EP0655534B1 - Rising buffer for road barriers - Google Patents

Rising buffer for road barriers Download PDF

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Publication number
EP0655534B1
EP0655534B1 EP94830404A EP94830404A EP0655534B1 EP 0655534 B1 EP0655534 B1 EP 0655534B1 EP 94830404 A EP94830404 A EP 94830404A EP 94830404 A EP94830404 A EP 94830404A EP 0655534 B1 EP0655534 B1 EP 0655534B1
Authority
EP
European Patent Office
Prior art keywords
strip
buffer
closed
supports
steel
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.)
Expired - Lifetime
Application number
EP94830404A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0655534A1 (en
Inventor
Gabriele Camomilla
Manlio Botto
Adriano Fabbri
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.)
Autostrade Concessioni e Costruzioni Autostrade SpA
Original Assignee
Autostrade Concessioni e Costruzioni Autostrade SpA
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 Autostrade Concessioni e Costruzioni Autostrade SpA filed Critical Autostrade Concessioni e Costruzioni Autostrade SpA
Publication of EP0655534A1 publication Critical patent/EP0655534A1/en
Application granted granted Critical
Publication of EP0655534B1 publication Critical patent/EP0655534B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E01F15/0438—Spacers between rails and posts, e.g. energy-absorbing means

Definitions

  • the present invention relates to metal barriers for roads, preventing the jumping over, or in any case decreasing the risk of jumping over by a vehicle.
  • the invention relates to a metal road barrier which includes specific rising spacers or buffers, that is, of a kind which, besides absorbing energy during light collisions, are also used to rise the blade in order to improve the resistance to surmounting by a vehicle in case of more serious collisions (see f.i. DE-A-1 759 575).
  • Spacers or buffers having this function are already known, and they are fixed to the posts of the barrier supporting a triple-wave blade, a double-V blade (W) with opposite W-blades, or a simple W-blade.
  • These spacers are made by steel plates having a central aperture with a substantially quadrilateral shape. One side of the plate is rigidly connected to the upper end of the post, whereas the opposite end is connected to the wavy blade.
  • the spacer or buffer may also include other apertures, for example circular apertures arranged along a circular arc, for the purpose of obtaining a "controlled" deformation of the buffer (plate), which allows it to fold itself upwardly, causing the blade to "rise”.
  • the barriers which comprise this known kind of spacers or buffers have an excessive lateral extension.
  • the object of the present invention is to realize a spacer or buffer of a so-called “rising” type, which overcomes the aforesaid drawbacks, and which is therefore particularly useful on bridges and on traffic dividers (median strips) with modest width, where the extension of the barrier plays a fundamental theme.
  • the buffer or spacer of the present invention has a completely different construction with respect to known ones, it occupies less space, and it has exactly the same functions.
  • Fig. 1 shows the pavement 2 and the grass-grown embankment 3 into which the post 4 is driven until it has reached a predetermined depth in the resistant core, below said grass-grown embankment, made up of a mixture of sand, gravel, etc.
  • the post 4 may have a variable length according to the requirements, i.e. according to the required height of the barrier which depends upon the traffic type and the locality.
  • Fig. 1 also shows schematically the spacer or buffer 1 which is fixed by means of bolts 5, 5' to the (triple-wave) blade 6 and to the post 4.
  • the structure of the spacer 1 is shown in detail in Figs. 2 and 3.
  • the closed strip 7 which is preferably obtained by welding an "open” strip at its opposite ends.
  • Two supporting parts 8, 9 are welded at the points indicated by numerals 10, 10' and 11, 11', to the closed strip 7 having a longitudinal cross-section substantially shaped like a parallelogram.
  • the supporting part 8 supports the triple-wave blade 6, whereas the supporting part 9 makes up that part which holds the spacer or buffer by means of its rigid connection to the post 4.
  • Both supporting parts 8, 9 are made up by folded strips, as shown in Fig. 2, which have recesses 12, 13. Said recesses 12, 13 are formed for the purpose of causing a deformation of the supporting parts during the collision, prior to the deformation of the closed strip 7.
  • the deformation of the supports 8, 9 causes the rotation of the closed strip 7.
  • the deformation of the supports 8, 9 causes the rotation of the closed strip 7 in the direction of the arrow 7 (Fig. 2). Therefore it is necessary that the supports 8, 9 are made of a kind of steel which is less resistant than that which makes up the closed strip 7.
  • Fig. 4 there is shown the sequence of deformation steps of the barrier. While the supporting parts 8, 9 get deformed, the blade or wave 6 "rises" and the barrier moves back. As shown in Fig. 4, the deformation of the closed strip 7 shaped like a parallelogram takes place only in the last step of the collision.
  • Fig. 2 shows the through holes 14a, 14b, 15a, 15b for the bolts 5, 5'. It can be seen that the two holes 14a, 15b are obtained on the closed strip 7 shaped like a parallelogram, whereas the holes 14b, 15a are located on the supporting parts 8, 9.
  • Fig. 1 schematically shows two reinforcement elements 16 of the closed strip 7, whereas in Fig. 3 the supporting part 9 has a reinforcement element 17 (a similar reinforcement element could also be present on the supporting part 8).
  • the rectangular portion 18 of the supporting part 9, which extends itself from the line 19 to the welding line 11', may also be absent, so as to save a greater amount of material.
  • the present invention has been described according to a preferred embodiment thereof, and obviously the form of the supporting parts 8, 9 and of the closed strip 7 could be varied; the latter may then have a shape which differs from that of a parallelogram, i.e. (substantially) any quadrilateral shape whatever. It is obvious that besides the triple wave 6, a W-shaped wave or a blade with two opposite W's or the like could also be employed. Moreover, on the same post there could be more than one row of blades, having variable shapes and sizes. Furthermore, the thickness of the supports and of the closed strip can be varied indipendently, according to the resistance which is required, and therefore according to the application of the barrier.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Vibration Dampers (AREA)
  • Body Structure For Vehicles (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Magnetically Actuated Valves (AREA)
  • Buffer Packaging (AREA)
EP94830404A 1993-11-26 1994-08-12 Rising buffer for road barriers Expired - Lifetime EP0655534B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM930788 1993-11-26
ITRM930788A IT1262460B (it) 1993-11-26 1993-11-26 Distanziatore a risalita per barriere stradali.

