CN103498435B - A kind of road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite - Google Patents
A kind of road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite Download PDFInfo
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- CN103498435B CN103498435B CN201310503490.2A CN201310503490A CN103498435B CN 103498435 B CN103498435 B CN 103498435B CN 201310503490 A CN201310503490 A CN 201310503490A CN 103498435 B CN103498435 B CN 103498435B
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Abstract
The invention discloses a kind of road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite, be mainly used in the security protection of highway drive test.Be made up of column, anchor ear, guardrail board, energy-absorbing liner plate, bolt, anchor ear obvolvent is on column, column is bolted on the center of energy-absorbing liner plate, guardrail board two ends arrange some bolts hole respectively, energy-absorbing liner plate two ends arrange some bolts hole respectively, and guardrail board is bolted in energy-absorbing liner plate two ends.Described guardrail board and energy-absorbing liner plate adopt made of ultra-high molecular weight polyethylene carbon fiber composite to make, and this made of ultra-high molecular weight polyethylene carbon fiber composite as matrix by superhigh molecular weight polyethylene material, is mixed in the base and adds carbon fiber.Application attestation: when the active force of body of a motor car acts in guardrail board; by energy-absorbing effect and the shock resistance of guardrail board and connecting lining plate self made of ultra-high molecular weight polyethylene carbon fiber composite excellence; vehicle body active force is converted to potential energy and interior energy; impact force is discharged; serve good energy dissipating energy-absorbing effect, and then reach the object of the protection vehicles and occupant safety.
Description
Technical field
The present invention relates to a kind of road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite, be mainly used in the security protection of highway drive test, belong to highway safety protective equipment field.
Background technology
Conventional road corrugated guardrail is made up of column and Q235 carbon steel corrugated guardrail plate, be limited to structure and material, there is the following shortcoming being difficult to overcome in conventional road corrugated guardrail: when (1) automobile and conventional road guardrail collide, because the distortion relaxation time of guardrail steel plate is shorter, acceleration is comparatively large, larger to the impact injury of vehicle and passenger; (2) conventional road breast board is heavy, and production, transport, installation are all inconvenient; (3) the easy corrosion of conventional road guardrail, guardrail is costly zinc-plated, maintenance and maintenance workload large; (4) mainly to adopt galvanizing by dipping technology to carry out anticorrosion for conventional road guardrail, and environment pollution is serious.
Simultaneously, superhigh molecular weight polyethylene material is adopted to manufacture highway barrier, cohesiveness is poor, creep is obvious, and impact strength is not enough, be difficult to separately as highway barrier materials'use, as application number is: 200510117288.1, name is called " a kind of ultra-high molecular weight polyethylene highway barrier material and manufacture method thereof ".Although adopt carbon fibre material excellent in cushion effect, have good cohesiveness and creep resistance, fatigue durability and toughness are not good, and expensive.
Summary of the invention
The object of the invention is to the deficiency overcoming existing highway guardrail, a kind of road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite is provided, it is strong that this highway barrier has impact resistance, weight is relatively light, sight line inducing is strong, safe and reliable, stability is high, energy-conserving and environment-protective, effectively reduces road traffic accident casualties and property loss.
Road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite object of the present invention is completed by having structure: highway barrier is by column (4), anchor ear (5), guardrail board (1), energy-absorbing liner plate (3), bolt (6) forms, anchor ear (5) obvolvent is on column (4), column (4) is connected on the center of energy-absorbing liner plate (3) by bolt (6), guardrail board (1) two ends arrange some bolts hole (2) respectively, energy-absorbing liner plate (3) two ends arrange some bolts hole (2) respectively, guardrail board (1) is connected to energy-absorbing liner plate (3) two ends by bolt (6).
Described energy-absorbing liner plate (3) is in Ω shape or convex; Described guardrail board 1 arcuately.
Described guardrail board (1) and energy-absorbing liner plate (3) adopt made of ultra-high molecular weight polyethylene carbon fiber composite to make, and this made of ultra-high molecular weight polyethylene carbon fiber composite as matrix by superhigh molecular weight polyethylene material, is mixed in the base and adds carbon fiber.
