EP1325193A1 - Glissiere de securite - Google Patents

Glissiere de securite

Info

Publication number
EP1325193A1
EP1325193A1 EP01970475A EP01970475A EP1325193A1 EP 1325193 A1 EP1325193 A1 EP 1325193A1 EP 01970475 A EP01970475 A EP 01970475A EP 01970475 A EP01970475 A EP 01970475A EP 1325193 A1 EP1325193 A1 EP 1325193A1
Authority
EP
European Patent Office
Prior art keywords
crash barrier
profile girder
posts
profile
members
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.)
Withdrawn
Application number
EP01970475A
Other languages
German (de)
English (en)
Inventor
Anders Welandson
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.)
Varmforzinking AB
Original Assignee
Varmforzinking AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Varmforzinking AB filed Critical Varmforzinking AB
Publication of EP1325193A1 publication Critical patent/EP1325193A1/fr
Withdrawn legal-status Critical Current

Links

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
    • E01F15/0407—Metal rails
    • E01F15/0423—Details of rails

Definitions

  • the present invention relates to a crash barrier comprising a number of posts secured in the ground and a hollow profile girder connected to them and having a longitudinal, downwardly directed opening, upper end portions of the posts extending up thorough the opening to the interior of the profile girder and being connected thereto by means of connection members.
  • the crash barriers will be asymmetric inasmuch as a deflector girder is placed on the side of posts supporting the deflector girder.
  • Such a construction functions satisfactorily with the above-mentioned placing of the crash barrier, but cannot be employed if the crash barrier is to be placed between two adjacent carriageways with counterflowing traffic. In such a situation, two separate crash barriers will be needed with the "rear side" facing one another.
  • wire crash barriers consist of a number of posts at whose upper end regions are secured a number of wires which are placed superjacent one another approximately parallel with the ground. Principally for reasons of cost, such wire crash barriers have become increasingly common, both placing between adjacent carriageways or traffic lanes with counterflowing traffic and between a carriageway and the surrounding terrain.
  • wire crash barriers may function well in the event of a collision with motor cars and other vehicles where the passengers and driver sit protected. If, on the other hand, such wire crash barriers are in collision with an unprotected road user, for example a motorcyclist, they are extremely hazardous because, on the one hand, of the slight dimensions of the wires and, on the other hand, because of sharp and projecting end regions and side edges of the posts employed. Wire crash barriers have even been banned in certain countries because of such risks.
  • the present invention has for its object to design the crash barrier intimated by way of introduction such that it will be suitable for placing between adjacent carriageways or traffic lanes with counterflowing traffic.
  • the present invention also has for its object to realise a connection between an upper profile girder included in the crash barrier and posts supporting it which is such that the crash barrier outwardly presents uniform, smooth surfaces without sharp and projecting portions which might possibly injure an unprotected road user.
  • the present invention has for its object to design the crash barrier such that an upper profile girder included therein affords a gentle retardation and arrest without recoil of a colliding vehicle.
  • the present invention has for its object to realise a crash barrier which in an improvement on prior art designs and constructions both as regards cost and aesthetic properties.
  • the crash barrier is characterised in that the connections between the posts and the profile girder are disposed to break within a collision area in the event of a collision against the crash barrier.
  • crash barrier is also given one or more of the characterising features as set forth in appended Claims 2 to 20.
  • FIG. 1 is an end elevation of a crash barrier designed according to the present invention
  • Fig. 2 shows the crash barrier of Fig. 1 seen from beneath
  • Fig. 3 shows an end elevation of a section of a crash barrier in the region of a joint between two adjacent sections
  • Fig. 4 shows, in a view corresponding to that of Fig. 1, an alternative embodiment of the present invention
  • Fig. 5 shows, in a view corresponding to that of Fig. 2, the embodiment according to Fig. 4;
  • Fig. 6 shows, in a view corresponding to that of Fig. 1, a modified embodiment of the present invention
  • Fig. 7 shows a catch member included in the embodiment according to Fig.
  • Fig. 8 shows a support member included in the embodiment according to
  • the crash barrier includes a top bar or profile girder 1 which is supported by a number of posts 2 of which one is intimated in the Figure.
  • the profile girder has an outwardly convex, gently arched or rounded cross section which is of greater width in the horizontal direction than applies to its height in the vertical direction.
  • the post 2 connects to the profile girder from beneath and is connected to the profile girder in the central region thereof seen in the width direction of the profile girder.
  • the profile girder will, in the width direction, laterally extend outside the posts 2, whereby the crash barrier will be particularly suitable for placing between two adjacent carriageways or traffic lanes.
  • the cross section of the profile girder 1 has a circumscribed contour line which follows the outer surface of the profile girder.
  • the profile girder has a longitudinal opening 3.
  • the circumscribed contour line is to be considered as a "natural" extension of the contour lines on either side of the opening 3, so that these extended contour lines meet without discontinuities in the region of the opening 3.
  • the profile girder 1 is of the width in the horizontal direction which is approximately twice as great as the extent of the post 2 in the same direction, but may possibly be somewhat wider. Further, the width of the profile girder is of the order of magnitude of 1.5 to 1.7 times greater than its height. Finally, its cross sectional configuration is hollow and oval or approximately elliptical and it has a smooth outside without marked projections, folds or other irregularities.
  • the profile girder 1 has (in the position of use) on its underside a longitudinal opening 3 (see Figs. 2 and 3) through which upper end portions 4 of the posts 2 supporting the profile girder 1 extend up to the interior of the profile girder 1.
  • the opening 3 is laterally defined by flanges 7 and 8, respectively, which are disposed along the opposing edges 5 and 6 of the opening 3 and which extend up to the interior of the profile girder.
