CN117071478A

CN117071478A - Flexible protection system for ramp nose

Info

Publication number: CN117071478A
Application number: CN202310934655.5A
Authority: CN
Inventors: 何磊; 翟晓亮; 侯旭; 黄博
Original assignee: CCCC First Highway Consultants Co Ltd
Current assignee: CCCC First Highway Consultants Co Ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2023-11-17

Abstract

The invention relates to a flexible protection system for a ramp nose, which comprises a first protection part, wherein the first protection part comprises a first barrier net, the first protection part replaces a nose section of a guardrail, one end of the first barrier net is connected with the guardrail on one side, the other end of the first barrier net is connected with the guardrail or the ground on the other side, the first barrier net comprises a braided rope, the first barrier net is erected through a plurality of first upright posts, and the first upright posts comprise a flexible inner core and an outer wrapping buffer layer. The system adopts a flexible protection thought, can effectively weaken the impact energy of the vehicle, improves the safety degree of the vehicle and drivers and passengers, greatly increases the arrangement flexibility and adaptability, effectively reduces the casualties degree of accidents, is convenient and quick to rescue the vehicle, has simple structure arrangement and low production cost.

Description

Flexible protection system for ramp nose

Technical Field

The invention relates to the technical field of traffic safety facilities, in particular to a flexible protection system for a ramp nose.

Background

At present, a wave beam guardrail is generally adopted in a safety protection structure of a ramp outlet of an expressway and a bifurcation of a main line highway, namely, a road side protection is formed by bending the wave beam guardrail in a nose triangular area. Although the wave beam guardrail has a certain energy dissipation effect, if an accident occurs in the area, the area is easy to generate a front collision, and the energy dissipation effect of the existing wave beam guardrail is limited, so that the damage degree to the vehicle after the accident occurs in the area is more serious. At present, the accident occurrence is reduced by improving the warning effect through adopting warning piles and scribing in the area, but the serious accident of vehicle destruction and personal death is difficult to avoid fundamentally by adopting the measures.

Disclosure of Invention

The invention aims to overcome the defects that the prior ramp nose protection structure mainly adopts a warning board or a waveform beam guardrail, has limited protection effect and can not effectively reduce the injury degree of accidents to people and vehicles, and provides a flexible protection system for the ramp nose.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a flexible protection system of ramp nose, contains first protection component, first protection component contains first block, the nose section of guardrail is replaced to first protection component, first block one end is connected in one side the guardrail, the other end is connected in the other side guardrail or ground, first block contains the rope of weaving, first block is erected through a plurality of first stands, first stand contains flexible inner core and outsourcing buffer layer.

By adopting the flexible protection system for the ramp nose, the first protection part replaces the nose section of the guardrail, namely the section is not provided with the guardrail structure, and the two ends of the first protection part are connected with the tail ends of the original guardrail, so that the situation that the conventional concrete or steel structure guardrail is wrapped with the buffer material when impacted is avoided, the structural rigidity is high, and the damage to vehicles or personnel is easily caused; the first protective part can be arranged in the nose section along the position and trend of the original guardrail structure, and can be arranged into a V shape, a straight shape, an arc shape and the like according to actual needs, if the first protective part is arranged into a straight shape, two ends of the first barrier net are respectively connected with the guardrails of the main road and the guardrails of the ramp, if the first protective part is arranged into a V shape, one end of the first barrier net along one side of the main road is connected with the main road guardrails, the other end of the first barrier net can be connected with the ground anchors, and one side of the ramp is similarly arranged, namely the first barrier net is connected with the ground anchors at the tail ends of the V shape, and the other end of the first barrier net is connected with guardrails of corresponding traffic lanes. The first block is used for intercepting vehicles, and the first block comprises a braiding rope, the braiding process of textiles such as sweater and braiding belt in the prior art can be adopted, the section size, tightness degree of the braiding rope, net structure of the first block and the like are set according to actual needs, the braiding rope can be stretched and tightened after being impacted, all strands of braiding wires of the braiding rope can be extruded, drawn wires and rubbed, so that mechanical energy is effectively consumed, the purpose of flexibly buffering and intercepting vehicles is achieved, a flexible inner core is used for providing certain rigidity to support a first upright column for mounting the first block, namely the braiding rope passes through the first upright column to form a continuous block structure, the first upright column is used for keeping the interval of the braiding rope, the flexible inner core adopts flexible components such as PVC, PU, PE, TPU and the like, compared with metal components, the first block can not be broken into sharp parts to cause secondary injuries after being impacted, the first upright column can be effectively matched with the first block to be deformed together for interception, the section size of the flexible inner core can be reduced as far as possible, further rigidity of the flexible inner core is reduced, the flexible inner core is guaranteed, and the flexible protective upright column is guaranteed, and the whole section can be effectively supported by the dimension of the whole upright column.

