EP2514876A1 - Sicherheitsbarriere und Pfosten für eine Sicherheitsbarriere - Google Patents

Sicherheitsbarriere und Pfosten für eine Sicherheitsbarriere Download PDF

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Publication number
EP2514876A1
EP2514876A1 EP12003229A EP12003229A EP2514876A1 EP 2514876 A1 EP2514876 A1 EP 2514876A1 EP 12003229 A EP12003229 A EP 12003229A EP 12003229 A EP12003229 A EP 12003229A EP 2514876 A1 EP2514876 A1 EP 2514876A1
Authority
EP
European Patent Office
Prior art keywords
post
safety fence
rail
bracket
base plate
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Withdrawn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
EP12003229A
Other languages
English (en)
French (fr)
Inventor
Steven Charles Sirman
Andrew Thomas Blowey
Trevor Raymond Mustard
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.)
Tata Steel UK Ltd
Original Assignee
Tata Steel UK Ltd
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 Tata Steel UK Ltd filed Critical Tata Steel UK Ltd
Priority to EP12003229A priority Critical patent/EP2514876A1/de
Publication of EP2514876A1 publication Critical patent/EP2514876A1/de
Priority to PCT/EP2013/001313 priority patent/WO2013164097A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0407—Metal rails
    • E01F15/0423—Details of rails
    • E01F15/043—Details of rails with multiple superimposed members; Rails provided with skirts
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
    • E01D19/103—Parapets, railings ; Guard barriers or road-bridges
    • 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
    • E01F15/0461—Supports, e.g. posts