  • the flanges are planar and are approximately parallel with one another and with a longitudinal central vertical plane in the assembled state of the crash barrier.
  • the two flanges 7 and 8 extend upwardly approximately to half of the vertical extent of the profile girder 1, or possibly somewhat more.
  • the flanges 7 and 8 merge into lower surfaces of the profile girder, these lower surfaces extending laterally out from the opening 3.
  • upper and lower edge portions of the flanges 7 and 8, as well as the lower surfaces of the profile girder 1, serve the function of engagement portions for the connection members by means of which the posts 2 are connected to the profile girder.
  • These connection members are at least partly, and in one embodiment to a substantial degree, placed inside the circumscribed contour line of the profile girder.
  • the posts 2 display per se conventional cross sectional configuration with two parallel, opposing side surfaces 9 and 10 which between them have a web 11 which is largely V-shaped in cross section. As a result, the post 2 will have a cross sectional configuration which is reminiscent of a W or an ⁇ .
  • the side edges 10 and 9 of the post On the opposite side of the web 11, the side edges 10 and 9 of the post have flanges 12 and 13, respectively, which are bent inwardly towards one another so that the interior of the profile of the post will thereby be accessible through an opening 14 lying between the flanges 12 and 13.
  • a crash barrier according to the present invention consists of a plurality of profile girders 1 joined together in a long sequence after each other and all of which, at least apart from the end regions of the crash barrier, have the same cross sectional configuration.
  • a joint profile 15 is inserted interiorly in the profile girder, and has a cross section which is substantially identical to the cross section of the profile girder 1.
  • the joint profile 15 is dimensioned in such a manner that it may be slid, more or less without clearance, into end regions of mutually meeting profile girders 1.
  • the joint profile 15 also has inwardly directed flanges 16 and 17 which, on joining of adjacent profile girders, abut against the outsides of the flanges 8 and 7, respectively, of the profile girders.
  • the profile girder 1 In terms of mechanical strength, the profile girder 1 is dimensioned to be able to be deformed to a considerable extent and also undergo major changes in cross sectional configuration in the event of a collision. On the other hand, it is important that the profile girder is not wrenched off or joints between adjacent profile girders are broken so that the profile girders have free ends.
  • longitudinal strip irons or plate profiles 18 which abut against the sides of the two flanges 16 and 17 of the joint profile 15 facing away from one another.
  • the plate profiles 18 are of a material thickness which is considerably greater than the material thickness in both the profile girder 1 and in the joint profile 15 and, as a result, may make a major contribution to mechanical strength, in particular tensile strength, in the joint region between two adjacent profile girders 1.
  • the plate profile 18 is of a length so as to extend on both sides of the joint between the ends of adjacent profile girders 1 and has, along its longitudinal extent, a hole pattern in which bolts 19 are inserted which also extend through corresponding openings in the mutually abutting flanges 7 and 17, and 8 and 16, respectively, on the profile girders 1 and joint profile 15. It will be clearly apparent from Fig. 3 that the heads of the bolts 19 are located in the longitudinal opening 3 in the profile girder 1, for which reason they are located inside the circumscribed outer contour of the profile girder. Further, the heads of the bolts are conveniently accessible via the longitudinal opening 3. It will finally be apparent that the plate profiles have, in their openings, threads for accommodating and tightening the bolts 19. It will be apparent from the foregoing that the joint between two adjacent profile girders is disposed in its entirety interiorly in the profile girder.
  • connection members which interconnect the posts and the profile girders have thus substantially the same material thickness as both the posts 2 and the profile girders 1.
  • connection members include lower support members 21 which, from beneath, abut against the underside of the profile girder 1 on either side of the longitudinal opening 3. As a result, they will co-operate with lower engagement portions along opposing edge portions 5 and 6 of the opening 3 or at or on lower edge portions of the flanges 7 and 8.
  • the support members 21 extend from the opposing edges 5 and 6 of the opening 3 away from the opening 3 and connect with their upper surfaces to the downwardly directed edge portions of the profile girder adjacent its opening 3.
  • the support members 21 are in the form of flaps or projections which, in the longitudinal direction of the profile girder, have a slight, limited length which is clearly apparent from Fig. 2.
  • the length extent of the support members in the longitudinal direction of the profile girder is only approximately twice as great as their projection away from the opening 3, i.e. of the order of magnitude of a few centimetres.
  • connection members further include catch members 22 which engage with the profile girder 1 interiorly therein and, more precisely, with the upper edge regions of the two flanges 7 and 8, i.e. with upper engagement portions on the profile girder 1.
  • the catch members 22 are also of extremely limited extent in the longitudinal direction of the profile girder 1, which is also apparent from Fig. 2. More precisely, the longitudinal extent of the catch members 22 in the longitudinal direction of the profile girder is of the same order of magnitude as the extent of the support members 21 in the same direction.
  • the catch members 22 are disposed at the upper ends of upwardly directed flat profiles or sheet strips 23 which are located between each respective flange 7 and 8 and adjacent sides 9 and 10, respectively, on the post 2. Both the support members 21 and the rods 23 extend downwards a distance under the underside of the profile girder 1 along the opposing side edges 9 and 10 of the post 2. Immediately beneath the profile girder, there is provided a screw union 24 which extends through both the support members 21 and the rods 23. It will be clearly apparent from Fig. 2 that the nuts of the screw union 24 are easily accessible interiorly in the open profile which forms the post 2. In order to prevent the support members 21 from rotating about the screw unions, opposing and lower regions of them have flanges 25 directed towards the post 2 and surrounding lower portions of the rods 23.