The protection system adopts a flexible protection thought, can effectively weaken the impact energy of the vehicle, improves the safety degree of the vehicle and drivers and passengers, greatly increases the arrangement flexibility and adaptability, effectively reduces the casualties degree of accidents, is convenient and quick to rescue the vehicle, has simple structure arrangement and low production cost.

Preferably, the first protection components are arranged in a V shape, and linkage energy consumption components are connected between the first blocking nets at two sides of the V shape.

Further preferably, the linked energy consuming component comprises a braided rope.

The V-shaped two sides of the first protection component are effectively connected to form a multi-layer linkage energy consumption device, no matter the vehicle collides from any side, namely one side of a ramp or one side of a main road, the whole first protection component can be driven by the linkage energy consumption component to deform jointly to intercept energy consumption, the interception capability is improved, and the safety degree after collision is improved.

Preferably, the protective device further comprises a second protective component, the second protective component is arranged in a V shape, two ends of a V-shaped opening of the second protective component are respectively connected to the guardrails, the V-shaped opening of the second protective component faces the nose section, the second protective component comprises a second barrier net, the second barrier net comprises a braiding rope, the second barrier net is erected through a plurality of second upright posts, and the second upright posts comprise a flexible inner core and an outer wrapping buffer layer.

The second block is the same as the first block, is connected to the ground anchor at the end of the V-shape, and is connected to the guardrail corresponding to the traffic lane at the other end, and of course, the whole net surface can also be supported at the end of the V-shape through the second upright post, so that the V-shaped structure is stretched.

Further preferably, the energy consumption and strength of the second barrier net are greater than the energy consumption and strength of the first barrier net, respectively.

The energy consumption and strength can be adjusted by the material of the weave, the thickness, the tightness, the form of the mesh, the number of energy consumption components attached to the woven rope, the performance and the like.

Further preferably, the second pillar is located at a V-shaped end of the second shielding member.

Preferably, the braided rope is further braided with a plurality of loops, the loops are distributed along the length direction of the braided rope, elastic plastic damping pieces are arranged in the loops, and the braided rope can be stretched to drive the loops to extrude the elastic plastic damping pieces.

Further preferably, the elastoplastic damping member is made of at least one of foam and rubber.

Further preferably, the elastoplastic damping members are circumferentially distributed along a cross section of the braided rope.

Preferably, the braided rope is a nylon rope, and the outer wrapping buffer layer is high-elastic sponge or foam.

In summary, compared with the prior art, the invention has the following beneficial effects:

1. the flexible protection system for the ramp nose end adopts a flexible protection thought, can effectively weaken impact energy of a vehicle, lighten damage, avoid a conventional hard interception mode of wrapping buffer materials with concrete or steel structure guardrails, avoid secondary injury caused by breaking into sharp parts after being impacted, improve the safety of the vehicle and drivers and passengers, greatly increase the arrangement flexibility and adaptability, effectively reduce the casualty degree of accidents, facilitate rapid implementation of rescue of the vehicle, simplify the structure arrangement and lower the production cost.

Description of the drawings:

FIG. 1 is a schematic plan view of a flexible protection system for a ramp nose according to embodiment 1;

fig. 2 is a schematic elevational view of one side of the first protective member of embodiment 1;

FIG. 3 is a large view of the collar of example 1;

fig. 4 is a schematic view showing an initial state of the braided rope in example 1;

fig. 5 is a schematic view showing the intercepting state of the braided rope in example 1;

FIG. 6 is a schematic plan view of a flexible protection system for a ramp nose according to example 2;

FIG. 7 is a cross-sectional view of A-A in FIG. 6;

FIG. 8 is a schematic plan view of a flexible protection system for a ramp nose according to example 3;

fig. 9 is a schematic elevational view of one side of the second shield member of embodiment 3.

