KR101938143B1 - Semi-rigid cable barrier and asymmetrical slip block-out thereof - Google Patents

Abstract

The present invention relates to an asymmetrical block-out used for a ductile or a semi-rigid crash barrier and a crash barrier using the same. The present invention provides the crash barrier, in which a rail includes a front side rail and a rear side rail, a cable comes into fixed contact with a cable connection member, the front side rail has a ′ㄷ′ shape, forms a cable seating space and forms an opened portion on a rear side into which the cable is inserted, and a block-out fixating the rear side rail to a column is included, the block-out includes: a weak wing unit and a strong wing unit containing an energy dispersion member therein to be asymmetric, and the energy dispersion member within the block-out includes: a plate type central board fixated on the rear side rail; a wing connection board connecting the central board to the wing; and a radial resistance board radially formed from the column. The present invention, in realizing the long span crash barrier, is safely and easily constructed and is economically feasible through a concrete structure for integrating the cable with the rail, and also properly supports the load of the long span rail and cable and ensures safety during a car crash through the improved block-out applicable to the long span crash barrier.

Description

[0001] SEMI-RIGID CABLE BARRIER AND ASYMMETRICAL SLIP BLOCK-OUT THEREOF [0002] FIELD OF THE INVENTION [0003]

The present invention relates to a security fence. More particularly, to asymmetric blockouts used in ductile or semi-rigid protective fences. In particular, the present invention relates to a technique applicable to a long-span guard fence having a relatively large spacing between struts.

According to the Ministry of Land, Infrastructure and Transport's "Guidelines for the Establishment and Management of Road Safety Facilities - Safety Protective Equipment for Vehicles" (Apr. 2, 2014), "protected fences" means that vehicles outside the normal driving route during driving are out of the way, And at the same time, to reduce the damage of the occupant and the damage of the vehicle to a minimum, and return the vehicle to the normal traveling direction. In addition, it has a function of guiding the driver's attention and suppressing the crossing of the pedestrian .

The type of protective fence can be divided into two types according to installation location and function: for the side of the road, for the separation, for the sidewalk, and for the bridge. Depending on the strength of the facility, it can be divided into a flexible fence and a rigid fence.

A rigid protective fence is a protective fence that does not primarily deform the return of a vehicle, rather than a shock absorption due to the deformation of the structure during a collision, and is generally called Concrete Safety Shape Barrier (CSSB). Rigid protective fences are used because of limited installation space, ease of maintenance, absolute protection and economical reasons.

On the other hand, the ducted protection fence according to the present invention is superior to the rigid protection fence in terms of stability of the passenger, because it can appropriately dissipate the energy at the time of the vehicle collision using the deformed shape. A soft protective fence is a protective fence whose main function is to absorb impact energy accompanied by some deformation when a vehicle collides. A beam (or cable) consisting mainly of iron and aluminum, and a structure made up of struts, and the bridging fence, which is close to rigidity, may be classified as semi-rigid.

On the other hand, the flexible protection fence has a "beam-type protection fence" and a "cable-type protection fence" or a "guard cable".

The cable-type protective fence is designed to support a given cable with a supporting structure and to resist the tension of the cable against the vehicle collision. The beam-type protection fence is a structure that supports the connected beams to the support, And is resistant to bending and tension. There are various shapes such as the above-mentioned corrugated cross-section, and various hollow tube-shaped beams made of steel or aluminum. When this type is applied to bridges, it is applied in the form of 'semi-rigid (beam type)', 'rigid' or 'mixed type'. The 'guard rail' may be referred to as a 'standard guard rail' in contrast to the 'open guard rail'.

The present invention is applied to a semi-rigid protective fence in which the cable and the rail are combined as described above.

The following figure is a typical block-out presented in the existing patent information.

The present invention provides a configuration that not only copes with the self weight of the long-span semi-rigid protection fence but also protects the occupant in the event of a vehicle collision, unlike the conventional block-out. It also provides a composite structure for securing the cable.

