JP3493619B2 - Buffer type guard fence and skeleton for it - Google Patents
Buffer type guard fence and skeleton for itInfo
- Publication number
- JP3493619B2 JP3493619B2 JP21767499A JP21767499A JP3493619B2 JP 3493619 B2 JP3493619 B2 JP 3493619B2 JP 21767499 A JP21767499 A JP 21767499A JP 21767499 A JP21767499 A JP 21767499A JP 3493619 B2 JP3493619 B2 JP 3493619B2
- Authority
- JP
- Japan
- Prior art keywords
- skeleton
- vehicle
- protective fence
- cushioning
- bottom portion
- 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
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、車両の走行方向に
沿って路面に連続して設置される防護柵に関し、より詳
しくは、車両衝突時の衝撃を吸収する緩衝体が防護柵の
底部に設けられてなる緩衝式防護柵とそれのための躯体
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective fence which is continuously installed on a road surface along a traveling direction of a vehicle, and more specifically, a buffer body which absorbs a shock at the time of a vehicle collision is provided at the bottom of the protective fence. The present invention relates to a buffer type guard fence provided and a frame for it.
【0002】[0002]
【従来の技術】通常、道路の路側や中央分離帯には防護
柵を敷設し、車両が路側を越えて道路外に逸脱したり、
中央分離帯を越えて対向車線に突入することを防止して
いる。従来、上記目的で敷設される剛性防護柵(主に、
コンクリート製)は、端面形状において、下部両側を下
方漸開状の緩やかな傾斜面に形成し、該緩やかな傾斜面
に連設せる上部両側を急傾斜面になすとともに、その長
さを長尺化してなる所謂ニュージャージー型(NJ型)
やフロリダ型(F型)といったものがあり、かかる剛性
防護柵は、地盤面に設けられた基礎コンクリートと一体
化して敷設されている。このような従来の防護柵にあっ
ては、剛性の壁体が地盤面から一体的に起立することと
なるから、該防護柵に車両が衝突した際には衝撃力が衝
突点に集中荷重として作用する。従って、衝撃力が非常
に大きくなり、車両の破損が著しく、又、人命も危ぶま
れるとともに、車両やコンクリートの破片が車道上に飛
散し、他の車両の交通を阻害して二次事故を引き起こす
という問題点を有していた。2. Description of the Related Art Usually, a protective fence is laid on the roadside or the median strip of a road to allow a vehicle to cross the roadside or to leave the road.
It prevents entry into the oncoming lane beyond the median strip. Conventionally, a rigid protective fence laid for the above purpose (mainly,
(Made of concrete), in the end face shape, the lower both sides are formed into a gradually sloping downward sloping slope, and the upper both sides connected to the gently sloping slope are steeply sloping and the length is long. So-called New Jersey type (NJ type)
There is also a type such as Florida type (F type), and such a rigid protective fence is laid integrally with the foundation concrete provided on the ground surface. In such a conventional protective fence, since the rigid wall body stands upright from the ground surface, when the vehicle collides with the protective fence, the impact force acts as a concentrated load at the collision point. To work. Therefore, the impact force becomes extremely large, the damage of the vehicle is significant, the human life is also endangered, and the fragments of the vehicle and concrete are scattered on the roadway, obstructing the traffic of other vehicles and causing a secondary accident. Had the problem.
【0003】そこで、このような不都合を解消するもの
として、特開平10−110413号公報には、底面側
の長手方向(車両走行方向)にわたって半円状の凹部を
設けて、その両側部を脚部となす柵本体と、該柵本体が
設置される路面側には、上面の長手方向にわたって前記
凹部と係合する半円状の凸部が形成された支持部が表さ
れてなる。そして、柵本体の設置にあたっては、前記凹
部と凸部を互いに係合させるとともに、柵本体の両脚部
と支持部間に形成される隙間に緩衝材を長手方向にわた
って設ける緩衝式コンクリート防護柵が提案されてい
る。In order to eliminate such inconvenience, Japanese Unexamined Patent Publication No. 10-110413 discloses that a semicircular recess is provided in the longitudinal direction (vehicle traveling direction) on the bottom surface side, and both side portions are provided with legs. On the road surface where the fence main body is installed, a supporting portion having a semi-circular convex portion that engages with the concave portion is formed on the road surface side where the fence main body is installed. When installing the fence main body, a cushioning concrete protective fence is proposed in which the concave portion and the convex portion are engaged with each other and a cushioning material is provided in the gap formed between both legs of the fence body and the supporting portion over the longitudinal direction. Has been done.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、上記の
防護柵にあっては、柵本体の凹部と支持部の凸部とが面
接触した状態で凹凸係合されているため、車両衝突時の
衝撃力が小さい場合に柵本体の重量及び面接触状態での
摩擦抵抗が大きくなって柵本体が回動しない時があり、
この時には従来の剛性防護柵と同様に衝突による衝撃力
が緩和されない。一方、衝撃力により柵本体が回動して
その脚部が支持部の上面に達した時点(公報図2参照)
から更に衝撃力が作用して柵本体が回動しようとする
と、該回動を阻止できずに柵本体が転倒する危険性があ
る。而して、前記転倒を阻止すべく柵本体の両脚部をア
ンカーボルトにより保持する方法が提案されているが、
両脚部を保持すると、前記凹部と凸部の摩擦抵抗が大き
いことと相まって柵本体の動作が鈍くなり、その結果、
車両衝突時の衝撃力緩和能力に劣るという問題点を有し
ていた。However, in the above-mentioned protective fence, since the concave portion of the fence main body and the convex portion of the supporting portion are in concave and convex engagement with each other in a surface contact state, the impact at the time of a vehicle collision is generated. When the force is small, the fence main body may not rotate due to the weight of the fence main body and the frictional resistance in the surface contact state increasing.
At this time, the impact force due to the collision is not reduced as in the case of the conventional rigid protective fence. On the other hand, when the fence body rotates due to the impact force and its legs reach the upper surface of the support portion (see Fig. 2 of the publication).
If an impact force further acts on the fence main body to rotate it, there is a risk that the rotation cannot be prevented and the fence main body falls. Then, a method of holding both legs of the fence main body with anchor bolts in order to prevent the fall is proposed,
Holding both legs slows down the operation of the fence body in combination with the large frictional resistance between the concave and convex portions, and as a result,
There was a problem that it was inferior in the impact force mitigation ability at the time of a vehicle collision.
【0005】本発明は、上記の如き従来の問題点に鑑み
てなされたもので、緩衝体を具備する剛性の防護柵にお
いて、その底部の形態を適正化することで、車両衝突時
の衝撃力の緩和能力に優れて衝突車両の損傷及びドライ
バーの負傷を軽微に止どめるとともに、衝突車両退避後
の原状復帰能力に富む安全性が高い緩衝式防護柵とそれ
のための躯体を提供することを課題とする。The present invention has been made in view of the above-mentioned conventional problems, and in a rigid protective fence having a cushioning body, by optimizing the shape of the bottom part thereof, the impact force at the time of a vehicle collision is obtained. It provides a highly safe buffering fence and a frame for it, which has excellent mitigation ability to prevent damage to the collision vehicle and driver's injury, and has a high ability to restore the original condition after the collision vehicle retreats. This is an issue.
【0006】[0006]
【課題を解決するための手段】上記課題を解決するため
の手段として、本発明の請求項1記載の緩衝式防護柵1
は、車両走行側に位置する側壁を対車壁面6となす躯体
1aの下部に緩衝体を設け、車両の走行方向に沿って路
面に設置される防護柵において、躯体1aの底部3と基
礎コンクリート11間に設けた支持部30が、底部3と
基礎コンクリート11の一方又は両方に非嵌合状態で当
接してなることを特徴とするするものである。又、本発
明の緩衝式防護柵1は、請求項2記載の如く、前記底部
3が側壁方向の少なくとも一方へ向けて直線状又は屈曲
線又は曲線状の上向面3aとなされ、該上向面3aと連
設せる底部3、又は上向面3aの最突出部を支持部30
となすものである。上記構成からなる緩衝式防護柵1を
基礎コンクリート11上に多数個設置し、且つ車両の走
行方向に沿って連設した道路にあっては、車両が誤って
前記緩衝式防護柵1の対車壁面6に衝突すると、その衝
撃力により躯体1aが車両衝突側と反対側に傾倒し、躯
体1aの下部に設けた弾性体からなる緩衝体が基礎コン
クリート11との間にあって圧縮され、弾性変形を起こ
して縮むことによりその衝撃力が吸収、緩和される。こ
の時、支持部30と底部3及び/又は基礎コンクリー1
1との当接部を支点とした回動可能な構造が、相互の接
触面積及び抵抗を減少させて躯体1aを側壁方向へ傾倒
し易くするので、前記衝撃力の吸収、緩和が更に効率的
に行われて衝突車両の損傷やドライバーの負傷を未然に
防止することができる。又、防護柵全体の自重が支持部
30により支持されるため、常時においては緩衝体への
載荷が少なくなって弾性体からなる緩衝体の疲労、劣化
が防止される。更に、衝撃力が退避した後に、前記圧縮
変形せる緩衝体の弾性反発により躯体1aが車両衝突側
へ押し戻される際にも、躯体1aを回動可能となして相
互の接触抵抗を減ずる支持部30の存在により防護柵を
スムーズに起立せしめて原状に復帰させることができ
る。[Means for Solving the Problems] As a means for solving the above problems, a shock-absorbing protective fence 1 according to claim 1 of the present invention.
