EP1799915B1 - Resin guardrail - Google Patents

Resin guardrail Download PDF

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Publication number
EP1799915B1
EP1799915B1 EP04808206A EP04808206A EP1799915B1 EP 1799915 B1 EP1799915 B1 EP 1799915B1 EP 04808206 A EP04808206 A EP 04808206A EP 04808206 A EP04808206 A EP 04808206A EP 1799915 B1 EP1799915 B1 EP 1799915B1
Authority
EP
European Patent Office
Prior art keywords
base body
guardrail
resin
guard plate
ribs
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.)
Not-in-force
Application number
EP04808206A
Other languages
German (de)
French (fr)
Other versions
EP1799915A4 (en
EP1799915A1 (en
Inventor
Won-Sik Chu
Cheol Yu
Soon-Yi Yoo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Han Boo-Young
Lee Kyu Cheol
WOORIELTECH Co Ltd
Original Assignee
Han Boo-Young
Lee Kyu Cheol
WOORIELTECH Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Han Boo-Young, Lee Kyu Cheol, WOORIELTECH Co Ltd filed Critical Han Boo-Young
Publication of EP1799915A1 publication Critical patent/EP1799915A1/en
Publication of EP1799915A4 publication Critical patent/EP1799915A4/en
Application granted granted Critical
Publication of EP1799915B1 publication Critical patent/EP1799915B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • E01F15/0453—Rails of materials other than metal or concrete, e.g. wood, plastics; Rails of different materials, e.g. rubber-faced metal profiles, concrete-filled steel tubes

