EP1739235B1 - Restraint system - Google Patents

Restraint system Download PDF

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EP1739235B1
EP1739235B1 EP06114995A EP06114995A EP1739235B1 EP 1739235 B1 EP1739235 B1 EP 1739235B1 EP 06114995 A EP06114995 A EP 06114995A EP 06114995 A EP06114995 A EP 06114995A EP 1739235 B1 EP1739235 B1 EP 1739235B1
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EP
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Prior art keywords
restraint system
concrete wall
layer
protective concrete
support layer
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EP06114995A
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German (de)
French (fr)
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EP1739235A3 (en
EP1739235A2 (en
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Ulrich Sasse
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TSS Technische Sicherheits-Systeme GmbH
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TSS Technische Sicherheits-Systeme GmbH
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Priority to SI200630300T priority Critical patent/SI1739235T1/en
Priority to PL06114995T priority patent/PL1739235T3/en
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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
    • E01F15/0476—Foundations
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
    • E01F15/081—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material
    • E01F15/083—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material using concrete

Definitions

  • the invention relates to a restraint system for motor vehicles, which is provided at a roadway boundary.
  • Graded concrete protection walls are subject to DIN EN 1317-2 of April 1998. DIN defines different requirements, in particular with regard to the retention of lorries. For example, in the case of a requirement for H2 according to the above standard, trucks up to a total weight of 15 tons must be withheld.
  • a concrete protection wall meeting the requirement H2 is in " Road Traffic Engineering "3/99, pp. 120-123 described.
  • the profile of this concrete protective wall has a lower step with a height of approx. 250 mm and a deviation from the vertical of approx. 9 °, a middle step with a height of approx. 50 mm and a deviation from the vertical of approx. 50 ° and an upper step with a height of 600 mm and a deviation from the vertical of about 9 °.
  • the width of the top of this concrete protection wall is about 200 mm.
  • the total height of this concrete protection wall is thus approx. 900 mm.
  • the object of the invention is to provide a restraint system for motor vehicles, which has a containment level of at least H2 and is easy and inexpensive to produce.
  • the restraint system for motor vehicles has a stepped concrete protective wall.
  • the concrete protection wall has at least two, preferably three stages.
  • the upper stage here has a smaller average width than the lower stage. If the concrete protection wall has more than two stages, the average width of the steps decreases from bottom to top.
  • the outer walls are inclined with respect to a vertical, wherein the inclination of the side facing the road facing away from the bottom, pointing away from the roadway.
  • the restraint system according to the invention thus has a roadway-independent, compacted, formed as an unbound support layer uprising element on which the concrete protective wall is placed.
  • Restraint systems according to the invention have the particular advantage that they can be produced considerably less expensively, since unbound support layers, for example, can only be produced by solidifying suitable materials such as gravel, gravel and / or recycling materials.
  • suitable materials such as gravel, gravel and / or recycling materials.
  • the particular prefabricated concrete protection walls can thus be placed on the uprising element in a simple manner. Clamping in the road or anchoring in the ground is not required. The installation of such concrete protection walls is therefore considerably cheaper.
  • the restraint system for motor vehicles which is provided on road boundaries, in a particularly preferred embodiment, a stepped concrete protection wall whose first stage has a height of 150 - 250 mm and preferably a deviation from the vertical of 8 - 10 °.
  • a middle step has a height of 40-60 mm, preferably of about 50 mm and preferably a deviation from the vertical of about 50 °.
  • An upper step has a height of 600-700 mm and preferably a deviation from the vertical of 8-10 °.
  • at least three preferably five reinforcing bars or probing ropes are provided in the concrete protective wall, preferably in the upper stage.
  • the restraint system further comprises an intermediate layer or an intermediate strip which is arranged between the footing foundation and the roadway or the side strip of the roadway.
  • This may be an uncompressed intermediate strip, which in particular is not sealed. In this respect, rainwater can seep into this area.
  • the invention thus has the further advantage that no costly and expensive drainage measures are required.
  • a base layer without binder does not act as a water barrier, so that, regardless of whether an intermediate strip is provided or not, the drainage of the water is ensured.
  • the support layer according to the invention is preferably a compacted gravel and / or gravel layer.
  • a recycling layer is preferably a layer that meets the technical delivery conditions for rocks in road construction. Corresponding definitions are given in particular in " Technishce Delivery conditions for aggregates in road construction, TL Gestein-FtB 04, the Road and Transportation Research Association for Road Construction, published by FGSV-Verlag, 2004 edition defined in particular in chapter 1.3.2. Furthermore, corresponding definitions for recycling layers of DIN EM 13242 "aggregates for unbound and hydraulically bound mixtures for engineering and road construction" can be taken. Such layers are in particular compacted with at least 95% Proctor, in particular at least 97% Proctor.
  • the width of the individual steps is continuously reduced from bottom to top, so that in particular smooth outer surfaces are formed. It is particularly preferred that the concrete protective wall has the same contour on both sides and thus is in particular symmetrical to a median plane.
  • the preferably three, in particular five rebars preferably have a distance of about 100 mm to each other. It is particularly preferable to arrange all reinforcing bars in a vertical plane, ie one above the other. Preferably, the reinforcing bars are arranged along a vertical center line, or in a vertical center plane. In this case, the upper reinforcing rod preferably has a distance to the top of the concrete protective wall of about 150 mm.
  • the reinforcing bars or reinforcing cables are in a preferred embodiment above the arranged upper level and extend in the longitudinal direction of the concrete protective wall.
  • the lower stage only has a height of about 150 mm. Possibly.
  • the step may also have less than 150 mm, in particular less than 120 mm.
  • This invention is independent of whether it is a clamped or unclamped concrete protective wall. It is particularly preferred to combine this invention with the invention described above.
  • This invention is based on the problem that concrete protection walls, in particular concrete protection walls with high containment levels cause a very abrupt, little damped deceleration of the vehicle.
  • the concrete protection walls should not be displaceable depending on the retention level up to clearly defined forces, in order to be able to provide them, for example, between motorway lanes, dangerous embankments, etc. It is therefore the object to improve the damping of the motor vehicle, in particular to prevent injury to the occupants or to reduce the severity of injuries.
  • this can be achieved by a lower lower step of the stepped concrete protective wall.
  • the lower level of the concrete protection wall has a height which is lower than the height of a car axle.
  • the above dimensions may vary by ⁇ 20 mm, preferably only ⁇ 10 mm.
  • the inclination may preferably vary by ⁇ 1 gon.
  • the diameter of the reinforcing bars or the reinforcing ropes is preferably 10 - 16 mm.
  • a steel bar Bst 500 S is used.
  • a concrete protective wall has a lower step 10, a middle step 12 and an upper step 14.
  • the upper stage 14 three reinforcing bars 16 are provided, which are aligned horizontally.
  • the reinforcing bars 16 are arranged parallel to each other in a vertical center plane 18.
  • An upper side 20 of the concrete protection wall has a width of 180 mm. Due to the selected angle and the remaining dimensions of the concrete protective wall results in a width of a support side 22 of 542 mm.
  • FIG. 2 illustrated preferred embodiment of the invention is a restraint system that meets the requirements of the H2 Stability after the Euronorm 1317-2. Corresponding experiments have already been carried out.
  • the essential difference of this embodiment with respect to Fig. 1 described embodiment is that in the upper stage 14 not three but five reinforcing bars 16 are provided in the longitudinal direction of the concrete protective wall.
  • the reinforcing bars have a diameter of 16 mm and consist of steel BSt 500S.
  • the base layer 24 is frost-resistant and consists of gravel and / or gravel and / or suitable recycled material.
  • the base course was compacted with at least 97% Proctor.

