EP0333576B1 - Dreidimensionales Material zur Erdverstärkung - Google Patents

Dreidimensionales Material zur Erdverstärkung Download PDF

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Publication number
EP0333576B1
EP0333576B1 EP19890400696 EP89400696A EP0333576B1 EP 0333576 B1 EP0333576 B1 EP 0333576B1 EP 19890400696 EP19890400696 EP 19890400696 EP 89400696 A EP89400696 A EP 89400696A EP 0333576 B1 EP0333576 B1 EP 0333576B1
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EP
European Patent Office
Prior art keywords
strips
same
twisted
bands
reinforcement
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
EP19890400696
Other languages
English (en)
French (fr)
Other versions
EP0333576A2 (de
EP0333576A3 (en
Inventor
Michel Sotton
Robert Bolliand
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.)
Institut Francais Textile et Habillement
Original Assignee
Institut Francais Textile et Habillement
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 Institut Francais Textile et Habillement filed Critical Institut Francais Textile et Habillement
Publication of EP0333576A2 publication Critical patent/EP0333576A2/de
Publication of EP0333576A3 publication Critical patent/EP0333576A3/fr
Application granted granted Critical
Publication of EP0333576B1 publication Critical patent/EP0333576B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
    • D04H3/045—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles for net manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/013—Regenerated cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E02D17/202—Securing of slopes or inclines with flexible securing means

