CN115404806A - A highway traffic safety facility device and its optimal setting method - Google Patents

Abstract

The application relates to a highway traffic safety facility device and an optimal setting method thereof, belonging to the technical field of highway safety. The safety facility device includes several guardrail units connected in sequence, and the guardrail unit includes a rigid guardrail and two uprights, and the two ends of the rigid guardrail are respectively fixedly connected to the sides of the two uprights; between the two uprights A buffer assembly is provided, and the buffer assembly is located on the side of the rigid guardrail facing the road. The safety facility device formed by the connection between the column and the rigid guardrail in the present application has high firmness; the deformation equivalent of the impact can be appropriately adjusted through the buffer device, which can reduce the damage to the vehicle and also reduce the impact on the rigid guardrail. Damage, thereby effectively increasing the anti-collision performance of safety facilities.

Description

A highway traffic safety facility device and its optimal setting method

technical field

The present application relates to the technical field of expressway safety, in particular to an expressway traffic safety facility device and an optimal setting method thereof.

Background technique

Traffic safety facilities are an important part of expressways, which play an important role in giving full play to the functions of expressways and ensuring driving safety. At present, there are still many deficiencies in the application of expressway safety facilities. For example, the purpose of the guardrail is to prevent out-of-control vehicles from crossing the expressway, and it has the function of preventing the vehicle from breaking through, passing under, or over the expressway. The guardrail is an important part of the highway. The guardrail can not only increase the beauty and brilliance of the highway, but also play a very good role in warning, blocking and preventing traffic accidents.

According to the anti-collision performance, guardrails can be divided into flexible road guardrails, semi-rigid road guardrails and rigid road guardrails. The main form of flexible road guardrails is cable guardrails. It mainly relies on the tensile stress of the cable to resist the collision of the vehicle, absorb the collision energy, and has a large buffer capacity. The semi-rigid highway guardrail is a kind of corrugated steel guardrail that is spliced with each other It is a continuous structure composed of pillars, which uses the deformation of soil foundation, pillars and wave beams to absorb collision energy and force out-of-control vehicles to change direction. It has certain rigidity and flexibility; rigid highway guardrail is a concrete block with a certain shape An interconnected structure that absorbs collision energy by climbing up and turning after an out-of-control vehicle collides.

Regarding the above-mentioned related technologies, the inventor believes that there are the following defects: the guardrail has small deformation, poor energy consumption, and is easy to cause certain damage to vehicles and personnel.

Contents of the invention

In order to effectively increase the anti-collision performance of the safety facility device, the present application provides a highway traffic safety facility device and an optimal setting method thereof.

The above-mentioned purpose of the application one is achieved through the following technical solutions:

A highway traffic safety facility device, comprising several guardrail units connected in sequence, the guardrail unit comprising a rigid guardrail and two uprights, the two ends of the rigid guardrail are respectively fixedly connected to the sides of the two uprights; A buffer assembly is arranged between the columns, and the buffer assembly is located on the side of the rigid guardrail facing the road.

By adopting the above technical scheme, the safety facility device formed by the connection of the column and the rigid guardrail has high firmness; and the buffer device can properly adjust the deformation equivalent of the impact, which can reduce the damage to the vehicle and reduce the impact on the rigidity. The damage caused by the collision of the guardrail can effectively increase the anti-collision performance of the safety device.

Preferably, the buffer assembly includes a cable and a moving block, and a moving cavity along the length direction of the cable is provided in the column for the moving block to move; the side of the column is provided with a cavity for the end of the cable to pass through The through hole communicates with the moving cavity, and the two ends of the cable are respectively fixedly connected to the moving blocks in the two adjacent columns.

By adopting the above technical solution, when the vehicle hits the cable, the deformation of the cable will adjust its tension force, so that the moving blocks at both ends of the cable will move closer to each other, so as to adjust the length of the cable between the two columns. That is, by adjusting the tension and length of the cable, the stress state of the safety device can be adjusted, so that the safety device can properly adjust the deformation equivalent of the impact under the condition of high bearing capacity.

Preferably, several first return springs are arranged in the moving chamber, one end of the first returning spring is fixed to the wall of the moving chamber, and the other end is fixed to the side of the moving block facing the cable.

