KR20170021720A - Vehicle guard fence for bridge - Google Patents

Abstract

A vehicle protection fence for a bridge is disclosed. A vehicle protection fence for a bridge comprises: a strut having an upper groove and a lower groove; an upper transverse beam coupled to the upper groove of the strut; and a lower transverse beam coupled to a lower groove of the strut, wherein the strut is formed in a form of an H-beam in which a width of a web decreases as it goes from a lower part to an upper part, and comprises: an upper transverse beam securing portion having an upper groove and a lower groove to which a portion of the upper transverse beam and the lower transverse beam is accommodated formed at an upper end portion and a lower portion of the strut; and a reinforcing portion formed in a longitudinal direction of the strut on a surface opposing to a surface where the upper transverse beam is secured to, in the lower transverse beam securing portion and the upper transverse beam securing portion.

Description

{Vehicle guard fence for bridge}

The present invention relates to a vehicle security fence for bridges.

Generally, the barrier fence prevents the vehicle departing from the normal driving route during driving to escape to the sidewalk or the opposite lane, and absorbs the collision energy through the plastic deformation during the collision of the vehicle, thereby minimizing the damage to the passenger and the vehicle Means a facility installed on a roadside, a boundary of a sidewalk / roadway, or a median separator in order to reduce a vehicle to a normal traveling direction and to return the vehicle to a normal traveling direction.

Such a protective fence is mainly composed of a flexible protective fence having a main function of absorbing impact energy accompanied by a slight deformation when a vehicle collides with a vehicle, And rigid protective fences formed of non-deformable structures. The flexible protective fence is formed of a structure in which beams are connected to each other and supported by a support. The flexible protective fence is composed of a beam-type protective fence which resists bending and tension against collision of a vehicle, a guard rail a guard rail type guard fence and a cable type guard fence (guard cable) formed of a structure in which a tensioned (prestressed) cable is supported by a support and which resists tension against a vehicle collision.

Here, in the case of a beam-type protective fence, when a vehicle collides with a guard fence, the beam generally collides with the primary, and the beam collides with the ground while the beam is deformed. Thus, the performance of the beam determines the protection performance of the entire protective fence. That is, when the strength of the beam used for the guard fence is too strong, the vehicle can be prevented from departing, but is vulnerable to occupant protection in case of a compact car collision. This is because as the strength of the beam increases, the impact force transmitted to the vehicle increases. On the other hand, when the strength of the beam is too weak, there is a problem that it is difficult to prevent the departure of the large-sized vehicle.

The present invention proposes a vehicle security fence for bridges capable of simultaneously enhancing the strength performance and the occupant protection performance of a guard fence for a bridge to a medium vehicle.

According to an aspect of the invention, a vehicle protection fence for a bridge is disclosed.

A vehicle security fence for a bridge according to an embodiment of the present invention includes a support having an upper groove and a lower groove, an upper support beam coupled to an upper groove of the support, and a lower support beam coupled to a lower groove of the support, And an upper beam and a lower beam which form the upper groove and the lower groove in which a portion of the upper beam and the lower beam are accommodated are formed in an upper portion and a lower portion of the strut, And a reinforcing portion formed in the longitudinal direction of the strut on a surface of the fastening portion, the lower fastening portion and the upper fastening portion, the surface of the fastening portion facing the surface to which the upper cross beam is engaged, And the upper cross bar is larger than the lower cross bar, A second through hole for coupling the lower beam to the support is formed in the lower groove of the support, and a second through hole for coupling the upper beam to the support is formed, And a second bolt guide rail is formed on a part of the lower cross beam. The first bolt is guided along the first bolt guide rail, and then the upper cross beam is guided through the first cross bolt through the first through hole, And the second bolt is guided along the second bolt guide rail and then connects the lower bar via the second through hole to the support in the lower groove, The rails and the second bolt guide rails are arranged so that the amount of the bolt guide rails is adjusted so that the first bolt and the second bolt are not released to the outside Wherein a head of each of the first bolt and the second bolt is inserted into the first bolt guide rail and the second bolt guide rail in such a manner that a washer is tightly coupled to the head of the first bolt and the second bolt, The first bolt and the second bolt are engaged with the pair of the latching jaws so that the head portion and the bolt portion having the threaded portion and the bolt portion and the bolt portion, And the head portion is provided with a bolt support portion for preventing the first bolt and the second bolt from being idle in a state where the first bolt and the second bolt are inserted into the first bolt guide rail and the second bolt guide rail Wherein the rotation preventing cap is fitted to the first bolt guide rail and the second bolt guide rail so that the rotation preventing cap is fitted and fixed to the first bolt and the second bolt, And the through hole is formed to correspond to the thickness, size, and shape of the head portion so that the head portion is fitted and fixed, and the upper horizontal surface portion Wherein the upper horizontal bar and the upper vertical bar are connected to each other with the other upper bar bar being connected to the strut in the upper bar, A third bolt joins the upper transverse portion and the upper sleeve in a state in which the slit portion is arranged and a fourth bolt joins the upper upper beam and the upper sleeve to connect the upper beam and the upper beam, The lower side beam and the lower side sleeves arranged in the other lower side beam Up thereby a fifth bolt is coupled to the lower cross beam and the lower sleeve and, by the sixth bolt is coupled to the other lower cross beam and the bottom sleeve and the lower cross beam connecting the other lower cross beam.

