CN110777700A - Multistage energy consumption highway buffer stop - Google Patents
Multistage energy consumption highway buffer stop Download PDFInfo
- Publication number
- CN110777700A CN110777700A CN201911079014.6A CN201911079014A CN110777700A CN 110777700 A CN110777700 A CN 110777700A CN 201911079014 A CN201911079014 A CN 201911079014A CN 110777700 A CN110777700 A CN 110777700A
- Authority
- CN
- China
- Prior art keywords
- plate
- blocking block
- baffle
- negative poisson
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
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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
- E01F15/0438—Spacers between rails and posts, e.g. energy-absorbing means
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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
- E01F15/0484—Installing; Repairing; Adjusting
Abstract
The invention discloses a multistage energy-consumption highway anti-collision device which comprises a stand column, a rectangular anti-blocking block, a negative Poisson ratio anti-blocking block, a double-wave-shaped guard plate and long and short connecting bolts, wherein the lateral rigidity of the rectangular anti-blocking block is smaller than that of the negative Poisson ratio anti-blocking block, and the rectangular anti-blocking block corresponds to the protection energy consumption of small-sized vehicles and large-sized vehicles during collision respectively. When a small vehicle is impacted, the rectangular anti-blocking block is subjected to elastic-plastic deformation, so that impact energy is consumed, and the corrugated plate and driving safety are protected; when a large-sized vehicle is impacted, the rectangular anti-blocking block is extremely easy to crush by the impact, the energy consumption is limited, the energy is consumed mainly by the elastic-plastic deformation of the negative Poisson ratio anti-blocking block, and meanwhile, the negative Poisson ratio anti-blocking block can be strengthened by compression, so that the impact of the vehicle is effectively borne. Through the arrangement of the double anti-blocking blocks, particularly the arrangement of the anti-blocking blocks with negative Poisson's ratio, the anti-collision device has the characteristics of small initial rigidity, strengthened rigidity, high bearing capacity, high energy consumption and the like, particularly has the characteristic of multi-stage energy consumption, and can simultaneously realize effective protection on the impact of large and small vehicles.
Description
Technical Field
The invention relates to a multistage energy-consumption highway anti-collision device, and belongs to the field of highway safety anti-collision and disaster reduction.
Background
The traffic volume of domestic roads is increasing day by day, the speed of a motor vehicle is increasing fast, the hidden danger of traffic accidents is increasing, and the number of traffic accidents also tends to increase. Road traffic accidents are mainly caused by direct collisions of cars with protective equipment on both sides of the road and are associated with the cars breaking through the guardrails. Therefore, the traffic flow is increased, the traffic safety of the highway is protected under the premise that the design speed per hour is greatly increased, and the function of the anti-collision guardrail is particularly prominent. A good crash barrier should have a low stiffness and sufficient strength to ensure a sufficiently long cushioning time and also have sufficient energy dissipation characteristics.
At present, the wave-shaped guardrail plate is the most common anti-collision device for the road and mainly comprises an upright post, a wave-shaped guard plate and an anti-blocking block. When the automobile is impacted, the wave-shaped guardrail plate can effectively restrain the impact direction of the automobile, and meanwhile, part of energy is consumed through the plastic deformation of the wave-shaped guardrail plate and the anti-blocking block, so that the impact force of the automobile is reduced. The wave-shaped guardrail plate has good anti-collision advantages and is widely applied in recent years, but the following problems are also found in the long-term use process of the wave-shaped guardrail plate: the anti-blocking block is usually of a cavity structure, has small lateral rigidity and bearing capacity, is easy to be crushed by the impact of a large vehicle, and has limited energy consumption effect; after the lateral rigidity of the anti-blocking block is increased, the impact of a large-sized vehicle can be effectively resisted, the energy is consumed, and the impact protection of a small-sized vehicle can be influenced. The lateral rigidity and the energy consumption characteristics of the anti-blocking block of the existing corrugated guardrail plate are constant values, and the effective protection of large and small vehicles is difficult to realize at the same time.
