EP1495190B1 - Filet de securite - Google Patents

Filet de securite Download PDF

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Publication number
EP1495190B1
EP1495190B1 EP02767527A EP02767527A EP1495190B1 EP 1495190 B1 EP1495190 B1 EP 1495190B1 EP 02767527 A EP02767527 A EP 02767527A EP 02767527 A EP02767527 A EP 02767527A EP 1495190 B1 EP1495190 B1 EP 1495190B1
Authority
EP
European Patent Office
Prior art keywords
meshes
cable
net
barrier
diameter
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.)
Revoked
Application number
EP02767527A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1495190A1 (fr
Inventor
Patrick Rentchler
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=28459776&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1495190(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP1495190A1 publication Critical patent/EP1495190A1/fr
Application granted granted Critical
Publication of EP1495190B1 publication Critical patent/EP1495190B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F31/00Making meshed-ring network from wire
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F7/00Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
    • E01F7/04Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
    • E01F7/045Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps

Definitions

  • the present invention relates to safety barriers used for the retention of moving objects or the holding of moving objects and particularly relates to a safety barrier comprising a net formed of interlaced meshes.
  • Safety gates made of a net are increasingly used, either to hold moving objects such as rocks that stand out from a mountainside or motor vehicles that are thus prevented from going out of their way.
  • traffic separation of the two lanes of a highway
  • blocks of rock likely to detach from a mountainside adjacent to a traffic lane or inhabited place.
  • rockfall protection barriers consist of a net held by guyed posts across the predictable path of rocks on sloping terrain.
  • a dynamic protection barrier according to the preamble of claim 1 is known from the document CH 677 376 .
  • the object of the invention is to provide a safety barrier used for the retention of moving objects or the holding in place of moving objects whose net is formed of deformable circular meshes do not having no junction point that may be weakened or broken by impact by a moving object.
  • the object of the invention is therefore a dynamic protection barrier against falling rocks comprising a net (12) composed of circular meshes (30 to 44) interwoven with each other so that each mesh is interlaced with at least four other adjacent meshes (30 to 44) and an edging cable (46) for fixing the net (12), characterized in that each of said meshes (30 to 44) consists of a cable (50) composed of a single strand wound helically n times on itself, wherein the diameter of the cable (50) constituting the meshes (30 to 44) has an increasing value according to the location of the meshes (30 to 44), the meshes (40, 42, 44) closest to said border cable (46) consisting of a cable (50) whose diameter is greater than that of the cable constituting the meshes (30, 32, 36) being near the center of the net.
  • a safety barrier used for the retention of rocks in the mountains is generally installed on a sloping terrain along a contour line.
  • a mesh net 12 is secured to the ground by means of two posts 14 and 16 anchored to the ground and held by anchors anchored to the ground by means of anchor plates or other anchoring means.
  • the net 12 which serves to dissipate the energy due to the falling of rock blocks is fixed to the two poles by means of sloping curling cables.
  • the net 12 is formed of a multitude of interlaced meshes as illustrated on the figure 2 which represents a preferred embodiment of the invention.
  • Each mesh such as mesh 30 is interlaced with four adjacent meshes 32, 34, 36 and 38 although it is possible that each mesh is interlaced with a larger number of meshes, for example 6 meshes.
  • Each mesh is circular and does not include a crimping ring as explained above, unlike the stitches described in FIG. document EP 0.370.945 .
  • the mesh constituting the edge of the net such as the meshes 40, 42 or 44 are interwoven with the cable 46 forming the edge of the net.
  • the cable constituting the mesh illustrated on the figure 3 consists of several strands.
  • the cable consists of six strands surrounding a space that may or may not be occupied by a core.
  • the strands are twisted so as to each form a helix of a determined pitch.
  • the strands constituting the cable are separate strands.
  • the six strands are in fact one and the same strand which is looped back on itself and therefore has a length equal to six times the circumference of the mesh if the two ends of the strand are placed butt as best as it is.
  • the braiding of the cable constituting a mesh is made by twisting on itself a strand whose length is equal to six mesh circumferences, the strand to be passed six times in each adjacent mesh, at the time of construction of the mesh, in order to interlace the mesh in formation with the adjacent meshes.
  • the construction of the mesh can be done manually.
  • the operator having at his disposal a strand with a length equal to 6 times the circumference of a mesh, loops 3 times, but in opposite directions, each of the two portions of the strand starting from the midpoint.
  • the mesh comprising 6 strands has been made and the operator has both ends of the strand which normally juxtapose perfectly.
  • These two ends placed end to end are then entered inside the cable so that the latter does not reveal any point of discontinuity.
  • the mesh of the thread forming the subject of the invention does not comprise any crimping ring between two ends of a cable forming a mesh. There is therefore continuity of the cable all along the mesh without a weak point constituted by such a ring because it would be subjected to a significant force exerted on the mesh during the fall of a rock and which , in addition, could be crushed by the rock drastically reducing the strength of the mesh. Unlike the traditional ring mesh, the force experienced by the mesh during the fall of a rock, is balanced throughout the cable by the friction exerted by the strand on itself.
  • the cable consisting of six strands resulting from the same strand looped six times on itself is the preferred embodiment, the cable could consist of a number of strands n different, the strands still being formed using 'a single strand. But it goes without saying that the fewer strands, the less friction force between strands surrounding the pulling force resulting from the fall of a rock is important. Therefore, the minimum number of strands can not be less than three. Similarly, the number of strands constituting the cable can not be too large because too many twisted strands, although increasing the friction force between strands, results in a cable too large diameter which decreases the flexibility of the meshes.
  • n is therefore preferably less than or equal to 8.
  • the mesh diameter may be between 200mm and 600mm without the maximum being limited.
  • the meshes of the first row could have a diameter of 300mm while the meshes of the second row would have a diameter of 350mm. But in this case, it is necessary not to provide mesh (ie leave a place empty) after each sequence of six meshes of the second row.
  • the diameter of the cable constituting each mesh may be different, a larger diameter to dissipate more energy than a smaller diameter.
  • the diameter of the cable can be preferably between 5mm and 20mm.
  • the net prestressed during installation is achieved by applying to the net a tension force in the horizontal direction and / or the vertical direction during its assembly.
  • This prestressing makes it possible to prevent the barrier from being too flexible.
  • the meshes are not circular but oval since they are subjected to a tension force according to one of their dimensions.
  • the material used for the cables constituting the meshes is preferably metal and in particular galvanized or stainless steel.
  • a material consisting of synthetic polymer fibers for example polyester or polyamide and especially Kevlar or Dyneema (registered trademarks).
  • the safety barrier according to the invention can be used as a protective barrier along an automobile circuit to prevent causing accidents among spectators, or can be used as a separation barrier between the two lanes of a highway.
  • a barrier can be used as a barrier for maintaining land or rocks when they are likely to detach from the side of a mountain, or when draining at sea or during the construction of docks. A grip on the sea. Note that in the case of use of the barrier as a barrier, it may be advisable to put the net prestressing during its installation as explained above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Materials For Medical Uses (AREA)
  • Fencing (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP02767527A 2002-04-12 2002-06-14 Filet de securite Revoked EP1495190B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0204576 2002-04-12
FR0204576A FR2838462B1 (fr) 2002-04-12 2002-04-12 Barriere de protection dynamique contre les chutes de rochers dont le filet est forme de mailles entrelacees
PCT/FR2002/002070 WO2003091502A1 (fr) 2002-04-12 2002-06-14 Barriere de securite dont le filet est forme de mailles entrelacees

