EP2171160B1 - Bande de stabilisation renforcee destinee a etre utilisee dans des ouvrages en sol renforce - Google Patents

Bande de stabilisation renforcee destinee a etre utilisee dans des ouvrages en sol renforce Download PDF

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Publication number
EP2171160B1
EP2171160B1 EP08827937A EP08827937A EP2171160B1 EP 2171160 B1 EP2171160 B1 EP 2171160B1 EP 08827937 A EP08827937 A EP 08827937A EP 08827937 A EP08827937 A EP 08827937A EP 2171160 B1 EP2171160 B1 EP 2171160B1
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EP
European Patent Office
Prior art keywords
reinforced
strip
cord
stabilising strip
longitudinal part
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.)
Active
Application number
EP08827937A
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German (de)
English (en)
French (fr)
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EP2171160A1 (fr
Inventor
Jean-Claude Morizot
Nicolas Freitag
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.)
Terre Armee Internationale
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Terre Armee Internationale
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Publication of EP2171160A1 publication Critical patent/EP2171160A1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
    • E02D29/0241—Retaining or protecting walls comprising retention means in the backfill the retention means being reinforced earth elements
    • 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 a reinforced stabilization strip for use in reinforced soil or reinforced earth, and the use of such a strip for the construction of reinforced soil or reinforced earth.
  • a reinforced soil structure combines a compacted embankment, a siding and reinforcements connected or not to the facing.
  • reinforcements may be used: metal, for example galvanized steel, stabilizing strips for example based on polyester fibers. They are set up in the soil with a density depending on the constraints that can be exerted on the structure, the thrust forces of the ground being taken up by the friction soil-reinforcements.
  • the facing is most often made from prefabricated concrete elements in the form of slabs or blocks, juxtaposed to cover the front face of the structure.
  • the reinforcements are provided in the form of strips having a length of about 3 to 10 meters, although shorter or longer strips may be used.
  • the width of the strips is generally between 4 and 6 centimeters although it is possible to use strips of width up to 10 or 25 centimeters, see more.
  • Their thickness varies, for example, from about 1 millimeter to a few centimeters and is generally between 1 to 6 millimeters.
  • the purpose of the stabilization strips is to transmit the forces into the ground or earth and thus distribute the forces.
  • the band is capable of transmitting the forces over its entire length so it has a high tensile strength.
  • a solution known to those skilled in the art consists in using strips having a longitudinal portion in the form of a central portion to withstand a tensile force, the central portion having two lateral parts which protrude laterally from each other. another of the central portion to rub against the earth, the central portion having a set of fibers arranged parallel to each other so as to enhance the tensile strength.
  • the internal reinforcements of the strips sometimes consist of substantially parallel bundles of wires substantially parallel to each other.
  • Such an arrangement of the fibers presents risks of sliding between fibers, between fiber group and strip, and thus a degradation of the transmission of the force between the ground and the part of the tensile band.
  • An object of the present invention is to provide an alternative solution that transmits forces between a strip and the embankment in which it is placed, which has a high tensile strength and which limits the risk of sliding between fibers and between groups of fibers and tape.
  • the invention thus proposes a reinforced stabilization strip intended to be used in structures in reinforced soil, comprising all the features of claim 1, in particular a longitudinal part, said longitudinal part comprising on at least part of its length at least one rope arranged substantially longitudinally and wrapped in the volume of said longitudinal portion, and such that the material constituting the fibers or son of the rope is based on polymer, for example based on polyester.
  • the rope has a high tensile strength and increases the internal cohesion between the fibers, known effect of EN-873354 and especially of US-5,573,852 which shows a band according to the preamble of claim 1.
  • the arrangement of the fibers or son in the form of rope or rope allows better anchoring of the fibers or son within the longitudinal portion.
  • the invention also relates to the use of a stabilizing strip according to the invention for the construction of a structure in reinforced soil.
  • the invention also relates to a reinforced soil structure comprising at least one stabilizing strip according to the invention.
  • the subject of the invention is also a method for constructing a structure in reinforced soil, in which a facing is placed along a front face of the structure delimiting a volume to be filled, reinforcements are provided in an area of said volume, provides fill material in said volume and compacts the backfill material, wherein said reinforcements comprise at least one stabilizing strip according to the invention.