Definitions

  • the present invention relates to a resin guardrail, and more particularly, to a guardrail, wherein a guard plate is made of a resin to substantially have a honeycomb structure in cross section so that raw materials can be saved and the guardrail has a strength comparing favorably with that of a metallic guardrail, an impact to be applied to a driver upon collision of a vehicle against the guardrail can be maximally suppressed due to elasticity resulting from the properties of the material or the honeycomb structure, and driver's view can be secured upon driving at night by mixing a fluorescent material upon manufacture of the guard plate so that the guard plate emits light at night.
  • Resin guardrails are known from EP-A-540 012 .
  • a guardrail is installed at the shoulder or center of a road to prevent a vehicle from coming off the road or to indicate the boundary of the road. It is required that upon collision of a vehicle against such a guardrail, the guardrail have a strength enough to prevent the vehicle from coming off a road as well as a function of absorbing an impact applied to the vehicle.
  • a conventional guardrail has a simple structure in which a metallic guard plate 2 is coupled to a guardrail post 1 and there is no additional shock-absorbing means, as shown in Fig. 1 , a large impact is applied to a vehicle that has collided against the guardrail, resulting in great damage to human life.
  • a guard plate of the conventional guardrail is made of a metal, there is a problem in that it may corrode during long-term use thereof in external environments. Therefore, the guard plate should be replaced at proper timing, resulting in increased maintenance costs.
  • a metallic guard plate is generally pressed in the form of a wave to reinforce its strength or to retain a certain degree of elasticity. This becomes a cause of a rise in costs due to increases in the number of manufacturing processes.
  • a primary object of the present invention is to provide a resin guardrail, wherein a guard plate of the guardrail is manufactured by extruding a resin so that it can be mass-produced, and the guard plate can also be manufactured into a desired shape without an additional process, resulting in reduced production costs.
  • Another object of the present invention is to provide a resin guardrail, wherein the inner structure of the guardrail is in the form of a honeycomb to have a superior strength in spite of the use of a resin, and a shock-absorbing capability is retained due to properties of the material itself in addition to such inner structure without supplement of an additional shock-absorbing means.
  • a further object of the present invention is to provide a resin guardrail, wherein a guard plate of the guardrail contains a fluorescent material so that it can be easily identified at night.
  • a resin guardrail including a post, a plurality of guard plates coupled to the post, and connection members for connecting the guard plates to one another.
  • Each of the guard plates of the guardrail is manufactured through extrusion.
  • the guard plate comprises a hollow base body that takes the shape of a wave in cross section to include a rear ridge protruding rearward and having a flat portion and a front ridge protruding forward.
  • the flat portion of the rear ridge and the front ridge are formed with first and second fastening holes, respectively, and the base body has solid portions for reinforcing regions with the first and second fastening holes formed therein.
  • the guard plate further comprises wavy ribs that are positioned within a hollow portion of the base body to connect upper and lower ends of the base body to each other and have the same sectional shape as the base body; and alternately arranged horizontal ribs for establishing connection between the wavy ribs and between the wavy ribs and inner surfaces of the base body.
  • guard plate may be extruded using a mixture of a resin and a fluorescent material or noctilucent material.
  • the guard plate of the guardrail according to the present invention has a sufficient capability of preventing a vehicle from coming off a road and simultaneously maximally suppressing an impact applied to a driver upon collision of the vehicle against the guardrail since the guard plate has high strength and elasticity even while minimizing the amount of use of a resin as a raw material. Further, the guard plate has an advantage in that it assists in securing driver's view at night since a self-luminous or light-receiving material is mixed with the raw material.
  • Guard plate 100 Base body 110: Rear ridge 111: Flat portion 112: First fastening hole 120: Front ridge 121: Second fastening hole 130: Solid portion 140: Wavy rib 141: Horizontal rib
  • a guard plate that is a major part of a guardrail is made of a resin and has the following structure for reinforcing strength, which is a weak point of the resin, and enabling production thereof through extrusion.
  • each of the guard plates 10 has a hollow panel-like base body 100.
  • the base body takes the shape of a wave in cross section as a whole and has one ore more rear ridges 110 protruding rearward and one or more front ridges 120 protruding forward.
  • Each of the rear ridges 100 includes a flat portion 111.
  • the flat portion 111 is formed with one or more first fastening holes 112 for use in fastening the guard plate to the post 20 by means of screws.
  • Each of the front ridges 120 is formed with second fastening holes 121 for use in fastening the connection members to the guard plates.
  • solid portions 130 are provided at regions where the first and second fastening holes 112 and 121 are formed, in a longitudinal direction of the guard plate 10, thereby maintaining fastening strength.
  • a plurality of wavy ribs 140 are formed to connect upper and lower ends of the hollow portion.
  • Horizontal ribs 141 are also formed between adjacent wavy ribs and between the wavy ribs and inner walls of the base body.
  • the horizontal ribs 141 placed adjacent to each other in a fore and aft direction are arranged alternately so that a lattice configuration defined by the wavy ribs and the horizontal ribs becomes similar to a honeycomb configuration, thereby reinforcing the strength of the base body in a thickness direction. Therefore, the guard plate of the present invention has high strength by which it is prevented from being easily broken due to an impact applied thereto by a vehicle, and also has a shock-absorbing function resulting from lattice spaces 101 a defined by the wavy ribs and the horizontal ribs.
  • the guard plate upon manufacture of the guard plate, a proper amount of fluorescent material is mixed with a molten resin as a raw material, and stirring operations are performed several times to sufficiently mix the fluorescent material (or noctilucent material) with the resin. Then, the mixture is subjected to an extrusion operation. Accordingly, since the guard plate is made of the mixture of the fluorescent material or noctilucent material with the raw material, the guard plate emits light due to headlamps of a vehicle or provides self-luminescence using light, which has been absorbed in the daytime, at night. Thus, the guard plate assists in securing driver's view at night.
  • the post 20 can be made of a metal or resin. If the post is made of a resin, it is preferred that the post be insert-molded such that a metallic core 21 is embedded in the post to improve the strength thereof. It is also preferred that an anchor portion 22 to be positioned at a lower end of the post be made of a metal since it determines a force for supporting the post, and the anchor portion be then coupled to the post while penetrating through the post.
  • the guard plate of the guardrail according to the present invention has a sufficient capability of preventing a vehicle from coming off a road and simultaneously maximally suppressing an impact applied to a driver upon collision of the vehicle against the guardrail since the guard plate has high strength and elasticity even while minimizing the amount of use of a resin as a raw material. Further, the guard plate has an advantage in that it assists in securing driver's view at night since a self-luminous or light-receiving material is mixed with the raw material.

Abstract

The present invention relates to a resin guardrail including a post, a plurality of guard plates coupled to the post, and connection members for connecting the guard plates to one another. Each of the guard plates of the guardrail is manufactured through extrusion. The guard plate comprises a hollow base body that takes the shape of a wave in cross section to include a rear ridge protruding rearward and having a flat portion and a front ridge protruding forward. The flat portion of the rear ridge and the front ridge are formed with first and second fastening holes, respectively, and the base body has solid portions for reinforcing regions with the first and second fastening holes formed therein. The guard plate further comprises wavy ribs that are positioned within a hollow portion of the base body to connect upper and lower ends of the base body to each other and have the same sectional shape as the base body; and alternately arranged horizontal ribs for establishing connection between the wavy ribs and between the wavy ribs and inner surfaces of the base body.

