WO2009082077A1 - Cellular reinforcement for soil particle confinement - Google Patents

Cellular reinforcement for soil particle confinement Download PDF

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Publication number
WO2009082077A1
WO2009082077A1 PCT/KR2008/004565 KR2008004565W WO2009082077A1 WO 2009082077 A1 WO2009082077 A1 WO 2009082077A1 KR 2008004565 W KR2008004565 W KR 2008004565W WO 2009082077 A1 WO2009082077 A1 WO 2009082077A1
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WIPO (PCT)
Prior art keywords
reinforcement
cellular
welding
soil particle
cords
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.)
Ceased
Application number
PCT/KR2008/004565
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French (fr)
Inventor
Jin Sup Shin
Jung Jo Yuu
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.)
GOLDEN-POW Co Ltd
GOLDEN POW Co Ltd
Original Assignee
GOLDEN-POW Co Ltd
GOLDEN POW Co Ltd
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Priority to AU2008341376A priority Critical patent/AU2008341376B2/en
Priority to CN2008800095254A priority patent/CN101641479B/en
Priority to JP2009554462A priority patent/JP4688958B2/en
Priority to EP08793079.8A priority patent/EP2158365A4/en
Priority to US12/531,108 priority patent/US20100104367A1/en
Application filed by GOLDEN-POW Co Ltd, GOLDEN POW Co Ltd filed Critical GOLDEN-POW Co Ltd
Priority to BRPI0808931-0A2A priority patent/BRPI0808931A2/en
Priority to CA002680850A priority patent/CA2680850A1/en
Publication of WO2009082077A1 publication Critical patent/WO2009082077A1/en
Priority to EG2009111715A priority patent/EG26447A/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/16—Reinforcements
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/40—Miscellaneous comprising stabilising elements

