EP2017387B1 - Crash barrier assembly - Google Patents

Crash barrier assembly Download PDF

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Publication number
EP2017387B1
EP2017387B1 EP08009861A EP08009861A EP2017387B1 EP 2017387 B1 EP2017387 B1 EP 2017387B1 EP 08009861 A EP08009861 A EP 08009861A EP 08009861 A EP08009861 A EP 08009861A EP 2017387 B1 EP2017387 B1 EP 2017387B1
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EP
European Patent Office
Prior art keywords
support device
support
protective barrier
free limbs
guardrail
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EP08009861A
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German (de)
French (fr)
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EP2017387A1 (en
Inventor
Volker Dipl.-Ing. Goergen
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Studiengesellschaft fur Stahlschutzplanken Ev
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Studiengesellschaft fur Stahlschutzplanken Ev
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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
    • E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0461—Supports, e.g. posts
    • 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
    • E01F15/0423—Details of rails

Definitions

  • the invention relates to a guard rail arrangement for roadways, in particular for use on the roadside, on the median strip or for securing danger spots, according to the preamble of claim 1.
  • Such protective barrier arrangements have been used very successfully for many years as reliable restraint devices, for. B to prevent exceeding of the roadway edge by a strayed from the way vehicle. This is intended to avoid a further endangerment of persons in the vehicle, for example on embankments or on bridges.
  • such protective barrier arrangements also serve as a protective device for adjacent facilities such as, for example, collapse-endangered structures or the like. They are mostly made of steel.
  • Such protective barrier arrangements are constructed from selectively coordinated individual elements connected in a certain way. These allow plastic deformation in certain calculable limits in order to be able to absorb the forces occurring during the impact.
  • the guardrail interacts with the individual uprights, distributing impact loads over several stands and thus providing reliable restraint properties.
  • a guardrail which is attached to a plurality of bases fixed to the bottom and connects them together, a sufficient stability to meet the requirements in the rule can.
  • the invention has the object of developing a generic guard rail assembly such that their retention properties are improved with little design effort.
  • the invention thus provides a very cost-effective, easy to implement and also very effective improvement of a protective barrier arrangement.
  • the two free legs at their pointing to the guardrail edge portions in have predetermined intervals a recess.
  • This measure which at first glance appears to be weakening, has the significant advantage that the degree of possible bending deformation in the course of an impact, etc., is more precisely controllable and calculable. It should be noted that a certain weakening of the support device in the region of a component body due to the system is unavoidable, since there are holes, usually three holes on the support means, which are penetrated in the assembled state of screws for attachment of adjacent support means.
  • the configuration of the recesses on the free legs of the guardrail thereby ensures that the bending behavior of the support means over its entire length as well as over a plurality of juxtaposed support means of time is substantially the same.
  • a predictable flexural softness of the support device is thereby achieved, thus allowing a controlled bending deformation.
  • the Huaweitragrien or Switzerlandband Quass compared to a support device without such recesses is not limited, since the locally reduced plastic resistance moment Wpl is only approximated to the actual vulnerability at the junction of the support means.
  • the support device thus exhibits essentially the same deformation properties over the entire length and therefore facilitates the predictability of the arrangement, which in turn has an advantageous effect on the expenditure for dimensioning such a protective barrier arrangement.
  • the recess is designed as a triangular notch, since such a configuration can be produced with little effort and the system is easily calculable.
  • the support device has a substantially U-shaped cross section with the two free legs and a connecting web such that an internal angle between the two free legs and the connecting web of the support device is between 90 ° and 110 °.
  • an internal angle between the two free legs and the connecting web of the support device is between 90 ° and 110 °.
  • the inner angle between the two free legs and the connecting web of the support device is respectively between 95 ° and 100 °.
  • an angle of 96 ° is particularly advantageous in terms of retention properties.
  • the respective inner angle between the free legs and the connecting web of the support means can be the same size.
  • Fig. 1 has a guard rail assembly 1 in a first embodiment stand 2, wherein a plurality of such stand in practice is lined up next to each other.
  • the stand 2 carry a guardrail 3, which is fixed by means of a holding device 4 on the respective stand 2.
  • a support means 5 is also arranged between the holding device 4 and the guardrail 3.
  • the support device 5 and the guardrail 3 are fastened by means of a screw 6 to the holding device 4.
  • the guardrail 3 according to Fig. 1 has a substantially M-shaped shape, which is referred to as so-called A-profile.
  • a modified embodiment of a guard rail assembly 1 ' is shown, which differs from the guard rail assembly 1 according to Fig. 1 only different in the shape of the guardrail.
  • guardrail 3 ' has a slightly different cross-sectional shape than the guardrail 3 and is referred to in practice as so-called B-profile.
  • the profile type of the guardrail suitable for the respective location is selected from the known variation possibilities.
  • the support means 5 is shown in more detail.
  • the support means 5 is formed in the manner of a profile spar and has a substantially U-shaped cross-section. Accordingly, the support means 5 has two free legs 51 and 52, which are connected to each other via a connecting web 53.
  • slots 54 are further formed at a predetermined distance from each other, in particular from the FIGS. 3 to 5 is apparent.
  • the distance between these slots 54 corresponds to the distance of the stand 2.
  • the screw 6 for attachment of the support means 5 together with the guardrail 3 and 3 'on the holding device 4 takes place through these elongated holes 54 therethrough.
  • the triangular notches 55 are each arranged in cross section adjacent to a slot 54.
  • the support means 5 at their ends in each case a plurality of mounting holes 56, by means of which a plurality of support means 5 along the guard rail assembly 1 and 1 'can be coupled to each other.
  • the mounting holes 56 are offset from the slots 54 arranged to avoid interference of elements and in particular the screw connection elements.
  • Fig. 6 a cross section through the support means 5 is shown.
  • the two legs 51 and 52 each have an internal angle ⁇ or ⁇ relative to the connecting web 53, which in the exemplary embodiment shown is the same size and is approximately 96 °. This angle has proven to be particularly favorable to a reliable absorption of impact energy achieve and at the same time be able to combine different forms of crash barriers 3 and 3 'with a single support means 5.
  • a supporting device made of steel S235 with a material thickness of 3 mm is used.
  • the connecting web 53 here has an outer dimension of about 153 mm and the two legs 51 and 52 are on the outside about 78 mm thereof before.
  • the inner radius between the connecting web 53 and the two legs 51 and 52 is about 5 mm.
  • the triangular notches 55 are in this example about 20 mm wide and also deep.
  • the table shows the relevant plastic limit capacities. Essential for the operation are the bending around the weak axis (Mpl, z), i. the theoretical breaking moment under bending stress, and the normal force in the net cross section (Npl, n), i. the theoretical breaking load under tensile stress.
  • the invention allows, in addition to the illustrated embodiments, further design approaches.
  • the support means 5 can also be used with other types of crash barriers than those in the FIGS. 1 and 2 combine shown.
  • the cross-sectional shape of the support means 5 is not limited to the substantially U-shaped embodiment. Rather, it is, for example, also possible to arrange on the legs 51 and 52 angled extensions, by means of which support surfaces are provided on the back of the guardrail ready.
  • the inner angle ⁇ or ⁇ of the legs 51 and 52 relative to the connecting web 53 is not limited to the 96 ° explained here and may vary depending on the application and shape of the guardrail used.
  • the inner angle is in a range between 90 ° and 110 °, whereby also deviating angles are possible.
  • a recess In place of the triangular notches 55, other geometric shapes can also be used for a recess, such as semicircular recesses or rectangular ones. In particular, it is also possible, in a simplified embodiment, to have such a recess, i. to abandon the triangular notches 55 entirely.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Materials For Medical Uses (AREA)
  • Vibration Dampers (AREA)
  • Massaging Devices (AREA)
  • Finger-Pressure Massage (AREA)

