EP1767701A1 - Verfahren zur Absorption eines Aufpralls gegen eine Schutzbarriere für Strassen und entsprechend ausgeführte Schutzbarriere - Google Patents

Verfahren zur Absorption eines Aufpralls gegen eine Schutzbarriere für Strassen und entsprechend ausgeführte Schutzbarriere Download PDF

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Publication number
EP1767701A1
EP1767701A1 EP06291385A EP06291385A EP1767701A1 EP 1767701 A1 EP1767701 A1 EP 1767701A1 EP 06291385 A EP06291385 A EP 06291385A EP 06291385 A EP06291385 A EP 06291385A EP 1767701 A1 EP1767701 A1 EP 1767701A1
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EP
European Patent Office
Prior art keywords
support
safety barrier
holding means
deformable
arm
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Withdrawn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
EP06291385A
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English (en)
French (fr)
Inventor
Jean-Claude Dupuis
Pascal Proudy
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Sec Envel
Original Assignee
Sec Envel
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Filing date
Publication date
Application filed by Sec Envel filed Critical Sec Envel
Publication of EP1767701A1 publication Critical patent/EP1767701A1/de
Withdrawn legal-status Critical Current

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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
    • E01F15/025—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 invention relates to a method for improving the energy absorption of a vehicle impact against a taxiway safety barrier, and to a safety barrier comprising at least one stabilizing rail for implementation of the method.
  • the safety barriers can absorb shock by their controlled deformation, they are not, in general, strong enough to prevent a truck from crossing them.
  • this profile has two concave flanks, slightly converging, rising towards the top, rising above a base, and each flank acts for a light vehicle as a springboard because of a very close relationship. unfavorable between the average diameter of the wheels of passenger vehicles and the height of the base, and because of the adherent couple concrete-rubber because it is the tires that are first in contact with the wall.
  • the wheels on the separator side mount on the base and are guided upward while the wheels on the side of the roadway always remain in contact with the ground.
  • the vehicle is thus projected upwards because of the vertical component introduced by the sidewall, and the destabilized vehicle can turn during its "exit" trajectory of the barrier.
  • the patent EP 0 604 277 describes a safety device to solve this problem of rollover of damaged vehicles.
  • This device consists of a horizontal rail adapted to have a vertical resistance to a shock directed from below upwards and to present a deformability for a side impact.
  • the smooth according to this document absorbs some of the energy of a side impact but firmly resists "to prevent any upward movement”.
  • the lateral deformability causes a "downward" deformability by sliding relative to the support, the lower end of the rail being free of movement. This has the effect of giving the deformable assembly (the rail) a preferred rigidity, to withstand shocks having an ascending component and, conversely, a preferred deformability downwards intended to promote the folding of vehicles and to to thwart their elevation.
  • the object of the present invention is to prevent any risk of vehicle rollover while limiting the violence of shocks, to improve the safety of people in the passenger compartment and to avoid uncontrolled return of the vehicle to the roadway which may cause further impact (hereinafter "over-accident").
  • the invention proposes to provide a barrier rail capable of absorbing a portion of the vertical component of a shock while ultimately opposing the elevation and overturning of a vehicle accident.
  • the invention relates to a method for improving the energy absorption of a vehicle impact against a traffic lane safety barrier comprising, in the operational position, a support of "indeformable” nature having a at the top, a slideway equipped with at least one horizontal beam element, and means for holding the slideway on the "indeformable” support, said method consisting in absorbing at least a portion of the upward vertical component energy of a shock by tilting of the slide of a so-called “rest” position, in which the holding means keep the beam offset from the support relative to a vertical plane, towards a so-called “operating” position, in which the smooth tends to approach the support in a horizontal plane while going up to the top of the support, then hangs against the support in the up position to oppose a reversal of the vehicle.
  • the method further comprises the step of communicating at least a portion of the upward energy of the impact to the means for holding by transmitting this energy to at least one deformable portion of these holding means.
  • the invention also relates to a safety barrier intended to be arranged along traffic lanes, comprising, in operational position, a support of "indeformable” nature having a top, a slide equipped with at least one horizontal rail, and means for holding the slideway on the "indeformable” support, in which the rail is connected to the "indeformable” support by holding means in the rest position, in which the holding means retain the offset rail of the support compared to a vertical plane, the means of maintenance comprising at least one deformable portion calibrated to yield in the event of an impact so that the slide in the rest position shifts in the operating position, in which the rail tends to approach the support in a horizontal plane while ascending towards the top of the support, and at least a "deformable” portion so that the arm locks against the support in the up position to oppose a reversal of the vehicle.
  • deformation or “deformable” is used in the sense of a plastic deformation, that is to say a permanent deformation which has almost no resilience, as opposed to elastic deformation.
