KR20230110049A - Guard rail structure with overturning prevention and shock absorbing capacity - Google Patents

Abstract

The present invention is a guardrail structure with enhanced fall prevention and shock absorption performance, comprising: a first member coupled to the front of a guardrail support; a second member vertically coupled to the front of the first member; A third member coupled vertically to the front of the second member and coupled to the rear of the guardrail at the same time, and the front lower side of the second member has a blockout portion partially cut and removed, so that the vehicle can be prevented from overrunning or escaping and overturning when colliding with the guardrail.

Description

Guardrail structure with enhanced fall prevention and shock absorption performance {GUARD RAIL STRUCTURE WITH OVERTURNING PREVENTION AND SHOCK ABSORBING CAPACITY}

The present invention relates to a guardrail structure with enhanced fall prevention and shock absorption performance, and more specifically, to a guardrail structure with enhanced fall prevention and shock absorption performance, which prevents a vehicle from overturning by improving a connecting member connecting a guardrail supporter and a guardrail, and at the same time, has enhanced shock absorption performance during a collision.

A guardrail structure is a structure that is installed along a roadway on the side or center of a roadway to prevent vehicles from escaping, thereby preventing physical and human damage.

A typical guardrail structure consists of a guardrail that directly collides with a colliding vehicle and absorbs the impact energy of the vehicle, a guardrail support that is fixed to the ground while secondarily absorbing the impact energy transmitted to the guardrail, and a connecting member that connects and fixes the guardrail to the guardrail support.

The connection member according to the prior art performs only a role of simply connecting and fixing the guardrail and the guardrail support, so there is a problem in that it does not efficiently absorb impact energy.

Therefore, when a vehicle collides, the guardrail or guardrail support is rapidly damaged, or the vehicle colliding with the guardrail is thrown out by the reaction force and collides with another vehicle to cause an additional accident, or the guardrail is overturned or escaped. There is a problem of causing great damage by overturning. In recent years, the number of large vehicles has increased and the center of gravity of large vehicles has increased, thereby increasing the risk of overturning in an accident.

In order to solve this problem, according to Korean Patent Laid-open Publication No. 10-2004-0057170, a technique having a block-out unit on the lower side of the connection member is disclosed. This blockout part can partially improve the problem of the vehicle overrunning or overturning when colliding with the guardrail.

However, it is difficult to solve the problem of the vehicle being thrown out by the reaction force and the rapid bending and breakage of the connecting member due to insufficient shock absorption performance of the connecting member having the blockout portion.

Republic of Korea Patent Publication Publication No. 10-2004-0057170

The present invention has been made to solve the above problems, and an object of the present invention is to provide a guardrail structure with enhanced anti-falling and shock absorbing performance, which is prevented from overturning or breaking away when a vehicle collides with a guardrail by providing a blockout portion on the lower side of the connecting member.

In addition, another object of the present invention is to make the connecting member a curved plate bent in a wave form, so that when a vehicle collides with a guardrail, it deforms well like an accordion in the direction in which an impact force is applied, so that a large stress does not occur in the connecting member itself, and damage to the connecting member itself or damage to the joint between the connecting member and other members is prevented, and the shock absorbing performance is excellent, so that the guardrail or guardrail support is rapidly damaged, or the vehicle colliding with the guardrail is bounced by the reaction force It is to provide a guardrail structure with improved fall prevention and shock absorption performance, such as causing additional accidents by colliding with other vehicles while coming out.

A guardrail structure having enhanced fall prevention and shock absorption performance according to an example of the present invention includes a first member coupled to the front of a guardrail support; a second member vertically coupled to the front of the first member; A third member coupled vertically to the front of the second member and coupled to the rear of the guardrail at the same time, and the front lower side of the second member has a blockout portion partially cut and removed, so that the vehicle can be prevented from overrunning or escaping and overturning when colliding with the guardrail. Hereinafter, the front refers to the front direction when looking at the guardrail side (road side) from the guardrail support.

The second member may include a first flat plate formed at a portion in contact with the first member, a second flat plate formed at a portion in contact with the third member, and a curved plate bent in a wave form between the first and second plates.