Korean Registered Patent No. 1854761 (May 5, 2014) Korean Patent Publication No. 2016-0013498 (February 4, 2014) Korean Registered Patent No. 1598405 (March 2, 2016)

The present invention intends to show a concrete structure for synthesizing a cable and a rail in realizing a long-span guard fence.

The present invention proposes an improved block-out that can be applied to long-span barriers.

In order to solve the above problems, the present invention provides a security fence including a strut, a rail and a block-out for securing the rail to the strut, the block-out having two wings for fixing the strut to the rail, In the inside of the vehicle, the energy dissipating material is formed only in the direction of the vehicle collision. The wing of one side is weak and the other side containing energy dissipation material is dissipated asymmetrically as a strong wing, So that the vehicle can enter the road again without colliding directly.
The energy dissipation member formed only in the vehicle collision direction of the present invention may include a plate-shaped central plate vertically connecting and fixing the strut and the rear rail, and a blade connecting plate connecting the center plate and the wing .
The energy dissipation member of the present invention may further include a radial resistance plate formed radially from the support, and the wing connection plate in the vehicle collision direction and the radial resistance plate are connected to form a planar lattice.
The present invention also relates to a block-out of a security fence comprising a strut, a rail and a block-out for securing the rail to the strut, the block-out having wings for securing the strut to the rail, The energy source is formed only in the direction of the vehicle collision direction so that one side of the wing is weak and the other side including the energy dissipation material dissipates asymmetrically energy as a strong wing so that the vehicle collides directly with the support So that the user can enter the road again.
The block-out of the present invention may be characterized in that the height thereof is gradually increased from the fixed portion of the rail to the fixed portion of the support to increase the rigidity in the vertical direction.
The protective fence of the present invention further comprises a cable, wherein the protective fence combines the cable and the rail, wherein the rail includes a front rail and a rear rail,
The cable is tightly fixed to the rear rail by a cable connection member. The front rail has a 'C' shape inwardly of a cable holding space, and an opening is formed in the rear of the cable to insert the cable.
In the section where the cable connection member of the present invention is fixed to the rear rail, a rail groove, which is a groove corresponding to the cable connection member, is formed on the front rail so that the front rail is not interfered by the cable connection member .
The cable connecting part is formed in a central portion of the cable connecting member and has a cable built-in portion inside the cable. The cable receiving portion is inserted into the open space of the cable through the opening of the front rail, And the cable is fixed to the rail and the cable is crimped and fixed by the cable connection member and the rear rail.
The front and rear rails of the present invention are fixed by connecting bolts and connecting nuts respectively. The front and rear rails are recessed inward and downward, respectively, so that the connecting bolt or the connecting nut is not exposed from the front surface of the front rail. And a connection fastening part for connecting the connection bolt or the connection nut from the inside thereof is formed.
The apparatus of claim 1, further comprising: a spacing pad for blocking a gap between adjacent rails from above and below, wherein the spacing pad is disposed behind the back rail and secured to the back rail, And the upper and lower portions of the gap holding member are fixed to upper and lower rails respectively and the upper and lower portions are fixed on the upper and lower sides of the cable fixed by the rear rail and the cable connecting member so that the cable is tightly fixed to the rear rail together with the cable connecting member .

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According to the present invention, in implementing a long-span guard fence, it is safe and easy to construct through a specific structure for composing a cable and a rail, and economical efficiency can be secured.