By adopting the above technical solution, the first return spring can restore the moving block to the initial position; and when the cable is hit, the tension force of the cable can be buffered by the first return spring.

Preferably, the surface of the moving block is fixedly connected with a plurality of parallel semicircular raised lines, and the length direction of the raised lines is arranged along the moving direction of the moving block.

By adopting the above technical solution, the semicircular convex line can reduce the contact area between the moving block and the wall of the moving cavity, thus making it easier for the moving block to move in the moving cavity, so as to better adjust the tension and tension of the cable. length.

Preferably, an arched guardrail is fixedly connected between the two columns, the bending direction of the arched guardrail is towards the rigid guardrail, and the arched guardrail is located between the rigid guardrail and the buffer assembly; A plurality of support rods are fixedly connected between the arched guardrail and the rigid guardrail.

By adopting the above technical scheme, the arched guardrail, the rigid guardrail and the supporting rod cooperate to enhance the overall structural strength of the safety device; at the same time, the arched guardrail can limit the deformation of the cable, thereby reducing the damage of the cable situation, further increasing the anti-collision performance of the safety device.

Preferably, the buffer assembly includes a plurality of buffer rods parallel to each other, buffer grooves are provided on the side of the column, sliding blocks are fixedly connected to both ends of the buffer rods, and the buffer grooves and the sliding blocks Sliding fit; a second return spring is arranged in the buffer groove, one end of the second return spring is fixed on the groove wall of the buffer groove, the other end is fixed on the sliding block, and the second return spring The return spring is located between the rigid guardrail and the sliding block.

By adopting the above-mentioned technical solution, the buffer groove and the sliding block cooperate to allow the buffer bar to move toward or away from the rigid guardrail; when the vehicle hits the buffer bar, the buffer bar will move toward the rigid guardrail, and then Part of the impact force is dispersed by the second return spring to adjust the stress state of the safety facility device, so that the safety facility device can properly adjust the deformation equivalent of the impact under the condition of high bearing capacity.

Preferably, the rigid guardrail includes a plurality of cross bars parallel to each other, a plurality of support rollers are arranged between two of the cross bars, and the side surfaces of the support rollers abut against the side surfaces of the buffer bars; There is an adjustment groove on the rod, and an adjustment block that slides and fits with the adjustment groove is fixedly connected to the rotating shaft of the support roller; several third return springs are arranged in the adjustment groove, and one end of the third return spring is fixed On the groove wall of the adjusting groove, the other end is fixed on the adjusting block; the moving direction of the adjusting block is the same as that of the sliding block.

By adopting the above-mentioned technical solution, the adjustment block is matched with the adjustment groove, so that the support roller can move toward or away from the buffer rod on the cross bar; Dispersion is carried out to further adjust the stress state of the safety facility device, thereby reducing the damage of the buffer rod and further increasing the anti-collision performance of the safety facility device.

Preferably, a plurality of reinforcing rods are fixedly connected between two adjacent buffer rods, the buffer rods are arc-shaped rods bent toward the cross bar, and the radius of the support roller close to the column is larger than that of the support roller far away from the column. The radius of the support roller.

By adopting the above technical scheme, the combination of the reinforcement rod and the buffer rod can enhance the structural strength of the buffer assembly; the buffer rod is an arc rod, and support rollers with different radii can reduce the damage of the buffer rod and further increase safety. Anti-collision performance of facilities and devices.

The above-mentioned purpose two of the application is achieved through the following technical solutions:

A method for optimal setting of highway traffic safety facilities, comprising the following steps:

Obtain the key road sections of the expressway, the key road sections include the long slope downhill road section, the tunnel entrance road section and the bridge road section;

A highway traffic safety facility device as described above is installed at the road edge of the key road section.

By adopting the above-mentioned technical solution, installing the safety facility device on key road sections can reduce the damage to the vehicle, thereby effectively increasing the anti-collision performance of the safety facility device.