  • the holes provided for the screw unions 24 in the side surfaces 9 and 10 of the posts are slightly oblong in the vertical direction.
  • the barrier may yield without permitting the colliding vehicle to pass through the crash barrier and possibly enter a counterflowing carriageway or traffic lane.
  • the deformation must not be so great that it runs the risk of jeopardising the safety of traffic in a counterflowing carriageway or traffic lane.
  • an absorption will be effected of the energy of the colliding vehicle so that this is retarded and arrested in a more or less gentle manner.
  • a yieldable crash barrier according to the present invention also entails that the risk that a colliding vehicle uncontrollably recoils out from the crash barrier after a collision is reduced to a considerable degree.
  • the energy absorption on a collision takes place among other things in two different ways, partly by bending of the profile girder in its entirety and partly by deformation or compression of its cross sectional configuration.
  • the longitudinal opening 3 located at the bottom is important, since it permits the above-mentioned deformations without weakening the profile girder against tensile, propelling forces.
  • the catch members 22, the rods 23 and the support members 21 be considered as relatively easily deformable, which also applies to the upper edge regions of the upwardly directed flanges 7 and 8 of the profile girder.
  • the deformations are principally to occur so that the profile girder 1 may possibly be released from the posts 2 in the event of a collision and gently retard the colliding vehicle without this running the risk of passing through the profile girder because of a breakage in it or in a joint between adjacent sections of it.
  • connection members by means of which the profile girder 1 is secured to the posts 2 have a slightly different detailed design.
  • the support members 21 at a post 2 are mutually interconnected via a substantially horizontal intermediate section 26.
  • the intermediate section extends horizontally out from a plate 27 which abuts against and is complementary to the web section 11 of the post 2.
  • the plate is vertically adjustably secured in the post by means of a screw union 28 and a vertically extending and elongate opening 29 provided in the web 11.
  • the catch members 22 at a post 2 are also mutually interconnected by the intermediary of a substantially horizontal clamping member 30 which, via a clamping element in the form of a screw union 31, may be brought into abutment against the intermediate section 26 in the vertical direction.
  • the catch members 22 and then support members 21 will between them clamp upper and lower engagement portions of the profile girder 1.
  • the connection members are, for the greater part, placed inside the circumscribed outer contour line of the profile girder 1.
  • Figs. 6-8 show a further modified embodiment of the present invention.
  • the profile girder 1 is of a cross sectional configuration which is more pronounced of a parallelogram or a rhomboid with gently rounded "corner portions". The surfaces between them are largely planar.
  • the projection of the profile girder laterally on both sides of the post 2 is greater than that which applies in the above-described embodiments, so that the profile girder, in this embodiment, is approx. 2-2.5 times wider than the post.
  • the two upwardly directed flanges 7 and 8 are considerably longer than is the case in the above-described embodiments.
  • connection members for interconnecting the upper portions 4 of the posts 2 with the profile girder 1 include, also in this embodiment, support members 21 which abut against the outside of the profile girder immediately adjacent both edges 5 and 6 of the opening 3, i.e. in the regions of the lower edges of the flanges 7 and 8.
  • the support members 21 have a bending angle between the shank facing towards the post 2 and the shank facing towards the underside of the profile girder 1, the bending angle being slightly more obtuse than the angle between the side surface 9 or 10 of the post and the underside of the profile girder adjacent the opening 3. This implies that, when the bolt 24 is tightened, the support member 21 will be bent to a slightly more acute angle, for which reason it will abut with a certain spring tension against the underside of the profile girder. This deformation of the support member 21 is also facilitated by the fact that it lacks the two flanges 25 which are illustrated in Fig. 2.
  • the rod 23 which is connected to the post 2 in the same manner as described above.
  • the rod has, at opposing vertical edges, two angled, vertical portions 34 whose plane of extent is approximately at right angles to the plane of extent of the rod 23 and which have downwardly directed projections 35 whose lower end surfaces 36 abut against the inside of the profile girder 1 immediately at the opposing edges 5 and 6 of the opening 3, i.e. in the regions of the lower edges of the flanges 7 and 8.
  • the accommodation spaces 37 are shallower so that engagement occurs between the upper edges of the flanges 7 and 8. Regardless of how the engagement with the profile girder 1 takes place, the angled portions 34 are constructed so as to give way in the event of a collision against the crash barrier.
  • the lower ends of the rods 23 are connected to the post 2 and the support members 21 by means of bolts 24.
  • the openings in the rods 23 through which the bolts 24 extend are open and are in communication with the periphery of the rods 23 by the intermediary of grooves 38 which, at their ends discharging in the bolt opening, are narrower than the diameter of the bolt 24 and which, in the event of a collision against the crash barrier, facilitate the release of the rods from the posts 2.
  • profile girder 1 has been shown as having an oval or possibly elliptical cross section, it is possible to design the profile girder with other cross sections, for example circular cross section, a recumbent rectangular cross section where the vertical, opposing side edges are gently arched while the upper side may be substantially planar. Further, the cross section of the profile girder is suitably symmetrical about a longitudinal centre vertical plane.
  • the profile girder 1 it is also possible to design the profile girder 1 to be asymmetric in that the elongate opening is offset laterally in one direction so that the projection of the profile girder laterally outside the posts 2 will be greater in one direction.
  • Such an embodiment is best suited for placing between a carriageway and the surrounding terrain.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