In described made of ultra-high molecular weight polyethylene carbon fiber composite, the component of ultra-high molecular weight polyethylene and carbon fiber is: molecular weight be more than 2,500,000 ultra-high molecular weight polyethylene percent by volume be 50% ~ 80%, carbon fiber percent by volume is 20% ~ 50%.
Operating principle: when body of a motor car collides guardrail board position in highway barrier; by energy-absorbing effect and the shock resistance of guardrail board 1 and connecting lining plate 3 self made of ultra-high molecular weight polyethylene carbon fiber composite excellence; be potential energy and interior energy by the part impact force power conversion of vehicle body force position; impact force part is allowed to be discharged; thus play good energy dissipating energy-absorbing effect, reach the goal of the invention of protection automobile and occupant safety.
The present invention has low energy consumption, low stain, cohesiveness and creep resistance good, toughness is strong, have high-tensile, high elongation at tear concurrently, have good energy-absorbing effect and high deformation relaxation performance, strong, the safe and reliable novel road guardrail of sight line inducing has Great significance and economic worth.
Accompanying drawing explanation
Fig. 1 is the arc guardrail board top view of made of ultra-high molecular weight polyethylene carbon fiber composite of the present invention.
The A-A directional profile figure that Fig. 2 is the arc guardrail board of made of ultra-high molecular weight polyethylene carbon fiber composite shown in Fig. 1.
Fig. 3 is the top view of made of ultra-high molecular weight polyethylene carbon fiber composite energy-absorbing liner plate of the present invention.
Fig. 4 is the energy-absorbing of made of ultra-high molecular weight polyethylene carbon fiber composite shown in Fig. 3 liner plate B-B directional profile figure.
Fig. 5 is road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite using state schematic diagram of the present invention.
Fig. 6 is the energy tendency chart of common (tradition) carbon steel corrugated guardrail.
Fig. 7 is the energy tendency chart of the composite material bow-shaped guardrail of the present invention.
In figure, 1 is guardrail board, and 2 is screwed hole, and 3 is energy-absorbing liner plate, and 4 is column, and 5 is that anchor ear, 6 is for bolt.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Supra polymer road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite is formed by column, anchor ear, guardrail board, energy-absorbing liner plate, bolt, wherein anchor ear obvolvent is on column, column is bolted on the center of energy-absorbing liner plate, guardrail board two ends arrange some bolts hole respectively, energy-absorbing liner plate two ends arrange some bolts hole respectively, and guardrail board is bolted in energy-absorbing liner plate two ends.
Described guardrail board and energy-absorbing liner plate all adopt made of ultra-high molecular weight polyethylene carbon fiber composite to make, and described energy-absorbing liner plate (3) is in convex.This made of ultra-high molecular weight polyethylene carbon fiber composite as matrix by superhigh molecular weight polyethylene material, is mixed in the base and adds carbon fiber.
In described made of ultra-high molecular weight polyethylene carbon fiber composite, the component of ultra-high molecular weight polyethylene and carbon fiber is: molecular weight be more than 2,500,000 ultra-high molecular weight polyethylene percent by volume be 50% ~ 80%, carbon fiber percent by volume is 20% ~ 50%.
embodiment 1:
As shown in Figure 5, comprise column 4, anchor ear 5, arc guardrail board 1, energy-absorbing liner plate 3, bolt 6 form supra polymer road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite, anchor ear 5 obvolvent is on column 4, column 4 is connected on the center of energy-absorbing liner plate 3 by bolt 6, arc guardrail board 1 two ends arrange six bolts hole 2 respectively, energy-absorbing liner plate 3 two ends arrange six bolts hole, 2, two pieces of arc guardrail board 1 respectively and are connected to energy-absorbing liner plate 3 two ends by bolt 6.
Above-mentioned arc guardrail board 1 and energy-absorbing liner plate 3 all adopt made of ultra-high molecular weight polyethylene carbon fiber composite to make, this made of ultra-high molecular weight polyethylene carbon fiber composite by superhigh molecular weight polyethylene material as matrix, mix in the base and add carbon fiber, the component of ultra-high molecular weight polyethylene and carbon fiber is: molecular weight be more than 2,500,000 ultra-high molecular weight polyethylene percent by volume be 50%, carbon fiber percent by volume is 50%.