Is a protection fence installed on the road surface along the traveling direction of the vehicle, by providing a cushioning member at the lower part of the skeleton 1a whose side wall located on the vehicle running side is the vehicle wall surface 6, and in the protection fence installed on the road surface along the traveling direction of the vehicle. The support part 30 provided between 11 is contact | abutted to the bottom part 3 and one or both of the foundation concrete 11 in a non-fitting state, It is characterized by the above-mentioned. Further, in the cushioning type protective fence 1 of the present invention, as described in claim 2, the bottom portion 3 is formed as a straight or bent line or curved upward surface 3a toward at least one of the side wall directions. The bottom portion 3 that is continuously provided with the surface 3a, or the most protruding portion of the upward surface 3a is the support portion 30.
It is something to say. On a road in which a large number of cushioning type protective fences 1 having the above-mentioned structure are installed on the foundation concrete 11 and which are continuously arranged along the traveling direction of the vehicle, the vehicle is erroneously placed against the vehicle. When colliding with the wall surface 6, the impact force causes the skeleton body 1a to tilt toward the side opposite to the vehicle collision side, and the cushioning body made of an elastic body provided at the lower portion of the skeleton 1a is compressed between the foundation concrete 11 and elastic deformation. The impact force is absorbed and relaxed by raising and contracting. At this time, the support portion 30 and the bottom portion 3 and / or the foundation concrete 1
The pivotable structure having the contact portion with 1 as a fulcrum reduces the mutual contact area and resistance, and makes it easy to tilt the body 1a toward the side wall, so that the impact force can be absorbed and alleviated more efficiently. It is possible to prevent the damage of the collision vehicle and the injury of the driver. Further, since the weight of the entire protective fence is supported by the support portion 30, the load on the buffer body is reduced at all times, and the fatigue and deterioration of the buffer body made of an elastic body are prevented. Further, after the impact force is retracted, even when the frame 1a is pushed back toward the vehicle collision side due to the elastic repulsion of the buffer body that is compressed and deformed, the support part 30 that can rotate the frame 1a and reduce mutual contact resistance. By the presence of, the protective fence can be smoothly raised and restored to its original state.
【0007】本発明の緩衝式防護柵1は、請求項3記載
の如く、請求項1又は2記載の緩衝式防護柵1におい
て、躯体1aの下部に空所12が形成されてなるもので
ある。かかる構成からなる緩衝式防護柵1にあっては、
底部3の下位に空所12を設けることで底部3や支持部
30とその下位や側部に位置する弾性体からなる緩衝体
との接触面積及び抵抗が減じられるから、対車壁面6に
作用する衝撃力に対し側壁方向への傾倒能力に優れて大
なる衝撃力を吸収、緩和し、躯体1aを素早く原状に復
帰させることができる。The buffer type protective fence 1 of the present invention is the buffer type protective fence 1 according to claim 1 or 2, wherein a void 12 is formed in the lower part of the frame 1a. . In the buffer type guard fence 1 having such a configuration,
By providing the space 12 below the bottom portion 3, the contact area and resistance between the bottom portion 3 and the support portion 30 and the cushioning body made of an elastic material located at the lower portion and the side portions thereof are reduced, and therefore, the wall surface 6 against the vehicle is affected. With respect to the impact force, the ability to tilt in the side wall direction is excellent, and a large impact force can be absorbed and alleviated, and the body 1a can be quickly returned to the original state.
【0008】本発明の緩衝式防護柵1は、請求項4記載
の如く、請求項1乃至3の何れかに記載の緩衝式防護柵
1において底部3の少なくとも一部に基礎コンクリート
11と連結する連結部材5が設けられてなることを特徴
とするものである。かかる構成からなる緩衝式防護柵1
を、その連結部材5によって基礎コンクリート11と連
結して設置した際には、連結部材5の弾性及び靱性力に
より緩衝体による衝撃力の吸収、緩和並びに防護柵の原
状復帰作用を助勢し、且つ極度な衝撃力に対しても連結
部材5の強靱な締結力により躯体1aと基礎コンクリー
ト11とが一体化して防護柵の移動や転倒を阻止するこ
とができる。The cushioning type protective fence 1 of the present invention is, as described in claim 4, connected to the concrete foundation 11 on at least a part of the bottom portion 3 of the cushioning type protective fence 1 according to any one of claims 1 to 3. The connecting member 5 is provided. Buffer type protective fence 1 having such a configuration
When installed by being connected to the basic concrete 11 by the connecting member 5, the elasticity and toughness of the connecting member 5 assist absorption and relaxation of impact force by the cushioning member and the restoring action of the protective fence to the original state, and Even with an extreme impact force, the strong fastening force of the connecting member 5 allows the skeleton 1a and the foundation concrete 11 to be integrated with each other to prevent the protective fence from moving or falling.
【0009】本発明の緩衝式防護柵1は、請求項5記載
の如く、請求項1乃至4の何れかに記載の緩衝式防護柵
1における対車壁面6の一方が直面9に形成され、躯体
1aの端面形状が略L字状に形成されてなるものであ
る。かかる構成からなる緩衝式防護柵1によれば、対車
壁面6側を車道となし、且つ他方直面9側を歩道や自転
車道等となすことが可能で、道路の路側における交通の
安全をも確保することができる。According to a fifth aspect of the buffer-type protective fence 1 of the present invention, one of the wall surfaces 6 of the buffer-type protective fence 1 according to any one of claims 1 to 4 is formed as a face 9. The end face of the body 1a is formed in a substantially L shape. According to the cushioning type guard fence 1 having such a configuration, it is possible to form the vehicle wall surface 6 side as a roadway and the other facing surface 9 side as a sidewalk, a bicycle path, etc., and also to secure traffic safety on the roadside. Can be secured.
【0010】本発明の請求項6記載の緩衝式防護柵用の
躯体1aは、該躯体1aの底部3を、躯体1aの両側面
間にわたる幅方向たる側壁方向にわたり凸状で下方へ突
出する屈曲面又は曲線面に形成し、該屈曲面又は曲線面
の最突出部を支持部30となすことを特徴とするもので
ある。かかる構成からなる躯体1aにあっては、前記面
形状により形成される底部3の最突出部が基礎コンクリ
ート11と非嵌合状態で当接する支持部30をなすた
め、対車壁面6に作用する衝撃力に対して躯体1aが側
壁方向へ傾倒し易くなるという利点を有する。According to a sixth aspect of the present invention, there is provided a frame 1a for a buffer type protective fence, wherein a bottom portion 3 of the frame 1a is provided on both side surfaces of the frame 1a.
It is formed on the bent surface or a curved surface projecting downwardly convexly Ri cotton in the width direction serving as the sidewall direction extending between, and is characterized in that formed between the supporting portion 30 of the protruding section of該屈curved or curved surface . In the skeleton 1a having such a configuration, the most projecting portion of the bottom portion 3 formed by the above surface shape forms the support portion 30 that abuts the basic concrete 11 in a non-fitting state, and therefore acts on the vehicle wall surface 6. There is an advantage that the frame 1a is easily tilted in the side wall direction against the impact force.
