EP3143210B1 - Poteau de rue - Google Patents

Poteau de rue Download PDF

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Publication number
EP3143210B1
EP3143210B1 EP14716767.0A EP14716767A EP3143210B1 EP 3143210 B1 EP3143210 B1 EP 3143210B1 EP 14716767 A EP14716767 A EP 14716767A EP 3143210 B1 EP3143210 B1 EP 3143210B1
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EP
European Patent Office
Prior art keywords
street pole
impact absorbing
absorbing deformation
impact
street
Prior art date
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Active
Application number
EP14716767.0A
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German (de)
English (en)
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EP3143210A1 (fr
Inventor
Albert Maes
Carolien Willems
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Safety Product NV
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Safety Product NV
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Publication date
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Priority to PL14716767T priority Critical patent/PL3143210T3/pl
Publication of EP3143210A1 publication Critical patent/EP3143210A1/fr
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Publication of EP3143210B1 publication Critical patent/EP3143210B1/fr
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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
    • 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
    • E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
    • E01F9/631—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact
    • E01F9/635—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact by shearing or tearing, e.g. having weakened zones
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal

Definitions

  • This invention relates to impact absorbing street poles according to the preamble of the first claim.
  • Impacts absorbing street poles are already well known in the art. Design engineers are now indeed increasingly looking at other ways to improve vehicle occupant safety by focussing on the advantages that can be achieved by improving the crashworthiness of street furniture, for example by reducing the effects of a vehicle-street pole impact.
  • impact absorbing street poles have been developed, i.e. a category of poles that are constructed to at least partially absorb the impact of a vehicle with a pole of this type.
  • An example of such an impact absorbing street pole is known from US 2010/0107521 A1 .
  • US 2010/0107521 A1 describes an impact absorbing deformation street pole which is formed in such a way that impact of a vehicle with the pole deforms, i.e.
  • the street pole comprises an elongated extension detachably connected at a pre-determined height to a first part of the street pole such that upon impact on the first part of the street pole, the elongated extension disconnects from the street pole.
  • the inventors have found that providing an impact absorbing street pole with an elongated extension, detachable connected to the first part of the pole substantially reduces the risk for the occupants of the vehicle to be crushed by the bent part of the impact absorbing street pole , more specifically in an impact absorbing deformation street pole, during impact of the vehicle with the street pole.
  • impact is preferably meant in the context of the present invention an impact with a vehicle of about 900 kg at for example a velocity of 35 km/h and than also a higher velocity of 50 km/h, 70 km/h or 100 km/h, according to the European norm EN 12767/2007 or the American norm NCHRP350 or MASH established at substantially the same velocities, for example a velocity of 30 km/h and than also a higher velocity of 50 km/h, 70 km/h or 100 km/h, but with a heavier vehicles.
  • the impact absorbing deformation street pole absorbs at least part of the energy created during the impact, reducing the deformation of the vehicle upon impact and resulting in a less aggressive drop in acceleration with respect to time for the occupant(s) of the vehicle and the elongated extension disconnects from the street pole such that for example the clasp-knife effect, wherein the street pole bends and the bent part of the street pole crushes the vehicle such as for example in impact absorbing deformation street poles, is reduced. Since the bent part of the street pole is reduced in length compared with the deformation street poles of the prior art, both the length of the pole and its momentum when impacting the vehicle are reduced, limiting the damage to the vehicle and the risk of injuries for the occupants of the vehicle.
  • the combination of the impact absorbing street pole with an elongated extension enhances the shock absorbing ability of the assembly and allows it to better control the G-forces upon impact.
  • the combination according to the invention allows the inventors to erect higher and more robust structures for use as roadside hardware.
  • the height of the first part of the street pole is chosen such that upon impact, allows improved control of the G-forces upon impact and, when applied to an impact absorbing deformation street pole, the bent part of the street pole crushing the vehicle does not substantially hit the roof of the vehicle. It has been found that such lengths allow to further reduce the risk that the occupants of the vehicle impacting the street pole are injured is reduced.
  • the height of the first part of the street pole is smaller or larger than the height of the elongated extension, according to the desired configuration.
  • the elongated extension comprises a cylindrical body, for example a hollow cylindrical body, extending around the longitudinal direction along a circumferential direction.
  • Such an arrangement of the elongated extension makes the construction thereof easier since it may be manufactured for example by bending a sheet of a bendable material around a given axis. If the cylindrical body is hollow, it reduces the risk that the elongated extension, when it disconnects from the first part upon impact of a vehicle, might injure people or damage for example vehicles. It also allows for example electrical wires or any other wires or conduits to pass through the hollow cylindrical body, especially if such wires are coming from a first part of the street pole, comprising a hollow cylindrical body wherein the wires are present.
  • an attachment for example any one or more of a lamp, a roadsign, a street sign, a traffic light
  • any attachment can also be attached at other locations, for example in combination with the attachment connected to the elongated extension.
  • an additional attachment can be attached at a far lower location, for example a roadsign at height where traffic participants can easily read the sign, for example car drivers through the windows of their car, for example at some meters above the road.