Definitions

  • the invention relates to a safety fence and post for a safety fence, more in particular a highway safety fence and post for safety fence which in combination provide a high containment level.
  • the general term safety fence includes parapet and associated post for use on bridges and like structures.
  • safety fence and “parapet” are used interchangeably in the description unless specifically restricted to one of these terms.
  • the new safety fence should preferably be designed such that the mounting points of the previous safety fence can be used without having to make additional mounting points. Another important point is, especially near constructions like for instance support towers, that the deflection of the safety fence with a vehicle crashing into the safety fence stays within certain limits. Moreover, the new safety fence should preferably not have an increased wind loading compared to that of the old safety fence.
  • one or more of the objectives of the invention are realized by providing a safety fence comprising posts and one or more rails attached to the posts, wherein the top of one or more of the posts is provided with a chamfer and wherein the chamfer runs in downward direction away from the rails as seen with safety fence and posts in situ.
  • the safety fence according to the invention is designed to comply with the H4a containment level, a UK standard that corresponds to European EN1317 Test TB71 requirements. This implies that the safety fence should be capable of absorbing the load of a 30 ton heavy goods vehicle crashing into the safety fence at a speed of 65km/h. With such a crash the safety fence will deflect from the original position which might easily result in that part of the safety fence and more in particular a number of posts will deflect beyond the deflection limit that is required for particular applications.
  • the invention is based on the insight that with this measure a safety fence can be realized that not only fulfils this specific requirement of staying within the deflection limit associated with a certain containment level but that at the same time a safety fence can be provided that it is capable of sufficiently absorbing the crash energy. This last feature is important because otherwise a vehicle crashing into the safety fence could bounce directly off to the road and into traffic which could result in even more damage and personal injuries.
  • the top of the post for the safety fence is chamfered at an angle between 30° - 60°, more preferably at an angle between 40° - 50°.
  • Such a chamfer is very effective since it could result in a deflection that is considerably less and may even result in a deflection that is up to 15% less than would be the case with a safety fence without such chamfer. As a result there is more room to better adapt the safety fence to absorb the load of a crash.
  • At least one of the rails connects to a post for the safety fence by means of a bracket designed to absorb at least part of the load of a vehicle crashing into the safety fence.
  • the bracket at opposite ends is respectively fastened to post and rail and wherein the bracket has a bend.
  • Such a bend includes a smoothly curved part as well as a part with a sharp bend or kink. With such a bracket it is possible to tune the bracket to a certain crash load.
  • the bracket has two parts running from post to the rail, which parts are bent in opposite direction, preferably in a direction away from each other. By bending the parts in a direction away from each other these parts are not likely to butt against each other with deformation of the bracket and therewith change the deformation characteristics of the bracket. A bracket with two such bent parts can be fine tuned easier and with greater reliability.
  • the bracket has two parallel sides which are respectively fastened to the post and the rail and which connect to the bent connecting parts.
  • a rectangular section can be used to make such a bracket by bending two opposite sides in outward direction while the other two opposite sides are used to fasten the bracket to respectively post and rail.
  • the post for the safety fence comprises a U-section or a hollow section, wherein the hollow section could be a round hollow section or a rectangular hollow section, including a square hollow section. Because of sturdiness the hollow sections are preferred.
  • the post for the safety fence is fastened to a base plate at a position offset from the centre line of the base plate that runs parallel to the length direction of the rail with the largest part of the base plate at the side of the one or more rails.
  • the base plate is secured to the substrate, for instance bolted to a concrete substrate, and the post is for instance welded to the base plate.
  • the rail that is fastened to the bracket extends in a direction perpendicular to the length direction of the rail to beyond the base plate.
  • the parapet post is fixed to a substrate that in most cases will be of a different material from the substrate of the road itself, for instance concrete versus hot-rolled asphalt, which may extend above the level of the surface of the road.
  • the rail extends to beyond the base plate and preferably up to or beyond the transition between the substrate of the post for the safety fence and the surface of the road if these are at different levels.
  • a rail is provided at the top of the post which has a maximum extension in a direction perpendicular to the length direction of the rail that does not extend beyond the bracket seen in vertical direction.
  • This rail is fastened against the post without a bracket since the impact of smaller vehicles crashing into the parapet will be below this level of the post. It has proven that with the chamfer of the top of the post as explained above that the strength of the post at this level is not affected or hardly not affected.
  • a third rail is provided between the rail fastened to the bracket and the rail at the top of the post which has a maximum extension in a direction perpendicular to the length direction of the rail that does not extend beyond the bracket seen in vertical direction.
  • the dimension of the third rail seen in vertical direction is less than the dimension in horizontal direction. This will result in that the safety fence or parapet will be less susceptible to wind load.
  • the invention further includes a post for a safety fence or parapet with one or more rails comprising a U-section or a hollow section fastened to a base plate, wherein the top of the post is provided with a chamfer and wherein the chamfer runs in downward direction away from the side to which one or more rails are to be fastened.
  • the top of the post is chamfered at an angle between 30° - 60°, more preferably at an angle between 40° - 50°.
  • the post is fastened to a base plate at a position off centre of the base plate with the largest extension of the base plate at the side of the post facing away from the chamfered part of the post.
  • a safety fence or parapet 1 is shown with posts 2, a lower rail 3, a top rail 4 and an intermediate rail 5.
  • the posts 2 are fixed to a base plate 6 which in turn is fixed to the substrate, for instance a concrete substrate of a bridge.
  • the rails 3, 4 and 5 are put together from length units that are connected by joints 7, preferably bolted joints. The length units of rail and the distance between the posts are taken such that the joints 7 are always at a distance from the posts 2 in order to prevent that the joints 7 coincide with the fastening points between the rails and the posts 2.
  • Fig.2 shows a section through safety fence1 with post 2, rails 3, 4, 5, base plate 6, substrate 8 for base plate 6 and part of the road 9 adjacent substrate 8.
  • the lower most rail 3 is fastened to a bracket 10 which in its turn is fastened to post 2.
  • the rail 3 has a rectangular shape in cross section with the longest sides running in vertical direction.
  • the side of rail 3 facing away from the post 2 extends beyond base plate 6 and in this example also lies just beyond the boundary between substrate 8 for base plate 6 and the road 9.
  • said outer side of rail 3 could be situated even further beyond said boundary between substrate 8 for base plate 6 and the road that is preferably avoided because it would mean unnecessary use of space.
  • the base plate 6 is fastened by means of bolts 11 to substrate 8.
  • top rail 4 and the intermediate rail 5 extend over the same length in horizontal direction perpendicular to the length of the rail, which is less than the length of bracket 10 in that direction. This leaves enough space for deformation of bracket 10 before a vehicle crashing into the safety fence or parapet also hits the other rails 4, 5.
  • top post 2 has a chamfer 12 at an angle between 30° - 60° with the side to the which the rails 3, 4, 5 are fastened. In the figure the angle is about 45°.
  • the top rail 4 is fastened to the chamfered top part of post 2 that does not weaken the construction of the parapet at this point as the majority of the load sustained by the post is at its base.
  • the height of post 2 in the figure is about 1.50m, the post is made from a 18x18cm hollow section and the chamfer has an angle of about 45°. This means that the total deflection of a post bend because of a vehicle crashing into the safety fence or parapet is considerably less than with a post without chamfer. For example a 1.50m tall post leaning over to 45° would result in approximately a 125mm reduction in deflection from 1060mm to 935mm.
  • Fig.3 shows a section through bottom rail 3, bracket 10 and post 2.
  • Bracket 10 is bolted at opposite sides 13, 14 to respectively post 2 and rail 3.
  • Opposite sides 15, 16 of bracket 10 have a bend resulting in that the sides 13, 14 and the straight parts of bent sides 15, 16 are at an angle of between 115° - 125°. In the present example the angle is somewhere in the range of 118° - 120°. With such an angle and both sides bent in outward direction the load of a crash can be absorbed in a controlled manner.
  • Fig.4 shows a section through rail 5 and post 2.
  • a mounting plate 17 is fastened to the post 2 for instance by welding mounting plate 17 to post 2.
  • the top rail 4 is fastened in the same manner to post 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
EP12003229A 2012-05-03 2012-05-03 Sicherheitsbarriere und Pfosten für eine Sicherheitsbarriere Withdrawn EP2514876A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12003229A EP2514876A1 (de) 2012-05-03 2012-05-03 Sicherheitsbarriere und Pfosten für eine Sicherheitsbarriere
PCT/EP2013/001313 WO2013164097A1 (en) 2012-05-03 2013-05-03 Safety fence and post for safety fence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12003229A EP2514876A1 (de) 2012-05-03 2012-05-03 Sicherheitsbarriere und Pfosten für eine Sicherheitsbarriere