  • rope means an assembly, for example obtained by twisting or braiding, of at least three fibers composed of a plurality of threads or directly of at least three threads, of textile materials, synthetic, plastic, metallic or a combination of these different fibers or son. It is known to those skilled in the art that the at least three fibers composing a rope are assembled to form a stable construction.
  • the yarns within the meaning of the invention are composed of a set of monofilaments and / or staple fibers and / or fibrillated threads assembled and twisted.
  • a rope of the band according to the invention may comprise at least 3 strands, each strand being composed of a plurality of fibers assembled to form a stable construction.
  • a rope of the band according to the invention may be a braided rope according to the NF EN ISO 1968 standard, namely obtained by braiding together strands to form a stable construction that does not bend.
  • a rope of the band according to the invention may comprise several sets of fibers combining sets of parallel fibers assembled to form a stable construction, for example surrounded by woven or twisted fibers.
  • the chosen cords may for example be thin, with a diameter of the order of one millimeter or more thick with a diameter of about one centimeter.
  • longitudinal portion is the portion of the stabilization strip which extends lengthwise, along the longitudinal axis of said strip.
  • FIG. 1 a perspective view of a stabilizing strip.
  • the longitudinal portion may be of a plastic material such as polyethylene, polypropylene, PVC.
  • the rope is an assembly of three twisted fibers 16.
  • the fibers 16 constituting the rope 14 may be metallic, synthetic, polymeric for example consist of polyester, polyamide or polyolefin, or natural for example based on hemp or a combination of these different fibers.
  • said longitudinal portion 12 of the stabilizing strip 10 is in the form of a central portion 17, said central portion 17 having two side portions 18, in the form of fins, which project laterally to rub against the ground.
  • the longitudinal portion 12 extends laterally on both sides, but could as well extend only one side.
  • the rope 14 is braided from six fibers 16.
  • the fins 18 may be provided with ribs and / or corrugation and / or perforation or any other means known to those skilled in the art to improve frictional interaction with the earth.
  • the band according to the invention may comprise several ropes of the same nature or of different natures, the ropes being wrapped in the volume of the longitudinal portion 12 of said band.
  • Each cord 14 may extend over only a portion of the length of the stabilizing strip 10.
  • the ropes 14 may contain a central core in order to increase their diameters and thus the contact surface between the outer fibers and the material forming the longitudinal portion of the stabilizing strip 10.
  • the strip according to the invention may also comprise a reinforced longitudinal part with a multitude of strings, for example, thin strings distributed throughout the volume substantially homogeneously.
  • a strip according to the invention can be produced, for example, by extrusion, coextrusion, rolling or any other technique known to those skilled in the art to produce metal or polymer strips.
  • the invention also relates to a method of constructing a structure in reinforced soil.
  • FIG 4 illustrates such a method.
  • a compacted embankment 20, in which stabilizing strips 10 according to the invention are distributed, is delimited on the front side of the structure by a facing 23 constituted by juxtaposing prefabricated elements 24, and on the rear side by the ground 25. against which is erected the retaining wall.
  • the stabilizing strips 10 may be connected to the facing elements 24, and extend for a distance within the embankment 21. These stabilizing strips 10 contribute to reinforce the soil located in a reinforced zone Z on the back of the siding 23.
  • the material of the embankment 21 has a high resistance because it is reinforced by the stabilizing strips 10. It is thus able to withstand the shear stresses that are exerted due to tensile forces
  • the reinforced zone Z must naturally have a thickness sufficient to hold the facing 23 firmly.
  • the stabilizing strips 10 are integrated during the manufacture of the facing elements 24. In the frequent case where the elements 24 are prefabricated in concrete, a portion of the stabilizing strips 10 may be embedded in the molded concrete. 24. In the example of book configuration illustrated by the figure 4 the stabilizing strips 10 are arranged in horizontal planes superposed alternately on the height of the structure.
  • the strips may also make it possible to secure the cladding 24 to the wall 26 of the ground by attachment to said wall, for example by means of hooks, loops connected by nailing to the wall 26 or by any other means known to those skilled in the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Ropes Or Cables (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP08827937A 2007-07-31 2008-07-24 Bande de stabilisation renforcee destinee a etre utilisee dans des ouvrages en sol renforce Active EP2171160B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0705580A FR2919631B1 (fr) 2007-07-31 2007-07-31 Bande de stabilisation renforcee destinee a etre utilisee dans des ouvrages en sol renforce
PCT/FR2008/051397 WO2009024700A1 (fr) 2007-07-31 2008-07-24 Bande de stabilisation renforcee destinee a etre utilisee dans des ouvrages en sol renforce