According to the present invention, it is possible to appropriately support the load of the rail and the cable between the long diameter through the improved block-out which can be applied to the long-span protection fence, and to secure the safety in case of a vehicle collision.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual view of each configuration of a semi-rigid cable protective fence according to an embodiment of the present invention; FIG.
FIG. 2 is a conceptual view showing the combined state of the front rail, the rear rail, and the cable according to the embodiment of the present invention.
FIG. 3 is a view conceptually showing a space retaining member according to an embodiment of the present invention.
FIGS. 4 to 8 are conceptual diagrams illustrating construction steps of a semi-rigid cable protective fence according to an embodiment of the present invention. 4 and 5 conceptually show a state before the front rail is coupled and fixed in a semi-rigid cable protective fence according to an embodiment of the present invention. FIG. 4 is an exploded view, Lt; / RTI > shows a combined state.
6 and 7 conceptually show the combination of the front rail and the rear rail of a semi-rigid cable protective fence according to an embodiment of the present invention. FIG. 6 shows a disassembled state, and FIG. FIG.
8 is a rear view of a front rail according to an embodiment of the present invention.
9 is a conceptual diagram illustrating an asymmetric block-out according to an embodiment of the present invention.
10 is a conceptual diagram showing that a block-out, which is an embodiment according to the present invention, acts upon a vehicle collision.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not to be construed as limiting the invention to the precise form disclosed. It is provided to let you know.

The present invention relates to a semi-rigid cable protective fence using a cable with a large tensioning force. The characteristics of the flexible cable can provide good occupant safety for the high impact speed of compact cars. On the other hand, an increase in the tension of the cable can reduce the displacement of the barrier in a collision of a large vehicle. In this specification, the term "front and rear" means the road side of the protective fence and the opposite side of the road. The front side of the protective fence refers to the road side of the protective fence and the reverse side refers to the opposite side. In the same concept, the front of the guard fence means the road side, and the back side means the opposite side of the road.

A semi-rigid cable protective fence according to one embodiment of the present invention includes a strut 10, a symmetric blockout 20, an asymmetric blockout 30, a spacing support 40, a front rail 50, a rear rail 60, A cable connecting member 70, a cable 80, a connecting bolt 90, a connecting nut 91, and the like. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual view of each configuration of a semi-rigid cable protective fence according to an embodiment of the present invention; FIG. FIG. 2 is a conceptual view showing the combined state of the front rail, the rear rail, and the cable according to the embodiment of the present invention. The block-out is an embodiment using a normal symmetric block-out 20 together with an asymmetric block-out 30 reflecting the technical features of the present invention. The asymmetric block-out 30 will be described in detail later.

One of the features of the semi-rigid cable protective fence according to the present invention is that two rails, i.e., the front rail 50 and the rear rail 60 are coupled and fixed to form a rail. The front rail may have the shape of a front surface of a typical wave (waveform) rail. However, the cable accommodation space 51 is formed inwardly in a 'C' shape, and the opening 52 is formed in the rear surface, so that the cable can be inserted.

A cable 80 is closely attached to the front surface of the rear rail. A cable connecting member 70 is closely attached to the rear rail 60 and the cable 80 is fixed between the rear rail 60 and the cable connecting member 70. The cable connector has a constant width in the form of a band. As described above, in the section where the cable connecting member is fixed to the rear rail, a rail groove 53 having a groove corresponding to the cable connecting member 70 is formed on the front rail 50, It is possible to prevent interference (see FIG. 6). The cable connector 70 is also formed with a cable internal portion 71 having a central portion in a shape of a letter C and incorporating a cable inside the cable connector 70. The cable internal portion 71 is connected to the opening of the front rail 50 Is inserted into the cable cradle space (51) through the cable (52) and is compressed to the extent that the cable inside the cradle is compressed.

As a result, the front rail 50 and the rear rail 60 are coupled to each other and the cable 80 is wrapped around the front rail 50 and the rear rail 60. The cable 80 connects the front rail 50 and the rear rail 60, The cable is closely attached to the rear rail 60 by the cable connecting member 70 which is coupled to the front rail 50 and is located in the inner cable holding space 51 of the front rail 50.

Such a configuration not only reduces shielding effect for reducing anxiety of a driver like a general rail protection fence but also prevents a cable from penetrating into a vehicle at the time of a collision and usually prevents damage to a cable.