The marks in the figure: the novel energy-saving device comprises a first upright post, a 11-flexible inner core, a 12-outer buffer layer, a 2-first blocking net, a 3-linkage energy consumption component, a 4-guardrail, a 5-second upright post, a 6-second blocking net, a 61-annular sleeve and a 62-elastoplastic damping piece.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings and specific examples. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.

Example 1

The flexible protection system for the nose end of the ramp comprises a first protection part, as shown in fig. 1-2, wherein the first protection part comprises a first barrier net 2, the first protection part replaces the nose end section of a guardrail 4, one end of the first barrier net 2 is connected with the guardrail 4 on one side, the other end of the first barrier net is connected with the guardrail 4 or the ground on the other side, the first barrier net 2 comprises weaving ropes, the first barrier net 2 is erected through a plurality of first upright posts 1, and the first upright posts 1 comprise a flexible inner core 11 and an outer wrapping buffer layer 12.

Specifically, as shown in fig. 1, the first protection component is located at the nose end of the guardrail 4 and is in a V-shaped arrangement, the end of the V-shaped first barrier net 2 is connected with a ground anchor, the other end of the V-shaped first barrier net is connected with concrete or steel structures at the end of the guardrail 4 corresponding to a traffic lane, as shown in fig. 2, the first barrier net 2 is used for intercepting a vehicle, the first barrier net 2 can be formed by knitting nylon ropes with high strength, polyester, polypropylene and other materials can also be selected for knitting, the specific knitting process can be adopted in the prior art, such as knitting processes of sweater, woven belts and other textile materials, the section size and tightness of the knitted ropes, the net structure of the first barrier net 2 and the like are set according to actual requirements, after the knitted ropes are impacted, the knitted ropes are stretched and tensioned, and each strand of the knitted ropes are extruded, drawn and rubbed, so that mechanical energy is effectively consumed, and the purpose of intercepting the vehicle by flexible buffer is achieved.

The flexible inner core 11 is used for providing a certain rigidity to support the first upright column 1 for the installation of the first barrier net 2, the parameters of the section shape, the size, the arrangement interval of the flexible inner core 11, the layer number, the performance, the vertical interval and the like of the first barrier net 2 are determined according to actual design requirements, the flexible inner core 11 adopts flexible components, such as PVC, PU, PE, TPU and the like, for example, plastic rods with the diameter of 2-3.5cm are adopted, the outer wrapping buffer layer 12 plays a role in buffering, and the flexible inner core has the characteristics of soft anti-collision, corrosion resistance, high temperature resistance and aging resistance, and the like, and can be selected from high-elastic sponge, foam and the like.

The nose section is not provided with a guardrail structure or an anti-collision wall any more, so that the rigid structure is prevented from being intercepted; the position and trend of the original guardrail structure can be used along by the arrangement shape of the first protection part at the nose section, the V-shaped structure is exemplified in the embodiment, a larger interception range is formed, the interception effect can be realized on the coming vehicles in the directions of the main road and the ramp, the drawing is only schematic, the V-shaped structure does not limit the tail end to be a tip, namely, only a single first upright post 1 is adopted, the number of the first upright posts 1 can be arranged according to actual needs, and even if the tail end of the V-shaped structure forms a flat section or an arc section.

As shown in fig. 3, a plurality of loops 61 may be further woven on the nylon rope, the loops 61 formed by weaving may be reduced in size when the nylon rope is integrally stretched, the weaving method may be a weaving method according to the prior art, the loops 61 are distributed along the length direction of the nylon rope, and elastic plastic damping members 62 are disposed in the loops 61, as shown in fig. 4, the elastic plastic damping members 62 may be foam members, rubber members, or foam and rubber polymer members, and the shape may be spherical, rod-like, capsule-like, etc., the shape and size of the elastic plastic damping members 62 are satisfied so as to be capable of being stably clamped into the loops 61, the elastic plastic damping members 62 are distributed along the circumferential direction of the section of the nylon rope, and the number in the circumferential direction and the density distributed along the longitudinal direction of the nylon rope are determined according to actual energy consumption requirements.