The structure of the protection fence for bridges according to the present invention can simultaneously improve the strength performance and the occupant protection performance of the vehicle protection fence against the middle vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view of a vehicle security fence for a bridge. FIG.
Fig. 2 is a perspective view of a support of a vehicle protection fence for a bridge; Fig.
Fig. 3 is a side view of a support of a vehicle security fence for a bridge. Fig.
Fig. 4 is a front view of a support of a vehicle-protecting fence for a bridge. Fig.
Fig. 5 is a rear view of the support of the vehicle protection fence for bridges. Fig.
6 is a perspective view of a vehicle protection fence for a bridge;
FIG. 7 is a cross-sectional view taken along the line XX 'shown in FIG. 6; FIG.
Figs. 8 and 9 are views showing the structure of a bolt for fastening bolts. Fig.
10 is a view showing an example of the installation of a vehicle-protecting fence for a bridge.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of known related arts will be omitted when it is determined that the gist of the present invention may be unnecessarily obscured. In addition, numerals (e.g., first, second, etc.) used in the description of the present invention are merely an identifier for distinguishing one component from another.

Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate a thorough understanding of the present invention, the same reference numerals are used for the same means regardless of the number of the drawings.

Fig. 3 is a side view of a support of a vehicle-facing fence for a bridge, and Fig. 4 is a side view of a vehicle-protecting fence for a bridge. Fig. 6 is a perspective view of a vehicle-protecting fence for a bridge, Fig. 7 is a cross-sectional view taken along line XX 'shown in Fig. 6, and Figs. 8 and 9 are cross- Fig. 9 is a view showing a structure of a bolt for securing a cross bar, and Fig. 10 is a view showing an example of the installation of a vehicle barriers for a bridge. Hereinafter, with reference to Fig. 1, a description will be given of a vehicle protection fence for a bridge, referring to Figs. 2 to 10. Fig.

First, referring to FIG. 1, a vehicle guard fence for a bridge includes a strut 100, a top beam 200, and a bottom beam 300. For example, a vehicle guard fence for bridges may be formed of a steel castalloy alloy (CAST STEEL ALLOW HAVING HIGH TENSILE STRENGTH). Aluminum alloys used in the past are relatively stable in organic acids but are vulnerable to inorganic acids, so they are eroded by acidic ratios including inorganic acids such as nitric acid and sulfuric acid, and as a result of oxidation over time, There is a problem that it is difficult to maintain a clean appearance due to occurrence of a phenomenon. On the other hand, a strong steel core alloy does not cause bleeding even after a long period of time, and a clean appearance can be maintained. Aluminum alloy has mechanical properties of tensile strength of about 200Mpa, Brinell hardness (HB) of 100 or less and elongation of about 10%, but toughness cast steel alloys have a tensile strength of 450Mpa or more, a hardness (HB) of 150 or more, It shows excellent strength and ductility, has a strong impact and high toughness, and is advantageous for safety enhancement.

