KR20010003621A - Steel guide rail and impact absorber used for the same guide rail - Google Patents

Abstract

PURPOSE: A steel guardrail for roadway and an impact relaxation device installed in the steel guardrail are provided to prevent a secondary accident by enhancing the structural performance, and minimize a deformation of structure and the damage of the guardrail and a vehicle by absorbing the impact in multi-stage during crashing. CONSTITUTION: A steel guardrail for a roadway comprises; numerous props(10) in which more than one installing grooves are depressed; numerous cross beams(20); and a connection rod(30) which connects the rear end of one cross beam(20) to the front end of the other cross beams(20) in the direction of the length. In the cross beams(20), an opened part(21) having an engaging lug(22) is formed, and the engaging lug(22) is projected inward from one side facing the installing groove. The cross beam(20) is installed in the prop(10) in a row or numerous rows by a fixing hook(23) in '£' shape installed in the engaging lug(22) with a fastening member. In an impact relaxation device, an impact relaxing member comprises a hollow member in rectangular section to absorb the impact, which occurs between the cross beam(20) and the prop(10). And then the impact relaxing member is installed with a first bolt member and a second bolt member. The first bolt is fastened in an installation groove, and the second bolt is fastened in the fixing hook.

Description

Steel railing for roadway and shock absorber installed in it {STEEL GUIDE RAIL AND IMPACT ABSORBER USED FOR THE SAME GUIDE RAIL}

The present invention relates to a steel railing that prevents sudden departure of a vehicle driving on a roadway. The present invention relates to a steel railing for a roadway and a shock absorbing device installed therein for minimizing damage and easy to assemble and reinstall.

In general, railing structures are mainly installed on both sides of the road such as bridges or overpasses to limit the running width of vehicles traveling along the roadway and to prevent pedestrians from moving away from the structure. It will play a role in preventing serious human and material damages. In addition, by performing a role of improving the aesthetic beauty of the structures such as bridges and overpasses that are constructed with high technology, it is to perform the role of two seats.

In general, handrail structures are vertical pillars which are installed on both sides of bridges or overpasses directly or at fixed intervals such as concrete curb at regular intervals, and multi-stage forms of 1, 2, and 3 stages depending on the height of construction on the pillars. As the pipe member is installed in the longitudinal direction of the furnace and the connecting pipe member assembled between the pipe member so as to connect the pipe member in the longitudinal direction, the pipe member in the support is installed as a plurality of anchor bolts in the concrete curb It is fixedly installed as a plurality of bolt members, one pipe member and another pipe member is extended to a predetermined length by the connecting pipe member is inserted into the inner diameter and fastened as a bolt member.

However, in such a conventional railing structure, when the vehicle traveling along the roadway suddenly escapes the roadway and collides with the pipe member due to an abrupt situation, the absorbing power of the crash falls, and the pipe made of aluminum material, especially when a large vehicle collides. The member does not sufficiently withstand the impact resistance and falls, and the props also lose the bearing capacity of the impact, so that the crashing vehicle falls out of the railing, resulting in damage to the vehicle as well as an accident on the occupant's body.

In addition, since the material of the handrail structure is made of all aluminum, there is a problem that the cost is increased at the time of post-maintenance due to the severe damage and the maintenance cost is expensive.

Accordingly, the present invention has been made to solve the above problems, the purpose of which is to strengthen the structural function to prevent secondary accidents caused by the fall of the vehicle, to compensate for the deformation of the railing according to the temperature change of the structure It aims to provide a roadway steel railing that can minimize deformation, improve installation productivity by simplifying installation and assembly.

Another object of the present invention is to provide a shock absorbing device that can minimize the damage caused by the handrail structure, the vehicle by absorbing the impact generated during the vehicle crash in multiple stages.

Figure 1 (a) (b) is a perspective view and a side view showing a steel railing for a roadway according to the present invention,

Figure 2 is a front view showing a railing steel railing according to the present invention,

Figure 3 (a) (b) is a perspective view and a side view showing a steel railing for a driveway equipped with a two-stage cross beam equipped with a shock absorbing device according to the present invention,

Figure 4 (a) (b) is a perspective view and a side view showing a steel railing for a road equipped with a three-stage cross beam with a shock absorbing device according to the present invention.