When a vehicle collides with the first barrier net 2, the first barrier net 2 is tensioned by a tensile force, the annular sleeve 61 is tightened to further squeeze the elastoplastic damping piece 62, the elastoplastic damping piece 62 can bear a certain pressure to generate plastic deformation, but when the pressure borne by the elastoplastic damping piece 62 exceeds a preset value, the elastoplastic damping piece 62 is broken, as shown in fig. 9, namely, the elastoplastic damping piece 62 can generate three stages of elastic deformation, plastic deformation and breaking when being squeezed, the friction force generated by the wire drawing of the rope woven among various strands when the annular sleeve 61 is contracted and the plastic deformation generated by the extrusion of the elastoplastic damping piece 62 and the chemical bonding force among structural molecules generated when being broken can generate damping purposes, namely, the linear tightening of the woven rope is matched with the annular sleeve 61 to squeeze the elastoplastic damping piece 62 to convert the extrusion mechanical energy transmitted from outside into material deformation energy, the dissipation energy is further improved, the interception performance of the first protection part is further improved, the vehicle is effectively decelerated until the vehicle is stopped, the purpose of flexible protection is achieved, the accident vehicle kinetic energy is effectively reduced in a short time, the vehicle safety, the flexible braking and the vehicle and the accident and the rescue and rescue of the vehicle are facilitated.

The first guard member may form a multi-layered arrangement on the intercepting path according to actual needs.

Example 2

The flexible protection system for the ramp nose end further comprises a linkage energy consumption component 3 on the basis of the embodiment 1, wherein the linkage energy consumption component 3 is positioned between the first blocking nets 2 on two sides of the V shape, as shown in fig. 6-7. The V-shaped two sides of the first protection component can be effectively connected by the aid of the linkage energy consumption component 3, a multi-layer linkage energy consumption device is formed, no matter vehicles collide from any side, namely one side of a ramp or one side of a main road, the whole first protection component can be driven by the linkage energy consumption component 3 to deform jointly to intercept energy consumption, interception capacity is improved, and safety degree after collision is improved.

The linkage power consumption component 3 can also adopt the structural style like the first block 2, if include a plurality of nylon ropes that transversely lay weave the structure, can also select materials such as dacron, polypropylene fibre, and weave a plurality of loop 61 on the nylon rope, also be equipped with elastoplastic damping part 62 (not shown in fig. 7) in the loop 61, the linkage power consumption component 3 can effectively form the linkage protection, can avoid rigidity too big formation hard interception again, cause the vehicle to obviously damage, also can avoid breaking out sharp-pointed position in the interception process, cause further injury and damage, can also form further messenger's vehicle speed reduction in certain procedure, and then improve the interception effect, shorten the braking distance, improve the security.

Example 3

The flexible protection system for the ramp nose end of the invention further comprises a second protection component on the basis of the embodiment 2, as shown in fig. 8-9, the second protection component is arranged in a V shape, fig. 8 only shows that the second protection component is connected with a ground anchor at the tail end of the V shape, the other end of the second protection component is connected with a guardrail 4 corresponding to a traffic lane, and the second protection component can be connected with the connecting end surface of the first protection component and the guardrail 4 or can be connected with the inner side surface of the guardrail 4. The V-shaped opening of the second protection part faces the nose section, namely the V-shaped opening of the second protection part is opposite to the V-shaped opening of the first protection part, the second protection part comprises a second barrier net 6, the second barrier net 6 also comprises a braiding rope, the second barrier net 6 is erected through a plurality of second upright posts 5, the second upright posts 5 comprise flexible inner cores 11 and an outer wrapping buffer layer 12, the second upright posts 5 are positioned at the tail ends of the V-shaped ends of the second protection part, namely the V-shaped cross connection parts of the first protection part and the second barrier net 6 at the corresponding side penetrates through the second upright posts 5 to be connected to a ground anchor.