Abstract

The system has an oblique concrete protective wall with two stages (12,14), where a center width of upper stage is less than a center width of the lower stage. A reinforcement structure is arranged in the wall and an uprising unit (24) is provided for positioning the wall. The uprising unit is formed at a distance from the roadway and is provided as a free carrier layer, where the carrier layer does not exhibit bonding agent solidification. An independent claim is also included for an oblique concrete protective wall comprising a reinforcing bar.

Description

Die Erfindung betrifft ein Rückhaltesystem für Kraftfahrzeuge, das an einer Fahrbahnbegrenzung vorgesehen ist.The invention relates to a restraint system for motor vehicles, which is provided at a roadway boundary.

Neben Rückhaltesystemen aus Metall sind Betonschutzwände zur Fahrbahnbegrenzung bekannt. Abgestufte Betonschutzwände unterliegen der DIN EN 1317-2 vom April 1998. In der DIN sind unterschiedliche Anforderungen, insbesondere hinsichtlich des Zurückhaltens von LKWs, definiert. Beispielsweise bei einer Anforderung nach H2 gemäß der vorstehenden Norm müssen LKWs bis zu einem Gesamtgewicht von 15 t zurückgehalten werden.In addition to restraint systems made of metal concrete protection walls are known for road boundary. Graded concrete protection walls are subject to DIN EN 1317-2 of April 1998. DIN defines different requirements, in particular with regard to the retention of lorries. For example, in the case of a requirement for H2 according to the above standard, trucks up to a total weight of 15 tons must be withheld.

