EP0137712A2 - Poteaux - Google Patents

Poteaux Download PDF

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Publication number
EP0137712A2
EP0137712A2 EP84306013A EP84306013A EP0137712A2 EP 0137712 A2 EP0137712 A2 EP 0137712A2 EP 84306013 A EP84306013 A EP 84306013A EP 84306013 A EP84306013 A EP 84306013A EP 0137712 A2 EP0137712 A2 EP 0137712A2
Authority
EP
European Patent Office
Prior art keywords
post
upper post
intermediate portion
anchorage
anchor
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Withdrawn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
EP84306013A
Other languages
German (de)
English (en)
Other versions
EP0137712A3 (fr
Inventor
John Noble Roskell
James Skitt
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.)
Jn Roskell Ltd
Original Assignee
Jn Roskell 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 Jn Roskell Ltd filed Critical Jn Roskell Ltd
Publication of EP0137712A2 publication Critical patent/EP0137712A2/fr
Publication of EP0137712A3 publication Critical patent/EP0137712A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E04H17/00—Fencing, e.g. fences, enclosures, corrals
    • E04H17/009—Footing elements for fence posts or fence sections
    • 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
    • E04H17/00—Fencing, e.g. fences, enclosures, corrals
    • E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
    • E04H17/20—Posts therefor
    • E04H17/21—Posts therefor with hollow cross sections

Definitions

  • the present invention relates to posts.
  • the post comprises a single elongate member, the lower portion of which is mounted in the ground and the remainder of which extends upwardly above the ground.
  • the fence post is broken or bent, such as occurs when excess bending moments or shear forces are applied to the post, -the complete post has to be replaced.
  • the replacement of a post is even more complicated, if not virtually impossible where the lower portion of the post is anchored in concrete.
  • a post includes a replaceable substantially rigid intermediate portion the lower end of which is removably received in an anchorage and an upper post portion the lower region of which is mounted on the intermediate portion, the post being such that when a sufficient force is applied to the upper post portion in a direction transverse to its elongate extent, the intermediate portion is arranged to permanently deform or break prior to the upper post portion permanently deforming or breaking.
  • the maximum bending moment occurs at the point where the post is no longer supported by, or held in the anchorage, i.e. at the point where the intermediate portion extends above the anchorage.
  • the intermediate portion will tend to bend or break prior to the anchorage or upper post portion being damaged to the point where they can no longer be used.
  • the intermediate portion only of the fence post requires to be replaced, and this can be quickly effected by removing the upper post portion from the intermediate portion, removing the intermediate portion from the anchorage and replacing the damaged intermediate portion with a new intermediate portion.
  • the post is extremely economical to repair.
  • the intermediate portion may require less of a shear force or bending moment than the upper post potion to permanently deform or break to help ensure that it is the intermediate portion which will fail and require replacement in preference to the upper post portion.
  • the upper post portion may be arranged to be spaced from the anchorage to allow the intermediate portion alone to take the maximum bending force.
  • the spacing of the upper post portion from the anchorage may be adjustable to allow the post to extend to different heights above the anchorage.
  • the adjustable mounting of the upper post portion on the intermediate portion may comprise a pin arranged to extend through the upper post portion and the intermediate portion, the pin passing through a selected one of a series of spaced holes provided on either the upper post portion or the intermediate portion.
  • the upper post portion and the intermediate portion may be of generally rectangular, square or circular cross-section which may allow them to be quickly and easily manufactured.
  • the intermediate portion may extend within the upper post portion.
  • the anchorage may include an anchor portion within which the intermediate portion is removably received.
  • the anchor portion may not require to be replaced when the intermediate portion is to be replaced to further reduce the time and labour required to replace a damaged intermediate portion.
  • the anchor member is embedded in concrete, the difficult job of breaking up the concrete and replacing it by a fresh mix does not have to be undertaken when a damaged intermediate portion is being replaced.
  • the intermediate portion may rest on a base of the anchorage.
  • the lower portion of the upper post portion may be hollow and may be capable of receiving the upper portion of the intermediate member, and the upper portion of the anchor member may also be hollow and capable of receiving the lower portion of the intermediate member.
  • the upper post portion may be a hollow elongate member of generally constant cross-section and the intermediate member may be a hollow elongate member of generally constant cross-section, as also may be the anchor portion.
  • the intermediate portion may be a close sliding fit within either the anchorage or the upper post portion, or both whereby the close sliding fit between the components allows the post to be generally stable with only a limited, if any, degree of relative movement being possible.
  • the anchor member 14, intermediate member 16 and upper post member 18 are all hollow metal members of generally square cross-section. In an alternative embodiment, not shown, any or all of the hollow members may be generally circular in cross-section.
  • the intermediate member 16 extends into both the anchor member 14 and the upper post member 18 and is a close sliding fit therewith to generally prevent rocking or movement of upper post member 18 relative to the anchor member in a direction transverse to the longitudinal axis of the post.
  • the intermediate member in fact extends along the whole length of the anchor member to rest on a base 20.
  • the base is part of the anchor member 14 and comprises a plate extending across and beyond the bottom of the anchor member. The intermediate member need not necessarily rest on the base. Withdrawal of the intermediate member from the anchor member is prevented by a removable grooved pin 22 extending through aligned holes formed in both the intermediate member and the anchor member.
  • the upper post member 18 is held above the ground by a removable grooved pin 24 extending through aligned holes in both the upper post member and the intermediate member.
  • the intermediate member is formed with a series of aligned holes 26 along a portion of its length and the height of the upper post member relative to the ground may be varied by inserting the pin through the selected pair of aligned holes 26.
  • the illustrated post is a fence post, but it will be appreciated that the present invention is not limited to fence posts and includes any post.
  • the upper post member 18 is formed with an angled section 28 at its upper end. Wires are usually connected between the angled section of adjacent fence posts in order to deter people from scaling the fence, wire fixing lugs may be provided in the upper post portion. It has been found that the bending moment created by people on the fence post when they try and climb, or push against the fence causes the fence post to bend or break. It will be appreciated that the maximum bending moment on the post appears at the base of the post.
  • the intermediate section will be subject to this maximum bending moment, and as the cross- sectional area of the metal of the intermediate member is less than the other components of the post, and as the moment of inertia of the intermediate member is also less about an axis transverse to the post, it is the intermediate member that will fail first. If the post is subjected to an undue shear force, for instance by a vehicle reversing into the post, again it is the intermediate member that tends to fail first. All of the components in the post may be of galvanised metal.
  • the pin 24 is removed from the upper post member and the intermediate member to allow the upper post member to be removed prior to removing the pin 22 from the anchor member to allow that part of the intermediate portion remaining to be removed.
  • a replacement intermediate member is then included into the post by inserting the pins 22 and 24 through the components of the post. It may even be possible to leave the fence attached to the upper post member 18 when replacing the intermediate member 14 merely by lifting the upper post member, replacing the damaged intermediate member, and lowering the upper post member.
  • the anchor member 14 may be placed into a correspondingly shaped recess formed in the ground 12 or, alternatively, where the ground comprises concrete, the concrete can be cast around the anchor member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
EP84306013A 1983-09-03 1984-09-03 Poteaux Withdrawn EP0137712A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838323660A GB8323660D0 (en) 1983-09-03 1983-09-03 Fence posts
GB8323660 1983-09-03

