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EP2573270A1 - Barrière en béton doté d'un système de protection pour motocyclistes - Google Patents

Barrière en béton doté d'un système de protection pour motocyclistes Download PDF

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Publication number
EP2573270A1
EP2573270A1 EP11380075A EP11380075A EP2573270A1 EP 2573270 A1 EP2573270 A1 EP 2573270A1 EP 11380075 A EP11380075 A EP 11380075A EP 11380075 A EP11380075 A EP 11380075A EP 2573270 A1 EP2573270 A1 EP 2573270A1
Authority
EP
European Patent Office
Prior art keywords
fold
sector
concrete barrier
metal
section
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.)
Withdrawn
Application number
EP11380075A
Other languages
German (de)
English (en)
Inventor
Juan José María González Uriarte
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP11380075A priority Critical patent/EP2573270A1/fr
Publication of EP2573270A1 publication Critical patent/EP2573270A1/fr
Withdrawn legal-status Critical Current

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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
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E01F15/025—Combinations of at least two of the barrier member types covered by E01F15/04 - E01F15/08, e.g. rolled steel section or plastic strip backed up by cable, safety kerb topped by rail barrier
    • 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
    • E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
    • E01F15/081—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material
    • E01F15/083—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material using concrete

Definitions

  • the present invention relates to a concrete barrier provided with a protection system for motorcyclists fixed to it.
  • the invention is within the field of vehicle restraint systems, which are those systems installed on the sides of roads as passive safety elements and which aim to minimize the consequences that may be produced in an accident due to a vehicle veering off the roadway.
  • vehicle restraint systems which are those systems installed on the sides of roads as passive safety elements and which aim to minimize the consequences that may be produced in an accident due to a vehicle veering off the roadway.
  • the invention relates to a protection system for motorcyclists applicable to the restraint systems manufactured with concrete.
  • the restraint systems are conceived as passive road safety elements, such that they attempt to minimize the consequences of a possible accident shall a vehicle veers off the roadway.
  • the two types of systems previously mentioned have different behaviors in the way in which they disperse the energy in the event of a vehicle collision. While the metal systems tend to absorb the energy by means of deforming the elements which they are made from, the concrete systems transform the kinetic energy that the vehicle in motion puts into play into potential energy, raising the vehicle at the first moment of collision. These two types of behavior mean that the metal systems tend to be less aggressive for the occupants of the collided vehicle, in exchange of needing greater distance for their operation, while the concrete systems require less operational space but tend to be more rigid and therefore more damaging.
  • protection systems specific for motorcyclists consisting of elements of different types which are arranged in the lower part of the restraint systems, either anchored to the spacers/barriers, or anchored to the posts, such that they act as cushioning against the impact of a motorcyclist.
  • the present invention solves the problem above by means of a concrete barrier according to claim 1 and a method according to claim 15.
  • the concrete barrier of the invention comprises a protection system for motorcyclists fixed to it, said protection system for motorcyclists comprising a metal longitudinal section, and at least one metal support for fixing the metal section to the concrete barrier, the metal section being fixed to the concrete barrier by means of the metal support, at a distance A above the ground and at a distance B between a central area of the section and the concrete barrier.
  • the distance A relates to the vertical distance between a lower end of the longitudinal section and the ground, when the protection system for motorcyclists is assembled on the concrete barrier in a situation of use.
  • the distance B relates to the distance in the horizontal direction between a substantially central area of the longitudinal section, at approximately a suitable height for receiving a motorcyclist impact when the protection system for motorcyclists is assembled on the concrete barrier in a situation of use.
  • the concrete barrier of the invention allows protecting a motorcyclist who may impact the system due to an accident, minimizing the damaged suffered by the latter and preventing him/her from suffering irreversible injuries.
  • the metal support comprises a first sector for connecting the support to the concrete barrier, a second sector separated from the first sector by means of a first fold, and a third sector for connecting the longitudinal section, separated from the second sector by means of a second fold.
  • the second fold of the metal support is made in the same direction as the first fold.
  • the angle ⁇ 1 defined by the first fold is between 130° and 160°.
  • the angle ⁇ 2 defined by the second fold is between 90° and 160°.
  • the second fold of the metal support is made in the direction opposite to that of the first fold.
  • the support has at least one drilled hole for fixing the support to the concrete barrier, for example by means of screwed attachment.
  • the support has at least one drilled hole for its fixing with the longitudinal section.
  • the metal longitudinal section is arranged forming an angle ⁇ of 20° ⁇ 5° with the vertical.
  • the metal longitudinal section is arranged maintaining a separation distance B between a central area of the section and the concrete barrier in the horizontal direction greater than or equal to 50 mm.
  • the metal longitudinal section is arranged maintaining a distance A between 10 and 80 mm between a lower end of the metal section and the ground.
  • the metal longitudinal section is of a type selected from plane type, simple wave type, double wave type, or polygonal type.
  • the longitudinal section has in cross-section a first sector, a second sector connected with the first sector by means of a first fold, a third sector connected with the second sector by means of a second fold made in the direction opposite to the first fold and a fourth sector connected with the third sector by means of a third fold made in the same direction as the first fold.
  • the angle ⁇ 1 defined by the first fold of the sector is greater than 90°.
  • the angle ⁇ 2 defined by the second fold is between 115 and 170°.
  • the angle ⁇ 3 defined by the third fold is less than 90°.
  • the longitudinal section has in cross-section a fifth sector, connected with the fourth sector by means of a fourth fold made in the same direction as the first fold.
  • the angle ⁇ 4 defined by the fourth fold is less than 180°.