L'invention concerne une glissière de sécurité comprenant une poutre supérieure profilée (1), présentant une section transversale creuse, approximativement ovale, et une ouverture longitudinale sur la face inférieure. Un certain nombre de poteaux (2) fixés au sol s'étendent, au niveau de leur extrémité supérieure (4), vers le haut à travers l'ouverture. Le long des bords opposés (5 et 6) de l'ouverture, la poutre profilée (1) présente des membrures dirigées vers le haut (7 et 8, respectivement). Des éléments d'ancrage, reliant les poteaux (2) à la poutre profilée (1), comprennent des éléments de support (21), qui viennent buter contre la face inférieure de la poutre profilée (1) au niveau des bords (5 et 6) de l'ouverture, et des éléments d'arrêt (22, 23 et 34), qui viennent en prise sur les bords supérieurs des membrures (7 et 8) ou sur l'intérieur de la poutre profilée (1) au niveau des bords (5 et 6) de l'ouverture. La relation entre les éléments d'ancrage et la poutre profilée (1) est conçue pour céder en cas de collision, tandis que des liaisons entre des sections adjacentes de la poutre profilée sont conçues pour résister à une telle collision.
EP01970475A 2000-09-28 2001-09-28 Glissiere de securite Withdrawn EP1325193A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0003486A SE522308C2 (sv) 2000-09-28 2000-09-28 Vägräcke
SE0003486 2000-09-28
PCT/SE2001/002086 WO2002027104A1 (fr) 2000-09-28 2001-09-28 Glissiere de securite

