KR102503249B1 - Active Rockfall Protection Fence with Damping of Hollow Elastic Body - Google Patents

Abstract

A rockfall protection fence according to the present invention comprises an intermediate post installed between the soil and a road, end posts disposed at both ends with the intermediate post therebetween, a concrete cube buried underground while surrounding the lower ends of the intermediate post and the end posts, a wire rope installed through the intermediate posts, a fixing device coupled to an end of the wire rope and installed through the end post to fix the wire rope to the end post, screw threads formed on an end of the fixing device, a mounting member fastened to the screw threads, and a hollow tube type elastic body located between the mounting member and the end post.

Description

Active Rockfall Protection Fence with Damping of Hollow Elastic Body}

The present invention relates to a fall prevention measure, and more specifically, to a fall fall prevention measure including a hollow tubular elastic body to alleviate an impact applied to a wire rope.

Falling prevention measures are structures that maintain the smooth passage of vehicles by preventing the inflow of falling rocks and soil into the road. It is possible to prevent loss of life and property due to falling rocks through supports, wire ropes, and rhomboid nets arranged in the circumferential direction of the soil. there is.

In the conventional fall prevention measures, when the wire rope located through the pillars is greatly impacted by the falling rocks, problems such as damage to the props and breakage of the ends of the wire ropes have occurred.

Accordingly, a fixing device for fixing the wire rope to the end posts installed at both ends of the supports disposed in the circumferential direction of the tosan is arranged so as to penetrate the end posts, and an elastic member such as a spring is provided at the end of the fixing device. did

When an impact due to a rockfall is applied to the wire rope, the spring is compressed and absorbs the impact to prevent damage to the prop and breakage of the end of the wire rope, but the spring has a high unit cost and a short lifespan.

An object of the present invention is to provide a fall prevention measure capable of preventing damage to the prop due to falling rocks and breakage of the end of the wire rope.

Another object of the present invention is to provide a rockfall prevention method comprising an elastic body for shock mitigation, which is easy to process, has a long lifespan, and has a low cost.

The fall prevention measures according to the object of the present invention described above are installed between the soil and the road, the end posts disposed at both ends with the intermediate posts in between, wrapping the lower ends of the middle posts and the end posts, and buried underground. a concrete cube, a wire rope installed through the intermediate posts, a fixing device coupled to an end of the wire rope and installed through the end post to fix the wire rope to the end post, and an end of the fixing device. It may include a formed screw thread, a mounting member fastened to the screw thread, and a hollow tube type elastic body positioned between the mounting member and the end support.

In addition, the elastic body may include a hollow tubular inner elastic body having a diameter smaller than that of the elastic body and having a diameter concentric with the elastic body inside the elastic body, and at least one connecting member radially connected from an outer circumferential surface of the inner elastic body to an inner circumferential surface of the elastic body. can

In addition, the elastic body may further include an auxiliary elastic plate separating an inner space of the elastic body.

In addition, two or more elastic bodies may be provided.

According to the above-described fall prevention measures, the fall prevention measures including the hollow tube-type elastic body can prevent damage to the support and breakage of the end of the wire rope due to the fall.

According to the above-described rockfall prevention measures, the fallfall prevention measures including the hollow tubular elastic body have advantages of easy installation and low unit cost through the hollow tubular elastic body for shock mitigation.

1 is a plan view of a fall prevention method including a hollow tubular elastic body according to an embodiment of the present invention.
Figure 2 is a side view of the fall prevention measures including a hollow tubular elastic body according to an embodiment of the present invention.
Figure 3 is a plan view of the shock relieving unit located at the end of the wire rope according to an embodiment of the present invention.
4 is an exemplary plan view and perspective view of an elastic body 221 including an internal structure according to an embodiment of the present invention.
Figure 5 is an exemplary perspective view of the coupling sequence of the hollow tubular elastic body according to an embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in specific contents for practicing the invention. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are a plan view and a side view exemplarily showing a fall prevention measure 10 according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, the fallfall prevention measures 10 according to an embodiment of the present invention, when there is soil M on the side of the road R through which the vehicle V passes, the road of falling rocks or soil It is a structure installed to prevent damage to the road (R), traffic obstruction, and loss of life and property due to inflow.

