JP2002275844A - Shock absorbing guard fence and its skeleton - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guard fence capable of minimizing damage of a collision vehicle and an injury of a driver, and excellent in original state restoring capac ity in a rigid guard fence having a shock absorber. SOLUTION: The guard fence is composed of an upper skeleton 2 and a lower skeleton 3, and forms side walls of both skeletons as counter vehicle wall surfaces 17. The upper skeleton 2 composed of an elastic body is fixed or fastened in a belt shape in the vehicle traveling direction on the lower skeleton 3 as a cushion material 4" being the shock absorber. The skeletons of the guard fence are composed of the upper skeleton 2, the lower skeleton 3, and the shock absorber interposed between interfaces 2a and 3a of the upper and lower skeletons 2 and 3 or a shock absorber interposed between a bottom surface 20 of the lower skeleton 3 and base concrete 11 in addition to the shock absorber, and is installed on a road surface in the vehicle traveling direction with the side walls of the upper and lower skeletons 2 and 3 positioned on the vehicle traveling side as the counter vehicle wall surfaces 17. At least one surface of the interfaces 2a and 3a or the bottom surface 20 is formed as a projecting bending surface or a curved surface or an inclined face bending toward a side part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective fence continuously installed on a road surface along a traveling direction of a vehicle, and more particularly, a protective fence which is divided into upper and lower parts to absorb an impact force at the time of a vehicle collision. The present invention relates to shock-absorbing protective fences and their frames that are relaxed.

[0002]

2. Description of the Related Art Generally, a protective fence is laid on the road side or a median strip of a road so that a vehicle may cross the road side and deviate from the road.
This prevents the vehicle from entering the oncoming lane beyond the median strip. Conventionally, rigid protective fences laid for the above purpose (mainly,
Concrete)), in the end face shape, the lower both sides are formed as gentle slopes of gradually lowering downward, and both upper sides connected to the gentle slope are steeply sloped, and the length is long. So-called New Jersey type (NJ type)
And Florida type (F type). Such a rigid protective fence is laid integrally with the foundation concrete provided on the ground surface. In such a conventional protection fence, since a rigid wall body stands up integrally from the ground surface, when a vehicle collides with the protection fence, an impact force is applied as a concentrated load to a collision point. Works. Therefore, the impact force becomes extremely large, the vehicle is significantly damaged, and human lives are jeopardized, and debris of the vehicle and concrete scatter on the roadway, hindering the traffic of other vehicles and causing a secondary accident. There was a problem that.

In order to solve such inconveniences, Japanese Utility Model Publication No. 5-10013 discloses a concrete wall railing on a lower concrete wall installed on the ground surface and a top portion of the lower concrete wall. A cushioning material having a uniform thickness is provided between the upper and lower concrete walls, and a cushion material having a uniform thickness is provided between the two walls, and the lower and upper concrete walls are connected to the center of the facing surface. A device provided with a metal member has been proposed.

[0004]

However, in the above-described concrete wall balustrade, a cushion material having a uniform thickness is provided between the lower concrete wall and the upper concrete wall over the entire opposing surface. However, the portion where the cushion material effectively receives the upper concrete wall which is tilted by the impact at the time of the vehicle collision is located only near the widthwise end of the concrete wall, and its excess width direction The cushion material located near the center does not work effectively. Further, from the structure in which the two walls are connected at the center in the width direction, when the upper concrete wall is tilted, despite the separation distance between the opposing surfaces increasing toward the end, the uniform thickness as described above. With the formed cushioning material, the degree of deformation at the end is insufficient, so that the impact force due to vehicle collision cannot be absorbed and the upper concrete wall is too tilted and abuts against the lower concrete wall, which may result in falling over was there.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and is directed to a rigid protective fence provided with a buffer. By optimizing the vehicle, it is excellent in the ability to alleviate the impact force at the time of vehicle collision, minimizing damage to the collision vehicle and injury to the driver, and high in safety with full ability to return to the original state after evacuating the collision vehicle An object of the present invention is to provide a buffer type protective fence and its frame.

[0006]

As a means for solving the above-mentioned problems, a shock-absorbing protective fence 1 according to claim 1 of the present invention.
Is composed of an upper frame 2 and a lower frame 3 and is located on the vehicle running side, and a protective fence installed on a road surface with the side walls of the lower frames 2 and 3 serving as anti-vehicle wall surfaces 17 is formed of an elastic body. It is characterized in that the frame 2 is fixed or fastened to the lower frame 3 in the form of a band in the vehicle running direction on the lower frame 3 as a cushion material 4 "forming a buffer. Since the upper frame 2 itself fixed or fastened on the lower frame 3 itself forms a cushioning material 4 ″ as a shock absorber and has elasticity as a whole, the impact force at the time of a vehicle collision is reduced by the pair of upper frames 2. When acting on the vehicle wall surface 17, the upper frame 2 is elastically deformed from the root with the lower frame 3, causing the upper frame 2 to bend in an arc shape, thereby effectively absorbing and mitigating the impact force, and at the time of the curved deformation. Vehicle collision from the center in the side wall direction Since the cross section on the side is elongated and the half section on the opposite side is compressed, after the impact force retreats, the tensile force that tries to pull back the elongation deformation and the repulsion force that tries to push back the compression deformation Respectively, so that the entire cushion member 4 ″ has a spring-like action of swinging in the side wall direction, and the upper frame 2 can be quickly returned to the original state.
The upper skeleton 2 is made of an elastic body as a whole to form a buffer, and has a band shape in the vehicle traveling direction.
In particular, it is rich in absorbing impact force, and in addition to the above-mentioned effect, by being curvedly deformed in a plan view arcuate shape in the vehicle traveling direction, it is possible to further reduce damage to a collision vehicle or a passenger.

According to the buffer type protective fence 1 of the present invention, as described in claim 2, the upper body 2 forming the cushioning material 4 "in the buffer type protective fence 1 according to claim 1 is an interface 3a of the lower body 3
Member 7c or lower body 3 connected to foundation concrete 11 through connecting member 7a or lower body 3 provided in
It is fixed or fastened to at least one of itself. In the shock-absorbing protective fence 1 having such a configuration, the integrity of the upper skeleton 2 forming the cushioning material 4 ″ and the members located below the upper skeleton 2 is improved. The elasticity and toughness of the connecting member 7a assist absorption and relaxation of the impact force by the cushion member 4 "and assist the effect of restoring the cushion member 4" (upper body 2) to its original state. Does not move or fall over on the lower frame 3. Also, in the case where the connecting member 7c is employed, the connecting member 7c from the base concrete 11 to the upper level is inevitably long, and the elasticity and the toughness assist. The capacity is further enhanced to make the entire structure of the shock-absorbing protective fence 1 a safe structure.In addition, the structure adopting the fastening is such that the upper frame 2 is divided from the lower frame 3 in addition to the improvement of the integration. Separately installed Since it, together with the cushioned fences 1 Construction and prefabricated is simplified, should a top building frame 2 has a benefit that allows replacement when damaged.

The upper frame 2 for a buffer type protective fence according to claim 3 of the present invention is the upper frame 2 which is fixed or connected in a belt shape over the lower frame 3 in the longitudinal direction and forms a protective fence. The frame 2 is formed of an elastic body so as to form an anti-vehicle wall surface 17 by connecting its side wall to the side wall of the lower frame 3 and to form a cushioning material 4 "as a cushioning member. The upper frame 2 having the above-described structure is entirely formed of a band-shaped cushioning material 4 ″ having elasticity so as to form a buffer in the length direction of the lower frame 3, so that the upper frame 2 itself has an impact force. It is excellent in the ability to absorb and mitigate the impact, and has a spring-like effect of swinging in the direction of the side wall even if it receives an impact force on the lower skeleton 3, and an effect of bending and deforming in a vehicle running direction into a bow shape in a plan view. Damage to itself It can be minor to stop General Domel the impact on the passenger to beauty.