Definitions

  • the present invention relates to a cellular reinforcement for soil particle confinement which is used for environment- friendly protection of a slope and an embankment or for forming the base of a retaining wall, revetment, road, etc., and more particularly, it is formed by interlacing transverse reinforcement cords and longitudinal reinforcement cords with each other to form a netlike sheet having openings of a preset size and by fusion- splicing the sheets formed in this way in a widthwise direction.
  • This confers advantages in that a high coefficient of permeability is obtained, the frictional force with the aggregate is increased, and thus material can be saved to decrease the manufacturing cost. Also, easy root formation is ensured, and the load acting upon the application of compressive stress is dispersed to prevent the deformation of the cellular reinforcement, whereby the ground can be stabilized.
  • a conventional construction of a reinforcement for protecting a slope or an embankment includes band-shaped sheets 100 which are made of polyethylene and have a preset length. These sheets 100 are superposed upon and coupled with one another through ultrasonic welding. Then, by pulling the resultant structure in both directions, a cellular reinforcement for soil particle confinement is formed to have the shape of a cellular net.
  • holes 200 are subsequently punched through the sheets 100 in situ by a worker using a puncher so as to increase the coefficient of permeability of the cellular reinforcement to some extent.
  • the conventional cellular reinforcement has drawbacks in that it has a low coefficient of permeability and small frictional force with respect to a filler, costly equipment is needed to manufacture it, the manufacturing cost increases, easy root formation is not ensured, and the deformation of the sheets 100 occurs upon application of a compressive load, whereby the ground can be made unstable. Disclosure of Invention
  • the present invention has been made in an effort to solve the problems and an object of the present invention is to provide a cellular reinforcement for soil particle confinement which is formed by interlacing transverse reinforcement cords and longitudinal reinforcement cords with each other to form a netlike sheet having openings of a preset size and by fusion-splicing the sheets formed in this way in a widthwise direction.
  • Advantages conferred include obtaining a high coefficient of permeability, increasing the frictional force with aggregate, saving material, thus decreasing the manufacturing cost, ensuring easy root formation, and finally dispersing the load acting upon application of compressive stress to prevent the deformation of the cellular reinforcement, so that the ground can be stabilized.
  • the present invention provides a cellular reinforcement for soil particle confinement.
  • Transverse reinforcement cords and longitudinal reinforcement cords are interlaced with each other to form a netlike sheet having openings of a preset size, and after fusion- welding sheets formed in this way at regular intervals in a widthwise direction, a plurality of honeycombed cell nets is formed by pulling a resultant structure in both directions.
  • the cellular reinforcement for soil particle confinement by the present invention is formed by interlacing transverse reinforcement cords and longitudinal reinforcement cords with each other to form a netlike sheet having openings of a preset size and by fusion-splicing the sheets formed in this way in a widthwise direction. Due to this fact, the present invention confers advantages in that a high coefficient of permeability is obtained, the frictional force with aggregate is increased, material can be saved to thus decrease the manufacturing cost, easy root formation is ensured, and the load acting upon the application of compressive stress is dispersed to thus prevent the deformation of the cellular reinforcement, whereby the ground can be stabilized.
  • FIGs. 1 and 2 are perspective views illustrating a conventional reinforcement made of high density polyethylene
  • FIG. 3 is a perspective view illustrating a cellular reinforcement for soil particle confinement in accordance with an embodiment of the present invention
  • FIG. 4 is a partial perspective view illustrating the structure of a honeycombed cell net which constitutes the cellular reinforcement for soil particle confinement according to the present invention
  • FIG. 5 is a partial front view illustrating the structure of a sheet which forms the honeycombed cell net according to the present invention
  • FIG. 6 is a graph illustrating the relationship between displacement and shear stress in the conventional reinforcement made of high density polyethylene
  • FIG. 7 is a graph illustrating the relationship between normal stress and maximum shear stress in the conventional reinforcement made of high density polyethylene
  • FIG. 8 is a graph illustrating the relationship between displacement and shear stress in the cellular reinforcement for soil particle confinement according to the present invention.
  • FIG. 9 is a graph illustrating the relationship between normal stress and maximum shear stress in the cellular reinforcement for soil particle confinement according to the present invention.
  • FIG. 3 is a perspective view illustrating a cellular reinforcement for soil particle confinement in accordance with an embodiment of the present invention
  • FIG. 4 is a partial perspective view illustrating the structure of a honeycombed cell net which constitutes the cellular reinforcement for soil particle confinement according to the present invention
  • FIG. 5 is a partial front view illustrating the structure of a sheet which forms the honeycombed cell net according to the present invention.
  • transverse reinforcement cords 10 and longitudinal reinforcement cords 20 which are made of polyethylene and have a preset length, are interlaced with each other to form a netlike sheet 40 having a plurality of openings 30 of a preset size.
  • the interlacing pattern of the transverse reinforcement cords 10 and the longitudinal reinforcement cords 20 can be changed between +, x and * shapes.
  • the sheets 40 are connected with one another at regular intervals in the widthwise direction thereof through fusion welding.
  • the fusion welding can be conducted as ultrasonic welding, hot melt welding, hot wedge welding, hot air welding, etc.
  • Experiment method a shear test [33] Experiment condition: [34] Upper part weathered soil [35] Lower part reinforcement made of high density polyethylene [36] [37] [Table 2] [38] [39]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Architecture (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Revetment (AREA)

Abstract

A cellular reinforcement for soil particle confinement. Transverse reinforcement cords and longitudinal reinforcement cords are interlaced with each other to form a netlike sheet having openings of a preset size, and after fusion-welding the sheets formed in this way at regular intervals in a widthwise direction, by pulling a resultant structure in both directions, a plurality of honeycombed cell nets is formed.