The curved plate may be characterized in that the radius of curvature of both ends of the corrugation is greater than that of the central corrugation.

The guardrail is formed with a plurality of waves in the vertical direction, and the lower end of the third member is located at the valley of the guardrail, so that the lower end of the third member is the second member and the guardrail. It can be characterized in that it is spaced apart from both.

The front of the guardrail support may be characterized in that it is in close contact with the first member as a whole.

The lower end of the third member may be rearward and bent upward so that the end thereof is located in the blockout part.

A buffer member may be coupled to a lower portion of the third member and positioned in the block-out portion.

The buffer member may be characterized in that the upper end and the lower end are coupled to the third member and have an arc shape convex backward. Also, the number may be two or more. Two or more arcs may decrease in size as they go upward.

The buffer member may be a rubber member. The number of rubber members may be two or more. Two or more rubber members may have a smaller size toward the upper side.

The block-out portion may have a triangular shape with a wide lower side or a convex shape toward the lower front side.

A reinforcing plate coupled to a lower side of the second member may be further included, and the reinforcing plate may extend from the first member to the blockout part.

According to the present invention, by providing the block-out portion on the lower side of the connection member, it is possible to prevent the vehicle from being overturned or detached and overturned when the vehicle collides with the guardrail.

In addition, by making the connecting member a curved plate curved in a wave form, when the vehicle collides with the guardrail, it deforms well like an accordion in the direction in which the impact force is applied, so that large stress does not occur in the connecting member itself, and damage to the connecting member itself or damage to the joint between the connecting member and other members is prevented, and the shock absorbing performance is excellent, so the guardrail or guardrail support is rapidly damaged, or the vehicle colliding with the guardrail is thrown out by the reaction force and collides with another vehicle As a result, problems such as causing additional accidents can be improved.

1A is a plan view of a guardrail structure having enhanced fall prevention and shock absorption performance according to an example of the present invention;
1B is a front view of a guardrail structure having enhanced fall prevention and shock absorption performance according to an example of the present invention;
1c is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to an example of the present invention;
Figure 2a is a plan view, a front view, a side view of a connection member of a guardrail structure with enhanced fall prevention and shock absorption performance according to an example of the present invention;
Figure 2b is a comparison of the operating state of the connection member of the guardrail structure with enhanced fall prevention and shock absorption performance according to an example of the present invention and the conventional connection member;
3a is a side view of a guardrail structure having enhanced fall prevention and shock absorption performance according to another example of the present invention;
Figure 3b is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention;
Figure 3c is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention;
3D is a side view of a guardrail structure having enhanced fall prevention and shock absorption performance according to another example of the present invention;
Figure 3e is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention;
Figure 3f is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention;
Figure 3g is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, the same components are to have the same numerals as much as possible, even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function hinders understanding of the embodiment of the present invention, the detailed description will be omitted.

Also, terms such as first, second, A, B, (a), and (b) may be used to describe components of an embodiment of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected”, “coupled” or “connected” to another element, the element may be directly connected or connected to the other element, but another element may be “connected”, “coupled” or “connected” between each element.

Referring to the drawings, a guardrail structure with enhanced fall prevention and shock absorption performance according to an example of the present invention will be described.

1A is a plan view of a guardrail structure with enhanced fall prevention and shock absorption performance according to an example of the present invention, FIG. 1B is a front view of a guardrail structure with enhanced fall prevention and shock absorption performance according to an example of the present invention, FIG. 1C is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to an example of the present invention, and FIG. Figure 2b is a plan view, front view, side view of the connecting member of the structure, Figure 2b is a comparison of the operating state of the connecting member of the guardrail structure with enhanced fall prevention and shock absorption performance according to an example of the present invention and the conventional connecting member, Figure 3a is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention, Figure 3b is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention Figure 3c is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention, Figure 3d is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention, Figure 3e is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention, Figure 3f is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention FIG. 3g is a side view of a guardrail structure with enhanced fall prevention and shock absorption performance according to another example of the present invention.