The upper and lower rails 50 and 60 are fixed to the connecting bolts 90 and the connecting nuts 91, respectively. The front rail 50 is depressed inward and inward to form a connection fastening portion 54 so that bolts or nuts are not exposed from the front surface of the front rail 50. The connection fastening portions 54 of the front rail 50, And the front rail and the rear rail are coupled and fixed to each other by a connecting bolt and a connecting nut through the coupling hole. The coupling hole 55 of the front rail is shown in Fig. 8, and the coupling hole 61 of the corresponding rear rail 60 is shown in Fig.

The cable connection member 70 is also formed on the upper and lower sides of the connection member engagement hole 72 and is fixedly coupled to the rear rail by the connection bolt and the connection nut. The coupling member hole 72 can be seen in FIG.

The front rail of the present invention according to the present invention has a cross section where the connection bolt or the nut is disposed so as not to be exposed to the front surface of the front rail while a space in which the connection bolt or the connection nut can be fastened is separately formed, Structure.

On the other hand, in the case of a long fence with a long span structure to which the technical idea of the present invention is applied, there may be a problem in that the gap between the upper and lower rails may collapse when a vehicle collides. That is, since the interval between the supports for holding both ends of the rail of one section is long because of the long span, the displacement of the interval between the rails due to the vehicle collision can be increased.

Such a gap between the rails, that is, a gap between the cable and the cable, may cause a small car to pass through the guard fence behind the rail or a large car to step on the lower rail. In order to solve such a problem, the present invention adds a spacer holding stand (40). FIG. 3 is a view conceptually showing a space retaining member according to an embodiment of the present invention. The spacing holder 40 is connected and fixed up and down so that the upper and lower rails (including the cable) are kept at a constant interval. The spacing retainer 40 may be in the form of a rod or rod, which is erected perpendicular to the spacing of the up and down rails and whose both ends are fixed respectively to the up and down rails to maintain the up and down spacing. It is necessary to prevent the cable from being deformed in the event of a vehicle collision, and to prevent the gap between adjacent rails from rising up and down according to the deformation of the rail. In the present embodiment, the spacing holder 40 is disposed behind the rear rail 60 and is fixed to the rear rail 60, and is fixed together with the rear rail 60 and the cable connector 70. The upper and lower portions of the gap holding member 40 are fixed to upper and lower rails, respectively, and each of the upper and lower rails is fixed to the upper and lower portions of the cable fixed by the rear rail and the cable connecting member, Tightly. In this case, the spacing holder has four bolt holes (41). Referring to FIG. 6, the state in which the spacing holder 40 is coupled to the rear of the rear rail can be referred to.

In addition, preferably, the cross-section of the gap retaining member is preferably a rod-shaped cross section. This is to prevent the vehicle from colliding with the protective fence while the space maintaining member collides with the vehicle directly in the event of a vehicle collision.

FIGS. 4 to 8 are conceptual diagrams illustrating construction steps of a semi-rigid cable protective fence according to an embodiment of the present invention. 4 and 5 conceptually show a state before a front rail is coupled and fixed in a semi-rigid cable protective fence, which is one embodiment according to the present invention. Fig. 4 is an exploded view, Lt; / RTI > shows a combined state.

The asymmetric block-out 30 is bolted to the already installed support post 10 and then the rear rail 60, the cable 80 and the cable connection 70 are arranged in this order, The cable 80 and the cable connecting member 70 are coupled and fixed to the rear rail 60 by using the cable 90.

Then, the front rail is fixedly coupled to the rear rail (60). 6 and 7 conceptually show the combination of the front rail and the rear rail of a semi-rigid cable protective fence according to an embodiment of the present invention. FIG. 6 shows a disassembled state, and FIG. FIG. As shown in the figure, the front rail 50 and the rear rail 60 are fastened together using bolts.

Meanwhile, as described above, the front rail has a connection fastening portion. The fastening fastening portion prevents the rear rail and the front rail from being floated by the cable connection member at a portion corresponding to the cable connection member, A rail groove 53 having a groove corresponding to the cable connector is formed. When the front rail and the rear rail are tightly coupled and fixed, the cable connecting member 70 is positioned in the rail groove 53. With this structure, interference between the front rail and the cable connecting member can be blocked.

