CN109972570B - Self-resetting high-speed anti-collision guardrail - Google Patents
Self-resetting high-speed anti-collision guardrail Download PDFInfo
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- CN109972570B CN109972570B CN201910145964.8A CN201910145964A CN109972570B CN 109972570 B CN109972570 B CN 109972570B CN 201910145964 A CN201910145964 A CN 201910145964A CN 109972570 B CN109972570 B CN 109972570B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0407—Metal rails
- E01F15/0423—Details of rails
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0407—Metal rails
- E01F15/0423—Details of rails
- E01F15/043—Details of rails with multiple superimposed members; Rails provided with skirts
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0407—Metal rails
- E01F15/0438—Spacers between rails and posts, e.g. energy-absorbing means
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0461—Supports, e.g. posts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention relates to the technical field of anti-collision guardrails, in particular to a self-resetting high-speed anti-collision guardrail. The device comprises a stand column, a buffer device and a waveform guardrail plate, wherein the stand column is vertically fixed, the waveform guardrail plate is arranged on the front side of the stand column, and the stand column, the buffer device and the waveform guardrail plate are assembled into a unified whole; the upright post is a hollow pipe body, the top of the upright post is provided with a post cap, screw holes are formed in the front side and the rear side of the upright post, the middle lower part of the upright post is provided with a fixed plate, a limit post is arranged between the post cap and the fixed plate, and a limit hole is formed in the limit post; according to the invention, as the ultra-high molecular Polyethylene (PE) veneer is arranged on the surface of the waveform guard rail plate, the friction coefficient (below 0.2) between a vehicle and the waveform guard rail plate can be reduced, so that the shearing force generated by collision of the vehicle with the waveform guard rail plate is greatly reduced, the service life of the waveform guard rail plate is prolonged, and the occurrence probability of a rollover accident is effectively reduced.
Description
Technical Field
The invention relates to the technical field of anti-collision guardrails, in particular to a self-resetting high-speed anti-collision guardrail.
Background
Along with the rapid increase of the construction scale of high-grade highways in China, the safety protection facilities of the highways gradually draw attention, and particularly, the safety and the practicability of the high-speed crash barrier are very important in special road sections such as cliffs, rapid flows and steep slopes. A large amount of research data show that the high-speed crash barrier has quite high mechanical strength to resist the impact force of the vehicle and cannot be too high in rigidity so as to prevent serious injury to personnel in the vehicle. Therefore, the safety and effectiveness high-speed anti-collision guardrail is arranged to have quite important significance for preventing and controlling traffic accidents while the high-grade highway construction network is continuously developed.
At present, the high-speed crash barrier in China is mainly assembled by upright posts, anti-blocking blocks and waveform guardrail plates, and when a vehicle is impacted, collision energy is mainly absorbed through deformation of the waveform guardrail plates and the anti-blocking blocks so as to achieve the buffering effect on the vehicle. However, since the collision is a semi-rigid collision, kinetic energy during the collision cannot be effectively converted into potential energy, the waveform guardrail plate and the vehicle head are easily damaged seriously, and personnel in the vehicle cannot be effectively protected.
In order to overcome the defects, a self-resetting high-speed crash barrier needs to be designed and developed, so that the semi-rigid collision between the high-speed crash barrier and a vehicle can be effectively buffered into flexible collision, the life safety of personnel in the vehicle can be effectively protected, the self-resetting characteristic can be utilized to bear multiple collisions, and the utilization rate of resources is improved.
