects the upper portion of the column 2 and the upper portion of the auxiliary rod 3, and the connecting member 13 includes the column 2 and the auxiliary rod 3. It consists of the same H-shaped steel as the auxiliary rod 3, and the lower end of the auxiliary rod 3 is a free end.

したがって、補助杆３の下部に落石Ｒが衝突すると、補助杆３と連結材１３との連結箇所、補助杆３、連結材１３と支柱２との連結箇所の少なくとも１つが変形し、この変形により落石Ｒの衝撃エネルギーを吸収することができる。 Therefore, when the falling rock R collides with the lower part of the auxiliary rod 3, at least one of the connecting portion between the auxiliary rod 3 and the connecting member 13 and the connecting portion between the auxiliary rod 3 and the connecting member 13 and the support column 2 is deformed. The impact energy of the falling rock R can be absorbed.

このように本実施例では、所定の間隔で複数の支柱２，２を設け、支柱２，２間に防護面たる網体６を設け、落石Ｒにより変形する変形部材を設けた防護柵であって、支柱２の前方に、落石を受ける前面である落石受面８を有する補助杆３を設けると共に、この補助杆３と支柱２との間に間隔を設け、変形部材が連結材１３又は／及び補助杆３であるから、支柱２の下部に向った落石Ｒが補助杆３に衝突すると、連結材１３又は／及び補助杆３が変形して衝撃エネルギーを吸収することができる。 As described above, in this embodiment, the protection fence is provided with a plurality of support columns 2 and 2 at a predetermined interval, the net body 6 serving as a protection surface between the support columns 2 and 2, and a deformable member deformed by the falling rock R. In addition, an auxiliary rod 3 having a rockfall receiving surface 8 which is a front surface for receiving rockfall is provided in front of the column 2, and a space is provided between the auxiliary rod 3 and the column 2 so that the deformable member is a connecting member 13 or / And since it is the auxiliary rod 3, if the falling rock R which faces the lower part of the support | pillar 2 collides with the auxiliary rod 3, the connection material 13 or / and the auxiliary rod 3 will deform | transform and can absorb impact energy.

また、このように本実施例では、支柱２と補助杆３とを連結する連結材１３を備え、連結材１３は補助杆３の下端より上方に位置するから、補助杆３が衝撃力を受けると、補助杆３の下端を支柱２に近づける力により連結材１３又は／及び補助杆３が変形し、この変形により衝撃エネルギーが吸収される。 Further, in the present embodiment thus, a connecting member 1 3 for connecting the strut 2 and the auxiliary rod 3, because connecting member 13 is positioned above the lower end of the auxiliary rod 3, the auxiliary lever 3 is an impact When received, the connecting member 13 and / or the auxiliary rod 3 is deformed by the force that brings the lower end of the auxiliary rod 3 close to the support column 2, and the impact energy is absorbed by this deformation.

また、実施例上の効果として、支柱２と補助杆３と上部側を連結材１３のみによって連結しているが、補助杆３が落石Ｒを受けた場合、支柱２の下部側にその衝撃力が直接伝わることがない。 Further, as an effect on the embodiment, the support column 2 and the auxiliary rod 3 are connected to the upper side only by the connecting material 13, but when the auxiliary rod 3 receives the falling rock R, the impact force is applied to the lower side of the column 2. Is not transmitted directly.

図１１は本発明の実施例３を示し、上記各実施例及び参考例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例の変形部材は、支柱２の上部と補助杆３の上部とを連結する前記連結材１３又は／及び補助杆３であり、補助杆３は、下端を前側に出して斜設されている。 FIG. 11 shows a third embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments and reference examples, and the detailed description thereof will be omitted. The connecting member 13 and / or the auxiliary rod 3 for connecting the upper portion of the auxiliary rod 3 and the upper portion of the auxiliary rod 3 are provided obliquely with the lower end thereof extended forward.

したがって、実施例２に比べて、補助杆３の下端が支柱２の前面２１に衝突するまでの変形量を大きく取ることができ、衝撃吸収効果が向上する。尚、言い換えれば、衝突前と衝突後の補助杆３の角度を大きく取ることができる。 Therefore, compared with Example 2 , the deformation amount until the lower end of the auxiliary rod 3 collides with the front surface 21 of the support column 2 can be increased, and the impact absorption effect is improved. In other words, the angle of the auxiliary rod 3 before and after the collision can be increased.