In summary, the beneficial technical effects of the present application are:

1. The safety facility device formed by the connection between the column and the rigid guardrail has high firmness; and the buffer device can properly adjust the deformation equivalent of the impact, which can reduce the damage to the vehicle and reduce the impact on the rigid guardrail. damage, thereby effectively increasing the anti-collision performance of the safety device;

2. When the vehicle hits the cable, the deformation of the cable will adjust its tension, so that the moving blocks at both ends of the cable will move closer to each other to adjust the length of the cable between the two columns. That is, by adjusting the tension and length of the cable, the stress state of the safety device can be adjusted, so that the safety device can properly adjust the deformation equivalent of the impact under the condition of high bearing capacity.

Description of drawings

Fig. 1 is a schematic structural view of a highway traffic safety facility device in Embodiment 1 of the present application;

Fig. 2 is a partial cross-sectional view of a column in Embodiment 1 of the present application;

Fig. 3 is a schematic structural view of a highway traffic safety facility device in Embodiment 2 of the present application;

Fig. 4 is a top view of the guardrail unit in Embodiment 2 of the present application.

Explanation of reference signs: 1. Guardrail unit; 11. Rigid guardrail; 12. Column; 21. Cable; 22. Moving block; 23. Moving cavity; 24. First return spring; 25. Buffer rod; ; 27, sliding block; 28, second return spring; 3, through hole; 4, convex strip; 5, arched guardrail; 6, support rod; 71, support roller; 72, adjustment groove; 74, the third return spring; 8, the reinforcing rod; 9, the mounting seat; 10, the mounting hole.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings 1-4 and the embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

The embodiment of the present application also discloses a highway traffic safety facility device.

Embodiment one

Referring to FIG. 1 , the safety facility device includes several guardrail units 1 connected in sequence. The guardrail unit 1 includes a rigid guardrail 11 and two columns 12 . The two ends of the rigid guardrail 11 are fixedly connected to the sides of the two columns 12 respectively. In the embodiment of the present application, the column 12 is a steel column with a rectangular structure, and the bottom end of the column 12 is welded and fixed with a mounting seat 9, and the four corners of the mounting seat 9 are provided with mounting holes 10, through which the column 12 can be mounted. Fixed connections are at the edge of the road on the highway. Both ends of the rigid guardrail 11 are fixed on the sides of the column 12 by bolts, and the safety facility device formed by connecting the column 12 and the rigid guardrail 11 has high firmness.

Referring to Fig. 1, in order to increase the structural strength of the rigid guardrail 11, the rigid guardrail 11 includes a plurality of parallel cross bars, in the present embodiment, each rigid guard rail 11 includes three cross bars, and bolts are used at both ends of each cross bar It is fixed on the side of the column 12; multiple vertical bars are welded and fixed between two adjacent horizontal bars, and the multiple vertical bars are evenly distributed along the length direction of the horizontal bars. The structural strength of the rigid guardrail 11 can be increased by connecting and fixing two adjacent horizontal bars through the vertical bars.

1 and 2, in order to effectively increase the anti-collision performance of the safety device, a buffer assembly is arranged between two columns 12, and the buffer assembly is located on the side of the rigid guardrail 11 facing the road. The buffer assembly includes a drag cable 21 and a moving block 22, and the column 12 is provided with a moving cavity 23 along the length direction of the drag cable 21 and for the moving block 22 to move; The through hole 3 communicates with the moving cavity 23 , and the two ends of the pull cable 21 are fixedly connected to the moving blocks 22 in the two adjacent columns 12 . In this embodiment, the side of the column 12 facing the road is provided with three concave grooves, the column 12 is located at the notch of the concave groove and is detachably connected with a cover plate, and the column 12, the concave groove and the cover plate cooperate to form a moving cavity 23 ; The cable 21 is a steel strand twisted into strands, using high-strength and low-relaxation steel strands.

It should be noted that the moving block 22 needs to be installed in the moving cavity 23, and the end of the cable 21 is connected to the moving block 22 after passing through the through hole 3, and then the cover plate is fixedly connected to the side of the column 12 to cover the The notch of the recessed groove. In this embodiment, the side of the moving block 22 is fixedly connected with a first hanging ring, and the end of the drag cable 21 is fixedly connected with a second hanging ring. The end is fixed on the moving block 22; the cover plate can be fixed on the side of the column 12 by means of screws. When the vehicle hits the cable 21 , the deformation of the cable 21 will adjust its tension, so that the moving blocks 22 at both ends of the cable 21 move closer to each other to adjust the length of the cable 21 between the two columns 12 . That is, by adjusting the tension and length of the cable 21, the stress state of the safety device can be adjusted, so that the safety device can properly adjust the deformation equivalent of the impact under the condition of high load-carrying capacity.

