JP3366976B2 - Shock absorbing protective fence and shock absorbing method - Google Patents
Shock absorbing protective fence and shock absorbing methodInfo
- Publication number
- JP3366976B2 JP3366976B2 JP05472499A JP5472499A JP3366976B2 JP 3366976 B2 JP3366976 B2 JP 3366976B2 JP 05472499 A JP05472499 A JP 05472499A JP 5472499 A JP5472499 A JP 5472499A JP 3366976 B2 JP3366976 B2 JP 3366976B2
- Authority
- JP
- Japan
- Prior art keywords
- net
- columns
- elastic
- shock
- protection fence
- 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
Links
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Vibration Dampers (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は大型落下物、自動
車、鉄道、航空機等のオーバーラン抑止施設として適用
できる衝撃吸収防護柵および衝撃吸収方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorbing protective fence and a shock absorbing method applicable as an overrun suppressing facility for large-sized fallen objects, automobiles, railways, airplanes and the like.
【０００２】[0002]
【従来の技術】斜面に所定の間隔を隔てて立設した剛性
の支柱間にロープ製の防護ネットを張り巡らし、防護ネ
ットの変形強度と支柱の剛性で以って落石を受止める落
石防護柵は周知である。2. Description of the Related Art A rock fall protection fence that stretches rope protection nets between rigid support pillars that are erected at a predetermined interval on a slope and receives rockfalls by the deformation strength of the protection net and the rigidity of the support pillars. Is well known.
【０００３】また剛性の支柱に複数の緩衝具を取り付
け、各緩衝具に複数の横ロープ材を把持させて横架し、
横ロープ材と緩衝具間の摺動摩擦抵抗により衝撃エネル
ギーを減衰する落石防護柵も提案されている。Further, a plurality of shock absorbers are attached to a rigid column, and a plurality of horizontal rope members are gripped by the shock absorbers so as to be horizontally mounted.
A rock fall protection fence that attenuates impact energy by sliding frictional resistance between the horizontal rope material and the shock absorber has also been proposed.
【０００４】またロープ材を円形に丸め、その両端を固
定してリング体を形成し、このリング体の内周を相互に
接触させて鎖状に形成したネットが特開平１０−８８５
２７号公報に開示されている。Also, a net formed by rolling a rope material into a circle and fixing both ends of the rope material to form a ring body, and contacting the inner circumferences of the ring body with each other to form a chain is disclosed in JP-A-10-885.
No. 27 publication.
【０００５】[0005]
【発明が解決しようとする課題】＜イ＞ 従来の落石防
護柵においては、落石を受け止めできる運動エネルギー
が最大で１５００ＫＪ程度と低く、それ以上の運動エネ
ルギーに対応可能な工法は未だ提案されていない。殊に
国上の狭い我が国においては、山岳地帯に建設した道路
や鉄道が落石の危険に晒されていて、大型の落石事故を
防止できる新技術の開発が切望されている。<A> In the conventional rockfall protection fence, the kinetic energy that can receive rockfall is as low as about 1500 KJ at maximum, and a construction method capable of handling more kinetic energy has not been proposed yet. . Particularly in Japan, which is a narrow country, roads and railways constructed in mountainous areas are exposed to the risk of rockfalls, and there is a strong demand for the development of new technology that can prevent large-scale rockfall accidents.
【０００６】＜ロ＞ 従来の落石防護柵は、落石の衝撃
エネルギーを支柱間に張ったネットで吸収し、支柱自身
にエネルギー吸収作用を期待していない。そのため、落
石が直接支柱に衝突すると、落石防護柵本来の減衰性能
を発揮できず、支柱が落石防護柵の強度的弱点となって
いる。<B> In the conventional rockfall protection fence, the impact energy of rockfall is absorbed by the net stretched between the columns, and the columns themselves are not expected to absorb energy. Therefore, if the rockfall collides directly with the support pillar, the original damping performance of the rockfall protection fence cannot be exhibited, and the support pillar is a weak point of strength of the rockfall protection fence.
【０００７】本発明は以上の点に鑑み成されたもので、
その目的とするところは、衝撃エネルギーの減衰効果が
格段に向上し、４０００ＫＪ以上の運動エネルギーを有
する物体を停止させることが可能な、衝撃吸収技術を提
供することにある。The present invention has been made in view of the above points,
It is an object of the present invention to provide a shock absorbing technology capable of significantly improving the shock energy damping effect and stopping an object having a kinetic energy of 4000 KJ or more.