Arc guardrail board 1 length is 200 centimetres, and width is 31 centimetres, and maximum height is 15 centimetres; In order to make to connect closely between two pieces of arc guardrail board 1, and good energy dissipating cushioning effect can be played, the energy-absorbing liner plate 3 connected is made into Ω shape.
embodiment 2:
Supra polymer road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite, substantially the same manner as Example 1, difference is, arc guardrail board 1 two ends arrange four bolts hole 2 respectively, energy-absorbing liner plate 3 two ends arrange four bolts hole 2 respectively, arc guardrail board 1 and energy-absorbing liner plate 3 adopt made of ultra-high molecular weight polyethylene carbon fiber composite to make, this made of ultra-high molecular weight polyethylene carbon fiber composite by superhigh molecular weight polyethylene material as matrix, mix in the base and add carbon fiber, the component of ultra-high molecular weight polyethylene and carbon fiber is: molecular weight be more than 2,500,000 ultra-high molecular weight polyethylene percent by volume be 80%, carbon fiber percent by volume is 20%.
embodiment 3:
Supra polymer road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite, substantially the same manner as Example 1, difference is, arc guardrail board 1 two ends arrange eight bolts hole 2 respectively, energy-absorbing liner plate 3 two ends arrange eight bolts hole 2 respectively, arc guardrail board 1 and energy-absorbing liner plate 3 adopt made of ultra-high molecular weight polyethylene carbon fiber composite to make, this made of ultra-high molecular weight polyethylene carbon fiber composite by superhigh molecular weight polyethylene material as matrix, mix in the base and add carbon fiber, the component of ultra-high molecular weight polyethylene and carbon fiber is: molecular weight be more than 2,500,000 ultra-high molecular weight polyethylene percent by volume be 70%, carbon fiber percent by volume is 30%.
According to " freeway guardrail security performance evaluation standard " (JTG/TF83-01-2004) impact conditions, with 1.5 tons of kerb weight pony cars, 100 kilometers/hour, 20 ° of collision angles carry out crash tests to traditional highway Q235 carbon steel corrugated beam barrier and made of ultra-high molecular weight polyethylene carbon fiber composite bow beam guardrail board of the present invention respectively and draw following several main energetic tendency chart, see Fig. 6 and Fig. 7.
Due to impact conditions uniformity, from Fig. 6 and Fig. 7, initial total energy is the kinetic energy of 5.74e+8 when all deriving from vehicle collision, after collision starts, due to elastoplasticity speciality and the elongation restriction of carbon steel, the decay of kinetic energy obviously experienced by two stages as seen from Figure 6:
collision 0-0.227 second is elastic deformation,
be plastic deformation after 0.227 second, after entering plastic deformation, anti-impact force and energy-absorbing effect weaken; But due to elasticoviscous property speciality and the high elongation of composite material.The decay of kinetic energy remains mild property and continuation preferably as seen from Figure 7, does not occur the flex point of carbon steel.
Shock resistance and energy-absorbing effect are as following table:
As seen from table, before 0.227s, carbon steel belongs to elastic deformation, and the conversion effect of interior energy and composite material are suitable, but due to the characteristic of composite material, absorbs more sliding interface energy, so the consumption rate carbon steel material of kinetic energy is more; Between 0.227-0.357s, carbon steel enters plastic deformation, shock resistance, energy-absorbing effect obviously weaken, and cause kinetic energy consumption to reduce, and composite material interior can transform and sliding interface energy absorption on be better than carbon steel material, make kinetic energy obtain continuing to consume, tend to be steady when 0.357s; After 0.357s, composite material energy variation is little, and carbon steel material also has certain change, but in the consumption of kinetic energy not and composite material consume many, this mainly has benefited from the consumption of composite material on sliding interface energy; Finally, due to elasticoviscous property speciality and the higher tensile strength of composite material, in knock-on displacement deformation, the deformational displacement of 1/5 is decreased than carbon steel material.
Traditional road waved guardrail mainly adopts the manufacture of Q235 carbon steel, and its density is 7.85g/cm
3, yield strength is 235MPa, and modulus of elasticity is 200GPa, and tensile strength is about 370MPa, and elongation at break is about 22.
