EP2017387A1 - Crash barrier assembly - Google Patents
Crash barrier assembly Download PDFInfo
- Publication number
- EP2017387A1 EP2017387A1 EP08009861A EP08009861A EP2017387A1 EP 2017387 A1 EP2017387 A1 EP 2017387A1 EP 08009861 A EP08009861 A EP 08009861A EP 08009861 A EP08009861 A EP 08009861A EP 2017387 A1 EP2017387 A1 EP 2017387A1
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- EP
- European Patent Office
- Prior art keywords
- support means
- guard rail
- guardrail
- support
- legs
- 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.)
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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
- E01F15/0461—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 at the edge of the road, at the median strip or for the protection of danger spots, with a plurality of bases fixed at the bottom and a guardrail, which is attached to the uprights and by means of which the stands are connected to each other.
- 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 is therefore the object of developing a generic guard rail assembly such that their retention properties are improved with little design effort.
- a protective barrier arrangement with the features of claim 1.
- This is characterized in particular by the fact that it has a support means for supporting the guardrail on the side facing away from a danger point, wherein the support means is designed as a profile spar and the stand connects to each other, and wherein the support means comprises two free legs, which in the direction of the guardrail aligned and support these back.
- 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 may have at their pointing to the guardrail edge portions at 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.
- 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.
- this achieves a plannable bending softness of the support device and thus enables a controlled bending deformation.
- the Buchtragrien 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 weak point at the joint 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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Abstract
Description
Die Erfindung betrifft eine Schutzplankenanordnung für Fahrbahnen, insbesondere für den Einsatz am Fahrbahnrand, am Mittelstreifen oder zur Absicherung von Gefahrenstellen, mit einer Mehrzahl von bodenseitig festgelegten Ständern und einer Leitplanke, welche an den Ständern befestigt ist und mittels welcher die Ständer miteinander verbunden sind.The invention relates to a guard rail arrangement for roadways, in particular for use at the edge of the road, at the median strip or for the protection of danger spots, with a plurality of bases fixed at the bottom and a guardrail, which is attached to the uprights and by means of which the stands are connected to each other.
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 desired to further develop protective barrier arrangements so that they can reach higher containment levels according to EN 1317, thus ensuring road safety continue to increase. On the other hand, since such protective barrier arrangements can be found over many kilometers at 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.
Der Erfindung liegt daher die Aufgabe zugrunde, eine gattungsgemäße Schutzplankenanordnung derart weiterzubilden, dass deren Rückhalteeigenschaften mit geringem konstruktiven Aufwand verbessert werden.The invention is therefore 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. Diese zeichnet sich insbesondere dadurch aus, dass sie eine Stützeinrichtung zur Abstützung der Leitplanke auf der einer Gefahrenstelle abgewandten Seite aufweist, wobei die Stützeinrichtung als Profilholm ausgebildet ist und die Ständer miteinander verbindet, und wobei die Stützeinrichtung zwei freie Schenkel aufweist, welche in Richtung zur Leitplanke ausgerichtet sind und diese rückseitig abstützen.This object is achieved by a protective barrier arrangement with the features of
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. Further is also the cost of mounting this support device in a protective barrier arrangement 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
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 können 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.Thus, the two free legs may have at their pointing to the guardrail edge portions at 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, this achieves a plannable bending softness of the support device and thus enables 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 weak point at the joint 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.
Dabei ist es von weiterem Vorteil, wenn die Aussparung als Dreieckskerbe ausgebildet ist, da sich eine derartige Konfiguration mit geringem Aufwand herstellen lässt und das System einfach kalkulierbar ist.It is of further advantage 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.