【0011】[0011]
【発明の実施の形態】以下、本発明の各実施の形態につ
いて図面を参酌しつつ説明する。1は、図1(イ)乃至
(ハ)に示す如く、本発明の実施形態に係る緩衝式防護
柵であり、以下、該緩衝式防護柵1の長さ方向(同図
(イ)、(ロ)における左右方向)を道路方向、又、両
側面間にわたる方向、即ち幅方向(同図(ハ)における
左右方向)を側壁方向という。前記緩衝式防護柵1は、
躯体1aが剛性体(主に、コンクリート製)からなると
ともに、車両の走行方向(道路方向)に沿い、且つ接続
壁7相互を当接して路面の中央分離帯等として設置され
るもので、下位を、その下端部に側壁部2を具備する下
方漸開状の緩やかな傾斜面となし、該緩やかな傾斜面に
連設せる上位を急傾斜面となした対車壁面6が側壁方向
の両面に設けられている。そして、前記躯体1aの下面
は、道路方向中央部の底部3が、側壁方向にわたる、即
ち幅方向にわたって曲線状で凸状の上向面3aに形成さ
れ、その道路方向両側の底部3が両側に直線状の上向面
3aを有する平坦面となされ、該底部3の側壁方向中央
部を除く両側には、前記側壁部2、上向面3a及び平坦
な底部3(一部)に添う略L型の緩衝体としてのクッシ
ョン材4が道路方向にわたり帯状に設けられてなり、且
つ左右両側における道路面Rがクッション材4の立上部
4a上面よりも低い位置に設定され、その端部4b面の
上部が外部に露出してなるとともに、全体が凸状で曲線
状の上向面3aをなす底部3の最突出部は、基礎コンク
リート11面に一部接触する支持部30となる。前記緩
衝体をなすクッション材4の材質としては、例えば、ゴ
ム製品や廃タイヤ、再生タイヤの生産工程等で発生する
廃加硫ゴムを原料とするゴムチップと末端イソシアネー
ト基を有するポリウレタンプレポリマーのバインダーと
を配合して得られる再生ゴム配合物、その他合成樹脂製
品等の弾性変形するものが挙げられる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Each embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 (a) to 1 (c), reference numeral 1 denotes a buffer type protective fence according to an embodiment of the present invention. Hereinafter, the buffer type protective fence 1 will be described in the length direction ((a) in FIG. The left-right direction in (b)) is referred to as the road direction, and the direction across both side surfaces , that is, the width direction (the left-right direction in FIG. 5C) is referred to as the sidewall direction. The buffer type guard fence 1
The frame 1a is made of a rigid body (mainly made of concrete) and is installed along the traveling direction of the vehicle (road direction) and as the median strips of the road surface are brought into contact with the connecting walls 7 to each other. Has a side wall 2 at the lower end thereof and has a gradually sloping downward gradual slope, and the upper surface of the slope that is continuous with the gentle slope is a steep slope. It is provided in. The lower surface of the skeleton 1a, it bottom 3 of the road direction central portion, over the side wall direction, immediately
The upper surface 3a is curved and convex over the width direction, and the bottom portions 3 on both sides in the road direction are flat surfaces having straight upward surfaces 3a on both sides. A cushion material 4 as a substantially L-shaped cushioning member along the side wall portion 2, the upward surface 3a and the flat bottom portion 3 (a part) is provided on both sides except for the strip shape in the road direction, and The road surfaces R on both sides are set at a position lower than the upper surface of the rising portion 4a of the cushioning member 4, the upper end of the end portion 4b thereof is exposed to the outside, and the entire convex surface is a curved upward surface 3a. The most projecting portion of the bottom portion 3 forming the is the support portion 30 that partially contacts the surface of the basic concrete 11. Examples of the material of the cushioning material 4 forming the cushioning body include rubber chips made from waste vulcanized rubber generated in the production process of rubber products, waste tires, recycled tires, etc., and a binder of polyurethane prepolymer having terminal isocyanate groups. Examples thereof include regenerated rubber compounds obtained by blending and, and elastically deformable products such as synthetic resin products.
【0012】次に、上記緩衝式防護柵1の対車壁面6に
車両が左側から衝突し、躯体1aに衝撃力が作用した時
の動作を説明する。前記衝撃力を受けた躯体1aは、右
側に傾倒した状態となり、右側の底部3と基礎コンクリ
ート11間に設けられたクッション材4が圧縮による弾
性変形を起こして縮み、該弾性変形に伴って反発力が発
生する。このように、衝突直後は右側のクッション材4
が圧縮変形して衝撃力を吸収、緩和するとともに、衝撃
力が退避した後には、圧縮変形に伴う反発力によって躯
体1aが左側に押し戻され、左側のクッション材4が圧
縮による弾性変形を起こして縮むという、圧縮及び反発
運動をクッション材4の両側部が繰り返すことによっ
て、躯体1aが衝突前の状態に復帰する。かかる構成か
らなる緩衝式防護柵1にあっては、躯体1a全体の自重
が基礎コンクリート11面と接触する支持部30により
支持されてなるために、常時においてはクッション材4
への載荷重が減少して弾性体からなるクッション材4の
疲労、劣化が予防され、又、車両衝突時には前記支持部
30と基礎コンクリート11の当接部を支点とした回動
可能な構造及び底部3と基礎コンクリート11の間に形
成された空所12によって躯体1aの傾倒に際する抵抗
が減じられることで、躯体1aがより左右方向へ動き易
くなるという作用効果を奏するものである。又、当該緩
衝体をなすクッション材4にあっては、躯体1aの傾倒
により大なる圧縮又は引張力が発生する底部3の両側に
おいて、衝撃力を吸収、緩和して躯体1aを原状復帰さ
せることが可能な上に、底部3の側壁方向中央部の緩衝
体が割愛されるため、使用材料が軽減して安価な構成と
なすことができる。更に、クッション材4の立上部4a
は、剛体からなる躯体1aの側壁部2と道路面Rを構成
する路材r間にあって、双方の接触を回避するととも
に、その弾性力により躯体1aの傾倒及び反発復帰を助
勢するものである。更に、又、図1(イ)、(ロ)に示
す如く、接続壁7相互間にクッション材4を設けると、
衝撃力を受けた躯体1aと隣接せる躯体1aに伝達しよ
うとする衝撃力を吸収して減衰させることができるとと
もに、同図の左部に示すように、接続壁7に凹溝15を
縦設してクッション材4と凹凸嵌合させると、躯体1a
相互間の一体性を増すことができるから、一連の分離帯
としての安全性を更に向上させることができる。Next, a description will be given of the operation when the vehicle collides against the vehicle wall surface 6 of the buffer type protective fence 1 from the left side and the impact force acts on the skeleton 1a. The skeleton 1a that has received the impact force is tilted to the right, the cushion material 4 provided between the bottom 3 on the right side and the concrete foundation 11 is elastically deformed by compression and contracts, and the elastic deformation causes repulsion. Power is generated. Thus, right after the collision, the cushion material 4 on the right side
Compressively deforms to absorb and alleviate the impact force, and after the impact force has retracted, the repulsive force associated with the compression deformation pushes the body 1a back to the left side, causing the left cushion material 4 to elastically deform due to compression. By repeating the compression and repulsive motions of contracting on both sides of the cushion material 4, the body 1a returns to the state before the collision. In the cushioning type protective fence 1 having such a structure, since the weight of the entire skeleton 1a is supported by the supporting portion 30 that is in contact with the surface of the foundation concrete 11, the cushioning member 4 is always provided.
The cushioning member 4 made of an elastic body is prevented from being fatigued and deteriorated due to a reduced load applied to the cushioning member 4. Further, in the event of a vehicle collision, a structure in which the contact portion between the support portion 30 and the foundation concrete 11 is a fulcrum can be rotated. The space 12 formed between the bottom portion 3 and the foundation concrete 11 reduces the resistance of the skeleton 1a when it is tilted, so that the skeleton 1a can move more easily in the left-right direction. Further, in the cushioning material 4 forming the cushioning body, the impact absorbing force is absorbed and relaxed on both sides of the bottom portion 3 where a large compression or tensile force is generated due to the tilting of the body 1a to restore the body 1a to the original state. In addition, since the buffer body in the central portion in the side wall direction of the bottom portion 3 is omitted, the material used can be reduced and the structure can be made inexpensive. Further, the rising portion 4a of the cushion material 4
Is between the side wall portion 2 of the skeleton 1a made of a rigid body and the road material r forming the road surface R to avoid contact between the two and to assist the leaning and rebounding of the skeleton 1a by its elastic force. Furthermore, as shown in FIGS. 1A and 1B, if the cushion material 4 is provided between the connection walls 7,
It is possible to absorb and damp the impact force that is transmitted to the frame 1a adjacent to the frame 1a that has received the impact force, and as shown in the left part of the figure, a groove 15 is vertically provided in the connection wall 7. When the cushion material 4 is fitted in the concave and convex portions, the body 1a
Since the integrity with each other can be increased, the safety as a series of separators can be further improved.