  • the "indeformable" character of an element is understood to be significantly less “deformable” than the so-called “deformable” elements. It is the difference in deformability that is important.
  • wheel-fender Some systems of the state of the art grouped under the general term "wheel-fender" have elastic rubber parts which yield during a shock and return to their original shape by returning the vehicle by rebound towards the road without absorbing the less energy since the one that compressed the parts during the shock is returned to the vehicle when these parts return to their original shape.
  • this device is intended to repel vehicles to the driving lane, even at the cost of the very serious danger of projecting the vehicle to a lane where other vehicles circulate.
  • the upward energy absorption phase not only makes it possible to reduce the violence of the shock against the barrier by accompanying the movement, but also reduce the risk of accident by reducing the speed of return on the lane and reducing the length of the stop of the vehicle.
  • the method consists in communicating at least a portion of the upward energy of the shock to the transmission holding means to at least one deformable portion of these holding means, so that the slide from the rest position to the operating position and that, in this position, the holding means allow the rail to approach the support in a horizontal plane, while going up to the top of the support, and then to lock against the support. high position to oppose a reversal of the vehicle.
  • Figures 1 to 12 illustrate a safety barrier for carrying out the method according to the invention.
  • the safety barrier shown in FIG. 1 comprises a "deformable" support 10 of the concrete separator type and a slideway 20 fixed to the separator by a bolt 30.
  • This bolt 30 is not of the same type as those used on the mounted guardrails. on known vertical metal supports. On the latter, bolts are “fuse” type that is to say they are calibrated to give way under a shock to release the slide of the vertical supports. On the contrary, in the present invention, the bolts 30 are calibrated so as not to give way under impact in order to maintain anchoring of the slide on the separator 10.
  • the separator 10 shown is said to be "simple", that is, it has a steep side 11 and a "New Jersey" profile side 12.
  • a single separator is used on the shoulder, that is to say in operational position the steep side 1 is opposite the traffic lane and the profiled side 12 is facing the taxiway V.
  • this embodiment of slide as the following described below can be fixed indifferently on single separators used on the shoulder or double separators - having two sides 12- used in the central reservation.
  • the slideway 20 comprises a rail 21 connected to the side 12 of the separator 10 by a spreader arm 22 secured to the support by the bolt 30.
  • the arm 22 and the bolt 30 form a means for holding the rail 21 on the separator 10.
  • the spreading arm 22 is provided with a "deformable" portion 23 for attachment to the support 10 and a deformable portion 24 adapted to twist in case of impact.
  • This spreader arm 22 further comprises a fastening portion 25 to the rail 21.
  • the fastening portion 25 to the rail 21 has an inverted C profile which allows a double attachment on the upper face 26 and lower 27 of the stringer 21.
  • the attachment means of the arm 22 on the rail 21 is here a through bolt 28 which passes inside (not visible) slots located opposite the upper faces 26 and lower 27 of the rail 21 and on the branches of the C inverted of the fixing portion 25.
  • the spacer arm 22 maintains the arm 21 offset from the support 10 relative to a vertical plane.
  • the shock When a vehicle hits the barrier ( Figure 2), the shock has a vertical component and a horizontal component.
  • the present invention makes it possible to absorb at least a portion of the energy of these two components and still prevents the vehicle from turning over.
  • the deformable portion 24 is provided to yield by folding so that the slide 21 approaches the support horizontally while shifting upwardly towards the top 13 of the support 10. Thanks to the " non-deformable »fastening 23 to the support 10 the arm 21 performs a pivoting movement at an angle ⁇ relative to the initial inclination i , and locks against the support in an operating position higher than the rest position .
  • This blocking allows the slide 20 to oppose the overturning of the vehicle. The fact that the blocking occurs only after an upward movement of the slide allows it to absorb at least a portion of the vertical component of the shock.
  • the through bolt 30 "undeformable" also participates in the blocking of the slide 20 while maintaining a defined spacing of the faces 26 and 27 of the smooth.
  • the arm has a certain "indeformable” geometry, even if the shock causes the deformation, for example, of the front face of the arm 21.
  • an end 29 of the rail 21 and the fixing portion 25 is free, so that the resistance to tilting is opposed, in a first step, only by the deformable portion 24 of the spreader arm 22.
  • FIG. 3 illustrates the particular interest of using a through bolt 29a, 29b as "indeformable" coupling means.
  • this coupling means of the faces 26a-27a and 26b-27b of the elements of the smooth 21a and 21b allows the assembly and the adjacent attachment of these two elements.
  • two adjacent elements 21a and 21b may not be fixed in alignment with one another and thus allow the installation of a barrier according to the invention along segments of Curved traffic lane, while ensuring the continuity of the smooth and the safety of the vehicles.
  • FIG. 4a illustrates a simpler embodiment of the invention in which the slideway 40 comprises a beam 41 and a spacer arm 42 associated with each other by a single point of attachment.
  • the arm 42 comprises a "deformable" fastening portion 43 fixed to the support 10 by a bolt 30 of the same type as in the embodiment of FIG.
  • a deformable portion 44 is in the extension of the portion 43 and precedes an attachment portion 45 to the smooth 41.