Further, the front rail is continuously engaged and fixed to the rear rail so that the ends of the adjacent both front rails overlap with each other. This is to make one of the front rails cover the other one of the front rails in the moving direction of the vehicle, and the corresponding portion should be prevented from being interfered with each other by forming either one or only one of the connecting portion fastening portions And rail connections "). That is, the end portions of the adjacent front rails are overlapped, but the cross-sectional shape of the front rail is changed so as not to interfere with each other. 8 is a rear view of a front rail according to an embodiment of the present invention.

One of the features of the present invention is a block-out applied to a semi-rigid cable protective fence according to the invention. 9 is a conceptual diagram illustrating an asymmetric block-out according to an embodiment of the present invention. Unlike ordinary guard fences, semi-rigid cable guard fences can be applied to long-span guard fences with a 30-60 m spacing, so the block-out must support the large weight of the cable and rail. Therefore, it is preferable that the wings 30a and 30b of the block-outs are made longer in the vertical direction on the ground to enhance the vertical stiffness. The first feature of the block-out according to the present invention is that the vertical height of the column holding portion 31 is larger than that of the rail fixing portion 32 of the block-out 30. Since the height of the rail fixing portion is limited by the rails but the height of the supporting portion can be increased, the height of the rail fixing portion is gradually increased from the rail fixing portion to the supporting portion to increase the vertical rigidity, .

In this configuration, further consideration is that lateral stiffness increases when the size of the block-out increases, thereby possibly reducing the safety of the passenger in the event of a vehicle collision. Therefore, in order to increase the vertical stiffness, the block-out of the long-span semi-rigid cable-stayed fence is gradually increased in height in the holding direction as described above, and the angles of the two wings of the block- It is necessary to prevent the rigidity of the front portion from acting in the front and rear direction. A second characteristic of the block-out according to the present invention is that the angle formed by the blades of the block-out is larger than usual. In this embodiment, the angle between the two wings is 120 degrees.

However, such block-outs having a large angle are desirable because it is possible to secure the safety of the driver by reducing the rigidity of the front and rear at the time of the departure, but it is still necessary to prevent the vehicle from colliding with the support. To this end, the present invention provides a configuration for asymmetrically adding an energy dissipation material 33 only to the vehicle collision direction among the block-out inner sides. The third characteristic of the block-out according to the present invention is that the angle of both wings is increased (120 degrees as described above in the present embodiment) to reduce the front-to-rear resistance of the block-out at the time of a vehicle collision, Collision side) is arranged to prevent serious collision between the vehicle and the support in case of a vehicle collision.

The energy dissipation member 33 in the blockout is composed of a plate-shaped central plate 34 vertically connecting and fixing the support and the rear rail, and a blade connection plate 35 connecting the center plate 34 and the wing do. The connection plate 35 is connected to the center plate 34 and the vane 30b so that they can be interlocked with each other. In this embodiment, the number of the connection plates 35 is two, and this number can be adjusted as needed. Therefore, the collided vehicle is guided by the weak blade 30a having no connecting plate. In order to further increase the effect, the energy dissipation member 30 may add a radial resistance plate 36 formed radially from the support. In the present embodiment in which both the wing connecting plate and the radial resistance plate are formed, the wing connecting plate and the radial resistance plate form a lattice as viewed from above.

10 is a conceptual diagram showing that a block-out, which is an embodiment according to the present invention, acts upon a vehicle collision. The asymmetric block-out is formed asymmetrically with weak wings (30a) and strong wings (30b), and the strong wings are formed with a wing connecting plate and a radial resistance plate. The wing connecting plate connects the center plate and the strong wing And the radial resistance plate also causes energy dissipation and resistance through the deformation of the impacting vehicle so that the vehicle can enter the road again without colliding directly with the support. In other words, the deformation energy of the energy dissipative material absorbs the collision energy of the vehicle and minimizes the slugging of the vehicle wheel, thereby effectively blocking the occupant.

