EP0343091B1 - Verfahren und Vorrichtungen zum Zurückhalten von Fahrzeugen auf einer Strasse - Google Patents

Verfahren und Vorrichtungen zum Zurückhalten von Fahrzeugen auf einer Strasse Download PDF

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Publication number
EP0343091B1
EP0343091B1 EP89430011A EP89430011A EP0343091B1 EP 0343091 B1 EP0343091 B1 EP 0343091B1 EP 89430011 A EP89430011 A EP 89430011A EP 89430011 A EP89430011 A EP 89430011A EP 0343091 B1 EP0343091 B1 EP 0343091B1
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EP
European Patent Office
Prior art keywords
road
sliding coating
sliding
coating
safety
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.)
Expired - Lifetime
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EP89430011A
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English (en)
French (fr)
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EP0343091A1 (de
Inventor
Claude Pomero
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Individual
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Individual
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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
    • E01F15/0492—Provisions for guiding in combination with rails, e.g. tyre-gutters
    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E01F15/025—Combinations of at least two of the barrier member types covered by E01F15/04 - E01F15/08, e.g. rolled steel section or plastic strip backed up by cable, safety kerb topped by rail barrier
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E01F15/04—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
    • 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
    • E01F15/0453—Rails of materials other than metal or concrete, e.g. wood, plastics; Rails of different materials, e.g. rubber-faced metal profiles, concrete-filled steel tubes
    • 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
    • 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
    • E01F15/085—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 metal
    • 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
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/535—Kerbs or road edgings specially adapted for alerting road users
    • 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
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/658—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing
    • E01F9/669—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing for fastening to safety barriers or the like