Publications (1)

Publication Number Publication Date
EP2514876A1 true EP2514876A1 (de) 2012-10-24

Family

ID=46052530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12003229A Withdrawn EP2514876A1 (de) 2012-05-03 2012-05-03 Sicherheitsbarriere und Pfosten für eine Sicherheitsbarriere

Country Status (2)

Country Link
EP (1) EP2514876A1 (de)
WO (1) WO2013164097A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO338744B1 (no) * 2004-05-28 2016-10-17 Agensys Inc Monoklonale antistoffer og fremgangsmåte for fremstilling derav og anvendelse, samt hybridom, polynukleotid, peptid, vektor, celle og farmasøytisk sammensetning

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017102671A1 (en) * 2015-12-17 2017-06-22 Tata Steel Uk Limited Road barrier system, post and bracket for such a barrier system
CN105525564A (zh) * 2016-01-25 2016-04-27 衡水冀军工程技术有限公司 一种简支t梁用人行道支架

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733897A (en) * 1956-02-07 Diamond
CH416713A (fr) * 1965-01-27 1966-07-15 Clotura S A Palissade routière de sécurité
US5720470A (en) * 1996-03-27 1998-02-24 Kj Byggstal Ab Barrier
DE20210515U1 (de) * 2002-07-05 2002-09-05 Wohlfarth, Lothar, 74731 Walldürn Rammschutzprofil
EP1813726A1 (de) * 2006-06-26 2007-08-01 Corus UK LTD. Sicherheitssperre
EP1918460A1 (de) * 2006-10-31 2008-05-07 Hierros y Aplanaciones, S.A. (HIASA) Verbessertes Dämpfsystem für seitlichen Fahrzeugaufprall mit hoher Dämpfungs- und Energieabsorptionskapazität
ES2325670A1 (es) * 2006-10-11 2009-09-11 Ferrovial Agroman, S.A. Barrera de seguridad.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733897A (en) * 1956-02-07 Diamond
CH416713A (fr) * 1965-01-27 1966-07-15 Clotura S A Palissade routière de sécurité
US5720470A (en) * 1996-03-27 1998-02-24 Kj Byggstal Ab Barrier
DE20210515U1 (de) * 2002-07-05 2002-09-05 Wohlfarth, Lothar, 74731 Walldürn Rammschutzprofil
EP1813726A1 (de) * 2006-06-26 2007-08-01 Corus UK LTD. Sicherheitssperre
ES2325670A1 (es) * 2006-10-11 2009-09-11 Ferrovial Agroman, S.A. Barrera de seguridad.
EP1918460A1 (de) * 2006-10-31 2008-05-07 Hierros y Aplanaciones, S.A. (HIASA) Verbessertes Dämpfsystem für seitlichen Fahrzeugaufprall mit hoher Dämpfungs- und Energieabsorptionskapazität

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO338744B1 (no) * 2004-05-28 2016-10-17 Agensys Inc Monoklonale antistoffer og fremgangsmåte for fremstilling derav og anvendelse, samt hybridom, polynukleotid, peptid, vektor, celle og farmasøytisk sammensetning

Also Published As

Publication number Publication date
WO2013164097A1 (en) 2013-11-07

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