Description

    TECHNICAL FIELD
  • The present invention relates to a resin guardrail, and more particularly, to a guardrail, wherein a guard plate is made of a resin to substantially have a honeycomb structure in cross section so that raw materials can be saved and the guardrail has a strength comparing favorably with that of a metallic guardrail, an impact to be applied to a driver upon collision of a vehicle against the guardrail can be maximally suppressed due to elasticity resulting from the properties of the material or the honeycomb structure, and driver's view can be secured upon driving at night by mixing a fluorescent material upon manufacture of the guard plate so that the guard plate emits light at night.
  • Resin guardrails are known from EP-A-540 012 .
    • BACKGROUND ART
  • Generally, a guardrail is installed at the shoulder or center of a road to prevent a vehicle from coming off the road or to indicate the boundary of the road. It is required that upon collision of a vehicle against such a guardrail, the guardrail have a strength enough to prevent the vehicle from coming off a road as well as a function of absorbing an impact applied to the vehicle.
  • However, since a conventional guardrail has a simple structure in which a metallic guard plate 2 is coupled to a guardrail post 1 and there is no additional shock-absorbing means, as shown in Fig. 1, a large impact is applied to a vehicle that has collided against the guardrail, resulting in great damage to human life.
  • Further, since a guard plate of the conventional guardrail is made of a metal, there is a problem in that it may corrode during long-term use thereof in external environments. Therefore, the guard plate should be replaced at proper timing, resulting in increased maintenance costs.
  • Moreover, a metallic guard plate is generally pressed in the form of a wave to reinforce its strength or to retain a certain degree of elasticity. This becomes a cause of a rise in costs due to increases in the number of manufacturing processes.
  • In addition, since such guardrails cannot be identified at night, accidents in which vehicles collide against the guardrails often occur. Recently, in order to prevent such accidents in advance, reflectors are installed on the guardrails to reflect light emitting from headlamps of vehicles. However, this causes additional expenses for the installation of the reflectors and thus increases a burden on costs.
    • DISCLOSURE OF INVENTION TECHNICAL PROBLEM
  • The present invention is conceived to solve the aforementioned problems in the prior art. A primary object of the present invention is to provide a resin guardrail, wherein a guard plate of the guardrail is manufactured by extruding a resin so that it can be mass-produced, and the guard plate can also be manufactured into a desired shape without an additional process, resulting in reduced production costs.
  • Another object of the present invention is to provide a resin guardrail, wherein the inner structure of the guardrail is in the form of a honeycomb to have a superior strength in spite of the use of a resin, and a shock-absorbing capability is retained due to properties of the material itself in addition to such inner structure without supplement of an additional shock-absorbing means.
  • A further object of the present invention is to provide a resin guardrail, wherein a guard plate of the guardrail contains a fluorescent material so that it can be easily identified at night.
    • TECHNICAL SOLUTION
  • According to the present invention for achieving the objects, there is provided a resin guardrail including a post, a plurality of guard plates coupled to the post, and connection members for connecting the guard plates to one another. Each of the guard plates of the guardrail is manufactured through extrusion. The guard plate comprises a hollow base body that takes the shape of a wave in cross section to include a rear ridge protruding rearward and having a flat portion and a front ridge protruding forward. The flat portion of the rear ridge and the front ridge are formed with first and second fastening holes, respectively, and the base body has solid portions for reinforcing regions with the first and second fastening holes formed therein. The guard plate further comprises wavy ribs that are positioned within a hollow portion of the base body to connect upper and lower ends of the base body to each other and have the same sectional shape as the base body; and alternately arranged horizontal ribs for establishing connection between the wavy ribs and between the wavy ribs and inner surfaces of the base body.
  • Further, the guard plate may be extruded using a mixture of a resin and a fluorescent material or noctilucent material.
    • ADVANTAGEOUS EFFECTS