【0013】図2(イ)乃至(ホ)は、緩衝式防護柵1
の他実施形態を示し、当該実施形態にかかる緩衝体とし
てのクッション材4は、その端面形状が道路面R側の端
部4bに立上部4aを有して略L型に形成されるととも
に、側壁方向の両面を対車壁面6となす躯体1a、若し
くは対車壁面6を片側に設け、他方側を直面9として端
面形状が略L字状を呈する躯体1aの各底部3の両側に
設けられ、且つ同図(ニ)を除くものには、底部3と基
礎コンクリート11上面間に空所12を形成してなるも
のである。又、当該緩衝式防護柵1には、その下部に隆
起せる支持部30が設けられてなるもの、及び底部3に
基礎コンクリート11と連結する連結部材5が設けられ
てなるものがあり、より詳しくは、同図(イ)に示すも
のは、クッション材4が直交せる底部3と側壁部2とを
覆うL型で、平坦な底部3の略中央部が断面略円弧状に
膨出せる基礎コンクリート11の支持部30と当接して
なるものである。又、同図(ロ)に示すものは、底部3
の略中央部に、該底部3から一体的に突設し、且つ基礎
コンクリート11の上面と当接する断面略台形状の支持
部30が設けられてなるものである。又、同図(ハ)に
示すものは、基礎コンクリート11上面を断面略円弧状
に膨出させて形成した支持部30から立設せる連結部材
5としてのアンカーボルトが、躯体1aの胴部に貫設し
た通孔8′の下面に設けられた通孔8に挿通されてナッ
トで螺締されることで、平坦な底部3の略中央部と支持
部30の上面とが当接してなるものである。ここで、底
部3の両側に位置するクッション材4の立上部4a上面
は、側壁部2の上端から道路面R側へ下る円弧面に形成
されてなる。又、同図(ニ)に示すものは、躯体1aの
他実施形態を示し、側壁方向における一方の壁面が下方
へ向け少許漸開する直面9に形成され、対車壁面6が他
方片側に形成されて躯体1aが略L字状を呈するととも
に、底部3の略中央部に断面略台形状の支持部30を突
設し、該支持部30を挟持する如く略L型のクッション
材4で底部3と基礎コンクリート11間を充足して支持
部30の下面と基礎コンクリート11の上面とを当接さ
せ、且つ支持部30に植設せる連結部材5が基礎コンク
リート11上面の盲孔内で固着材14によって連結され
てなるもので、かかる緩衝式防護柵1は、道路の路側へ
設置され、直面9側を歩道や自転車道等となして、対車
壁面6側を走行する車両の路外逸脱を防止する。ここ
で、クッション材4は、支持部30の両側において底部
3と基礎コンクリート11間を充足してなるが、かかる
クッション材4の態様は一例で、支持部30の何れか片
側又は両側に空所12を形成することも可能である。
尚、同図(イ)において底部3と当接する支持部30
は、基礎コンクリート11上面から一体的に膨出成形さ
れてなるが、かかる構成に代えて同図の基礎コンクリー
ト11中に破線で示す如く、支持部30は別途埋設して
形成することも可能であり、更に、上記各実施形態に示
す底部3又は基礎コンクリート11から一体的に突設す
る支持部30に代えて、同図(ホ)に示す如く、平坦な
底部3及び基礎コンクリート11上面間に任意形状の筒
状体等からなる支持部30を別途介在させる構成を採用
することもできる。又、各支持部30の道路方向への態
様は、図3(イ)及び(ロ)に示す如く、所望位置に任
意に設けられるもので、その長さや数並びに連結部材5
の設置数等は限定されるものではない(図2(イ)及び
(ハ)に示す支持部30及び連結部材5も同様)。上記
緩衝式防護柵1における連結部材5は、弾性及び靱性力
を有するため、車両衝突時の衝撃力を吸収、緩和、反発
するクッション材4の作用を助勢するとともに、衝撃力
が極度に大きい場合は、連結部材5の上半部が躯体1a
とともに折れ曲がることにより、その衝撃を吸収する。FIGS. 2 (a) to 2 (e) show a buffer type protective fence 1
Another embodiment is shown, and the cushion material 4 as a cushioning body according to the embodiment is formed in a substantially L-shape with an end surface shape having a rising portion 4a at an end portion 4b on the road surface R side, It is provided on both sides of each bottom portion 3 of the frame 1a having both sides in the side wall direction as the vehicle wall surface 6 or having the vehicle wall surface 6 on one side and the other side as the face 9 and the end face shape being substantially L-shaped. In addition, except for FIG. 1D, a void 12 is formed between the bottom portion 3 and the upper surface of the foundation concrete 11. Further, the cushioning type protective fence 1 includes one having a supporting portion 30 which can be raised at the lower portion thereof and one having a connecting member 5 which is connected to the base concrete 11 at the bottom portion 3. (A) is an L type that covers the bottom portion 3 and the side wall portion 2 on which the cushion material 4 intersects at right angles, and the substantially central portion of the flat bottom portion 3 swells in a substantially arcuate cross section. It is in contact with the support portion 30 of. Also, the one shown in FIG.
A support portion 30 having a substantially trapezoidal cross section, which is integrally projected from the bottom portion 3 and is in contact with the upper surface of the basic concrete 11, is provided at a substantially central portion of the. In addition, as shown in FIG. 3C, an anchor bolt as a connecting member 5 which is erected from the support portion 30 formed by bulging the upper surface of the basic concrete 11 in a substantially arcuate cross section is attached to the body portion of the body 1a. By inserting the through hole 8 provided in the lower surface of the through hole 8'through and screwing with a nut, the substantially central portion of the flat bottom portion 3 and the upper surface of the supporting portion 30 are in contact with each other. Is. Here, the upper surfaces of the rising portions 4a of the cushion members 4 located on both sides of the bottom portion 3 are formed into arcuate surfaces that descend from the upper ends of the side wall portions 2 toward the road surface R side. Further, FIG. 9D shows another embodiment of the skeleton 1a, in which one wall surface in the side wall direction is formed in the face 9 which is gradually opened downward, and the vehicle wall surface 6 is formed in the other one side. As a result, the skeleton 1a has a substantially L shape, and a support portion 30 having a substantially trapezoidal cross section is provided at a substantially central portion of the bottom portion 3 and a bottom portion is provided with a substantially L-shaped cushion member 4 so as to sandwich the support portion 30. 3 and the base concrete 11 are filled with each other so that the lower surface of the supporting portion 30 and the upper surface of the basic concrete 11 are brought into contact with each other, and the connecting member 5 that is planted in the supporting portion 30 is a fixing material in a blind hole on the upper surface of the basic concrete 11. The shock-absorbing protective fence 1 is connected to the vehicle by means of 14, and is installed on the road side of the road, and the side facing the car 9 becomes a sidewalk, a bicycle path, etc. Prevent. Here, the cushion material 4 is formed by filling the space between the bottom portion 3 and the basic concrete 11 on both sides of the support portion 30. However, the aspect of the cushion material 4 is an example, and a space is provided on one side or both sides of the support portion 30. It is also possible to form 12.
It should be noted that the supporting portion 30 that abuts the bottom portion 3 in FIG.
Is integrally bulged from the upper surface of the basic concrete 11, but in place of this structure, the support portion 30 can be separately embedded as shown by the broken line in the basic concrete 11 of the figure. In addition, instead of the bottom portion 3 or the support portion 30 integrally projecting from the foundation concrete 11 shown in the above-described embodiments, as shown in FIG. 8E, between the flat bottom portion 3 and the top surface of the foundation concrete 11. It is also possible to adopt a configuration in which the support portion 30 made of a tubular body having an arbitrary shape is separately interposed. In addition, as shown in FIGS. 3 (a) and 3 (b), the shape of each supporting portion 30 in the road direction is arbitrarily provided at a desired position.
The number of installations and the like are not limited (the same applies to the support portion 30 and the connecting member 5 shown in FIGS. 2A and 2C). Since the connecting member 5 in the cushioning type protective fence 1 has elasticity and toughness, it assists the cushioning member 4 to absorb, mitigate, and repel the impact force at the time of a vehicle collision, and when the impact force is extremely large. The upper half of the connecting member 5 is the body 1a
By bending with it, it absorbs the impact.
【0014】尚、又、上記図2(ニ)に示す端面視略L
字状の躯体1aを用いた緩衝式防護柵1の他の設置例に
ついて説明すると、端面視略L型に形成された躯体1a
を2個用い、且つ相互を離隔して並列させるとともに、
その直面9を対向させて基礎コンクリート11に連結す
ることで直面9相互間に形成される空間内に土壌を充填
し、該土壌上位に植樹を施してグリーンベルトを有する
中央分離帯を構築するものである。かかる緩衝式防護柵
1にあっては、対車壁面6上端部の膨出部13によっ
て、車両の排気ガスを車道側に波返し、樹木への直撃を
避けることができるとともに、充填土壌が直接地盤と連
続し、且つ直面9に保水材を設けると、土壌が適度な含
水状態に保たれ、又、断熱材を設けると、日光や排気ガ
スを浴びて高温化した躯体1aからの伝導熱が遮断さ
れ、その乾燥が防止されるために、樹木が枯死すること
なく常に繁茂し、その緑によってドライバーの目の疲れ
を和らげることができる。更に、クッション材4の作用
効果に加えて充填土壌も躯体1aに作用する衝撃力を受
承して吸収、緩和するとともに、躯体1aを車道側へ押
し戻すという作用効果を奏するため、二重の緩衝及び原
状復帰能力を発揮することとなる。尚、保水材の設置に
あっては、直面9側におけるクッション材4の端部と保
水材の下部とを当接させ、且つクッション材4が透水性
を有するべく多孔質材等によって形成されれば、道路面
Rの地表水を立上部4a側で吸水するとともに、その透
水機能をもって直面9側で当接する保水材へ水分を補給
できるという作用を奏する。ここで、クッション材4の
下面を直面9側へ向けて下向面に形成すると、保水材へ
の水流れ勾配が得られてより効率的な給水が行えるもの
である。又、保水材を設けずとも、クッション材4に透
水機能を具備させれば道路面Rの地表水が直接的に充填
土壌16へ供給されることとなる。更に、又、上記端面
視略L型の躯体1aの直面9と他の構造物間とに空間を
形成し、且つ土壌を充填して植樹を施せば、路側にグリ
ーンベルトを構築できる。The end view substantially L shown in FIG.
Another example of the installation of the buffer-type guard fence 1 using the frame-shaped body 1a will be described. The body 1a formed in an end view substantially L-shape.