According to one embodiment of the present invention, the fall prevention measures 10 are located between the land mountain (M) and the road (R), and the middle post 110, the end post 120, and the reinforcement fixed to the ground (G) Fixing the support part 100 including the post 121 and the concrete cube 130, the wire rope 200 for preventing falling rocks and soil from entering the road R, and the wire rope 200 to the end post 120 It includes a fixing device 210 for wire rope 200, a shock mitigation unit 220 for alleviating the impact caused by falling rocks and soil, and a lozenge net 300.

The support part 100 is installed in the first direction DR1 and includes at least two intermediate posts 110 that may be disposed on the ground at regular intervals, end posts 120 disposed at both ends of the intermediate posts 110, and It surrounds the lower end of the middle post 110 and the end post 120, and includes a concrete cube 130 that can be buried under the ground (G).

In this specification, the first direction DR1 is defined as a direction perpendicular to the ground G.

According to one embodiment of the present invention, the middle support 110 may be installed in the circumferential direction of the tosan (M).

However, it is only an example that the intermediate post 110 is installed in the circumferential direction of the tosan (M), for example, it can be installed between the road and the slope where falling rocks and soil can flow into the road.

The upper part of the middle post 110 and the end post 120 is bent at an angle between 0 degrees and 90 degrees from the land mountain (M) to the road (R) side, so that falling rocks and soil with a large staying distance move toward the road (R) side. so that it does not infiltrate.

A reinforcing post 121 is disposed between the end post 120 and the middle post 110. Specifically, the reinforcing post 121 is inclined from the top of the end post 120 to the bottom of the intermediate post 110 installed adjacent to the end post 120, and also, the end post 120 and the intermediate post 110 ) It may be configured by mutually coupling the lower part of.

The reinforcing post 121 connects the end post 120 and the middle post 110 integrally with the concrete cube 130, so that the fall prevention measures 10 are directed to the road R even in the event of an impact caused by falling rocks and soil collapse. make sure you don't fall over.

According to one embodiment of the present invention, the middle post 110 includes an H-shaped steel, and the end post 120 and the reinforcing post 121 may be made of a square tube. However, the middle post 110, the end post 120 and the reinforcing post 121 are not limited thereto. For example, the middle post 110, the end post 120 and the reinforcing post 121 may be I-beams and circular steel pipes.

The concrete cube 130 disposed at the lower end of the middle post 110, the end post 120, and the reinforcing post 121 deflects the center of gravity of the fall prevention measure 10 toward the ground (G), so that the fall prevention measures ( 10) to be fixed to the ground (G).

The wire rope 200 is configured to pass through the middle post 110, the end post 120, and the reinforcing post 121, and is arranged at regular intervals in the first direction DR1, and includes at least two can

The wire rope 200 has a shape made by twisting several layers of steel wires, and a wire rope 200 with a larger diameter can be used in places where falling rocks and soil collapse often occur.

However, the type of wire rope 200 is not limited thereto. For example, it may have a steel core and a fiber core, and a coating layer of polyethylene and polyvinyl chloride may be formed on the surface of the wire rope 200.

3 is a plan view of the fixing device 210 and the shock relieving unit 220 located at the end of the wire rope 200.

Referring to Figure 3,

The end of the wire rope 200 includes a fixing device 210 penetrating the end post 120 to connect and fix the wire rope 200 to the end post 120.

One end of the fixing device 210 is connected to the end of the wire rope 200, and the other end is coupled to the end post 120.

Specifically, one end of the fixing device 210 is coupled to the end of the wire rope 200 between the intermediate post 110 and the end post 120.

According to one embodiment of the present invention, the fixing device 210 surrounds the end of the wire rope 200 and is connected. However, the fixing method of the wire rope 200 is not limited thereto. For example, it can be fixed in the form of a socket, a thimble, an eye splice, and a clip.

The fixing device 210 is installed through the end post 120, and the other end protruding to the outside through the end post 120 has a screw thread 211 to fix the fixing device 210 to the end post 120. ) And a mounting member 212 fastened to the screw thread 211 may be provided.

According to one embodiment of the present invention, the mounting member 212 may be composed of a nut.

On the other hand, the shock relieving unit 220 is coupled to the fixing device 210, is located between the end support 120 and the mounting member 212, and relieves the shock received by the wire rope 200 due to the collapse of rocks and sand. can make it

The shock relieving unit 220 includes an elastic body 221 and a washer 222 in a hollow tube shape that can be compressed in the longitudinal direction of the wire rope when a load is applied to the wire rope 200.