Disclosure of Invention
In view of the defects in the prior art, the invention provides the self-resetting high-speed crash barrier which can effectively absorb energy generated during collision, reduce deformation damage of a collision zone, protect the life safety of personnel in a vehicle, and play a self-resetting role by utilizing the characteristics of a shape memory alloy, a spring, a magnet and an elastic pad, so that the service life is prolonged.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a self-resetting high-speed anti-collision guardrail comprises upright posts, a buffer device and a waveform guardrail plate; the upright posts are vertically fixed, the wave-shaped guardrail plates are arranged on the front sides of the upright posts, and the wave-shaped guardrail plates and the upright posts are assembled into a unified whole through the buffer device; the upright post is a hollow pipe body, the top of the upright post is provided with a post cap, screw holes are formed in the front side and the rear side of the upright post, the middle lower part of the upright post is provided with a fixed plate, a limit post is arranged between the post cap and the fixed plate, and a limit hole is formed in the limit post; the buffer device is provided with a first buffer plate and a second buffer plate, the inner side surface of the first buffer plate is fixedly provided with a reinforcing plate, the second buffer plate is clung to the front surface of the upright post, screw holes are formed in the first buffer plate, the second buffer plate and the reinforcing plate, and the first buffer plate and the second buffer plate are connected through a spring limiter and an elastic plate; the shape memory alloy bolt sequentially penetrates through the rear wall, the front wall and the second buffer plate of the upright post through the screw hole, reaches the spring limiter and is spirally fixed; the buffer device is spirally fixed with the front wall of the upright post by using bolts, washers and nuts; the surface of the waveform guardrail plate is provided with an ultra-high molecular Polyethylene (PE) veneer, and the waveform guardrail plate is fixed on the outer surface of the first buffer plate through screws.
The shape memory alloy has a shape memory effect and pseudo-elasticity. The pseudo elasticity is expressed as that the shape memory alloy has much larger deformation recovery capacity than that of general metal under the action of external force, namely, large strain generated in the loading process can be recovered along with unloading, so that the shape memory alloy has a self-recovery effect after the impact deformation.
The spring limiter consists of an upper support, a high-stiffness spring and a lower support, wherein the upper support and the lower support are respectively fixed on the surfaces of the thick plate and the second buffer plate, and the two end heads of the high-stiffness spring are respectively buried in the upper support and the lower support. The upper support and the lower support are made of permanent magnets, and repulsive force can be generated when the two supports are mutually close. The upper support is provided with a second circular groove, and the lower support is provided with a screw hole. The structure can be increased or decreased according to the requirements of the anti-collision grade.
Further, the fixed plate is horizontally arranged and fixed with the periphery of the inner wall of the upright post, and the thickness of the fixed plate is larger than the diameter of the limiting post. The fixed plate center is equipped with first circular recess, and first circular recess diameter and degree of depth are all slightly more than spacing post diameter, and first circular recess inner wall is carved with the screw thread.
Further, one end of the limiting column is fixed with the center of the column cap, and the other end of the limiting column is spirally fixed with the first circular groove. The limiting column is provided with a limiting hole, and the diameter of the limiting hole is slightly larger than that of the shape memory alloy bolt.
Further, the shape memory alloy bolt head is preferably a hex head bolt. The shape memory alloy washer and the shape memory alloy nut which are matched with the shape memory alloy bolt are fixed on the inner wall of the upright post near one side of the head of the bolt. The distance the shape memory alloy bolt extends into the interior of the spring retainer is preferably 2/3 of the total length of the spring retainer. The distance can be correspondingly adjusted according to the requirements of the anti-collision grade.
Furthermore, the surface of the bolt inside the buffer device is smooth, but elastic spherical protrusions are arranged in a staggered mode. Through adjusting the length of the bolt, the spring limiter can have certain elastic potential energy in an initial state to resist external impact.
Further, the elastic plate is fixed between the top and the bottom of the first buffer plate and the second buffer plate.
Further, the upper support is provided with a second circular groove, the diameter of the second circular groove is slightly larger than that of the shape memory alloy bolt, and the depth of the second circular groove is preferably half of the thickness of the upper support.
Further, the screw fixing depth is preferably up to the inside of the thick plate.
Furthermore, the surface of the waveform guardrail plate is provided with an ultra-high polymer Polyethylene (PE) veneer, so that the friction coefficient (below 0.2) between the vehicle and the waveform guardrail can be reduced, and the shearing force generated when the vehicle collides with the waveform guardrail plate is greatly reduced.
The invention has the beneficial effects that:
1: according to the invention, as the ultra-high molecular Polyethylene (PE) veneer is arranged on the surface of the waveform guard rail plate, the friction coefficient (below 0.2) between a vehicle and the waveform guard rail plate can be reduced, so that the shearing force generated by collision of the vehicle with the waveform guard rail plate is greatly reduced, the service life of the waveform guard rail plate is prolonged, and the occurrence probability of a rollover accident is effectively reduced.