Abstract

The support plank arrangement (1) has multiple bottom side fixed pillars (2). A support unit (5) is provided to support a guide rail (3) on the turned away side of hazardous location. The support unit is formed as profiled bar and the pillars are interconnected. The support unit has two free legs, which are aligned toward to the guide rail and legs are supported backwardly.

Description

Die Erfindung betrifft eine Schutzplankenanordnung für Fahrbahnen, insbesondere für den Einsatz am Fahrbahnrand, am Mittelstreifen oder zur Absicherung von Gefahrenstellen, gemäß dem Oberbegriff des Anspruches 1.The invention relates to a guard rail arrangement for roadways, in particular for use on the roadside, on the median strip or for securing danger spots, according to the preamble of claim 1.

Derartige Schutzplankenanordnungen werden seit vielen Jahren sehr erfolgreich als zuverlässige Rückhalteeinrichtungen eingesetzt, um z. B ein Überschreiten des Fahrbahnrandes durch ein vom Wege abgekommenes Fahrzeug zu unterbinden. Damit soll eine weitergehende Gefährdung von sich im Fahrzeug befindenden Personen bspw. an Böschungen oder auf Brücken vermieden werden. Zudem dienen derartige Schutzplankenanordnungen auch als Schutzeinrichtung für benachbarte Einrichtungen wie bspw. einsturzgefährdete Tragwerke oder dergleichen. Sie sind zumeist aus Stahl ausgebildet.Such protective barrier arrangements have been used very successfully for many years as reliable restraint devices, for. B to prevent exceeding of the roadway edge by a strayed from the way vehicle. This is intended to avoid a further endangerment of persons in the vehicle, for example on embankments or on bridges. In addition, such protective barrier arrangements also serve as a protective device for adjacent facilities such as, for example, collapse-endangered structures or the like. They are mostly made of steel.

Solche Schutzplankenanordnungen sind dabei aus gezielt aufeinander abgestimmten und in bestimmter Weise miteinander verbundenen Einzelelementen aufgebaut. Diese lassen in gewissen, berechenbaren Grenzen eine plastische Verformung zu, um die beim Aufprall auftretenden Kräfte absorbieren zu können. Hierzu wirkt die Leitplanke mit den einzelnen Ständern zusammen, wobei sie Aufpralllasten auf mehrere Ständer verteilt und so zuverlässige Rückhalteeigenschaften bereitstellt. Hierbei haben bereits relativ einfach aufgebaute und kostengünstig bereitstellbare Schutzplankenanordnungen mit einer Leitplanke, welche an einer Mehrzahl von bodenseitig festgelegten Ständern befestigt ist und diese miteinander verbindet, eine hinreichende Stabilität, um den Anforderungen in der Regel gerecht werden zu können.Such protective barrier arrangements are constructed from selectively coordinated individual elements connected in a certain way. These allow plastic deformation in certain calculable limits in order to be able to absorb the forces occurring during the impact. For this purpose, the guardrail interacts with the individual uprights, distributing impact loads over several stands and thus providing reliable restraint properties. Here are already relatively simple structure and inexpensive to provide protective barrier arrangements with a guardrail, which is attached to a plurality of bases fixed to the bottom and connects them together, a sufficient stability to meet the requirements in the rule can.

Dennoch ist es häufig gewünscht, Schutzplankenanordnungen so weiter zu bilden, dass sie höhere Aufhaltestufen nach EN 1317 erreichen können, um so die Verkehrssicherheit weiter zu erhöhen. Da derartige Schutzplankenanordnungen andererseits über viele Kilometer hinweg an Fahrbahnrändern etc. zu finden sind, spielt die Komplexität und somit der Kostenaufwand für die Bereitstellung dieser Anordnung eine erhebliche Rolle bei der Realisierbarkeit derartiger Vorhaben. Insbesondere aus Kostengründen kommt es daher durchaus auch darauf an, für jede mögliche Gefahrenstelle eine hierfür geeignete Schutzplankenanordnung bereit zu stellen, ohne dass die Kosten durch übertriebene konstruktive Ausgestaltungen in ungerechtfertigt hohe Bereiche getrieben werden.Nevertheless, it is often desirable to further develop protective barrier arrangements so that they can reach higher containment levels according to EN 1317 so as to further increase traffic safety. On the other hand, since such protective barrier arrangements over For many kilometers on the edges of the road, etc., the complexity and thus the cost of providing this arrangement plays a significant role in the feasibility of such projects. In particular, for cost reasons, it is therefore quite important to provide a suitable guard rail arrangement for each possible danger point, without the costs being driven by unreasonably large areas due to exaggerated structural designs.