Eine die Anforderung H2 erfüllende Betonschutzwand ist in " Straßenverkehrstechnik" 3/99, S. 120 - 123 beschrieben. Das Profil dieser Betonschutzwand weist eine untere Stufe mit einer Höhe von ca. 250 mm und einer Abweichung von der Senkrechten von ca. 9°, eine mittlere Stufe mit einer Höhe von ca. 50 mm und einer Abweichung von der Senkrechten von ca. 50° und eine obere Stufe mit einer Höhe von 600 mm und einer Abweichung von der Senkrechten von ca. 9° auf. Die Breite der Oberseite dieser Betonschutzwand beträgt ca. 200 mm. Die Gesamthöhe dieser Betonschutzwand beträgt somit ca. 900 mm.A concrete protection wall meeting the requirement H2 is in " Road Traffic Engineering "3/99, pp. 120-123 described. The profile of this concrete protective wall has a lower step with a height of approx. 250 mm and a deviation from the vertical of approx. 9 °, a middle step with a height of approx. 50 mm and a deviation from the vertical of approx. 50 ° and an upper step with a height of 600 mm and a deviation from the vertical of about 9 °. The width of the top of this concrete protection wall is about 200 mm. The total height of this concrete protection wall is thus approx. 900 mm.

Um die Aufhaltestufe H2 nach der Euronorm 1317-2 zu erreichen und ein Verschieben von Betonschutzwänden zu vermeiden, werden diese in die Fahrbahn eingespannt. Die untere Stufe der Betonschutzwand ragt somit in den Fahrbahnbelag hinein, bzw. ist in diesen eingebunden. Das Einspannen von Betonschutzwänden hat jedoch den Nachteil, dass auf beiden Seiten der Betonschutzwand die Fahrbahn ausgebildet sein muss. Dies ist an Fahrbahnrändern sehr aufwändig und erhöht die Kosten.In order to reach the containment stage H2 according to the Euronorm 1317-2 and to avoid a shifting of concrete protection walls, these are clamped in the roadway. The lower level of the concrete protection wall thus protrudes into the road surface, or is integrated in this. However, the clamping of concrete protective walls has the disadvantage that on both sides of the concrete protective wall, the roadway must be formed. This is very complicated at the edges of the road and increases the costs.

Ferner ist es aus EP 1 102 898 bekannt, Betonschutzwände nicht in die Fahrbahn einzuspannen sondern auf der Fahrbahn selbst aufzustellen. Hierzu ist es erforderlich, die Fahrbahn entsprechend zu verbreitern. Da es hierzu nicht nur erforderlich ist, den fahrbaren Belag sondern auch den Unterbau des Fahrbahnbelags, sowie das entsprechende Fahrbahnfundament zu verbreitern, ist dies aufwendig und kostenintensiv. Ferner ist es aus EP 1 102 898 bekannt, ein an die Fahrbahn angrenzendes Betonfundament vorzusehen. Wenngleich das Vorsehen eines derartigen Betonfundaments kostengünstiger ist als das Verbreitern einer Fahrbahn, ist es dennoch aufwendig ein entsprechendes Betonfundament, das ferner frostsicher sein muss, zu gießen. Ferner kann das Vorsehen eines Betonfundaments zu Problemen bei der Wasserabfuhr führen, da es sich bei einem Betonfundament um eine Wassersperre handelt.Furthermore, it is off EP 1 102 898 known not to clamp concrete protection walls in the roadway but to set up on the road itself. For this purpose, it is necessary to widen the road accordingly. Since it is not only necessary for this purpose to widen the mobile covering but also the substructure of the road surface, as well as the corresponding roadway foundation, this is complicated and costly. Furthermore, it is off EP 1 102 898 known to provide a contiguous to the roadway concrete foundation. Although the provision of such a concrete foundation is cheaper than widening a road, it is still expensive to cast a corresponding concrete foundation, which must also be frost-proof. Furthermore, the provision of a concrete foundation can lead to problems in the removal of water, since a concrete foundation is a water barrier.

Aufgabe der Erfindung ist es, ein Rückhaltesystem für Kraftfahrzeuge zu schaffen, das eine Aufhaltestufe von mindestens H2 aufweist und einfach und kostengünstig herstellbar ist.The object of the invention is to provide a restraint system for motor vehicles, which has a containment level of at least H2 and is easy and inexpensive to produce.

Die Lösung der Aufgabe erfolgt erfindungsgemäß durch die Merkmale des Anspruchs 1.The object is achieved according to the invention by the features of claim 1.

Das erfindungsgemäße Rückhaltesystem für Kraftfahrzeuge weist eine abgestufte Betonschutzwand auf. Die Betonschutzwand weist mindestens zwei, vorzugsweise drei Stufen auf. Die obere Stufe weist hierbei eine geringere mittlere Breite als die untere Stufe auf. Sofern die Betonschutzwand mehr als zwei Stufen aufweist, nimmt die mittlere Breite der Stufen von unten nach oben ab. Vorzugsweise sind zumindest bei einem Teil der Stufen, die Außenwände gegenüber einer Vertikalen geneigt, wobei die Neigung der der Fahrbahn zugewandten Seite von unten nach oben gesehen, von der Fahrbahn wegweist.The restraint system for motor vehicles according to the invention has a stepped concrete protective wall. The concrete protection wall has at least two, preferably three stages. The upper stage here has a smaller average width than the lower stage. If the concrete protection wall has more than two stages, the average width of the steps decreases from bottom to top. Preferably, at least in a part of the steps, the outer walls are inclined with respect to a vertical, wherein the inclination of the side facing the road facing away from the bottom, pointing away from the roadway.