Two are used, and they are separated from each other and arranged in parallel,
By filling the space in the space formed between the faces 9 by connecting the faces 9 to each other and connecting them to the foundation concrete 11, and by planting trees on the soil, a median strip having a green belt is constructed. Is. In such a shock-absorbing protective fence 1, the swelling portion 13 at the upper end of the wall surface 6 against the vehicle can return the exhaust gas of the vehicle to the side of the roadway to avoid direct hits on the trees and directly fill the filled soil. If a water retention material is provided on the face 9 that is continuous with the ground, the soil will be kept in an appropriate moisture state, and if a heat insulation material is provided, the conduction heat from the body 1a that has become hot due to sunlight or exhaust gas Because it is blocked and its dryness is prevented, the trees are always prosperous without dying, and the greenery can relieve the eyestrain of the driver. Further, in addition to the effect of the cushioning material 4, the filled soil receives the impact force acting on the skeleton 1a, absorbs and alleviates the impact force, and also has the effect of pushing the skeleton 1a back to the roadway side. And the ability to return to the original state will be exhibited. When installing the water retaining material, the end of the cushion material 4 on the face 9 side is brought into contact with the lower portion of the water retaining material, and the cushion material 4 is formed of a porous material or the like so as to have water permeability. For example, the surface water of the road surface R can be absorbed on the side of the rising portion 4a, and its water-permeable function can replenish water to the water-retaining material abutting on the surface 9 side. Here, if the lower surface of the cushion material 4 is formed as a downward surface toward the face 9 side, a water flow gradient to the water retaining material is obtained, and more efficient water supply can be performed. Further, even if the water retaining material is not provided, if the cushion material 4 is provided with the water permeable function, the surface water on the road surface R will be directly supplied to the filled soil 16. Furthermore, if a space is formed between the face 9 of the body 1a having a substantially L-shape in the end view and between other structures, and soil is filled to plant trees, a green belt can be constructed on the roadside.
【0015】図4(イ)乃至(ハ)は、緩衝式防護柵1
の他実施形態を示し、その躯体1aの平坦な底部3は、
略山形を呈して基礎コンクリート11の上面から突設す
る支持部30の頂部と略点接触し、躯体1aが緩衝体と
してのクッション材4を介して回動可能な構造となる
が、かかる支持部30の道路方向への態様は、必要箇所
で必要長さに形成されるものであり、残余の部分、即
ち、底部3と支持部30が当接しない部分にはクッショ
ン材4が位置し、それ自体を端部4b間にわたり連結す
るもので、要は、当該緩衝式防護柵1におけるクッショ
ン材4の平面形状が同図(ハ)に示す如く、その中央部
が断続して略梯子状を呈するものとなる。FIGS. 4 (a) to 4 (c) show a buffer type protective fence 1
2 shows another embodiment, in which the flat bottom portion 3 of the body 1a is
The support 1 has a substantially chevron shape and is in substantially point contact with the top of the support 30 protruding from the upper surface of the foundation concrete 11, and the skeleton 1a is rotatable through the cushioning material 4 as a buffer. The aspect of 30 in the road direction is formed to have a required length at a required location, and the cushion material 4 is located in the remaining portion, that is, the portion where the bottom portion 3 and the support portion 30 do not come into contact with each other. This is for connecting itself between the end portions 4b, and in short, the cushion material 4 in the cushioning type protective fence 1 has a substantially ladder-like shape with its central portion interrupted as shown in FIG. Will be things.
【0016】次に、緩衝体をなすクッション材4に標示
機能を具備させてなる場合について説明すると、前述せ
る緩衝式防護柵1における各クッション材4の立上部4
aの上面及び/又は端部4b面に、必要に応じて着色
材、反射材、蓄光材及び蛍光材からなる群から選ばれた
少なくとも一を設ければ、その材を有する部位が視線誘
導効果を奏して交通の円滑化を図るとともに、道路面R
に設置される躯体1aの下端、即ち、緩衝式防護柵1と
道路面Rとの境目を危険位置としてドライバーに明示
し、特に夜間における衝突を回避することができる。
尚、上記群から選ばれた材は、各クッション材4の外部
に露出する部位の少なくとも一部に設けられていればよ
いもので、その具体的な態様は問わないが、図2(ハ)
に示すクッション材4の立上部4aの上面に設けると、
該立上部4aの上面は、道路面Rより円弧状に***して
なるから、ドライバーの視野によく入って認識性に富
み、又、夜間においてライトが当たり易く標示性に優れ
るものとなる。又、その色調も自由で、且つ各クッショ
ン材4の素材中に元から混入させてもよく、更に、後塗
装、後接着する等、その標示手段は自由である。Next, the case where the cushioning material 4 forming the cushioning body is provided with the marking function will be described. The rising portion 4 of each cushioning material 4 in the cushioning type protective fence 1 described above.
If at least one selected from the group consisting of a coloring material, a reflecting material, a phosphorescent material and a fluorescent material is provided on the upper surface of a and / or the surface of the end portion 4b as necessary, the part having the material will have a gaze guidance effect. Plays a role to facilitate smooth traffic, and the road surface R
The lower end of the skeleton 1a installed in the vehicle, that is, the boundary between the cushioning type protective fence 1 and the road surface R can be clearly indicated to the driver as a dangerous position to avoid a collision at night.
It should be noted that the material selected from the above group may be provided on at least a part of the portion exposed to the outside of each cushion material 4, and its specific mode is not limited.
When provided on the upper surface of the rising portion 4a of the cushion material 4 shown in
Since the upper surface of the rising portion 4a is raised in a circular arc shape from the road surface R, it is well visible in the driver's field of view and rich in recognizability. Further, its color tone is also free, and it may be mixed in the material of each cushion material 4 from the beginning, and further, the marking means such as post-coating or post-bonding is free.
【0017】図5乃至図8は、緩衝体をなすクッション
材4の他の態様を例示し、各図におけるクッション材4
は、その略中央部に空所12が間隔を設けて貫設される
ことで、該略中央部が道路方向に断続してなるものであ
る。即ち、図5乃至図8に示すクッション材4は、平面
視方形の空所12が側壁方向の略中央部に点在すること
で平面形状が略梯子形を呈し、又、図8に示すクッショ
ン材4は、上面の一側に略楔形に膨出して点在する部位
間を空所12となすとともに、その平坦部にも空所12
を断続的に設けてなるものであり、該クッション材4の
長さは、複数個の躯体1aに対応すべく長尺に形成され
てなる。かかるクッション材4を用いて緩衝式防護柵1
を構成すれば、基礎コンクリート11と躯体1aの底部
3間にあって、クッション材4の略中央部が断続するこ
とにより形成される空所12の所望位置に支持部30が
設けられるとともに、該空所12により躯体1aの底部
3との接触面積並びに抵抗が減少して躯体1aが傾倒し
易いという利点があり、且つクッション材4を製作する
上での原材料が軽減するという有益性をも有する。尚、
上記クッション材4においては、その略中央部が方形の
空所12によって断続してなるが、かかる空所12の平
面形状は方形に限定されるものではなく、多角形、円
形、その他の形状等によるものであってもよく、又、そ
の大きさや位置等も任意に設計可能である。5 to 8 exemplify other modes of the cushioning material 4 forming a cushioning body, and the cushioning material 4 in each drawing is shown.
The space 12 is provided at a substantially central portion thereof with a space therebetween so that the substantially central portion is intermittent in the road direction. That is, the cushion material 4 shown in FIGS. 5 to 8 has a substantially ladder-shaped plan when the voids 12 having a rectangular shape in plan view are scattered in the substantially central portion in the side wall direction, and the cushion shown in FIG. The material 4 forms cavities 12 on the one side of the upper surface, which bulges out in a substantially wedge shape and is scattered between the parts, and the cavities 12 also on the flat part.
Is provided intermittently, and the length of the cushion material 4 is formed to be long so as to correspond to the plurality of skeletons 1a. A cushion type guard fence 1 using such cushion material 4
According to the above configuration, the support portion 30 is provided at a desired position of the void 12 which is formed between the basic concrete 11 and the bottom portion 3 of the skeleton 1a, and which is formed by the interruption of the substantially central portion of the cushioning material 4, and the void. 12 has an advantage that the contact area with the bottom portion 3 of the body 1a and the resistance are reduced and the body 1a is easily tilted, and also has an advantage that the raw material for manufacturing the cushion material 4 is reduced. still,
In the cushion material 4, a substantially central portion thereof is intermittently formed by a rectangular void 12, but the planar shape of the void 12 is not limited to a square, but may be polygonal, circular, or any other shape. However, the size, position, etc. can be arbitrarily designed.
【0018】図9(イ)乃至(ハ)、図10(イ)乃至
(ニ)は、緩衝式防護柵1の他実施形態を示し、図9
(イ)に示すものは、躯体1aの底部3の略中央部に基
礎コンクリート11の上面と当接する断面略台形状の支
持部30が一体的に突設され、該支持部30の両側にお
いてバネ材20としての断面略山形を呈する鋼製板バネ
が、その上面を底部3に当接させ、又、脚部を基礎コン
クリート11上面のプレート21に受承させて設けられ
るとともに、基礎コンクリート11に植設された連結部
材5としてのアンカーボルトが前記プレート21、バネ
材20及び対車壁面6の下位に設けた通孔8を貫通し、
通孔8上に設けた凹溝15内でナットにより締結される
ことで緩衝式防護柵1が形成されてなる。ここで、ナッ
トの下位には躯体1aの傾き(凹溝15の水平面が上方
に移行する)を許容すべく遊びを設けるとともに、その
緩みを防止するためダブルナット方式を採用している。
又、道路面Rとの取り合わせは、側壁部2と道路面Rの
末端でマウンドアップされる路材rとの間に間仕切材2
2(弾性変形を起こすものが好ましいが、特に材質は問
わない)が介在されてなり、該取り合わせによって底部
3の下部には夫々空所12が形成されてなるとともに、
空所12内に砂塵等が道路面Rから進入することを防止
してなる。又、同図(ロ)に示すものは、躯体1aの平
坦な底部3と当接すべく基礎コンクリート11上面を断
面略円弧状に***させた支持部30から立設せる連結部
材5としてのアンカーボルトが、躯体1aの胴部に貫設
した通孔8′の下面に設けられた通孔8に挿通されてナ
ットで螺締されるとともに、前記支持部30の両側にバ
ネ材20としてのコイルバネが底部3及び基礎コンクリ
ート11上面と当接するプレート21を有して介在さ
れ、且つ側壁部2を挟み込む如く形成される基礎コンク
リート11間とに間仕切材22を設けることで緩衝式防
護柵1が構成されてなる。又、同図(ハ)に示すもの
は、躯体1aの平坦な底部3に植設された連結部材5と
しての鋼棒又は鋼板が、基礎コンクリート11に別途埋
設されて基礎コンクリート11面から断面略台形状に突
出する支持部30の上面より穿設した盲孔内で固着材1
4によって連結されて底部3と支持部30の上面が当接
するとともに、バネ材20をなすクッション材4(前出
の合成樹脂等からなる弾性体)とプレート21(鋼板
等)の積層体が、基礎コンクリート11の上面両端部に
夫々係止されて位置し、且つ底部3を受承することで緩
衝式防護柵1が形成されてなる。FIGS. 9 (a) to 9 (c) and 10 (a) to 10 (d) show another embodiment of the buffer type protective fence 1.