Aus der DE 201 06 675 U1 ist eine Schutzplankenanordnung mit den Merkmalen des Oberbegriffs das Anspruches 1 bekannt geworden. Die vorliegende Erfindung geht von diesem Stand der Technik aus.From the DE 201 06 675 U1 is a protective barrier arrangement with the features of the preamble of claim 1 become known. The present invention is based on this prior art.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Schutzplankenanordnung derart weiterzubilden, dass deren Rückhalteeigenschaften mit geringem konstruktiven Aufwand verbessert werden.The invention has the object of developing a generic guard rail assembly such that their retention properties are improved with little design effort.

Diese Aufgabe wird durch eine Schutzplankenanordnung mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a protective barrier arrangement with the features of claim 1.

Es ist somit erfindungsgemäß vorgesehen, die Leitplanke auf der Rückseite mit einer Art Verstärkungselement zu kombinieren, welches gezielt mit seinen freien Schenkeln abstützend auf die Leitplanke einwirkt. Da diese Stützeinrichtung zugleich ebenso wie die Leitplanke die Ständer miteinander verbindet, ergibt sich insgesamt eine konstruktiv aufeinander abgestimmte Anordnung mit einer insbesondere entgegen einem zu erwarteten Aufprall besonders wirksamen Versteifung. Da dieser Versteifungseffekt nicht lokal auf eine Stelle beschränkt ist, sondern über benachbarte Ständer hinweg zum Tragen kommt, ergibt sich hiermit eine überraschend große Verbesserung der Rückhalteeigenschaften.It is thus inventively provided to combine the guardrail on the back with a kind of reinforcing element, which selectively acts with its free legs supporting the guardrail. Since this support means at the same time as the guardrail connects the stands together, the overall result is a structurally coordinated arrangement with a particularly effective against any anticipated impact stiffening. Since this stiffening effect is not locally limited to one place, but comes across adjacent stands to fruition, this results in a surprisingly large improvement in the retention properties.

Dabei hat es sich ferner gezeigt, dass eine derartige Stützeinrichtung nach Art eines Profilholms mit geringem Aufwand und kostengünstig bereitstellbar ist. Ferner ist auch der Aufwand zur Montage dieser Stützeinrichtung in einer Schutzplankenanordnung gering.It has also been found that such a support device in the manner of a profile spar with little effort and cost is available. Furthermore, the cost of mounting this support device in a protective barrier arrangement is low.

Überdies ist es somit auch problemlos möglich, bestehende Schutzplankenanordnungen mit geringem Aufwand mit der erfindungsgemäß vorgesehenen Stützeinrichtung nachzurüsten und so die Verkehrssicherheit an den gewünschten Stellen zu verbessern, sowie eventuell zwischenzeitlich verschärften Vorschriften gerecht werden zu können.Moreover, it is thus also easily possible to retrofit existing guard rail assemblies with little effort with the inventively provided support means and so improve traffic safety at the desired locations, as well as possibly strengthened in the meantime rules can meet.

Die Erfindung stellt somit eine sehr kostengünstige, leicht zu realisierende und zudem sehr effektive Verbesserung einer Schutzplankenanordnung bereit.The invention thus provides a very cost-effective, easy to implement and also very effective improvement of a protective barrier arrangement.

Hierbei ist zwar bereits aus der DE 10 2005 020 917 A1 ein auf den ersten Blick vergleichbares Stützelement bekannt geworden, welches rückseitig an der Leitplanke angeordnet ist. Dieses Stützelement ist jedoch lokal nur im Bereich der Ständer vorgesehen und läuft nicht entlang der Leitplanke durch. Die Stützelemente verbinden in diesem Stand der Technik daher nicht die Ständer. Darüber hinaus werden diese bügelförmigen Stützelemente nur im Rahmen der sehr komplexen Schutzplankenanordnung dieser bekannten Bauweise beschrieben und ausschließlich in Verbindung mit den rohrförmigen Deformationselementen eingesetzt, welche zwischen der Leitplanke und einer Trägerschiene an Ständer angeordnet sind. Die Stützelemente gemäß diesem Stand der Technik verbessern somit die Übertragung einer Aufprallenergie gerade dann, wenn der Aufprall im Bereich eines Ständers erfolgt und die Energie direkt in die Deformationselemente eingeleitet werden soll. Eine Verbesserung der Rückhalteeigenschaften ist durch die Stützelemente gemäß der DE 10 2005 020 917 A1 somit nicht erzielbar, da diese nur lokal den Ständern zugeordnet sind und nicht miteinander in Verbindung stehen. Eine Kräfteübertragung von einem Ständer auf einen benachbarten ist damit nicht möglich. Darüber hinaus verhält sich die Leitplanke in diesem Stand der Technik im Falle eines Aufpralls zwischen den Ständern völlig unbeeinträchtigt von den Stützelementen am Deformationselement. Dieser Stand der Technik konnte daher keinen Beitrag dazu leisten, zum Gegenstand der vorliegenden Erfindung zu gelangen.This is already out of the DE 10 2005 020 917 A1 a comparable at first glance support element has become known, which is arranged on the rear side of the guardrail. However, this support element is provided locally only in the area of the stand and does not run along the guard rail. The support elements therefore do not connect the stands in this prior art. In addition, these bow-shaped support elements are described only in the context of very complex guard rail assembly of this known construction and used exclusively in conjunction with the tubular deformation elements, which are arranged between the guardrail and a support rail on stand. The support elements according to this prior art thus improve the transmission of an impact energy just when the impact occurs in the region of a stand and the energy is to be introduced directly into the deformation elements. An improvement of the retention properties is achieved by the support elements according to the DE 10 2005 020 917 A1 thus not achievable, since these are assigned only locally to the stands and are not related to each other. A transfer of force from one stand to an adjacent is not possible. In addition, the guard rail behaves in this prior art in the event of an impact between the stands completely unaffected by the support elements on the deformation element. Therefore, this prior art could not contribute to the subject of the present invention.