Disclosure of Invention
The invention aims to provide a multi-stage energy-consumption road anti-collision device which can effectively solve the problems. The specific technical scheme is as follows:
a multi-stage energy-consumption highway anti-collision device is composed of a stand column, a rectangular anti-blocking block, a negative Poisson's ratio anti-blocking block, a double-waveform guard plate and long and short connecting bolts. Screw holes are reserved on the rectangular anti-blocking block and the front baffle and the rear baffle of the negative Poisson ratio anti-blocking block, and the front baffle of the negative Poisson ratio anti-blocking block is connected with the double-waveform guard plate through a short connecting bolt; the long connecting bolt rod respectively penetrates through a rear baffle screw hole of the negative Poisson ratio block, a front baffle screw hole and a rear baffle screw hole of the rectangular block and a reserved screw hole of the upright post, and the negative Poisson ratio block and the rectangular block are fixed at the top end of the upright post. In particular, a hole is reserved in the middle of the top plate cover and the middle bearing plate for fixing the device.
Particularly, the negative Poisson ratio block comprises a rear baffle, a rear side plate, a front baffle, a front side plate and an arc wing plate; screw holes are formed in the center positions of the front baffle and the rear baffle; the front and rear side plates are respectively welded on two sides of the front and rear baffles to form a front and a rear isosceles trapezoids; the two arc wing plates are welded on two sides of the trapezoidal body, the two trapezoidal bodies are connected into a ship-shaped cavity, and the center line of the cavity is vertical to the upright post; the front baffle is fixed with the bottom plate of the convex plate in the double-waveform guard plate, and the opening angle of the two front side plates is slightly larger than the included angle of the side plates of the convex plate in the double-waveform guard plate; the opening angle of the two rear side plates is smaller than that of the two front side plates; the radian of the arc-shaped wing plate is consistent with the inner arc of the convex plate of the edge of the double-corrugated protection plate, and the arc-shaped wing plate can be completely attached after certain deformation occurs.
Particularly, the rectangular anti-blocking block is a columnar cavity consisting of a front baffle, a rear baffle and two side baffles, and the center line of the column is parallel to the upright post; the rear baffle is provided with a cambered surface and is tightly attached to the outer side of the upright post; the front baffle and the side baffle are both planes; and screw holes are formed in the center positions of the front baffle and the rear baffle.
Particularly, the negative Poisson ratio anti-blocking block and the rectangular anti-blocking block are made of low-yield steel plates, and low-yield stainless steel plates and other alloy plates can also be adopted; the thickness of each plate of the negative Poisson ratio anti-blocking block is larger than that of each plate of the rectangular anti-blocking block.
Particularly, the front and rear trapezoidal bodies are respectively formed by welding a rear baffle plate, a rear side plate, a front baffle plate and a front side plate, or can be respectively pressed into the front and rear trapezoidal bodies by two long plates.
The invention has the beneficial effects that: the invention provides a multistage energy-consumption highway anti-collision device which is provided with two anti-blocking blocks with different lateral rigidities, namely a rectangular anti-blocking block and a negative poisson's ratio anti-blocking block, and particularly is provided with the negative poisson's ratio anti-blocking block which can be continuously strengthened along with impact extrusion. The rectangular anti-blocking block has small lateral rigidity, can generate elastic and plastic deformation when a small vehicle is impacted, consumes impact energy, and protects the corrugated plate and the driving safety; the negative Poisson ratio anti-block has larger lateral rigidity and is suitable for the energy consumption of large-sized vehicles during collision. When a large-sized vehicle is impacted, the rectangular anti-blocking block with small lateral rigidity firstly generates crushing deformation to consume partial energy; then, the negative Poisson ratio block generates elastic and plastic deformation, and further consumes energy; meanwhile, under the action of vehicle impact, the negative Poisson ratio anti-blocking block can be continuously stressed and strengthened, the lateral rigidity and the bearing capacity are gradually enhanced, and further good anti-collision characteristics of small rigidity, high bearing capacity, high energy consumption and the like are realized. Through the setting of two anti-stop blocks of different lateral rigidity, especially the setting of negative poisson's ratio anti-stop block, this device possesses multistage power consumption characteristic, can realize the effective protection to big, small-size vehicle striking simultaneously. Meanwhile, the two anti-blocking blocks are independent bodies, so that the replacement and maintenance of the individual damaged bodies are very convenient.