* Explanation of symbols for the main parts of the drawings *

2 ......... Shock-absorbing member 10 ........ Shoring

11 .. Settlement groove 20 ........ Horizontal beam

21 ...... opening 22 ........

23 ..... Fixing ring 24 ........ Protruding Jaw

30 ..... Connecting rod 40 ........ Expansion connecting rod

109 ..... Concrete curb 109a ...... Anchor bolt

The present invention as a technical configuration for achieving the above object,

In the handrail equipment installed on both sides of the roadway,

A plurality of struts recessed in at least one seating groove in the inner surface;

An opening having a locking projection protruding inwardly is formed on one side surface facing the seating groove, and is easily installed at one or multiple stages in the support as a 'c' shaped fixing ring and a fastening member disposed on the locking projection. A plurality of cross beams; And

By connecting the rear end of the cross beam and the end of the other cross beam in the longitudinal direction; by providing a steel railing for the roadway characterized in that it comprises a.

In addition, the present invention as a technical means for achieving the above another object,

In the device for absorbing the impact when the vehicle crashes in the handrail equipment installed on both sides of the roadway,

A first bolt member for fastening a shock-absorbing member made of a hollow member having a rectangular cross section to a lower seating groove of the support so as to absorb a shock generated between the cross beam and the support which is first contacted with the crashed vehicle, By providing a shock absorbing device characterized in that it comprises a shock absorbing member that is installed to be replaced as a second bolt member fastened to a fixing ring disposed on the jaw.

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

As shown in FIGS. 1A and 2B, the steel railing 1 for a roadway according to the present invention has a prevention device installed along a roadway on both the left and right sides of a road or a bridge having a roadway on which a vehicle is driven. As such a structure consists of a strut 10, crossbeam 20 and the connecting rod (30).

That is, the plurality of pillars 10 installed at a predetermined interval as a plurality of anchor bolts 109a in a fixture 109 such as concrete curb provided on both sides of the driveway have one or a plurality of seating grooves 11 on the inner side facing the driveway side. ), And each of the seating recesses 11 is formed with a screw hole 12.

And, the horseshoe-shaped cross beam 20 installed in one or more stages in the horizontal direction with respect to the vertical support 10 is made of a hollow pipe member having a D-shaped cross section, the seating groove ( 11 and a vertical surface that is one side facing each other to form an opening 21 perforated in the longitudinal direction, the opening 21 has a locking jaw 22 protruding into the crossbeam body, the holding ( 10, the 'c' shaped fixing rings 23 inserted through the openings 21 are opened for each of the latching jaws 22 of the cross beams corresponding to the corresponding positions. At this time, as shown in Fig. 1 (b), the projection jaw 24 of the fixing ring 23 and the locking jaw 22 of the opening 21 is arranged in the up and down direction when the vehicle crashes. In order to prevent each end should be assembled so as to overlap each other so that the outer surface of the locking jaw 22 is in contact with the inner surface of the protruding jaw 24 to face each other.

In this state, when the plurality of screw holes 27 formed in the fixing ring 23 and the screw holes 12 of the support 10 coincide with each other, a fastening member (into the screw holes 12 and 27) By inserting 25) and then tightening the nut member 26 at its end, the cross beam 20 can be installed long in the longitudinal direction with respect to the vertical strut 10.

In addition, the connecting table 30 connecting the plurality of horizontal beams 20 in a straight line in the longitudinal direction is made of a hollow pipe member having the same D-shaped cross section as the horizontal beams 20, A plurality of bolt holes 31 and 32 for fastening the fastening member 35 in accordance with the screw holes 29 of the left and right horizontal beams 20 to be connected are drilled in a plurality of upper surfaces. Here, a part of the bolt holes 31 and 32 is a fastening member 35 by easily matching the screw hole 29 and one side bolt hole 32 of one side cross beam 20 when assembling with the cross beam 20. It is good to form through hole in the form of hole so that it can be fastened easily.

Here, the assembly position of the connecting table 30 for connecting the cross beam 20 in the longitudinal direction may be arranged to coincide with each other in the longitudinal direction when the cross beam 20 is installed in multiple stages on the support 10, You may arrange them so that they may not cross.