When a load is applied to the wire rope 200 due to falling rocks and soil collapse, the wire rope 200 is tensioned in the longitudinal direction, and the elastic body 221 disposed between the end post 120 and the mounting member 212 compression occurs.

The compressed elastic body 221 relieves the impact caused by falling rocks and soil collapse, preventing damage to the middle post 110, end post 120 and reinforcing post 121 and breakage of the end of the wire rope 200. can

In addition, if the falloff prevention measures 10 are installed in an area where falling rocks and soil collapse frequently or greatly occur, the wire rope 200 can be easily broken.

In order to prevent this, two or more elastic bodies 221 may be disposed.

According to an embodiment of the present invention, two or more elastic bodies 221 may be configured in the following arrangement order.

An elastic body 221 having a small diameter or a large thickness and a large modulus of elasticity is placed close to the end post 120, and an elastic body 221 having a large diameter or a small thickness and a small modulus of elasticity is attached to the mounting member 213 can be placed nearby. However, the arrangement order of the elastic body 221 is not limited thereto.

Through this, it is possible to sequentially absorb shocks generated by falling rocks and soil collapse, and each of the elastic bodies 221 can absorb the shocks separately according to the size of the shocks.

According to an embodiment of the present invention, the elastic body 221 may include a metal material. For example, the elastic body 221 may be made of steel. However, the material of the elastic body 221 is not limited thereto. For example, the elastic body 221 may be made of a polymer material.

The washer 222 disposed on the side of the elastic body 221 prevents stress concentration on the contact surface with the mounting member 212 and the end post 120 when a compressive load is applied to the elastic body 221, damage can be prevented.

According to one embodiment of the present invention, the washer 222 may use a thin metal plate such as a plain washer.

However, the embodiment of the washer 222 is not limited to the flat washer, and a square washer and a rubber washer may be used.

According to one embodiment of the present invention, the inside of the elastic body 221 is a hollow form. However, an additional configuration may be added to the inside of the elastic body 221 in consideration of elasticity and durability of the elastic body 221 .

An embodiment related thereto is shown in FIG. 4 .

4 is an exemplary plan view and perspective view of an elastic body 221 including an internal structure.

Specifically, (a), (b) and (c) of FIG. 4 are exemplary plan views of the elastic body 221 including an additional component therein, and FIG. 4 (d), (e) and (f) ) is a perspective view of the elastic body 221 and the protective cap 221_P coupled to the fixing device 210.

Referring to Figure 4 (a),

The inside of the elastic body 221 may include a hollow tubular inner elastic body 221_I having a diameter smaller than that of the elastic body 221 and having a concentricity with the elastic body 221 .

In this specification, when the internal elastic body 221_I is included, the existing elastic body 221 is defined as an external elastic body 221_O.

According to one embodiment of the present invention, the inner elastic body 221_I has a hollow tube shape. However, the shape of the inner elastic body 221_I is not limited thereto. For example, the inner elastic body 221_I may have the shape of an elliptical hollow cylinder.

In addition, a connection member 221_C capable of improving elasticity and durability by combining the inner elastic body 221_I with the outer elastic body 221_O may be further provided.

The connecting member 221_C extends radially from the inner circumferential surface of the outer elastic body 221_O to the outer circumferential surface of the inner elastic body 221_I, and may consist of at least two.

According to an embodiment of the present invention, when there are two or more connecting members 221_C, adjacent connecting members 221_C form an equal angle with each other.

In addition, an auxiliary connection member 221_SC may be further included from the contact point between the inner elastic body 221_I and the connecting member 221_C to the inner circumferential surface of the outer elastic body 221_O.

Each connecting member 221_C is provided with two auxiliary connecting members 221_SC, and the two auxiliary connecting members 221_SC are symmetrical with respect to the connecting member 221_C, and are adjacent to each connecting member 221_C. All between (221_SC) form an equal angle.

According to an embodiment of the present invention, the space between the connection member 221_C and the auxiliary connection member 221_SC and between the auxiliary connection member 221_SC and the auxiliary connection member 221_CS may be filled.

Filling the space between the connecting member 221_C and the auxiliary connecting member 221_SC and between the auxiliary connecting member 221_SC and the auxiliary connecting member 221_CS of the elastic body 221 improves durability and elasticity of the elastic body 221 and , This is to prevent foreign substances from entering the internal structure of the elastic body 221 at the same time.