Referring to Fig. 1 and Fig. 2, several first return springs 24 are arranged in the moving chamber 23, one end of the first returning spring 24 is fixed on the chamber wall of the moving chamber 23, and the other end is fixed on the side of the moving block 22 facing the drag cable 21 . In this embodiment, there are eight first return springs 24 in each moving cavity 23, and the eight first return springs 24 are evenly distributed on both sides of the moving block 22; and one end of the first return spring 24 is welded It is fixed on the cavity wall of the moving cavity 23, and the other end is also fixed on the side of the moving block 22 by welding. When the drag cable 21 was impacted, the tension force of the drag cable 21 could be buffered by the first return spring 24; Block 22 returns to its original position.

Referring to Fig. 1 and Fig. 2, in order to slide the moving block 22 in the moving cavity 23 better, the surface of the moving block 22 is fixedly connected with a plurality of mutually parallel semicircular convex strips 4, and the length direction of the convex strips 4 is along the moving block 22. direction of movement. In this embodiment, the convex strip 4 and the moving block 22 are integrally formed, and the contact area between the moving block 22 and the wall of the moving chamber 23 can be reduced by the semicircular convex strip 4, so that the moving block 22 can move in the moving chamber 23 It is easier to move so that the tension and length of the dragline 21 can be better adjusted.

Referring to Fig. 1 and Fig. 2, in order to enhance the overall structural strength of the safety facility device, an arched guardrail 5 is fixedly connected between the two columns 12, the bending direction of the arched guardrail 5 is towards the rigid guardrail 11, and the arched guardrail 5 is located on the rigid guardrail 11. Between the guardrail 11 and the buffer assembly; between the arched guardrail 5 and the rigid guardrail 11, a plurality of support rods 6 are fixedly connected. In this embodiment, the arch guardrail 5 includes three arc-shaped round bars parallel to each other, and a plurality of evenly distributed connecting round bars are fixed between two adjacent arc-shaped round bars by welding; Both ends are fixed on the side of the column 12 by bolts; the two ends of the support rod 6 are respectively fixed on the cross bar and the arc-shaped round bar by welding.

It should be noted that, through the cooperation of the arched guardrail 5, the rigid guardrail 11 and the support rod 6, the overall structural strength of the safety device can be enhanced; at the same time, the arched guardrail 5 can limit the degree of deformation of the cable 21, thereby reducing the If the dragline 21 is damaged, the anti-collision performance of the safety device is further increased.

The implementation principle of a highway traffic safety facility device in the embodiment of the present application is as follows: when a vehicle load hits the safety facility device obliquely along the road surface, it will first impact the cable 21, and the cable 21 will be deformed under force, and the cable will be pulled The moving blocks 22 at both ends of the cable 21 move in the moving cavity 23, so that the two moving blocks 22 on the impacted drag cables 21 move closer to each other, so as to adjust the length of the drag cables 21 between the two columns 12 and reduce the drag force. Damage occurs when the cable 21 is impacted; through the deformation of the cable 21 and the effect of the first return spring 24, the deformation equivalent of the impact can be adjusted appropriately, which can reduce the damage to the vehicle and also reduce the impact on the rigid guardrail 11. damage, thereby effectively increasing the anti-collision performance of the safety device.

Embodiment two

Referring to Fig. 3, the buffer assembly includes a plurality of buffer rods 25 parallel to each other, the side of the column 12 is provided with buffer grooves 26, the two ends of the buffer rods 25 are fixedly connected with sliding blocks 27, and the buffer grooves 26 and the sliding blocks 27 slide Shift fit; the buffer groove 26 is provided with a second return spring 28, one end of the second return spring 28 is fixed on the groove wall of the buffer groove 26, the other end is fixed on the sliding block 27, and the second return spring 28 is located at the rigid guardrail 11 and between the sliding block 27. In this embodiment, the sliding block 27 is fixed on the end of the buffer rod 25 by welding, one end of the second return spring 28 is fixed on the wall of the buffer tank 26 by welding, and the other end is fixed by welding On the sliding block 27.