In the structure shown in (a), a support portion 30 having a substantially trapezoidal cross section that abuts the upper surface of the foundation concrete 11 is integrally projectingly provided substantially at the center of the bottom portion 3 of the skeleton 1a, and springs are provided on both sides of the support portion 30. A steel leaf spring having a substantially chevron cross-section as the material 20 is provided so that the upper surface thereof abuts the bottom portion 3 and the legs are received by the plate 21 on the upper surface of the basic concrete 11, and An anchor bolt as the implanted connecting member 5 penetrates through the plate 21, the spring member 20 and the through hole 8 provided below the vehicle wall surface 6,
The buffer type protective fence 1 is formed by fastening with a nut in the concave groove 15 provided on the through hole 8. Here, a play is provided below the nut to allow the inclination of the body 1a (the horizontal plane of the concave groove 15 moves upward), and a double nut system is adopted to prevent the looseness.
In addition, the alignment with the road surface R is performed by the partition material 2 between the side wall portion 2 and the road material r that is mounted at the end of the road surface R.
2 (preferably elastically deformable, but the material is not particularly limited) is interposed, and a void 12 is formed in the lower portion of the bottom portion 3 by the combination, and
This prevents dust and the like from entering the void 12 from the road surface R. Also, the one shown in FIG. 2B is an anchor as a connecting member 5 which can be erected from a supporting portion 30 in which the upper surface of the basic concrete 11 is raised so as to come into contact with the flat bottom portion 3 of the skeleton 1a in a substantially arcuate cross section. The bolt is inserted into a through hole 8 provided in the lower surface of a through hole 8 ′ penetrating the body of the skeleton 1a and screwed with a nut, and a coil spring as a spring member 20 is provided on both sides of the supporting portion 30. The buffer type protective fence 1 is configured by providing a partition member 22 between the base concrete 11 formed by sandwiching the side wall portion 2 with the bottom portion 3 and the plate 21 abutting the top surface of the base concrete 11 and sandwiching the side wall portion 2. It will be done. In addition, as shown in FIG. 3C, a steel rod or a steel plate as a connecting member 5 that is planted in the flat bottom portion 3 of the skeleton 1a is separately embedded in the basic concrete 11 and the cross section from the basic concrete 11 surface is omitted. The fixing material 1 is provided in a blind hole formed from the upper surface of the support portion 30 protruding in a trapezoidal shape.
4, the bottom portion 3 and the upper surface of the support portion 30 come into contact with each other, and a laminated body of the cushion material 4 (elastic body made of synthetic resin or the like) and the plate 21 (steel plate or the like) forming the spring material 20 is formed. The shock-absorbing protective fence 1 is formed by being positioned at both ends of the upper surface of the foundation concrete 11 and respectively receiving the bottom portion 3.
【0019】更に、図10(イ)及び(ロ)に示すもの
は、躯体1aの底部3の略中央部に基礎コンクリート1
1と当接する断面略台形状の支持部30を突設し、該支
持部30に植設せる連結部材5としての鋼棒又は鋼板
が、基礎コンクリート11上面の盲孔内で固着材14に
よって連結されるとともに、バネ材20をなす弧状板バ
ネが道路方向にわたり、且つその中央部が対車壁面6の
下位に設けた通孔8に挿通され、該通孔8上に設けた凹
溝15内でナットにより締結するボルトをもって底部3
に固定され、しかもかかるバネ材20の両先端を基礎コ
ンクリート11上面に設けた凹溝15(鋼板等により補
強されてなる)内に位置させて受承することで緩衝式防
護柵1が構成されてなる。又、同図(ハ)及び(ニ)に
示すように、平坦な底部3と基礎コンクリート11上面
間に断面円形をなす他の支持部30を別途串刺し状に設
け、バネ材20をなす弧状板バネの中央部が、基礎コン
クリート11から立設するアンカーボルトにナットをも
って螺締され、又、該バネ材20の両先端が収納される
凹溝15を躯体1aの底部3に嵌着することで、上記
(イ)及び(ロ)に示すものと上下反転状の緩衝体を具
備してなる緩衝式防護柵1を形成することも可能である
とともに、バネ材20としての弧状板バネの使用枚数も
所望する弾性変形量に応じて任意に設定することができ
る。Further, as shown in FIGS. 10 (a) and 10 (b), the foundation concrete 1 is provided in the substantially central portion of the bottom portion 3 of the skeleton 1a.
1. A support portion 30 having a substantially trapezoidal cross section that abuts 1 is projected, and a steel rod or a steel plate as a connecting member 5 that is planted in the support portion 30 is connected by a fixing material 14 in a blind hole on the upper surface of the foundation concrete 11. At the same time, the arc-shaped leaf spring that forms the spring member 20 extends in the road direction, and the center portion thereof is inserted into the through hole 8 provided in the lower portion of the vehicle wall surface 6, and inside the concave groove 15 provided on the through hole 8. With the bolt that is fastened with the nut at the bottom 3
The shock-absorbing protective fence 1 is constructed by fixing both ends of the spring member 20 and receiving the spring member 20 in the concave groove 15 (reinforced by a steel plate or the like) provided on the upper surface of the foundation concrete 11. It becomes. Further, as shown in (c) and (d) of FIG. 5, another supporting portion 30 having a circular cross section is separately provided between the flat bottom portion 3 and the upper surface of the foundation concrete 11 in a skewered shape to form the spring member 20. The central portion of the spring is screwed with an anchor bolt standing upright from the foundation concrete 11 with a nut, and the recessed groove 15 for accommodating both ends of the spring member 20 is fitted to the bottom portion 3 of the body 1a. It is also possible to form a shock-absorbing protective fence 1 including a shock absorber that is vertically inverted from that shown in (a) and (b) above, and the number of arc-shaped leaf springs used as the spring member 20. Also, it can be arbitrarily set according to a desired elastic deformation amount.
【0020】尚、上記図9及び図10に示す各緩衝式防
護柵1にあっては、底部3又は基礎コンクリート11面
が支持部30と当接して緩衝体をなすバネ材20(弾性
体)の疲労、劣化を予防し、且つかかる当接部で躯体1
aが回動可能な構造となって側壁方向へ傾倒し易くなる
という作用効果を奏するものである。In each of the buffer type protective fences 1 shown in FIG. 9 and FIG. 10, the spring member 20 (elastic body) which forms a buffer body by the bottom portion 3 or the surface of the concrete foundation 11 contacting the support portion 30. Body fatigue and deterioration are prevented, and at the abutting part, the frame 1
This has the effect that the structure a can be rotated and can be easily tilted in the side wall direction.
【0021】而して、上記各実施形態における躯体1a
の基本的な断面形状は一例であり、具体的な形状はこれ
に限定されるものではなく、本発明の意図する範囲内で
設計変更可能である。又、連結部材5の材料としては、
機械的性質たる弾性及び靱性力において優位性を示す鋼
棒を使用することが望ましいが、連結部材5にはボル
ト、鋼板、ワイヤ、ロープ等を使用することも可能であ
る。更に、上記連結部材5の具体的な連結方法、並びに
該連結部材5の数や位置等、又、躯体1a、クッション
材4及び基礎コンクリート11を固着する手段も限定せ
ず、躯体1a相互間を連結する方法も自由に設定可能で
ある。Thus, the frame 1a in each of the above embodiments
The basic cross-sectional shape of 1 is an example, and the specific shape is not limited to this, and the design can be changed within the scope intended by the present invention. Further, as the material of the connecting member 5,
It is desirable to use a steel rod that is superior in terms of mechanical properties such as elasticity and toughness, but it is also possible to use a bolt, a steel plate, a wire, a rope or the like for the connecting member 5. Further, the specific connecting method of the connecting members 5, the number and positions of the connecting members 5, the means for fixing the skeleton 1a, the cushion material 4 and the basic concrete 11 are not limited, and the skeletons 1a are mutually connected. The connection method can also be set freely.