The upper frame 2 for the buffer type guard fence of the present invention comprises:
According to a fourth aspect of the present invention, the lower body 3 is fitted with the concave part 3b and / or the convex part 3c provided at the interface 3a of the lower body 3.
The projection 2c and / or the concave portion 2b are provided at the interface 2a of the upper frame 2 forming the cushion material 4 ″ described above.
Since the concave and convex portions provided on the a and 3a are fitted to each other and connected to the lower frame 3, the integrity with the lower frame 3 is improved, and the effect of preventing separation from impact force is exhibited.

The upper or lower frame for the buffer type guard fence according to the fifth aspect of the present invention is interposed between the upper frame 2 and the lower frame 3 and the interfaces 2a and 3a between the upper and lower frames 2 and 3. A buffer or a buffer interposed between the bottom surface 20 of the lower frame 3 and the foundation concrete 11 in addition to the buffer;
The side walls of the upper and lower skeletons 2, 3 located on the vehicle running side serve as anti-vehicle wall surfaces 17, and are provided on the road surface along the running direction of the vehicle. At least one surface is formed as a convex curved surface or a curved surface, or a refracted inclined surface toward a side portion. If the shock-absorbing protective fence 1 composed of the upper skeleton 2 and the lower skeleton 3 is on a road that is continuously connected along the traveling direction of many vehicles and the traveling vehicle collides with the anti-vehicle wall surface 17 by mistake, Upon receiving the impact force, the lower skeletons 2, 3 are tilted to the side opposite to the vehicle collision side, between the interfaces 2a, 3a of the upper skeleton 2, 3 or between the bottom surface 20 of the lower skeleton 3 and the foundation concrete 11. The shock absorbing force is absorbed and mitigated by the compression of the cushioning member provided in the device, which causes elastic deformation and contraction. At this time, the surface shape forming the convex curved surface or curved surface of the interface 2a, 3a or the bottom surface 20 or the refraction inclined surface toward the side becomes non-parallel to the opposing surface, and the impact force is applied. Since the lower skeletons 2 and 3 are more easily tilted in the side wall direction, the impact force can be efficiently absorbed and reduced, so that damage to a collision vehicle and injury to a driver can be prevented. Also, after the impact force retreats,
In addition to being tilted by the elastic repulsive force of the compressively deformed shock absorber, the interfaces 2a and 3 make the upper and lower frames 2, 3 easily swing when the lower frames 2, 3 are pushed back to the vehicle collision side.
a or the surface shape of the bottom surface 20 can be smoothly raised in the original state to secure traffic safety. In addition, according to the surface shape of the interface 2a, 3a or the bottom surface 20, the upper and lower skeletons 2 are formed by the impact force acting from the side wall direction of the shock absorber provided along the surface, that is, from the anti-vehicle wall surface 17 side. Since the thickness is inevitably thicker toward the end 4c side of the shock absorber on which the large compression or tensile force acts due to the inclination of 3,
Even when a large impact force is applied to the anti-vehicle wall surface 17, the cushioning member shrinks without crushing, and the repulsive force increases.

According to a sixth aspect of the present invention, there is provided the upper or lower skeleton, wherein the convex or curved surface or the curved surface according to the fifth aspect is provided.
Alternatively, a support portion 30 is provided on a surface formed as a refraction-shaped inclined surface toward the side portion so as to abut on the opposing surface in a non-fitting state. If the buffer type protective fence 1 is constituted by the upper frame 2 or the lower frame 3, the weight of the upper and lower frames 2, 3 is supported by the support portion 30, so that the upper and lower frames 2, 3 are always supported by the elastic body. The load is reduced, and its fatigue and deterioration are prevented beforehand. In addition to receiving the impact force and the elastic repulsive force of the shock-absorbing cushion, the lower frame 2, 3
When swinging in the direction of the side wall, the upper and lower parts are rotatable with the supporting portion 30 which is in non-fitting state and the interface 2a, 3a or the contact portion between the foundation concrete 11 as a fulcrum. The skeletons 2 and 3 can be more easily rotated in the side wall direction.

According to a seventh aspect of the present invention, there is provided an upper or lower skeleton for a shock-absorbing protective fence, wherein one of the anti-vehicle wall surfaces 17 of the skeleton according to any of the third to sixth aspects is formed on a face. The protection fence is formed in a substantially L-shape when viewed from the end face. When the buffer type protective fence 1 is constituted by the upper skeleton 2 or the lower skeleton 3, the anti-vehicle wall surface 17 side can be used as a road, and the other face 18 can be used as a sidewalk or a bicycle path. Traffic safety in the area can be secured.

The upper frame 2 for the buffer type guard fence of the present invention comprises:
According to an eighth aspect, a bulging portion 13 projects outward from an upper end portion of the upper skeleton 2 according to any of the third to seventh aspects. When the shock-absorbing protective fence 1 is configured by the upper skeleton 2 having such a configuration, when the collision vehicle causes a bounce or the like, the bulging portion 13 prevents the vehicle from getting over,
During the construction, the bulging portion 13 can be used as an engaging portion of the hanging tool. Further, when the upper frame 2 is formed to have a substantially L-shape when viewed from the end, and the back body 2 is filled with the soil 22 to plant trees, the bulging portion 13 reduces exhaust gas from the vehicle. Rippling on the roadway side, it is possible to avoid direct hits on the trees and prevent their death.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1A, reference numeral 1 denotes a buffer type protective fence according to the first embodiment of the present invention. Hereinafter, a length direction (a depth direction in FIG. 1) of the buffer type protective fence is defined as a road direction. The direction extending between both side surfaces (the left-right direction in the figure) is referred to as a side wall direction. The buffer type protective fence 1 is composed of a lower body 3 made of a rigid body (mainly made of concrete) and an upper body 2 made of an elastic body, and both sides located in the side wall direction of the upper and lower bodies 2 and 3. The surface is formed as a belt along the traveling direction (road direction) of the vehicle with the surface serving as the vehicle wall surface 17. More specifically, lower frame 3
The anti-vehicle wall surface 17 located on both sides of the horizontal interface 3a forming the upper surface is formed as a gentle slope with a downward gradually opening shape,
An anchor bolt embedding hole 9 is formed in the inclined surface so as to form a pair in a side wall direction.
And the lower body 3 is connected to the base concrete 11 by filling the fixing material 12 such as mortar. Thus, on the interface 3a of the lower frame 3, a material such as a reclaimed rubber compound in which rubber or waste vulcanized rubber chips are bonded by a binder, urethane, nylon, or another synthetic resin having elasticity is used as a material. As a result, the entire body has elasticity, and the upper body 2 having a steeply inclined surface which gradually reduces the anti-vehicle wall surface 17 in the direction of the side wall slightly upward is formed as a cushioning material 4 ″ as a cushioning member in a belt shape over the road direction. And is directly fixed.
When the impact force F acts on the anti-vehicle wall surface 17 of the shock-absorbing protective fence 1 from the left side, the upper frame 2 which entirely forms the cushioning material 4 ″ as a buffer, as shown in FIG. The entire upper part undergoes elastic deformation from the base of 3 and bends rightward in a bow shape, effectively absorbing the impact force F.
ease. At this time, in the upper skeleton 2 as the cushioning material 4 ″, the vehicle collision side (left side) from the center in the side wall direction.
Elongation deformation occurs on the cross section of, and on the opposite side (right side)
Deformation occurs in half of the cross section, and a tensile force Pt that tries to pull back the elongation deformation and a repulsion force Pa that tries to push back the compression deformation are generated therein, thereby preventing further excessive tilting. At the same time, after the retraction of the impact force F, the entire structure exerts a spring-like action of swinging in the side wall direction, so that the upper frame 2 can be quickly returned to the original state. Furthermore,
Since the upper frame 2 has cushioning properties as a whole, it has an extremely high ability to absorb and mitigate an impact force as compared with a conventional rigid wall, and also has a plan view in the vehicle running direction with respect to the impact force. There is an advantage that the effect of bending and deforming in a bow shape is also exerted and the influence of the impact force on the colliding vehicle and the occupant is reduced.