Definitions

  • the present invention relates to the reinforcement of soils, in particular for the constitution of embankments, using three-dimensional materials. It relates more particularly to a three-dimensional material of simple design and its manufacturing process.
  • These soil reinforcement materials generally consist of continuous sheets laid flat on the soil to be reinforced; these sheets are in the form of rolls, which are unwound and cut to the dimensions of the structure. They are then covered by soil.
  • the reinforcement material used can have a three-dimensional structure, in honeycomb, such so that the ground covering the material fills the corresponding cells and the material, anchored in the ground, prevents the sliding of the ground contained in the cells and that which is linked to it.
  • honeycomb known from patent US Pat. that of the band. The manufacture of such a material is complex; it requires prior accordion folds of the strip, delicate collages which are sometimes ill-suited to the constraints of use of the material; moreover, the installation of this material also requires great technical skill.
  • the aim which the applicant has set is to propose a three-dimensional material for soil reinforcement which is simple to manufacture and implement and which moreover is particularly suitable for the reconstitution of land with planting of trees.
  • the material according to the invention has a structure (cf. preamble to claim 1 appended), known from document FR.A.2 212 469 which relates to a lining or reinforcement panel intended in particular for the construction of tunnels and which lends itself particularly well to the implementation of the sprayed concrete technique.
  • the three-dimensional material for soil reinforcement consists of a network of two sets of flat bands, all the bands of the same game having substantially the same direction, the bands being intertwined and fixed to each other in the areas common crisscrossing, said areas being substantially in the same plane corresponding to the ground plane to be reinforced, the bands of the same set of bands being twisted between two consecutive crisscrossing zones.
  • the flat bands of the two sets of bands are biodegradable textile bands, and the twisted bands of said same set of bands are stiffened by impregnating and reinforcing agents.
  • the material of the invention is not only capable of being wound up in the form of a coil, and unwound on the ground, but also capable of being gradually eliminated while the plantings, made in the containers delimited by the two sets of bands, provide natural reinforcement of the soil.
  • the strips are fixed in the common criss-crossing zones in a known manner, for example by gluing, stapling, sewing, heat-sealing, according to the specifications to be satisfied.
  • the strips are made of a nonwoven of viscose fibers stiffened with polyvinyl alcohol.
  • the spacing between the strips and the width of the strips depends on the applications, and in particular on the slope, for example of the dune to be reinforced.
  • the two sets of bands preferably have perpendicular directions, the spacing between two bands of the same set is preferably between 10 and 30 centimeters and the width of the bands between 5 and 10 centimeters.
  • All the constituent bands of the material of the invention can have the same width, or else the bands of the same set can have the same width, different from that of another set.
  • the material 1 for soil reinforcement is composed of flat strips 2 and twisted strips 3.
  • the flat strips 2 are parallel to each other; likewise the twisted strips 3 are mutually parallel and perpendicular to the flat strips 2.
  • the two sets of strips 2 and 3 are secured by means of staples 4, connecting the areas 5 of intersection where a flat strip 2 is superimposed to a twisted strip 3.
  • Each of the twisted bands 3 is produced from a viscose nonwoven fabric of the order of 300 g / m2 and having good rigidity.
  • This rigidity obtained thanks to impregnating or reinforcing agents is necessary to prevent the twisted part from bending in the plane of the flat strips 2, and to preserve the three-dimensional structure of the material 1. In the present case it is acts on polyvinyl alcohol at a rate of 50 g / m2.
  • the flat strips 2 can be made of the same material or in another material, the rigidity of the flat strips 2 not being as essential.
  • the width of the twisted bands 3 must be sufficient for the twisted parts 6 to form, with respect to the plane of the flat bands 2, that is to say on the ground plane, extra thicknesses capable of retaining the soil.
  • This width may be different depending on the use made of the material, in particular it will be at least five centimeters for reinforcement of the structure where the material is placed on a substantially horizontal floor, in the form of successive layers; it will be at least ten centimeters for uses in slope stabilization such as embankments or embankments. .
  • the bands were five centimeters in width and were spaced from each other by thirty centimeters.
  • the twists 6 are obtained by stapling, one face of said strip 3 being placed on a flat strip 2 then the other face of said strip 3 being placed on the next flat strip, and and so on. In this way, a 180 ° twist of the strip is produced between two stapling zones.
  • the twists 6 which follow one another on the same twisted strip 3 are alternated, in one direction then in the other; the twists 6 opposite each other on two immediately parallel twisted strips are alternated.
  • the material 1 is unwound from its reel and placed on the ground of the embankment, the flat strips 2 being in the direction of the slope, and the twisted strips 3 being perpendicular to the slope.
  • the twisted parts 6 form walls in the form of a helix above the ground plane. When the material is covered with soil, the latter blocks the material in position by the pressure exerted on the flat strips 2, but the soil is itself locked in position thanks to the walls formed by the twisted parts 6 which prevent it to slide along the slope.
  • the strips made of a biodegradable material are particularly useful in the case of reconstitution of dunes with planting of trees.
  • the young plants are placed in front of the containers delimited by the bands.
  • the bands decompose gradually, while the roots of the plantations anchor the soil. Plantations thus ensure the natural reinforcement of the soil in the long term, and the progressive elimination of the reinforcement material allows the development without constraint and without pollution of these plantations.
  • the invention is not limited to the example given above but covers, within the scope of the appended claims, all the variant embodiments of a three-dimensional material for soil reinforcement consisting of networked biodegradable textile bands, at least of which some stiffened are twisted.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Claims (5)

  1. Dreidimensionales Material zur Bodenverstärkung, das geeignet ist, in Form einer Spule aufgewickelt zu werden, gebildet aus einem Netz von zwei Sätzen von ebenen Bändern (2,3), wobei alle Bänder eines selben Satzes im wesentlichen die gleiche Richtung aufweisen, wobei die Bänder überkreuzt und miteinander verbunden sind in den gemeinsamen Kreuzungszonen 15), wobei die Zonen (5) im wesentlichen in einer selben Ebene sind, die der Ebene des zu verstärkenden Bodens entspricht, wobei die Bänder (3) eines selben Satzes von Bändern zwischen zwei aufeinanderfolgende Kreuzungszonen verdrillt sind,
    dadurch gekennzeichnet,
    daß die ebenen Bänder (2,3) der beiden Sätze von Bändern textile, biologisch abbaubare Bänder sind, und daß die verdrillten Bänder (3) des selben Satzes von Bändern versteift sind durch Imprägnierungs- oder Verstärkungszuschlagstoffe.
  2. Material nach Anspruch 1, dadurch gekennzeichnet, daß die gekreuzten Bänder hergestellt sind aus einer nicht gewebten Viskose, versteift durch Polyvenylakohol.
  3. Material nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß, gebildet aus zwei Sätzen von Bändern, die Bänder des ersten Satzes eine erste Richtung haben und die Bänder des zweiten Satzes eine zweite Richtung senkrecht zur ersten Richtung haben, wobei der Abstand zwischen zwei Bändern des selben Satzes in der Größenordnung von 10 bis 30 cm liegt.
  4. Material nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß auf einem selben Band (3) zwei aufeinanderfolgende Verdrillungen alternierend ausgeführt sind, die eine in die eine Richtung und die andere in die andere Richtung.
  5. Material nach Anspruch 3, dadurch gekennzeichnet, daß auf zwei parallelen Bändern eines selben Satzes, zwei benachbarte Verdrillungen alternierend ausgeführt sind, die eine in die eine Richtung und die andere in die andere Richtung.
EP19890400696 1988-03-18 1989-03-14 Dreidimensionales Material zur Erdverstärkung Expired - Lifetime EP0333576B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8804113A FR2628771B1 (fr) 1988-03-18 1988-03-18 Materiau tridimensionnel pour le renforcement des sols
FR8804113 1988-03-18