【0022】又、上記各実施形態における緩衝体として
のクッション材4の端面形状、道路方向への長さ及び緩
衝体をなすバネ材20の道路方向への設置数は、躯体1
aの長さによって制約されるものではなく、本発明の意
図する範囲内で任意に設定可能である。しかも、上記各
実施形態においては、クッション材4及びバネ材20を
例示して緩衝体となしているが、かかる緩衝体の具体的
な形状や材質はこれらに限定されるものではなく、本発
明でいう緩衝体とは、弾性体からなるとともに、本発明
の意図する作用効果を生じせしめるものからなればよい
のである。In addition, the end surface shape of the cushioning material 4 as a cushioning body, the length in the road direction, and the number of spring materials 20 forming the cushioning body in the road direction in each of the above-described embodiments are the same as those of the skeleton 1.
It is not limited by the length of a and can be set arbitrarily within the scope intended by the present invention. Moreover, in each of the above-described embodiments, the cushioning member 4 and the spring member 20 are illustrated as a buffer body, but the specific shape and material of the buffering body are not limited to these, and the present invention is not limited thereto. The cushioning body referred to in the above may be made of an elastic body and a material that produces the intended effect of the present invention.
【0023】又、上記各実施形態において、基礎コンク
リート11の態様が、その上面を屈曲面に形成してなる
もの、断面形状が略凹型のもの、支持部30や付属品
(連結部材5、プレート21、間仕切材22、アンカー
ボルト、鋼材等)を有してなるもの、或いはこれらが混
在してなるもの等、複雑化してその現場施工が煩雑にな
る恐れのあるものは、これに代えて予め上記要件を具備
させて製品化した基礎用ブロック11′(図4(ニ)に
その一例を示す)を使用することもでき、この場合は、
基礎用ブロック11′上位の緩衝式防護柵1を含めて迅
速施工性を確保することができるものである。Further, in each of the above-mentioned embodiments, the basic concrete 11 has an upper surface formed into a curved surface, a cross-sectional shape of which is substantially concave, a supporting portion 30 and accessories (connecting member 5, plate). 21, partitioning material 22, anchor bolts, steel materials, etc., or a mixture of these materials, which may become complicated and complicate the on-site construction, instead of this, It is also possible to use a basic block 11 '(one example of which is shown in FIG. 4D) which has been manufactured by satisfying the above requirements. In this case,
Including the shock-absorbing guard fence 1 above the foundation block 11 ', quick workability can be ensured.
【0024】[0024]
【発明の効果】本発明に係る緩衝式防護柵は、車両走行
側に位置する側壁を対車壁面となす躯体の下部に緩衝体
を設け、車両の走行方向に沿って路面に設置される防護
柵において、躯体の底部と基礎コンクリート間に設けた
支持部が、底部と基礎コンクリートの一方又は両方に非
嵌合状態で当接し、或いは、前記底部が側壁方向の少な
くとも一方へ向けて直線状又は屈曲線又は曲線状の上向
面となされ、該上向面と連設せる底部又は上向面の最突
出部を支持部となすために、車両が誤って当該緩衝式防
護柵の対車壁面に衝突しても、その衝撃力により躯体が
車両衝突側と反対側に傾倒し、躯体の底部に設けた弾性
体からなる緩衝体が基礎コンクリートとの間において圧
縮され、弾性変形を起こして縮むことにより、その衝撃
力を吸収して緩和する。この時、支持部と底部及び/又
は基礎コンクリートの当接部を支点とした回動可能な構
造が、相互の接触面積及び抵抗を減少させて躯体を側壁
方向へ傾倒し易くするので、前記衝撃力の吸収、緩和が
更に効率的に行われて衝突車両の損傷やドライバーの負
傷を未然に防止するとともに、衝撃力が退避した後に、
前記圧縮変形せる緩衝体の弾性反発により躯体が車両衝
突側へ押し戻される際にも、躯体を回動可能となして相
互の接触抵抗を減ずる支持部の存在により、躯体をスム
ーズに起立せしめて原状に復帰させることができる。
又、防護柵全体の自重が支持部により支持されてなるた
め、常時において緩衝体への載荷が少なくなって弾性体
からなる緩衝体の疲労、劣化が未然に防止される。The shock-absorbing guard fence according to the present invention is provided with a shock-absorbing member at the lower part of the body whose side wall located on the vehicle traveling side serves as the vehicle wall surface, and is installed on the road surface along the traveling direction of the vehicle. In the fence, the support portion provided between the bottom of the skeleton and the foundation concrete abuts on one or both of the bottom and the foundation concrete in a non-fitting state, or the bottom is linear toward at least one of the side wall directions or Since the vehicle is erroneously formed as a curved or curved upward surface and the most protruding portion of the bottom portion or the upward surface connected to the upward surface serves as a support portion, the vehicle is erroneously opposed to the vehicle wall surface of the buffer fence. Even if the vehicle collides with the vehicle, the impact force causes the body to tilt to the side opposite to the vehicle collision side, and the cushioning body made of an elastic body provided at the bottom of the body is compressed between the foundation concrete and elastically deforms to shrink. By absorbing the impact force That. At this time, since the rotatable structure having the contact portion between the support portion and the bottom portion and / or the base concrete as a fulcrum reduces mutual contact area and resistance to facilitate tilting the body toward the side wall, The force is absorbed and relieved more efficiently to prevent damage to the colliding vehicle and driver injury, and after the impact force escapes,
Even when the skeleton body is pushed back toward the vehicle collision side due to the elastic repulsion of the cushioning body that is compressed and deformed, the skeleton body can be erected smoothly due to the existence of the support portion that can rotate the skeleton body and reduce mutual contact resistance. Can be returned to.
Further, since the weight of the entire protective fence is supported by the supporting portion, the load on the cushioning body is reduced at all times, and fatigue and deterioration of the cushioning body made of an elastic body can be prevented.
【0025】又、本発明に係る緩衝式防護柵は、その底
部に緩衝体を有して防護柵を構成する躯体の下部に空所
が形成されてなるために、該空所の存在により底部や支
持部とその下位や側部に位置する弾性体からなる緩衝体
との接触面積及び抵抗が減じられ、衝撃力に対する側壁
方向への傾倒能力に優れて大なる衝撃力を吸収、緩和す
るとともに、躯体を素早く原状に復帰させる。Further, since the buffer-type guard fence according to the present invention has a buffer at the bottom thereof and a vacant space is formed in the lower part of the skeleton forming the guard fence, the existence of the vacant space causes the bottom part to be formed. The contact area and resistance between the support part and the cushioning part made of an elastic material located at the lower and side parts of the support part and the support part are reduced, and the ability to tilt in the side wall direction against the impact force is excellent and the large impact force is absorbed and alleviated. , Quickly restore the body to its original state.
【0026】又、本発明に係る緩衝式防護柵は、底部の
少なくとも一部に基礎コンクリートと連結する連結部材
が設けられてなるために、連結部材の弾性及び靱性力に
より前記緩衝体による衝撃力の吸収、緩和並びに躯体の
原状復帰作用を助勢するとともに、極度な衝撃力に対し
ても連結部材の強靱な締結力をもって躯体の移動や転倒
を阻止する。In addition, since the shock-absorbing guard fence according to the present invention is provided with a connecting member for connecting to the basic concrete on at least a part of the bottom, the impact force of the shock absorbing member due to the elasticity and toughness of the connecting member. It assists the absorption, relaxation, and the action of restoring the original state of the skeleton, and also prevents the movement and fall of the skeleton with the strong fastening force of the connecting member against extreme impact force.
【0027】又、本発明に係る緩衝式防護柵は、対車壁
面の一方が直面に形成されて躯体の端面形状が略L字状
に形成されてなるために、対車壁面側を車道となすとと
もに、他方直面側を歩道や自転車道等となすことで道路
の路側における交通の安全をも確保することが可能とな
る。Further, in the shock-absorbing guard fence according to the present invention, one of the wall surfaces facing the vehicle is formed to face, and the end surface of the skeleton is formed in a substantially L shape, so that the wall surface facing the vehicle serves as a roadway. In addition, by forming the other side of the road as a sidewalk or a bicycle path, it is possible to secure traffic safety on the roadside.
【0028】本発明に係る緩衝式防護柵用の躯体は、そ
の底部を、躯体の両側面間にわたる幅方向たる側壁方向
にわたり凸状で下方へ突出する屈曲面又は曲線面に形成
し、該屈曲面又は曲線面の最突出部を支持部となすため
に、該面形状により形成される底部の最突出部が基礎コ
ンクリートと非嵌合状態で当接する支持部となって衝撃
力を受けた躯体が側壁方向へ傾倒し易くなる。The skeleton of the buffer type safety barriers according to the present invention, the bent surface or a curved surface projecting its bottom downward in the width direction serving as the sidewall direction <br/> Niwata Ri convex over between both sides of the skeleton In order to form the most projecting portion of the curved surface or curved surface as the supporting portion, the most projecting portion of the bottom formed by the surface shape becomes the supporting portion that abuts the basic concrete in a non-fitting state. The skeleton body that receives an impact force easily tilts toward the side wall.
【図1】本発明の一実施形態に係る緩衝式防護柵であっ
て、(イ)は敷設状態を示す一部正面図、(ロ)は同平
面図、(ハ)は(ロ)におけるA−A断面図。FIG. 1 is a buffer guard fence according to an embodiment of the present invention, in which (a) is a partial front view showing a laid state, (b) is the same plan view, and (c) is an A in (b). -A sectional view.
