EP4083323B1 - Support structure for road equipment - Google Patents

Support structure for road equipment Download PDF

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Publication number
EP4083323B1
EP4083323B1 EP22382282.6A EP22382282A EP4083323B1 EP 4083323 B1 EP4083323 B1 EP 4083323B1 EP 22382282 A EP22382282 A EP 22382282A EP 4083323 B1 EP4083323 B1 EP 4083323B1
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EP
European Patent Office
Prior art keywords
pole
hollow drum
wall portion
support structure
structure according
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.)
Active
Application number
EP22382282.6A
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German (de)
English (en)
French (fr)
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EP4083323A1 (en
Inventor
Luis Miguel HERNANDO DEL DUJO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Road Steel Engineering SL
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Road Steel Engineering SL
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Filing date
Publication date
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Publication of EP4083323A1 publication Critical patent/EP4083323A1/en
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Publication of EP4083323B1 publication Critical patent/EP4083323B1/en
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    • 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
    • E04H12/22—Sockets or holders for poles or posts
    • E04H12/2207—Sockets or holders for poles or posts not used
    • E04H12/2215—Sockets or holders for poles or posts not used driven into the ground
    • 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
    • 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
    • E01F9/673—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing for holding sign posts or the like
    • E01F9/685—Subsoil means, e.g. foundations
    • 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
    • E04H12/22—Sockets or holders for poles or posts
    • E04H12/2207—Sockets or holders for poles or posts not used
    • E04H12/2215—Sockets or holders for poles or posts not used driven into the ground
    • E04H12/223—Sockets or holders for poles or posts not used driven into the ground with movable anchoring elements; with separately driven anchor rods