Definitions

  • the subject of the present invention is a method for retaining vehicles on a road and safety devices installed along roads or motorways either on the lateral part or between the two carriageways of a motorway or on the carriageway itself for signaling and protect a site.
  • a first category is that of slides or deformable safety rails in the event of impact, which generally consist of metal profiles.
  • a second category is that of safety barriers made up of reinforced concrete or prestressed concrete walls which do not undergo any deformation or displacement during the impact of a vehicle.
  • a third category is that of traditional curbs which are used as wheel guards.
  • Safety barriers try to brake a sinking vehicle by absorbing its kinetic energy by deformation of the slide, but this effect is ineffective as soon as the mass and / or speed of the vehicle are high. Safety barriers are dangerous for motorcyclists hitting them.
  • Safety barriers are very effective in preventing a vehicle from accidentally leaving the road. On the other hand, they are very aggressive for the vehicle since the kinetic energy of the vehicle is absorbed by the crushing of the body. Concrete safety barriers are expensive and installation work is long. In addition, it can happen that a vehicle hitting a safety barrier turns over because the front wheels climb over the wall due to the high coefficient of friction of tires on concrete. Concrete curbs are often climbed by vehicles in distress for the same reason.
  • Patent US-A-3658300 (Templeton) describes safety devices for motorways which are composed of steel profiles which have one or two concave lateral flanks, the lower edge of which is extended by a substantially horizontal deck placed on the ground.
  • the aprons have anchors which are plugged into the ground on their rear face.
  • US-A-2279942 (Hausherr) describes safety devices for motorways, the material of which is not specified. These devices have a concave side towards the road and a vertical wall at the rear. This flank and this wall delimit a space in which is housed a longitudinal reservoir which contains an oil. Wicks passing through holes in the concave flank soak in the oil and continuously pour drops of oil onto the concave flank.
  • Patent CH-A-429806 (Bucher) describes road safety devices which comprise a slide or a rail made of concrete, steel or a light metal which is connected to the supports by a damping device constituted for example by a spring or by concentric tubes easily deformable or by stirrups filled with a cellular body.
  • the rails can be combined with wheel guard edges with a concave surface.
  • the objective of the present invention is to provide means which facilitate the sliding of damaged vehicles against slides or rails or safety barriers or curbs placed along roads and motorways which means are easier and less expensive to implement as lubricating liquids and are permanent.
  • the means according to the invention include laying along a road, safety devices such as barriers, curbs, rails, wooden log rails or low walls forming a continuous surface substantially parallel to the axis off the road to prevent vehicles from accidentally getting off the road.
  • safety devices such as barriers, curbs, rails, wooden log rails or low walls forming a continuous surface substantially parallel to the axis off the road to prevent vehicles from accidentally getting off the road.
  • the object of the invention is achieved by a process in which at least part of the continuous surface exposed to vehicle impact is covered by a strip of slippery, solid or pasty coating, having a coefficient of static friction with the lower rubber. to 0.4 such that a vehicle which accidentally collides with said continuous surface slides along said strip.
  • a device comprises a strip of continuous sliding coating parallel to the road, which sliding coating is composed of a solid or pasty material having a coefficient of static friction with the rubber of less than 0.4.
  • the sliding coating is composed of polytetrafluoroethylene or of a solid silicone resin.
  • the sliding coating consists of a layer of graphite particles applied by friction against said surface exposed to impact.
  • the sliding coating is a layer of wax or paraffin composed of a solid alkane having a number of carbon atoms greater than 15.
  • the sliding coating is a paint or a grease containing particles of graphite or molybdenum sulfide.
  • the sliding coating comprises microbeads having a diameter of less than 3 mm which are fixed by a solid binder, for example by an adhesive film.
  • the invention results in new road safety devices.
  • the vehicle sliding along the sliding surface is guided by it and it can be replaced parallel to the road which prevents it from passing in the opposite lane of a highway or that it is returned towards the lane in which it was traveling, hence a reduced risk of violent impact with other vehicles.
  • a motorcyclist who accidentally hits a safety device according to the invention slides against the slippery surface and the severity of the injuries is less.
