EP2180098A1 - Verbesserter Abstandshalter für eine Straßenleitplanke - Google Patents

Verbesserter Abstandshalter für eine Straßenleitplanke Download PDF

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Publication number
EP2180098A1
EP2180098A1 EP08165180A EP08165180A EP2180098A1 EP 2180098 A1 EP2180098 A1 EP 2180098A1 EP 08165180 A EP08165180 A EP 08165180A EP 08165180 A EP08165180 A EP 08165180A EP 2180098 A1 EP2180098 A1 EP 2180098A1
Authority
EP
European Patent Office
Prior art keywords
spacer
region
safety barrier
road safety
regions
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Withdrawn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
EP08165180A
Other languages
English (en)
French (fr)
Inventor
Johann Hellweger
Andrea Demozzi
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.)
Ligna Sas Di Johann Hellweger & C Ligna KG Des Johann Hellweger & Co
Original Assignee
Ligna Sas Di Johann Hellweger & C Ligna KG Des Johann Hellweger & Co
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 Ligna Sas Di Johann Hellweger & C Ligna KG Des Johann Hellweger & Co filed Critical Ligna Sas Di Johann Hellweger & C Ligna KG Des Johann Hellweger & Co
Priority to EP08165180A priority Critical patent/EP2180098A1/de
Publication of EP2180098A1 publication Critical patent/EP2180098A1/de
Withdrawn legal-status Critical Current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
    • E01F15/04—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