2 to 6, another embodiment of the shock-absorbing fence according to the first embodiment will be described. First, as shown in FIGS. 2 (a) and 2 (b), the buffer type protective fence 1 has an interface 3a of a lower frame 3 formed in a convex curved surface, and is fixed on the interface 3a to form a whole. Is a composite structure in which the upper frame 2 as a cushioning material 4 "that forms a cushioning body has a composite structure. More specifically, the interface 2a of the cushioning material 4" has a concave curved surface to conform to the curved surface of the interface 3a. Although it is formed, the area immediately above it is divided into a substantially drum-shaped cross section symmetrical with the interface 2a in the up-down direction, and such a portion is formed of a soft elastic body 4 ″ d.
The upper part of the shock-resistant protective fence 1 is formed integrally with the hard elastic body 4 "e.
Acts from the left side, as shown in FIG. 2B, the portion at the base of the upper frame 2 is made of a soft elastic body 4 ″ d having a substantially drum-shaped cross section, so that the soft elastic body 4 ″ d becomes large. In addition to the compression (right) or elongation (left) deformation, the upper hard elastic body 4 ″ e also undergoes elastic deformation as a whole and bends to the right in an arcuate manner. Since flexibility is added to the base portion of the upper skeleton 2 according to the first embodiment, the ability to absorb and reduce the large impact force F, the ability to quickly restore the upper skeleton 2 to its original state, and the The shock-absorbing protective fence 1 having particularly excellent ability to avoid damage and injuries to passengers can be provided.

The buffer type fence 1 shown in FIG.
A concave portion 3b is formed at an interface 3a of the lower frame 3, and a convex portion 2c is formed at an interface 2a of the upper frame 2 as a cushioning material 4 "which forms a buffer.
Since the upper and lower frames 2 and 3 are fixed to each other by the concave and convex fit, the integrality of the upper and lower frames 2 and 3 can be improved, and the upper frame 2 can be prevented from falling or falling off against an impact force. Fig. 3 (b)
4 (a) shows a modified embodiment of the buffer type protective fence 1, and FIG. 3 (b) shows a modified example of the both-sides vehicle wall 17 of the upper frame 2 which forms a cushion as a cushioning material 4 ″. A semicircular bulging portion 13 is provided at the upper end in the side wall direction, and a reinforcing member 25 made of a steel rod is arranged in a mesh at a substantially central portion of the inside of the cushion member 4 ″. Lumber 2
5 enhances the strength of the entire cushion material 4 ″ and the convex portion 2c that protrudes from the interface 2a and fits into the concave portion 3b of the interface 3a, and absorbs, reduces, and absorbs an impact force by the elasticity and toughness, which are characteristics of the steel rod. 4A assists in returning the upper frame 2 to its original state, and the concave and convex fitting at the interfaces 2a, 3a of the upper and lower frames 2, 3 is performed by a plurality of concave portions 2b, 3b and convex portions 2c. 4b, the integrity is further improved, and the buffer type protective fence 1 shown in FIG.
a to a steel rod as a connecting member 7a which is integrally erected from
Since the upper frame 2 forming a cushion is directly fixed to the cushioning material 4 ″, the connection between the upper frame 2 and the lower frame 2 is further strengthened, and the effect of the characteristics of the steel bar can be obtained. Can be provided.

The buffer type protective fence 1 shown in FIGS. 5 (a) and 5 (b) has a cushioning member 4 "which forms a buffer on a connecting member 7a integrally implanted from an interface 3a of the lower frame 3. The upper skeleton 2 is separately fastened. More specifically, the two upper skeletons 2 having a panel shape are connected to the interface 3.
A plate member made of steel or the like as a connecting member 7a standing upright at a substantially central portion of the upper and lower frame members 2a is sandwiched from both sides in the side wall direction and fastened by a plurality of bolts 10 'and nuts 15. , 3 are integrated.

Next, the cushioning type protective fence 1 shown in FIGS. 6A to 6C has a cushioning member 4 ″ in which an upper body 2 forming a cushion is directly fastened to the lower body 3 itself. A plate as a connecting member 7a attached to the opposite vehicle wall surface 17 so as to straddle the interfaces 2a and 3a in the vertical direction is a nut embedded in the opposite vehicle wall surface 17 as shown in FIG. It is fastened with a bolt 10 'to the connector 15. Here, the interface between the interfaces 2a and 3a is improved by the concave and convex fitting of the concave portion 2b and the convex portion 3c.
It is not an essential condition to provide concave and convex portions on the interfaces 2a and 3a. Also, the one shown in FIG.
Are formed on the curved surfaces, respectively, and the concave portion 3b and the convex portion 2c provided on the curved surface are concavely and convexly fitted, and a bolt as a connecting member 7a is inserted into the through hole 5 penetrating the concave and convex fitted portion in the side wall direction. By inserting and fastening with the nut 15, the upper and lower frames 2, 3 are integrated. Further, FIG. 3 (c) shows a blind hole 6 formed in the nut 15 buried from the upper part of the upper frame 2 in the nut 15 embedded in the center of the interface 3a, with the interfaces 2a and 3a formed on the respective bent surfaces. By inserting and screwing a bolt as a connecting member 7a from the through hole 5 provided at the lower end of the
The lower frames 2, 3 are connected.

5 and 6, the upper frame 2 serving as a cushioning member 4 "can be separated from the lower frame 3 by releasing the fastening. Therefore, there is an advantage that the assembling work on the site can be easily performed, labor can be saved, and even when an unexpected situation occurs in the upper frame 2 and replacement is required, the replacement can be easily performed. Fig. 6 (b) and (c)
Are formed on a curved surface or a curved surface, respectively, so that the upper skeleton 2 as the cushion material 4 ″ is formed.
Has an effect of being easily inclined in the side wall direction.

Next, in FIG. 8, the shock-absorbing protective fence 1 is composed of a rigid body (mainly made of concrete), a lower frame 2, 3 and a buffer interposed between the upper and lower frames 2, 3. The cushion-type protective fence 1 will be described with a cushion member 4 as a body (elastic body).
Thus, it is laid along the road surface R along the traveling direction (road direction) of the vehicle and between the connecting walls 8 at both ends thereof with the cushion material 4 interposed therebetween. Here, the upper skeleton 2 is formed such that its anti-car wall surface 17 is formed on a steeply sloping surface that slightly shrinks upward, and that both sides of the interface 2a that forms the bottom are formed as sloping surfaces that are bent upward. .
In addition, approximately in the center of the interface 3a forming the upper surface of the lower frame 3,
In order to abut on the most protruding surface of the interface 2a,
A convex portion 3c having a substantially trapezoidal cross-section is formed as 0, and anti-vehicle wall surfaces 17 located on both sides of the convex portion 3c are formed on a gentle inclined surface gradually lowering downward, and an anchor bolt burring hole 9 is formed in the inclined surface. Are drilled in pairs in the direction of the side wall, and furthermore, anchor bolts 10 to be erected from the foundation concrete 11 are loaded into the anchor bolt burial holes 9 and a fixing material 12 such as mortar is filled, so that the lower frame 3 and the foundation Concrete 11 is connected. Also, the cushioning material 4 forming the cushion is formed in a belt shape as shown in FIGS. 7A and 7B, and the upper surface thereof is formed as an inclined surface so as to follow the bent surface of the interface 2a projecting. It is formed in a gradually opening shape toward the part 4c side. In addition, such a cushion material 4 has an interface 2a,
It is divided symmetrically so as to be located on both sides of the support portion 30 between the portions 3a. However, as shown in FIG. You can also. The cushion member 4 is fixed to the interfaces 2a, 3a of the upper and lower frames 2, 3, respectively, so that the three members are integrally connected. Thus, as the cushion material 4, for example, rubber products, waste tires,
Elastically deformable rubber compound, such as a recycled rubber compound obtained by blending a rubber chip made from waste vulcanized rubber generated in the production process of a recycled tire with a binder of a polyurethane prepolymer having a terminal isocyanate group, and other synthetic resin products Is mentioned.