Bisher wurde davon ausgegangen, dass es zur Erzielung einer Aufhaltestufe von H2 erzwingend erforderlich ist, die Betonschutzwand in die Fahrbahn einzuspannen. Untersuchungen haben jedoch ergeben, dass überraschenderweise die erfindungsgemäße Betonschutzwand nicht in die Fahrbahn eingespannt werden muss, wobei ein wesentlicher Aspekt um dies zu erzielen das Vorsehen von mehreren Bewehrungselementen, insbesondere Bewehrungsstäben ist. Das erfindungsgemäße Rückhaltesystem weist somit ein fahrbahnunabhängiges, verdichtetes, als ungebundene Tragschicht ausgebildetes Aufstandelement auf, auf das die Betonschutzwand aufgestellt ist.So far, it was assumed that to achieve a containment level of H2 is urgently necessary to clamp the concrete protection wall in the roadway. Investigations have shown, however, that, surprisingly, the concrete protective wall according to the invention does not have to be clamped in the roadway, an essential aspect in order to achieve this is the provision of a plurality of reinforcing elements, in particular reinforcing bars. The restraint system according to the invention thus has a roadway-independent, compacted, formed as an unbound support layer uprising element on which the concrete protective wall is placed.

Überraschenderweise können mit dem erfindungsgemäßen Rückhaltesystem gute Aufhalteeigenschaften erzielt werden. Dies ist insbesondere überraschend, da beim Vorsehen einer ungebundenen Tragschicht die Betonschutzwand bei einem Aufprall wegkippt und somit davon auszugehen wäre, dass nur schlechte Aufhalteeigenschaften erzielbar sind. Dies ist jedoch nicht der Fall. Überraschenderweise ist es insbesondere bei einer Betonschutzwand mit mindestens fünf Bewehrungsstäben oder Bewehrungsseilen möglich, die Aufhaltestufe H2 zu erzielen.Surprisingly, good retention properties can be achieved with the retention system according to the invention. This is particularly surprising, since the provision of an unbound support layer tilts the concrete protection wall in the event of an impact and thus would assume that only poor retention properties can be achieved. This is not the case. Surprisingly, it is possible, in particular in the case of a concrete protective wall with at least five reinforcing bars or reinforcing ropes, to achieve the containment stage H2.

Erfindungsgemäße Rückhaltesysteme haben insbesondere den Vorteil, dass sie erheblich kostengünstiger herstellbar sind, da ungebundene Tragschichten, beispielsweise lediglich durch Verfestigung geeigneter Materialien wie Schotter, Kies und/oder Recyclingstoffen, hergestellt werden können. Das Gießen eines Betonfundaments oder das Verbreitern der Fahrbahn, um eine feste gebundene Aufstandsfläche herzustellen, ist erfindungsgemäß nicht erforderlich.Restraint systems according to the invention have the particular advantage that they can be produced considerably less expensively, since unbound support layers, for example, can only be produced by solidifying suitable materials such as gravel, gravel and / or recycling materials. The casting of a concrete foundation or the widening of the road to produce a fixed bonded footprint is not required according to the invention.

Die insbesondere vorgefertigten Betonschutzwände können somit auf einfache Weise auf das Aufstandelement aufgestellt werden. Ein Einspannen in die Fahrbahn oder ein Verankern im Boden ist nicht erforderlich. Die Montage derartiger Betonschutzwände ist daher erheblich kostengünstiger.The particular prefabricated concrete protection walls can thus be placed on the uprising element in a simple manner. Clamping in the road or anchoring in the ground is not required. The installation of such concrete protection walls is therefore considerably cheaper.

Das erfindungsgemäße Rückhaltesystem für Kraftfahrzeuge, das an Fahrbahnbegrenzungen vorgesehen ist, weist in besonders bevorzugter Ausführungsform eine abgestufte Betonschutzwand auf, deren erste Stufe eine Höhe von 150 - 250 mm und vorzugsweise eine Abweichung von der Senkrechten von 8 - 10° aufweist. Eine mittlere Stufe weist eine Höhe 40 - 60 mm, vorzugsweise von ca. 50 mm und vorzugsweise eine Abweichung von der Senkrechten von ca. 50° auf. Eine obere Stufe weist eine Höhe von 600 - 700 mm und vorzugsweise eine Abweichung von der Senkrechten von 8 - 10° auf. Ferner sind in der Betonschutzwand, vorzugsweise in der oberen Stufe mindestens drei vorzugsweise fünf Bewehrungsstäbe oder Bewährungsseile vorgesehen.The restraint system for motor vehicles according to the invention, which is provided on road boundaries, in a particularly preferred embodiment, a stepped concrete protection wall whose first stage has a height of 150 - 250 mm and preferably a deviation from the vertical of 8 - 10 °. A middle step has a height of 40-60 mm, preferably of about 50 mm and preferably a deviation from the vertical of about 50 °. An upper step has a height of 600-700 mm and preferably a deviation from the vertical of 8-10 °. Furthermore, at least three preferably five reinforcing bars or probing ropes are provided in the concrete protective wall, preferably in the upper stage.