Ferner ist es für die vorliegende Erfindung von besonderem Vorteil, dass die beiden freien Schenkel an ihren auf die Leitplanke hinweisenden Kantenabschnitten in vorbestimmten Abständen eine Aussparung aufweisen. Diese auf den ersten Blick als Schwächung erscheinende Maßnahme hat den wesentlichen Vorteil, dass das Maß einer eventuellen Biegedeformation im Zuge eines Aufpralls etc. präziser kontrollierbar und berechenbar ist. Hierbei ist zu berücksichtigen, dass eine gewisse Schwächung der Stützeinrichtung im Bereich eines Bauteilstoßes systembedingt nicht vermeidbar ist, da hier Löcher, in der Regel drei Löcher, an der Stützeinrichtung vorliegen, welche im montierten Zustand von Schrauben zur Befestigung von benachbarten Stützeinrichtung durchgriffen werden. Durch die Ausgestaltung der Aussparungen an den freien Schenkeln der Leitplanke wird dabei erreicht, dass das Biegeverhalten der Stützeinrichtung über deren gesamte Länge sowie auch über mehrere aneinander gereihte Stützeinrichtungen hinweg im Wesentlichen gleich ist. Insbesondere wird hierdurch eine planbare Biegeweichheit der Stützeinrichtung erzielt und damit eine kontrollierte Biegedeformation ermöglicht. Dabei ist die Zugtragfähigkeit bzw. die Zugbandwirkung gegenüber einer Stützeinrichtung ohne derartige Aussparungen nicht beschränkt, da das hierdurch lokal reduzierte plastische Widerstandsmoment Wpl lediglich der eigentlichen Schwachstelle an der Stoßstelle der Stützeinrichtungen angenähert ist. Durch diese Maßnahme zeigt die Stützeinrichtung somit im Wesentlichen über die gesamte Länge hinweg gleiche Verformungseigenschaften und erleichtert daher die Berechenbarkeit der Anordnung, was sich wiederum auf den Aufwand für eine Dimensionierung einer derartigen Schutzplankenanordnung vorteilhaft auswirkt.Furthermore, it is of particular advantage for the present invention that the two free legs at their pointing to the guardrail edge portions in have predetermined intervals a recess. This measure, which at first glance appears to be weakening, has the significant advantage that the degree of possible bending deformation in the course of an impact, etc., is more precisely controllable and calculable. It should be noted that a certain weakening of the support device in the region of a component body due to the system is unavoidable, since there are holes, usually three holes on the support means, which are penetrated in the assembled state of screws for attachment of adjacent support means. The configuration of the recesses on the free legs of the guardrail thereby ensures that the bending behavior of the support means over its entire length as well as over a plurality of juxtaposed support means of time is substantially the same. In particular, a predictable flexural softness of the support device is thereby achieved, thus allowing a controlled bending deformation. The Zugtragfähigkeit or Zugbandwirkung compared to a support device without such recesses is not limited, since the locally reduced plastic resistance moment Wpl is only approximated to the actual vulnerability at the junction of the support means. By virtue of this measure, the support device thus exhibits essentially the same deformation properties over the entire length and therefore facilitates the predictability of the arrangement, which in turn has an advantageous effect on the expenditure for dimensioning such a protective barrier arrangement.

Vorteilhafte Weiterbildungen der erfindungsgemäßen Schutzplankenanordnung sind Gegenstand der abhängigen Ansprüche.Advantageous developments of the protective barrier arrangement according to the invention are the subject of the dependent claims.

So ist es von Vorteil, wenn die Aussparung als Dreieckskerbe ausgebildet ist, da sich eine derartige Konfiguration mit geringem Aufwand herstellen lässt und das System einfach kalkulierbar ist.Thus, it is advantageous if the recess is designed as a triangular notch, since such a configuration can be produced with little effort and the system is easily calculable.

Von weiterem Vorteil ist es, wenn die Stützeinrichtung einen im Wesentlichen U-förmigen Querschnitt mit den beiden freien Schenkeln und einem Verbindungssteg derart aufweist, dass ein Innenwinkel zwischen den beiden freien Schenkeln und dem Verbindungssteg der Stützeinrichtung jeweils zwischen 90° und 110° beträgt. Hier hat sich gezeigt, dass mit einer derartigen Ausrichtung der freien Schenkel gegenüber dem Verbindungssteg eine besonders zuverlässige Abstützung der Leitplanke erzielt wird. Darüber hinaus lässt sich eine derart ausgestaltete Stützeinrichtung problemlos und ohne weiteren Bearbeitungsaufwand an unterschiedlichen Arten von Leitplanken einsetzen, wie am so genannte SP-Holm Profil A oder SP-Holm Profil B. Durch diese vielfältigen Einsatzmöglichkeiten, lässt sich die erfindungsgemäß vorgesehene Stützeinrichtung zudem in großer Stückzahl und daher besonders kostengünstig bereitstellen.It is a further advantage if the support device has a substantially U-shaped cross section with the two free legs and a connecting web such that an internal angle between the two free legs and the connecting web of the support device is between 90 ° and 110 °. Here has It has been shown that with such an orientation of the free legs relative to the connecting web a particularly reliable support of the guardrail is achieved. In addition, such a support device designed in such a way can easily and without further processing effort on different types of crash barriers used, such as the so-called SP-spar profile A or SP-spar profile B. These varied uses, the inventively provided support means also in large Quantity and therefore provide particularly cost.