Next, the operation when the vehicle collides with the shock-absorbing protective fence 1 and the impact force F acts on the anti-vehicle wall surface 17 of the upper frame 2 will be described with reference to FIGS. I do.
The upper frame 2 receiving the impact force F from the left side in the state shown in FIG. 3C is tilted rightward as shown in FIGS. 4D and 4E, and the cushion material 4 between the interfaces 2a and 3a is provided.
The right side portion of the upper portion 2 is elastically deformed by compression and contracts, and a repulsive force Pa is generated along with the elastic deformation to push back the upper skeleton 2 to the left side. At this time, the cushion material 4 is fixed to the respective interfaces 2a, 3a, so that the opposite side,
That is, a tensile force Pt accompanying the elongation deformation acts on the left side portion of the cushion member 4 to try to pull the upper skeleton 2 back to the lower skeleton 3 side. Therefore, immediately after the collision, the right side portion of the cushion member 4 compressively deforms, absorbs and relieves the impact force F, and expands and deforms the left side portion thereof to prevent the upper frame 2 from being excessively tilted, and to reduce the impact force. After the retreat of F, the upper frame 2 is pushed or pulled back to the left by the repulsive force Pa caused by the compressive deformation and the tensile force Pt caused by the elongational deformation (a symmetrical figure with the same figure: not shown). By repeating the movement on both sides of the cushion member 4, the upper frame 2 returns to the state before the collision in a short time. In the upper frame 2, the interface 2 a is formed on an inclined surface which is bent upward and the horizontal most protruding surface of the interface 2 a is not fitted to the convex portion 3 c as the support portion 30 of the lower frame 3. Because the weight of the cushion member 4 is supported by being brought into contact in the combined state, the load applied to the cushion member 4 is reduced at all times, thereby preventing the cushion member 4 made of an elastic body from being fatigued and deteriorated. The upper frame 2 is easily swung in the side wall direction by the rotatable structure with the contact portion as a fulcrum,
In addition, the thickness of the cushion material 4 near the end 4c that fills the interface between the non-parallel surfaces 2a and 3a is increased, so that the amount of elastic deformation due to compression and tension is increased, thereby absorbing and relaxing the impact force. In addition, the upper frame 2 is efficiently restored to its original state. The cushioning material 4 provided between the connecting walls 8 absorbs and attenuates the impact force to be transmitted to the shock-absorbing protective fence 1 adjacent to the shock-absorbing protective fence 1 receiving the impact force. Safety as a protective fence can be improved.

FIGS. 9 (a) to 9 (d) show the upper and lower frames for a buffer type guard fence according to another embodiment, and the interfaces 2a and 3a of the upper and lower frames 2 and 3 are respectively convex. It is formed in the shape of a curved surface, and at the upper end of the anti-car wall surface 17 of the upper skeleton 2,
A substantially semicircular bulging portion 13 protruding in the side wall direction is provided, and each of the outer bending portions of the upper and lower skeletons 2 and 3 is formed in an arc shape, so that the whole has a rounded appearance. or,
The cushioning material 4 forming the cushion is located between the interfaces 2a and 3a, and the upper and lower surfaces thereof are concave curved surfaces so as to follow the curved surfaces of the interfaces 2a and 3a. At the same time, it is provided intermittently in the road direction (vehicle running direction), and a space 16 is formed between the interfaces 2a and 3a. Further, the upper and lower skeletons 2 and 3 are connected to each other with a steel bar as a connecting member 7a via the cushion member 4. More specifically, the connecting member 7a is integrally implanted in advance at substantially the center of the interface 3a of the lower frame 3, and
The connection member 7a is inserted into a through hole 5 formed from the top of the upper frame 2 and is filled with a fixing material 12 such as mortar. Thus, the anchor bolts 10 erected from the foundation concrete 11 are loaded into the anchor bolt burial holes 9 of the lower frame 3 and the anchor bolt burial holes 9 are provided.
By filling the inside with a fixing material 12 such as mortar, the both are integrated to form the buffer type protective fence 1. In addition, what is shown in the same figure (a) is that the cushioning material 4 or the two adjoining in the direction of the road are provided between the upper and lower frames 2, 3 and intermittently, so that the cushioning type protective fence 1 is provided. A space 16 is formed at the center in the road direction, and the space 16 is formed between the interfaces 2a and 3a of the buffer type protective fence 1 at the center and both ends in the road direction, as shown in FIG. In this case, two cushion members 4 are intermittently provided in a clogged tooth shape.

In addition, the buffer type protective fence 1 composed of the lower frames 2, 3 has a convex curved surface, and the interfaces 2a, 3a of the lower frames 2, 3 are vertically symmetrical. In addition, since each becomes a non-parallel surface and gradually expands in the side wall direction,
The upper frame 2 easily swings in the side wall direction on the cushion material 4 that satisfies the gap between the curved surfaces, and both end portions 4c of the cushion material 4 are also thickened to absorb and mitigate a large impact force, and the upper frame 2 Can be restored to its original state. Also, the elasticity and toughness of the connecting member 7a assist the absorption and relaxation of the impact force by the cushioning material 4 constituting the cushioning body, and assist the upper frame 2 in returning to the original state.
Even if an extreme impact force acts, it is possible to prevent the upper frame 2 from moving or falling with a strong fastening force. In addition,
A space 16 communicating with the side walls is intermittently formed between the interfaces 2a and 3a of the lower frames 2 and 3, and the lanes defined by the protective fence intermittently communicate with each other. And exhaust gas permeate the space 16 and mute or diffuse without stagnation, thereby suppressing deterioration of the road environment. The anti-vehicle wall surface 17 of the buffer type protective fence 1
Since the gently inclined surface of the lower frame 3, the steeply inclined surface of the upper frame 2, and the bulging portion 13 at the upper end thereof are vertically connected, and each of the bent portions is continuously formed in an arc shape, the collision vehicle Even if the tire runs on a gentle slope, the impact is small, and the steep slope prevents further riding, and the tire moves smoothly downward along the gentle slope and decelerates the vehicle. It can be returned to the original running path. Moreover, the bulging portion 13 has the effect of preventing the vehicle from climbing over when the collision vehicle bounces, etc., and can also be used as a hooking portion of the hanging tool when laying the buffer type protective fence 1. There is also an advantage (the same applies to the upper and lower frames 2, 3 in FIG. 3 (b), FIGS. 4 (a) and 4 (b)).