Definitions

  • the present invention is encompassed in the field of support structures for road equipment on public or private roads such as, freeways, highways, streets, parking, etc.
  • these support structures may include columns, lampposts or poles, found in the vicinity of road traffic, which are usually fixed at their lower end to the terrain by means of a foundation, and at their upper end there is fixed, either directly or indirectly through an extension arm, at least one item of road equipment, such as lighting means or a luminaire, a sign panel or board, a traffic signal, a support bracket for overhead lines, whether these are utility and/or telephone lines, etc.
  • the invention specifically relates to a support structure for road equipment comprising an anchoring or connecting device for anchoring or connecting the pole of the support structure for road equipment to the foundation, where the connecting device acts or behaves like a structural fuse capable of absorbing an impact of a vehicle against the pole, with said device collapsing in a manner that is controlled and safe for the occupants of the vehicle impacting against said pole, as well as for third parties, whether other users of the road or pedestrians.
  • support structures made of metal or another material.
  • support structures based on columns, masts, poles, lampposts, etc., which support road equipment such as lamps, information boards, traffic signs, street signs, traffic signals, public telephones, support brackets for overhead lines, etc., or any combination thereof. Said equipment may even be supported by more than one support structure, if required.
  • Poles of support structures for road equipment have traditionally been designed and sized as rigid structures capable of withstanding mechanical service demands, such as wind loads, their own weight, snow, etc., but they have not been specifically designed to behave in a safe manner in the case of vehicle impacts.
  • mechanical service demands such as wind loads, their own weight, snow, etc.
  • the more rigid the pole the more it will resist against the aforementioned mechanical demands, but the more dangerous it will also be in the case of a vehicle impact against same.
  • these poles may constitute a rigid obstacle for vehicles that come off the road out of control and impact against said poles, and the consequences of the direct impact against said poles usually lead to a series of sometimes fatal physical damage and injuries to the occupants of the vehicle, and even for third parties, whether other users of the road and/or pedestrians.
  • the invention seeks to find advantages that can be obtained by improving behavior in the case of possible impacts against poles forming support structures for road, street, or similar equipment, for example, by reducing the effects of a vehicle impact against the pole, column, or the like, lessening the severity of the injuries or damages sustained by the occupants of the vehicle as well as third parties, whether other users of the road and/or pedestrians.
  • pole types have been developed and manufactured such that in the case of a vehicle impact, said pole types deform or break in a more or less controlled manner.
  • detachable poles comprising one or more "frangible” sections at different heights of the pole are known, for example, as shown in patent document EP 3143210 , such that given the weight and wind load demands, the "frangible” section transmits bending stresses and the pole resists, keeping its shape intact; however, when a vehicle impacts against said pole, the "frangible” section breaks due to shear stresses, and the upper part of said pole detaches and, therefore, reduces the level of severity of the impact for the occupants of the vehicle, because there is a low deceleration level in the vehicle when the upper part of the support pole detaches very easily without putting up significant resistance.
  • collapsible or fusible poles are also known, such as those shown in patent documents WO 2008/151862 and WO 2006/093415 , having a mechanism or a particular form of manufacture making the pole capable of withstanding weight and wind load demands, however, in the case of an impact of a vehicle, it loses its initial rigidity and collapses, being caused to collapse by the vehicle without detaching from the foundation. Upon impact, the pole collapses as if it were "molted snakeskin".
  • a traffic sign support which has a support pipe for the traffic sign(s), a socket which is firmly anchored in the ground, and an intermediate sleeve which is fitted together at one end with the socket and at the other end with the support pipe, wherein the use of the intermediate sleeve has the advantage that, in the event of damage to the traffic sign support, for example, by a vehicle travelling on, only the intermediate sleeve is bent, but the support pipe and the socket can be used further. It being only necessary to replace the intermediate sleeve in the event that it is damaged. Also, the intermediate sleeve prevents that the traffic sign support breaks down completely and can swirl freely by the air, therefore, the risks of injury to road users are avoided.
  • the patent document SE0901068 shows a post collar comprising an upper end which is fixed to a first post part and a lower end which is fixed to a second post part, the second post part is fixed to the ground, wherein the post collar, between its ends, includes a zone of weakness, with vertical or horizontal slots, configured to bend when an impact force acts on the post, just like in EP0156158 .
  • US5060437 describes a support structure with a pole having its end being secured to a tubular base by means of an adhesive, the base having a peripheral flange secured to the anchors of a concrete foundation.
  • the object of the invention relates to a support structure for road equipment comprising a pole formed by a hollow cylindrical, elliptical, prismatic, polygonal, truncated pyramid-shaped, or truncated cone-shaped mast, comprising a lower end adapted for being fixed to a terrain by means of a foundation, wherein the support structure additionally comprises a connecting device arranged between the lower end of the pole and the foundation, so that the connecting device provides deformation-induced absorption capacity for the pole of support structures for road equipment.
  • the connecting device comprises a hollow drum, formed by a perimetral wall having a circular, elliptical, or polygonal cross-section, i.e., it is a cylindrical, elliptical, or prismatic body which is adapted for being arranged with its longitudinal axis parallel to the longitudinal axis of the pole to which it is coupled.
  • the hollow drum comprises a first end, a second end, and a central part arranged between said ends, where the first end of the hollow drum is adapted for being fixed to a fixing foundation, and its second end is fixed to a lower end of the pole