Besonders bevorzugt ist es, dass das Rückhaltesystem ferner eine Zwischenschicht bzw. ein Zwischenstreifen aufweist, die bzw. der zwischen dem Aufstandfundament und der Fahrbahn bzw. dem Seitenstreifen der Fahrbahn angeordnet ist. Es kann sich hierbei um einen unverdichteten Zwischenstreifen handeln, der insbesondere nicht versiegelt ist. Insofern kann Regenwasser in diesem Bereich versickern. Die Erfindung hat somit ferner den Vorteil, dass keine aufwändigen und teuren Entwässerungsmaßnahmen erforderlich sind. Insbesondere ist es erfindungsgemäß möglich, die ungebundene Tragschicht als Frostschutzschicht auszugestalten, so dass eine einwandfreie Entwässerung möglich ist. Eine Tragschicht ohne Bindemittel wirkt nicht als Wasserbarriere, so dass, unabhängig davon ob ein Zwischenstreifen vorgesehen ist oder nicht, das Abfliessen des Wassers gewährleistet ist.It is particularly preferred that the restraint system further comprises an intermediate layer or an intermediate strip which is arranged between the footing foundation and the roadway or the side strip of the roadway. This may be an uncompressed intermediate strip, which in particular is not sealed. In this respect, rainwater can seep into this area. The invention thus has the further advantage that no costly and expensive drainage measures are required. In particular, it is possible according to the invention to design the unbound base layer as antifreeze layer, so that proper drainage is possible. A base layer without binder does not act as a water barrier, so that, regardless of whether an intermediate strip is provided or not, the drainage of the water is ensured.

Bei der erfindungsgemäßen Tragschicht handelt es sich vorzugsweise um eine verdichtete Kies- und/ oder Schotterschicht. Anstelle oder in Kombination derartiger Schichten kann eine Recycling-Schicht. Bei einer Recycling-Schicht handelt es sich vorzugsweise um eine Schicht, die den technischen Lieferbedingungen für Gestein im Straßenbau entspricht. Entsprechende Definitionen sind insbesondere in " Technishce Lieferbedingungen für Gesteinskörnungen im Straßenbau, TL Gestein-FtB 04, der Forschungsgesellschaft für Straßen- und Verkehrswesen im Straßenbau, erschienen im FGSV-Verlag, Ausgabe 2004 definiert, wobei die Definition insbesondere in Kapitel 1.3.2 gegeben ist. Des weiteren können entsprechende Definitionen für Recycling-Schichten der DIN EM 13242 "Gesteinskörnungen für ungebundene und hydraulisch gebundene Gemische für Ingenieur- und Straßenbau" entnommen werden. Derartige Schichten sind insbesondere mit mindestens 95 % Proctor, insbesondere mindestens 97% Proctor verdichtet.The support layer according to the invention is preferably a compacted gravel and / or gravel layer. Instead of or in combination of such layers, a recycling layer. A recycling layer is preferably a layer that meets the technical delivery conditions for rocks in road construction. Corresponding definitions are given in particular in " Technishce Delivery conditions for aggregates in road construction, TL Gestein-FtB 04, the Road and Transportation Research Association for Road Construction, published by FGSV-Verlag, 2004 edition defined in particular in chapter 1.3.2. Furthermore, corresponding definitions for recycling layers of DIN EM 13242 "aggregates for unbound and hydraulically bound mixtures for engineering and road construction" can be taken. Such layers are in particular compacted with at least 95% Proctor, in particular at least 97% Proctor.

Bei einer bevorzugten Ausführungsform der erfindungsgemäßen Betonschutzwand verringert sich die Breite der einzelnen Stufen von unten nach oben kontinuierlich, so dass insbesondere glatte Außenflächen entstehen. Besonders bevorzugt ist es, dass die Betonschutzwand auf beiden Seiten die selbe Kontur aufweist und somit insbesondere symmetrisch zu einer Mittelebene ist.In a preferred embodiment of the concrete protective wall according to the invention, the width of the individual steps is continuously reduced from bottom to top, so that in particular smooth outer surfaces are formed. It is particularly preferred that the concrete protective wall has the same contour on both sides and thus is in particular symmetrical to a median plane.