It should be noted that in order to reduce the slipping of the sliding block 27 from the buffer groove 26, the sliding block 27 is a T-shaped block, and the buffer groove 26 is a T-shaped groove. Cooperating with the sliding block 27 through the buffer groove 26, the buffer bar 25 can be moved towards or away from the rigid guardrail 11; , and then part of the impact force is dispersed by the second return spring 28 to adjust the stress state of the safety facility device, so that the safety facility device can properly adjust the deformation equivalent of the impact under the condition of high load-carrying capacity.

Referring to Fig. 3 and Fig. 4, in order to increase the anti-collision performance of the safety device, a plurality of support rollers 71 are arranged between the two cross bars, and the sides of the support rollers 71 abut against the sides of the buffer bar 25; The adjusting groove 72, the rotating shaft of the support roller 71 is fixedly connected with the adjusting block 73 which slides and cooperates with the adjusting groove 72; the adjusting groove 72 is provided with several third return springs 74, and one end of the third returning spring 74 is fixed in the adjusting groove The groove wall of 72, the other end is fixed on the adjusting block 73; The moving direction of adjusting block 73 is identical with the moving direction of sliding block 27. In this embodiment, through the cooperation of the adjusting block 73 and the adjusting slot 72 , the supporting roller 71 can move toward or away from the buffer rod 25 on the cross bar. The support roller 71 is a cylindrical structure, made of PVC material, filled with non-flammable foam inside; when the vehicle hits the buffer rod 25, part of the impact force is dispersed by the third return spring 74 and the support roller 71, Further adjust the stressed state of the safety facility device, thereby reducing damage to the buffer rod 25 and further increasing the anti-collision performance of the safety facility device.

Referring to Fig. 3 and Fig. 4, in order to reduce the damage of the buffer rod 25, a plurality of reinforcement rods 8 are fixedly connected between two adjacent buffer rods 25, and the buffer rod 25 is an arc-shaped rod bent toward the cross bar, close to The support roller 71 of the column 12 has a larger radius than the support roller 71 farther from the column 12 . In this embodiment, the structural strength of the buffer assembly can be enhanced through the cooperation of the reinforcing rod 8 and the buffer rod 25; since the buffer rod 25 is an arc rod, the distance between each position of the cross bar and the buffer rod 25 is different , in order to ensure that the side of the support roller 71 abuts against the side of the buffer bar 25, the radius of the support roller 71 close to the column 12 needs to be larger than the radius of the support roller 71 away from the column 12, so that when the buffer bar 25 is hit by the vehicle, the rigid guardrail Each support roller 71 on the cross bar in 11 can be subjected to the impact of the vehicle, which can reduce the damage of the buffer bar 25 and further increase the anti-collision performance of the safety device.

The embodiment of the present application also discloses a method for optimizing highway traffic safety facilities, including the following steps:

Step S1. Acquiring the key road sections of the expressway. The key road sections include long slope and downhill road sections, tunnel entrance road sections and bridge road sections.

It should be noted that the key road section can also be a road section with a side slope slope of 1:1.6 and a filling height of more than 8.1m, or a road section with a side slope slope steeper than 1:1.6 and a filling height of more than 6.1m, or an extra-long road section. The road section of a tunnel or a group of tunnels may also be a road section with sharp curves, reverse curves or continuous curves.

Step S2, installing the guardrail unit 1 in Embodiment 1 or Embodiment 2 at the road edge of key road sections.

It should be noted that no matter it is the guardrail unit 1 in the first embodiment or the second embodiment, the installation bolts can be pre-embedded at the road edge of the key road section, and the column 12 can be fixed on the key road section through the cooperation of the installation bolt and the installation hole 10. on the road. Then the two ends of the cross bar in the rigid guardrail 11 are fixed on the upright post 12 by bolts, so that the rigid guardrail 11 is installed and fixed between the two upright posts 12 . Then according to the actual situation, select the buffer assembly in the first embodiment or the second embodiment, install and fix the buffer assembly between the two columns 12, and the buffer assembly is located on the side of the rigid guardrail 11 facing the road.