Hierbei ist es insbesondere auch möglich, dass der Innenwinkel zwischen den beiden freien Schenkeln und dem Verbindungssteg der Stützeinrichtung jeweils zwischen 95° und 100° beträgt. In praktischen Versuchen hat sich hier eine derartige Konfiguration als besonders vorteilhaft im Hinblick auf die Rückhalteeigenschaften erwiesen. Besonders bevorzugt ist dabei ein Winkel von 96°, bei dem sowohl eine einfache Montage der Anordnung ohne störende Relation zu anderen Elementen an der Schutzplankenanordnung als auch eine vielseitige Verwendbarkeit möglich ist.In this case, it is also possible in particular for the inner angle between the two free legs and the connecting web of the support device to be respectively between 95 ° and 100 °. In practical experiments, such a configuration has proven to be particularly advantageous in terms of retention properties. Particularly preferred is an angle of 96 °, in which both a simple assembly of the arrangement without disturbing relation to other elements on the guard rail assembly and a versatility is possible.

Ferner kann der jeweilige Innenwinkel zwischen den freien Schenkeln und dem Verbindungssteg der Stützeinrichtung gleich groß sein. Durch eine derartige symmetrische Ausgestaltung lässt sich die Stützeinrichtung besonders einfach bereitstellen und zuverlässig fehlerfrei montieren.Furthermore, the respective inner angle between the free legs and the connecting web of the support means can be the same size. By such a symmetrical configuration, the support means can be particularly easy to deploy and reliably assembled error-free.

Die Erfindung wird nachfolgend in Ausführungsbeispielen anhand der Figuren der Zeichnung näher erläutert. Es zeigt:

Fig. 1
eine schematische Seitenansicht einer erfindungsgemäßen Schutzplankenanordnung in einer ersten Ausführungsform;
Fig. 2
eine schematische Seitenansicht einer erfindungsgemäßen Schutzplankenanordnung in einer zweiten Ausführungsform;
Fig. 3
eine perspektivische Ansicht einer Stützeinrichtung;
Fig. 4
ein Detail der Stützeinrichtung gemäß Fig. 3;
Fig. 5
eine Seitenansicht der Stützeinrichtung;
Fig. 6
einen Querschnitt durch die Stützeinrichtung;
Fig. 7
einen für eine Vergleichsberechnung schematisierten Querschnitt einer Stützeinrichtung in einem Bereich ohne Aussparungen an den Kantenabschnitten der Schenkel; und
Fig. 8
einen für eine Vergleichsberechnung schematisierten Querschnitt einer Stützeinrichtung in einem Bereich mit Dreieckskerben.
The invention will be explained in more detail in exemplary embodiments with reference to the figures of the drawing. It shows:
Fig. 1
a schematic side view of a protective barrier arrangement according to the invention in a first embodiment;
Fig. 2
a schematic side view of a guard rail assembly according to the invention in a second embodiment;
Fig. 3
a perspective view of a support means;
Fig. 4
a detail of the support device according to Fig. 3 ;
Fig. 5
a side view of the support means;
Fig. 6
a cross section through the support means;
Fig. 7
a cross-section of a support device in a region without recesses at the edge portions of the legs, schematized for a comparison calculation; and
Fig. 8
a cross-section of a support device in a region with triangular notches, schematized for a comparison calculation.

Gemäß der Darstellung in Fig. 1 weist eine Schutzplankenanordnung 1 in einer ersten Ausführungsform Ständer 2 auf, wobei eine Mehrzahl derartiger Ständer in der Praxis nebeneinander aufgereiht ist. Die Ständer 2 tragen eine Leitplanke 3, welche mittels einer Halteeinrichtung 4 am jeweiligen Ständer 2 befestigt ist. Zwischen der Halteeinrichtung 4 und der Leitplanke 3 ist ferner eine Stützeinrichtung 5 angeordnet. Die Stützeinrichtung 5 sowie die Leitplanke 3 sind mittels einer Schraubverbindung 6 an der Halteeinrichtung 4 befestigt. Die Leitplanke 3 gemäß Fig. 1 weist eine im Wesentlichen M-förmige Gestalt auf, welche als so genanntes A-Profil bezeichnet wird.As shown in Fig. 1 has a guard rail assembly 1 in a first embodiment stand 2, wherein a plurality of such stand in practice is lined up next to each other. The stand 2 carry a guardrail 3, which is fixed by means of a holding device 4 on the respective stand 2. Between the holding device 4 and the guardrail 3, a support means 5 is also arranged. The support device 5 and the guardrail 3 are fastened by means of a screw 6 to the holding device 4. The guardrail 3 according to Fig. 1 has a substantially M-shaped shape, which is referred to as so-called A-profile.

In Fig. 2 ist eine abgewandelte Ausführungsform einer Schutzplankenanordnung 1' gezeigt, welche sich von der Schutzplankenanordnung 1 gemäß Fig. 1 lediglich in der Gestalt der Leitplanke unterscheidet. Die in Fig. 2 gezeigte Leitplanke 3' weist eine etwas andere Querschnittsgestalt als die Leitplanke 3 auf und wird in der Praxis als so genanntes B-Profil bezeichnet.In Fig. 2 a modified embodiment of a guard rail assembly 1 'is shown, which differs from the guard rail assembly 1 according to Fig. 1 only different in the shape of the guardrail. In the Fig. 2 shown guardrail 3 'has a slightly different cross-sectional shape than the guardrail 3 and is referred to in practice as so-called B-profile.

In der Praxis wird die für den jeweiligen Einsatzort geeignete Profilart der Leitplanke aus den bekannten Variationsmöglichkeiten gewählt.In practice, the profile type of the guardrail suitable for the respective location is selected from the known variation possibilities.

In den Fig. 3 bis 6 ist die Stützeinrichtung 5 in näherem Detail gezeigt. Wie insbesondere aus Fig. 3 erkennbar ist, ist die Stützeinrichtung 5 nach Art eines Profilholms ausgebildet und weist einen im Wesentlichen U-förmigen Querschnitt auf. Dementsprechend hat die Stützeinrichtung 5 zwei freie Schenkel 51 und 52, welche über einen Verbindungssteg 53 miteinander verbunden sind.In the Fig. 3 to 6 the support means 5 is shown in more detail. As in particular from Fig. 3 can be seen, the support means 5 is formed in the manner of a profile spar and has a substantially U-shaped cross-section. Accordingly, the support means 5 has two free legs 51 and 52, which are connected to each other via a connecting web 53.