  • Such an attachment may be fixedly connected to the elongated extension and releasably connected from the street pole together with the elongated extension upon impact of a vehicle on the first part of the street pole, thereby avoiding that a relatively heavy object with a relatively large momentum impacts the vehicle and may harm its occupants or damage property in the surroundings of the street pole, especially when the street pole is an impact absorbing deformation street pole.
  • the circumference of the first part of the street pole is smaller or larger than the circumference of the elongated extension at the predetermined height according to the desired configuration.
  • the elongated extension may be easily connected to the first part of the street pole, especially if the circumference of the first part of the street pole is smaller than the circumference of the elongated extension at the predetermined height and the top of the first part of the street pole snugly fits into the elongated extension, bringing about an increased stability of the assembly of the first part of the street pole and elongated extension and in some cases any supplementary connection means may be dispensed with.
  • any supplementary connection means may be dispensed with.
  • such a connections prevents falling water, such as for example rain, from entering the street pole.
  • the first part of the street pole comprises a cylindrical body extending around the longitudinal direction along a circumferential direction.
  • Such an arrangement of the first part of the street pole makes the construction thereof lighter and easier.
  • the arrangement of the first part of the street pole comprising the body reduces the force of the impact of a vehicle, because such a pole may absorb part of the energy of the impact and deform, making it an impact absorbing deformation street pole, and might reduce the risk of injuries people and/or damages to for example vehicles.
  • the cylindrical body is hollow, it also allows for example electrical wires or any other wires or conduits to pass through the cylindrical body.
  • the cylindrical body is hollow and the cylindrical body of the first part comprises at least one overlap of a first and a second edge of a circumferential side wall forming the hollow cylindrical body, the hollow cylindrical body comprising fastening means for interconnecting the first and the second edge, the overlap having a length extending substantially parallel along the longitudinal direction.
  • the inventor has found that the first part of a street pole having such an overlap allows for interconnecting the first and the second edge by a wide range of different fastening means such as welding, soldering, bolts, rivets, screws, staples, gluing, etc.
  • the street pole according to the invention with such a first part moreover is aesthetically attractive and is safer for people passing the street pole since it does not have a protruding flange.
  • Another option for fastening the adjacent metal sheet(s) which is known from the state of the art is by bending metal sheet(s) such that the adjacent edges become collinearly touching each other. Interconnecting the collinearly touching adjacent edges is however difficult and, in order to achieve a sufficient interconnection of the first and the second edges, is mainly limited to welding. For example, no bolts can directly be used in this interconnection.
  • the metal sheets are coated with zinc, for example by galvanizing, before being bended and interconnected to form the street pole, the adjacent edges can no longer, or least with increased difficulty, be welded together.
  • the side wall and the fastening means are provided to split open along the overlap by breaking away the fastening means upon impact at a place of impact on the first part of the street pole, the hollow cylindrical body, being provided at the place of impact.
  • the first part of such a street pole is designed to absorb an impact of for example a vehicle, such that the kinetic energy of an object, for example a vehicle, impacting the street pole preferably is substantially absorbed by the first part of the street pole by deformation of the first part of the street pole, making the street pole an impact absorbing deformation street pole, due to the impact in stead of for example deformation of the object, which is, in case of for example a vehicle, hazardous for the occupants of the vehicle. It has been found that accidents involving such a street pole impacted by a vehicle have a reduced mortality rate than accidents involving a street pole which does not absorb the energy of the impact with the vehicle.
  • a street pole having the ability to absorb a significant amount of energy of an impact with a vehicle is generally called a street pole which is passively safe.
  • a street pole designed to absorb the energy of an impact with a vehicle is for example described by FI94890B .
  • the street pole according to FI94890B does not comprise the overlap of the street pole of the current preferred embodiment, having a width which extends substantially along the circumferential direction, but instead has an inwardly bent flange, as described above.
  • the fastening means are provided to break away from the overlap and the overlap as a further consequence splits open.
  • the overlap of the first part of the street pole of the current preferred embodiment however allows for an improved absorption of kinetic energy of the vehicle. Without wanting to be bound by any theory, the inventor believes that this is caused by the direction of the width of the overlap, being substantially along the circumferential direction. It has been found that the impact of the vehicle onto the place of impact causes the hollow cylindrical body to collapse in direction of the impact, making the street pole an impact absorbing deformation street pole.
  • first part and a second part of the side wall of the hollow cylindrical body, the second part opposing the first part along the direction of the impact are pushed together in direction of the impact and a third and a fourth part of the side wall of the hollow cylindrical body, the fourth part opposing the third part along a direction substantially perpendicular to the direction of the impact, are pushed away from each other.
  • the relative movement of the first, second, third and fourth part causes the two edges to move in opposite directions along the width direction of the overlap so that the first part of the street pole splits open in longitudinal direction along the overlap by breaking away the fastening means.
  • a similar effect can for example be observed in WO2008151862 .