【０００８】[0008]
【課題が解決するための手段】請求項１に係る発明は、
所定の間隔を隔てて支柱を立設し、前記支柱間にネット
を張り巡らした衝撃吸収防護柵において、前記支柱がそ
の全長に亘って弾性変形する弾性支柱であり、前記ネッ
ト又は弾性支柱に作用した衝撃を前記弾性支柱の軸方向
の圧縮力として作用せしめるように、前記ネットの上縁
部を弾性支柱に取り付けると共に、前記ネットの下縁部
を地表に取り付けたことを特徴とする、衝撃吸収防護柵
である。請求項２に係る発明は、所定の間隔を隔てて支
柱を立設し、前記支柱間にネットを張り巡らした衝撃吸
収防護柵において、前記支柱がその全長に亘って弾性変
形する弾性支柱であり、前記ネット又は弾性支柱に作用
した衝撃を前記弾性支柱の軸方向の圧縮力として作用せ
しめるように、前記ネットの上縁部及び下縁部を弾性支
柱に取り付けたことを特徴とする、衝撃吸収防護柵であ
る。請求項３に係る発明は、請求項１又は請求項２に記
載の衝撃吸収防護柵において、逆Ｕ字形に曲げた弾性支
柱の両端部を地上に接地させて立設したことを特徴とす
る、衝撃吸収防護柵である。請求項４に係る発明は、請
求項１又は請求項２に記載の衝撃吸収防護柵において、
弾性支柱の上部に地表から延びる控えロープを接続して
傾倒を抑制すると共に、前記控えロープの中途に一定以
上の張力が作用すると摺動する緩衝装置を介装したこと
を特徴とする、衝撃吸収防護柵である。請求項５に係る
発明は、請求項１乃至請求項４の何れかに記載の衝撃吸
収防護柵において、ネットがループ状に形成したロープ
材の重合部を緩衝具で縮径可能に把持して縦横方向に連
鎖する単体輪の集合体として形成されたループネットで
あることを特徴とする、衝撃吸収防護柵である。請求項
６に係る発明は、所定の間隔を隔てて立設した支柱間に
ネットを張り巡らし、支柱の剛性とネットの変形力で衝
撃を吸収する方法において、前記請求項１乃至請求項５
の何れかに記載の衝撃吸収防護柵を使用し、衝撃をネッ
トで包み込むように受け止めながら、衝撃エネルギーを
弾性支柱の軸方向の圧縮力として作用せしめ、弾性支柱
の全長に亘る弾性変形により減衰することを特徴とす
る、衝撃吸収方法である。The invention according to claim 1 is
In a shock absorption protection fence in which columns are erected at a predetermined interval and a net is stretched around the columns, the columns are elastic columns that are elastically deformed over their entire length, and act on the net or the elastic columns. The shock absorption, characterized in that the upper edge of the net is attached to the elastic strut and the lower edge of the net is attached to the surface of the earth so that the impact is exerted as a compressive force in the axial direction of the elastic strut. It is a protective fence. According to a second aspect of the present invention, in a shock absorption protection fence in which columns are erected at a predetermined interval and a net is stretched between the columns, the columns are elastic columns that are elastically deformed over their entire length. Shock absorption, characterized in that the upper edge and the lower edge of the net are attached to the elastic support so that the impact acting on the net or the elastic support acts as a compressive force in the axial direction of the elastic support. It is a protective fence. The invention according to claim 3 is the shock absorbing protection fence according to claim 1 or 2, characterized in that both ends of the elastic pillar bent in an inverted U shape are grounded to the ground. It is a shock absorption protection fence. The invention according to claim 4 is the shock absorption protection fence according to claim 1 or 2,
A shock absorber characterized by connecting a restraint rope extending from the ground surface to the upper part of the elastic column to suppress tilting and interposing a shock absorber that slides when a certain tension or more acts in the middle of the restraint rope. It is a protective fence. According to a fifth aspect of the present invention, in the impact absorption protection fence according to any one of the first to fourth aspects, the overlapping portion of the rope material, in which the net is formed in a loop shape, is gripped by a cushioning tool so that the diameter can be reduced. It is a shock absorption protection fence characterized by being a loop net formed as an assembly of single wheels linked in the vertical and horizontal directions. The invention according to claim 6 is a method in which a net is stretched between columns that are erected at a predetermined interval, and the impact is absorbed by the rigidity of the columns and the deforming force of the net.
Using the shock-absorbing protective fence described in any one of the above items, the impact energy is applied as a compressive force in the axial direction of the elastic strut while receiving the impact as if wrapped by a net, and attenuated by elastic deformation over the entire length of the elastic strut. It is a shock absorbing method characterized by the above.