Although the present invention has been described by way of specific embodiments, the present invention is not limited thereto. It is needless to say that modifications and variations are possible within the scope of the technical idea of the present invention.

10: Holding
20: Symmetric Block Out
30: Asymmetric block-out
30a, 30b: wings
31:
32: rail fixing portion
33: Energy consumables
34: center plate
35: wing connecting plate
36: Radial resistance plate
40:
41: Bolt hole
50: Front rail
51: Cable space
52:
53: Rail groove
54:
60: rear rail
61: coupling ball
70: Cable connector
71: Internal cable
80: Cable
90: Connecting bolt
91: Connecting nut

Claims (10)

A security fence comprising a strut, a rail and a block-out for securing the rail to the strut,
Wherein the block-out has two wings for fixing the strut to the rail, and an energy dissipating material is formed only in the wing of the inside of the rail in the vehicle collision direction,
The wing of one side is a weak wing and the other side including the energy dissipative material on its inner side dissipates asymmetrically energy as a strong wing so that the vehicle can enter the road again without colliding directly with the support
Protected fence.
The method according to claim 1,
Wherein the energy dissipation member formed only in the vehicle collision direction includes a plate-shaped central plate vertically connecting and fixing the strut and the rear rail, and a wing connecting plate connecting the center plate and the wing
Protected fence.
3. The method of claim 2,
Characterized in that said energy dissipative material further comprises a radial resistance plate formed radially from the strut and said wing connecting plate in the vehicle collision direction and said radial resistance plate are connected to form a planar lattice
Protected fence.
A block-out of a guard fence comprising a post, a rail and a block-out for securing the rail to the post,
Wherein the block-out has two wings for fixing the strut to the rail, and an energy dissipating material is formed only in the wing of the inner side in the vehicle collision direction,
The wing of one side is a weak wing and the other side including the energy dissipative material on its inner side dissipates asymmetrically energy as a strong wing so that the vehicle can enter the road again without colliding directly with the support
Block out.
The method according to claim 1,
And the block-out is gradually increased in height from the fixed portion of the rail to the fixed portion of the column to increase the rigidity in the vertical direction
Protected fence.
The method according to claim 1,
Wherein the guard fence further comprises a cable, the guard fence composing the cable and the rail,
The rail includes a front rail and a rear rail,
The cable is tightly fixed to the rear rail by a cable connector,
The front rail has a 'C' shape inwardly of a cable-receiving space, and an opening is formed in a rear surface of the front rail, thereby inserting a cable
Protected fence.
The method according to claim 6,
Wherein the front rail is formed with a rail groove that is a groove corresponding to the cable connection member so that the front rail is not interfered by the cable connection member in a section where the cable connection member is fixed to the rear rail,
Protected fence.
The method according to claim 6,
Wherein the cable connection part is formed with a cable internal part having a cable inside the central part thereof, and the cable internal part is inserted into the open space of the cable through the opening part of the front rail,
And the upper and lower portions of the cable built-in portion are fixed to the rear rail so that the cable is crimped and fixed by the cable connecting member and the rear rail.
Protected fence.
The method according to claim 1,
The front and rear rails are fixed by connecting bolts and connecting nuts, respectively. The front and rear rails are recessed inward and upward so that the connecting bolt or the connecting nut is not exposed from the front surface of the front rail, Or a connection fastening portion for connecting the connecting nut to the inside thereof is formed
Protected fence.
The method according to claim 6,
Further comprising a gap retaining member for preventing the gap between the adjacent rails from spreading upward and downward,
Wherein the spacing holder is disposed behind the rear rail and fixed to the rear rail, the spacing holder being fixed together with the rear rail and the cable connector,
The upper and lower portions of the gap holding member are fixed to upper and lower rails respectively and the upper and lower portions are fixed on the upper and lower sides of the cable fixed by the rear rail and the cable connecting member so that the cable is tightly fixed to the rear rail together with the cable connecting member Featured
Protected fence.

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