Die vorzugsweise drei, insbesondere fünf Bewehrungsstäbe haben vorzugsweise zueinander einen Abstand von ca. 100 mm. Besonders bevorzugt ist es, alle Bewehrungsstäbe in einer vertikalen Ebene, d. h. übereinander anzuordnen. Vorzugsweise sind die Bewehrungsstäbe entlang einer vertikalen Mittellinie, bzw. in einer vertikalen Mittelebene angeordnet. Hierbei weist der obere Bewehrungsstab vorzugsweise einen Abstand zur Oberseite der Betonschutzwand von ca. 150 mm auf. Die Bewehrungsstäbe oder Bewehrungsseile sind in bevorzugter Ausführungsform oberhalb der oberen Stufe angeordnet und verlaufen in Längsrichtung der Betonschutzwand.The preferably three, in particular five rebars preferably have a distance of about 100 mm to each other. It is particularly preferable to arrange all reinforcing bars in a vertical plane, ie one above the other. Preferably, the reinforcing bars are arranged along a vertical center line, or in a vertical center plane. In this case, the upper reinforcing rod preferably has a distance to the top of the concrete protective wall of about 150 mm. The reinforcing bars or reinforcing cables are in a preferred embodiment above the arranged upper level and extend in the longitudinal direction of the concrete protective wall.

Bei einer besonders bevorzugten Ausführungsform der erfindungsgemäßen Betonschutzwand, die eine selbständige Erfindung darstellt, weist die untere Stufe nur eine Höhe von ca. 150 mm auf. Ggf. kann die Stufe auch weniger als 150 mm, insbesondere weniger als 120 mm, aufweisen. Diese Erfindung ist unabhängig davon, ob es sich um eine eingespannte oder nicht eingespannte Betonschutzwand handelt. Besonders bevorzugt ist es diese Erfindung mit vorstehend beschriebener Erfindung zu kombinieren.In a particularly preferred embodiment of the concrete protective wall according to the invention, which represents an independent invention, the lower stage only has a height of about 150 mm. Possibly. The step may also have less than 150 mm, in particular less than 120 mm. This invention is independent of whether it is a clamped or unclamped concrete protective wall. It is particularly preferred to combine this invention with the invention described above.

Dieser Erfindung liegt das Problem zu Grunde, dass Betonschutzwände, insbesondere Betonschutzwände mit hohen Aufhaltestufen ein sehr abruptes, wenig gedämpftes Abbremsen des Fahrzeugs bewirken. Andererseits sollen die Betonschutzwände je nach Aufhaltestufe bis zu klar definierten Kräften nicht verschiebbar sein, um sie beispielsweise zwischen Autobahnfahrbahnen, gefährlichen Böschungen etc. vorsehen zu können. Es besteht somit die Aufgabe, die Dämpfung des Kraftfahrzeugs zu verbessern, um insbesondere Verletzungen der Insassen zu vermeiden oder die Schwere der Verletzungen zu verringern. Erfindungsgemäß kann dies durch eine niedrigere untere Stufe der abgestuften Betonschutzwand erzielt werden. Hierbei weist die untere Stufe der Betonschutzwand eine Höhe auf, die niedriger ist als die Höhe einer Pkw-Achse. Dies hat zur Folge, dass eine Verformung der Pkw-Räder erfolgen kann und der Aufprall nicht unmittelbar und in voller Wucht über die Achse in das Kraftfahrzeug geleitet wird. Die Verformung der Räder bewirkt eine Dämpfung, so dass der Aufprall entsprechend abgemildert ist. Dies ist insbesondere bei nicht eingespannten und insbesondere bei auf ungebundenen Tragschichten aufgestellten Betonschutzwänden vorteilhaft, da ein Teil der Aufprallenergie in Verformungsenergie umgewandelt wird.This invention is based on the problem that concrete protection walls, in particular concrete protection walls with high containment levels cause a very abrupt, little damped deceleration of the vehicle. On the other hand, the concrete protection walls should not be displaceable depending on the retention level up to clearly defined forces, in order to be able to provide them, for example, between motorway lanes, dangerous embankments, etc. It is therefore the object to improve the damping of the motor vehicle, in particular to prevent injury to the occupants or to reduce the severity of injuries. According to the invention this can be achieved by a lower lower step of the stepped concrete protective wall. Here, the lower level of the concrete protection wall has a height which is lower than the height of a car axle. This has the consequence that a deformation of the car wheels can take place and the impact is not passed directly and in full force over the axis in the motor vehicle. The deformation of the wheels causes a damping, so that the impact is mitigated accordingly. This is particularly advantageous in non-clamped and especially erected on unbound support layers concrete protective walls, as part of the impact energy is converted into deformation energy.

Die vorstehend genannten Abmessungen können um ± 20 mm, vorzugsweise lediglich ± 10 mm variieren. Die Neigung kann vorzugsweise um ± 1 gon variieren.The above dimensions may vary by ± 20 mm, preferably only ± 10 mm. The inclination may preferably vary by ± 1 gon.

Der Durchmesser der Bewehrungsstäbe bzw. der Bewehrungsseile beträgt vorzugsweise 10 - 16 mm. Vorzugsweise wird ein Stabstahl Bst 500 S eingesetzt.The diameter of the reinforcing bars or the reinforcing ropes is preferably 10 - 16 mm. Preferably, a steel bar Bst 500 S is used.