Publications (1)

Publication Number Publication Date
EP1325193A1 true EP1325193A1 (fr) 2003-07-09

Family

ID=20281209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01970475A Withdrawn EP1325193A1 (fr) 2000-09-28 2001-09-28 Glissiere de securite

Country Status (4)

Country Link
EP (1) EP1325193A1 (fr)
AU (1) AU2001290475A1 (fr)
SE (1) SE522308C2 (fr)
WO (1) WO2002027104A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE528049C2 (sv) * 2004-07-02 2006-08-22 Varmfoerzinkning Ab Vägräcke
SE533153C2 (sv) * 2008-05-30 2010-07-06 Varmfoerzinkning Ab Vägräcke
PL3277886T3 (pl) 2015-04-02 2020-11-16 Arcelormittal Przekładka do drogowej bariery ochronnej

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE312571B (fr) * 1964-04-09 1969-07-21 R Mogensen
US3822863A (en) * 1971-06-16 1974-07-09 Magno De Prod Inc Aluminum barrier support post
FR2341704A1 (fr) * 1976-02-23 1977-09-16 Routier Equip Sa Perfectionnements aux glissieres de securite pour voies de circulation routiere
BG30024A3 (en) * 1977-08-17 1981-03-16 Ut-, Vasuttervezo Vallalat Reflecting apparatus, especially for roads
SE511024C2 (sv) * 1997-03-26 1999-07-26 Blue Systems Ab Vägräcke
FR2779162A1 (fr) * 1998-05-27 1999-12-03 Georges Joseph Michel Guerin Manchon de protection pour poteaux de glissieres metalliques de securite routiere

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0227104A1 *

Also Published As

Publication number Publication date
WO2002027104A1 (fr) 2002-04-04
SE0003486L (sv) 2002-03-29
AU2001290475A1 (en) 2002-04-08
SE522308C2 (sv) 2004-02-03
SE0003486D0 (sv) 2000-09-28

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