  • the inventor has found that such an opposing movement of the edges causes the rigidity of the first part of the street pole to drop significantly upon impact, which increases the amount of energy which can be absorbed by the street pole of the current invention. Without wanting to be bound by any theory, the inventor believes that the opposing movement of the edges along the width direction of the overlap causes a shear effect which causes an improved breaking away of the fastening means.
  • the inventor also found that the rigidity of the first part of the street pole of the current invention which has not been impacted remains substantially the same.
  • the street pole according to the current invention in other words allows the rigidity of the street pole to be significantly reduced during impact whereas sustaining the rigidity of the street pole before impact.
  • the fastening means are rivets.
  • the inventor has found that by interconnecting the two edges with rivets, the interconnecting of the two edges becomes increasingly easy and even edges of for examples galvanised steel can for example be interconnected.
  • the rivets provide the unimpacted first part of the street pole with sufficient rigidity, the rivets are also more easily broken away by the opposing movement of the edges along the width of the overlap during impact so that the amount of energy absorbed by the first part of the street pole is further increased, improving the passive safety of the street pole.
  • a street pole 1 comprising an elongated extension 17 connected to a first part 18 of the street pole 1 according to the invention is shown in figure 1 and 2 .
  • the first part 18 of the street pole 1 shown in figures 1 and 2 is fixed to the ground.
  • the first part 18 of the street pole 1 can be fixed to the ground in any way known to the person skilled in the art.
  • the first part 18 of the street pole 1 can for example be dug into the ground, bolted to the ground, etc.
  • the street pole 1 When fixed to the ground, the street pole 1 preferably extends in a substantial upright, preferably vertical, direction as shown in figure 1 .
  • the street pole 1 can however also be provided to be fastened to for example the wall of a building or the like, extending in a substantial horizontal direction.
  • the street pole 1 shown in figures 1 and 2 extends substantially along a longitudinal direction 8.
  • the longitudinal direction 8 extends between a first and a second end.
  • the first end is provided to be fastened to a substrate.
  • the substrate shown is substantially horizontal.
  • the substrate can however also extend substantially vertically or any other direction.
  • the substrate can for example be the ground, a wall of a building, etc.
  • the first end can for example be provided to be dug into the ground.
  • the first end can moreover be provided to be put at least partly in cement.
  • other known ways for fastening the first end to the substrate can be used such as for example bolting the first end to the substrate.
  • the first end preferably comprises means for allowing electrical wires to enter the street pole 1, preferably the first part 18 of street pole 1, for example to provide electricity to lighting or any other electrically powered means.
  • the first end comprises for example an opening leading towards the interior of the street pole 1, preferably the first part 18 of street pole 1. This is however not critical for the invention and the electrical wires can for example also be provided along the exterior of the street pole 1.
  • the second end is provided to be provided with means such as for example lights 19, street signs, traffic signs, traffic lights, directions, billboards, etc.
  • the second end for example can be provided with one, two, three, four or even more horizontally bent arms, each arm comprising lighting means, creating a lighting pole which can be used along streets or highways to illuminate the streets or highways.
  • the second end is part of the elongated extension 17.
  • the street pole 1 can have any shape and dimension which is deemed appropriate by the person skilled in the art.
  • the longitudinal direction 8 of the street pole 1 shown in figures 1 and 2 is substantially straight. However, the street pole 1 can for example be bent along its longitudinal direction 8, for example when it is provided to be mounted to an upright substrate.
  • the street pole 1 comprises an elongated extension 17, detachably connected at a predetermined height h to a first part 18 of the street pole 1.
  • the elongated extension 17 shown in figures 1 and 2 comprises a cylindrical body extending around the longitudinal direction along a circumferential direction.
  • the circumference of the elongated extension 17 may be smaller, equal or lager than the circumference of the first part 18 of the street pole 1 to which it is connected.
  • Figure 1 and 2 show that an attachment 19 is connected to the elongated extension 17.
  • the attachment may be for example a streetlamp, a traffic light, a traffic sign or an advertisement sign but is in no way limited to the examples mentioned herein.
  • the street pole 1, preferably the first part 18, comprises a cylindrical body 6.
  • the cylindrical body 6 extends around the longitudinal direction 8 along a circumferential direction 9.
  • a cross section of such a cylindrical body 6 is for example shown in figures 3 and 5 .
  • the cylindrical body 6 can be provided anywhere along the longitudinal direction 8 of the street pole 1, preferably of the first part 18.
  • the street pole 1, preferably the first part 18 can for example comprise a first longitudinal section being solid or hollow, for example, wood, plastic, etc., and a second longitudinal section being formed by at least one cylindrical body 6.
  • the first and second longitudinal section can be provided anywhere along the longitudinal direction 8 such that the first longitudinal section is provided near the first end and the second longitudinal section is provided near the second end, but preferably the first longitudinal section is provided near the second end and the second longitudinal section is provided near the first end.
  • the street pole 1, preferably the first part 18 is made of at least one cylindrical body 6.
  • Figure 2 shows for example the first part 18 of street pole 1 being made of different subsequent cylindrical bodies 6.
  • the first part 18 of street pole 1 however is made of a single cylindrical body 6, as shown in figure 1 .
  • the inventor has found that when the street pole 1, preferably the first part 18, is made of a single cylindrical body 6, preferably a hollow cylindrical body, the street pole 1 can be easily made.
  • the cylindrical body 6 can be made of any material such as plastic, wood, metal such as for example aluminium, steel, stainless steel, galvanised steel, etc.
  • the cylindrical body 6 can have any shape and dimensions deemed appropriate by the person skilled in the art.
  • the dimensions of the cylindrical body 6 preferably are substantially determined by its length and its diameter 12.