Definitions

  • the present disclosure refers to an improved spacer for a road safety barrier and, more specifically, to an improved spacer for a safety barrier preferably made with wooden material.
  • guardrail barriers which are placed on roadway sides along dangerous road stretches to prevent transiting vehicles from going off the roadway in case of side skid.
  • a guardrail barrier should be able to absorb as much as possible the kinetic energy of the impacting vehicle, yet in no case should it be as rigid as to compromise occupants' safety.
  • too elastic a barrier would result in throwing back the vehicle towards the centre of roadway, with the risk of impact with other oncoming vehicles.
  • Known-art guardrail barriers are comprised of an array of vertical uprights, set at regular spacing and driven in the ground along the edge of the roadway, a longitudinal stringer, and spacers interposed between each upright and said stringer. These components are usually made of metal, like e.g. steel or galvanised sheet iron.
  • the spacer allows to keep the longitudinal stringer at a certain distance from the upright, in order to avoid a vehicle impact against the upright itself.
  • the spacer can be designed so as to plastically and elastically deform during the impact, facilitating the containment function of the barrier.
  • the upright tends to deform by bending to the outside of the roadway, with generation of a plastic hinge at the upright bottom, and, therefore, it decreases in height; since the longitudinal stringer is constrained to it, during deformation the upright drags the stringer downward therewith and therefore reduces guardrail effectiveness in preventing the vehicle from going off the roadway, as the risk of passing over the same stringer increases.
  • a vehicle skidding along the stringer meets an increasingly lower stringer as uprights deflect to the outside, and therefore might go so far as to pass over the same stringer, thereby ending up off-road.
  • guardrail barriers are typically made of metallic material. Oft-times, it is observed that, owing to the action of atmospheric agents and inadequate maintenance, over time such barriers take on an unpleasant and unaesthetic appearance, with more or less extended dents and rusty or stained regions. This problem proves particularly relevant in hilly and mountain environments, where sensitivity to a harmonious setting of artefacts in the surrounding landscape is greater.
  • guardrail barriers made of wooden material, or coated with wooden material have been proposed. These however fail in exhibiting the safety requirements (from the standpoint of strength and dynamic behaviour) needed to have widespread application on all road types, or only partially mitigate the mentioned aesthetic and maintenance problems.
  • Object of the present disclosure is to solve at least one of the above-mentioned problems of the known art; this is attained through an improved spacer as defined in independent claim 1, inserted inside a road safety barrier, preferably of wooden material, as defined in dependent claim 10. Secondary features of the present disclosure are defined in the corresponding dependent claims thereof.
  • a first advantage of the present disclosure lies in providing a spacer for a road safety barrier allowing to keep longitudinal stringers at an adequate height during the impact by a vehicle;
  • contingent upright oscillations or deflections towards the outside cause a relative motion of the fastening members inside the cutout with respect to the spacer, thereby reducing or even preventing a direct motion of the spacer and of the longitudinal stringer connected to the spacer.
  • contingent motions of the uprights determine a displacement of the fastening members, joined to the uprights, in the cutout, to a possible exiting from the cutout, thereby minimizing the risk of a displacement in height of the spacer and the longitudinal stringer connected thereto.
  • a second advantage of the present disclosure lies in providing a spacer allowing to produce a guardrail barrier meeting the strict safety requirements required thereto.
  • Another advantage of the present disclosure lies in providing a guardrail barrier comprising structural elements of wooden material.
  • Yet another advantage of the present disclosure lies in the capability of providing a guardrail barrier which can be installed on different types of road and respecting the surrounding landscape.
  • FIG 1A it is depicted a cross-sectional view of a known-art guardrail barrier 1, comprising a plurality of uprights 2 vertically driven in ground 3 at a regular spacing to each other, a longitudinal stringer 4 and spacers 5 interposed between each upright 2 and said stringer 4.
  • Each spacer 5 is fastened to the respective upright 2 (besides to the stringer 4) by means of bolts 6 or other fastening members.
  • the spacer 5 has the function of keeping the stringer 4 at a distance from the upright 2 such as to prevent as much as possible the impact of a vehicle 9 against the upright 2 itself. Said spacer 5 is designed to deform both elastically and plastically during the impact of the vehicle 9 against the stringer 4, in order to improve the containment function exerted by guardrail barrier 1.
  • Figures 2 and 3 show a guardrail barrier 10 according to the present disclosure, comprising a plurality of uprights 21 driven in the ground 31, an upper longitudinal stringer 41, a lower longitudinal stringer 42, and spacers 51 interposed between each of said uprights 21 and said longitudinal stringers 41 and 42.
  • Each of said uprights 21 preferably comprises a section bar 22 of steel or metal and a covering 23 of wooden material fastened thereto, e.g., by means of bolts 24.
  • One face of the upright 21 facing the roadway has two slots 25 and 26, set at different heights and obtained in an arrangement staggered therebetween with respect to a longitudinal direction 27 of said face.
  • Said longitudinal stringers 41 and 42 are arranged parallel to each other, and each one of them preferably comprises thereinto a laminar structure 43, or core, of metal or steel, covered by wooden material.
  • Said laminar structure 43 which is fastened to the wooden material covering, e.g., by means of bolts 44, allows greater strength to lateral forces developing on the stringer following an impact.