1 and 2, a guardrail structure having enhanced fall prevention and shock absorption performance according to an example of the present invention includes a first member coupled to the front of a guardrail support; a second member vertically coupled to the front of the first member; A third member coupled vertically to the front of the second member and coupled to the rear of the guardrail at the same time, and the front lower side of the second member has a blockout portion partially cut and removed, so that the vehicle can be prevented from overrunning or escaping and overturning when colliding with the guardrail.

The guardrail support may be installed by striking and inserting into the ground, or it may be fixed by forming a concrete foundation and burying it in the concrete foundation. The cross section of the guardrail post can be formed in a circular, rectangular, I-shaped, etc. The guardrail support may be formed in a circular shape with an empty interior or a rectangular shape with an empty interior. In the case of the hollow circular shape or the hollow rectangular shape, a portion may be cut and removed in the vertical direction or a portion for coupling with the first member may be partially cut and removed.

The connecting member connecting the guardrail and the guardrail support may include a first member, a second member, and a third member.

The first member may be coupled to the front of the guardrail holding by bolts or welding. The first member may be formed in a flat or arc shape to match the front shape of the holding. The first member may have a bolt hole formed in advance for bolt fastening.

The third member may be installed behind the guardrail and coupled with the guardrail by bolts or welding. The third member may be formed in a planar shape or an arc shape having a large radius. The third member may have a bolt hole formed in advance for bolt fastening.

The second member may be coupled to the front of the first member by welding or the like, and may be coupled to the rear of the third member by welding or the like. In addition, the first member, the second member and the third member may be integrally manufactured.

The second member may include a first flat plate formed at a portion in contact with the first member, a second flat plate formed at a portion in contact with the third member, and a curved plate bent in a wave form between the first and second plates. One or more waveforms of the flexure plate may be formed. When a vehicle collides with a guardrail, the bending plate deforms well like an accordion in the direction of the impact force in addition to supporting the guardrail when a vehicle collides with it, so that a large stress does not occur in the connecting member itself, and damage to the connecting member itself or damage to the joint between the connecting member and other members is prevented. Problems such as causing accidents can be improved.

That is, in the present embodiment, when a vehicle collides, the connecting member can absorb the impact of the vehicle while being deformed like an accordion in the direction in which the impact force acts (transformation in which the bent portion is folded or unfolded depending on its position). This increases the shock absorbing performance by resisting the impact energy of the vehicle together with the resistance of the guardrail and the shock absorbing power of the connecting member, and also reduces the problem of being damaged by being sharply bent at one point (eg, the connection point of the first member and the second member, or the connection point of the second member and the third member). Sudden damage can be prevented.

Referring to FIG. 2B , the drawing on the left is the prior art, and the drawing on the right is the current embodiment. In the case of the prior art, when an impact is applied to the left, it may be rapidly bent and damaged at each connection point or the connection bolt may be damaged. However, in the present embodiment, it is folded or unfolded according to the position of the bent portion and is very flexible. By being deformed in the direction in which the impact is applied, the risk of being sharply bent and damaged at a specific part or the connection bolt being damaged can be significantly reduced.

Referring to FIG. 2A , the radius of curvature of both ends of the corrugated plate may be greater than that of the corrugated central portion of the curved plate. This allows the bending plate to be folded first at the center rather than both ends of the bending plate when a vehicle collides, so that deformation of the bending plate due to a vehicle collision can be ensured first in the bending plate.

Referring to FIG. 1C, the guardrail is formed with a plurality of waves in the vertical direction, and the lower end of the third member is located at the valley of the guardrail, so that the lower end of the third member is the second member. It can be spaced apart from both the guardrail. This allows the lower part of the guardrail to be well bent backwards when the vehicle collides with the guardrail, and also causes the third member to be well bent backwards, so that the vehicle overshoots the guardrail and escapes or overturns after escaping. Can solve the problem well.

Referring to Figure 1a, the front of the guardrail support may be in close contact with the first member as a whole. That is, the guardrail support may be a rectangular cross section, a U-shaped cross section with an open rear end, an I-shaped cross section, or a front surface and a rear part formed in an arc shape, and the first member may be flat. Therefore, both the contact surfaces of the first member and the guard rail support are formed in a plane, closely adhered to each other, and can be joined by welding, bolts, or the like. In addition, when the guardrail support is circular, by making the first member an arc shape, it can be closely adhered to as a whole.