Drawings
FIG. 1 is a schematic view of the overall appearance of a bump guard according to the present invention;
FIG. 2 is a schematic view of a stop block of the anti-collision device according to the present invention;
fig. 3 is a schematic view showing the deformation of the collision preventing device of the present invention before and after a vehicle collision.
Reference numerals: 1 double-waveform guard plate; 2 negative poisson's ratio block; 3, a rectangular anti-blocking block; 4, vertical columns; 5 short connecting bolts; 6 long connecting bolts.
2.1 a rear side plate; 2.2 arc wing plate; 2.3 front baffle; 2.4 front side plate; 2.5 a rear baffle; 3.1 front baffle; 3.2 a rear baffle; 3.3 side dams.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings and examples, but not to limit the scope of the present invention.
Referring to fig. 1-3, the specific design scheme of this example is as follows:
the invention provides a multistage energy-consumption highway anti-collision device which comprises a double-waveform guard plate 1, a negative Poisson ratio anti-blocking block 2, a rectangular anti-blocking block 3, an upright post 4, a short connecting bolt 5 and a long connecting bolt 6.
Screw holes are reserved on the front baffle and the rear baffle of the rectangular anti-blocking block 3 and the negative Poisson's ratio anti-blocking block 2, and the front baffle of the negative Poisson's ratio anti-blocking block 2 is connected with the double-waveform guard plate 1 through a short connecting bolt 5; the long connecting bolt rod 6 respectively penetrates through a rear baffle screw hole of the negative Poisson ratio block 2, a front baffle screw hole and a rear baffle screw hole of the rectangular block 3 and a reserved screw hole of the upright post 4, and the negative Poisson ratio block 2 and the rectangular block 3 are fixed at the top end of the upright post 4.
The anti-blocking block 2 with the negative Poisson ratio consists of a rear baffle 2.5, a rear side plate 2.1, a front baffle 2.3, a front side plate 2.4 and an arc-shaped wing plate 2.2; screw holes are formed in the center positions of the front baffle 2.3 and the rear baffle 2.5; the number of the front side plate 2.4 and the number of the rear side plate 2.1 are two respectively, and the front side plate and the rear side plate are welded on two sides of the front baffle 2.3 and the rear baffle 2.5 respectively to form a front isosceles trapezoid body and a rear isosceles trapezoid body; the two arc wing plates 2.2 are welded on two sides of the trapezoidal body, the two trapezoidal bodies are connected into a ship-shaped cavity, and the center line of the cavity is vertical to the upright post; the front baffle 2.3 is fixed with the bottom plate of the convex plate in the double-waveform guard plate 1, and the opening angle of the two front side plates 2.4 is slightly larger than the included angle of the side plates of the convex plate in the double-waveform guard plate 1; the opening angle of the two rear side plates 2.1 is smaller than that of the two front side plates 2.4; the radian of the arc wing plate 2.2 is consistent with the inner arc of the convex plate at the edge of the double-waveform guard plate 1, and the arc wing plate can be completely attached after certain deformation occurs.
The rectangular anti-blocking block 3 is a columnar cavity consisting of a front baffle 3.1, a rear baffle 3.2 and two side baffles 3.3, and the center line of the column body is parallel to the upright post 4; the rear baffle 3.2 is provided with a cambered surface and is tightly attached to the outer side of the upright post 4; the front baffle 3.1 and the side baffles 3.3 are both planes; and screw holes are formed in the center positions of the front baffle and the rear baffle.
The negative Poisson ratio anti-blocking block 2 and the rectangular anti-blocking block 3 are both made of low-yield steel plates, and low-yield stainless steel plates and other alloy plates can also be adopted; the thickness of each plate of the negative Poisson ratio block 2 is larger than that of each plate of the rectangular block 3.