Im Verbindungssteg 53 sind ferner Langlöcher 54 in einem vorbestimmten Abstand zueinander ausgebildet, wie insbesondere aus den Figuren 3 bis 5 ersichtlich ist. Der Abstand dieser Langlöcher 54 entspricht dem Abstand der Ständer 2. Die Schraubverbindung 6 zur Befestigung der Stützeinrichtung 5 zusammen mit der Leitplanke 3 bzw. 3' an der Halteeinrichtung 4 erfolgt durch diese Langlöcher 54 hindurch.In the connecting web 53 slots 54 are further formed at a predetermined distance from each other, in particular from the FIGS. 3 to 5 is apparent. The distance between these slots 54 corresponds to the distance of the stand 2. The screw 6 for attachment of the support means 5 together with the guardrail 3 and 3 'on the holding device 4 takes place through these elongated holes 54 therethrough.

Wie insbesondere aus Fig. 4 in näherem Detail erkennbar ist, weisen die beiden freien Schenkel 51 und 52 an ihren freien Kantenabschnitten, welche im montierten Zustand auf die Leitplanke 3 bzw. 3' hinweisen, in vorbestimmten Abständen eine Aussparung bzw. Ausklinkung in Gestalt einer Dreieckskerbe 55 auf. Mittels dieser Dreieckskerben 55 wird das plastische Widerstandsmoment in diesem Bereich reduziert, wodurch das Verformungsverhalten der Stützeinrichtung 5 im Falle eines Aufpralls verbessert wird und die Ableitung der Aufprallenergie noch besser gesteuert werden kann. Somit ist eine kontrollierte Biegedeformation möglich.As in particular from Fig. 4 can be seen in more detail, the two free legs 51 and 52 at their free edge portions, which point to the guardrail 3 and 3 'in the mounted state, at predetermined intervals, a recess or notch in the form of a triangle notch 55. By means of these triangular notches 55, the plastic resistance moment is reduced in this area, whereby the deformation behavior of the support means 5 in the event of an impact is improved and the derivative of the impact energy can be controlled even better. Thus, a controlled bending deformation is possible.

Wie aus den Figuren ferner erkennbar ist, sind die Dreieckskerben 55 dabei jeweils im Querschnitt benachbart zu einem Langloch 54 angeordnet.As can also be seen from the figures, the triangular notches 55 are each arranged in cross section adjacent to a slot 54.

Wie aus Fig. 5 ersichtlich ist, weist die Stützeinrichtung 5 an ihren Enden jeweils eine Mehrzahl von Befestigungslöchern 56 auf, mittels denen mehrere Stützeinrichtungen 5 entlang der Schutzplankenanordnung 1 bzw. 1' aneinander gekoppelt werden können. Die Befestigungslöcher 56 sind dabei versetzt zu den Langlöchern 54 angeordnet, um ein störendes Ineinandergreifen von Elementen und insbesondere der Schraubverbindungselemente zu vermeiden.How out Fig. 5 can be seen, the support means 5 at their ends in each case a plurality of mounting holes 56, by means of which a plurality of support means 5 along the guard rail assembly 1 and 1 'can be coupled to each other. The mounting holes 56 are offset from the slots 54 arranged to avoid interference of elements and in particular the screw connection elements.

In Fig. 6 ist ein Querschnitt durch die Stützeinrichtung 5 gezeigt. Wie hieraus insbesondere ersichtlich ist, weisen die beiden Schenkel 51 und 52 gegenüber dem Verbindungssteg 53 jeweils einen Innenwinkel α bzw. β auf, welcher im gezeigten Ausführungsbeispiel gleich groß ist und etwa 96° beträgt. Dieser Winkel hat sich als besonders günstig erwiesen, um eine zuverlässige Aufnahme von Aufprallenergien zu erzielen und gleichzeitig verschiedene Formen von Leitplanken 3 bzw. 3' mit einer einzigen Stützeinrichtung 5 kombinieren zu können.In Fig. 6 a cross section through the support means 5 is shown. As can be seen in particular from this, the two legs 51 and 52 each have an internal angle α or β relative to the connecting web 53, which in the exemplary embodiment shown is the same size and is approximately 96 °. This angle has proven to be particularly favorable to a reliable absorption of impact energy achieve and at the same time be able to combine different forms of crash barriers 3 and 3 'with a single support means 5.

Durch die in regelmäßigen Abständen von beispielsweise 666,7 mm bei einer Gesamtlänge von 4300 mm einer Stützeinrichtung vorliegenden Aussparungen in Gestalt der Dreieckskerben 55 wird eine planmäßige Biegeweichheit der Stützeinrichtung erzeugt und damit eine kontrollierte Biegedeformation bei einem Anprall ermöglicht, ohne dass dabei die Zugtragfähigkeit bzw. die Zugbandwirkung nennenswert eingeschränkt werden würde, da der verbleibende Nettoquerschnitt hier im Vergleich zum Nettoquerschnitt im Bereich des Holmstoßes nahezu unverändert ist.By the regular intervals of, for example, 666.7 mm with a total length of 4300 mm of a support present recesses in the form of triangular notches 55 a systematic flexural softness of the support device is generated, thus allowing a controlled bending deformation in an impact, without affecting the Zugtragfähigkeit or The tension band effect would be significantly restricted, since the remaining net cross-section here is virtually unchanged compared to the net cross-section in the region of the spar thrust.

In der nachfolgenden Tabelle ist in Verbindung mit den Figuren 7 und 8 ein Vergleichsbeispiel zwischen dem Querschnitt einer Stützeinrichtung in einem Bereich ohne Aussparungen an den Kantenabschnitten der Schenkel (Fig. 7) und in einem Bereich der Stützeinrichtung mit Dreieckskerben 55 (Fig. 8) angegeben.In the following table is in connection with the FIGS. 7 and 8 a comparative example between the cross section of a support device in a region without recesses at the edge portions of the legs ( Fig. 7 ) and in a region of the supporting device with triangular notches 55 (FIG. Fig. 8 ).