2: the buffer device integrates a plurality of buffer structures, and can better meet the strength requirements of different anti-collision grades through reasonable combination. The area of the first buffer plate is larger, the impact force generated by collision in multiple directions can be effectively received, and the stability of the first buffer plate can be effectively enhanced by the thick plate. The spring limiter can effectively convert kinetic energy generated by collision into elastic potential energy, namely semi-rigid collision is buffered into flexible collision, and deformation damage of a collision area is greatly reduced. Meanwhile, repulsive force generated by mutual approaching between the upper support and the lower support and elastic force generated by compression deformation of the elastic plate also buffer part of impact force, if the impact force generated by collision is large, the deformation distance of the spring limiter exceeds a reserved distance, and the shape memory alloy bolt and the buffer device jointly absorb collision energy of a vehicle through combination with the upper support groove. The buffer capacity is gradually enhanced along with the increase of the buffer distance, so that the life safety of personnel in the vehicle is effectively protected.
3: the shape memory alloy bolt, the spring limiter, the elastic plate and the repulsive force generated by the mutual approaching of the upper support and the lower support have self-resetting effect, so that the recycling rate of the anti-collision guardrail is improved, the resources are saved, and the environment is protected.
4: according to the invention, the elastic spherical protrusions staggered on the surface of the bolt can generate certain resistance to the first buffer plate and the thick plate. The heavy plate and the first buffer plate compress and deform the elastic spherical surface bulge, the friction force between the heavy plate and the elastic spherical surface bulge and the friction force between the first buffer plate and the elastic spherical surface bulge can absorb energy generated during collision of a vehicle, and the buffer performance of the high-speed crash barrier to the vehicle is further enhanced.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is an elevation view of a self-resetting high speed crash barrier;
FIG. 2 is a cross-sectional view of section I-I of FIG. 1;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
FIG. 4 is an enlarged schematic view at B of FIG. 2;
FIG. 5 is an enlarged schematic view at C of FIG. 2;
FIG. 6 is an enlarged schematic view of FIG. 2 at D;
FIG. 7 is an enlarged schematic view of FIG. 2 at E;
in the figure: 1 is a column, 2 is a buffer device, 3 is a wave-shaped guardrail plate, 4 is a screw, 5 is a cross beam gasket, 6 is a screw through hole, 7 is an ultra-high molecular Polyethylene (PE) veneer, 8 is a first buffer plate, 9 is a thickening plate, 10 is an elastic plate, 11 is an upper support, 12 is a high stiffness coefficient spring, 13 is a lower support, 14 is a second buffer plate, 15 is a bolt, 16 is a nut, 17 is a washer, 18 is an elastic spherical bulge, 19 is a column cap, 20 is a limit post, 21 is a limit hole, 22 is a shape memory alloy bolt, 23 is a shape memory alloy nut, 24 is a shape memory alloy washer, 25 is a fixed plate, 26 is a first circular groove, 27 is a second circular groove, and 28 is a screw hole.
Description of the embodiments
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
see fig. 1-7.
The invention discloses a self-resetting high-speed anti-collision guardrail, which comprises an upright post 1, a buffer device 2 and a waveform guardrail plate 3; the upright post 1 is vertically fixed, the wave-shaped guardrail plate 3 is arranged on the front side of the upright post 1, and the wave-shaped guardrail plate and the upright post are assembled into a unified whole through the buffer device 2; the upright column 1 is a hollow tube body, the top is provided with a column cap 19, screw holes 28 are formed in the front side and the rear side, a fixed plate 25 is arranged at the middle lower part, a limit column 20 is arranged between the column cap 19 and the fixed plate 25, and a limit hole 21 is formed in the limit column 20; the buffer device 2 is provided with a first buffer plate 8 and a second buffer plate 14, a thickening plate 9 is fixed on the inner side surface of the first buffer plate 8, the second buffer plate 14 is clung to the front surface of the upright post 1, screw holes 28 are formed in the first buffer plate 8, the second buffer plate 14 and the thickening plate 9, and the first buffer plate 8 and the second buffer plate 14 are connected through a spring limiter A and an elastic plate 10; the shape memory alloy bolt 22 sequentially penetrates through the rear wall, the front wall and the second buffer plate 14 of the upright post 1 through the screw hole 28 to reach the inside of the spring limiter A and is fixed in a spiral manner; the buffer device 2 is spirally fixed with the front wall of the upright post 1 by using a bolt 15, a washer 17 and a nut 16; the surface of the wave-shaped guard rail plate 3 is provided with an ultra-high molecular Polyethylene (PE) veneer 7, and the wave-shaped guard rail plate 3 is fixed on the outer surface of the first buffer plate 8 through screws 4.