図１２は本発明の実施例４を示し、上記各実施例及び参考例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例の変形部材は、支柱２と補助杆３とを連結する前記連結材１３又は／及び補助杆３であって、支柱２の高さ方向中央より上部側に連結材１３が配置されている。 FIG. 12 shows a fourth embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments and reference examples, and detailed description thereof will be omitted. The connecting member 13 is connected to the auxiliary rod 3 and / or the auxiliary rod 3 , and the connecting member 13 is disposed on the upper side of the column 2 in the height direction.

このように本実施例では、上記実施例及び参考例と同様な作用・効果を奏する。 As described above, in this embodiment, the same operations and effects as the above-described embodiment and the reference example are obtained.

図１３及び図１４は本発明の実施例５を示し、上記各実施例及び参考例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例では、実施例２などにおいて、補助杆３の下部と支柱２の下部との間に、前記屈曲材１２を配置している。尚、補助杆３の後面２２と屈曲材１２の先端とを固定せずに、当接するようにしてもよいし、補助杆３の後面２２に対して屈曲材１２の先端をスライド可能に連結してもよい。 13 and 14 show a fifth embodiment of the present invention. The same reference numerals are given to the same parts as those of the above-described embodiments and reference examples, and detailed description thereof will be omitted. 2 and the like, the bending material 12 is disposed between the lower part of the auxiliary rod 3 and the lower part of the support column 2. Note that the the surface 22 of the auxiliary lever 3 and the tip of the bending member 12 without fixing, may be abutting, the distal end of the bending member 12 slidably coupled with respect to the rear surface 22 of the auxiliary lever 3 May be.

したがって、この例では、補助杆３に落石Ｒを受けると、下部の屈曲材１２及び上部の連結材１３又は／及び補助杆３が変形して衝撃エネルギーを吸収することができる。 Therefore, in this example, when the falling stone R is received by the auxiliary rod 3, the lower bending material 12 and the upper connecting member 13 or / and the auxiliary rod 3 can be deformed to absorb the impact energy .

また、このように本実施例では、補助杆３の下部と支柱２との間に、落石Ｒにより変形する変形部材たる屈曲材１２を設けたから、この例では、連結材１３又は／及び補助杆３の変形に加えて、屈曲材１２が変形し、これらの変形により衝撃エネルギーを吸収することができる。 Further, in this embodiment, since the bending material 12 which is a deforming member that is deformed by the falling rock R is provided between the lower portion of the auxiliary rod 3 and the support column 2, in this example, the connecting material 13 and / or the auxiliary rod is provided. In addition to the third deformation, the bending material 12 is deformed, and the impact energy can be absorbed by these deformations.

参考例５
図１５は本発明の参考例５を示し、上記各実施例及び参考例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例では、支柱２の前面２１に前記水平ロープ材４と前記網体６とを設けており、上記各実施例及び参考例において同様の構成を採用することができ、補助杆３を設けることにより、防護面の設置箇所を増やすことができる。 Reference Example 5
FIG. 15 shows a reference example 5 of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments and reference examples, and detailed description thereof will be omitted. In this example, the front surface 21 of the column 2 is shown. The horizontal rope member 4 and the net body 6 are provided in the same manner, and the same configuration can be adopted in each of the above-described embodiments and reference examples . By providing the auxiliary rod 3, the number of installation points of the protective surface is increased. be able to.

尚、本発明は、前記実施例に限定されるものではなく、種々の変形実施が可能である。例えば、各実施例の変形部材を適宜組み合わせて使用することができる。また、補助杆３は落石受面が平坦なものが好ましいが、これに限定されず、落石受面が曲面などでもよく、支柱２に円形などの鋼管を用いてもよい。さらに、補助杆，支柱及び変形部材は鋼製に限らず、コンクリート製や強化プラスチック製などもよい。また、支柱は必ずしもコンクリート基礎に固定して設ける必要はなく、支柱を地盤に建て込んだり、適宜手段により設定場所に固定すればよい。また、屈曲材は湾曲状に屈曲していてもよい。 In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible. For example, the deformation members of the respective embodiments can be used in appropriate combination. In addition, the auxiliary trap 3 preferably has a flat rock-receiving surface, but is not limited to this, and the rock-falling surface may be a curved surface or a circular steel pipe may be used for the support column 2. Further, the auxiliary rod, the support column, and the deformable member are not limited to steel but may be made of concrete or reinforced plastic. Moreover, it is not always necessary to fix the column to the concrete foundation, and the column may be built on the ground or fixed to the set place by appropriate means. Further, the bending material may be bent in a curved shape.