10 (a), a left section, (b) and (c) show a modified embodiment of the other embodiment, in which one upper body 2 is straddled on two lower bodies 3. A nut 15 buried at the center of the interface 3a of the lower frame 3 forming a convex curved surface, and a through hole 5 provided at the lower end of a blind hole 6 drilled from the top of the upper frame 2. By inserting and fastening a bolt as a connecting member 7a, the upper and lower frames 2, 3
Are connected, and the lower frame 3 is inserted into the through hole 5 provided in a part of the anti-vehicle wall surface 17 after the anchor bolt 10 erected from the base concrete 11 is inserted into the notch on the through hole 5. By fastening with the nut 15, the buffer type protection fence 1 integrally connected to the foundation concrete 11 is configured. Further, a cushion material 4 ′ ″ is fixed to the upper end portion of the opposite car wall surface 17 of the upper frame 2 in a band shape so as to protrude in the side wall direction, and a top opening of the blind hole 6 is closed by a cap 14. Become. Here, the cushioning material 4 as a buffer interposed between the interfaces 2a and 3a of the upper and lower frames 2 and 3 has a lower surface formed in a concave curved surface so as to follow the curved surface of the interface 3a. As shown in the figure, by providing the space 16 intermittently at the approximate center thereof,
It has a substantially ladder-like planar shape and is formed to be long so as to correspond to a plurality of upper and lower frames 2 and 3. In the buffer type protective fence 1, in addition to the interface 3a of the lower frame 3 and the lower surface of the cushioning material 4 abutting on a curved surface, the cushioning material 4 having a discontinuous central portion allows the interface 2a, 3a Void 16 is formed in the interface 2
The contact area and resistance between the a and 3a and the cushion material 4 are reduced, and the upper frame 2 is more likely to tilt in the side wall direction. Furthermore, since one upper body 2 is straddled between the two lower bodies 3 and the cushioning material 4 is also provided between the connecting walls 8 adjacent to each other, the integration in the road direction is improved. In addition to the fact that the upper frame 2 tilts toward the side wall with respect to the colliding vehicle, the impact force is absorbed by being curved and deformed into a bow shape in plan view,
The cushioning member 4 '''at the upper end of the upper skeleton 2 also contributes to absorption and mitigation of the impact force, so that the safety as a series of separation zones can be made particularly excellent. Also, the upper and lower frames 2, 3 and the foundation concrete 1
1 and the lower skeleton 3 are fastened with bolts and nuts, so that on-site assembly is easy and quick workability can be secured, and even if the upper skeleton 2 is damaged by a vehicle collision, There is also an advantage that the replacement of the upper frame 2 can be easily performed. Also, as shown in the right section of FIG. 10, (d) and (e), a support portion 3 which comes into contact with the interface 2a at a substantially central portion of the interface 3a of the lower frame 3 in the side wall direction.
A convex portion 3c having a substantially semicircular cross section as 0 protrudes toward the road in a desired length (in this embodiment, the length is set to a length that can be accommodated in the cavity 16 of the cushion material 4). The configuration provided may be adopted. In the lower frame 3, since the interface 2 a of the upper frame 2 is rotatably abutted on the upper end of the convex portion 3 c as the support portion 30 in a non-fitting state, the buffer type shown in FIG. Like protection fence 1,
It is intended to prevent fatigue and deterioration of the cushion member 4 at all times and to improve the inclination of the upper skeleton 2 at the time of a vehicle collision. In addition, as shown in FIG.
In place of the above, the convex portion 2c from the interface 2a of the upper frame 2
The functions and effects exerted even in the case of protruding as 0 are as described above, and the form of the protrusions 2c, 3c as the support portions 30 in the road direction is an example, and is provided at a necessary place at a necessary length. As shown in FIG. 8G, a cylindrical body having an arbitrary shape can be separately provided between the interfaces 2a and 3a to form the support portion 30 (the convex portion 3c shown in FIG. 8 can also be used). Similar). In addition, the cushion material 4 which forms the cushioning member
Has a substantially central portion interrupted in the direction of the road by a rectangular void 16, but the planar shape of the void 16 is not limited to a square, and its size, position, and the like are arbitrarily set. I just need. Further, the configuration in which the substantially central portion is intermittent can be similarly applied to the cushion material 4 having the convex portion 4d and / or the concave portion 4e on its upper surface and / or lower surface described later.

12 (a) to 12 (d), another embodiment of the upper and lower frames will be described.
The three interfaces 2a, 3a are provided with concave portions 2b, 3b or convex portions 2c, 3c to be fitted with the convex portions 4d or the concave portions 4e provided on the cushion material 4 as a buffer. More specifically, what is shown in the figure (a) is an upper frame 2 provided with a bulging portion 13 at an upper end portion of a both-vehicle wall surface 17,
Interfaces 2a and 3a of the lower frame 3 having rounded bends on both anti-vehicle wall surfaces 17 are respectively formed on convex curved surfaces, and concave portions 2b and 3b are provided at the center of the interfaces 2a and 3a. The cushion member 4 interposed between the upper and lower skeletons 2 and 3 has an interface 2 whose upper and lower surfaces are the convex curved surfaces.
a, 3a, and a protrusion 4d provided at the center of the upper and lower surfaces thereof is fitted in the recesses 2b, 3b. In addition, a reinforcing member 25 made of a steel rod is provided in the convex portion 4d protruding from the upper and lower surfaces of the cushion material 4 in the vertical direction to reinforce the convex portion 4d itself. The force assists the absorption and relaxation of the impact force and the action of restoring the upper body 2 to its original state. In FIG. 2B, both sides of the interface 2a are upwardly inclined surfaces, and the interface 3a is a convex curved surface.
A concave portion 2b is formed at the center of the
a, the cushion material 4 filling the recesses 2b between the 3a and the recesses 2b is a concave and convex curved surface, and the end 4c is formed in a concave surface recessed from the car wall surface 17, and a convex portion 4d is provided on the upper surface. In the case shown in FIG. 3C, the interface 3a is formed to have a convex curved surface, and the interface 2a is formed by providing a convex portion 2c at the center of a flat surface. In addition, the cushioning material 4 that satisfies the gap between the interfaces 2a and 3a is formed in a flat, substantially concave shape in which the lower surface is a concave curved surface and the upper surface is provided with a concave portion 4e on a flat surface. In (d), the interface 2a is formed as an inclined surface having an upward refraction with both sides facing the side, and the interface 3a has a convex portion 3c at the center of the flat surface.
And the cushioning material 4 that fills the interface 2a, 3a is connected to the end 4c of the cushioning wall 4 by the anti-vehicle wall surface 17.
It is formed on a more protruding protruding surface, the upper surface has a concave curved surface shape, and the lower surface has a concave portion 4e provided at the center of a flat surface. In addition, in the lower frames 2, 3, the cushioning material 4 as a buffer for absorbing and relaxing the impact force and returning the upper frame 2 to its original state and its interfaces 2a, 3a.
Are fitted on at least one surface thereof, and the mutual integrity is ensured. Therefore, it is possible to prevent the cushion material 4 from being detached from the interface 2a or 3a against an impact force.

Further, as shown in FIGS. 13A and 13B,
The lower skeletons 2 and 3 engage the locking portions 2d and 3d formed at the ends of the interfaces 2a and 3a on the end 4c side of the cushion material 4 as a buffer. On the right side of FIG. 2A, the upper and lower corners on the end 4c surface of the cushion material 4 are formed by raising the ends of the interfaces 2a and 3a forming a convex curved surface as a horizontal plane. The end portions 4c are slightly recessed from the anti-car wall surface 17 respectively. The left side of (a) shows the end of the interface 2a, 3a where the notch 4f formed by notching the upper and lower corners of the cushion material 4 forms a convex curved surface. They are respectively engaged with locking portions 2d, 3d formed by being raised in synchronization with the curved surface. Next, what is shown on the left side of FIG. 2B shows the state of engagement between the lower surface of the cushion material 4 and the interface 3a described above.
The upper surface of the cushioning material 4 and the interface 2a are respectively formed in a horizontal plane, and
The part shown on the right side of (b) is formed by notching the upper corner of the cushion material 4 so that the end of the interface 2a that forms a horizontal plane rises as a horizontal plane. The lower surface of the cushion member 4 and the interface 3a are formed in a bent surface so as to be engaged with the locking portion 2d. In the shock-absorbing protective fence 1, the cushioning material 4 which forms a shock-absorbing body with the upper and lower skeletons 2, 3 is subjected to an engagement treatment at the ends of the interfaces 2a, 3a which are in contact with each other. Thus, the separation is prevented.