Description

Description
CELLULAR REINFORCEMENT FOR SOIL PARTICLE CONFINEMENT
Technical Field
[1] The present invention relates to a cellular reinforcement for soil particle confinement which is used for environment- friendly protection of a slope and an embankment or for forming the base of a retaining wall, revetment, road, etc., and more particularly, it is formed by interlacing transverse reinforcement cords and longitudinal reinforcement cords with each other to form a netlike sheet having openings of a preset size and by fusion- splicing the sheets formed in this way in a widthwise direction. This confers advantages in that a high coefficient of permeability is obtained, the frictional force with the aggregate is increased, and thus material can be saved to decrease the manufacturing cost. Also, easy root formation is ensured, and the load acting upon the application of compressive stress is dispersed to prevent the deformation of the cellular reinforcement, whereby the ground can be stabilized. Background Art
[2] In general, erosion and caving are likely to occur on slopes and embankments and deformation occurs easily in soft ground since the support force of a base is insufficient to withstand the load of a structure. Therefore, in the case of forming a slope or building an embankment, in order to prevent erosion and caving, a reinforcement should be installed. Also, in the case of building a bank or a road on a soft ground, in order to increase the support force of the ground and prevent the subsidence of the ground, a reinforcement should be placed.
[3] Referring to FIG. 1, a conventional construction of a reinforcement for protecting a slope or an embankment includes band-shaped sheets 100 which are made of polyethylene and have a preset length. These sheets 100 are superposed upon and coupled with one another through ultrasonic welding. Then, by pulling the resultant structure in both directions, a cellular reinforcement for soil particle confinement is formed to have the shape of a cellular net.
[4] Referring to FIG. 2, after producing the cellular reinforcement for soil particle confinement, holes 200 are subsequently punched through the sheets 100 in situ by a worker using a puncher so as to increase the coefficient of permeability of the cellular reinforcement to some extent.
[5] However, the conventional cellular reinforcement has drawbacks in that it has a low coefficient of permeability and small frictional force with respect to a filler, costly equipment is needed to manufacture it, the manufacturing cost increases, easy root formation is not ensured, and the deformation of the sheets 100 occurs upon application of a compressive load, whereby the ground can be made unstable. Disclosure of Invention
Technical Problem
[6] Accordingly, the present invention has been made in an effort to solve the problems and an object of the present invention is to provide a cellular reinforcement for soil particle confinement which is formed by interlacing transverse reinforcement cords and longitudinal reinforcement cords with each other to form a netlike sheet having openings of a preset size and by fusion-splicing the sheets formed in this way in a widthwise direction. Advantages conferred include obtaining a high coefficient of permeability, increasing the frictional force with aggregate, saving material, thus decreasing the manufacturing cost, ensuring easy root formation, and finally dispersing the load acting upon application of compressive stress to prevent the deformation of the cellular reinforcement, so that the ground can be stabilized. Technical Solution
[7] In order to achieve the above object, the present invention provides a cellular reinforcement for soil particle confinement. Transverse reinforcement cords and longitudinal reinforcement cords are interlaced with each other to form a netlike sheet having openings of a preset size, and after fusion- welding sheets formed in this way at regular intervals in a widthwise direction, a plurality of honeycombed cell nets is formed by pulling a resultant structure in both directions.
Advantageous Effects
[8] Thanks to the above features, the cellular reinforcement for soil particle confinement by the present invention is formed by interlacing transverse reinforcement cords and longitudinal reinforcement cords with each other to form a netlike sheet having openings of a preset size and by fusion-splicing the sheets formed in this way in a widthwise direction. Due to this fact, the present invention confers advantages in that a high coefficient of permeability is obtained, the frictional force with aggregate is increased, material can be saved to thus decrease the manufacturing cost, easy root formation is ensured, and the load acting upon the application of compressive stress is dispersed to thus prevent the deformation of the cellular reinforcement, whereby the ground can be stabilized. Brief Description of the Drawings
[9] The above objects and other features and advantages of the present invention will become more apparent after a reading of the following detailed description taken in conjunction with the drawings, in which:
[10] FIGs. 1 and 2 are perspective views illustrating a conventional reinforcement made of high density polyethylene;
[11] FIG. 3 is a perspective view illustrating a cellular reinforcement for soil particle confinement in accordance with an embodiment of the present invention;
[12] FIG. 4 is a partial perspective view illustrating the structure of a honeycombed cell net which constitutes the cellular reinforcement for soil particle confinement according to the present invention;
[13] FIG. 5 is a partial front view illustrating the structure of a sheet which forms the honeycombed cell net according to the present invention;
[14] FIG. 6 is a graph illustrating the relationship between displacement and shear stress in the conventional reinforcement made of high density polyethylene;
[15] FIG. 7 is a graph illustrating the relationship between normal stress and maximum shear stress in the conventional reinforcement made of high density polyethylene;
[16] FIG. 8 is a graph illustrating the relationship between displacement and shear stress in the cellular reinforcement for soil particle confinement according to the present invention; and
[17] FIG. 9 is a graph illustrating the relationship between normal stress and maximum shear stress in the cellular reinforcement for soil particle confinement according to the present invention. Mode for the Invention
[18] Reference will now be made in greater detail to a preferred embodiment of the invention, an example of which is illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings and the description to refer to the same or like parts.
[19] FIG. 3 is a perspective view illustrating a cellular reinforcement for soil particle confinement in accordance with an embodiment of the present invention, FIG. 4 is a partial perspective view illustrating the structure of a honeycombed cell net which constitutes the cellular reinforcement for soil particle confinement according to the present invention, and FIG. 5 is a partial front view illustrating the structure of a sheet which forms the honeycombed cell net according to the present invention.
[20] As shown in FIGs. 3 through 5, in a cellular reinforcement 1 for soil particle confinement in accordance with an embodiment of the present invention, transverse reinforcement cords 10 and longitudinal reinforcement cords 20, which are made of polyethylene and have a preset length, are interlaced with each other to form a netlike sheet 40 having a plurality of openings 30 of a preset size. At this time, as the occasion demands, the interlacing pattern of the transverse reinforcement cords 10 and the longitudinal reinforcement cords 20 can be changed between +, x and * shapes.
[21] When sheets 40 are formed in this way, the sheets 40 are connected with one another at regular intervals in the widthwise direction thereof through fusion welding. At this time, the fusion welding can be conducted as ultrasonic welding, hot melt welding, hot wedge welding, hot air welding, etc.
[22] With the sheets 40 connected with one another at regular intervals, they are to be fusion- welded with other adjoining sheets. Fusion welding is performed on the middle portions of the connected sheets 40 such that fusion- welded points do not overlap.
[23] With a plurality of sheets 40 fusion- welded in this way, by pulling the resultant structure in both directions, a plurality of honeycombed cell nets 50 is formed. [24] In the state in which the plurality of sheets is fusion- welded at regular intervals as described above and the plurality of honeycombed cell nets 50 is formed, aggregate including sand, soil, gravel, etc. can be placed in them. At this time, since a large number of openings 30 is formed uniformly over all surfaces of the sheets 40 constituting the honeycombed cell nets 50, even without subsequently conducting a separate process, advantages can be conferred in that a friction characteristic can be improved, material savings of over 20% can be realized compared to the conventional cellular reinforcement using band-shaped sheets, weight is reduced, and easy root formation can be ensured.
[25] By performing experiments for the cellular reinforcement 1 for soil particle confinement according to the present invention, constructed as described above, and the conventional reinforcement for protection of a slope made of high density polyethylene, as shown in FIG. 1, through shear tests, the results as given in the following tables were obtained.
[26] Experiment method: a shear test [27] Experiment condition: [28] Upper part weathered soil [29] Lower part reinforcement made of high density polyethylene [30] [Table 1] [31]
Figure imgf000006_0001
[32] Experiment method: a shear test [33] Experiment condition: [34] Upper part weathered soil [35] Lower part reinforcement made of high density polyethylene [36] [37] [Table 2] [38] [39]
Figure imgf000007_0001
[40] The graphs illustrating relationships between displacement and shear stress according to the application of normal stress and between normal stress and maximum shear stress as given in Table 1 in the conventional reinforcement made of high density polyethylene are respectively shown in FIGs. 6 and 7. Also, the graphs illustrating relationships between displacement and shear stress according to the application of normal stress and between normal stress and maximum shear stress as given in Table 2 in the cellular reinforcement for soil particle confinement according to the present invention are respectively shown in FIGs. 8 and 9.
[41] From these graphs, it is to be readily understood that, in the cellular reinforcement for soil particle confinement according to the present invention, a friction characteristic is improved by about 50% and adhesion strength is increased to about 9 times compared to the conventional reinforcement made of high density polyethylene.
[42] Moreover, as can be seen from FIG. 3, due to the fact that the ends of the transverse reinforcement cords 10 and the longitudinal reinforcement cords 20 project sharply, the ends of the transverse reinforcement cords 10 and the longitudinal reinforcement cords 20 can be driven into the ground so that fastening force and frictional force can be increased, whereby the cellular reinforcement 1 for soil particle confinement according to the present invention can be stably installed.
[43] Although a preferred embodiment of the present invention has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

