EP1441071A2 - Leitschranke - Google Patents

Leitschranke Download PDF

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Publication number
EP1441071A2
EP1441071A2 EP04250233A EP04250233A EP1441071A2 EP 1441071 A2 EP1441071 A2 EP 1441071A2 EP 04250233 A EP04250233 A EP 04250233A EP 04250233 A EP04250233 A EP 04250233A EP 1441071 A2 EP1441071 A2 EP 1441071A2
Authority
EP
European Patent Office
Prior art keywords
uprights
parapet
rail
box section
rails
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Withdrawn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
EP04250233A
Other languages
English (en)
French (fr)
Other versions
EP1441071A3 (de
Inventor
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.)
Corus UK Ltd
Original Assignee
Corus 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
Priority claimed from GB0301759A external-priority patent/GB0301759D0/en
Priority claimed from GB0301758A external-priority patent/GB2397604B/en
Application filed by Corus UK Ltd filed Critical Corus UK Ltd
Publication of EP1441071A2 publication Critical patent/EP1441071A2/de
Publication of EP1441071A3 publication Critical patent/EP1441071A3/de
Withdrawn legal-status Critical Current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
    • E01F15/0407—Metal rails
    • E01F15/0423—Details of rails
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0407—Metal rails
    • E01F15/0438—Spacers between rails and posts, e.g. energy-absorbing means