  • each of said stringers may comprise more longitudinal layers of wooden material (e.g., three, as depicted in Figure 3 ) fastened thereamong by means of glue or screws or bolts.
  • connection between successive modules 45 and 46 of longitudinal stringer 41, 42 may be of male/female type, or tenon-and-mortise, and produced, e.g., by providing for the ends of each module 45 and 46 to have a length of said laminar structure 43 projecting longitudinally from the wooden material covering, and a housing, obtained in the wooden material, apt to receive said projecting length of laminar structure into the successive module. Therefore, said connection is obtained by inserting said projecting length of laminar structure 43 of a first module 45 into said housing of a second module 46 (and vice versa) and blocking the system by means of bolts 47, into suitable holes made both in the wooden material and the laminar structures.
  • each spacer 51 preferably made of shaped sheet steel, comprises two first regions 52 and 53 for a fastening on an upright 21, a second region 54 for a fastening to the stringers 41 and 42, a first spacing region 55 and a second spacing region 56.
  • Said two first fastening regions 52 and 53 are aligned therebetween with respect to a longitudinal direction 59 of the spacer 51 and lie substantially on a same plane.
  • Each of said first fastening regions 52 and 53 comprises a cutout 60, open to an edge 62 of the respective region, said edge being the bottom one when the spacer is installed; in other words, the cutout 60 opens to a bottom portion of the respective first fastening region 52, 53.
  • the cutout 60 comprises a seat 61, a first edge 63 substantially parallel to the longitudinal direction 59 of said spacer 51, and a second edge 64 tilted with respect to said longitudinal direction 59.
  • said seat 61 is formed in the cutout 60, preferably between the first edge 63 and the second edge 64, and it is apt to house fastening members 70, and may have a semicircular (as depicted), semielliptical, triangular shape, or other suitable shapes consistent with the fastening members 70 housed therein, which will be described hereinafter.
  • Said second fastening region 54 has a central slot 57 for fastening to the stringers 41 and 42, as will be described hereinafter.
  • Said second fastening region 54 lies on a plane which is distinct with respect to that containing said first fastening regions 52 and 53, preferably substantially parallel or slightly tilted to that of the first fastening regions 52 and 53, and, even more preferably, tilted of a few degrees (e.g., 3°) with respect thereto.
  • Said second fastening region 54 is jointed top-side to the top end of the first upper fastening region 52 by means of the first spacing region 55, which is substantially orthogonal to the first fastening region 52 itself; in addition, the same second fastening region 54 is jointed bottom-side to the top end of the first lower fastening region 53 by means of the second spacing region 56, which is tilted with respect to said first fastening regions 52 and 53, and said second fastening region 54. Therefore, the spacer 51 has a substantially "G"-shaped longitudinal section.
  • cutouts 60, and in particular the seats 61, on said first fastening regions 52 and 53 are obtained in an arrangement staggered therebetween with respect to said longitudinal direction 59 of said spacer 51.
  • the fastening of the spacer 51 to the respective upright 21 is attained with the fastening members 70 inserted in said seats 61 of the spacer and in said slots 25 and 26 of the upright 21.
  • Said fastening members 70 could be bolts, rivets, screws, nails or other equivalent fastening members.
  • Both longitudinal stringers 41 and 42 are fastened to the spacer 51 by means of "L"-shaped brackets 71 and 72, which have a first flange fastened to the bottom face of the respective stringer and a second flange fastened to said spacer by means of a bolt 73 or the like inserted in said slot 57 of the second fastening region 54.
  • bracket 72 for supporting said lower stringer 42 extends at said second spacing region 56 of the spacer 51.
  • the upper stringer 41 has a face substantially adjacent and parallel to said second fastening region 54 of the spacer; the corresponding face of the lower stringer 42, though being parallel to said region 54 as well, extends instead in correspondence of said second spacing region 56, which, by being tilted, exhibits a tilt also with respect to the stringer 42 itself.
  • the spacers 51 carry out the usual function of keeping the stringers 41 and 42 spaced from the uprights 21 to prevent the impact of a vehicle against the uprights themselves, and of absorbing, by deforming, part of the kinetic energy of the impacting vehicle.
  • the stringers 41 and 42 keep a position higher than the one they would have if they would rigidly follow the upright 21 itself. Moreover, the described deformation mode fosters the extraction of the fastening means 70 from the respective seats 61 upon reaching a certain degree of deformation of the spacer 51, as shown in Figure 4 , and therefore fosters the release of the spacer 51 from the upright 21.
  • cutouts 60 allow an easy release of the spacer 51, and therefore of the stringers 41 and 42, from the upright 21.
  • guardrail barrier 10 enhances the effectiveness of the barrier itself in case of impact. Moreover, the described technical contrivances allow a wide use of wooden material as constructive material, with an improvement of the aesthetic aspect but without compromising overall safety.
  • the spacer 51 might comprise only one of said first fastening regions 52 or 53 on the upright 21, said region comprising a cutout 60 and a seat 61 as aforedescribed.
  • the first upper fastening region 52 might be fastened according to the above-disclosed modes, whereas the first lower fastening region 53 might be replaced by a mere support plane for supporting the spacer 51 onto the upright 21.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
EP08165180A 2008-09-25 2008-09-25 Verbesserter Abstandshalter für eine Straßenleitplanke Withdrawn EP2180098A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08165180A EP2180098A1 (de) 2008-09-25 2008-09-25 Verbesserter Abstandshalter für eine Straßenleitplanke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08165180A EP2180098A1 (de) 2008-09-25 2008-09-25 Verbesserter Abstandshalter für eine Straßenleitplanke