Claims
[1] A cellular reinforcement for soil particle confinement, wherein transverse reinforcement cords and longitudinal reinforcement cords are interlaced with each other to form a netlike sheet having openings of a preset size and then after fusion- welding sheets formed in this way at regular intervals in a widthwise direction, a plurality of honeycombed cell nets is formed by pulling a resultant structure in both directions.
[2] The cellular reinforcement according to claim 1, wherein an interlacing pattern of the transverse reinforcement cords and the longitudinal reinforcement cords is selected from among shapes of +, x and *.
[3] The cellular reinforcement according to claim 1, wherein the fusion welding is selected from among ultrasonic welding, hot melt welding, hot wedge welding, and hot air welding.
[4] The cellular reinforcement according to claim 1, wherein widthwise ends of the transverse reinforcement cords and the longitudinal reinforcement cords are formed to be sharp.
PCT/KR2008/004565 2007-12-20 2008-08-06 Cellular reinforcement for soil particle confinement Ceased WO2009082077A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CA002680850A CA2680850A1 (en) 2007-12-20 2008-08-06 Cellular reinforcement for soil particle confinement
CN2008800095254A CN101641479B (en) 2007-12-20 2008-08-06 Cellular reinforcement for soil particle confinement
JP2009554462A JP4688958B2 (en) 2007-12-20 2008-08-06 Honeycomb reinforcement for soil particle restraint
EP08793079.8A EP2158365A4 (en) 2007-12-20 2008-08-06 Cellular reinforcement for soil particle confinement
US12/531,108 US20100104367A1 (en) 2007-12-20 2008-08-06 Cellular reinforcement for soil particle confinement
AU2008341376A AU2008341376B2 (en) 2007-12-20 2008-08-06 Cellular reinforcement for soil particle confinement
BRPI0808931-0A2A BRPI0808931A2 (en) 2007-12-20 2008-08-06 Cellular reinforcement for soil particle confinement
EG2009111715A EG26447A (en) 2007-12-20 2009-11-22 Cellular reinforcement for soil particle confinement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0134077 2007-12-20
KR1020070134077A KR100834784B1 (en) 2007-12-20 2007-12-20 Masonry restraint honeycomb stiffener