【０００９】[0009]
【発明の実施の形態１】以下図面を参照しながら本発明
の実施の形態１について説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 of the present invention will be described below with reference to the drawings.
【００１０】（イ）衝撃吸収防護柵の基本構成
図１に衝撃吸収防護柵の横断面図を示す。衝撃吸収防護
柵柵は斜面１Ｏに所定の間隔を隔てて立設した弾性支柱
２０と、弾性支柱２０に張り巡らしたループネット３０
よりなる。以下各部について詳述する。(A) Basic structure of shock absorption protection fence FIG. 1 shows a cross-sectional view of the shock absorption protection fence. The shock-absorbing protective fence fence is made up of elastic columns 20 standing upright on the slope 1O at a predetermined interval, and loop nets 30 stretched around the elastic columns 20.
Consists of. Each part will be described in detail below.
【００１１】（ロ）弾性支柱
弾性支柱２０は剛性と弾性を併有する柱体で、その下部
が斜面１０に横移動不能に埋設又は載置されていて、そ
の上部に山側控えロープ２１と谷側控えロープ２２が接
続してあって、各控えロープ２１，２２の他端が斜面側
のアンカー１１，１２に接続されている。本例では山側
控えロープ２１の中途に、摺動摩擦抵抗によリエネルギ
ーを減衰する公知の緩衝装置２３を介装した場合につい
て示すが、緩衝装置２３は必須の要素ではない。(B) Elastic support column The elastic support column 20 is a column body having both rigidity and elasticity, and the lower part thereof is embedded or placed on the slope 10 so as not to move laterally, and the mountain side retaining rope 21 and the valley side are provided on the upper part thereof. A retaining rope 22 is connected, and the other ends of the retaining ropes 21 and 22 are connected to the anchors 11 and 12 on the slope side. In this example, a case where a known shock absorbing device 23 that attenuates re-energy due to sliding friction resistance is interposed in the middle of the mountain side restraint rope 21 is shown, but the shock absorbing device 23 is not an essential element.
【００１２】弾性支柱２０は例えば、多数の塑性変形し
難い鋼製、樹脂製の弾性線材群を並べて柱体に形成した
り、ばね鋼をコイル状に成形したものを含み、要は衝撃
力が支柱２０の剛性を超えたとき、支柱２０がその全長
に亘り弾性変形して衝撃エネルギーを減衰できる素材と
構造であればよい。The elastic support column 20 includes, for example, a large number of steel or resin elastic wire rods that are hard to be plastically deformed to form a columnar body, or spring steel formed into a coil shape. Any material and structure can be used so that when the rigidity of the pillar 20 is exceeded, the pillar 20 is elastically deformed over its entire length to attenuate impact energy.
【００１３】（ハ）ループネット
ループネット３０はロープ材を用いて、縮径可能な連鎖
した単体輪の集合体に形成すると共に、各ロープ材の重
合部に緩衝具４０を付設した衝撃吸収作用を有するネッ
トで、その上端縁が弾性支柱２０の上部に摺動不能又は
斜面１０の横方向に向け摺動可能に取り付けられ、また
その下端が斜面１０のアンカー１３に摺動不能又は斜面
１０の横方向に向け摺動可能に取り付けられている。図
１ではループネット３０の下部を弾性支柱２０の山側に
取り付けた場合を示すが、谷側であっても良い。(C) Loop net The loop net 30 is formed of an aggregate of chained single wheels that can be reduced in diameter by using a rope material, and a shock absorbing function is provided by attaching a shock absorber 40 to the overlapping portion of each rope material. Of the net, the upper end of which is attached to the upper part of the elastic column 20 so as not to be slidable or slidable in the lateral direction of the slope 10, and the lower end of which is attached to the anchor 13 of the slope 10 so as not to be slidable or of the slope 10. It is mounted slidably in the lateral direction. Although FIG. 1 shows the case where the lower part of the loop net 30 is attached to the mountain side of the elastic column 20, it may be the valley side.
【００１４】図２に例示したループネット３０について
説明すると、ループネット３０は複数の連続輪要素３１
ａ，３１ｂ，３１ｃ…と、複数の緩衝具４０とにより構
成される。各連続輪要素３１ａ，３１ｂ，３１ｃ…は隣
接して係合されている。ここで「係合」とは、ロープ材
の巻き掛けの有無に関係なく、ロープ材が相互に力の伝
達を可能とする状態を意味する。Explaining the loop net 30 illustrated in FIG. 2, the loop net 30 has a plurality of continuous wheel elements 31.
a, 31b, 31c ... And a plurality of shock absorbers 40. The continuous wheel elements 31a, 31b, 31c ... Are engaged adjacent to each other. Here, “engagement” means a state in which the rope materials can mutually transmit force, regardless of whether or not the rope materials are wrapped around.
