WO2023073394A1 - Élément de renforcement pour une structure de sol stabilisée, et structure de sol stabilisée comprenant un tel élément de renforcement - Google Patents

Élément de renforcement pour une structure de sol stabilisée, et structure de sol stabilisée comprenant un tel élément de renforcement Download PDF

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Publication number
WO2023073394A1
WO2023073394A1 PCT/IB2021/000758 IB2021000758W WO2023073394A1 WO 2023073394 A1 WO2023073394 A1 WO 2023073394A1 IB 2021000758 W IB2021000758 W IB 2021000758W WO 2023073394 A1 WO2023073394 A1 WO 2023073394A1
Authority
WO
WIPO (PCT)
Prior art keywords
reinforcement member
strip
shaped element
twisted
soil structure
Prior art date
Application number
PCT/IB2021/000758
Other languages
English (en)
Original Assignee
Soletanche Freyssinet
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 Soletanche Freyssinet filed Critical Soletanche Freyssinet
Priority to PCT/IB2021/000758 priority Critical patent/WO2023073394A1/fr
Publication of WO2023073394A1 publication Critical patent/WO2023073394A1/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

Definitions

  • the reinforcement members allow transmitting forces within the soil material, such that stresses are distributed in the backfill.
  • the geometrical design of certain reinforcement members ensures that friction is sufficient to develop the required shear strength per unit length.
  • the twisted sections along the strip-shaped element provide substantial friction with the backfill material when the strip-shaped element undergoes tension due to the load of backfill material.
  • a constant twist of the strip-shaped element is not convenient for storage and transport of a number of reinforcement members because it does not allow compact stacking of the reinforcement members.
  • By limiting the torsion amplitude and configuring the twisted sections to keep the same face upwards over the length of the reinforcement member it becomes possible to put a number of reinforcement members on top of each other while keeping a compact arrangement. Therefore, a good compromise between mechanical properties and convenience of transport and storage is achieved.
  • the strip-shaped element has a torsion angle in a range of 0° to 90°. between two longitudinal ends of each twisted section.
  • Twisted sections may follow each other along the longitudinal axis of the strip- shaped element, with consecutive twisted sections being twisted in opposite directions.
  • It may have a width in a range of 20 mm to 100 mm. Its thickness may be in a range of 2 mm to 5 mm, preferably 3 to 4 mm.
  • the strip-shaped element may be configured as a twisted continuous plate, or as a twisted ladder.
  • a stabilized soil structure comprises a backfill, a facing extending at a front surface of the backfill, and at least one reinforcement member as defined above, extending in the backfill and connected to the facing.
  • FIG. 1 is a schematic side sectional view of an example of reinforced soil structure according to the invention.
  • Fig. 2 is a top view, i.e. from a direction Z, of a reinforcement member according to an embodiment of the invention.
  • Fig. 4 is a perspective view of the reinforcement member of Fig. 2.
  • Fig. 1 The construction work shown by way of illustration in Fig. 1 is a mechanically stabilized soil structure 1. It includes a backfill 2 delimited on the front side by a facing 3 formed by juxtaposing prefabricated facing elements 4, and on the rear side by the soil 5 against which the stabilized soil structure 1 is erected.
  • the strip-shaped element 11 has twisted sections 14i, 142 distributed along its length.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

L'élément de renforcement pour une structure de sol stabilisée comprend un élément en forme de bande (11) s'étendant le long d'un axe longitudinal (A) et ayant une face supérieure (12) et une face inférieure (13) parallèle à la face supérieure (12). L'élément en forme de bande (11) présente des sections torsadées (14i) réparties le long de l'axe longitudinal (A) et configurées de telle sorte que, lors de l'observation de l'élément en forme de bande à partir d'une première direction (Z) perpendiculaire à l'axe longitudinal (A), la face supérieure (12) est visible tandis que la face inférieure (13) est invisible.
PCT/IB2021/000758 2021-10-29 2021-10-29 Élément de renforcement pour une structure de sol stabilisée, et structure de sol stabilisée comprenant un tel élément de renforcement WO2023073394A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2021/000758 WO2023073394A1 (fr) 2021-10-29 2021-10-29 Élément de renforcement pour une structure de sol stabilisée, et structure de sol stabilisée comprenant un tel élément de renforcement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2021/000758 WO2023073394A1 (fr) 2021-10-29 2021-10-29 Élément de renforcement pour une structure de sol stabilisée, et structure de sol stabilisée comprenant un tel élément de renforcement

Publications (1)

Publication Number Publication Date
WO2023073394A1 true WO2023073394A1 (fr) 2023-05-04

Family

ID=79021723

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2021/000758 WO2023073394A1 (fr) 2021-10-29 2021-10-29 Élément de renforcement pour une structure de sol stabilisée, et structure de sol stabilisée comprenant un tel élément de renforcement

Country Status (1)

Country Link
WO (1) WO2023073394A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351229A2 (fr) * 1988-07-15 1990-01-17 Helix Reinforcements Limited Renforcement des sols
US5890843A (en) 1993-10-22 1999-04-06 Societe Civile Des Brevets Henri Vidal Strip for use in stabilized earth structures and method of making same
WO2007086634A1 (fr) * 2006-01-24 2007-08-02 Jeung Su Lee Armature de fibres en forme de bande pour mur en terre armée, et procédé d'installation associé
US20100092249A1 (en) * 2007-03-05 2010-04-15 Terre Armee Internationale Ground reinforced structure and reinforcement members for the construction thereof
US20110044771A1 (en) * 2008-03-04 2011-02-24 Terre Armee Internationale Flexible stabilizing strip intended to be used in reinforced soil constructions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351229A2 (fr) * 1988-07-15 1990-01-17 Helix Reinforcements Limited Renforcement des sols
US5890843A (en) 1993-10-22 1999-04-06 Societe Civile Des Brevets Henri Vidal Strip for use in stabilized earth structures and method of making same
WO2007086634A1 (fr) * 2006-01-24 2007-08-02 Jeung Su Lee Armature de fibres en forme de bande pour mur en terre armée, et procédé d'installation associé
US20100092249A1 (en) * 2007-03-05 2010-04-15 Terre Armee Internationale Ground reinforced structure and reinforcement members for the construction thereof
US20110044771A1 (en) * 2008-03-04 2011-02-24 Terre Armee Internationale Flexible stabilizing strip intended to be used in reinforced soil constructions

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