  • a second inventive aspect defines a method of fixing a protection system for motorcyclists to a concrete barrier, the protection system for motorcyclists comprising a metal longitudinal section and at least one metal support, the method comprising the following steps:
  • the longitudinal section is fixed to the concrete barrier forming an angle ⁇ of 20° ⁇ 5° with the vertical.
  • the longitudinal section is fixed to the concrete barrier maintaining a separation distance B between a central area of the section and the concrete barrier in the horizontal direction greater than or equal to 50 mm.
  • the longitudinal section is fixed to the concrete barrier maintaining a distance A between 10 and 80 mm between a lower end of the metal section and the ground.
  • Figure 1 shows a concrete barrier (1) according to the invention, provided with a protection system for motorcyclist comprising a metal support (3) and a metal longitudinal section (2). These two components attached to one another are fixed in a lower area of the concrete barrier (1), at a distance from the ground, with an inclination with respect to the vertical and at a distance of contact with the concrete, such that the behavior is that desired in the event of the collision of a motorcyclist.
  • the open longitudinal section (2) is the piece that, in a situation of use with the barrier assembled on a road, is facing the traffic and that which supports the direct impact in case of a collision.
  • the metal section (2) is configured for receiving the motorcyclist victim of the accident, cushioning the impact and preventing a direct initial contact of the motorcyclist with the concrete.
  • Figure 5 shows a profile view of the longitudinal section according to a preferred embodiment of the invention.
  • Said section (2) has in cross-section a first sector (2.1), a second sector (2.2) connected with the first sector (2.1) by means of a first fold of angle ⁇ 1, a third sector (2.3) connected with the second sector (2.2) by means of a second fold of angle ⁇ 2 made in direction opposite to the first fold, a fourth sector (2.4) connected with the third sector (2.3) by means of a third fold of angle ⁇ 3 made in the same direction as the first fold and a fifth sector (2.5), connected with the fourth sector (2.4) by means of a fourth fold of angle ⁇ 4 made in the same direction as the first fold.
  • the section may be plane type, simple or double wave type, or polygonal type, as long as it has a surface suitable for withstanding the first contact with the motorcyclist on impact and being capable of absorbing and transmitting longitudinally the forces put into play.
  • the also metal support (3) performs a double function. On one hand, it allows arranging the longitudinal section (2) at the suitable angle, height and distance, and allows fixing the metal section to the concrete, by means of screws, for example.
  • the support (3) must have a shape suitable for arranging the longitudinal section (2) in a specific position so that it suitably works in the event of a collision, as will be subsequently described.
  • Figures 3 and 4 show a metal support (3) according to a preferred embodiment, comprising a first sector (3.1) for connecting the support (3) to the concrete barrier (1), a second sector (3.2), separated from the first sector (3.1) by means of a first fold, and a third sector (3.3) for connecting the metal section (2), separated from the second sector (3.2) by means of a second fold. Both folds are made in the same direction, with an angle ⁇ 1 between the first sector (3.1) and the second sector (3.2) between 130° and 160°, and an angle ⁇ 2 defined by the second fold between 90° and 160°.
  • the support (3) of this embodiment has in the first sector (3.1) two drilled holes (4) for fixing the support to the concrete barrier (1).
  • This embodiment relates to oblong drilled holes, allowing certain play in the height of the fixing.
  • the support (3) has in its third sector (3.3) a drilled hole (5) for fixing the longitudinal section (2) to the support (3). In this case it also relates to an oblong drilled hole.
  • Figures 1 and 2 show a concrete barrier provided with a protection system for motorcyclists with the support of Figures 3 and 4 and the longitudinal section of Figure 5 .
  • the protection system will absorb the impact thereof, preventing the motorcyclist from directly impacting the concrete (1) and redirecting his/her trajectory, preventing the head, which is the most vulnerable part in this type of accident, from suffering great forces.
  • the barrier will travel a sufficient transversal trajectory before impacting on the concrete base.
  • Figure 6 schematically shows the parameters to be taken into consideration when arranging a protection system for motorcyclists on a concrete barrier, as defined by the invention.
  • the metal section (2) is fixed to the concrete barrier (1) by means of the metal support (3), at a distance A above the ground and at a distance B between a central area of the section (2) and the concrete barrier (1).
  • the distance A between a lower end of the metal section (2) and the ground must be small enough to prevent the motorcyclist from being able to pass under the longitudinal section.
  • the separation distance B between a central area of the section (2) and the concrete barrier (1) in the horizontal direction is greater than or equal to 50 mm.
  • the metal longitudinal section (2) is arranged in the protection system forming an angle ⁇ 20° ⁇ 5° with the vertical.
  • Figure 7 shows a schematic depiction of the behavior of the barrier according to the invention in event of a motorcyclist collision.
  • the head will collide against the section, such that the section will dissipate the energy by means of a first slight elastic deformation, until the lower end of the section abuts the concrete (phase (b)), and a subsequent plastic deformation (phase (c)), accompanied by a transversal movement of the barrier towards the concrete.
  • expulsion forces opposite to the trajectory of the motorcyclist act first on the head and then on the body of the motorcyclist, that will impart an exit momentum to him/her corresponding to the rotation about a vertical axis, which will make the motorcyclist adopt a trajectory departing from the system, meaning that when the metal section contacts the concrete the motorcyclist is in a position such that his head, and therefore his neck, do not bear the severity of the collision.
  • Figures 8 and 9 show a second embodiment of concrete barrier (1) provided with a protection system for motorcyclists fixed to it.
  • the longitudinal section (20) is a shield having polygonal section with a flat central area suitable for receiving the impact of the motorcyclist.
  • the support (30) has three sectors with two folds, a first fold in one direction and the second fold made in the opposite direction.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
EP11380075A 2011-09-22 2011-09-22 Barrière en béton doté d'un système de protection pour motocyclistes Withdrawn EP2573270A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11380075A EP2573270A1 (fr) 2011-09-22 2011-09-22 Barrière en béton doté d'un système de protection pour motocyclistes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11380075A EP2573270A1 (fr) 2011-09-22 2011-09-22 Barrière en béton doté d'un système de protection pour motocyclistes