  • the solid or pasty sliding coatings according to the invention have the advantage of being easier to to implement, to be much less expensive to operate and to be also more aesthetic and more discreet. It is the same with respect to the known device comprising an endless belt mounted on rollers or on balls.
  • Figures 1 and 2 show an element 1 of a safety edge which is constituted by identical elements which are simply placed end to end along a road to prevent road vehicles from leaving the road.
  • This element is a profile, for example a metal profile obtained by rolling, by centering or by bending a metal sheet.
  • flank 1i which is directed towards the road and an external flank 1e which is on the side opposite the road.
  • the internal flank 1i is extended downwards by a sole 3 slightly down towards the road.
  • the internal edge 5 of the sole 3 is folded at a right angle and bears on the ground.
  • the sole 3 is connected to the internal flank 1i by a curved surface 2 whose concavity is directed towards the road.
  • the width in the transverse direction of the sole 3 varies according to the applications.
  • the sole 3 has a transverse width of the order of 20 cm so that the wheels of a running vehicle which leaves the road by making an angle of 20 ° to 30 with the axis thereof. ° are supported on the sole 3 before striking the internal flank 1i which has the advantage of limiting the lateral displacement of the edge which is held in place by the weight of the vehicle.
  • the transverse width of the sole 3 is less than approximately 10 cm so that, in the event of a vehicle impact against the edge, the vehicle tire meets the internal sidewall 1i before pressing on the sole 3.
  • Figures 1 and 2 show a preferred embodiment in which the outer flank 1e has the shape of a circular sector centered on the inner edge 5 of the sole 3. This shape allows good alignment of the outer flank despite the irregularities in the floor on which the border is laid. It is sufficient at the time of installation to align the internal ends 5 of the various elements.
  • the lower edge of the external flank may have a surface 4a which is curved upwards to facilitate the sliding of the profile on the ground or else a surface perpendicular to the ground.
  • the internal flank 1i has at its upper part a curved surface 7 whose convexity is directed upwards and towards the road, which is tangentially connected to the cylindrical surface 4 of the rear flank and to the curved surface 2 of the front flank.
  • the convex curved surface 7 carries a sliding coating 8 which is located at a distance from the ground such that the tire of a vehicle which leaves the road strikes this coating 8.
  • the coating 8 is a sheet or a layer of polytetrafluoroethylene or of solid silicone resin or graphite or any other solid material having a coefficient of static friction with the rubber of less than 0.4.
  • the edges 1 slide on the ground by absorbing part of the kinetic energy of the vehicles.
  • the front wheels which are the steered wheels, straighten by sliding against the surface and, in most cases, the impact brings the vehicle back in the direction of the axis of the roadway.
  • metal crash barriers have a coefficient of static friction with rubber greater than 0.6.
  • edge elements 1 shown in Figures 1 and 2 advantageously include, at their two ends, a notch 6 which allows the passage of the bolts and tools required when fixing the elements together.
  • FIG. 3 shows a cross section of an alternative embodiment of a border according to the invention which is composed of a curved metal profile which has a substantially horizontal sole 3 which is placed on the ground, a curved surface 2 which connects the sole with an inclined and substantially planar internal flank 1i which is tangentially connected to a cylindrical surface 7 whose convexity is directed towards the road and which carries on its convex external face a sliding coating 8.
  • FIG. 4 represents a cross section of a road safety barrier composed of a low wall 9 forming a continuous line bordering a road.
  • the wall 9 can be a concrete wall poured on site or composed of prefabricated elements placed end to end.
  • the reference 9i designates the internal flank, that is to say the one facing the road.
  • a metal profile 10 is fixed for example by bolts or by expansion plugs or for any other equivalent fixing means.
  • the profile 10 has a convex surface facing the road and this convex surface has a sliding coating 11.
  • the profile 10 and the sliding covering 11 are symmetrical with respect to a horizontal plane PP ′ and the height of this plane above the ground can vary between 30 cm and 60 cm depending on whether one wishes to straighten the wheels of a vehicle after an impact against the barrier or only allow a good sliding of the vehicle body against the slippery surface.
  • FIG. 5 shows a cross section of another embodiment of a metal profile 12 according to the invention intended to be placed between two traffic lanes to separate them.
  • the profile 12 is preferably symmetrical relative to a longitudinal vertical plane V V ′.
  • the lower ends of the lateral flanks are extended by surfaces 16a and 16b slightly inclined downwards towards the outside, which are curved inwards to form a sole 17 placed on the ground.
  • the sliding covering 15 envelops the entire top and the upper end of the lateral flanks.