- 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
In
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
Im Verbindungssteg 53 sind ferner Langlöcher 54 in einem vorbestimmten Abstand zueinander ausgebildet, wie insbesondere aus den
Wie insbesondere aus
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
Wie aus
In
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
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
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 (
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
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
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
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
Claims (6)
dass die Schutzplankenanordnung (1; 1') ferner eine Stützeinrichtung (5) zur Abstützung der Leitplanke (3; 3') auf der einer Gefahrenstelle abgewandten Seite aufweist,
wobei die Stützeinrichtung (5) als Profilholm ausgebildet ist und die Ständer (2) miteinander verbindet, und
wobei die Stützeinrichtung (5) zwei freie Schenkel (51, 52) aufweist, welche in Richtung zur Leitplanke (3; 3') hin ausgerichtet sind und diese rückseitig abstützen.Guard rail arrangement (1, 1 ') for roadways, in particular for use at the edge of the road, at the median strip or for the protection of danger spots, with:
in that the protective barrier arrangement (1; 1 ') furthermore has support means (5) for supporting the guardrail (3; 3') on the side facing away from a danger spot,
wherein the support means (5) is formed as a profile spar and the stand (2) connects to each other, and
wherein the support means (5) has two free legs (51, 52) which are aligned in the direction of the guardrail (3, 3 ') and support the latter at the rear.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08009861T PL2017387T3 (en) | 2007-06-12 | 2008-05-29 | Crash barrier assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007026919A DE102007026919A1 (en) | 2007-06-12 | 2007-06-12 | Guard rail arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2017387A1 true EP2017387A1 (en) | 2009-01-21 |
EP2017387B1 EP2017387B1 (en) | 2009-12-02 |
Family
ID=39731355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP08009861A Active EP2017387B1 (en) | 2007-06-12 | 2008-05-29 | Crash barrier assembly |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2017387B1 (en) |
AT (1) | ATE450660T1 (en) |
DE (3) | DE202007017491U1 (en) |
DK (1) | DK2017387T3 (en) |
ES (1) | ES2337627T3 (en) |
PL (1) | PL2017387T3 (en) |
Families Citing this family (3)
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 |
WO2013162483A1 (en) | 2012-04-24 | 2013-10-31 | Tekin Ve Emir Yatirim Insaat Limited Sirketi | Abacus barrier |
SI24396A (en) * | 2013-06-10 | 2014-12-31 | Kveder D.O.O. | Steel road restraint with a trapezoidal reinforcement |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20017123U1 (en) * | 1999-10-22 | 2000-12-21 | Voest Alpine Krems Finaltech | Guardrail belt and guide device with such a guardrail belt |
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 |
EP1627956A1 (en) * | 2004-08-16 | 2006-02-22 | SPIG Schutzplanken-Produktions-Gesellschaft mbH & Co.KG | Guardrail road 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 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT279663B (en) * | 1966-12-16 | 1970-03-10 | Sina In Nat Autostradali | Road guardrail |
DE10345847A1 (en) * | 2003-09-30 | 2005-04-14 | TOGE-Dübel A. Gerhard KG | Guardrail posts |
-
2007
- 2007-06-12 DE DE202007017491U patent/DE202007017491U1/en not_active Expired - Lifetime
- 2007-06-12 DE DE102007026919A patent/DE102007026919A1/en not_active Withdrawn
-
2008
- 2008-05-29 AT AT08009861T patent/ATE450660T1/en active
- 2008-05-29 DE DE502008000221T patent/DE502008000221D1/en active Active
- 2008-05-29 EP EP08009861A patent/EP2017387B1/en active Active
- 2008-05-29 PL PL08009861T patent/PL2017387T3/en unknown
- 2008-05-29 DK DK08009861.9T patent/DK2017387T3/en active
- 2008-05-29 ES ES08009861T patent/ES2337627T3/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20017123U1 (en) * | 1999-10-22 | 2000-12-21 | Voest Alpine Krems Finaltech | Guardrail belt and guide device with such a guardrail belt |
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 |
EP1627956A1 (en) * | 2004-08-16 | 2006-02-22 | SPIG Schutzplanken-Produktions-Gesellschaft mbH & Co.KG | Guardrail road 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 |
Also Published As
Publication number | Publication date |
---|---|
PL2017387T3 (en) | 2010-06-30 |
ES2337627T3 (en) | 2010-04-27 |
DE102007026919A1 (en) | 2009-01-02 |
DK2017387T3 (en) | 2010-04-19 |
DE202007017491U1 (en) | 2008-03-06 |
ATE450660T1 (en) | 2009-12-15 |
DE502008000221D1 (en) | 2010-01-14 |
EP2017387B1 (en) | 2009-12-02 |
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