Further, as shown in FIGS. 14 (a) to 14 (c), the upper and lower frames 2, 3 each have one wall surface facing 18 and a cushion material as a cushion between the interfaces 2a, 3a. 4, the anti-vehicle wall surface 17 forms a substantially L-shaped protection fence formed on one side on the other side, and more specifically, the one shown in FIG. One (left) wall surface is formed on a face 18 that gradually opens downward from the upper and lower skeletons 2 and 3, and the other (right) wall surface is a steep slope where the upper skeleton 2 contracts upward. A substantially semicircular bulging portion 13 protrudes from the upper end of the surface, and the lower frame 3 is formed on a gentle slope with a gradually lowering downward shape. Thus, the lower body 3 having a substantially L-shaped end face and a downwardly bent surface is formed by the anti-car wall surface 17 and the face 18.
A substantially trapezoidal projection 3c as a support portion 30 is provided at a substantially central portion of the interface 3a, and a gradually outwardly extending cushion material 4 whose center portion is intermittently located on both sides thereof. A through-hole 5 drilled from the top of the upper skeleton 2 is inserted into a steel rod as a connecting member 7a integrally planted, and the upper surface of the convex portion 3c as the support portion 30 and the upwardly bent surface are bent. The most protruding surface of the interface 2a formed is brought into contact with the non-fitting state, and the fixing material 12 is filled in the through hole 5. In addition, the lower frame 3 is loaded with anchor bolts 10 erected from the foundation concrete 11 in anchor bolt burial holes 9 provided below the anti-vehicle wall surface 17, and a fixing material 12.
Is connected to the foundation concrete 11 by filling. Next, FIG. 2 (b) shows a modification of the upper and lower frames in the above (a). The lower portion of the anti-vehicle wall 17 of the lower frame 3 is extended in the side wall direction so that a flat portion is formed. 17
a is formed, and the interface 2 between the upper and lower frames 2 and 3 is formed.
a and 3a are formed on a curved surface having convex portions and concave portions 2b and 3b, respectively, and the upper and lower surfaces filling between the interfaces 2a and 3a and the concave portions 2b and 3b are concave curved surfaces and provided with a convex portion 4d. The material 4 connects the upper and lower skeletons 2 and 3. An anchor bolt 10 erected from the foundation concrete 11 is integrated in an anchor bolt burial hole 9 drilled in the flat portion 17a. Further, as shown in FIG. 3 (c), the lower skeletons 2 and 3 have the anti-vehicle wall surface 17 provided on one side and the other side facing 18 and the buffer type protective fence 1
Is formed in a substantially L-shape as viewed from the end face, and the cushioning material 4 is interposed between the interfaces 2a and 3a which are convex curved surfaces that gradually open on the face 18 side, and the upper part is formed from the center of the interfaces 2a and 3a. Small-diameter through-holes 5 are formed through the top of the frame 2 and the bottom 20 of the lower frame 3, respectively.
An anchor bolt as a connecting member 7c erected from 1 is elongated, is positioned in the small-diameter through hole 5, penetrates the upper and lower skeletons 2, 3, and is provided with a nut 15 on the upper surface of the upper skeleton 2. Become concluded. In addition, the lower frame 2,
In each of the shock-absorbing protective fences 1 consisting of 3, by being installed on the road side of the road, the anti-vehicle wall surface 17 side can be made into a roadway, and the other face 18 side can be divided into a sidewalk, a bicycle path, and the like. By installing in a dangerous place such as a terrain (cliff, shore, etc.) where the 18 side (outside the road) is low, it is possible to prevent the vehicle from deviating off the road on the road side.

FIG. 15 shows another embodiment of the buffer type protective fence having a substantially L-shape in end view and having soil 22 behind it. The buffer type protective fence 1 has one wall surface 18 in the side wall direction.
On the lower frame 3 having the water retaining material 23 and / or the heat insulating material 24 attached to the face 18, the upper frame 2, which is entirely made of an elastic body and forms a buffer, is fixed as a cushion material 4 ″. Here, the upper and lower skeletons 2 and 3 are connected by the concave and convex fitting of the convex portions 2c and the concave portions 3b provided at the interfaces 2a and 3a thereof, and the anchor bolts of the foundation concrete 11 are provided. The lower body 3 is fastened to the nut 10 by a nut 15. The upper surface of the soil 22 filled on the face 18 is set at a position depressed from the upper end of the upper body 2. Such a buffer type protective fence. 1, when the filled soil 22 is directly connected to the ground and provided with a water retaining material 23, the soil 22 is maintained in a moderately water-containing state. High in exhaust gas Since the conduction heat from the converted lower frame 3 is blocked and its drying is prevented, the trees always prosper without dying, and the greenery can relieve the eyestrain of the driver. In addition to absorbing and mitigating the impact force of the upper body 2 as the cushioning material 4 ″ forming the body, the filled soil 22 also receives and absorbs and reduces the impact force acting on the upper body 2,
To return to the collision side, so that the double damping and returning to the original state can be achieved. Furthermore,
Since the entire upper frame 2 is made of an elastic body, the upper frame 2 itself has a heat insulating effect to prevent the filled soil 22 and the plants from being heated, and a ventilation effect can be obtained if the cushion material 4 ″ is provided with air permeability. Therefore, even if the surface of the soil 22 is depressed on the face 18 side, it is possible to prevent the exhaust gas and the like from staying in the place, thereby preserving the air environment for the vegetation.
In this figure, the left end is omitted by a broken line. However, such a buffer type fence 1 may be used symmetrically to form a median strip, or the left end may be formed. A green belt can be formed on the road side by providing another structure such as a wall body. In addition, the anti-car wall surface 1 of the upper frame 2
It is also possible to provide a bulged portion 13 having an arc-shaped cross section at the upper end on the 7th side. If such a bulged portion 13 is provided, the exhaust gas of the vehicle is waved back toward the roadway at the upper end of the anti-vehicle wall surface 17 and the tree is formed. Can avoid direct impact on the plant, and can extend the life of the plant.

FIG. 16 shows a shock-absorbing protective fence 1 according to another embodiment of the present invention. A connecting member for passing the lower frame 3 through the shock-absorbing protective fence 1 and connecting the upper frame 2 and the foundation concrete 11. 7c. More specifically, both sides in the side wall direction of the shock-absorbing protective fence 1 are formed on the anti-vehicle wall surface 17, and the upper body 2 as a cushion material 4 ″ is entirely located above the lower body 3. At the same time, small-diameter through-holes 5 extending from the center of the interfaces 2a, 3a to the top of the upper frame 2 and the bottom 20 of the lower frame 3 are respectively penetrated, and an anchor as a connecting member 7c standing from the base concrete 11 is provided. The bolt is elongated, and is located in the small-diameter through hole 5.
It penetrates the lower skeletons 2 and 3 and is fastened by a nut 15 on the upper surface of the upper skeleton 2. In the shock-absorbing protective fence 1, the upper and lower skeletons 2, 3 and the foundation concrete 11 are connected by one connecting member 7c to further improve the whole integrity, and the connecting member 7c is elongated. By increasing the elasticity and toughness in proportion to its length,
The ability to absorb and mitigate the impact force and the ability to return to the original state of the upper skeleton 2 are further enhanced, and the entire shock-absorbing protective fence 1 can be made to have a safe structure (similarly, the one shown in FIG. 14C).

17 (a) and 17 (b), another embodiment of the lower frame 3 for the buffer type protective fence will be described. The lower frame 3 forms a cushion between the lower concrete 3 and the foundation concrete 11. 21 constitutes the shock-absorbing protective fence 1 additionally provided. More specifically, the lower fence 1 shown in FIG. 1A is provided so that the lower cushion material 21 having a substantially concave cross section is entirely interposed. Both sides of the bottom surface 20 and the both side walls 3e are curved surfaces. The lower cushion member 21 having a substantially L-shaped cross section is provided on both sides of the bottom surface 20 so that a space 16 is formed between the bottom surface 20 and the foundation concrete 11, as shown in FIG. 3 is formed as a convex curved surface, and the most protruding portion of the curved bottom surface 20 becomes a support portion 30 that partially contacts the foundation concrete 11 in a non-fitting state. .
According to the shape of the bottom surface 20 of the lower frame 3, it is possible to cause the lower frame 3 to tilt when receiving an impact force by the lower cushioning material 21 forming the cushioning body, and to tilt the upper frame 2. In conjunction with this, the absorbing and mitigating action of the impact force and the restoring action of the protective fence are doubled. Here, the space 16 reduces the contact between the bottom surface 20 and the upper surface of the lower cushioning material 21, and the support portion 30 of the bottom surface 20 partially contacts the foundation concrete 11 in a non-fitting state, There is an operational effect that the lower frame 3 has a swingable structure and is easily inclined in the side wall direction.
In addition, as another aspect of the bottom surface 20 where the above-mentioned operational effects are to be exhibited, both sides thereof are inclined surfaces refracting upward, respectively.
The one where the most protruding surface at the center part is the support part 30 or the one where the substantially central part is locally protruded with an arbitrary cross-sectional shape to form the support part 30 are exemplified.