  • the length of the cylindrical body is measured along the longitudinal direction 8 of the street pole 1, preferably the first part 18, whereas the diameter 12 is defined as the diameter of an arc defining the circumferential direction 9 of the cylindrical body 6, as shown in figures 3 and 5 .
  • the diameter 12 of the cylindrical body 6 can be determined by the person skilled in the art.
  • the shape of the cylindrical body 6 is substantially determined by the shape of the cross section of the cylindrical body 6.
  • Two examples of shapes of cross sections, polygonal and round, are respectively shown in figures 3 and 5 .
  • Any other shape of the cross section is however possible and can be determined by the person skilled in the art such as for example, a regular or irregular polygon having 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 or even more vertices 13, an arcuate shape such as an ellipsoid, etc.
  • the cross section of the cylindrical body 6 can change along the length direction of the cylindrical body 6.
  • the area of the cross section can for example become larger or smaller along the length direction or can remain substantially constant.
  • the area of the cross section of the cylindrical body 6 becomes smaller in a direction from the first end of the street pole 1, preferably the first part 18, towards the second end of the street pole 1, as shown in figures 1 and 2 , more preferably, but not essentially, when the cylindrical body 6 has a polygonal cross section.
  • the area of the cross section of the cylindrical body 6 is substantially constant along the longitudinal direction 8 of the street pole 1, preferably the first part 18, more preferably, but not essentially, when a round cross section is used as shown in figure 3 .
  • the cylindrical body 6 of the street pole 1, preferably the first part 18 of street pole 1, comprises a circumferential side wall 7 forming the hollow cylindrical body 6.
  • the circumferential side wall 7 comprises a first 3 and a second 4 edge which overlap to form an overlap 2.
  • a top view of the overlap 2 is for example shown in figure 3 and 5 .
  • the overlap 2 has a length 10 which extends substantially along, preferably parallel to, the longitudinal direction 8, as shown in figures 1 and 2 .
  • the length 10 of the overlap 2 can however extend along any possible direction extending substantially along the longitudinal direction 8.
  • the circumferential side wall 7 can be a single piece or can be made of different pieces.
  • the pieces can be adjoined using any method known in the art such as welding, soldering, gluing, stapling, bolting, screwing, riveting, etc.
  • the overlap 2 can be positioned on every location along the circumferential side wall 7.
  • the overlap 2 preferably is provided in between two adjacent vertices 13 of the polygonal cross section.
  • the overlap 2 more preferably is provided substantially equidistant from the two adjacent vertices 13.
  • the overlap 2 can however be provided at every location deemed appropriate by the person skilled in the art such as for example at or near a vertex 13.
  • the street pole 1 can also have a plurality of overlaps 2.
  • the street pole 1 can have two, three, four five six, seven, etc. overlaps 2 depending on for example the dimensions of the street pole 1. It has been found that by providing multipleoverlaps, the impact absorbing properties can be better controlled. Especially when street poles having a relative large diameter are being provided, it has been found that although the increased diameter increases the strength of the street pole 1, the plurality of overlaps can nevertheless provide the desired impact absorbing properties.
  • the overlaps 2 are distributed substantially evenly over the circumference of the street pole 1 so as to provide substantially homogeneous impact absorbing properties.
  • the overlap 2 preferably is provided between adjacent vertices 13 leaving, for example, the same, or for example substantially the same, number of vertices 13 in between overlaps 2. So for example, when the hollow cylindrical body 6 is a regular convex nonagon polygon, it has nine vertices 13 and the number of overlaps can be for example three, with 3 vertices 13 or two sides between vertices 13 in between overlaps 2.
  • the hollow cylindrical body 6 comprises fastening means 5 for interconnecting the first 3 and second 4 edge of the circumferential side wall 7.
  • Any fastening means 5 known to the person skilled in the art can be used for example bolts, nuts, rivets, screws, nails, staples, glue, welds, solderings, etc.
  • the friction caused by the pressing of one edge to the other may cause that a sufficient interconnection of the first 3 and the second 4 edge is reached.
  • the fastening means 5 are the cooperating first 3 and second 4 edge and no additional bolts, nuts, rivets, screws, nails, staples, glue, welds, solderings, etc. are necessary.
  • breaking away the fastening means 5, means that the friction between the first 3 and the second 4 edge is overcome and that first 3 and the second 4 edge are allowed to move in opposite directions along the width direction of the overlap 2.
  • the fastening means 5 are preferably provided along the entire length 10 of the overlap 2, for example on regular distances when for example nuts, bolts, screws, nails, staples or the like are used or preferably along the entire length 10 of the overlap 2 when for example cooperating first 3 and second 4 edges, glue, welds, solderings, or the like are used. Other configurations of the fastening means 5 are however possible.
  • the overlap 2 has a width 11 which extends substantially along the circumferential direction 9.
  • the first 3 and the second 4 edge of the circumferential side wall 7 in other words overlap each other along the circumferential direction 9.
  • the width 11 is for example shown in figures 1 and 2 .
  • the width 11 of the overlap 2 can be determined by the person skilled in the art. Preferably, the width 11 of the overlap is determined in function of the fastening means 5 and/or the required strength of the street pole 1. For example, when rivets, bolts, nails, screws, staples, etc. are used to interconnect the first 3 and the second 4 edge of the cylindrical body 6, the width 11 needs to be sufficient to receive the fastening means 5 and to offer a sufficient interconnection of the first 3 and the second 4 edge. When using other fastening means 5 such as for example glue, welds, solderings, etc. the width 11 needs to be adapted to the interconnecting characteristics of the fastening means 5 such that the width 11 needs to be increased or can be decreased in order to offer a sufficient interconnection of the first 3 and the second 4 edge.
  • fastening means 5 such as for example glue, welds, solderings, etc.