【００１５】尚、ループネット３０の向きは図２に示す
向きに限定されるものではなく、例えば図の上下を反対
にしたり、或いは図を９０度、又は４５度回転した状態
であってもよい。The orientation of the loop net 30 is not limited to the orientation shown in FIG. 2, but the upper and lower sides of the figure may be reversed, or the figure may be rotated by 90 degrees or 45 degrees. .
【００１６】連続輸要素３１ａは１本のロープ材をルー
プ形状（又はスパイラルを展開した形状）に編成した複
数の単休輪３２ａ，３２ａ…の連続体により構成され
る。他の連続輪要素３１ｂ，３１ｃ…についても同様
に、１本のロープ材をもとに素材的に連続した複数の単
休輪３２，３２ｂ…、３２ｃ，３２ｃ…により構成され
る。The continuous transfer element 31a is composed of a continuous body of a plurality of single suspension rings 32a, 32a ... In which a single rope material is knitted into a loop shape (or a spiral expanded shape). Similarly, the other continuous wheel elements 31b, 31c ... Are composed of a plurality of single rest wheels 32, 32b ..., 32c, 32c.
【００１７】各単体輸３２ａ，３２ｂ，３２ｃ…間は相
互に係合して縦横方向に連続性が付与されていて、引張
力等の外力が作用したとき、各単体輪３２ａ，３２ｂ，
３２ｃ…の内径が小さく変化する構造になっている。本
例では各単体輸３２ａ，３２ｂ，３２ｃ…の間を巻き掛
けて係合させた場合について示すが、巻き掛けせずに緩
衝具で接続して係合させるようにしてもよい。Each of the unit wheels 32a, 32b, 32c ... Is engaged with each other to provide continuity in the vertical and horizontal directions, and when an external force such as a tensile force acts, the unit wheels 32a, 32b ,.
The structure is such that the inner diameter of 32c ... In the present example, a case is shown in which the individual single units 32a, 32b, 32c ... Are wound and engaged, but they may be connected and engaged by a shock absorber without being wound.
【００１８】またループネット３０を構成するロープ材
は、ワイヤロープが好適であるが、ＰＣ鋼線、ＰＣ鋼よ
り線や炭素繊維、アラミド繊維も使用可能である。The rope material forming the loop net 30 is preferably a wire rope, but PC steel wire, PC stranded wire, carbon fiber, and aramid fiber can also be used.
【００１９】（ニ）緩衝具
緩衝具４０はロープ材の交差部にそ両側から把持し、設
定した把持力（摺動摩擦抵抗）を越える過大な外力（引
張力）が作用したときにロープ材との間で摺動抵抗を発
生する構造で、少なくとも各単体輪３２ａ，３２ｂ，３
２ｃ…に夫々１つ取り付けられる。図示しないが、緩衝
具４０は縦横方向に隣接する各単体輪３２ａ，３２ｂ，
３２ｃ…の隣接部（交差部）に追加して設けてもよい。(D) Cushioning tool Cushioning tool 40 is gripped from both sides at the intersection of the rope material, and when an excessive external force (tensile force) exceeding the set gripping force (sliding friction resistance) is applied, A structure that generates sliding resistance between at least the individual wheels 32a, 32b, 3
One is attached to each of 2c ... Although not shown, the shock absorber 40 includes the individual wheels 32a, 32b, which are adjacent to each other in the vertical and horizontal directions.
It may be additionally provided in the adjacent portion (intersection portion) of 32c.
【００２０】図３を基に緩衝具４０について説明する
と、緩衝具４０は、２枚の把持板４１，４１と、これら
の把持板４１，４１を締結する締結ボルト４２及びナッ
ト４３とよりなる。The shock absorber 40 will be described with reference to FIG. 3. The shock absorber 40 is composed of two grip plates 41, 41, and a fastening bolt 42 and a nut 43 for fastening the grip plates 41, 41.