1 to 5, the strut 100 has an H beam shape in which the width of the web 130 decreases as it goes from the lower part to the upper part, and the upper part of the strut 100, A reinforcing portion 160, and a base portion 140. As shown in Fig.

The upper beam clamping part 150 is formed at an upper end of the strut 100 and forms an upper groove 170 in which a part of the upper beam 200 is received. For example, the upper beam fastening part 150 may be formed to have a curved surface in which the flange 110 or 120 of the H beam is recessed from the side where the upper beam 200 is coupled. That is, as shown in FIG. 3, the upper groove 170 may have a hemispherical cross-section.

In order to fix the upper beam 200 by using the bolts 240 and the nuts 241, the upper beam clamping part 150 may have a through hole 171 through which the bolt 240 is inserted Is formed.

The lower beam clamping part 190 is formed at a lower portion of the strut 100 and forms a lower groove 180 in which a part of the lower beam 100 is accommodated. For example, the lower beam clamping part 190 may have a curved surface in which the flange 120 of the H beam is recessed from the side where the lower beam 300 is coupled. That is, as shown in FIG. 3, the lower groove 180 may have a hemispherical cross-section.

A through hole 181 through which the bolt 350 passes is formed to fix the lower side beam 300 by using the bolt 350 and the nut 351 in the lower side beam tightening part 190 do.

The upper and lower beam fastening portions 150 and 190 are similar in structure to each other only at the height formed in the strut 100. The upper beam 200 and the lower beam 300 ) Are also similar to each other. However, the installation height or the cross-sectional size of the upper beam 200 and the lower beam 300 may be determined depending on the application.

For example, the upper beam 200 may be used for protection against heavy vehicles, and the lower beam 300 may be installed for protection against passenger cars. In this case, since the upper beam 200 has to withstand a greater weight than the lower beam 300, the upper groove 170, which is the coupling space of the upper beam 200, The upper transverse portion 200 can be realized in a larger size than the lower transverse beam 300. [ However, in this case, since the weight of the pillars 100 supporting the upper beam 200 may be small, the reinforcing portion 160 may be added to the back of the upper beam 200.

The reinforcing portion 160 is formed in the longitudinal direction of the strut 100 on the surface of the upper beam fastening portion 150 facing the surface to which the upper beam 200 is coupled. For example, the reinforcement 160 may exhibit a chicken boll shape as shown in Figs. 1-3. Of course, the reinforcement 160 may have a variety of shapes as long as it supports the upper thread fastener 150 to support the force exerted by the upper thread bar 200.

The base portion 140 is formed in a plate shape at the lower end of the column 100 as a lower portion of the column 100. The base portion 140 is wider than the other portion of the support 100 in order to better withstand the collision force in the event of a vehicle collision.

A plurality of through holes 141 through which the anchor bolts 142 are passed are formed in the base portion 140 so as to fix the support 100 to the concrete curbstone 400 using the anchor bolts 142 and the anchor nuts 143. [ 140, respectively.

On the other hand, in a side view of the strut 100, a groove is formed in a portion corresponding to the web 130. This groove is for minimizing the manufacturing cost of the support 100 and the size of the groove can be determined within a range in which the support 100 supports the upper beam 200 and the lower beam 300.

According to one embodiment, the portion of the web 130 corresponding to the lower groove 180 may be formed to be convex as compared with the other portions. This is to reinforce the force supporting the lower beam 300.

Again, the upper beam 200 and the lower beam 300 will be described with reference to FIG.

The upper beam 200 includes an upper beam body 210 and an upper beam 220 and the lower beam 300 includes a lower beam body 310 and a lower sleeve 320.

The upper side beam body 210 is connected to the upper side beam fastening part 150 located at the upper end of the strut 100 and the lower side beam body 310 is connected to the lower side beam fastening part 190 located at the lower side of the strut 100. [ Lt; / RTI >

In the embodiment shown in the drawings, the upper cross beam fastening part 150 and the lower cross beam fastening part 190 have curved surfaces so that the cross sections of the upper beam 200 and the lower beam 300 all have the shape of an ellipse However, the present invention is not limited thereto. That is, in some embodiments of the present invention, when the upper and lower threaded fasteners 150 and 190 have a curved surface, as in the embodiment shown in the figures herein, The cross section of the cross beam 300 may have various shapes such as circular or circular arc as well as ellipse. The cross section of the upper cross beam 200 and the lower cross beam 300 may also have a triangular, square or other polygonal shape, such as a cross beam having an angled cross section in the vehicle protection fence. In such a case, the upper cross beam fastening part 150 and the lower cross beam fastening part 190 may be designed in a corresponding shape. Hereinafter, as shown in the drawing, it is assumed that the cross-sections of the upper cross beam 200 and the lower cross beam 300 all have elliptical shapes.