  • the width 11 can for example be as small as 1mm for some types of fastening means 5 or the width 11 can extend up to for example substantially the entire width of the sides between the vertices 13 and/or more than 100% of the circumference of the hollow cylindrical body 6 in which case the side wall 7 comprises at least two layers wound around the longitudinal direction of the street pole 1, preferably of the first part 18 of street pole 1.
  • an increased width 11 of the overlap 2 increases the friction between the first 3 and the second 4 edge of the overlap 2 so that additional fastening means 5 such as bolts, nuts, rivets, screws, nails, staples, glue, welds, solderings, etc. can be avoided.
  • the increased width of the overlap 2 allows that the fastening means 5, if they are for example distinctly provided to the street pole 1, are positioned in a staggered position with respect to each other along longitudinal direction of the street pole 1.
  • the width 11 of the overlap 2 can be substantially constant along the longitudinal direction 8 of the street pole 1, especially if it is for example expressed as percentage of the sides between two vertices 13, preferably of the first part 18 of street pole 1. This is however not critical for the invention and the width 11 can change along the longitudinal direction 8 of the street pole 1, preferably of the first part 18 of street pole 1.
  • the hollow cylindrical body 6 preferably is made of a bendable material such as for example metal. This way the hollow cylindrical body 6 can be made by bending a sheet 14 of the bendable material, preferably a metal sheet, into the desired shape having the desired cross section.
  • a bendable material such as for example metal.
  • the hollow cylindrical body 6 can be made by bending a sheet 14 of the bendable material, preferably a metal sheet, into the desired shape having the desired cross section.
  • any other material is possible as described above and the hollow cylindrical body 6 can for example also be cast.
  • the hollow cylindrical body 6 has a polygonal cross section, more preferably a regular polygonal cross section, as shown in figure 1
  • the hollow cylindrical body 6 preferably is made by bending at least one sheet 14 of the bendable material along longitudinal folding lines forming the vertices 13 of the polygonal cross section.
  • these folding lines are created by pushing a longitudinal edge into and/or along the sheet of bendable material. Any other way of making the cylindrical body is however possible.
  • the cylindrical body 6 in this case has an uneven number of vertices and the overlap 2 is provided in between two adjacent vertices 13, the last folding line being created being the folding line opposing the overlap 2.
  • the inventor has found that such bending of the sheet 14 of bendable material allows the longitudinal edge to be retracted more easily, after being pushed into and/or along the sheet 14 of bendable material in order to create the folding line, in between the first 3 and the second 4 edge before the overlap 2 is created.
  • the cylindrical body 6 can also comprise an even number of vertices.
  • the cylindrical body 6 preferably is made by rolling at least one sheet 14 of bendable material, preferably metal.
  • cylindrical body 6 preferably is made of a single bent sheet 14, as shown in figures 3 and 5
  • the cylindrical body 6 can also be made of several bent sheets 14 forming the different pieces of the circumferential side wall 7, as discussed above.
  • the side wall 7 and the fastening means 5 are provided to split open along the overlap 2 by breaking away the fastening means 5 upon impact at a place of impact 15 on the street pole 1, the cylindrical body 6, being provided at the place of impact 15.
  • the side wall 7 and the fastening means 5 are provided to split open along the overlap 2 by breaking away the fastening means 5 upon impact with a vehicle 16.
  • the vehicle 16 can be any vehicle 16, preferably motorised, known to the person skilled in the art such as a car, truck, motorcycle, etc.
  • street poles 1 preferably first parts 18 of street poles 1 which are provided to be fixed to the ground since such poles 1 are generally provided next to roads on which traffic passes to street pole 1.
  • impact in the context of this application is for example meant an impact caused when such a vehicle 16 drives into the first part 18 of street pole 1 for example more than 0 km/h, more than 5 km/h, more than 10 km/h, more than 20 km/h or more than 30 km/h or even higher.
  • the side wall 7 and the fastening means 5 must be such as to resist normal forces acting on the first part 18 of street pole 1 such as for example varying winds, relative small impacts caused by for example parking vehicles, etc. when the first part 18 of street pole 1 has not been impacted by vehicle 16.
  • FIG. 4 Examples of a vehicle impacting such a first part 18 of street pole 1 are shown in figures 4 and 6a - 6d .
  • the first part of street pole 1 is provided not to break away from its substrate upon impact but to remain fixed to its substrate, allowing the energy of the impact to be absorbed until the speed of the vehicle 16 impacting the street pole 1 has been significantly reduced. Therefore, after impact of the vehicle 16 with the first part 18 of street pole 1, the risk that the vehicle 16 impacts a further obstacle after impacting the first part 18 of street pole 1 is significantly reduced.
  • the first end preferably is cast into cement, as discussed above. However, this is not critical for the invention and any other connection of the first part 18 of street pole 1 to the substrate may be used.
  • a vehicle 16 impacting the street pole 1 causes the first part 18 of street pole 1 to be impacted at the place of impact 15.
  • the preferred hollow cylindrical body 6 then splits open at the place of impact 15. Subsequently, when the impact is large enough the place of impact 15 moves along the longitudinal direction 8 of the street pole 1 as shown in figures 6a - 6d such that a part of the first part 18 of street pole 1 moves under the vehicle 16 while another part folds in the direction of the vehicle 16, as shown in figure 6d .
  • the kinetic energy of the vehicle 16 can be absorbed until the speed of the vehicle 16 is reduced.
  • the first and second edges 3, 4 at the moving place of impact 15 keep moving away from each other along the width direction 11 of the overlap 2 such that the fastening means are broken away and the overlap 2 splits open along the longitudinal direction 8 until the speed of the vehicle 16 has been significantly reduced.
  • the speed of the vehicle 16 after impact with the first part 18 of street pole 1 is reduced such that it is less than 50 km/h measured after 12m after the initial impact.