The shape memory alloy has a shape memory effect and pseudo-elasticity. The pseudo elasticity is expressed as that the shape memory alloy has much larger deformation recovery capacity than that of general metal under the action of external force, namely, large strain generated in the loading process can be recovered along with unloading, so that the shape memory alloy has a self-recovery effect after the impact deformation.
The spring limiter A consists of an upper support 11, a high-stiffness spring 12 and a lower support 13, wherein the upper support 11 and the lower support 13 are respectively fixed on the surfaces of the thick plate 9 and the second buffer plate 14, and two end parts of the high-stiffness spring 12 are buried in the upper support 11 and the lower base 13. The upper support 11 and the lower support 13 are made of permanent magnets, and repulsive force is generated when the two supports are close to each other. The upper support 11 is provided with a second circular recess 27 and the lower support 13 is provided with a screw hole 28. The structure can be increased or decreased according to the requirements of the anti-collision grade.
The fixing plate 25 is horizontally arranged and fixed on the periphery of the inner wall of the upright post 1, and the thickness of the fixing plate is larger than the diameter of the limiting post 20. The center of the fixing plate 25 is provided with a first circular groove 26, the diameter and the depth of the first circular groove 26 are slightly larger than those of the limiting column 20, and threads are engraved on the inner wall of the first circular groove 26.
One end of the limiting post 20 is fixed with the center of the post cap 19, and the other end of the limiting post is fixed with the first circular groove 26 in a spiral mode. The limiting column 20 is provided with a limiting hole 21, and the diameter of the limiting hole 21 is slightly larger than that of the shape memory alloy bolt 22.
The head of the shape memory alloy bolt 22 is preferably a hex head bolt. A shape memory alloy washer 24 and a shape memory alloy nut 23 which are matched with the shape memory alloy bolt 22 are fixed on the inner wall of the upright post 1 near the head side of the shape memory alloy bolt 22. The shape memory alloy bolt 22 extends into the interior of the spring retainer a distance of preferably 2/3 of the total length of the spring retainer a. The distance can be correspondingly adjusted according to the requirements of the anti-collision grade.
The bolts 15 inside the buffer device 2 have smooth surfaces but are staggered with elastic spherical protrusions 18. By adjusting the length of the bolt 15, the spring limiter a can have a certain elastic potential energy in an initial state to resist external impact.
The elastic plate 10 is fixed between the top and bottom of the first and second buffer plates 8 and 14.
The upper support 11 is provided with a second circular recess 27 having a diameter slightly larger than the diameter of the shape memory alloy bolt 22 and a depth preferably half the thickness of the upper support 11.
The depth of the screw 4 is preferably set to the inside of the thick plate 9.
The surface of the waveform guardrail plate 3 is provided with an ultra-high polymer Polyethylene (PE) veneer 7, so that the friction coefficient (below 0.2) between the vehicle and the waveform guardrail plate 3 can be reduced, and the shearing force generated when the vehicle collides with the waveform guardrail plate 3 is greatly reduced.
