EP0735194A2 - Poteau de sécurité et son procédé de construction - Google Patents

Poteau de sécurité et son procédé de construction Download PDF

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Publication number
EP0735194A2
EP0735194A2 EP96660003A EP96660003A EP0735194A2 EP 0735194 A2 EP0735194 A2 EP 0735194A2 EP 96660003 A EP96660003 A EP 96660003A EP 96660003 A EP96660003 A EP 96660003A EP 0735194 A2 EP0735194 A2 EP 0735194A2
Authority
EP
European Patent Office
Prior art keywords
tube
post
safety
safety post
filling material
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Withdrawn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
EP96660003A
Other languages
German (de)
English (en)
Other versions
EP0735194A3 (fr
Inventor
Pertti Juhani Laurila
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0735194A2 publication Critical patent/EP0735194A2/fr
Publication of EP0735194A3 publication Critical patent/EP0735194A3/fr
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the target of this invention is a safety post defined in the introduction of claim 1 of this patent application.
  • Another target of this invention is the method for constructing the safety post as defined in claim 10 of this patent application.
  • Posts and poles such as reflector posts, traffic sign posts, lamp posts, traffic signal posts or sign posts used at roadsides in the vicinity of traffic are well-known.
  • This kind of a post or pole is usually made of metal or wood propped up in the ground.
  • the problem with these types of posts is that, in the vicinity of traffic they create a safety risk.
  • Metal tubes and wooden posts are rigid, and because of their stiff characteristics, even in a relatively mild collision the post causes damage to the vehicle, and possibly even to the driver or passengers.
  • Another problem is the high price of metal posts, and the maintenance costs, and poor durability of wooden posts. To improve durability, a wooden post must be pressure-impregnated, which poses an environmental problem, especially when it is time to discard and destroy the post.
  • a plastic tube would be a suitable raw material for a post, but in practice the flexibility of an economical model would be substantially lower than that of a metal tube, while a sufficiently strong, plain plastic tube, suitable for above mentioned purposes, would be far too expensive.
  • the US publication 4.078.867 describes a post which consists of a thin-walled, propped up plastic tube with the stiffness adjusted so that the tube bends very little when submitted to lateral force. The tube is filled with sand only to ground level which does not increase the bending resistance of the tube.
  • the purpose of this invention is to eliminate the above mentioned problems.
  • the purpose of this invention is to present a novel type of safety post which is safe in a collision and does not damage a vehicle colliding with the post.
  • the purpose of this invention is to present an inexpensive safety post which is simple to use, and easy to erect.
  • the purpose of this invention is to present a safety post which enables plastic or another low-priced and durable building material to be used.
  • the purpose of this invention is to present an economical and simple method for constructing a safety post.
  • the hollow interior of the safety post is filled with granular filling material extending upward from the prop-up site, so that the tube is, at least, partially, filled with the above mentioned filling material which is arranged in such a way that the safety post withstands loads in normal use, but in a collision, yields and/or breaks without causing damage to the vehicle colliding with the safety post.
  • Reflectors, traffic signs, traffic lights, lamps and other signals can be mounted onto the top of the tube.
  • the hollow interior of the tube is filled, at least partially, with granular material from the site of erection.
  • the filling material extends upwards from the ground prop-up site, and is arranged so that it improves the bending resistance of the tube; and as a result, the post withstands loads in normal use, but in a collision bends, yields and/or breaks without causing damage to the vehicle colliding with the safety post.
  • the advantage of this invention is that it improves traffic safety.
  • the safety post In the event of a collision the safety post is safe, because of the lighter structure.
  • the shell of the post bends, yields and/or breaks under the force of impact; it "explodes” and releases its inner packing into the surroundings, without producing an unnecessarily strong impact resistance and causing great damage.
  • the advantage of this invention is that it is more economical than currently used posts.
  • the raw material is inexpensive and the lightness of the tube and ease of erection make this invention cheap and easy to use.
  • economical thin-walled plastic tubes can be used as safety posts, because the filling material arranged inside the post renders the post sufficiently strong and rigid.
  • An additional advantage of this invention is that the tube can first be erected and, then filled with soil found at the erection site, or its close vicinity.
  • the volume weight of filling material is essentially the same order of magnitude as mineral soil.
  • the filling material may consist of stone chips, gravel, sand, fine sand, clay sand and/or clay. In some embodiments of this invention, the filling material may also consist of metal filings.
  • the tube is a thin-walled plastic, metal or ceramic tube.
  • the hollow interior of the tube is partially filled with filling material.
  • the filling material is mostly arranged at the prop-up site of the tube, i.e. at the area, where the tube is most likely to bend.
  • the top end of the post can be left hollow and light to reduce the bending stress while the prop-up site is multi-reinforced with filling material such as sand.
  • the bottom end of the post is directly dug into the ground.
  • the safety post may include a special post erection foot, to which the tube is mounted.
  • the tube consists of a stopper which blocks the bottom end of the post.
  • the tube may include a lid which covers the top end of the tube.
  • the post can be assembled from several, successive, joined tubes.
  • Figure 1 shows the safety post of this invention constructed as a traffic sign post.
  • the post consists of a vertical tube (1 ) with a hollow interior (2), propped up in the ground.
  • the tube (1) is a thin-walled plastic shell-structure, and its bending resistance is adjusted so that the tube bends, yields and/or breaks, when submitted even to minimal lateral force.
  • the hollow interior (2) of the tube (1) has been filled with granular material (3), which increases the bending resistance of the tube (1).
  • the filling material (3) is massive.
  • the volume weight of the filling material (3) is, preferably, and essentially, the same order of magnitude as that of mineral soil. Suitable filling materials (3) may include gravel, sand, fine sand, clay sand and/or clay.
  • the hollow interior (2) of the tube (1) is only partially filled with the filling material (3) so that the filling material mostly remains at the prop-up site of the tube (1) and extends up in the tube (1) for some distance.
  • the bottom end (4) of the tube (1 ) is buried into the ground.
  • a traffic sign is mounted to the top end of the tube (1).
  • Figure 2 shows a reflector post, i.e. so called mounted cats' eyes, which are usually set up at regular intervals along the roadside.
  • the reflector sign post resembles the embodiment of Figure 1, but in this embodiment, the tube (1) is equipped with a stopper (6) to block the bottom end (4) of the tube.
  • This stopper (6) prevents the filling material inside the tube from becoming damp as a consequence of humidity of the soil. If a special substance is used as the filling material, it will spoil or harden as a consequence of humidity rising from the ground.
  • the tube (1 ) consists of a lid (7) which covers the top end (8) of the tube (1). By removing the lid (7), the amount of the filling material (3) can be checked and adjusted, if necessary.
  • Figure 3 shows the lower end of a lamp post, which in addition to the structure discussed in Figure 1, also consists of a post erection foot (5) buried into the ground, and into which the tube (1) is mounted.
  • the tube (1) is equipped with a stopper (6) which blocks the lower end (4) of the tube. This stopper (6) prevents the filling material (3) from flowing into the recess in the post erection foot (5) to which the lower end of the tube is attached.
  • tube 1 consists of two successive tubes: 1 1 and 1 2 , which are joined together by their ends. There can be more than two tubes joined together. After the first tube has been erected, it can be filled with sand, after which the second tube is joined to the first, and is in turn, filled with sand etc.
  • the safety post presented in Figures 1 and 2 is erected in the following manner: first, a hole is dug into the ground, and the thin-walled plastic tube (1) is driven down into the hole.
  • the wall strength (1) of a plastic tube is designed so that it will bend even with minimal force.
  • granular material such as sand, is poured into the hollow (2) of the tube (1). This increases the bending resistance of the tube (1) so that it withstands normal loads, such as wind, and static as well as dynamic loads caused by parts mounted to it etc.
  • the post When the post is exposed to a greater than normal dynamic load, for example, a car colliding into the post, the post bends, yields or breaks easily, because granules formed by the filling material can move freely in relation to each other and the tube, and consequently the colliding vehicle is not damaged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Signs Or Road Markings (AREA)
EP96660003A 1995-03-17 1996-03-18 Poteau de sécurité et son procédé de construction Withdrawn EP0735194A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI951280 1995-03-17
FI951280A FI97559C (fi) 1995-03-17 1995-03-17 Turvatolppa ja menetelmä turvatolpan muodostamiseksi