  • the upper faces 46 and lower 47 of the rail 41 are connected by an "indeformable" coupling bolt 48.
  • a space e is formed between the free end 46a of the upper face 46 of the rail 41.
  • the deformable portion 44 deforms by absorbing at least a portion of the energy of the shock, which causes the arm 41 to move towards the support and to at least partially bridge the space e , while shifting towards the top of the support.
  • the arm 41 has pivoted and that it comes into contact with the support, it locks to oppose the overturning of the vehicle.
  • this end 46a can deform against the support 10 and absorb some of the energy of the shock until the "indeformable" bolt 48 hangs against the folded end 46a or the support 10.
  • the part of the rail located between the bolt and the lane can also partially deform and absorb shock energy.
  • the bolt 48 When pivoting the beam, the bolt 48 transmits the rising energy of the impact on the lower face to the upper face.
  • FIG. 5 represents a variant 50 of the embodiment of the slide 40 of FIGS. 4a and 4b which differ from it on the one hand in that the holding means 52 on the support 10 is an integral part of the rail 51 and constitutes a lower end thereof, and secondly, by the absence of space e between the free end 56a of the rail 51.
  • the deformable portion 54 of the holding means 52 and the end 56a deform so that the arm pivots and approaches the support 10, while shifting upwardly towards the top of the support 10.
  • the slide embodiment 60 of Figures 6 and 7 comprises a smooth 61 and a spacer arm 62 in the form of two C facing one another.
  • the branches of the two C's are coupled by an "indeformable" through bolt 68.
  • the base of the C-arm constitutes a "non-deformable" fastening portion 63 of the arm 62 on the support 10.
  • the spreader arm 62 comprises two deformable parts 64a and 64b respectively joining the base 63 to the two wings 65a and 65b of the arm 62.
  • the wings 65a and 65b constitute the attachment portions of the arm on the rail 61. This attachment is performed by a through bolt "indeformable" 68.
  • the slide is in the rest position because the arm 62 keeps the arm 61 spaced apart from the support 10 relative to the vertical plane j by a distance z .
  • Figure 7 shows the barrier of Figure 6 after an impact in which the two parts 64a and 64b have deformed by absorbing a portion of the energy.
  • the arm 61 has approached the support 10 in a horizontal plane so that the spacing distance e 3 is almost zero.
  • the attachment bolt 30 of the arm 62 on the support 10 is located substantially in the center of the "indeformable" base 63.
  • this base can still slightly distort. If the bolt is located too far away from the deformable portion 64a, the slide may pivot too high, thus preventing it from locking against the support 10 which would allow the overturning of the vehicle.
  • FIGS. 8 and 9 has a slideway 80 comprising a rail 81 attached to a holding arm 82.
  • the arm 82 has two deformable portions 84a and 84b the latter having a preferred deformation zone aimed firstly to facilitate the deformation, and secondly to guide this deformation upwardly and towards the support.
  • the smooth 81 also has a portion 81a absorbing the vertical energy of the shock.
  • the "indeformable" portion of the arm 82 comprising the “indeformable” fastening base 83 and the bolt “Undeformable” 88, allows the locking of the arm in the up position to oppose the overturning of the vehicle.
  • the slide embodiment 100 of FIG. 10 has a spacer arm 102 (see FIG. 13) having a "deformable” fastening portion 103 on the support 10, a deformable portion 104 enabling the beam to be tilted to the position of FIG. use and a portion 105 of attachment to the smooth 101.
  • This fastening part comprises three successive loops 105a, 105b and 105c traversed from one end to the other by an "indeformable" bolt 108.
  • the loop 105b comes into contact with the support 10 and / or the attachment portion 103 and is deformed by absorbing part of the upward and lateral energy of the impact.
  • the loops 105a and 105c may, for their part, deform by absorbing part of the lateral energy of the shock after deformation of the arm.
  • the portion 105 has only two loops -formant a S-profile 105a and 105b.
  • FIG. 11 illustrates a slide 110 comprising a rail 111 and a spreader arm 112 holding the rail away from the support 10 in the rest position.
  • the arm 112 comprises a fixing portion 113 to the support 112, a deformable portion 114 and a fixing portion 115 to the arm 111. This attachment is provided by a through bolt 118.
  • the arm 112 further comprises a box "indeformable" 119.
  • the deformable portion 114 of the arm 112 allows the pivoting upwards and towards the support of the arm 111 fixed to the attachment portion 115.
  • the faces 116 and 117 of the arm 111 cover the casing 119 and the through bolt 118 locks against the casing 119. This thus forms a locking stop in the operating position thus preventing any reversal.
  • This embodiment has the advantage of a light smooth since the locking stop is previously placed against the support and is not cantilevered on the spreader arm 112.
  • the slide 120 of FIG. 12 is identical to that illustrated in FIG.
  • This resistance can be continuous or increasing depending on the shape given to this device.
  • this additional absorption device is placed to present a deformation in the direction of the resultant shock.
  • This resultant is oblique because it includes a vertical component and a horizontal component.
  • the device 130 preferably consists of a corrugated deformable element.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
EP06291385A 2005-09-23 2006-09-01 Verfahren zur Absorption eines Aufpralls gegen eine Schutzbarriere für Strassen und entsprechend ausgeführte Schutzbarriere Withdrawn EP1767701A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0509760A FR2891285B1 (fr) 2005-09-23 2005-09-23 Procede d'absorption de choc contre une barriere de securite pour voie de circulation et barriere de securite de mise en oeuvre.