In diesem Ausführungsbeispiel ist eine Stützeinrichtung aus Stahl S235 mit einer Materialstärke von 3 mm eingesetzt. Der Verbindungssteg 53 weist hier ein Außenmaß von ca. 153 mm auf und die beiden Schenkel 51 bzw. 52 stehen außenseitig etwa 78 mm hiervon vor. Der Innenradius zwischen dem Verbindungssteg 53 und den beiden Schenkeln 51 bzw. 52 beträgt ca. 5 mm. Die Dreieckskerben 55 sind in diesem Beispiel ca. 20 mm breit und ebenso tief.In this embodiment, a supporting device made of steel S235 with a material thickness of 3 mm is used. The connecting web 53 here has an outer dimension of about 153 mm and the two legs 51 and 52 are on the outside about 78 mm thereof before. The inner radius between the connecting web 53 and the two legs 51 and 52 is about 5 mm. The triangular notches 55 are in this example about 20 mm wide and also deep.

In der Tabelle sind die maßgebenden plastischen Grenztragfähigkeiten angegeben. Wesentlich für die Wirkungsweise sind dabei die Biegung um die schwache Achse (Mpl,z), d.h. das theoretische Bruchmoment unter Biegebeanspruchung, und die Normalkraft im Nettoquerschnitt (Npl,n), d.h. die theoretische Bruchlast unter Zugbeanspruchung.The table shows the relevant plastic limit capacities. Essential for the operation are the bending around the weak axis (Mpl, z), i. the theoretical breaking moment under bending stress, and the normal force in the net cross section (Npl, n), i. the theoretical breaking load under tensile stress.

Der Nettoquerschnitt ergibt sich beim ungeschwächten Querschnitt (Fig. 7) durch die Querschnittsfläche abzüglich der Lochung am Holmstoß (3 * Durchmesser 18 mm), sowie beim geschwächten Querschnitt (Fig. 8) durch die aufgrund der Dreieckskerben 55 geschwächte Querschnittsfläche abzüglich der Lochung für das Langloch (1 * Breite 18 mm). Ungeschwächter Querschnitt gemäß Fig. 7 Geschwächter Querschnitt gemäß Fig. 8 DZ 16,74 16,30 DY 7,72 5,72 Querschnittsfläche A [cm2] 9,00 7,79 Plastisches Moment Mpl,y [kNm] 18,7 15,2 Plastisches Moment Mpl,z [kNm] 6,2 3,4 Plastische Querkraft Vpl,y [kN] 58,1 37,0 Plastische Querkraft Vpl,z [kN] 82,6 85,4 Plastische Normalkraft Npl [kN] 323,9 280,4 Infolge Lochung bzw. Aussparung reduzierte maßgebliche Querschnittsfläche 9,00 - 3 * 0,3 * 1,8 = 7,38 7,79 - 1 * 0,3 * 1,8 = 7,25 Npl im Nettoquerschnitt Npl,n [kN] 265,6 261,0 Plastisches Wölbmoment Mwpl [kNm2] 0,77 0,47 The net cross section results in the unattenuated cross section ( Fig. 7 ) by the cross-sectional area minus the perforation at the spar joint (3 * diameter 18 mm), as well as the weakened cross-section ( Fig. 8 ) due to the triangular notches 55 weakened cross-sectional area less the hole for the slot (1 * width 18 mm). Unguarded cross-section according to Fig. 7 Slowed cross section according to Fig. 8 DZ 16.74 16.30 DY 7.72 5.72 Cross-sectional area A [cm 2 ] 9.00 7.79 Plastic moment Mpl, y [kNm] 18.7 15.2 Plastic moment Mpl, z [kNm] 6.2 3.4 Plastic shear force Vpl, y [kN] 58.1 37.0 Plastic shear force Vpl, z [kN] 82.6 85.4 Normal plastic force Npl [kN] 323.9 280.4 As a result of punching or recess reduced significant cross-sectional area 9.00 - 3 * 0.3 * 1.8 = 7.38 7.79 - 1 * 0.3 * 1.8 = 7.25 Npl in net cross section Npl, n [kN] 265.6 261.0 Plastic bulging moment Mwpl [kNm 2 ] 0.77 0.47

Aus der Tabelle ist zu entnehmen, dass sich durch die Aussparung die plastische Momententragfähigkeit von 6,2 kNm auf 3,4 kNm reduziert, während die plastische Normalkraft im Nettoquerschnitt dagegen nur von 265,6 kN auf 261 kN abnimmt, also in etwa unverändert ist.It can be seen from the table that the plastic moment load capacity is reduced from 6.2 kNm to 3.4 kNm by the recess, whereas the plastic normal force in the net cross section only decreases from 265.6 kN to 261 kN, ie is approximately unchanged ,

Die Erfindung lässt neben den erläuterten Ausführungsformen weitere Gestaltungsansätze zu.The invention allows, in addition to the illustrated embodiments, further design approaches.

So lässt sich die Stützeinrichtung 5 auch mit anderen Arten von Leitplanken als den in den Figuren 1 und 2 gezeigten kombinieren.Thus, the support means 5 can also be used with other types of crash barriers than those in the FIGS. 1 and 2 combine shown.

Ferner ist auch die Querschnittsgestalt der Stützeinrichtung 5 nicht auf die im Wesentlichen U-förmige Ausführungsform beschränkt. Vielmehr ist es bspw. auch möglich, an den Schenkeln 51 und 52 abgewinkelte Fortsätze anzuordnen, mittels denen Abstützflächen an der Rückseite der Leitplanke bereit gestellt werden.Furthermore, the cross-sectional shape of the support means 5 is not limited to the substantially U-shaped embodiment. Rather, it is, for example, also possible to arrange on the legs 51 and 52 angled extensions, by means of which support surfaces are provided on the back of the guardrail ready.