【図2】(イ)乃至(ホ)は本発明に係る緩衝式防護柵
の他実施形態を示し、(イ)及び(ニ)は敷設断面図、
(ロ)、(ハ)及び(ホ)は一部敷設断面図。2 (a) to (e) show another embodiment of the cushioning type protective fence according to the present invention, and (a) and (d) are laying sectional views,
(B), (C) and (E) are partially laid cross-sectional views.
【図3】(イ)は図2(ロ)又は同(ニ)におけるO−
O断面を例示する一部断面図、(ロ)は同(ホ)におけ
るP−P断面を例示する一部断面図。3 (a) is an O- in FIG. 2 (b) or FIG. 2 (d).
The partial sectional view which illustrates O cross section, (B) The partial sectional view which illustrates the PP cross section in the same (E).
【図4】本発明に係る緩衝式防護柵の他実施形態を示
し、(イ)は敷設断面図、(ロ)は(イ)におけるQ−
Q断面図、(ハ)は(ロ)におけるR−R断面図、
(ニ)は基礎用ブロックの一例で、その敷設断面図。FIG. 4 shows another embodiment of the cushioning type protective fence according to the present invention, in which (a) is a laying sectional view and (b) is Q- in (a).
Q sectional view, (C) is an RR sectional view in (B),
(D) is an example of a foundation block, and its laying sectional view.
【図5】クッション材の他の態様を示し、(イ)は正面
図、(ロ)は平面図、(ハ)は(ロ)におけるI−I断
面図。5A and 5B show another aspect of the cushioning material, in which (A) is a front view, (B) is a plan view, and (C) is a sectional view taken along line I-I in (B).
【図6】クッション材の他の態様を示し、(イ)は正面
図、(ロ)は平面図、(ハ)は(ロ)におけるJ−J断
面図。FIG. 6 shows another aspect of the cushioning material, (A) is a front view, (B) is a plan view, and (C) is a JJ cross-sectional view in (B).
【図7】クッション材の他の態様を示し、(イ)は正面
図、(ロ)は平面図、(ハ)は(ロ)におけるK−K断
面図。7A and 7B show another aspect of the cushioning material, in which (A) is a front view, (B) is a plan view, and (C) is a KK cross-sectional view in (B).
【図8】クッション材の他の態様を示し、(イ)は正面
図、(ロ)は一部平面図、(ハ)は(ロ)におけるL−
L断面図、(ニ)は同M−M断面図。FIG. 8 shows another aspect of the cushioning material, (a) is a front view, (b) is a partial plan view, and (c) is an L- in (b).
L sectional view, (d) is the same MM sectional view.
【図9】(イ)乃至(ハ)は本発明に係る緩衝式防護柵
の他実施形態を示す一部敷設断面図。9 (a) to 9 (c) are partially laid cross-sectional views showing another embodiment of the shock-absorbing protective fence according to the present invention.
【図10】本発明に係る緩衝式防護柵の他実施形態を示
し、(イ)は一部敷設断面図、(ロ)は(イ)における
S−S断面図、(ハ)は一部敷設断面図、(ニ)は
(ハ)におけるT−T断面図。FIG. 10 shows another embodiment of the cushioning type protective fence according to the present invention, in which (a) is a partially laid sectional view, (b) is an S-S sectional view in (a), and (c) is partially laid. A sectional view, (d) is a TT sectional view in (c).
1…緩衝式防護柵、1a…躯体、2…側壁部、3…底
部、3a…上向面、4…クッション材、4a…立上部、
4b…端部、5…連結部材、6…対車壁面、7…接続
壁、8,8′…通孔、9…直面、11…基礎コンクリー
ト、11′…基礎用ブロック、12…空所、13…膨出
部、15…凹溝、20…バネ材、21…プレート、22
…間仕切材、30…支持部、R…道路面、r…路材DESCRIPTION OF SYMBOLS 1 ... Buffer type guard fence, 1a ... Frame, 2 ... Side wall part, 3 ... Bottom part, 3a ... Upward surface, 4 ... Cushion material, 4a ... Upright part,
4b ... End, 5 ... Coupling member, 6 ... Vehicle wall surface, 7 ... Connecting wall, 8,8 '... Through hole, 9 ... Face, 11 ... Foundation concrete, 11' ... Foundation block, 12 ... Vacancy, 13 ... Bulging part, 15 ... Groove, 20 ... Spring material, 21 ... Plate, 22
... Partition material, 30 ... Supporting part, R ... Road surface, r ... Road material
Claims (6)
(6)となす躯体(1a)の下部に緩衝体を設け、車両
の走行方向に沿って路面に設置される防護柵において、
躯体(1a)の底部(3)と基礎コンクリート(11)
間に設けた支持部(30)が、底部(3)と基礎コンク
リート(11)の一方又は両方に非嵌合状態で当接して
なることを特徴とする緩衝式防護柵。1. A protective fence installed on a road surface along a traveling direction of a vehicle, wherein a cushioning body is provided at a lower portion of a skeleton (1a) having a side wall located on a vehicle traveling side as a vehicle wall surface (6).
The bottom part (3) of the frame (1a) and the foundation concrete (11)
A shock-absorbing guard fence, characterized in that a supporting portion (30) provided therebetween is in contact with one or both of the bottom portion (3) and the foundation concrete (11) in a non-fitting state.
一方へ向けて直線状又は屈曲線又は曲線状の上向面(3
a)となされ、該上向面(3a)と連設せる底部
(3)、又は上向面(3a)の最突出部を支持部(3
0)となす請求項1記載の緩衝式防護柵。2. The upward surface (3) in which the bottom portion (3) is linear or bent or curved toward at least one of the side walls.
a), and the bottom portion (3) continuous with the upward surface (3a) or the most protruding portion of the upward surface (3a) is the support portion (3).
0) The buffer type guard fence according to claim 1.
が形成されてなる請求項1又は2記載の緩衝式防護柵。3. A vacant space (12) at a lower part of the skeleton (1a).
The shock-absorbing protective fence according to claim 1 or 2, which is formed.
コンクリート(11)と連結する連結部材(5)が設け
られてなる請求項1乃至3の何れかに記載の緩衝式防護
柵。4. The shock-absorbing protective fence according to claim 1, wherein at least a part of the bottom portion (3) is provided with a connecting member (5) for connecting to the concrete foundation (11).
に形成され、躯体(1a)の端面形状が略L字状に形成
されてなる請求項1乃至4の何れかに記載の緩衝式防護
柵。5. A face (9) facing one of the wall surfaces (6) of the vehicle.
The buffer type protective fence according to any one of claims 1 to 4, wherein the end face of the skeleton (1a) is formed in a substantially L shape.
a)の両側面間にわたる幅方向たる側壁方向にわたり凸
状で下方へ突出する屈曲面又は曲線面に形成し、該屈曲
面又は曲線面の最突出部を支持部(30)となすことを
特徴とする緩衝式防護柵用の躯体。6. The bottom (3) of the skeleton ( 1a) is attached to the skeleton (1
Ritotsu cotton in the width direction serving as the sidewall direction across between both sides of a)
A structure for a cushioning type protective fence, characterized in that it is formed in a curved surface or a curved surface that protrudes downward in the shape of a circle, and the most protruding portion of the curved surface or the curved surface serves as the support portion (30).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21767499A JP3493619B2 (en) | 1999-06-26 | 1999-06-26 | Buffer type guard fence and skeleton for it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21767499A JP3493619B2 (en) | 1999-06-26 | 1999-06-26 | Buffer type guard fence and skeleton for it |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001011828A JP2001011828A (en) | 2001-01-16 |
JP3493619B2 true JP3493619B2 (en) | 2004-02-03 |
Family
ID=16707958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21767499A Expired - Fee Related JP3493619B2 (en) | 1999-06-26 | 1999-06-26 | Buffer type guard fence and skeleton for it |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3493619B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104846760A (en) * | 2015-03-26 | 2015-08-19 | 刘瑞 | Buffering pipe for road guardrail |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100806641B1 (en) * | 2006-05-22 | 2008-03-03 | (주)대우건설 | Precast Concrete Median Strip and Median Strip System |
JP4999740B2 (en) * | 2008-03-17 | 2012-08-15 | 有限会社吉田構造デザイン | Road partition wall |
CN108589523B (en) * | 2018-07-13 | 2024-05-14 | 山东省交通规划设计院集团有限公司 | Shock-absorbing guardrail base for bridge and working method |
CN110359366A (en) * | 2019-07-02 | 2019-10-22 | 中国公路工程咨询集团有限公司 | It is a kind of using the bridge drainage structure of pervious concrete and the calculation method of pervious concrete permeability rate |
CN114481912B (en) * | 2022-01-21 | 2023-06-27 | 冠县永联复合材料有限公司 | Traffic rail guard based on intellectual detection system |
-
1999
- 1999-06-26 JP JP21767499A patent/JP3493619B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104846760A (en) * | 2015-03-26 | 2015-08-19 | 刘瑞 | Buffering pipe for road guardrail |
Also Published As
Publication number | Publication date |
---|---|
JP2001011828A (en) | 2001-01-16 |
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