Publications (3)

Publication Number Publication Date
EP0333576A2 EP0333576A2 (de) 1989-09-20
EP0333576A3 EP0333576A3 (en) 1990-12-27
EP0333576B1 true EP0333576B1 (de) 1993-06-09

Family

ID=9364741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890400696 Expired - Lifetime EP0333576B1 (de) 1988-03-18 1989-03-14 Dreidimensionales Material zur Erdverstärkung

Country Status (3)

Country Link
EP (1) EP0333576B1 (de)
DE (1) DE68906931T2 (de)
FR (1) FR2628771B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2292843A1 (de) 2009-07-25 2011-03-09 Centrum dopravniho vyzkumu, v.v.i. Vorrichtung zum Verlegen einer Geokunststoff-Bewehrung und Verfahren zur Verlegung
EP2292845A1 (de) 2009-07-25 2011-03-09 Centrum dopravniho vyzkumu, v.v.i. Geosynthetisches Material zur Verstärkung von Böden
EP2385174A1 (de) 2010-12-27 2011-11-09 Centrum Dopravního Vyzkumu, V.v.i. Befestigungsstift für geosynthetische Materialien

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8816849D0 (en) * 1988-07-15 1988-08-17 Helix Reinforcements Ltd Improvements relating to earth reinforcement
IT1242074B (it) * 1990-10-12 1994-02-08 Comes Spa Muro vegetativo in terra rinforzata e procedimento per la sua realizzazione
DE4422337A1 (de) * 1994-06-27 1996-01-04 Henkel Kgaa Formteile zum Sichern von Böschungen
GB9615161D0 (en) * 1996-07-19 1996-09-04 Univ Birmingham Concrete products
CZ303265B6 (cs) * 2009-07-21 2012-07-04 Centrum dopravního výzkumu, v.v.i. Geosyntetická mríž

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2212469B1 (de) * 1972-12-28 1978-03-03 Gescoriac
FR2441685B1 (fr) * 1978-11-14 1985-12-13 Vignon Jean Francois Materiau textile alveolaire permettant de consolider et assainir les sols pour travaux publics ou autres
US4353956A (en) * 1981-06-05 1982-10-12 Nalle George S Jr Helical net

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2292843A1 (de) 2009-07-25 2011-03-09 Centrum dopravniho vyzkumu, v.v.i. Vorrichtung zum Verlegen einer Geokunststoff-Bewehrung und Verfahren zur Verlegung
EP2292845A1 (de) 2009-07-25 2011-03-09 Centrum dopravniho vyzkumu, v.v.i. Geosynthetisches Material zur Verstärkung von Böden
EP2385174A1 (de) 2010-12-27 2011-11-09 Centrum Dopravního Vyzkumu, V.v.i. Befestigungsstift für geosynthetische Materialien

Also Published As

Publication number Publication date
DE68906931D1 (de) 1993-07-15
EP0333576A2 (de) 1989-09-20
FR2628771A1 (fr) 1989-09-22
EP0333576A3 (en) 1990-12-27
DE68906931T2 (de) 1993-12-16
FR2628771B1 (fr) 1992-06-12

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