【００２１】把持板４１，４１の対向面には、夫々断面
半円形の収容溝４４が凹設されている。これらの収容溝
４４は各単体輪３２ａ、（３２ｂ，３２ｃ…）を構成す
るロープ材の二箇所を収容して把持できるようになって
いる。On the opposite surfaces of the grip plates 41, 41, accommodating grooves 44 each having a semicircular cross section are provided. These accommodating grooves 44 are adapted to accommodate and grip two portions of the rope material constituting each single wheel 32a, (32b, 32c ...).
【００２２】上記した緩衝具４０は一例であり、その他
に３枚の板体の間にロープ材の二箇所を挟み込み、ボル
ト、ナットで締め付けて把持する構造の治具や、公知の
ワイヤクリップ等を使用できるThe above-described shock absorber 40 is an example, and in addition, a jig having a structure in which two portions of the rope material are sandwiched between three plate bodies and clamped by bolts and nuts, a known wire clip, etc. Can be used
【００２３】[0023]
【作用】次に衝撃吸収作用について説明する。
（イ）衝撃吸収要素
衝撃吸収防護柵に落石等の衝撃が作用した場合、以下に
説明するループネット３０及び弾性支柱２０の減衰作用
によって落石等を包み込むように変形して受け止める。
便宜上、ループネット３０と弾性支柱２０の減衰作用を
個別に説明するが、実際は並行して作用する。Next, the shock absorbing function will be described. (A) Shock absorbing element When a shock such as a rock fall acts on the shock absorbing protection fence, it is deformed and received so as to wrap the rock fall due to the damping action of the loop net 30 and the elastic column 20 described below.
For the sake of convenience, the damping action of the loop net 30 and the elastic column 20 will be described separately, but in actuality, they act in parallel.
【００２４】（ロ）ループネットの衝撃吸収作用
ループネット３０の一部に作用した衝撃はネット全体に
分散され、まず、ネット全体の変形により減衰される。
さらに衝撃エネルギーは図２に示すループネット３０を
構成する単体輪２３ａ，３２ｂ，３２ｃ群が円形から非
円形に変形する際に、ロープ材の変形抵抗力により減衰
される。(B) Impact absorbing action of loop net The impact acting on a part of the loop net 30 is dispersed over the entire net, and is first damped by the deformation of the entire net.
Further, the impact energy is attenuated by the deformation resistance force of the rope material when the groups of the single wheels 23a, 32b, 32c forming the loop net 30 shown in FIG. 2 are deformed from circular to non-circular.
【００２５】さらにまた衝撃エネルギーは各単体輪３２
ａ，３２ｂ，３２ｃを構成する各ロープ材に引張力とし
て作用し、この引張力が緩衝具４０の把持力を越える
と、ロープ材が摺動して単体輪３２ａ，３２ｂ，３２ｃ
が縮径する際に、衝撃エネルギーが減衰される。各ロー
プ材の摺動に伴いループネット３０のネット面が斜面１
０の下流側へ向けて実質的に伸び、落石等を包み込みな
がら衝撃エネルギーを減表する。一般のネットは受撃体
箇所が開いて落石等が通過し易い傾向にあるが、ループ
ネット３０の場合は受撃箇所が縮径することから、落石
等が通過し難い。このように、ループネット３０に作用
した衝撃エネルギーは、ネット全体で複数の減衰作用に
より効率よく速やかに減衰される。Furthermore, the impact energy is determined by each individual wheel 32.
When a tensile force acts on each rope material constituting a, 32b, 32c and the tensile force exceeds the gripping force of the shock absorber 40, the rope material slides and the single wheels 32a, 32b, 32c.
The impact energy is attenuated when the diameter of the is reduced. With the sliding of each rope material, the net surface of the loop net 30 is a slope 1
It extends substantially toward the downstream side of 0, and reduces the impact energy while wrapping rock fall etc. In a general net, the location of the struck body tends to open, and falling rocks and the like tend to pass easily. However, in the case of the loop net 30, the diameter of the receiving location is reduced, so falling rocks and the like are difficult to pass through. As described above, the impact energy acting on the loop net 30 is efficiently and promptly attenuated by the plurality of damping actions in the entire net.
【００２６】（ハ）弾性支柱の衝撃吸収作用
ループネット３０を介して、或いは直接、弾性支柱２０
に衝撃が作用すると、衝撃エネルギーの一部は弾性支柱
２０の剛性で以って減衰される。ループネット３０の上
部のみが弾性支柱２０の上部に取り付けられているた
め、衝撃エネルギーは弾性支柱２０にその軸方向の圧縮
力として作用する。(C) Impact absorbing action of the elastic column The elastic column 20 is directly or via the loop net 30.