Publications (2)

Publication Number Publication Date
EP0655534A1 EP0655534A1 (en) 1995-05-31
EP0655534B1 true EP0655534B1 (en) 1998-07-29

Family

ID=11402072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94830404A Expired - Lifetime EP0655534B1 (en) 1993-11-26 1994-08-12 Rising buffer for road barriers

Country Status (5)

Country Link
EP (1) EP0655534B1 (it)
AT (1) ATE169076T1 (it)
DE (1) DE69412042T2 (it)
ES (1) ES2122215T3 (it)
IT (1) IT1262460B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59905925D1 (de) * 1999-06-14 2003-07-17 Spig Schutzplanken Prod Gmbh Schutzplankenanordnung
FR2843762B1 (fr) * 2002-08-20 2011-07-29 Jean Claude Frederic Dupuis Barriere de securite pour voies de circulation de vehicules, comprenant des ecarteurs deformables
FR2857386B1 (fr) * 2003-07-09 2005-09-02 Profiles Du Ct Ecarteur pour poteau de lisse de barriere de securite routiere ou autoroutiere
ES2297973B1 (es) * 2005-06-03 2009-07-20 Ferrovial Agroman, S.A. Barrera de seguridad.
EP2136000A1 (en) * 2008-06-16 2009-12-23 Anas S.p.A. Strain controlled universal spacer for guardrails
DE202010000658U1 (de) 2010-01-07 2010-04-15 Studiengesellschaft Für Stahlschutzplanken E.V. Schutzplankenanordnung
ITBA20100039A1 (it) * 2010-10-07 2012-04-08 Gruppo Massara S P A "dispositivo distanziatore per il supporto di barriere stradali in metallo e/o altro materiale"
ES2395680B1 (es) * 2011-07-27 2013-12-18 Auxiliar De Perfiles Perforados Metálicos, S.A. Amortiguador para pretil y pretil
DE102011055959A1 (de) * 2011-12-02 2013-06-06 Heintzmann Sicherheitssysteme Gmbh & Co. Kg Fahrzeugrückhaltesystem

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7106318U (de) * 1971-05-27 Hch Bertrams Ag Abstandhalter fur Stahlleitplanken
DE1293801B (de) * 1967-05-17 1969-04-30 Neher Gmbh Stahl U Appbau A Leitplanke fuer Strassen, bei der die Holme ueber verformbare buegelartige Zwischenstuecke an den Pfosten befestigt sind
DE1759575C3 (de) * 1967-08-31 1974-10-17 Robert 5779 Bremke Berens Abstandhalter für Leitplanken. Ausscheidung aus: 1658647
BE794733A (fr) * 1972-01-31 1973-05-16 Baumann Ernst Amortisseur de choc, en particulier pour systemes a rails de securite

Also Published As

Publication number Publication date
ITRM930788A0 (it) 1993-11-26
ITRM930788A1 (it) 1995-05-26
DE69412042T2 (de) 1999-02-18
DE69412042D1 (de) 1998-09-03
ES2122215T3 (es) 1998-12-16
EP0655534A1 (en) 1995-05-31
ATE169076T1 (de) 1998-08-15
IT1262460B (it) 1996-06-19

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