  • the impact absorbing street pole 1 absorbs at least part of the energy created during the impact, reducing the deformation of the vehicle 16 upon impact and resulting in a less aggressive drop in acceleration with respect to time for the occupant(s) of the vehicle 16 and the elongated extension 17 disconnects from the first part 18 of the street pole 1, as shown in figure 6b , such that for example the clasp-knife effect, wherein the street pole 1 bends and the bent part of the street pole 1 crushes the vehicle 16, as for example shown in figure 4 , is reduced, as illustrated in figures 6 d.
  • Figure 6d no longer shows the extension 17 as it has fallen, for example, next to the vehicle 16.
  • bent part of the street pole 1 is reduced in length compared with the street poles of the prior art, and only comprises the first part 18 of the street pole 1 both the length of the pole 1 and its momentum when impacting the vehicle 16 are reduced, limiting the damage to the vehicle 16 and the risk of injuries for the occupants of the vehicle 16.
  • the material of the extension 17 is less critical for the invention and can be substantially chosen by the person skilled in the art in function of the envisaged application.
  • the extension for example can be a hollow part, for example a bent metal sheet, or even solid, for example wood.
  • the part that folds in direction of the vehicle 16, if present, can fold onto the vehicle 16 or next to the vehicle 16.
  • the street pole 1 When the street pole 1 is provided to fold next to the vehicle the occupants of the vehicle are even more protected.
  • the preferred deformable cylindrical body 6 must be provided at the place of impact 15 in order to be able to absorb the energy of the impact. Therefore, the preferred cylindrical body 6 provided to split open upon impact is preferably provided at a height which can be impacted by vehicles 16.
  • the cylindrical body 6 is for example provided near the substrate.
  • the cylindrical body 6 preferably extends along substantially the entire length of the first part 18 of street pole 1 along the longitudinal direction 8, as shown in figures 1 and 2 .
  • the overlap 2 extends along substantially the entire length of the street pole 1
  • larger impacts can be absorbed since the absorption of the impact by the splitting open of the cylindrical body 6, the braking away of the fastening means 5 and the unfolding of the cylindrical body 6 can continue along the entire length of the street pole 1.
  • a same effect can also be achieved when the first part 18 of street pole 1 is formed of subsequent cylindrical bodies 6, as shown in figure 2 .
  • the cylindrical body 6 in such an embodiment preferably is made from metal, such as for example steel, aluminium, etc. More preferably the cylindrical body 6 is made from steel.
  • material of the side wall 7 of the cylindrical body 6 has a yield strength Re of between 50N/mm 2 - 700N/mm 2 , preferably 200N/mm 2 - 550N/mm 2 , more preferably 330N/mm 2 - 420N/mm 2 .
  • the material of the side wall 7 has a tensile strength Rm of between 50N/mm 2 - 1350N/mm 2 , preferably 350N/mm 2 - 1050N/mm 2 , more preferably 600N/mm 2 - 700N/mm 2 , more preferably at least 410 N/mm 2 , for example 410 N/mm 2 - 700N/mm 2 .
  • the material of the side wall 7 has a minimal elongation before breaking A80 of at least 5%, preferably at least 15%, more preferably at least 20%.
  • the side wall 7 has a thickness of between 20mm - 0.5mm, preferably 10mm - 1mm, more preferably 5mm - 1mm, even more preferably 2mm.
  • the cylindrical body 6 has a diameter 12 at the place of impact 15 of between 50mm - 500mm, preferably 150mm - 400mm, more preferably 200mm - 350mm.
  • the width 11 of the overlap 2 is at least 0.1%, preferably maximal 100%, more preferably between 0.1% and 10%, most preferably between 2% and 3.5% of the circumference of the cylindrical body 6.
  • a first example is a first part 18 of the street pole 1 consisting of a single cylindrical body 6 having a length of about 6 - 7m, a diameter of about 320mm near the first end of the first part 18 of street pole 1 and a substantially constant width 11 of the overlap 2 of 20mm which is 2,6% of the diameter 12 near the first end.
  • Another example is a first part 18 of street pole 1 consisting of a single cylindrical body 6 having a length of about 10m, a diameter of 208mm near the first end of the street pole 1 and a substantially constant width 11 of the overlap 2 of 20mm which is 3,06% of the diameter 12 near the first end.
  • a first part 18 of the street pole 1 consisting of a single cylindrical body 6 having a length of about 8m of which 2m is put into the ground, a diameter of about 322mm near the first end of the first part 18 of street pole 1 at the ground level.
  • the elongated extension has a height of about 14m.
  • the elongated extension 17 and the first part 18 are provided such that the elongated extension 17 is slid over the first part 18 with the diameter of the first part 18 at the location where the elongated extension 17 is slid over it is about 234mm and the diameter of the elongated extension 17 at that location being about 260mm and the first part 18 and the elongated extension 17 overlapping for about 500mm.
  • the total height of the street pole 1 therefore is about 21.5m of which about 2m is put into the ground.
  • the hollow cylindrical body 6 has a polygonal cross section, for example, a regular convex nonagon polygon with for example three overlaps 2, with 3 vertices 13 or two sides between vertices 13 in between the overlaps 2.
  • the fastening means 5 have a shear strength, this is the strength in width 11 direction of the overlap 2, of between 2000N - 7000N, preferably 3000N - 6000N, more preferably 4000N - 5000N, most preferably 4100N - 4500N.
  • the fastening means 5 are rivets since the inventor found that they offer a good and easy interconnection of the first and the second edge 3, 4 while being provided to brake away when the first and the second edge 3, 4 move away from each other and allowing an easy interconnection of the first and the second edge 3, 4.
  • any other fastening means 5 can be used instead, as described above.
  • the first part 18 of street pole 1 may be placed such that the width 11 of the overlap 2 extends substantially along a direction substantially parallel to the direction of oncoming traffic.
  • the width 11 of the overlap 2 extends substantially along a direction having an angle of between 0° - 90°, 0° - 180°, 0° - 45°, preferably 10° - 30°, more preferably 15° - 25°, most preferably 20° with the direction of oncoming traffic.
  • the overlap 2 can however also be provided in any other possible direction.
  • the first part 18 of the street pole 1 can for example be placed such that the width 11 of the overlap 2 extends substantially along a direction which is substantially perpendicular to the direction of oncoming traffic or any other possible direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Body Structure For Vehicles (AREA)