Next, the case where the cushioning body is provided with a marking function will be described. The end 4c surface of each cushion member 4 and / or the rising portion 21a of the lower cushion member 21 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, a portion having the material exhibits a line-of-sight guiding effect and facilitates traffic. The boundary between the shock-absorbing protective fence 1 itself and the road surface R is clearly indicated as a danger position to the driver, so that a collision at night can be particularly avoided. Thus, FIG.
When provided on the end 4c surface of the cushion material 4 shown in (d),
Since the end portion 4c surface protrudes in an arc shape from the anti-vehicle wall surface 17, it is well in the driver's field of view and is rich in recognition.
In addition, since the light is easily hit at night, the signability is excellent. It should be noted that the color tone may be freely set, and may be originally mixed into the material of each cushioning material, and further, the marking means may be freely set such as post-coating and post-adhesion.

The basic cross-sectional shape of the shock-absorbing protective fence 1 in each of the above embodiments is merely an example, and the specific shape is not limited thereto, and the design can be changed within the range intended by the present invention. is there. Further, the steel bar as the connecting member 7a, 7c or the reinforcing member 25 has superiority in mechanical properties such as elasticity and toughness, and is suitable for use, but the connecting member 7a, 7c or the reinforcing member 25 is preferable. Bolts, steel plates, wires, ropes, etc., can be used. The specific material and connection method are not limited. Further, the number of the connection members 7a, 7c, the reinforcing material 25, and the anchor bolts 10 may be changed. The position and the like are not limited.

Further, the length of the cushion member 4 as a buffer in the above embodiments in the road direction is not limited by the length of the buffer type protective fence 1, and the end face shape is also an example. Yes, upper and lower frames 2, 3 interface 2
a, 3a, or any shape that corresponds to the shape of the bottom surface 20 of the lower frame 3 may be used.

[0034]

The buffer type protective fence according to the present invention comprises an upper frame and a lower frame, is located on the vehicle running side, and is installed on the road surface with the side wall of the lower frame serving as the vehicle wall surface. In, since the upper frame made of an elastic body is fixed or fastened to the lower frame as a cushion material forming a buffer in a belt-like shape in the vehicle traveling direction, the upper frame itself becomes a buffer having elasticity as a whole, In response to the impact force at the time of a vehicle collision, the upper part from the base with the lower body undergoes elastic deformation and bends in an arc shape, effectively absorbing and mitigating the impact force, and at the time of the curved deformation, from the center in the side wall direction Since the cross section on the vehicle collision side is elongated, and the half section on the opposite side is compressed, after retracting the impact force, it tries to push back the tensile force and compression deformation that try to pull back such elongation deformation. Repulsive force is raw , The entire cushioning material to return quickly original state the upper precursor to exert a spring effect swinging the side wall direction. In addition, since the entire upper frame is an elastic body serving as a shock absorber and has a band shape in the vehicle traveling direction, it is particularly rich in absorbing an impact force, and in addition to the above-described operation, is curved and deformed into a bow shape in a plan view in the vehicle traveling direction. This further reduces the damage received by collision vehicles and passengers.

Further, in the shock-absorbing protective fence according to the present invention, the upper frame, which is entirely made of cushioning material and forms a buffer, is connected to the foundation concrete through a connecting member or a lower frame provided at the interface of the lower frame. Because the connection member or the lower body itself is fixed or fastened to at least one of the members, the integration of the upper body forming the cushioning material and the members located therebelow is improved, and the connection member,
Due to the elasticity and toughness of the connecting member, absorption and mitigation of the impact force by the cushioning material and the restoring action of the upper skeleton are assisted, and the upper skeleton 2 moves and falls on the lower skeleton 3 even under an extreme impact force. Never wake up. In addition, when the connecting member extends from the foundation concrete to the upper level, the connecting member is inevitably lengthened, so that the assisting ability by the elasticity and the toughness is further increased, and the entire buffer type protective fence has a safe structure. Further, in addition to the improvement of the above-mentioned integrity, since the upper frame and the lower frame can be separately installed in addition to the improvement of the integration, the entire structure is prefabricated, the construction is simplified, and the upper frame is damaged by any chance. It has the advantage of being able to be replaced when needed.

Further, the upper frame for the buffer type guard fence according to the present invention is fixed or connected in a strip shape over the length direction on the lower frame, and the side wall is connected to the side wall of the lower frame to form the anti-vehicle wall surface. In addition to forming a cushioning material as a cushioning body, since it is formed from an elastic body, the entire body has elasticity in the length direction of the lower body and is excellent in absorbing and mitigating ability of impact force, A spring-like action that swings in the direction of the side wall on the lower body and an action that bends into a bow shape in a plan view in the vehicle running direction, to minimize the damage to the collision vehicle and the upper body itself and the effect on passengers. .

Further, the upper frame for the buffer type guard fence according to the present invention is made of a cushion material as a whole, and is fitted to a concave portion and / or a convex portion provided at the interface of the lower frame.
Since the protrusions and / or recesses are provided at the interface, the integration and connection of the recesses and protrusions at the interface increase the integrity with the lower skeleton, thereby exerting an effect of preventing separation from impact force.

Further, the upper or lower frame for the buffer type guard fence according to the present invention may comprise an upper frame and a lower frame, and a buffer interposed between the interfaces of the upper and lower frames, or in addition to the buffer. The protection consists of the bottom of the lower body and a buffer interposed between the foundation concrete, and is located on the vehicle running side, and the side wall of the lower body forms the wall for the vehicle and is installed on the road surface along the running direction of the vehicle In the frame of the fence, at least one surface of the interface or the bottom surface is formed as a convex curved surface or a curved surface, or a refraction-shaped inclined surface toward the side portion. Even if the traveling vehicle accidentally collides with the anti-vehicle wall of the buffer type protective fence, it receives the impact force and the lower skeleton leans to the side opposite to the vehicle collision side, between the interface of the lower skeleton and the lower part Installed between the bottom of the building and the foundation concrete衝体 is compressed, by the contracting cause elastic deformation, the impact force is absorbed and alleviated. At this time, the convex or curved surface or the curved surface of the interface or the bottom surface, or the surface shape forming a refraction inclined surface toward the side becomes non-parallel to the opposing surface, receives the impact force, and lowers the lower body. Since it is easy to incline in the side wall direction, the impact force is efficiently absorbed and reduced, so that damage to the collision vehicle and injury to the driver can be prevented. In addition, after the impact force is retracted, in addition to tilting due to the elastic repulsive force of the cushioning body that is compressed and deformed, even when the lower body is pushed back to the vehicle collision side,
The upper and lower skeletons can be easily swung up to the original shape by the interface or bottom surface shape that makes it easy to swing, thereby ensuring traffic safety. In addition, according to the surface shape of the interface or the bottom surface, the upper and lower frames are tilted by the impact force acting from the side wall direction of the buffer provided along the surface, that is, from the side of the anti-vehicle wall, so that a large compression or Since the thickness is inevitably thicker toward the end where the tensile force acts, the shock absorber shrinks without crushing even with a large impact force acting on the anti-vehicle wall surface, and the repulsive force also increases. It also has the effect of increasing the size.

The upper or lower skeleton according to the present invention may be provided in a non-fitting state with the opposing surface at each of the interfaces formed as a convex curved surface or a curved surface, or a curved surface inclined toward the side. In order to provide a support portion that abuts on, if the buffer type protective fence is configured by such an upper frame or a lower frame, the buffer of an elastic body in which the own weight of the upper and lower frames is received by the support portion at all times. The load on
Deterioration is prevented beforehand, and when the lower frame swings in the direction of the side wall after receiving the impact force and the elastic repulsive force of the shock-absorbing member that compresses and deforms, the lower frame is in contact with the non-fitting supporting part. The rotatable structure with the contact point with the interface or the foundation concrete as a fulcrum makes the upper and lower skeletons more easily turn in the side wall direction.