The embodiments of this specific implementation mode are all preferred embodiments of the application, and are not intended to limit the scope of protection of the application. Therefore: all equivalent changes made according to the structure, shape, and principle of the application should be covered by the application. Within the protection scope of this application.

Claims (9)

1. a highway traffic safety facility device, is characterized in that, comprises several guardrail units (1) that are connected successively, and described guardrail unit (1) comprises rigid guardrail (11) and two columns (12), and described rigid The two ends of the guardrail (11) are respectively fixedly connected to the sides of the two columns (12); a buffer assembly is arranged between the two columns (12), and the buffer assembly is located at the side of the rigid guardrail (11) facing the road. side. 2. A highway traffic safety facility device according to claim 1, characterized in that, the buffer assembly includes a drag cable (21) and a moving block (22), and there is a longitudinal pulley in the column (12). The length direction of the cable (21) and the moving cavity (23) for the moving block (22) to move; the side of the column (12) is provided with a through hole (3) for the end of the cable (21) to pass through, The through hole (3) communicates with the moving cavity (23), and the two ends of the cable (21) are respectively fixedly connected to the moving blocks (22) in two adjacent columns (12). 3. A kind of expressway traffic safety facility device according to claim 2, is characterized in that, several first return springs (24) are arranged in the moving chamber (23), and the first return spring (24) ) is fixed on the cavity wall of the moving cavity (23), and the other end is fixed on the side of the moving block (22) facing the drag cable (21). 4. A kind of expressway traffic safety facility device according to claim 2, is characterized in that, the surface of described mobile block (22) is fixedly connected with a plurality of mutually parallel semicircular protruding lines (4), and described The length direction of the convex strip (4) is set along the moving direction of the moving block (22). 5. A kind of expressway traffic safety facility device according to claim 2, is characterized in that, is fixedly connected with arched guardrail (5) between two described columns (12), and described arched guardrail (5) The bending direction is towards the rigid guardrail (11), and the arched guardrail (5) is located between the rigid guardrail (11) and the buffer assembly; between the arched guardrail (5) and the rigid guardrail (11) A plurality of support rods (6) are fixedly connected between them. 6. A highway traffic safety facility device according to claim 1, characterized in that the buffer assembly comprises a plurality of buffer rods (25) parallel to each other, and buffer grooves are provided on the side of the column (12) (26), the two ends of the buffer rod (25) are fixedly connected with a sliding block (27), and the buffer groove (26) is slidingly matched with the sliding block (27); the buffer groove (26) ) is provided with a second return spring (28), one end of the second return spring (28) is fixed on the groove wall of the buffer tank (26), and the other end is fixed on the sliding block (27), And the second return spring (28) is located between the rigid guardrail (11) and the sliding block (27). 7. A highway traffic safety facility device according to claim 6, characterized in that, said rigid guardrail (11) comprises a plurality of cross bars parallel to each other, and a plurality of cross bars are arranged between two said cross bars. A support roller (71), the side of the support roller (71) abuts against the side of the buffer bar (25); an adjustment groove (72) is provided on the cross bar, and the rotating shaft of the support roller (71) An adjustment block (73) is fixedly connected with the adjustment groove (72) to slide and fit; several third return springs (74) are arranged in the adjustment groove (72), and the third return springs (74) One end is fixed on the groove wall of the adjusting groove (72), and the other end is fixed on the adjusting block (73); the moving direction of the adjusting block (73) is the same as that of the sliding block (27) . 8. A kind of expressway traffic safety facility device according to claim 7, is characterized in that, a plurality of reinforcing rods (8) are fixedly connected between two adjacent said buffer rods (25), and said buffer rods (25) is an arc bar bent toward the cross bar, and the radius of the support roller (71) close to the column (12) is greater than the radius of the support roller (71) away from the column (12). 9. A highway traffic safety facility optimization setting method, is characterized in that, comprises the following steps: Obtain the key road sections of the expressway, the key road sections include the long slope downhill road section, the tunnel entrance road section and the bridge road section; Any one of the expressway traffic safety facility devices in claims 1-8 is installed at the road edge of the key road section.

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