The front and rear trapezoidal bodies are respectively formed by welding a rear baffle 2.5, a rear side plate 2.1, a front baffle 2.3 and a front side plate 2.4, or can be respectively pressed into the front and rear trapezoidal bodies by two long plates.
In the above embodiment, the anti-collision device is provided with the rectangular anti-blocking block and the negative poisson's ratio anti-blocking block with different lateral rigidities, and particularly, the negative poisson's ratio anti-blocking block which can be continuously strengthened along with impact extrusion is arranged.
The technical principle is as follows: when a vehicle collides with the guardrail, the transmission path of the collision force is automobile → double-wave guard plate 1 → negative Poisson's ratio block 3 → rectangular block 2 → upright post 4, and finally to the ground. The rectangular anti-blocking block 2 is provided with smaller lateral rigidity, can generate elastic and plastic deformation when a small vehicle is impacted, consumes impact energy, and protects the corrugated plate and the driving safety. When a large-sized vehicle impacts the guardrail, the rectangular anti-blocking block 2 is extremely easy to be crushed by impact, and the vehicle can quit working after consuming part of energy. At this time, the effective transmission path of the impact force is automobile → double-wave guard plate 1 → negative poisson's ratio block 3 → pillar 4 → ground. After the negative Poisson ratio anti-blocking block is impacted and extruded, elastic and plastic deformation can occur firstly, and energy is further consumed; when the front baffle 2.3 is pressed and moves backwards, the rear side plate 2.1, the front side plate 2.4 and the arc wing plate 2.2 can be caused to rotate inwards, so that the front side plate 2.4 and the arc wing plate 2.2 can be caused to move forwards, the negative poisson's ratio resistance block is strengthened and extruded to the wave-shaped guard plate 1, the integral lateral rigidity and the energy consumption efficiency of the anti-collision device can be effectively improved, and finally, the negative poisson's ratio resistance block is crushed after being continuously extruded by impact, and the anti-collision device can quit the work after consuming energy again. Therefore, through the arrangement of the two anti-blocking blocks with different lateral rigidity, particularly the arrangement of the anti-blocking block with the negative Poisson ratio, the multi-stage anti-collision energy consumption design of the road anti-collision device can be realized, and meanwhile, the effective protection of large and small vehicles is realized.
The applicant states that the present invention is illustrated by the above embodiments to describe the structure of the apparatus of the present invention, but the present invention is not limited to the above embodiments, i.e. it does not mean that the present invention must rely on the above methods and structures to be implemented. It should be understood by those skilled in the art that any modifications to the present invention, the addition of equivalent alternatives to the embodiments of the present invention and steps, the selection of specific modes, etc., are within the scope of the present invention and the disclosure.
The present invention is not limited to the above embodiments, and all embodiments adopting the similar structure and method to achieve the object of the present invention are within the protection scope of the present invention.
Claims (5)
1. A multi-stage energy-consumption highway anti-collision device is characterized by comprising an upright post, a rectangular anti-blocking block, a negative Poisson's ratio anti-blocking block, a double-waveform guard plate, a long connecting bolt and a short connecting bolt, wherein screw holes are reserved on front and rear baffles of the rectangular anti-blocking block and the negative Poisson's ratio anti-blocking block, and the front baffle of the negative Poisson's ratio anti-blocking block is connected with the double-waveform guard plate through the short connecting bolt; the long connecting bolt rod respectively penetrates through a rear baffle screw hole of the negative Poisson ratio block, a front baffle screw hole and a rear baffle screw hole of the rectangular block and a reserved screw hole of the upright post, and the negative Poisson ratio block and the rectangular block are fixed at the top end of the upright post.
2. The apparatus of claim 1, wherein said negative poisson's ratio block comprises a rear baffle, a rear plate, a front baffle, a front plate and a curved wing; screw holes are formed in the center positions of the front baffle and the rear baffle; the front and rear side plates are respectively welded on two sides of the front and rear baffles to form a front and a rear isosceles trapezoids; the two arc wing plates are welded on two sides of the trapezoidal body, the two trapezoidal bodies are connected into a ship-shaped cavity, and the center line of the cavity is vertical to the upright post; the front baffle is fixed with the bottom plate of the convex plate in the double-waveform guard plate, and the opening angle of the two front side plates is slightly larger than the included angle of the side plates of the convex plate in the double-waveform guard plate; the opening angle of the two rear side plates is smaller than that of the two front side plates; the radian of the arc-shaped wing plate is consistent with the inner arc of the convex plate of the edge of the double-corrugated protection plate, and the arc-shaped wing plate can be completely attached after certain deformation occurs.