Definitions

  • the present invention relates to a parapet. It has particular (but not exclusive) use alongside roads and other transport infrastructure links, for example at bridges or adjacent steep inclines.
  • Parapets generally consist of a plurality of uprights affixed to the bridge or roadside and to which are attached a plurality of rails running alongside the road. Some parapets are in the form of an upright wall of concrete or other suitable material. Rails can also be attached to such parapets to cushion an impact. A deviating vehicle that impacts the rails is then 'shepherded' along the road and prevented from leaving same. This will typically involve some deformation of the parapet structure, and the maximum permissible outward deflection is referred to as the working width.
  • the present invention seeks to provide an improved form of parapet. It addresses that part of the parapet that acts on the deviating vehicle, i.e. the rail.
  • the present invention therefore provides a parapet comprising a plurality of uprights affixable to a substrate and a plurality of rails supported by the uprights, each rail being formed from a plurality of lengths of substantially equiaxed box section affixed to the uprights at a point along their length and joined end to end at locations between uprights.
  • the rails are in the form of elongate lengths that are joined at their ends to the uprights.
  • each length traverses the distance between a pair of uprights.
  • This is extremely inflexible and means that the location of uprights is dictated by the parapet design and cannot be adjusted to local conditions. It also means that any error in the location of the uprights will result in a local weakening of the parapet.
  • a substantially equiaxed box section can be achieved by providing a box section with a cross-sectional aspect ratio less than 1.4. Particularly preferred aspect ratios are less than 1.2 and less than 1.1.
  • each side of the box section is between 60 and 90 millimetres.
  • Particular preferred sections are between 60 and 80mm, more preferably 65 to 75 millimetres.
  • the present invention provides a parapet comprising a plurality of uprights affixable to a substrate and at least one rail supported by the uprights, the rail being a substantially equiaxed box section, in which the external dimension of each side of the box section is between 60 and 90 millimetres.
  • this dimensional range is particularly preferable in terms of the performance of the parapet. It will be preferred that there are a plurality of rails, typically at least two or three, but this aspect of the invention is applicable to parapets containing any number of rails.
  • the substrate to which the uprights are affixable can be the edge of a bridge, or the edge of a roadway adjacent to a steep drop, or any suitable substrate adjacent a road.
  • the present invention provides a parapet comprising a plurality of uprights and at least one rail supported by the uprights, the uprights and rail being formed of steel and connected via bolts of stainless steel. It is preferred that the uprights and rails are galvanised.
  • a parapet generally designated as 10 comprises an array of uprights 12 of which two are shown. These are secured on mountings 14 to a substrate (not shown).
  • the substrate may be (for example) the edge of a bridge or a roadside verge adjacent a steep drop, or any location where it is important that cars do not leave the roadway.
  • Three rails 16a, 16b, 16c are attached to the uprights 12 in a generally parallel arrangement. It is comparatively normal for there to be between one and three rails although the invention is applicable to parapets having any number. As can be seen in Figure 1, all three rails have a join at 18a, 18b, 18c.
  • FIGS 2 - 6 show the join in more detail.
  • Each rail for example rail 16a, is not typically formed of a continuous length but is formed of a plurality of sub-lengths 20, 22.
  • These sub-lengths 20, 22 are each in the form of 80mm square 3.2mm thick steel first box sections, joined end-to-end at the join 18a.
  • a smaller size 70mm square 5mm thick second box section 24 is located inside the first box sections 20, 22.
  • the first sections 20, 22 almost abut and at their ends the second box section 24 extends into both otherwise free ends of the first box sections 20, 22.
  • the second box section 24 is then secured in place by six stainless steel M20x120mm bolts 26a-26f.
  • Three bolts, 26a, 26b and 26c pass through 25mm diameter apertures 28 in the first box section 20 and aligned 25mm apertures 30 in the second box section 24, whilst the remaining three bolts 26d, 26e and 26f pass through like apertures 32 in the remaining first box section 22 and aligned apertures 34 in the second box section 24.
  • the bolts are spaced at 75mm in each rail, the bolt closest the join being 60mm therefrom. All six bolts are secured using corresponding stainless steel nuts 36a - 36f and stainless steel washers as required.
  • stainless steel bolts provides corrosion protection. All other parts are hot dip galvanised, and stainless steel bolts do not then need to be touched up with a zinc coating.
  • Figures 7-11 show a second embodiment. This generally corresponds to the first and therefore like reference numerals are used where possible.
  • the second embodiment differs in that the apertures 30, 34 in the second box section 24 are elongate, their long axis being aligned with the length of the second box section 24.
  • a suitable oval is a 25mm diameter circle extended by 20mm, i.e. by about 80% of a diameter. This means that prior to tightening of the bolts 26a - f, there is a degree of latitude in the exact relative longitudinal position of the first box sections 20, 22.
  • the first will deform slightly so as to clamp the second box section in place and provide the necessary rigidity, whilst still allowing for expansion and contraction due to movement of the substrate.
  • the longitudinal adjustability allowed by this embodiment allows for minor tolerances in the precise length of the rail sections 20, 22 and the location of the uprights 12 to be corrected for.
  • the parapet will typically be several tens of meters long, it is not generally possible to predict in advance the precise length needed, at least to millimetre accuracy.
  • This invention shows distinct benefits as compared to existing designs, and solves problems inherent therein. It provides a standardised rail end detail, simplified fabrication, and tolerance provision.
  • the stainless steel bolts solve corrosion issue, and the entire structure is suited to manufacture in steel of J2 impact quality.
  • an equiaxed box section for the rail offers advantages in use.
  • the rail must exhibit a certain bulk strength in order to restrain a vehicle that would otherwise depart the roadway. This translates into a certain amount of material in the cross-section of the rail. It was apparent to us that the use of rails with a small vertical dimension and a large horizontal dimension, as has hitherto been the case, in effect gives the rail a cutting edge along which the vehicle slides. By making this edge more blunt, the rail can have less effect on the vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Steps, Ramps, And Handrails (AREA)
EP04250233A 2003-01-25 2004-01-17 Leitschranke Withdrawn EP1441071A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0301759A GB0301759D0 (en) 2003-01-25 2003-01-25 Parapet
GB0301758A GB2397604B (en) 2003-01-25 2003-01-25 Parapet
GB0301758 2003-01-25
GB0301759 2003-01-25

Publications (2)

Publication Number Publication Date
EP1441071A2 true EP1441071A2 (de) 2004-07-28
EP1441071A3 EP1441071A3 (de) 2005-03-02

Family

ID=31889689

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04250233A Withdrawn EP1441071A3 (de) 2003-01-25 2004-01-17 Leitschranke
EP04250234A Withdrawn EP1441072A3 (de) 2003-01-25 2004-01-17 Leitschranke