  • The guard plate of the guardrail according to the present invention has a sufficient capability of preventing a vehicle from coming off a road and simultaneously maximally suppressing an impact applied to a driver upon collision of the vehicle against the guardrail since the guard plate has high strength and elasticity even while minimizing the amount of use of a resin as a raw material. Further, the guard plate has an advantage in that it assists in securing driver's view at night since a self-luminous or light-receiving material is mixed with the raw material.
    • BRIEF DESCRIPTION OF DRAWINGS
    • Fig. 1 is a view showing a configuration of a general guardrail.
    • Fig. 2 is an exploded perspective view of a resin guardrail according to the present invention.
    • Fig. 3 is a sectional view showing an assembled state of the resin guardrail of Fig. 2.
    <Explanation of reference numerals for designating main components in the drawings>
  • 10: Guard plate
    100: Base body 110: Rear ridge
    111: Flat portion 112: First fastening hole
    120: Front ridge 121: Second fastening hole
    130: Solid portion 140: Wavy rib
    141: Horizontal rib
    • BEST MODE FOR CARRYING OUT THE INVENTION
  • Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to Figs. 2 and 3 of the accompanying drawings.
  • As described above, a guard plate that is a major part of a guardrail is made of a resin and has the following structure for reinforcing strength, which is a weak point of the resin, and enabling production thereof through extrusion.
  • That is, in a guardrail including a post, a plurality of guard plates coupled to the post, and connection members for connecting the guard plates to one another, each of the guard plates 10 has a hollow panel-like base body 100. The base body takes the shape of a wave in cross section as a whole and has one ore more rear ridges 110 protruding rearward and one or more front ridges 120 protruding forward.
  • Each of the rear ridges 100 includes a flat portion 111. The flat portion 111 is formed with one or more first fastening holes 112 for use in fastening the guard plate to the post 20 by means of screws. Each of the front ridges 120 is formed with second fastening holes 121 for use in fastening the connection members to the guard plates. At this time, solid portions 130 are provided at regions where the first and second fastening holes 112 and 121 are formed, in a longitudinal direction of the guard plate 10, thereby maintaining fastening strength.
  • Further, within a hollow portion 101 of the base body 100, a plurality of wavy ribs 140 are formed to connect upper and lower ends of the hollow portion. Horizontal ribs 141 are also formed between adjacent wavy ribs and between the wavy ribs and inner walls of the base body.
  • At this time, the horizontal ribs 141 placed adjacent to each other in a fore and aft direction are arranged alternately so that a lattice configuration defined by the wavy ribs and the horizontal ribs becomes similar to a honeycomb configuration, thereby reinforcing the strength of the base body in a thickness direction. Therefore, the guard plate of the present invention has high strength by which it is prevented from being easily broken due to an impact applied thereto by a vehicle, and also has a shock-absorbing function resulting from lattice spaces 101 a defined by the wavy ribs and the horizontal ribs.
  • In addition, upon manufacture of the guard plate, a proper amount of fluorescent material is mixed with a molten resin as a raw material, and stirring operations are performed several times to sufficiently mix the fluorescent material (or noctilucent material) with the resin. Then, the mixture is subjected to an extrusion operation. Accordingly, since the guard plate is made of the mixture of the fluorescent material or noctilucent material with the raw material, the guard plate emits light due to headlamps of a vehicle or provides self-luminescence using light, which has been absorbed in the daytime, at night. Thus, the guard plate assists in securing driver's view at night.
  • Meanwhile, the post 20 can be made of a metal or resin. If the post is made of a resin, it is preferred that the post be insert-molded such that a metallic core 21 is embedded in the post to improve the strength thereof. It is also preferred that an anchor portion 22 to be positioned at a lower end of the post be made of a metal since it determines a force for supporting the post, and the anchor portion be then coupled to the post while penetrating through the post.
    • INDUSTRIAL APPLICABILITY
  • As described above, the guard plate of the guardrail according to the present invention has a sufficient capability of preventing a vehicle from coming off a road and simultaneously maximally suppressing an impact applied to a driver upon collision of the vehicle against the guardrail since the guard plate has high strength and elasticity even while minimizing the amount of use of a resin as a raw material. Further, the guard plate has an advantage in that it assists in securing driver's view at night since a self-luminous or light-receiving material is mixed with the raw material.