3. The device of claim 1, wherein the rectangular block is a cylindrical cavity consisting of a front baffle, a rear baffle and two side baffles, and the center line of the cylinder is parallel to the upright; the rear baffle is provided with a cambered surface and is tightly attached to the outer side of the upright post; the front baffle and the side baffle are both planes; and screw holes are formed in the center positions of the front baffle and the rear baffle.
4. The device of claim 1, wherein the negative poisson's ratio block and the rectangular block are made of low-yield steel plates, low-yield stainless steel plates and other alloy plates; the thickness of each plate of the negative Poisson ratio anti-blocking block is larger than that of each plate of the rectangular anti-blocking block.
5. The device of claim 2, wherein the front and rear trapezoidal bodies are respectively formed by welding the rear baffle plate, the rear side plate, the front baffle plate and the front side plate, or formed by pressing two long plates into the front and rear trapezoidal bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079014.6A CN110777700A (en) | 2019-11-07 | 2019-11-07 | Multistage energy consumption highway buffer stop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079014.6A CN110777700A (en) | 2019-11-07 | 2019-11-07 | Multistage energy consumption highway buffer stop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110777700A true CN110777700A (en) | 2020-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911079014.6A Pending CN110777700A (en) | 2019-11-07 | 2019-11-07 | Multistage energy consumption highway buffer stop |
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| Country | Link |
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| CN (1) | CN110777700A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323960A (en) * | 2022-07-11 | 2022-11-11 | 泉州装备制造研究所 | Urban traffic protective guard |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2155781A1 (en) * | 1999-05-10 | 2001-05-16 | Urquijo Juan Antonio Alberdi | Improved device for road safety barriers. |
| CN201372416Y (en) * | 2009-01-08 | 2009-12-30 | 林淑慧 | Guardrail fixing structure |
| CN202227294U (en) * | 2011-08-04 | 2012-05-23 | 北京道从交通科技有限公司 | Reinforcement structure for wave-shaped beam guardrail board |
| CN103573891A (en) * | 2013-11-14 | 2014-02-12 | 马正东 | Negative Poisson ratio structural component |
| CN206157629U (en) * | 2016-10-27 | 2017-05-10 | 广东省交通规划设计研究院股份有限公司 | Wave form roof beam anticollision barrier |
| CN108221911A (en) * | 2018-03-06 | 2018-06-29 | 山东大学 | A kind of TGXG with Negative poisson's ratio and preparation method thereof |
-
2019
- 2019-11-07 CN CN201911079014.6A patent/CN110777700A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2155781A1 (en) * | 1999-05-10 | 2001-05-16 | Urquijo Juan Antonio Alberdi | Improved device for road safety barriers. |
| CN201372416Y (en) * | 2009-01-08 | 2009-12-30 | 林淑慧 | Guardrail fixing structure |
| CN202227294U (en) * | 2011-08-04 | 2012-05-23 | 北京道从交通科技有限公司 | Reinforcement structure for wave-shaped beam guardrail board |
| CN103573891A (en) * | 2013-11-14 | 2014-02-12 | 马正东 | Negative Poisson ratio structural component |
| CN206157629U (en) * | 2016-10-27 | 2017-05-10 | 广东省交通规划设计研究院股份有限公司 | Wave form roof beam anticollision barrier |
| CN108221911A (en) * | 2018-03-06 | 2018-06-29 | 山东大学 | A kind of TGXG with Negative poisson's ratio and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323960A (en) * | 2022-07-11 | 2022-11-11 | 泉州装备制造研究所 | Urban traffic protective guard |
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Application publication date: 20200211 |
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