Then, at a point where the expansion joint 108 provided to the curbstone 109 is secured, a certain interval of about 50 mm is secured between the cross beams 20 continuously installed with the cross beams 20 continuously. In order to properly compensate for the length deformation of the handrail structure according to the temperature change in the state, an expansion connecting rod 40 is simply inserted into the inner diameter of the cross beam 20 and another cross beam 20 without being fastened. In this case, when the stretching and contraction of the railing structure according to the temperature change, the horizontal beam 20 on both sides of the left and right sides are collapsed or opened without structural deformation of the entire railing structure with the expansion connecting portion 40 interposed therebetween. Structural safety of structures can be secured at all times regardless of climate change.

3 (a) and 3 (b) are a perspective view and a side view showing a steel railing for a roadway provided with two levels of horizontal beams provided with an impact mitigating device according to the present invention, as shown in FIG. The shock absorbing device (1a) for absorbing the impact generated during the collision to suppress the damage of the handrail structure is the lowest cross-beam (20a) and the strut (10) that the bumper (not seen) of the detached vehicle hits first As installed therebetween, the impact mitigating member (2) is made of a hollow rectangular pipe material having a rectangular cross-section, the lowest seating groove of the support (10) is installed long at a predetermined distance in the longitudinal direction on both sides of the roadway A plurality of threaded holes 4 are formed through one side 2a so as to be fixedly installed as the first fastening member 3 at 11a, and the locking jaw of the cross beam 20a is formed at the other side 2b. Fixing ring 23a and second fastening member disposed in 22a) As (4), a plurality of other threaded holes 5 are formed so as to be fixedly installed. Accordingly, the first fastening member 3 is inserted into the screw hole 12a of the strut coinciding with the screw hole 4 of the impact mitigating member 2, and another screw hole of the impact mitigating member 2. By fastening the second fastening member 4 inserted into the screw hole 27a of the fixing ring 23a, which coincides with (5), respectively, the impact having a shock-absorbing space between the support 10 and the cross beam 20a. The relief member 2 can be installed. 3 (a) and (b), the upper cross beam 20 is installed in the same manner as above, and the connecting rod 30 and the expansion connecting rod 40 have the same structure such that the horizontal beams 20 and 20a extend in the longitudinal direction. Is installed.

The shock absorbing member 2 may be provided in a trapezoidal shape in which one side 2a matches the width of the seating groove 11a and the width of the other side 2b is larger than the one side 2a. .

Figure 4 (a) (b) is a perspective view and a side view showing the roadway iron railings according to the present invention, as shown, the top and middle cross beams 20, 20b is the top end of the vertical strut 10 And are respectively installed as fixing rings 23 and 23b in the intermediate seating grooves 11 and 11b, and are generated when the vehicle collides between the lowermost crossbeam 20a and the lowermost seating recess 11a of the support 10. As described above, the shock absorbing member 2 is installed to absorb the shock, and thus the description thereof will be omitted as the connecting table 30 and the expansion connecting table 40 are installed in the same structure as described above.

When the vehicle traveling on the road with the roadway steel railing 1 having the above configuration is separated and the vehicle having the inertia force collides with the cross beams 20, 20a and 20b, the cross beams 20 and 20a. Since 20b is made of a hollow pipe material having a buffer space, the primary shock is absorbed.

In addition, when the cross beams 20, 20a and 20b are installed in multiple stages, shocks may be absorbed between the cross beams 20a and the support 10 of the lowest end, which are first contacted with the bumper, which is the protrusion of the colliding vehicle. Since the shock absorbing member 2 made of a hollow pipe material having a cushioning space is installed, it absorbs secondary shock and can absorb and distribute the impact energy transmitted to the crashed vehicle in multiple stages. This minimizes the damage of the vehicle to promote the safety of the occupants, as well as to minimize the damage and deformation of the railing structure, the vehicle. In this case, the same effect and effect can be obtained even when the impact mitigating member 2 is employed in the steel handrail 1 of the present invention having the cross beam 20 of one stage.

In addition to the vertical beam (10) (b) and 4 (a) (b), as shown in Figure 3 (a) (b), the support (10) together with the anchor bolt (109a) for fixing the support (10) Reinforcement ribs 19 are integrally formed at the bottom of the support 10 so as to improve the structural performance of the support, and the locking jaws 22 and 22b and the fixing ring 23 of the cross beams 20 and 20b are installed. Protruding jaw 24 (24b) of the (23b) is superimposed so that there is no up and down flow, it is difficult to detach outside the mounting grooves (11, 11b) in which the horizontal beam (20, 20b) is formed recessed in the support (10) Since it is fitted so that the assembly state of the handrail structure can be safely maintained without shaking during the collision of the vehicle, and the cross beam 20, 20b or a plurality of fastening members are prevented from falling off, a second accident in which the vehicle is separated from the handrail structure after a collision It can be prevented.