Claims (2)

  1. A resin guardrail including a post, a plurality of guard plates coupled to the post, and connection members for connecting the guard plates to one another, wherein:
    each of the guard plates is manufactured through extrusion to comprise:
    a hollow base body (100) taking the shape of a wave in cross section to include a rear ridge protruding rearward and having a flat portion and a front ridge (120) protruding forward, the flat portion of the rear ridge and the front ridge being formed with first and second fastening holes, respectively, the base body having solid portions (130) for reinforcing regions with the first and second fastening holes formed therein;
    wavy ribs (140) within a hollow portion of the base body to connect upper and lower ends of the base body to each other, the wavy ribs having the same sectional shape as the base body; and
    alternately arranged horizontal ribs (141) for establishing connection between the wavy ribs and between the wavy ribs and inner surfaces of the base body.
  2. The resin guardrail as claimed in claim 1, wherein the guard plate is extruded using a mixture of a resin and a fluorescent material or noctilucent material.
EP04808206A 2004-07-28 2004-11-23 Resin guardrail Not-in-force EP1799915B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040059066A KR100466411B1 (en) 2004-07-28 2004-07-28 Regin guardrail
PCT/KR2004/003029 WO2006011700A1 (en) 2004-07-28 2004-11-23 Resin guardrail

Publications (3)

Publication Number Publication Date
EP1799915A1 EP1799915A1 (en) 2007-06-27
EP1799915A4 EP1799915A4 (en) 2009-03-25
EP1799915B1 true EP1799915B1 (en) 2010-07-21

Family

ID=35786419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04808206A Not-in-force EP1799915B1 (en) 2004-07-28 2004-11-23 Resin guardrail

Country Status (9)

Country Link
US (1) US20080308779A1 (en)
EP (1) EP1799915B1 (en)
JP (1) JP4543082B2 (en)
KR (1) KR100466411B1 (en)
CN (1) CN100591852C (en)
AT (1) ATE474962T1 (en)
DE (1) DE602004028294D1 (en)
RU (1) RU2333309C1 (en)
WO (1) WO2006011700A1 (en)

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ES2315149B1 (en) * 2006-12-15 2010-03-16 Tomas Calvo Segado PROTECTION BAR FOR ALL ROADS OF CIRCULATION.
WO2008146969A1 (en) * 2007-05-25 2008-12-04 Ae-Dan Lee Safety guide rail
KR100897583B1 (en) 2008-07-25 2009-05-14 김주영 Safety guardrail for protecting driver and providing construction convenience
KR101378546B1 (en) * 2008-10-17 2014-03-27 김주영 Safety guardrail for protecting driver and providing construction convenience
CN102535367B (en) * 2012-01-19 2014-03-12 湖南金鸿科技工业股份有限公司 Ribbed guardrail plate
CN102535368B (en) * 2012-01-19 2014-03-12 湖南金鸿科技工业股份有限公司 Hollow guardrail plate
CN102900036B (en) * 2012-11-02 2017-02-08 卞乐平 Buffering anti-collision guardrail on expressway
KR101312933B1 (en) * 2012-11-12 2013-10-14 (주)제이피 Plastic guard rail
CN103835248B (en) * 2012-11-27 2017-06-27 合肥杰事杰新材料股份有限公司 A kind of expressway barrier and preparation method thereof
ES2503441B1 (en) * 2013-03-05 2015-07-09 Jose Manuel Sanchez De La Cruz IMPACT DETECTOR-SIGNALER IN ROAD PROTECTION BARRIERS
CN104213525B (en) * 2013-05-30 2016-12-28 陕西天地筑基新材料科技有限公司 A kind of composite material intelligent type freeway guardrail
CN105908661B (en) * 2016-05-31 2018-11-06 王翔 A kind of Shockproof corrosion resistant expressway barrier
CN106192816B (en) * 2016-08-22 2019-01-01 李袁宗 A kind of anticollision freeway guardrail
KR101738549B1 (en) * 2016-12-13 2017-06-08 (주)카리스가드레일 Plastic Guard-Rail
CN108811504A (en) 2017-03-03 2018-11-13 科力斯护栏株式会社 plastic guardrail
CN109868774A (en) * 2019-02-17 2019-06-11 张明霞 Device is blocked in a kind of highway anticollision
KR102024543B1 (en) 2019-07-23 2019-09-24 주식회사 카리스 Resin Guardrail

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Also Published As

Publication number Publication date
CN100591852C (en) 2010-02-24
US20080308779A1 (en) 2008-12-18
CN101023222A (en) 2007-08-22
JP2008508452A (en) 2008-03-21
JP4543082B2 (en) 2010-09-15
EP1799915A4 (en) 2009-03-25
ATE474962T1 (en) 2010-08-15
EP1799915A1 (en) 2007-06-27
RU2333309C1 (en) 2008-09-10
WO2006011700A1 (en) 2006-02-02
KR100466411B1 (en) 2005-01-13
DE602004028294D1 (en) 2010-09-02

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