Publications (1)

Publication Number Publication Date
EP2573270A1 true EP2573270A1 (fr) 2013-03-27

Family

ID=44905769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11380075A Withdrawn EP2573270A1 (fr) 2011-09-22 2011-09-22 Barrière en béton doté d'un système de protection pour motocyclistes

Country Status (1)

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EP (1) EP2573270A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08158334A (ja) * 1994-12-02 1996-06-18 Sumitomo Metal Ind Ltd 道路用防護装置
WO2001006063A1 (fr) * 1999-07-21 2001-01-25 Autostrade Concessioni E Costruzioni Glissiere polyvalente avec double effet amortissement/resistance
US6276667B1 (en) * 1999-10-15 2001-08-21 W. Eugene Arthur Energy dissipating system for a concrete barrier
EP1767701A1 (fr) * 2005-09-23 2007-03-28 Sec Envel Procédé d'absorption de choc contre une barriere de sécurité pour voie de circulation et barriere de sécurité de mise en oeuvre

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08158334A (ja) * 1994-12-02 1996-06-18 Sumitomo Metal Ind Ltd 道路用防護装置
WO2001006063A1 (fr) * 1999-07-21 2001-01-25 Autostrade Concessioni E Costruzioni Glissiere polyvalente avec double effet amortissement/resistance
US6276667B1 (en) * 1999-10-15 2001-08-21 W. Eugene Arthur Energy dissipating system for a concrete barrier
EP1767701A1 (fr) * 2005-09-23 2007-03-28 Sec Envel Procédé d'absorption de choc contre une barriere de sécurité pour voie de circulation et barriere de sécurité de mise en oeuvre

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