  • FIG. 6 is a perspective view of a wheel guard edge or slide made up of prefabricated and identical concrete elements 18 which are placed end to end along a road.
  • FIG 7 is a cross section along VII VII of Figure 6.
  • Each element 18 has a base 19 placed on the ground or on a concrete sole between a sidewalk 20 and a road surface 21 or a gutter.
  • Each element further comprises a rib 22 which has a height of the order of 10 cm and which is placed between 20 cm and 30 cm above the floor.
  • the internal face of this rib which is directed towards the roadway has a convex surface.
  • Reference 23 represents water drainage holes.
  • Such concrete wheel surrounds are known. In practice when a vehicle accidentally leaves the road, the wheel often climbs the curb and the vehicle crosses it as soon as the angle of incidence of the vehicle and / or the speed of the vehicle are high. This is due to the high coefficient of friction of the tire against the concrete which leads to good adhesion of the tire to the convex surface of the rib 22 when it strikes the latter.
  • edges 18 are equipped with a sliding coating 24 which is disposed against the convex internal face of the rib 22.
  • the sliding coating 24 allows the tire of the wheel which strikes it to slip and slide longitudinally so that for angles of incidence and / or for higher speeds of a vehicle hitting the curb there is no longer any crossing thereof but straightening of the direction.
  • the sliding coating 24 can be applied to metal profiles which are externally covered with a layer of polytetrafluoroethylene or silicone or graphite and which are fixed to the concrete by adhesive or by seals.
  • the sliding coating 24 may be a layer of a solid or pasty material which is applied directly or bonded to the concrete.
  • FIGS 8 and 9 show cross sections of curbs modified according to the invention.
  • FIG. 8 represents an element 25 of a curb without gutter which is prefabricated in concrete and which has been modified by the addition of a rib 26 in relief towards the road and upwards which has a convex surface.
  • This rib is covered with a metal profile 27 which carries a sliding coating 28.
  • FIG. 9 shows another embodiment of a sidewalk element 29 without a gutter which is prefabricated in concrete and which has also been modified by adding a rib 30 which is raised towards the road and which has a surface convex which carries a metal section 31 which is covered with a sliding coating 32.
  • the sliding coatings 28 and 32 can be bonded directly to the concrete of the border.
  • the slippery surfaces 28 and 32 fitted to curbs prevent motorists from parking their cars on the curb because the wheels of the vehicle slip on the slippery surface.
  • the sliding covering 28 or 32 can be colored yellow to indicate that parking is prohibited at this location.
  • the curbs according to Figures 8 and 9 improve the safety of pedestrians traveling on a sidewalk by preventing vehicles from accidentally or intentionally climbing onto the sidewalk.
  • Figure 10 is a cross section of another embodiment of a precast concrete edge member 33.
  • Such a border can be laid to separate a sidewalk or a lateral median 34 from a road.
  • This element comprises a bearing surface on the ground which has on the side of the road a sole 35 slightly inclined towards the road and on the side opposite the road, a thinning 36 which can serve as a center of rotation in the event of an impact from a vehicle.
  • Reference 37 represents a fixing means such as a nail, a stake, a metal profile which is planted in the ground to prevent the edge from slipping.
  • the upper part of the border element 33 has a curved surface whose convexity is directed towards the road and this curved surface is equipped with a metal profile 38 whose external face is covered with a sliding coating 39 against which abut the tires of a vehicle leaving the road.
  • FIG. 11 represents an element 40 of a prefabricated concrete border which is symmetrical with respect to a longitudinal plane PP ′ and which is intended to be used as a central reservation delimiting two separate pavements.
  • the upper part has a rounded shape and it is equipped with a metal profile 41 covered on its external face with a sliding coating 42.
  • the sliding coatings 39 and 42 can be applied directly to the concrete.
  • FIG. 12 represents a section of a concrete safety barrier 43 having a height of the order of 80 cm.
  • a concrete safety barrier 43 having a height of the order of 80 cm.
  • Such a barrier is generally installed between the two lanes of a highway or along a busy road. It is cast in place by a sliding formwork machine.
  • the upper part of the border has the shape of an almost vertical wall 43a.
  • This low wall is capped with metal profiles in the form of a tunnel 44 which overlap like tiles and which carry on their external face a sliding coating, for example a coating of polytetrafluoroethylene or silicone.
  • the metal sections 44 are fixed to the concrete by gluing or by sealing lugs or by any other equivalent fixing means.