When a shock is applied to, a part of the shock energy is attenuated by the rigidity of the elastic column 20. Since only the upper part of the loop net 30 is attached to the upper part of the elastic column 20, the impact energy acts on the elastic column 20 as a compressive force in the axial direction.
【００２７】 この圧縮力が弾性支柱２０の強度を越え
ると、図４に示すように弾性支柱２０の中間部が一体的
に又は弾性線材群がバラケながら弾性変形し、この変形
時に衝撃エネルギーが減衰される。When the compressive force exceeds the strength of the elastic support column 20, as shown in FIG. 4, the intermediate part of the elastic support column 20 is elastically deformed integrally or while the elastic wire group is scattered, and the impact energy is attenuated during this deformation. To be done.
【００２８】また控えロープ２１に緩衝装置２３が介装
してある場合は、緩衝装置２３の摺動抵抗により衝撃エ
ネルギーが減衰される。落石等の通過後、或いは撤去後
において、弾性支柱２０は自己弾性力により元の形状に
復元する。If a shock absorber 23 is provided on the restraining rope 21, the shock energy is attenuated by the sliding resistance of the shock absorber 23. After passing a rock fall or the like, or after removing it, the elastic columns 20 are restored to their original shape by the self-elastic force.
【００２９】[0029]
【発明の実施の形態２】以降の説明に際し、既述した実
施の形態と同一の部位は同一の符号を付して構造や作用
についての詳しい説明を省略する。Second Embodiment In the following description, the same parts as those in the above-described embodiments are designated by the same reference numerals, and detailed description of the structure and operation will be omitted.
【００３０】図５はループネット３０の上下部を夫々弾
性支柱２０り上下部に摺動不能又は斜面１０の横方向に
向け摺動可能に取り付けた他の形態を示す。本例の基本
的な衝撃吸収作用は既述した実施の形態１と同様であ
る。FIG. 5 shows another embodiment in which the upper and lower parts of the loop net 30 are attached to the upper and lower parts of the elastic columns 20 so that they cannot slide or can be slid toward the lateral direction of the slope 10. The basic shock absorbing action of this example is similar to that of the first embodiment described above.
【００３１】[0031]
【発明の実施の形態３】図６に弾性支柱２０を逆∪字形
に折曲し、その両端部を斜面１０に固定した他の形態を
示す。Embodiment 3 of the Invention FIG. 6 shows another embodiment in which the elastic column 20 is bent in an inverted V shape and both ends thereof are fixed to the slope 10.
【００３２】図６の（Ａ）は先の実施の形態１と同様に
ループネット３０の上縁部を弾性支柱２０の起立部の上
部に取り付け、その下縁部を斜面１０のアンカー１３に
取り付けた形態を示し、図６の（Ｂ）はループネット３
０の上下縁部を弾性支柱２０の起立部に取り付けた例を
示す。6A, the upper edge of the loop net 30 is attached to the upper part of the upright portion of the elastic column 20, and the lower edge thereof is attached to the anchor 13 of the slope 10, as in the first embodiment. FIG. 6B shows the loop net 3
An example in which the upper and lower edge portions of 0 are attached to the upright portion of the elastic column 20 is shown.
【００３３】両形態共にループネット３０により減衰作
用は既述した作用と同様であるが、本例は衝撃エネルギ
ーの作用時に、ループネット３０の取着されていない範
囲、すなわち弾性支柱２０の全長に亘る弾性を利用して
減衰できる利点がある。In both forms, the damping action by the loop net 30 is the same as the one already described, but in this example, when the impact energy acts, the damping force is applied to the area where the loop net 30 is not attached, that is, the entire length of the elastic column 20. There is an advantage that damping can be performed by utilizing elasticity over a range.
【００３４】[0034]
【発明の実施の形態４】ループネット３０は図７に示す
ように独立した単体輪３３を内接させて縦横方向に連鎖
させたネットであっても良い。各単休輪３３はループ状
に形成したロープ材の重合部を緩衝具４０で把持して形
成され、緩衝具４０から延びるロープ材が摺動を許容す
る余長部３４として形成される。符号３５はロープ材の
抜け出しを規制するストッパである。Fourth Embodiment As shown in FIG. 7, the loop net 30 may be a net in which independent single wheels 33 are inscribed and linked in the vertical and horizontal directions. Each single suspension ring 33 is formed by gripping the overlapping portion of the rope material formed in a loop shape with the cushioning tool 40, and the rope material extending from the cushioning tool 40 is formed as an extra length portion 34 that allows sliding. Reference numeral 35 is a stopper that restricts the rope material from coming out.