本発明の参考例１を示す要部の側面図である。It is a side view of the principal part which shows the reference example 1 of this invention. 同上、要部の平面図である。It is a top view of the principal part same as the above. 同上、防護柵の正面図である。It is a front view of a protection fence same as the above. 本発明の参考例２を示す要部の側面図である。It is a side view of the principal part which shows the reference example 2 of this invention. 同上、要部の平面図である。It is a top view of the principal part same as the above. 同上、変形部材の変形状態を説明する要部の平面図である。It is a top view of the principal part explaining the deformation | transformation state of a deformation member same as the above. 本発明の参考例３を示す要部の側面図である。It is a side view of the principal part which shows the reference example 3 of this invention. 本発明の参考例４を示す要部の平面図である。It is a top view of the principal part which shows the reference example 4 of this invention. 本発明の実施例１を示す要部の側面図である。It is a side view of the principal part which shows Example 1 of this invention. 本発明の実施例２を示す要部の側面図である。It is a side view of the principal part which shows Example 2 of this invention. 本発明の実施例３を示す要部の側面図である。It is a side view of the principal part which shows Example 3 of this invention. 本発明の実施例４を示す要部の側面図である。It is a side view of the principal part which shows Example 4 of this invention. 本発明の実施例５を示す要部の側面図である。It is a side view of the principal part which shows Example 5 of this invention. 同上、要部の平面図である。It is a top view of the principal part same as the above. 本発明の参考例５を示す要部の側面図である。It is a side view of the principal part which shows the reference example 5 of this invention.

１コンクリート基礎（基礎・被固定部）
２支柱
３補助杆
６網体（防護面）
７防護体
８落石受面（落石を受ける前面）
１１リング材（変形部材）
１２屈曲材（変形部材）
１３連結部（変形部材）
２１前面
２２後面
1 Concrete foundation (foundation / fixed part)
2 Prop 3 Auxiliary rod 6 Net (protective surface)
7 Protective body 8 Falling stone receiving surface (front receiving rock falling)
11 Ring material (deformable member)
12 Bending material (deformable member)
13 Connecting part (deformable member)
21 Front 22 Rear

Claims

A plurality of struts disposed at predetermined intervals, the protective surface provided between the struts, a safety barrier provided with an auxiliary rod to the strut, in front of the strut, the auxiliary rod having a front surface for receiving a rockfall And providing a space between the auxiliary rod and the support rod, and a connecting material for connecting the support rod and the auxiliary rod, the connecting material is disposed on the upper side from the center in the height direction of the support column, A protective fence characterized in that the auxiliary fence or / and the connecting member are deformed by falling rocks .

A plurality of struts disposed at predetermined intervals, the protective surface provided between the struts, a safety barrier having a deformable member which is deformed by falling rock, in front of the strut, the auxiliary rod having a front surface for receiving a rockfall provided with an interval between the auxiliary rod the strut is provided, as well as arranged in a plurality of stages spaced said deformable member vertically between said post and said auxiliary rods, the lower of the deformable member A protective fence characterized in that the strength is set to be greater than the strength of the deformable member in the upper stage .

The protective fence according to claim 2, wherein the deformable member is a ring material, and an outer periphery of the ring material is sandwiched between the support column and an auxiliary rod.

Wherein the deformable member, fences according to claim 2, wherein the bent is bent material between the post and the auxiliary rod.

Towards the axis of the ring member in the longitudinal direction, a width of at least one of the ring member side face of the strut and the auxiliary rod is protection of claim 3, wherein a smaller than the diameter of the ring member fence.

Wherein between the lower and the strut of the auxiliary lever, safety barriers according to claim 1, characterized in that a deformable member which is deformed by falling rock.