  • the fixing of the first end of the hollow drum to the foundation is achieved by means of an anchoring piece which is connected, preferably welded, to said first end of the hollow drum
  • the hollow drum is adapted for fitting onto the outside of the lower end of the pole, and the second end is fixed to the lower end of the pole, wherein, in use, the second end of the hollow drum, which is fixed to the lower end of the pole, is arranged below the anchoring piece for anchoring to the foundation, and the hollow drum and the lower end of the pole are arranged inside a hollow space formed in the foundation.
  • the central part of the hollow drum comprises a wall portion, weakened with respect to the ends of the hollow drum, which is configured for deforming in a controlled manner, under compression, when an impact force acts against the pole.
  • Deformation of the wall portion of the central part of the hollow drum in a controlled manner means that in the case of a vehicle impact against the pole, said wall portion collapses progressively, successfully absorbing the impact force and progressively reducing the velocity of the vehicle by at least 50% upon impact.
  • the lower end of the pole With the controlled deformation of the wall portion of the central part of the hollow drum, the lower end of the pole is adapted for being displaced upwards or being raised and twisted in the direction of the impact force, while the lower end of the pole remains fixed to the second end of the hollow drum.
  • the connecting device thus constitutes the connecting element between the pole of the support structure for road equipment and the foundation, such that it allows the pole to be fixed to the terrain, conferring a rigid structure to said pole assuring an encasing sufficient for withstanding its own weight and static wind loads in the same way a conventional pole would.
  • the pole manufactured from a material or materials with an elastic limit within a certain predetermined range, upon losing rigidity at its lower end as a result of the connecting device as described above, said pole is easily deformable by the vehicle, such that it deforms rapidly, with its contour crumpling up as if it were "snakeskin", and is caused to collapse by the vehicle without putting up major resistance.
  • the deformation and collapsing of the pole also contributes to absorbing part of the energy from the impact and furthermore allows a much more gradual deceleration of the vehicle to be achieved, and therefore the severity of said impact is largely reduced for the occupants of the vehicle.
  • the combination of the controlled deformation of the wall portion of the central part of the hollow drum of the connecting device connecting the pole to the foundation, and the likewise controlled deformation sustained by the walls of the pole during their collapse, after the raising and twisting of its lower end, allows the absorption of the energy from the impact to be improved and a smooth deceleration of the vehicle to be achieved, reducing the severity of the impact for the occupants of the vehicle.
  • the present invention relates to a support structure for road equipment on either public or private roads such as freeways, roads, streets, parking, etc.
  • the support structure for road equipment (3) comprising a pole (2), for example, made of metal or a metal alloy, formed by a hollow cylindrical, elliptical, prismatic, polygonal, truncated pyramid-shaped, or truncated cone-shaped mast, comprising a lower end (2.1) adapted for being fixed to a terrain (6) by means of a foundation (4).
  • the support structure further comprises a connecting device (1) which is arranged between the lower end (2.1) of the pole (2) and the foundation (4).
  • the connecting device (1) basically comprises a hollow drum (1.1), having a circular, elliptical, or polygonal cross-section, preferably made of metal or a metal alloy, which is adapted for being arranged with its longitudinal axis parallel to a longitudinal axis of the pole (2) of a support structure for road equipment (3).
  • the hollow drum (1.1) comprises a first end (1.11) and a second end (1.12), where the first end (1.11) is adapted for being fixed to the foundation (4), and the second end (1.12) is adapted for being fixed to a lower end (2.1) of the pole (2).
  • the first end (1.11) of the hollow drum (1.1) is fixed to the foundation (4) by means of an anchoring piece (1.2), where the hollow drum (1.1) is adapted for fitting onto the outside of the lower end (2.1) of the pole (2), such that in use, the second end (1.12) of the hollow drum (1.1) which is fixed to the lower end (2.1) of the pole (2) is arranged below (at a lower height than) the anchoring piece (1.2) for anchoring to the foundation (4), for example, a base plate, which is fixed, preferably by welding, to the first end (1.11) of the hollow drum (1.1), and the hollow drum (1.1) and the lower end (2.1) of the pole (2) are arranged inside a hollow space (4.1) formed in the foundation (4).
  • an anchoring piece (1.2) where the hollow drum (1.1) is adapted for fitting onto the outside of the lower end (2.1) of the pole (2), such that in use, the second end (1.12) of the hollow drum (1.1) which is fixed to the lower end (2.1) of the pole (2) is
  • the first end (1.11) of the hollow drum (1.1) of the connecting device (1) is likewise fixed to the foundation (4) by means of the anchoring piece (1.2), where in this case the hollow drum (1.1) is adapted for fitting onto the inside or onto the outside (not shown in Figure 4 ) of the lower end (2.1) of the pole (2), such that in use, the second end (1.12) of the hollow drum (1.1) which is fixed to the lower end (2.1) of the pole (2) is arranged above (at a greater height than) the first end (1.11) of the hollow drum (1.1) which is fixed to the foundation (4) through the anchoring piece (1.2); for example, said anchoring piece (1.2) could likewise be a base plate which is fixed, preferably by welding, to said first end (1.11) of the hollow drum (1.1).
  • the anchoring piece (1.2) is preferably fixed to the foundation (4) through first fixing means (5), for example, anchor bolts (5.1), partially embedded in the foundation (4) on the upper surface (4.2) thereof, and respective washer and nut assemblies (5.2) adapted for being inserted and threaded respectively into said anchor bolts (5.1), after the latter traverse respective openings (1.21) formed in the anchoring piece (1.2).
  • first fixing means (5) for example, anchor bolts (5.1), partially embedded in the foundation (4) on the upper surface (4.2) thereof, and respective washer and nut assemblies (5.2) adapted for being inserted and threaded respectively into said anchor bolts (5.1), after the latter traverse respective openings (1.21) formed in the anchoring piece (1.2).
  • the upper surface (4.2) of the foundation (4) can be located on the surface of the terrain (6) or can be buried a certain depth from said surface.