Nachfolgend wird die Erfindung an Hand bevorzugter Ausführungsformen unter Bezugnahme auf die anliegenden Zeichnungen näher erläutert.The invention will be explained in more detail with reference to preferred embodiments with reference to the accompanying drawings.

Es zeigen:

Figur 1:
einen Querschnitt einer ersten bevorzugten Ausführungsform des erfindungsgemäßen Rückhaltesystems und
Figur 2:
einen Querschnitt einer zweiten bevorzugten Ausführungsform des erfindungsgemäßen Rückhaltesystems.
Show it:
FIG. 1:
a cross section of a first preferred embodiment of the restraint system according to the invention and
FIG. 2:
a cross section of a second preferred embodiment of the restraint system according to the invention.

Eine Betonschutzwand weist eine untere Stufe 10, eine mittlere Stufe 12 und eine obere Stufe 14 auf. In der oberen Stufe 14 sind drei Bewehrungsstäbe 16 vorgesehen, die horizontal ausgerichtet sind. Die Bewehrungsstäbe 16 sind zueinander parallel in einer vertikalen Mittelebene 18 angeordnet. Eine Oberseite 20 der Betonschutzwand weist eine Breite von 180 mm auf. Auf Grund der gewählten Winkel und der übrigen Abmessungen der Betonschutzwand ergibt sich eine Breite einer Auflageseite 22 von 542 mm.A concrete protective wall has a lower step 10, a middle step 12 and an upper step 14. In the upper stage 14 three reinforcing bars 16 are provided, which are aligned horizontally. The reinforcing bars 16 are arranged parallel to each other in a vertical center plane 18. An upper side 20 of the concrete protection wall has a width of 180 mm. Due to the selected angle and the remaining dimensions of the concrete protective wall results in a width of a support side 22 of 542 mm.

Bevorzugte Abmessungen können Fig. 1 entnommen werden.Preferred dimensions can Fig. 1 be removed.

Bei dem erfindungsgemäßen Rückhaltesystem für Kraftfahrzeuge ist im dargestellten Ausführungsbeispiel die vorstehend beschriebene Betonschutzwand auf ein Aufstandelement 24, das beispielsweise aus Kies und/ oder Schotter besteht, aufgestellt. Eine feste Verbindung zwischen der Betonschutzwand und dem Aufstandelement 24, bei dem es sich um eine fahrbahnunabhängige ungebundene Tragschicht handelt, ist nicht erforderlich. Dies hat insbesondere den Vorteil, dass zwischen einer Fahrbahn 26 und dem Aufstandelement 24 eine Zwischenschicht 28 aus unverfestigtem Material oder nur geringfügig verfestigtem Material vorgesehen sein kann. In der Zwischenschicht 28 kann insbesondere Regenwasser versickern. Da die Betonschutzwand nicht eingespannt ist, muss nur eine erheblich schmalere Fahrbahndecke vorgesehen werden, wodurch die Kosten erheblich reduziert werden können.In the restraint system for motor vehicles according to the invention in the illustrated embodiment, the above-described concrete protection wall on an uprising element 24, which consists for example of gravel and / or gravel, set up. A fixed connection between the concrete protection wall and the uprising element 24, which is a road-independent unbound support layer, is not required. This has the particular advantage that an intermediate layer 28 of unconsolidated material or only slightly consolidated material can be provided between a roadway 26 and the uprising element 24. Rainwater can seep into the intermediate layer 28 in particular. Since the concrete protective wall is not clamped, only a considerably narrower road surface must be provided, whereby the cost can be significantly reduced.

Bei einer zweiten bevorzugten Ausführungsform (Fig. 2) des erfindungsgemäßen Rückhaltesystems für Kraftfahrzeuge sind die selben und ähnlichen Bestandteile mit den selben Bezugszeichen gekennzeichnet.In a second preferred embodiment ( Fig. 2 ) of the restraint system for motor vehicles according to the invention, the same and similar components are identified by the same reference numerals.

Bei der in Fig. 2 dargestellten bevorzugten Ausführungsform der Erfindung handelt es sich um ein Rückhaltesystem, das die Anforderungen der Aufhaltsstufe nach H2 nach der Euronorm 1317 - 2 erfüllt. Entsprechende Versuche wurden bereits durchgeführt.At the in Fig. 2 illustrated preferred embodiment of the invention is a restraint system that meets the requirements of the H2 Stability after the Euronorm 1317-2. Corresponding experiments have already been carried out.