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP04250234A Withdrawn EP1441072A3 (de) 2003-01-25 2004-01-17 Leitschranke

Country Status (2)

Country Link
EP (2) EP1441071A3 (de)
GB (2) GB2423106A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054582A1 (en) * 2003-11-04 2005-06-16 Corus Uk Limited Traffic control barriers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2238199B1 (es) * 2005-04-07 2006-06-16 Hierros Y Aplanaciones, S.A. (Hiasa) Dispositivo separador deformable para barrera de seguridad carretera para impacto de vehiculos de los utilizados entre un elemento vertical de sujecion-soporte o poste y un elemento horizontal de impacto o baranda.
ES1308221Y (es) * 2024-02-28 2024-08-28 Tecnologia De Seguridad Vial Y Acustica Sl Dispositivo para juntas de dilatacion en pretiles metalicos para contencion de vehiculos

Family Cites Families (21)

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Publication number Priority date Publication date Assignee Title
GB1103370A (en) * 1966-12-08 1968-02-14 High Duty Alloys Ltd Improvements in or relating to methods of making posts, posts made thereby, and barriers employing such posts
GB1209191A (en) * 1967-03-15 1970-10-21 British Aluminium Co Ltd Improvements in or relating to railings
US3476362A (en) * 1968-09-30 1969-11-04 Bethlehem Steel Corp Highway barrier
FR1602125A (de) * 1968-10-29 1970-10-12
GB1299081A (en) * 1969-03-05 1972-12-06 Leonard Charles Pearson Improvements in and relating to crash barriers
GB1255724A (en) * 1969-06-18 1971-12-01 Davenport Ltd J Improvements in balustrades guide rails and like barriers
GB1375318A (de) * 1973-03-13 1974-11-27
NL7408997A (nl) * 1973-07-09 1975-01-13 Road Research Ltd Mechanische vangrail.
CH582817A5 (de) * 1974-05-02 1976-12-15 Densen Karl Thure
DE2425506A1 (de) * 1974-05-27 1975-12-11 Arbeitsgemeinschaft Metallbau Gelaender aus rostfreiem stahl
US4037788A (en) * 1975-12-03 1977-07-26 Riley Harry D Fence construction
FR2335132A7 (fr) * 1975-12-12 1977-07-08 Routier Equip Sa Perfectionnements aux entretoises d'espacement pour glissieres de securite
CA2047645A1 (en) * 1990-07-30 1992-01-31 Alton Brooks Parker Fence employing flat sided galvanized steel posts and channel parts
FR2678008B1 (fr) * 1991-06-20 1993-09-24 Routier Equip Sa Cale destinee a realiser le montage sur un poteau d'une glissiere de securite equipant une voie de circulation routiere.
IT229150Y1 (it) * 1992-04-14 1998-07-02 Stori Leopoldo Gasparetto Barriera metallica di sicurezza
GB9421390D0 (en) * 1994-10-24 1994-12-07 British Steel Plc Safety fences
DE9419943U1 (de) * 1994-12-13 1995-02-02 Glockner, Dieter, Ing.(grad.), 91126 Schwabach Geländer für Treppen, Brüstungen o.dgl.
SE507835C2 (sv) * 1996-03-27 1998-07-20 Bcc Ab Räcke särskilt för vägar och broar
JP2000144660A (ja) * 1998-11-10 2000-05-26 Nippon Steel Metal Prod Co Ltd 防護柵のビームパイプ取付け構造
WO2000060193A1 (en) * 1999-04-05 2000-10-12 Bridge Structures, Inc. Barrier device and method of providing a barrier
GB0105900D0 (en) * 2001-03-09 2001-04-25 Sealy Anthony R Fence post

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054582A1 (en) * 2003-11-04 2005-06-16 Corus Uk Limited Traffic control barriers

Also Published As

Publication number Publication date
GB0605422D0 (en) 2006-04-26
GB2423106A (en) 2006-08-16
EP1441072A3 (de) 2005-03-09
EP1441071A3 (de) 2005-03-02
GB2397605A (en) 2004-07-28
GB0401058D0 (en) 2004-02-18
EP1441072A2 (de) 2004-07-28

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