Claims (22)

  1. Poteau de rue à déformation à absorption d'impact (1) s'étendant sensiblement le long d'une direction longitudinale (8), dans lequel le poteau de rue à déformation à absorption d'impact (1) plie suite à l'impact d'un véhicule et la partie pliée du poteau de rue à déformation à absorption d'impact écrase le véhicule, caractérisé en ce que la hauteur de la première partie de pliage (18) du poteau de rue à déformation à absorption d'impact est choisie de sorte que suite à l'impact le poteau de rue à déformation à absorption d'impact permette une commande améliorée des forces G et la partie pliée du poteau de rue à déformation à absorption d'impact écrasant le véhicule ne touche pas sensiblement le toit d'un tel véhicule impactant et dans lequel le poteau de rue à déformation à absorption d'impact (1) comprend une extension allongée (17) raccordée de manière détachable à une hauteur prédéterminée à ladite première partie (18) du poteau de rue à déformation à absorption d'impact (1) de sorte que suite à l'impact sur la première partie (18) du poteau de rue à déformation à absorption d'impact (1), l'extension allongée (17) se détache du poteau de rue à déformation à absorption d'impact (1).
  2. Poteau de rue à déformation à absorption d'impact (1) selon la revendication 1, caractérisé en ce que la hauteur de la première partie (18) du poteau de rue à déformation à absorption d'impact (1) est inférieure ou supérieure à la hauteur de l'extension allongée (17).
  3. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'extension allongée (17) et/ou la première partie (18) du poteau de rue (1) comprend un corps cylindrique s'étendant autour de la direction longitudinale le long d'une direction circonférentielle.
  4. Poteau de rue à déformation à absorption d'impact (1) selon la revendication 3, caractérisé en ce que la circonférence de la première partie (18) du poteau de rue à déformation à absorption d'impact (1) est inférieure à la circonférence de l'extension allongée (17) à la hauteur prédéterminée.
  5. Poteau de rue à déformation à absorption d'impact (1) selon la revendication 3 ou 4, caractérisé en ce que le corps cylindrique (6) de la première partie (18) est creux et comprend au moins un chevauchement (2) d'une première (3) et d'une seconde arête (4) d'une paroi latérale circonférentielle (7) formant le corps cylindrique (6), le corps cylindrique (6) comprenant un moyen de fixation (5) pour raccorder entre elles la première et la seconde arête (3, 4), le chevauchement (2) présentant une longueur (10) s'étendant sensiblement parallèlement le long de la direction longitudinale (8).
  6. Poteau de rue à déformation à absorption d'impact (1) selon la revendication 5, caractérisé en ce que le chevauchement (2) présente une largeur (11) s'étendant sensiblement le long de la direction circonférentielle (9).
  7. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 5 à 6, caractérisé en ce que la paroi latérale (7) et le moyen de fixation (5) sont prévus pour se fendre le long du chevauchement (2) par détachement du moyen de fixation (5) suite à l'impact à un endroit d'impact (15) sur le poteau de rue à déformation à absorption d'impact (1), le corps cylindrique (6) étant prévu à l'endroit d'impact (15).
  8. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 5 à 7, caractérisé en ce que le matériau de la paroi latérale (7) présente une limite d'élasticité (Re) entre 50 N/mm2 et 700 N/mm2, de préférence 200 N/mm2 et 550 N/mm2, de manière davantage préférée entre 330 N/mm2 et 410 N/mm2.
  9. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 5 à 8, caractérisé en ce que le matériau de la paroi latérale (7) présente une résistance à la traction (Rm) entre 50 N/mm2 et 1 350 N/mm2, de préférence entre 350 N/mm2 et 1 050 N/mm2, de manière davantage préférée entre 600 N/mm2 et 700 N/mm2.
  10. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 5 à 9, caractérisé en ce que le matériau de la paroi latérale (7) présente un allongement minimal avant rupture (A80) d'au moins 5 %, de préférence 15 %, de manière davantage préférée 21 %.
  11. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 5 à 10, caractérisé en ce que la paroi latérale (7) présente une épaisseur entre 20 mm et 0,5 mm, de préférence entre 10 mm et 1 mm, de manière davantage préférée entre 5 mm et 1 mm, de manière encore plus préférée de 2 mm.
  12. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 3 à 11, caractérisé en ce que le corps cylindrique (6) de la première partie (18) présente un diamètre (12) à l'endroit d'impact (15) entre 50 mm et 500 mm, de préférence entre 150 mm et 400 mm, de manière davantage préférée entre 200 mm et 350 mm.
  13. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 5 à 12, caractérisé en ce que la largeur (11) du chevauchement (2) est au moins de 0,1 %, de préférence au maximum 100 %, de manière davantage préférée au maximum entre 2 % et 3,5 % de la circonférence du corps cylindrique (6).
  14. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 5 à 13, caractérisé en ce que les moyens de fixation (5) présentent une résistance au cisaillement entre 2 000 N et 7 000 N, de préférence entre 3 000 N et 6 000 N, de manière davantage préférée entre 4 000 N et 5 000 N, de manière préférée entre toutes entre 4 100 N et 4 500 N.
  15. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 5 à 14, caractérisé en ce que les moyens de fixation (5) sont des rivets.
  16. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 3 à 16, caractérisé en ce que le corps cylindrique (6) présente une section transversale ronde.
  17. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 3 à 16, caractérisé en ce que le corps cylindrique (6) de la première partie (18) présente une section transversale polygonale régulière.
  18. Poteau de rue à déformation à absorption d'impact (1) selon la revendication 17, caractérisé en ce que le chevauchement (2) est sensiblement positionné au centre entre deux sommets adjacents (13) de la section transversale polygonale régulière.
  19. Poteau de rue à déformation à absorption d'impact (1) selon la revendication 16 ou 17, caractérisé en ce que la section transversale polygonale régulière comprend un nombre impair de sommets (13).
  20. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications 5 à 19, caractérisé en ce que la paroi latérale circonférentielle (7) formant le corps cylindrique (6) comprend au moins une feuille métallique pliée (14).
  21. Poteau de rue à déformation à absorption d'impact (1) selon la revendication 20, caractérisé en ce que la feuille métallique (14) est en acier.
  22. Poteau de rue à déformation à absorption d'impact (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une attache (19) est raccordée à l'extension allongée (17).
EP14716767.0A 2014-03-14 2014-03-14 Poteau de rue Active EP3143210B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14716767T PL3143210T3 (pl) 2014-03-14 2014-03-14 Słup uliczny