Publications (2)

Publication Number Publication Date
EP0735194A2 true EP0735194A2 (fr) 1996-10-02
EP0735194A3 EP0735194A3 (fr) 1996-12-04

Family

ID=8543077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96660003A Withdrawn EP0735194A3 (fr) 1995-03-17 1996-03-18 Poteau de sécurité et son procédé de construction

Country Status (2)

Country Link
EP (1) EP0735194A3 (fr)
FI (1) FI97559C (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002090663A1 (fr) * 1999-11-08 2002-11-14 Automotive Safety Engineering Pty Ltd Borne de securite
WO2011077392A3 (fr) * 2009-12-22 2011-08-18 Khutso Security Services (Pty) Limited Ensemble poteau de feu de signalisation
DE102010038244A1 (de) 2010-10-18 2012-01-19 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Straßenbegrenzungs- oder Leitpfosten
GB2496896A (en) * 2011-11-25 2013-05-29 Safari Sports Ltd A rounders post with a polyurethane foam filling
WO2019172325A1 (fr) * 2018-03-08 2019-09-12 有限会社神奈川技研 Structure de panneau de signalisation, panneau de signalisation et structure de panneau

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20205552A1 (en) 2020-05-28 2021-11-29 Normiopaste Oy SAFETY MASK

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1424093A (fr) * 1964-03-17 1966-01-07 Fischer Ag Georg Poteau de signalisation et son procédé de fixation
CA965573A (en) * 1972-11-10 1975-04-08 Georg Ebinger Guide picket
US4078867A (en) * 1975-12-24 1978-03-14 Grandview Industries, Limited Traffic marker post
US4435930A (en) * 1980-10-14 1984-03-13 Plym Oscar W Traffic safe pole

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002090663A1 (fr) * 1999-11-08 2002-11-14 Automotive Safety Engineering Pty Ltd Borne de securite
US7052201B2 (en) 1999-11-08 2006-05-30 Automotive Safety Engineering Pty Ltd Safety bollard
WO2011077392A3 (fr) * 2009-12-22 2011-08-18 Khutso Security Services (Pty) Limited Ensemble poteau de feu de signalisation
DE102010038244A1 (de) 2010-10-18 2012-01-19 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Straßenbegrenzungs- oder Leitpfosten
GB2496896A (en) * 2011-11-25 2013-05-29 Safari Sports Ltd A rounders post with a polyurethane foam filling
WO2019172325A1 (fr) * 2018-03-08 2019-09-12 有限会社神奈川技研 Structure de panneau de signalisation, panneau de signalisation et structure de panneau
JPWO2019172325A1 (ja) * 2018-03-08 2021-03-11 有限会社神奈川技研 標識柱の構造、標識柱、及び柱構造

Also Published As

Publication number Publication date
FI951280A0 (fi) 1995-03-17
FI97559C (fi) 1997-01-10
EP0735194A3 (fr) 1996-12-04
FI97559B (fi) 1996-09-30

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