【００３５】[0035]
【発明の実施の形態５】以上はネットがループネット３
０である場合について説明したが、ネットはこの他に各
種公知のネットを適用できることは勿論である。本例の
場合、公知のネットの下部を地上に固定することは既述
した実施の形態１と同様である。Fifth Embodiment of the Invention In the above, the net is the loop net 3
Although the case of 0 has been described, it goes without saying that various known nets can be applied to the net. In the case of this example, fixing the lower part of the known net to the ground is the same as in the first embodiment described above.
【００３６】[0036]
【発明の効果】本発明は次の効果を得ることができる。
（イ） ネット及び弾性支柱の速やかでかつ効率のよい
減衰作用によって、衝撃エネルギーを受け止めることが
できる。
（ロ）弾性支柱とループネットを組み合わせた場合は、
衝撃エネルギーの減衰効果が格段に向上し、４０００Ｋ
Ｊ以上の運動エネルギーを有する物体をゆっくりと包み
込むようにして停止させることが可能となる。
（ハ） 巨大落石の防護柵としてだけでなく、オーバー
ランした航空機や列車或いは自動車の非常停止柵として
も活用することができる。The present invention can obtain the following effects. (B) The impact energy can be received by the quick and efficient damping action of the net and the elastic column. (B) When combining the elastic support and the loop net,
The impact energy damping effect is dramatically improved, and 4000K
It becomes possible to slowly wrap up an object having a kinetic energy of J or more and stop it. (C) It can be used not only as a protective fence for huge rockfalls but also as an emergency stop fence for overrun aircraft, trains, or automobiles.
【図１】 本発明に係る衝撃吸収防護柵の縦断面図FIG. 1 is a vertical sectional view of a shock absorption protection fence according to the present invention.
【図２】 ループネットの正面図[Figure 2] Front view of loop net
【図３】 図２におけるIII-IIIの断面図FIG. 3 is a sectional view taken along line III-III in FIG.
【図４】 衝撃吸収作用の説明図FIG. 4 is an explanatory diagram of a shock absorbing action.
【図５】 ループネットの上下部を弾性支柱２０に取り
付けた他の実施の形態に係る衝撃吸収防護柵の断面図FIG. 5 is a cross-sectional view of an impact absorption protection fence according to another embodiment in which upper and lower parts of a loop net are attached to elastic columns 20.
【図６】 逆Ｕ字形の弾性支柱を用いた他の実施の形態
に係る衝撃吸収防護柵の断面図FIG. 6 is a cross-sectional view of a shock absorption protection fence according to another embodiment using an inverted U-shaped elastic column.
【図７】 他の実施の形態に係るループネットの正面図FIG. 7 is a front view of a loop net according to another embodiment.
１０ 斜面 ２０ 弾性支柱 ２１，２２ 控えロープ ２３ 緩衝装置 ３０ ループネット ４０ 緩衝具 10 slopes 20 elastic columns 21,22 copy rope 23 Shock absorber 30 loop net 40 shock absorber
───────────────────────────────────────────────────── フロントページの続き (73)特許権者 596183125 株式会社シビル 新潟市鳥屋野３丁目14番13号 (72)発明者 吉田 博 富山県小矢部市水島561番地 (56)参考文献 特開 平10−88527（ＪＰ，Ａ) 特開 平５−295713（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E01F 7/04 F16F 7/00 - 7/14 ─────────────────────────────────────────────────── ─── Continuation of the front page (73) Patent holder 596183125 3-14-13 Toriyano, Civil Co., Ltd. Niigata City (72) Inventor Hiroshi Yoshida 561 Mizushima, Oyabe City, Toyama Prefecture (56) References Japanese Patent Laid-Open No. 10- 88527 (JP, A) JP-A-5-295713 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) E01F 7/04 F16F 7/ 00-7/14
Claims (6)
記支柱間にネットを張り巡らした衝撃吸収防護柵におい
て、 前記支柱がその全長に亘って弾性変形する弾性支
柱であり、 前記ネット又は弾性支柱に作用した衝撃を前記弾性支柱
の軸方向の圧縮力として作用せしめるように、前記ネッ
トの上縁部を弾性支柱に取り付けると共に、 前記ネットの下縁部を地表に取り付けたことを特徴とす
る、 衝撃吸収防護柵。1. A shock absorbing protective fence in which columns are erected at a predetermined interval and a net is stretched between the columns, wherein the columns are elastic columns that are elastically deformed over their entire length. Alternatively, the upper edge of the net is attached to the elastic strut and the lower edge of the net is attached to the ground so that the impact acting on the elastic strut acts as a compressive force in the axial direction of the elastic strut. A shock-absorbing protective fence.