Publications (2)

Publication Number Publication Date
EP0137712A2 true EP0137712A2 (fr) 1985-04-17
EP0137712A3 EP0137712A3 (fr) 1985-06-05

Family

ID=10548285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84306013A Withdrawn EP0137712A3 (fr) 1983-09-03 1984-09-03 Poteaux

Country Status (2)

Country Link
EP (1) EP0137712A3 (fr)
GB (1) GB8323660D0 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146401A2 (fr) * 1983-12-20 1985-06-26 Geoffrey Lawson Norman Stratham Procédé et dispositif pour supporter des poteaux tubulaires
DE8715526U1 (fr) * 1987-11-24 1988-01-21 Stahlbau Goetz Kg, 6101 Brensbach, De
FR2841281A1 (fr) * 2002-06-25 2003-12-26 Rene Michel Verschuere Elements de cloture incluant des profiles en h et des equerres de positionnement
AU2011101435B4 (en) * 2007-11-30 2012-01-12 Mawsafe Products Pty Ltd Improvements to barrier fences
EP2520742A1 (fr) * 2011-05-04 2012-11-07 Maxilor Dispositif composé d'un poteau de cloture, constitué d'un profilé essentiellement tubulaire, et d'une embase au moins partiellement enterrée dans le sol
GB2508217A (en) * 2012-11-26 2014-05-28 Sayers Steel Fabrication Company Ltd Bent bollard assembly.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628296A (en) * 1969-09-02 1971-12-21 Unistrut Corp Breakaway sign support
DE2309249A1 (de) * 1973-02-24 1974-08-29 Kurt Konrad Gustav Karl Nagl Standsaeule mit verformungseinrichtung
US4346666A (en) * 1979-12-28 1982-08-31 Basaric Iso Console traffic direction post

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628296A (en) * 1969-09-02 1971-12-21 Unistrut Corp Breakaway sign support
DE2309249A1 (de) * 1973-02-24 1974-08-29 Kurt Konrad Gustav Karl Nagl Standsaeule mit verformungseinrichtung
US4346666A (en) * 1979-12-28 1982-08-31 Basaric Iso Console traffic direction post

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146401A2 (fr) * 1983-12-20 1985-06-26 Geoffrey Lawson Norman Stratham Procédé et dispositif pour supporter des poteaux tubulaires
EP0146401A3 (fr) * 1983-12-20 1986-04-16 Geoffrey Lawson Norman Stratham Procédé et dispositif pour supporter des poteaux tubulaires
DE8715526U1 (fr) * 1987-11-24 1988-01-21 Stahlbau Goetz Kg, 6101 Brensbach, De
FR2841281A1 (fr) * 2002-06-25 2003-12-26 Rene Michel Verschuere Elements de cloture incluant des profiles en h et des equerres de positionnement
EP1375784A1 (fr) * 2002-06-25 2004-01-02 René Michel Verschuere Eléments de clôture incluant des profilés en H et des équerres de positionnement
AU2011101435B4 (en) * 2007-11-30 2012-01-12 Mawsafe Products Pty Ltd Improvements to barrier fences
EP2520742A1 (fr) * 2011-05-04 2012-11-07 Maxilor Dispositif composé d'un poteau de cloture, constitué d'un profilé essentiellement tubulaire, et d'une embase au moins partiellement enterrée dans le sol
FR2974834A1 (fr) * 2011-05-04 2012-11-09 Maxilor Dispositif compose d'un poteau de cloture, constitue d'un profile essentiellement tubulaire, et d'une embase au moins partiellement enterree dans le sol
GB2508217A (en) * 2012-11-26 2014-05-28 Sayers Steel Fabrication Company Ltd Bent bollard assembly.

Also Published As

Publication number Publication date
GB8323660D0 (en) 1983-10-05
EP0137712A3 (fr) 1985-06-05

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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18D Application deemed to be withdrawn

Effective date: 19860206

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Inventor name: SKITT, JAMES

Inventor name: ROSKELL, JOHN NOBLE