In addition, only the cross beams 20, 20a and 20b and the shock-absorbing member 2 have a degree of damage in the collision process, and if only a damaged part is replaced in the future repair, a circular recovery is possible. The maintenance cost can be reduced.

In addition, the iron railings 1 for the driveway according to the present invention have a silver color when the entire structure is hot-dip galvanized, so that the aesthetics are beautiful. Can be extended in the same manner as And, if the top of the cross beam 20 is painted in various colors can be pursued aesthetic beauty.

In addition, since the steel railing structure is composed of a low-cost steel, rather than a high aluminum material, the construction cost is lower than the conventional cost.

As described above, the present invention has been illustrated and described in connection with specific preferred embodiments, but the present invention is not limited thereto, and the present invention is not limited to the scope of the present invention provided in the following claims. Those skilled in the art will readily appreciate that various modifications and variations are possible.

According to the present invention having the configuration as described above, the impact generated during the collision of the vehicle that is driving can be absorbed in multiple stages as the cross beams 20, 20a, 20b and the impact mitigating member 2 made of a hollow pipe material. This minimizes the deformation and damage of railing structures and vehicles, promotes the safety of the occupants, suppresses the sway of cross beams in the event of collision, and prevents the falling of each fastening member. In addition to preventing secondary accidents, the degree of breakage of the handrail structure itself is slight, resulting in a significant reduction in maintenance costs.

Claims (7)

In the handrail equipment installed on both sides of the roadway, A plurality of struts 10 recessed in at least one seating groove 11 on an inner side thereof; An opening 21 having a locking jaw 22 protruding inwardly is formed on one side surface facing the seating groove 11, and the 'c' shaped fixing ring 23 is disposed on the locking jaw 22. And a plurality of cross beams 20 that are easily installed in one or multiple stages on the support 10 as fastening members 25; And A railing for a roadway comprising a; connecting rod 30 connecting the rear end of the cross beam 20 and the front end of another cross beam 20 in a longitudinal direction. According to claim 1, Protruding jaw 24 of the fixing ring 23 and the engaging jaw 22 of the opening 21 is opposed to each other in order to prevent movement in the vertical direction when the vehicle collision Driveway iron railings, characterized in that each end is assembled to overlap each other so that the outer surface of the locking step 22 in contact with the inner surface of the (24). According to claim 1, The support 10 is provided with a reinforcing rib 19 is integrally formed with the lower end of the support 10 to improve the structural performance of the support 10, along with the anchor bolt (109a). Driveway iron railings characterized in that. According to claim 1, Some of the bolt holes 31, 32 of the connecting table 30, the screw hole 29 and one side bolt hole 32 of one side cross beam 20 when assembling with the left and right side cross beam 20 The railing for a roadway characterized in that the bolt hole 32 is formed in the form of a long hole so that the fastening member 35 can be easily matched with each other easily. The expansion joint 108 of claim 1, wherein the expansion joint 108 is provided to the curb 109 in a state in which a predetermined interval P of about 50 mm is secured between the cross beams 20 and another cross beams 20 continuously installed. To install the expansion connector 40 that is simply inserted into the inner diameter of the cross beam 20 and another cross beam 20 to be properly compensated for the length deformation of the railing structure according to the temperature change Driveway steel railings characterized in that. In the device for absorbing the impact when the vehicle crashes in the handrail equipment installed on both sides of the roadway, In order to absorb the impact generated between the cross beam 20a and the support 10 which are first contacted with the crashing vehicle, a shock-absorbing member 2 made of a hollow member having a rectangular cross section has a lower seating groove of the support 2. The first bolt member 3 fastened to 11a) and the second bolt member 4 fastened to the fixing ring 23a disposed on the locking jaw 22a of the horizontal beam 20a are installed to be replaced. Shock absorbing device, characterized in that it comprises a relief member (2). The trapezoid of claim 6, wherein the impact mitigating member (2) has one side (2a) coinciding with the width of the seating groove (11a), and the width of the other side (2b) is larger than the one side (2a). Shock-absorbing device characterized in that the form.