Referring to FIG. 3A , the lower end of the third member is bent backward and upward at the same height as the lower end of the second member, so that an end thereof may be located in the blockout part. This bent portion can solve the problem that the guardrail and the third member are too easily bent and the vehicle penetrates deeply into the lower side of the guardrail and collides with the guardrail support.

Referring to FIGS. 3c, 3d, 3f, and 3g, a buffer member may be coupled to a lower portion of the third member to be positioned in the blockout portion. This buffer member can also solve the problem that the guardrail and the third member are too easily bent and the vehicle penetrates deeply into the lower side of the guardrail and collides with the guardrail support.

The buffer member may be formed in an arc shape, and may have a shape in which an upper end and a lower end are coupled to a third member. In addition, two or more of these arc shapes may be plural. In addition, when there are a plurality of arcs, the lower arc may be formed larger than the upper arc. This can correspond well to this because the lower side of the blockout part is formed wide. The buffer member may be a rubber member. There are also two or more rubber members, and the size may gradually decrease from the lower side to the upper side.

Referring to FIG. 3E , the blockout portion may be formed to be wider at the lower side and narrower toward the upper side. For example, it may have a triangular shape or a convex shape toward the lower front.

Referring to FIG. 3B , a reinforcing plate coupled to a lower side of the second member may be further included, and the reinforcing plate may extend from the first member to the blockout part.

In the above, even though all components constituting the embodiments of the present invention have been described as being combined or operated as one, the present invention is not necessarily limited to these embodiments. That is, within the scope of the object of the present invention, all of the components may be configured or operated by selectively combining one or more. In addition, terms such as "comprise", "comprise" or "having" described above mean that the corresponding component may be present unless otherwise stated, and thus exclude other components. It should be interpreted as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Commonly used terms, such as terms defined in a dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and unless explicitly defined in the present invention, they are not interpreted in an ideal or excessively formal meaning.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: Guardrail post
20: guardrail
32: first member
34: second member
36: third member

Claims (10)

A first member coupled to the front of the guard rail support;
a second member vertically coupled to the front of the first member;
A third member vertically coupled to the front of the second member and coupled to the rear of the guardrail at the same time,
The front lower side of the second member has a partially cut-out blockout portion, so that when a vehicle collides with the guardrail, it is prevented from overturning or breaking away and overturning. The method of claim 1,
The second member includes a first flat plate formed at a portion in contact with the first member, a second flat plate formed at a portion in contact with the third member, and a curved plate bent in a wave shape in left and right between the first and second plates. The method of claim 2,
The curvature plate has a guardrail structure with enhanced fall prevention and shock absorption performance, characterized in that the radius of curvature of the wave at both ends is larger than the radius of curvature of the wave at the center. The method of claim 1,
The guardrail is formed with a plurality of waves in the vertical direction, and the lower end of the third member is located at the valley of the guardrail, so that the lower end of the third member is spaced apart from both the second member and the guardrail. Guardrail structure with enhanced anti-fall and shock absorption performance, characterized in that. The method of claim 1,
The guardrail structure with enhanced fall prevention and shock absorption performance, characterized in that the front of the guardrail support is in close contact with the first member as a whole. The method of claim 1,
The guardrail structure with enhanced fall prevention and shock absorption performance, characterized in that the lower end of the third member is bent upward while being rearward and the end is located in the blockout part. The method of claim 1,
A guardrail structure with enhanced fall prevention and shock absorption performance, characterized in that a buffer member is coupled to the lower portion of the third member and positioned in the blockout portion. in claim 7
The buffer member is a guardrail structure with enhanced fall prevention and shock absorption performance, characterized in that the upper and lower ends are coupled to the third member and have a convex arc shape to the rear. The method of claim 7,
The guardrail structure with enhanced fall prevention and shock absorption performance, characterized in that the buffer member is a rubber member. The method of claim 1,
A guardrail structure with enhanced fall prevention and shock absorption performance, further comprising a reinforcing plate coupled to a lower side of the second member, wherein the reinforcing plate extends from the first member to the blockout part.