Specifically, the technical principle of the self-resetting high-speed crash barrier is that when a vehicle collides with the high-speed crash barrier, the buffering process can be divided into three stages. The first stage is that the wave fence panel 3 absorbs a part of collision energy by elastic deformation. When the residual collision energy is larger than the initial elastic potential energy of the spring limiter A, the first buffer plate 8 begins to enter a second stage, the elastic plate 10 and the spring limiter A are compressed by the thick plate 9, the collision energy absorbed in the stage gradually increases along with the increase of the deformation of the elastic plate 10 and the spring limiter A, and meanwhile, the repulsive force generated by mutual approaching between the upper support 11 and the lower support 13, the pressing deformation of the elastic spherical bulge 18 by the thick plate 9 and the first buffer plate 8, the friction force between the thick plate 9 and the elastic spherical bulge 18 and the friction force between the first buffer plate 8 and the elastic spherical bulge 18 can absorb certain collision energy. When the deformation distance of the spring retainer a exceeds the predetermined distance, the shape memory alloy bolt 22 completely enters the second circular groove 27, and the cushioning process starts to enter the third stage, at which time the shape memory alloy bolt 22 absorbs the collision energy of the vehicle together with the cushioning device 2 by compression deformation. The three-layer buffering process finally absorbs the impact energy completely and enables the high-speed crash barrier to reset automatically along with the unloading.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes or direct or indirect application in the relevant art utilizing the present specification and drawings are included in the scope of the present invention.
Claims (6)
1. The utility model provides a high-speed anticollision barrier of self-resetting, includes stand, buffer and wave form guardrail board, its characterized in that: the upright posts are vertically fixed, the wave-shaped guardrail plates are arranged on the front sides of the upright posts, and the wave-shaped guardrail plates and the upright posts are assembled into a unified whole through the buffer device; the upright post is a hollow pipe body, the top of the upright post is provided with a post cap, screw holes are formed in the front side and the rear side of the upright post, the middle lower part of the upright post is provided with a fixed plate, a limit post is arranged between the post cap and the fixed plate, and a limit hole is formed in the limit post; the buffer device is provided with a first buffer plate and a second buffer plate, the inner side surface of the first buffer plate is fixedly provided with a reinforcing plate, the second buffer plate is clung to the front surface of the upright post, screw holes are formed in the first buffer plate, the second buffer plate and the reinforcing plate, and the first buffer plate and the second buffer plate are connected through a spring limiter and an elastic plate; the shape memory alloy bolt sequentially penetrates through the rear wall, the front wall and the second buffer plate of the upright post through the screw hole, reaches the spring limiter and is spirally fixed; the buffer device is spirally fixed with the front wall of the upright post by using bolts, washers and nuts; the surface of the waveform guardrail plate is provided with an ultra-high molecular Polyethylene (PE) veneer, and the waveform guardrail plate is fixed on the outer surface of the first buffer plate through screws; the shape memory alloy has a shape memory effect and pseudo elasticity; the pseudo elasticity is expressed as that the shape memory alloy has much larger deformation recovery capability than that of common metal under the action of external force, namely, large strain generated in the loading process can be recovered along with unloading, so that the self-recovery effect is achieved after the impact deformation; the spring limiter consists of an upper support, a high-stiffness spring and a lower support, wherein the upper support and the lower support are respectively fixed on the surfaces of the thick plate and the second buffer plate, and the two end heads of the high-stiffness spring are respectively buried in the upper support and the lower support; the upper support and the lower support are made of permanent magnets, repulsive force is generated when the two supports are close to each other, the upper support is provided with a second circular groove, and the lower support is provided with a screw hole; the head of the shape memory alloy bolt is a hexagon head bolt; the shape memory alloy washer and the shape memory alloy nut which are matched with the shape memory alloy bolt are fixed on the inner wall of the upright post at one side close to the head of the bolt; the distance that the shape memory alloy bolt stretches into the spring limiter is 2/3 of the total length of the spring limiter, and the distance can be correspondingly adjusted according to the requirements of anti-collision grades; the surface of the bolt inside the buffer device is smooth, but elastic spherical protrusions are arranged in a staggered manner; through adjusting the length of bolt, can make the spring limiter just have certain elasticity potential energy and resist external impact at initial state, the elasticity sphere arch of bolt surface staggered arrangement can produce certain resistance to first buffer plate and the thick plate that adds, adds thick plate and first buffer plate with elasticity sphere arch oppression deformation, add frictional force between thick plate and the elasticity sphere arch, the frictional force between first buffer plate and the elasticity sphere arch all can absorb the energy that produces when the vehicle collision.