Publications (1)

Publication Number Publication Date
WO2009082077A1 true WO2009082077A1 (en) 2009-07-02

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PCT/KR2008/004565 Ceased WO2009082077A1 (en) 2007-12-20 2008-08-06 Cellular reinforcement for soil particle confinement

Country Status (11)

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US (1) US20100104367A1 (en)
EP (1) EP2158365A4 (en)
JP (1) JP4688958B2 (en)
KR (1) KR100834784B1 (en)
CN (1) CN101641479B (en)
AU (1) AU2008341376B2 (en)
BR (1) BRPI0808931A2 (en)
CA (1) CA2680850A1 (en)
EG (1) EG26447A (en)
RU (1) RU2426831C2 (en)
WO (1) WO2009082077A1 (en)

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KR100933428B1 (en) * 2008-11-06 2009-12-23 주식회사 골든포우 Construction method of masonry restraint honeycomb reinforcement
KR101093673B1 (en) * 2009-02-06 2011-12-15 주식회사 대한아이엠 Soft Ground Reinforcement
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CN101641479B (en) 2011-05-04
JP4688958B2 (en) 2011-05-25
KR100834784B1 (en) 2008-06-10
AU2008341376A1 (en) 2009-07-02
RU2426831C2 (en) 2011-08-20
EP2158365A4 (en) 2013-10-23
AU2008341376B2 (en) 2010-10-21
RU2009133835A (en) 2011-06-27
US20100104367A1 (en) 2010-04-29
EP2158365A1 (en) 2010-03-03

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