Der wesentliche Unterschied dieser Ausführungsform zu der anhand Fig. 1 beschriebenen Ausführungsform besteht darin, dass in der oberen Stufe 14 nicht drei sondern fünf Bewehrungsstäbe 16 in Längsrichtung der Betonschutzwand vorgesehen sind. Die Bewehrungsstäbe weisen einen Durchmesser von 16 mm auf und bestehen aus dem Stahl BSt 500S.The essential difference of this embodiment with respect to Fig. 1 described embodiment is that in the upper stage 14 not three but five reinforcing bars 16 are provided in the longitudinal direction of the concrete protective wall. The reinforcing bars have a diameter of 16 mm and consist of steel BSt 500S.

Die Tragschicht 24 ist frostsicher gegründet und besteht aus Kies und/oder Schotter und/oder geeignetem Recyclingmaterial. Die Tragschicht wurde mit mindestens 97% Proctor verdichtet.The base layer 24 is frost-resistant and consists of gravel and / or gravel and / or suitable recycled material. The base course was compacted with at least 97% Proctor.

Claims (11)

  1. A restraint system for motor vehicles, comprising
    a stepped protective concrete wall with at least two steps (10, 12, 14), where an upper step (14) has a lesser mean width than a lower step (10),
    at least five reinforcing elements (16) provided in the protective concrete wall, and
    a foot element (24) for the protective concrete wall, said foot element being independent of the road surface and takes the form of an unbound supporting layer (24),
    and wherein the protective concrete wall is placed on the foot element (24),
    characterized in that
    the restraint system corresponds at least to the containment level H2,
    and the protective concrete wall is not mounted in the foot element, in the road surface or the ground.
  2. The restraint system of claim 1, characterized in that the support layer (24) shows no binder solidification.
  3. The restraint system of claim 1 or 2, characterized in that the support layer (24) comprises a layer of gravel and/or crushed stone, the support layer in particular being formed by a layer of gravel and/or crushed stone.
  4. The restraint system of one of claims 1-3, characterized in that the support layer (24) comprises a layer of recycled material, the support layer in particular being formed by a layer of recycled material.
  5. The restraint system of one of claims 1-4, characterized in that the support layer (24) has a compaction of at least 95% Proctor, especially at least 97% Proctor.
  6. The restraint system of one of claims 1-5, characterized by a non-compacted intermediate strip (28) between the foot element (24) and the road surface (26).
  7. The restraint system of one of claims 1-6, characterized in that the bottom step (10) is offset from the perpendicular by 8-10°, and/or the middle step (12) is offset from the perpendicular by about 45-55°, and/or the upper step (14) is offset from the perpendicular by 8-10°.
  8. The restraint system of one of claims 1-7, characterized in that the reinforcing elements (16), which preferably are reinforcing rods, extend in the longitudinal direction of the protective concrete wall and are preferably provided in the top step (10).
  9. The restraint element of claim 8, characterized in that the diameter of the preferably round reinforcing rods (16) is 1β-16 mm and/or the reinforcing rods (16) are spaced from each other by about 100 mm, the tolerance preferably being ±30 mm.
  10. The restraint system of one of claims 1-9, characterized in that all reinforcing rods (16) are arranged in a vertical plane (18).
  11. The restraint system of one of claims 1-10, characterized in that the topmost reinforcing rod (16) is spaced from the upper surface (20) of the protective concrete wall by about 150 mm, the tolerance preferably being ±30 mm, and/or the protective concrete wall has a width of about 180 mm at the upper surface and a width of about 540 mm at the bottom surface.
EP06114995A 2005-06-30 2006-06-06 Restraint system Active EP1739235B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200630300T SI1739235T1 (en) 2005-06-30 2006-06-06 Restraint system
PL06114995T PL1739235T3 (en) 2005-06-30 2006-06-06 Restraint system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005030412A DE102005030412A1 (en) 2005-06-30 2005-06-30 Restraint system

Publications (3)

Publication Number Publication Date
EP1739235A2 EP1739235A2 (en) 2007-01-03
EP1739235A3 EP1739235A3 (en) 2007-02-28
EP1739235B1 true EP1739235B1 (en) 2009-03-04

Family

ID=37102161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06114995A Active EP1739235B1 (en) 2005-06-30 2006-06-06 Restraint system

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EP (1) EP1739235B1 (en)
AT (1) ATE424483T1 (en)
DE (2) DE102005030412A1 (en)
DK (1) DK1739235T3 (en)
PL (1) PL1739235T3 (en)
SI (1) SI1739235T1 (en)

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EP2339071B1 (en) 2009-12-22 2015-04-15 Strabag Ag Bridging element and roadway barrier element
DE202009017487U1 (en) 2009-12-22 2010-03-11 Tss Technische Sicherheits-Systeme Gmbh Bridging element and road boundary element
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Also Published As

Publication number Publication date
PL1739235T3 (en) 2009-08-31
DE102005030412A1 (en) 2007-01-04
ATE424483T1 (en) 2009-03-15
EP1739235A3 (en) 2007-02-28
SI1739235T1 (en) 2009-08-31
DK1739235T3 (en) 2009-06-08
EP1739235A2 (en) 2007-01-03
DE502006002989D1 (en) 2009-04-16

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