  • the hollow drum (1.1) of the connecting device (1) is adapted for fitting onto the inside, as shown in Figure 10 , or onto the outside of the lower end (2.1) of the pole (2), such that in use, the second end (1.12) of the hollow drum (1.1) which is fixed to the lower end (2.1) of the pole (2) is arranged above (at a greater height) the first end (1.11) of the hollow drum (1.1) which is fixed directly to the foundation (4), i.e., without the use of an anchoring piece (1.2), as occurs in the embodiments described above.
  • the fixing of the first end (1.11) of the hollow drum (1.1) to the foundation (4) can be achieved if said first end (1.11) of the hollow drum (1.1) is embedded in the foundation (4) through the upper surface (4.2) thereof due to the formation and setting of said foundation (4) with the first end (1.11) of hollow drum (1.1) inserted therein.
  • said first end (1.11) of the hollow drum (1.1) may be provided with screws, pins, or a similar element (not shown in the figures) fixed thereto in a manner transverse to its longitudinal axis.
  • the second end (1.12) of the hollow drum (1.1) preferably comprises first openings (1.121) which match up with respective second openings (2.11) formed in the lower end (2.1) of the pole (2), where each first opening (1.121) and the corresponding second opening (2.11) are configured for being traversed by second fixing means (8) adapted for keeping said second end (1.12) of the hollow drum (1.1) fixed to the lower end (2.1) of the pole (2), for example by means of the screwed attachments (8.1) (screw and nut) shown in Figures 9a-9b .
  • the fixing of the second end (1.12) of the hollow drum (1.1) to the lower end (2.1) of the pole (2) could also be achieved by means of welding.
  • the hollow drum (1.1) comprises a central part (1.13) arranged between its first and second ends (1.11, 1.12), where said central part (1.13) in turn comprises a wall portion (7), weakened with respect to the ends (1.11, 1.12), which is configured for deforming in a controlled manner when for example a substantially perpendicular impact force (F), see Figures 3a-3c , acts on the pole (2), such that the lower end (2.1) of the pole (2) is suitable for being displaced upwards or raised, i.e., towards the road equipment (3) supported by the pole (2), and twisted in the direction of the impact force (F), the lower end (2.1) of the pole (2) remaining fixed to the second end (1.12) of the hollow drum (1.2).
  • F substantially perpendicular impact force
  • a first embodiment of the wall portion (7) formed in the central part (1.3) of the hollow drum (1.1) shown in Figure 5 preferably comprises a plurality of longitudinal notches (7.1), i.e., oriented in the same direction of the longitudinal axis of the hollow drum (1.1), formed and distributed along the perimeter in said wall portion (7).
  • “Notch” can be understood to mean a cut made, for example, by means of a die, without any loss of material.
  • the wall portion (7) may comprise a plurality of longitudinal slots (7.2), i.e., cuts involving a loss of material, oriented in the same direction of the longitudinal axis of the hollow drum (1.1), likewise formed and distributed along the perimeter in said wall portion (7).
  • the longitudinal slots (7.2) of the wall portion (7) are preferably formed on some or on all of the edges (1.131) of the central part (1.13) corresponding to the wall portion (7).
  • the wall portion (7) may comprise a plurality of transverse creases (7.3), i.e., extending in a direction perpendicular to the longitudinal axis of the hollow drum (1.1), formed along the perimeter in said wall portion (7), forming alternating "ridges” and “valleys", such as the shape of a "bellows” or “accordion”.
  • the wall portion (7) may comprise transverse notches or slots (7.4, 7.5) formed along the perimeter forming rows and columns in said wall portion (7).
  • the wall portion (7) may be formed by a wall thickness (e1) of the central part (1.13) of the hollow drum (1.1) less than a wall thickness (e2) of the first and second ends (1.11, 1.12) of said hollow drum (1.1).
  • the wall portion (7) may comprise a non-constant longitudinal section, which includes a segment of a cross-section (s1) of the central part (1.13) having smaller dimensions than a cross-section (s2) of the first and second ends (1.11, 1.12) of the hollow drum (1.1), for example, in the form of a "diabolo" or "hourglass".
  • the central part (1.13) of the hollow drum (1.1) is intended to be suitable for deforming with respect to the ends (1.11, 1.12) for being fixed to the foundation (4) and to the lower end (2.1) of the pole (2), respectively, such that in the case of a possible vehicle impact (not shown in the figures) against the pole (2), there is a controlled deformation of the wall portion (7) formed in said central part (1.13) of the hollow drum (1.1), absorbing part of the energy from said impact, and the collapsing movement of the pole (2) is in turn controlled by completely or partially raising its lower end (2.1) above the connecting device (1), such that the pole (2) loses rigidity of its lower end (2.1), in order to then twist it in the direction of the impact force (F) of the vehicle, without the pole (2) losing its link to the foundation (4), thereby contributing to progressively reducing the velocity of the vehicle and therefore, reducing damages to the occupants of said vehicle.
  • the pole (2) preferably comprises an upper end (2.2) adapted for being fixed directly or by means of an extension element (9) to at least one item of road equipment (3) selected from the group consisting of a lighting means (3.1), a sign panel (3.2), a traffic signal (3.3), and a support bracket (3.4) for overhead lines (3.41).
  • a pole (2) manufactured from a material or materials with an elastic limit within a certain predetermined range, such as known fusible or collapsible poles, upon losing rigidity at its lower end (2.1) as a result of the connecting device (1), the pole (2) is easily deformable by the vehicle impacting against it, such that said pole (2) deforms rapidly, with its contour crumpling up as if it were "snakeskin", said pole (2) being caused to collapse by the vehicle without putting up major resistance.
  • the combination of the controlled deformation of the wall portion (7) of the central part (1.13) of the hollow drum (1.1) of the connecting device (1) connecting the pole (2) to the foundation (4), and the subsequent also controlled deformation sustained by the walls of the pole (2) during their collapse, after the raising and twisting of its lower end (2.1), allows the absorption of energy from the impact to be improved and a smooth deceleration of the vehicle to be achieved, reducing the severity of the impact for the occupants of the vehicle.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Signs Or Road Markings (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
EP22382282.6A 2021-04-30 2022-03-28 Support structure for road equipment Active EP4083323B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES202130384A ES2927157B2 (es) 2021-04-30 2021-04-30 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