The optional materials of the flexible inner core 11 and the outer wrapping buffer layer 12 corresponding to the second upright 5 are the flexible inner core 11 and the outer wrapping buffer layer 12 corresponding to the first upright 1, and the relevant structural parameters of the flexible inner core 11 and the outer wrapping buffer layer 12 corresponding to the second upright 5 are determined according to actual needs.

The second barrier net 6 may also be in a structure like the first barrier net 2, i.e. a nylon rope knitting structure, or may be made of polyester, polypropylene, etc., and a plurality of loops 61 are knitted on the nylon rope, and elastic-plastic damping members 62 (not shown in fig. 9) are also provided in the loops 61.

The second protection component is additionally arranged, so that the flexible protection system forms a triple interception combination, and the vehicle is effectively decelerated until stopping; preferably, the energy consumption and strength of the second barrier net 6 are greater than those of the first barrier net 2, respectively, and may be adjusted by the material being knitted, the knitting process, the thickness, the tightness, the form of the net face, and the number, properties, etc. of the elastoplastic damping members 62 attached to the knitted rope. If the second blocking net 6 is woven into a horizontal-vertical bidirectional structure in this embodiment, the second blocking net can be woven wider, and the elastoplastic damping component 62 with more consumption can be additionally arranged to adjust the energy consumption time of the corresponding blocking net when the vehicle contacts, namely, the blocking and the decelerating are performed through the first protection component with lower energy consumption capability when the vehicle speed is higher, and the blocking is performed through the second protection component with higher energy consumption capability when the vehicle speed is lower, so that the blocking process is more attached, and the safety and the effectiveness of vehicle blocking are improved.

Of course, the second barrier net 6 may be of a completely different construction to the first barrier net 2.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. The utility model provides a flexible protection system of ramp nose, its characterized in that contains first protection component, first protection component contains first block (2), the nose section of guardrail (4) is replaced to first protection component, first block (2) one end is connected in guardrail (4) of one side, the other end is connected in guardrail (4) of opposite side or ground, first block (2) contain the rope of weaving, first block (2) are erect through a plurality of first stand (1), first stand (1) contain flexible inner core (11) and outsourcing buffer layer (12).

2. The flexible protection system for the nose end of the ramp according to claim 1, characterized in that the first protection parts are arranged in a V shape, and the first barrier nets (2) positioned at two sides of the V shape are connected with linkage energy consumption parts (3).

3. Flexible protection system for the nose of a ramp according to claim 2, characterized in that the linked energy consuming part (3) comprises a braided rope.

4. The flexible protection system for the nose end of a ramp according to claim 1, further comprising a second protection component, wherein the second protection component is arranged in a V-shape, two ends of the V-shaped opening of the second protection component are respectively connected to the guard rail (4), the V-shaped opening of the second protection component faces the nose end section, the second protection component comprises a second barrier net (6), the second barrier net (6) comprises a braiding rope, the second barrier net (6) is erected by a plurality of second upright posts (5), and the second upright posts (5) comprise a flexible inner core (11) and an outer buffer layer (12).

5. The flexible protection system for the nose end of a ramp as claimed in claim 4, characterized in that the energy consumption capacity and the strength of the second barrier (6) are respectively greater than those of the first barrier (2).

6. A flexible protection system for the nose of a ramp as claimed in claim 4, characterized in that the second upright (5) is located at the V-shaped end of the second protection member.

7. The flexible protection system for the nose end of the ramp according to any one of claims 1 to 6, wherein a plurality of loops (61) are further woven on the woven rope, the loops (61) are distributed along the length direction of the woven rope, elastic plastic damping members (62) are arranged in the loops (61), and the woven rope can be stretched to drive the loops (61) to squeeze the elastic plastic damping members (62).

8. The flexible protection system for a ramp nose according to claim 7, wherein the elastoplastic damping member (62) is made of at least one of foam or rubber.

9. The flexible protection system of a ramp nose according to claim 7, characterized in that said elastoplastic damping members (62) are circumferentially distributed along a section of said braided rope.

10. The flexible protection system for the nose end of a ramp according to any one of claims 1-6, wherein the braided rope is a nylon rope and the outer buffer layer (12) is a high-elastic sponge or foam.