Publications (2)

Publication Number Publication Date
EP2171160A1 EP2171160A1 (fr) 2010-04-07
EP2171160B1 true EP2171160B1 (fr) 2011-04-20

Family

ID=39226590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08827937A Active EP2171160B1 (fr) 2007-07-31 2008-07-24 Bande de stabilisation renforcee destinee a etre utilisee dans des ouvrages en sol renforce

Country Status (10)

Country Link
US (1) US8182177B2 (es)
EP (1) EP2171160B1 (es)
JP (1) JP5073823B2 (es)
KR (1) KR20100071967A (es)
AT (1) ATE506490T1 (es)
BR (1) BRPI0814454B1 (es)
DE (1) DE602008006407D1 (es)
FR (1) FR2919631B1 (es)
MX (1) MX2010001286A (es)
WO (1) WO2009024700A1 (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8632278B2 (en) * 2010-06-17 2014-01-21 T & B Structural Systems Llc Mechanically stabilized earth welded wire facing connection system and method
US8632282B2 (en) * 2010-06-17 2014-01-21 T & B Structural Systems Llc Mechanically stabilized earth system and method
US8734059B2 (en) * 2010-06-17 2014-05-27 T&B Structural Systems Llc Soil reinforcing element for a mechanically stabilized earth structure
US8632280B2 (en) * 2010-06-17 2014-01-21 T & B Structural Systems Llc Mechanically stabilized earth welded wire facing connection system and method
RU2459040C9 (ru) * 2011-02-28 2013-07-20 Закрытое акционерное общество "ПРЕСТО-РУСЬ" Инновационная пространственная полимерная решетка (варианты)
RU2474637C2 (ru) * 2011-02-28 2013-02-10 Закрытое акционерное общество "ПРЕСТО-РУСЬ" Инновационная полимерная лента (варианты) и полоса, изготовленная из нее
FR3016904B1 (fr) * 2014-01-27 2016-02-05 Terre Armee Int Bande de stabilisation renforcee pour ouvrages en remblai renforce avec gaine fonctionnalisee
RU2625058C1 (ru) * 2016-08-26 2017-07-11 Общество с ограниченной ответственностью "Мики" Армированная георешетка и способ ее получения
US10577772B1 (en) * 2019-02-13 2020-03-03 Big R Manufacturing, Llc Soil reinforcing elements for mechanically stabilized earth structures
RU2760449C1 (ru) * 2021-05-21 2021-11-25 Михаил Михайлович Азарх Гибкая полоса из полимерного материала, содержащая армирующие элементы, способ ее изготовления и объемная ячеистая конструкция, выполненная с ее использованием

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FR873354A (fr) 1941-06-26 1942-07-07 Armature métallique pour constructions en béton armé
FR2325778A1 (fr) * 1975-09-26 1977-04-22 Vidal Henri Armature pour ouvrage en terre armee
BE896030A (fr) * 1983-02-25 1983-06-16 Witte Yves De Structure utilisable en genie civil comme materiau stabilisant sol, comme materiau amortisseur de vibrations ou amortisseur acoustique
JPS6096441A (ja) 1983-10-31 1985-05-30 Nippon Denso Co Ltd 樹脂容器に金属部材をこうめる方法及び装置
JPS6096441U (ja) * 1983-12-07 1985-07-01 津田　禎三 補強土
DE3728255A1 (de) * 1987-08-25 1989-03-09 Huesker Synthetic Gmbh & Co Erdankerband
US4960349A (en) * 1988-12-05 1990-10-02 Nicolon Corporation Woven geotextile grid
EP0393013B2 (de) 1989-04-12 1997-06-25 Vorspann-Technik Gesellschaft m.b.H. Spannbündel aus mehreren Spanngliedern
JP3301155B2 (ja) 1993-04-15 2002-07-15 東レ株式会社 土木用シート
JP2968841B2 (ja) * 1993-10-22 1999-11-02 ソシエテ・シビル・デ・ブルベ・アンリ・ビダル 補強土構造に用いるストリップ
ZA963715B (en) * 1995-05-12 1996-11-20 Tensar Corp Bonded composite open mesh structural textiles
US5795835A (en) * 1995-08-28 1998-08-18 The Tensar Corporation Bonded composite knitted structural textiles
AU2672697A (en) * 1996-08-14 1998-03-06 Tensar Corporation, The Bonded composite engineered mesh structural textiles
AU2003289576A1 (en) * 2003-12-30 2005-07-21 Samyang Corporation A geogrid composed of fiber-reinforced polymeric strip and method for producing the same
FR2922235B1 (fr) * 2007-10-16 2009-12-18 Terre Armee Int Bande de stabilisation destinee a etre utilisee dans des ouvrages en sol renforce

Also Published As

Publication number Publication date
EP2171160A1 (fr) 2010-04-07
MX2010001286A (es) 2010-07-30
FR2919631A1 (fr) 2009-02-06
FR2919631B1 (fr) 2013-08-09
WO2009024700A1 (fr) 2009-02-26
KR20100071967A (ko) 2010-06-29
WO2009024700A9 (fr) 2009-04-16
DE602008006407D1 (de) 2011-06-01
US20100254770A1 (en) 2010-10-07
BRPI0814454A2 (pt) 2015-01-06
ATE506490T1 (de) 2011-05-15
BRPI0814454B1 (pt) 2018-12-26
JP5073823B2 (ja) 2012-11-14
JP2010535299A (ja) 2010-11-18
US8182177B2 (en) 2012-05-22

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