記支柱間にネットを張り巡らした衝撃吸収防護柵におい
て、 前記支柱がその全長に亘って弾性変形する弾性支柱であ
り、 前記ネット又は弾性支柱に作用した衝撃を前記弾性支柱
の軸方向の圧縮力として作用せしめるように、前記ネッ
トの上縁部及び下縁部を弾性支柱に取り付けたことを特
徴とする、 衝撃吸収防護柵。2. A shock absorption protection fence in which columns are erected at a predetermined interval and a net is stretched between the columns, wherein the columns are elastic columns that are elastically deformed over their entire length. Alternatively, an impact absorption protection fence, characterized in that the upper edge and the lower edge of the net are attached to the elastic columns so that the impact acting on the elastic columns can act as a compressive force in the axial direction of the elastic columns.
収防護柵において、逆Ｕ字形に曲げた弾性支柱の両端部
を地上に接地させて立設したことを特徴とする、衝撃吸
収防護柵。3. The shock absorption protection fence according to claim 1 or 2, characterized in that both ends of an elastic column bent in an inverted U shape are erected while being grounded to the ground. fence.
収防護柵において、弾性支柱の上部に地表から延びる控
えロープを接続して傾倒を抑制すると共に、前記控えロ
ープの中途に一定以上の張力が作用すると摺動する緩衝
装置を介装したことを特徴とする、衝撃吸収防護柵。4. The shock-absorbing protection fence according to claim 1, wherein a restraint rope extending from the surface of the earth is connected to the upper part of the elastic column to suppress tilting, and a certain amount or more is provided in the middle of the restraint rope. A shock-absorbing protective fence that is equipped with a shock absorber that slides when tension is applied.
の衝撃吸収防護柵において、ネットがループ状に形成し
たロープ材の重合部を緩衝具で縮径可能に把持して縦横
方向に連鎖する単体輪の集合体として形成されたループ
ネットであることを特徴とする、衝撃吸収防護柵。5. The shock-absorbing protection fence according to claim 1, wherein the overlapped portion of the rope material, in which the net is formed in a loop shape, is held by a cushioning tool so that the overlapped portion can be reduced in length and width directions. A shock absorption protection fence, which is a loop net formed as an assembly of chained single wheels.
ネットを張り巡らし、支柱の剛性とネットの変形力で衝
撃を吸収する方法において、 前記請求項１乃至請求項５の何れかに記載の衝撃吸収防
護柵を使用し、 衝撃をネットで包み込むように受け止めながら、衝撃エ
ネルギーを弾性支柱の軸方向の圧縮力として作用せし
め、弾性支柱の全長に亘る弾性変形により減衰すること
を特徴とする、 衝撃吸収方法。6. A method in which a net is stretched around columns that are erected at a predetermined interval and the impact is absorbed by the rigidity of the columns and the deforming force of the net, and the method according to any one of claims 1 to 5. Using the described shock absorption protection fence, while receiving the shock as if wrapped with a net, the impact energy is made to act as a compressive force in the axial direction of the elastic strut, and it is attenuated by elastic deformation over the entire length of the elastic strut. Yes, shock absorption method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05472499A JP3366976B2 (en) | 1999-03-02 | 1999-03-02 | Shock absorbing protective fence and shock absorbing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05472499A JP3366976B2 (en) | 1999-03-02 | 1999-03-02 | Shock absorbing protective fence and shock absorbing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000248513A JP2000248513A (en) | 2000-09-12 |
| JP3366976B2 true JP3366976B2 (en) | 2003-01-14 |
Family
ID=12978761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05472499A Expired - Fee Related JP3366976B2 (en) | 1999-03-02 | 1999-03-02 | Shock absorbing protective fence and shock absorbing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3366976B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4560223B2 (en) * | 2001-03-01 | 2010-10-13 | 日本ゼニスパイプ株式会社 | Rock fall absorber |
| JP5019311B2 (en) * | 2006-11-07 | 2012-09-05 | 日鐵住金建材株式会社 | 8-shaped rope |
| CN104294834B (en) * | 2014-11-05 | 2015-12-02 | 宏大国源（芜湖）资源环境治理有限公司 | A kind of liftablely semi-automaticly domaticly block stone device |
-
1999
- 1999-03-02 JP JP05472499A patent/JP3366976B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000248513A (en) | 2000-09-12 |
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