The upper or lower frame for the shock-absorbing protective fence according to the present invention is formed such that one side of the anti-vehicle wall face is formed, and the end of the protective fence is formed in a substantially L-shape. The road side can be used as a roadway, and the other side can be used as a sidewalk or bicycle path, etc., and traffic safety on the roadside can be ensured.

The upper frame for the shock-absorbing protective fence according to the present invention has a bulged portion projecting outward at the upper end thereof, so that when the collision vehicle bounces due to the bulged portion. It is possible to prevent the vehicle from climbing over and to use the place as an engaging portion of the hanging tool at the time of construction. Furthermore, if it is formed to have a substantially L-shape as viewed from the end, and is adopted as an upper frame for a buffer-type protective fence that fills soil and plant trees behind the bulge, the bulging portion causes the exhaust gas of the vehicle to move toward the roadway. It is possible to extend the life of the tree by avoiding the wave and direct hit to the tree.

[Brief description of the drawings]

FIG. 1 is a shock-absorbing protective fence showing a first embodiment of the present invention, in which (A) is a laid cross-sectional view, and (B) is a partially enlarged cross-sectional view showing a collision state.

FIG. 2 is a buffer type protective fence according to another embodiment of the present invention, wherein (A) is a laid cross-sectional view, and (B) is a partially enlarged cross-sectional view showing a collision state.

FIGS. 3A and 3B are cross-sectional views of a buffer type protective fence according to another embodiment of the present invention, and FIG.

FIGS. 4A and 4B are cross-sectional views of a buffer type protective fence according to another embodiment of the present invention.

5A and 5B show a buffer type protective fence according to another embodiment of the present invention, wherein FIG. 5A is a perspective view of a lower frame, and FIG. 5B is a sectional view of the upper frame connected to FIG. ).

6 (a) to 6 (c) are partial cross-sectional views showing a fastening state of a lower frame above a buffer type protective fence according to another embodiment of the present invention.

FIG. 7 shows an example of a cushion material interposed between the upper and lower frames according to the present invention, wherein (a) is a plan view, (b) is a cross-sectional view taken along line BB in (a), and (c) is left and right. Sectional drawing which shows the other cushion material which was connected.

FIG. 8 is a buffer type protective fence constituted by upper and lower frames according to the present invention, wherein (a) is a partial front view showing a laid state, (b) is a plan view thereof, and (c) is ( A-A in b)
FIG. 3D is a laid cross-sectional view showing a collision state, and FIG. 4E is an enlarged cross-sectional view of the same part.

FIG. 9 is a shock-absorbing protective fence constituted by another upper and lower frame according to the present invention, wherein (a) and (b) are partial front views showing a laid state, and (c) is (a). And (b) is a cross-sectional view taken along line CC, and (d) is a cross-sectional view taken along line DD.

FIG. 10 is a buffer type protective fence constituted by another upper and lower skeleton according to the present invention, wherein (a) is a partial front view showing a laid state, and (b) is EE in (a). Sectional view,
(C) is a sectional view taken along the line FF, (d) is a sectional view taken along the line GG,
(E) is a cross-sectional view taken along the line II in (d), and (F) and (G) are partial cross-sectional views showing a connecting portion between the other upper and lower frames.

FIG. 11 is a plan view showing another cushioning material interposed between the upper and lower frames.

12A is a cross-sectional view of a buffer type protective fence constituted by the upper and lower frames according to the present invention, and FIGS. 12B to 12D show the connection state of the lower frame and the cushion material. FIG.

13 (a) and (b) are partial cross-sectional views showing a connection state of a buffer type protective fence constituted by another upper and lower frame according to the present invention.

14 (a) to (c) are cross-sectional views of the laying of a buffer type protective fence constituted by another upper and lower frame according to the present invention.

FIG. 15 is a partially laid cross-sectional view of a buffer type protective fence according to another embodiment of the present invention.

FIG. 16 is a laid cross-sectional view of a buffer type protective fence according to another embodiment of the present invention.

FIGS. 17A and 17B are cross-sectional views partially laying a buffer type protective fence constituted by another lower frame according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Buffer type protective fence, 2 ... Upper frame, 2a ... Interface, 2b ...
Recessed part, 2c ... convex part, 2d ... locking part, 3 ... lower frame, 3a
... Interface, 3b ... concave part, 3c ... convex part, 3d ... locking part, 4,
4 ″, 4 ′ ″: cushion material, 4c: end, 4d: convex, 4e: concave, 4f: cutout, 5: through hole, 6: blind hole,
7a, 7c: connecting member, 8: connecting wall, 9: anchor bolt burying hole, 10: anchor bolt, 11: foundation concrete, 12: fixing material, 13: bulging portion, 14: cap,
15 nut, 16 vacant space, 17 vehicle wall surface, 18 face, 20 bottom surface, 21 lower cushion material, 21a upright, 22 soil, 23 water retention material, 24 heat insulation material, 25
... Reinforcing material, 28 ... Connecting mat, 30 ... Support part, R ... Road surface, r ... Road material

Claims (8)

[Claims] 1. An upper frame (2) comprising an upper frame (2) and a lower frame (3).
In the protective fence installed on the road surface with the side wall of (3) serving as the anti-vehicle wall surface (17), the lower body (3) is formed by cushioning material (4 ″) in which the upper body (2) made of an elastic body serves as a buffer. A shock-absorbing protective fence, which is fixed or fastened in a belt shape in the vehicle traveling direction. 2. The base concrete is passed through a connecting member (7a) or a lower body (3) provided at an interface (3a) of the lower body (3). The shock-absorbing protective fence according to claim 1, wherein the shock-absorbing fence is fixed or fastened to at least one of the connecting member (7c) and the lower frame (3) itself connected to the (11). 3. An upper frame (2) which is fixed or connected in a strip shape over a length direction on a lower frame (3) to form a protective fence, wherein the upper frame (2) has a side wall having a lower frame (3). The cushioning fence, which is formed of an elastic body so as to form an anti-vehicle wall surface (17) by being connected to the side wall of (3) and form a cushioning material (4 ") as a cushioning member. Upper skeleton. 4. An upper frame (4) comprising said cushion material (4 '') so as to fit into a concave portion (3b) and / or a convex portion (3c) provided at an interface (3a) of said lower frame (3). 2)
(2c) and / or concave (2b) at the interface (2a)
The upper skeleton for a shock-absorbing protective fence according to claim 3, further comprising: 5. An upper frame (2) and a lower frame (3),
The interface (2a) between the upper and lower frames (2) and (3), (3
a) A buffer interposed between them, or in addition to the buffer, the bottom surface (20) of the lower frame (3) and the foundation concrete (11)
And a side wall of the lower skeletons (2) and (3), which is located on the vehicle running side, and
7) In the protective fence frame installed on the road surface along the traveling direction of the vehicle, at least one of the interfaces (2a), (3a) or the bottom surface (20) is a convex curved surface or a curved surface; Alternatively, an upper or lower skeleton for a shock-absorbing guard fence, wherein the upper or lower skeleton is formed with a refraction-shaped inclined surface toward the side. 6. A support portion (30) is provided on the convex bent surface or curved surface, or a surface formed as a refraction inclined surface toward the side, in a non-fitting state with an opposing surface. An upper or lower skeleton for a buffer type guard fence according to claim 5. 7. One of the anti-car wall surfaces (17) faces (1)
The upper or lower skeleton for a shock-absorbing protective fence according to any one of claims 3 to 6, wherein the upper or lower body is formed in (8), and the protective fence is formed in a substantially L-shape when viewed from the end. 8. The upper frame for a buffer type fence according to claim 3, wherein a bulge (13) projects outward from an upper end of the upper frame (2).