The upper cross body 210 and the lower cross body 310 have an elliptical cross section and a curved surface. Thus, the upper and lower bar body 210 and the lower bar body 310 can be coupled to the upper bar-joining portion 150 and the lower bar-joining portion 190, respectively.

6 and 7, the struts 100 are arranged at regular intervals along the road, and the upper and lower beam fastening portions 150 and 190 of the struts 100 One upper cross body 210 and a lower cross body 310 having a predetermined length can be fastened.

As described above, the upper beam fastening part 150, the upper beam body 210, the lower beam fastening part 190, and the lower beam body 310 are formed with the beam fastening bolts 240 and 350 and the nuts 241 and 351 ). ≪ / RTI > To this end, the upper and lower cross body bodies 210 and 310 include bolt guide rails 250 and 360 formed in the longitudinal direction, respectively. The bolt guide rails 250 and 360 are formed such that the heads of the bolts 240 and 350 are inserted into the bolts 240 and 350 in the longitudinal direction of the upper and lower cross body bodies 210 and 310 You can follow along. At this time, the bolt guide rails 250 and 360 have a pair of engagement protrusions 251 and 361 formed along both side surfaces of the bolt guide rails 250 and 360 so that the bolts 240 and 350 are not released to the outside Is also formed along the longitudinal direction of the body. The thread tightening bolts 240 and 350 are guided by the bolt guide rails 250 and 360 so that the thread tightening bolts 240 and 350 connected to the thread brace bodies 210 and 310 are engaged with the thread tightening parts 150 and 150, 190 in the through-holes (171, 181).

8 and 9, the bolts 240 and 350 for fastening bolts and their fastening structures will be described in more detail. However, since the upper and lower bolts for fastening bolts 240 and 350 have the same structure, only the fastening bolts for fastening bolts 240 shown in FIGS. 8 and 9 will be described.

8, the bolt 240 for fastening bolts is fastened between a pair of fastening jaws so as to be supported by the head portion 245, the threaded bolt portion 246 and the pair of fastening protrusions 251, And a bolt support portion 247 formed along the outer circumferential surface of the bolt portion 246 so as to be in close contact with the head portion 245. [

The washer 242 is inserted into the bolt guide rail 250 and the washer 242 is caught by the pair of latching jaws 251. The bolt 246 penetrates through the space defined between the pair of latching jaws 251 and penetrates the through hole 171 of the upper transverse coupling part 150 and projects to the back surface of the support 100. The protruded bolt portion 246 is engaged with the thread tightening nut 241. At this time, the bolt support 247 is supported by the pair of latching jaws 251 and 361, so that the bolt 240 can be fixed so as not to be shaken. Thus, the thread fastening bolt 240 can be accurately inserted into the threaded hole 171 of the upper thread fastening part 150.

9, the head portion 245 of the bolt 240 for fastening bolts is provided with a rotation preventing bolt 240 for preventing the bolt 240 from being loosened when the bolt 240 is inserted into the bolt guide rail 250 The cap 260 can be fitted. The rotation preventing cap 260 may be formed in a shape corresponding to the inner space of the bolt guide rail 250 so as to be fitted and fixed to the bolt guide rail 250. The head portion 245 of the bolt 240 And a through hole 261 to be fitted and fixed is formed. The through hole 261 may be formed corresponding to the thickness, size, and shape of the head 245 so that the head 245 of the bolt 240 is fastened and fixed. For example, the anti-rotation cap 260 may be made of reinforced plastic.