2. A self-resetting high-speed crash barrier as recited in claim 1, wherein: the fixed plate level sets up, is fixed around with the stand inner wall, and thickness is greater than spacing post diameter, and the fixed plate center is equipped with first circular recess, and first circular recess diameter and degree of depth are all slightly greater than spacing post diameter, and first circular recess inner wall is carved with the screw thread.
3. A self-resetting high-speed crash barrier as recited in claim 1, wherein: one end of the limiting column is fixed with the center of the column cap, and the other end of the limiting column is spirally fixed with the first circular groove; the limiting column is provided with a limiting hole, and the diameter of the limiting hole is slightly larger than that of the shape memory alloy bolt.
4. A self-resetting high-speed crash barrier as recited in claim 1, wherein: the elastic plate is fixed between the tops and the bottoms of the first buffer plate and the second buffer plate.
5. A self-resetting high-speed crash barrier as recited in claim 1, wherein: the upper support is provided with a second circular groove, the diameter of the second circular groove is slightly larger than that of the shape memory alloy bolt, and the depth of the second circular groove is half of the thickness of the upper support.
6. A self-resetting high-speed crash barrier as recited in claim 1, wherein: the screw fixing depth is preferably equal to the inside of the thick plate; the surface of the waveform guardrail plate is provided with an ultra-high polymer Polyethylene (PE) veneer, so that the friction coefficient between the vehicle and the waveform guardrail is reduced to be below 0.2, and the shearing force generated when the vehicle collides with the waveform guardrail plate is greatly reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145964.8A CN109972570B (en) | 2019-02-27 | 2019-02-27 | Self-resetting high-speed anti-collision guardrail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145964.8A CN109972570B (en) | 2019-02-27 | 2019-02-27 | Self-resetting high-speed anti-collision guardrail |
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| Publication Number | Publication Date |
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| CN109972570A CN109972570A (en) | 2019-07-05 |
| CN109972570B true CN109972570B (en) | 2023-10-03 |
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| CN201910145964.8A Active CN109972570B (en) | 2019-02-27 | 2019-02-27 | Self-resetting high-speed anti-collision guardrail |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111733736B (en) * | 2020-06-24 | 2021-12-03 | 四川路桥建设集团交通工程有限公司 | Corrugated beam steel guardrail and construction method thereof |
| CN115263065B (en) * | 2022-08-29 | 2024-05-28 | 贵州恒创志达电力科技有限公司 | Power distribution network pole with protector |
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| CN205775840U (en) * | 2016-07-12 | 2016-12-07 | 南京万通城市建设设计咨询有限公司 | Overpass guard rail |
| CN206204841U (en) * | 2016-10-31 | 2017-05-31 | 重庆中设工程设计股份有限公司 | Elastic anti-collision corrugated guardrail |
| CN107142871A (en) * | 2017-05-04 | 2017-09-08 | 江苏理工学院 | A kind of magnetic cushion road separator device |
| CN206706496U (en) * | 2017-04-07 | 2017-12-05 | 河南城建学院 | A kind of road safety device |
| CN108677811A (en) * | 2018-06-12 | 2018-10-19 | 沈阳建筑大学 | Multi-buffer freeway guardrail structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060072726A (en) * | 2004-12-23 | 2006-06-28 | 재단법인 포항산업과학연구원 | Impact relaxation device of a steel bridge railing |
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2019
- 2019-02-27 CN CN201910145964.8A patent/CN109972570B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205775840U (en) * | 2016-07-12 | 2016-12-07 | 南京万通城市建设设计咨询有限公司 | Overpass guard rail |
| CN206204841U (en) * | 2016-10-31 | 2017-05-31 | 重庆中设工程设计股份有限公司 | Elastic anti-collision corrugated guardrail |
| CN206706496U (en) * | 2017-04-07 | 2017-12-05 | 河南城建学院 | A kind of road safety device |
| CN107142871A (en) * | 2017-05-04 | 2017-09-08 | 江苏理工学院 | A kind of magnetic cushion road separator device |
| CN108677811A (en) * | 2018-06-12 | 2018-10-19 | 沈阳建筑大学 | Multi-buffer freeway guardrail structure |
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| CN109972570A (en) | 2019-07-05 |
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