Publications (2)

Publication Number Publication Date
EP1495190A1 EP1495190A1 (fr) 2005-01-12
EP1495190B1 true EP1495190B1 (fr) 2011-05-04

Family

ID=28459776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02767527A Revoked EP1495190B1 (fr) 2002-04-12 2002-06-14 Filet de securite

Country Status (8)

Country Link
EP (1) EP1495190B1 (pt)
AT (1) ATE508227T1 (pt)
AU (1) AU2002330534A1 (pt)
DE (1) DE60239964D1 (pt)
ES (1) ES2365911T3 (pt)
FR (1) FR2838462B1 (pt)
PT (1) PT1495190E (pt)
WO (1) WO2003091502A1 (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2838462B1 (fr) 2002-04-12 2004-10-08 Patrick Rentchler Barriere de protection dynamique contre les chutes de rochers dont le filet est forme de mailles entrelacees
ITMI20031601A1 (it) * 2003-08-04 2005-02-05 Italgeo S R L Rete ad anelli di filo, particolarmente per barriere paramassi e rivestimenti di parete rocciose, nonche' procedimento per la realizzazione della rete.
MA46309A1 (fr) * 2017-01-27 2020-10-28 Maccaferri Off Spa Filet de protection comprenant des boucles hautement résilientes
IT201700008830A1 (it) * 2017-01-27 2018-07-27 Maccaferri Off Spa Rete di protezione ad anelli ad elevata elasticità
DE102017123816A1 (de) 2017-10-12 2019-04-18 Geobrugg Ag Sicherheitsnetz

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE123957C (pt) *
US3539135A (en) * 1968-04-15 1970-11-10 Eric H Berg Blasting mat
FR2622611B1 (fr) * 1987-10-30 1990-02-23 Mecanroc Barriere pour blocs et pierres devalants
CH681375A5 (pt) 1988-11-10 1993-03-15 Fatzer Ag
CA2145829C (en) * 1994-04-08 2003-03-18 Bernhard Eicher Method and apparatus for producing a retaining net
EP1255623B1 (en) * 2000-02-15 2004-01-21 S.I.C. MILANO S.r.l. Machine and method for helically winding a wire about a ring-shaped core
FR2838462B1 (fr) 2002-04-12 2004-10-08 Patrick Rentchler Barriere de protection dynamique contre les chutes de rochers dont le filet est forme de mailles entrelacees

Also Published As

Publication number Publication date
EP1495190A1 (fr) 2005-01-12
FR2838462B1 (fr) 2004-10-08
DE60239964D1 (de) 2011-06-16
ES2365911T3 (es) 2011-10-13
ATE508227T1 (de) 2011-05-15
FR2838462A1 (fr) 2003-10-17
WO2003091502A1 (fr) 2003-11-06
AU2002330534A1 (en) 2003-11-10
PT1495190E (pt) 2011-08-23

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