  • FIG. 13 represents a perspective view of an embodiment of a metal profile 44 carrying a sliding coating 45. It can be seen that this profile has at one of its ends a longitudinal notch 46 allowing the nesting of a profile in the following so that the profiles overlap each other on each side of the barrier in the direction of movement of the vehicles indicated by the arrows F.
  • the sliding coating can be glued or fixed directly to the concrete barrier 43.
  • Road safety barriers comprising one or more smooth wooden logs assembled end to end by metal parts.
  • the friction of the tires or of the body of a vehicle against the wood is high and the instantaneous forces which the wooden beams must bear at the time of an impact are therefore high.
  • One way to reduce these forces is to facilitate the sliding of the vehicle against the arm by a method according to the present invention.
  • FIG. 14 is a perspective view of a safety barrier comprising a horizontal rail 47 made of wooden logs which are assembled end to end and mounted on wooden posts 48.
  • FIG. 15 is a horizontal section of FIG. 13 through the horizontal diametral plane of the heddle 47.
  • Figure 16 is a cross section of the rail by the XVI XVI plane.
  • Figure 17 is a cross section of an alternative embodiment.
  • the logs are assembled end to end on the side facing the road by horizontal metal sections 49a, 49b which partially overlap at the junction of two logs.
  • the logs are assembled by horizontal metal sections 50a and 50b which partially overlap at the junction of two logs. It can be seen in FIG. 15 that the ends of the logs can be cut at an angle, for example at 45 °, so that an oblique junction 51 is obtained.
  • assembly bolts 52 pass through one of the logs and the four metal sections.
  • a bolt 53 also links the posts 48 with the profile 50b.
  • the sections 49a and 49b located on the side of the road have a cross section in the shape of an arc of a circle whose radius of curvature is slightly less than the radius of the logs so that they are slightly in relief relative to the external surface of the log as seen in FIG. 16.
  • the sections 49a, 49b carry on their external face a sliding coating 54, for example a coating of polytetrafluoroethylene or silicone.
  • the sections 50a and 50b located on the side opposite the road do not carry any slippery coating. They have a radius of curvature equal to the radius of the logs.
  • the sections 50a and 50b may not extend over the entire length of the heddle and may be limited to fishplates placed astride the junctions 51.
  • Figure 17 shows an alternative embodiment in which the logs are assembled end to end by flat iron fishplates 55 placed in a horizontal groove which extends on either side of the junction between two logs.
  • the smooth has on the side of the road metal profiles 56, U-shaped, which cover the splint 55, whose external face directed towards the road has a sliding coating 57 and which extend over the entire length of the heddle.
  • crash barriers comprising one or more horizontal rails formed by metal tubes which may be of circular section or of elliptical section obtained by crushing a cylindrical tube.
  • FIG. 18 represents a perspective view of a safety barrier comprising a horizontal rail 56 composed of tubes which are assembled end to end by routing or by sleeving by means of sleeves 59 engaged in the tubes and which are mounted on posts 57
  • Figure 19 is a cross section of Figure 18.
  • the metal rail has a sliding coating strip 58 which is located along the generator closest to the road.
  • the sliding coating 58 is for example a bonded layer or strip of polytetrafluoroethylene or silicone or a layer of micronized graphite.
  • sliding coatings constituted by a layer of polytetrafluoroethylene, of solid silicone resin or of graphite applied to a metal support or of a strip of these materials bonded to a profile. metallic. It is specified that in all cases where this is possible the sliding coating can also be applied directly to the edges or rails or barriers of concrete or metal or of wood or plastic.
  • the invention is not limited to coatings composed of polytetrafluoroethylene or solid silicone resin.
  • the sliding coating can be composed of a paraffin wax, that is to say an alkane or a mixture of alkanes comprising a number of carbon atoms greater than 15.
  • waxes are easily meltable and can therefore be melted and applied along a stringer with a layer of molten wax which solidifies by forming a sliding film which retains its properties over time.
  • pulverulent products can be used, for example micronized graphite which can be applied by simple rubbing on the part of the heald exposed to shocks.
  • a powdery or granular product having good slip properties by incorporating it into a binder, for example flakes of graphite or molybdenum sulfide (molybdenite) incorporated in a paint or in a grease which is applied. on the part of the arm exposed to impact.
  • a binder for example flakes of graphite or molybdenum sulfide (molybdenite) incorporated in a paint or in a grease which is applied. on the part of the arm exposed to impact.
  • microbeads or microspheres for example microbeads of glass, ceramic or plastic material having a diameter of less than 3 mm which are fixed by gluing to the part of the heald which is exposed to the shocks of vehicles.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Laminated Bodies (AREA)