Road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite density range of the present invention is: 1.12 ~ 1.24g/cm
3, tensile strength reaches 4053MPa, and modulus of elasticity is 210GPa, and fracture elongation scope is: 50% ~ 150%.
Compared with other composite materials, it is stronger that the present invention has impact resistance as highway barrier, and energy-absorbing effect is better, and resistance to chemical attack, environmental protection, can reuse, and after large-scale production, its cost is suitable with traditional corrugated guardrail price.
Claims (3)
1. a road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite, it is characterized in that: highway barrier is made up of column (4), anchor ear (5), guardrail board (1), energy-absorbing liner plate (3), bolt (6), anchor ear (5) obvolvent is on column (4), column (4) is connected on the center of energy-absorbing liner plate (3) by bolt (6), guardrail board (1) two ends arrange some bolts hole (2) respectively, energy-absorbing liner plate (3) two ends arrange some bolts hole (2) respectively, and guardrail board (1) is connected to energy-absorbing liner plate (3) two ends by bolt (6);
Described energy-absorbing liner plate (3) is in Ω shape, convex;
Described guardrail board (1) arcuately.
2. the road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite according to claim, it is characterized in that: described guardrail board (1) and energy-absorbing liner plate (3) adopt made of ultra-high molecular weight polyethylene carbon fiber composite to make, this made of ultra-high molecular weight polyethylene carbon fiber composite as matrix by superhigh molecular weight polyethylene material, is mixed in the base and adds carbon fiber.
3. road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite according to claim 2, it is characterized in that: in described made of ultra-high molecular weight polyethylene carbon fiber composite, the component of ultra-high molecular weight polyethylene and carbon fiber is: molecular weight be more than 2,500,000 ultra-high molecular weight polyethylene percent by volume be 50% ~ 80%, carbon fiber percent by volume is 20% ~ 50%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310503490.2A CN103498435B (en) | 2013-10-23 | 2013-10-23 | A kind of road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310503490.2A CN103498435B (en) | 2013-10-23 | 2013-10-23 | A kind of road guardrail made of ultra-high molecular weight polyethylene carbon fiber composite |
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| CN103498435A CN103498435A (en) | 2014-01-08 |
| CN103498435B true CN103498435B (en) | 2016-02-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109965437A (en) * | 2017-12-28 | 2019-07-05 | 洛阳尖端技术研究院 | A kind of helmet and its preparation method and application |
| CN110042786A (en) * | 2019-04-25 | 2019-07-23 | 张卫兵 | Composite material backplate for road guard |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654745A (en) * | 2005-03-11 | 2005-08-17 | 江苏双良复合材料有限公司 | Road guard-rail made of composite material |
| CN1958274A (en) * | 2005-11-03 | 2007-05-09 | 肖久梅 | Material of polyethylene in super high molecular weight for obstruction guard of highway, and fabricating method |
| JP4095880B2 (en) * | 2002-10-31 | 2008-06-04 | 日鐵住金建材株式会社 | Guard fence with wooden beam |
| CN202073058U (en) * | 2011-04-15 | 2011-12-14 | 蔡文学 | Small upright column device for expressway guard rail |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007031986A (en) * | 2005-07-25 | 2007-02-08 | Satoru Minamihata | Safety guard rail |
| JP5822357B2 (en) * | 2012-10-18 | 2015-11-24 | 豊島 勝範 | Guardrail |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4095880B2 (en) * | 2002-10-31 | 2008-06-04 | 日鐵住金建材株式会社 | Guard fence with wooden beam |
| CN1654745A (en) * | 2005-03-11 | 2005-08-17 | 江苏双良复合材料有限公司 | Road guard-rail made of composite material |
| CN1958274A (en) * | 2005-11-03 | 2007-05-09 | 肖久梅 | Material of polyethylene in super high molecular weight for obstruction guard of highway, and fabricating method |
| CN202073058U (en) * | 2011-04-15 | 2011-12-14 | 蔡文学 | Small upright column device for expressway guard rail |
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Granted publication date: 20160210 Termination date: 20211023 |