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/055161 WO2015135594A1 (fr) 2014-03-14 2014-03-14 Poteau de rue

Publications (2)

Publication Number Publication Date
EP3143210A1 EP3143210A1 (fr) 2017-03-22
EP3143210B1 true EP3143210B1 (fr) 2018-07-04

Family

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EP14716767.0A Active EP3143210B1 (fr) 2014-03-14 2014-03-14 Poteau de rue

Country Status (10)

Country Link
US (1) US20170096786A1 (fr)
EP (1) EP3143210B1 (fr)
CN (1) CN106232902A (fr)
AU (1) AU2014386361A1 (fr)
CA (1) CA2941851A1 (fr)
EA (1) EA031844B1 (fr)
ES (1) ES2689659T3 (fr)
IL (1) IL247762A0 (fr)
PL (1) PL3143210T3 (fr)
WO (1) WO2015135594A1 (fr)

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EP3372731B1 (fr) * 2017-03-08 2020-07-22 Toll Collect GmbH Système de gestion du trafic
CN109322526A (zh) * 2018-11-23 2019-02-12 江苏铭远杆塔有限公司 耐撞击安全型电力杆
ES2927157B2 (es) 2021-04-30 2023-03-07 Road Steel Eng Sl Dispositivo de union para poste de estructura soporte del equipamiento de vias de circulacion, y estructura soporte del equipamiento de vias de circulacion que incluye dicho dispositivo de union

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Also Published As

Publication number Publication date
US20170096786A1 (en) 2017-04-06
EA031844B1 (ru) 2019-02-28
AU2014386361A1 (en) 2016-11-03
EA201691833A1 (ru) 2017-02-28
CA2941851A1 (fr) 2015-09-17
PL3143210T3 (pl) 2019-01-31
WO2015135594A1 (fr) 2015-09-17
CN106232902A (zh) 2016-12-14
ES2689659T3 (es) 2018-11-15
EP3143210A1 (fr) 2017-03-22
IL247762A0 (en) 2016-11-30

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