Publications (2)

Publication Number Publication Date
EP4083323A1 EP4083323A1 (en) 2022-11-02
EP4083323B1 true EP4083323B1 (en) 2024-04-24

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ID=80979031

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EP22382282.6A Active EP4083323B1 (en) 2021-04-30 2022-03-28 Support structure for road equipment

Country Status (6)

Country Link
EP (1) EP4083323B1 (es)
CL (1) CL2023003197A1 (es)
CO (1) CO2023014724A2 (es)
CR (1) CR20230505A (es)
ES (1) ES2927157B2 (es)
WO (1) WO2022229481A1 (es)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616616U (es) * 1979-07-18 1981-02-13
DE8407824U1 (de) * 1984-03-14 1984-07-12 Hoeckle, Eberhard, 7000 Stuttgart Verkehrszeichentraeger
US5060437A (en) * 1988-03-08 1991-10-29 Shakespeare Company Breakaway utility pole
JPH0725020U (ja) * 1993-10-20 1995-05-12 ケイアンドケイ工業株式会社 屈曲可倒式標識
NO325255B1 (no) 2005-02-18 2008-03-10 Euromast As Stang, saerlig for bruk som vegmast.
BE1017649A7 (nl) 2007-06-15 2009-03-03 Safety Product Nv Verkeersveilige paal.
US20100277290A1 (en) * 2009-03-18 2010-11-04 Knudsen N Eric Post sleeve assembly
SE0901068A1 (sv) * 2009-08-10 2011-02-11 Arne Odehaag Böjbar stolpkrage
JP2014201954A (ja) * 2013-04-04 2014-10-27 Nok株式会社 視線誘導標識柱の固定構造及び視線誘導標識柱の固定部材
EP3143210B1 (en) 2014-03-14 2018-07-04 Safety Product Street pole
KR20200001445U (ko) * 2018-12-21 2020-07-01 임종대 볼라드

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Publication number Publication date
EP4083323A1 (en) 2022-11-02
ES2927157B2 (es) 2023-03-07
CO2023014724A2 (es) 2023-11-20
CL2023003197A1 (es) 2024-03-22
WO2022229481A1 (es) 2022-11-03
ES2927157A1 (es) 2022-11-02
CR20230505A (es) 2024-02-14

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