Referring to FIG. 10, the upper sleeve 220 is connected to the upper support body 210 having a predetermined length and is installed at the joint portion of the upper support body 210, and the lower sleeve 340 also has a plurality of And a lower cross body 310 having a predetermined length, which are installed at a joint portion of the lower cross body 310. The upper sleeve 220 and the lower sleeve 340 may be inserted into the upper body 210 and the lower body 310 such that the upper sleeve 220 and the lower sleeve 340 are in close contact with the inner surfaces of the upper body 210 and the lower body, And may have an external shape corresponding to the side surface.

In other words, the upper sleeve 220 and the lower sleeve 340 may have the same cross-sectional shape as the upper and lower crossbar body 210 and 310, respectively. Thus, both ends of the upper sleeve 220 are inserted and coupled to one end of the first upper side beam and one end of the second upper side beam, and one end of the first lower side beam and the lower sleeve 340 are inserted and coupled such that the upper sleeve 220 connects the first upper cross bar and the second upper cross bar and the lower sleeve 340 connects the first lower bar and the second lower bar.

The ends of the upper bar body 210 and the lower bar body 310 and the upper and lower sleeves 220 and 320 are fastened to the bar body 210 and 310 and to the sleeves 220 and 320, And the sleeves 220 and 320 can be fastened with the bolts 230, 330, and 340, respectively.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

100: holding
140: Base portion
150: upper side fastening portion
160:
190:
200:
210: upper crossbar body
220: upper sleeve
300:
310: Lower crossbar body
320: Lower sleeve

Claims (1)

A support having an upper groove and a lower groove;
An upper transverse beam coupled to an upper groove of the strut; And
And a lower cross beam coupled to a lower groove of the column,
[0027]
An H-beam shape in which the width of the web decreases as it goes from the bottom to the top,
An upper cross securing portion and a lower cross securing portion that form the upper grooves and the lower grooves in which the upper cross beam and a portion of the lower cross beam are accommodated, And
And a reinforcing portion formed in the longitudinal direction of the strut on a surface of the upper beam fastening portion opposite to a surface to which the upper beam intersects,
Wherein a size of the upper groove is larger than a size of the lower groove and a size of the upper side beam is larger than a size of the lower side beam and a first through hole for coupling the upper side beam to the column is formed in the upper groove, A second through hole for coupling the lower beam to the support is formed in the lower groove in the strut,
A first bolt guide rail is formed on a part of the upper cross beam, a second bolt guide rail is formed on a part of the lower cross beam, a first bolt is guided along the first bolt guide rail, And the second bolt is guided along the second bolt guide rail, and the lower cross beam is coupled to the support from the lower groove through the second through hole, And,
The first bolt guide rail and the second bolt guide rail include a pair of engagement protrusions formed along both side surfaces of the bolt guide rail so that the first bolt and the second bolt are not released to the outside,
Wherein a washer is inserted into the first bolt guide rail and the second bolt guide rail while the washer is in close contact with the head of the first bolt and the second bolt,
Wherein the first bolt and the second bolt,
Head;
A threaded bolt portion; And
And a bolt support portion coupled to at least one of the head portion and the bolt portion so that the first bolt and the second bolt are not disengaged,
And a rotation preventing cap for preventing the first bolt and the second bolt from being idled in a state where the first bolt and the second bolt are inserted into the first bolt guide rail and the second bolt guide rail are inserted into the head,
The rotation preventing cap may be formed in a shape corresponding to the inner space of the first bolt guide rail and the second bolt guide rail so as to be fitted and fixed to the first bolt and the second bolt, A through hole is formed,
The through-hole is formed to correspond to a thickness, a size, and a shape of the head portion so that the head portion is fitted and fixed,
Wherein the upper horizontal bar is connected to another upper bar bar in a state where the upper horizontal bar is coupled to the strut, and the lower horizontal bar is connected to another lower bar bar in a state of being coupled to the supporting bar in the lower groove,
A third bolt joins the upper transverse portion and the upper sleeve in a state in which the upper slit portion is arranged in the upper transverse beam and the other upper transverse beam and a fourth bolt joins the upper transverse beam and the upper sleeve, And the fifth bolt joins the lower side beam and the lower side sleeve in a state where the lower side beam and the lower side rib are arranged in the other lower side beam and the sixth bolt joins the other lower side beam and the lower side beam, And the lower sleeve is coupled to connect the lower side beam to the other lower side beam.

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