Claims (11)

1. Verfahren zum Halten von Fahrzeugen auf einer Straße, bei welchem man entlang der Straße Sicherheitseinrichtungen, wie Wegschranken, Gleitschienen, Randsteine, Schienen aus Rundhölzern oder niedrige Wände, die eine zur Straße parallele durchgehende Fläche bilden, errichtet, dadurch gekennzeichnet, daß man zumindest einen Teil der den Stößen der Fahrzeuge ausgesetzten durchgehenden Fläche mit einem Band aus festem oder pastenartigem Gleitbelag überzieht, der einen statischen Reibungskoeffizienten mit Gummi von unter 0,4 aufweist, sodaß ein zufällig an die durchgehende Fläche stoßendes Fahrzeug entlang des Bandes gleitet.
2. Sicherheitseinrichtung, welche entlang einer Straße oder vor Hindernissen zum Halten von Fahrzeugen errichtet ist, umfassend eine zur Straße parallele und dem Stoß der Fahrzeuge ausgesetzte durchgehende Fläche, dadurch gekennzeichnet, daß zumindest ein Teil der durchgehenden Fläche ein durchgehendes und parallel zur Straße verlaufendes Band aus Gleitbelag aufweist, welcher Gleitbelag aus festem oder pastenartigem Material mit einem statischen Reibungskoeffizienten mit Gummi von unter 0,4 gebildet ist.
3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Gleitbelag aus Polytetrafluorethylen oder einem festen Silikonharz besteht.
4. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Gleitbelag aus einer Schicht von Grafitteilchen gebildet ist, die durch Reibung an der den Stößen ausgesetzten Fläche aufgebracht werden.
5. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Gleitbelag eine Wachs- oder Paraffinschicht ist, bestehend aus einem festen Alkan mit einer Kohlenstoffatomzahl von über 15.
6. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Gleitbelag aus Mikrokugeln mit einem Durchmesser von unter 3 mm besteht, die mit einem Bindemittel an der den Stößen ausgesetzten Fläche fixiert sind.
7. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Einrichtung aus entlang einer Straße stumpf aneinandergefügten Metallprofilen (1) besteht, welche Profile eine gekrümmte Oberfläche (7) aufweisen, deren Konvexität zur Straße gerichtet ist und einen Gleitbelag (8) aufweist, und die auch eine Fläche in Kontakt mit dem Boden aufweisen, welche nach oben zurückgebogen ist.
8. Sicherheitseinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß sie einen Gehsteigrand oder eine Straßenkante umfaßt, bestehend aus Betonfertigelementen (18, 25, 29, 33, 40), die eine horizontale Rippe (22, 26, 30, 33) mit einer zur Straße gerichteten konvexen Seite, die einen Gleitbelag (24, 28, 32, 39, 42) aufweist, umfassen.
9. Sicherheitseinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß sie aus einer Betonschranke (43) besteht, die zwei Fahrbahnen trennt, welche Betonschranke in ihrem oberen Teil eine niedrige Mauer (43a) umfaßt, die durch tunnelförmige Metallprofile (44) abgedeckt ist, welche einander überdecken und an ihrer Außenseite einen Gleitbelag (45) aufweisen.
10. Sicherheitseinrichtung nach Anspruch 2 mit Sicherheitsschienen, bestehend aus Rundhölzern (47), die zwecks Bildung einer horizontalen Leiste stumpf aneinandergefügt sind, dadurch gekennzeichnet, daß die Rundhölzer auf der Straßenseite durch längliche Metallprofile (49a, 49b) aneinandergefügt sind, die einen Gleitbelag (54) aufweisen, sich über die gesamte Länge der Leiste erstrecken und an der Stelle der Verbindungen zwischen zwei Rundhölzern einander überdecken.
11. Sicherheitseinrichtung nach Anspruch 2 mit einer horizontalen Leiste (56), bestehend aus Metallrohren, die stumpf aneinandergefügt und auf Ständern (57) montiert sind, dadurch gekennzeichnet, daß die Rohre einen Gleitbelag (55) aufweisen, der ein längliches Band bildet, welches sich entlang der Erzeugenden des der Straße am nächsten liegenden Rohres befindet.
EP89430011A 1988-05-20 1989-05-12 Verfahren und Vorrichtungen zum Zurückhalten von Fahrzeugen auf einer Strasse Expired - Lifetime EP0343091B1 (de)

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FR8806907A FR2631642B1 (fr) 1988-05-20 1988-05-20 Dispositif de securite place le long des routes
FR8806907 1988-05-20

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EP0343091B1 true EP0343091B1 (de) 1991-10-02

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DE (1) DE68900294D1 (de)
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Also Published As

Publication number Publication date
FR2631642B1 (fr) 1990-09-21
ES2026296T3 (es) 1992-04-16
EP0343091A1 (de) 1989-11-23
DE68900294D1 (de) 1991-11-07
US4982931A (en) 1991-01-08
FR2631642A1 (fr) 1989-11-24

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