According to one embodiment of the present invention, rubber, polyurethane foam, etc. may be used to fill the space between the connection member 221_C and the auxiliary connection member 221_SC.

4(b) and 4(c) are plan views of the elastic body 221 including an auxiliary elastic plate 221_S dividing the inside of the elastic body 221.

Referring to Figures 4 (b) and 4 (c), the auxiliary elastic plate (221_S) may divide the inner space by separating the circular cross-section.

According to one embodiment of the present invention, the auxiliary elastic plate (221_S) has a shape of a straight line that can divide the circular cross-section in half and separate the internal space in the form of a semi-cylindrical column. However, the shape of the auxiliary elastic plate 221_S is not limited thereto. For example, the auxiliary elastic plate 221_S may have a waveform shape.

In addition, the auxiliary elastic plate (221_S) may include two or more.

According to an embodiment of the present invention, when the elastic body 221 includes two or more auxiliary elastic plates 221_S, the auxiliary elastic plates 221_S are arched, and the auxiliary elastic plates 221_S are based on the fixing device. It can have a symmetrical shape.

The elastic force of the elastic body 221 can be changed using the auxiliary elastic plate 221_S as described above, and also, it is possible to prevent the elastic body 221 from being unable to exert its elastic force due to deformation such as sinking or twisting. .

Figure 4 (d), (e) and (f) shows a state in which the elastic body 221 is fastened.

The elastic body 221 is provided with two holes 221_H symmetrical about the central point of the elastic body 221 on the side surface to be disposed on the outer circumferential surface of the fixing device 210.

In addition, the elastic body 221 may be provided with a protective cap 221_P on the side of the elastic body 221 to protect foreign substances from entering the elastic body 221 .

The protective cap 221_P may be made of a material such as rubber, plastic, or silicon.

Figure 5 is an exemplary perspective view of the coupling sequence of the elastic body (221).

Referring to Figure 5,

When two or more elastic bodies 221 are disposed between the end posts 120 and the mounting member 212, the size of the end posts 120, the thickness of the wire rope 200, and the fall prevention measures 10 are affected by falling rocks. Elastic bodies 221 having different shapes may be combined in consideration of design factors such as received average impact energy.

According to one embodiment of the present invention, the elastic body 221 including the inner elastic body 221_I from the end support 120 to the mounting member 212, the elastic body 221 including the auxiliary elastic plate 221_S, It may be arranged in the order of the hollow tubular elastic body (221). However, the arrangement order of the elastic body 221 is not limited thereto.

In addition, the mounting member 212 is preferably fastened to the screw thread 211 in a state in which a compressive load is applied to the elastic body 221 so that the elastic body 221 does not wander or slip.

Although described with reference to the above embodiments, those skilled in the art can understand that the present invention can be variously modified and changed without departing from the spirit and scope of the present invention described in the claims below. There will be.

10: fall prevention measures 100: support;
110: middle post 120: end post
130: concrete cube 200: wire rope
210: fixture 211: thread
212: mounting member 220: shock relieving unit
221: elastic body 222: washer
300: rhombus

Claims (4)

Intermediate posts installed between land and roads;
end struts disposed at both ends with the middle strut interposed therebetween;
A concrete cube wrapped around the lower end of the middle post and the end post and buried underground;
a wire rope installed through the intermediate posts;
A fixing device coupled to an end of the wire rope and installed through the end post to fix the wire rope to the end post;
A screw thread formed at an end of the fixing device;
a mounting member fastened to the screw thread; and
a hollow tube-type elastic body positioned between the mounting member and the end support and provided with a hole through which the fixing device passes through a side surface;
including,
The hollow tubular elastic body,
an inner elastic body having a diameter smaller than that of the hollow tubular elastic body and having a concentric core;
at least one connecting member radially connected from the center of the hollow tubular elastic body while forming an equal angle between the inner elastic body and the hollow tubular elastic body; and
Adjacent to the connecting member and including an auxiliary connecting member symmetrical with respect to the connecting member,
On the other hand, the hollow tubular elastic body is configured by filling the space between the connection member and the auxiliary connection member and between the auxiliary connection members,
In addition, a plurality of hollow tubular elastic bodies are provided, and each of the plurality of hollow tubular elastic bodies has a different modulus of elasticity in a radial direction, and the plurality of hollow tubular elastic bodies are arranged such that the elastic modulus gradually decreases in the direction of the mounting member. Rockfall prevention measures.
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