Publications (1)

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EP1767701A1 true EP1767701A1 (de) 2007-03-28

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EP06291385A Withdrawn EP1767701A1 (de) 2005-09-23 2006-09-01 Verfahren zur Absorption eines Aufpralls gegen eine Schutzbarriere für Strassen und entsprechend ausgeführte Schutzbarriere

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EP (1) EP1767701A1 (de)
FR (1) FR2891285B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2573270A1 (de) * 2011-09-22 2013-03-27 Juan José María González Uriarte Betonbarriere mit Schutzsystem für Motorradfahrer
EP2592187A1 (de) * 2011-11-12 2013-05-15 Hermann Spengler GmbH & Co. KG Fahrspurbegrenzungseinrichtung
CN107119562A (zh) * 2017-06-05 2017-09-01 钟利芬 一种道路桥梁的防撞保护栏

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT330233B (de) * 1972-12-15 1976-06-25 Vmw Ranshofen Berndorf Ag Nachgiebige befestigung von leitschienen an gelandern, pfosten, stehern, wanden u.dgl.
DE8706088U1 (de) * 1986-05-07 1987-09-03 Rausch, Peter, Ing., Thörl, Steiermark Fuß bzw. Fußplanke von Leitschienen
EP0604277A1 (de) * 1992-12-18 1994-06-29 Les Profiles Du Centre S.A. Leitplanken mit nicht deformierbaren Trägern und kontinuierlich deformierbaren Leitschienen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT330233B (de) * 1972-12-15 1976-06-25 Vmw Ranshofen Berndorf Ag Nachgiebige befestigung von leitschienen an gelandern, pfosten, stehern, wanden u.dgl.
DE8706088U1 (de) * 1986-05-07 1987-09-03 Rausch, Peter, Ing., Thörl, Steiermark Fuß bzw. Fußplanke von Leitschienen
EP0604277A1 (de) * 1992-12-18 1994-06-29 Les Profiles Du Centre S.A. Leitplanken mit nicht deformierbaren Trägern und kontinuierlich deformierbaren Leitschienen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2573270A1 (de) * 2011-09-22 2013-03-27 Juan José María González Uriarte Betonbarriere mit Schutzsystem für Motorradfahrer
EP2592187A1 (de) * 2011-11-12 2013-05-15 Hermann Spengler GmbH & Co. KG Fahrspurbegrenzungseinrichtung
CN107119562A (zh) * 2017-06-05 2017-09-01 钟利芬 一种道路桥梁的防撞保护栏

Also Published As

Publication number Publication date
FR2891285A1 (fr) 2007-03-30
FR2891285B1 (fr) 2007-12-07

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