Publications (1)

Publication Number Publication Date
EP2180098A1 true EP2180098A1 (de) 2010-04-28

Family

ID=40328976

Family Applications (1)

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EP08165180A Withdrawn EP2180098A1 (de) 2008-09-25 2008-09-25 Verbesserter Abstandshalter für eine Straßenleitplanke

Country Status (1)

Country Link
EP (1) EP2180098A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150129822A1 (en) * 2013-10-11 2015-05-14 Safe Direction Pty Ltd Barrier system
WO2016156899A1 (en) 2015-04-02 2016-10-06 Arcelormittal Spacer for road safety barrier
WO2016156898A1 (en) 2015-04-02 2016-10-06 Arcelormittal Spacer for road safety barrier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000040804A1 (en) * 1998-12-22 2000-07-13 Anders Welandsson Anchorage element
EP1182296A1 (de) * 2000-08-25 2002-02-27 Sec Envel S.à.r.l. Verkehrsleit- und Schutzplankenanordnung
US6637971B1 (en) * 2001-11-01 2003-10-28 Worcester Polytechnic Institute Reusable high molecular weight/high density polyethylene guardrail
EP1455020A1 (de) * 2003-03-06 2004-09-08 Profil R Befestigungsvorrichtung eines Schutzschirmes für eine Leitplanke
EP1741833A2 (de) * 2005-07-06 2007-01-10 Hierros y Aplanaciones, S.A. (HIASA) Kontinuierliches metallisches System für Sicherheitsbarrieren, als Schutz von Motorradfahrern verwendbar und bestehend aus einer unteren kontinuierlichen horizontalen metallischen Blende, gestützt an der Barriere mittels metallischen Trägern, die in regelmässigen Abständen angeordnet sind

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000040804A1 (en) * 1998-12-22 2000-07-13 Anders Welandsson Anchorage element
EP1182296A1 (de) * 2000-08-25 2002-02-27 Sec Envel S.à.r.l. Verkehrsleit- und Schutzplankenanordnung
US6637971B1 (en) * 2001-11-01 2003-10-28 Worcester Polytechnic Institute Reusable high molecular weight/high density polyethylene guardrail
EP1455020A1 (de) * 2003-03-06 2004-09-08 Profil R Befestigungsvorrichtung eines Schutzschirmes für eine Leitplanke
EP1741833A2 (de) * 2005-07-06 2007-01-10 Hierros y Aplanaciones, S.A. (HIASA) Kontinuierliches metallisches System für Sicherheitsbarrieren, als Schutz von Motorradfahrern verwendbar und bestehend aus einer unteren kontinuierlichen horizontalen metallischen Blende, gestützt an der Barriere mittels metallischen Trägern, die in regelmässigen Abständen angeordnet sind

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150129822A1 (en) * 2013-10-11 2015-05-14 Safe Direction Pty Ltd Barrier system
US9217230B2 (en) * 2013-10-11 2015-12-22 Safe Direction Pty Ltd Barrier system
WO2016156899A1 (en) 2015-04-02 2016-10-06 Arcelormittal Spacer for road safety barrier
WO2016156898A1 (en) 2015-04-02 2016-10-06 Arcelormittal Spacer for road safety barrier
US10648142B2 (en) 2015-04-02 2020-05-12 Arcelormittal Spacer for road safety barrier
US10895048B2 (en) 2015-04-02 2021-01-19 Arcelormittal Spacer for road safety barrier

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