Der Innenwinkel α bzw. β der Schenkel 51 und 52 gegenüber dem Verbindungssteg 53 ist nicht auf die hier erläuterten 96° beschränkt und kann je nach Einsatzfall und Gestalt der verwendeten Leitplanke variieren. Bevorzugt liegt der Innenwinkel in einem Bereich zwischen 90° und 110°, wobei auch hiervon abweichende Winkel möglich sind.The inner angle α or β of the legs 51 and 52 relative to the connecting web 53 is not limited to the 96 ° explained here and may vary depending on the application and shape of the guardrail used. Preferably, the inner angle is in a range between 90 ° and 110 °, whereby also deviating angles are possible.

Ferner ist es auch nicht zwingend erforderlich, dass die beiden Innenwinkel α und β identisch ausgebildet sind.Furthermore, it is also not absolutely necessary that the two inner angles α and β are identical.

Anstelle der Dreieckskerben 55 können zudem auch andere geometrische Gestalten für eine Aussparung treten, wie bspw. halbrunde Aussparungen oder rechteckige. Insbesondere ist es auch möglich, in einer vereinfachten Ausführungsform auf eine derartige Aussparung, d.h. auf die Dreieckskerben 55 gänzlich zu verzichten.In place of the triangular notches 55, other geometric shapes can also be used for a recess, such as semicircular recesses or rectangular ones. In particular, it is also possible, in a simplified embodiment, to have such a recess, i. to abandon the triangular notches 55 entirely.

Claims (5)

  1. Protective barrier arrangement (1; 1') for roadways, in particular for use on the side of the roadway, on the central reservation or to safeguard danger spots, having:
    a plurality of posts (2) fixed on the ground side, and
    a crash barrier (3; 3') which is attached to the posts (2) and by means of which the posts (2) are connected to one another,
    wherein the protective barrier arrangement (1; 1') also has a support device (5) for supporting the crash barrier (3; 3') on the side facing away from a danger spot,
    wherein the support device (5) is designed as a profiled crossbeam and connects the posts (2) to one another, and
    wherein the support device (5) has two free limbs (51, 52) which are aligned in the direction of the crash barrier (3; 3') and support the latter on the rear side,
    characterised in that the two free limbs (51, 52) have a recess at predetermined intervals on their edge sections pointing towards the crash barrier (3; 3').
  2. Protective barrier arrangement according to claim 1, characterised in that the recess is designed as a triangular notch (55).
  3. Protective barrier arrangement according to claim 1 or 2, characterised in that the support device (5) has an essentially U-shaped cross-section with the two free limbs (51, 52) and a connecting bar (53) such that an interior angle (α, β) between the two free limbs (51, 52) and the connecting bar (53) of the support device (5) is in each case between 90° and 110°.
  4. Protective barrier arrangement according to claim 3, characterised in that the interior angle (α, β) between the two free limbs (51, 52) and the connecting bar (53) of the support device (5) is in each case between 95° and 100° and preferably lies at about 96°.
  5. Protective barrier arrangement according to claim 3 or 4, characterised in that the particular interior angle (α, β) between the free limbs (51, 52) and the connecting bar (53) of the support device (5) is the same size.
EP08009861A 2007-06-12 2008-05-29 Crash barrier assembly Active EP2017387B1 (en)

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PL08009861T PL2017387T3 (en) 2007-06-12 2008-05-29 Crash barrier assembly

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DE102007026919A DE102007026919A1 (en) 2007-06-12 2007-06-12 Guard rail arrangement

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EP2017387A1 EP2017387A1 (en) 2009-01-21
EP2017387B1 true EP2017387B1 (en) 2009-12-02

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EP (1) EP2017387B1 (en)
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DE (3) DE202007017491U1 (en)
DK (1) DK2017387T3 (en)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013162483A1 (en) 2012-04-24 2013-10-31 Tekin Ve Emir Yatirim Insaat Limited Sirketi Abacus barrier

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009003752U1 (en) 2009-03-17 2009-05-20 Studiengesellschaft Für Stahlschutzplanken E.V. Guard rail system for roadways and transitional structure for this purpose
SI24396A (en) * 2013-06-10 2014-12-31 Kveder D.O.O. Steel road restraint with a trapezoidal reinforcement

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
AT279663B (en) * 1966-12-16 1970-03-10 Sina In Nat Autostradali Road guardrail
AT4689U1 (en) * 1999-10-22 2001-10-25 Voest Alpine Krems Finaltech GUIDE RAIL AND GUIDE DEVICE WITH SUCH A GUIDE RAIL
DE20106675U1 (en) * 2001-04-19 2001-06-21 Spig Schutzplanken Prod Gmbh Guardrail arrangement for motor vehicle-lined roadways lined with trees or similar objects
DE10345847A1 (en) * 2003-09-30 2005-04-14 TOGE-Dübel A. Gerhard KG Guardrail posts
DE102004039792B4 (en) * 2004-08-16 2007-01-11 Spig Schutzplanken-Produktions-Gesellschaft Mbh & Co. Kg crash barrier
DE102005020917A1 (en) 2005-05-04 2006-11-09 Studiengesellschaft für Stahlschutzplanken eV Guard rail arrangement
DE202006015149U1 (en) * 2006-09-29 2006-12-14 Spig Schutzplanken-Produktions-Gesellschaft Mbh & Co. Kg Protective barrier comprises bars provided on the side facing the columns with stiffening rails with trapezium cross section

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013162483A1 (en) 2012-04-24 2013-10-31 Tekin Ve Emir Yatirim Insaat Limited Sirketi Abacus barrier

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DK2017387T3 (en) 2010-04-19
DE502008000221D1 (en) 2010-01-14
PL2017387T3 (en) 2010-06-30
EP2017387A1 (en) 2009-01-21
ATE450660T1 (en) 2009-12-15
DE102007026919A1 (en) 2009-01-02
ES2337627T3 (en) 2010-04-27

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