EP1256660A1 - Méthode de stabilisation des talus - Google Patents

Méthode de stabilisation des talus Download PDF

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Publication number
EP1256660A1
EP1256660A1 EP02013855A EP02013855A EP1256660A1 EP 1256660 A1 EP1256660 A1 EP 1256660A1 EP 02013855 A EP02013855 A EP 02013855A EP 02013855 A EP02013855 A EP 02013855A EP 1256660 A1 EP1256660 A1 EP 1256660A1
Authority
EP
European Patent Office
Prior art keywords
front grid
embankment
anchor
grid
anchor element
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.)
Withdrawn
Application number
EP02013855A
Other languages
German (de)
English (en)
Inventor
Fin G. Laursen
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.)
Byggros AS
Original Assignee
Byggros AS
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 Byggros AS filed Critical Byggros AS
Publication of EP1256660A1 publication Critical patent/EP1256660A1/fr
Withdrawn legal-status Critical Current

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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
    • E02D17/18—Making embankments, e.g. dikes, dams
    • 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

Definitions

  • This invention concerns a method for constructing a steep embankment or slope.
  • various techniques are known for building steep slopes.
  • the known techniques stem from the wish to achieve stable slopes since, in many cases, for construction purposes or traffic related reasons it is necessary to execute a given embankment so steep that the embankment cannot be constructed solely with earth or gravel materials and would not in itself be stable enough to resist erosion for a longer period of time. Particularly it cannot resist erosion due to precipitation, including rain showers, the effects of melting water etc.
  • Such an embankment must furthermore in certain cases fulfil specific requirements or wishes with regard to appearance, including vegetation, stone kerbing, wooden or facade coating.
  • An object of the present invention is to achieve a technique which eliminates the aforesaid drawback in the prior art, and particularly enables a more flexible adaptation and construction of an embankment on site and at the same time enables the construction of an embankment using a universal set of elements which may be produced with universal dimensions and combined on site according to a given required embodiment, i.e. corresponding to the embankment to be constructed.
  • the basis of this invention is the recognition that by using a planar grid constituting a planar front grid in the completed embankment, an anchor element which consists of an anchorage grid, an anchor peg or an anchor block as well as one or more anchorage braces or struts, a reinforcement may be constructed in an embankment, it being possible to construct said reinforcement on site and adapt it to the given specifications and requirements, including ad hoc adjustment.
  • a reinforcement may be constructed in an embankment, it being possible to construct said reinforcement on site and adapt it to the given specifications and requirements, including ad hoc adjustment.
  • Erecting of the front grid according to the method of the invention may take place in any suitable way, including fixing of the front grid by means of anchoring pegs driven down at the bottom edge of the front grid once it has been raised to the desired inclination in relation to horizontal and possibly temporarily supported and fixed by means of temporary anchor struts or the like.
  • a stable securing of the front grid is carried out by digging a trench prior to or during the erection of the planar front grid and erecting and securing the planar front grid in said trench using sand, gravel, concrete or a mixture thereof.
  • the method according to this invention preferably further comprises a step wherein one or more layers of geo-net and one or more layers of geo-textiles which may be mutually interconnected or placed overlapping one another under or above the anchor element as well as preferably behind the front grid.
  • the front grid may constitute a component left in place after construction of the embankment and, depending on the specific use, it may be made from corrosion-resistant material or alternatively from non corrosion-resistant material. If the front grid is to remain intact as a reinforcement element in the embankment even after a long span of years, the front grid must naturally be made from corrosion-resistant material. In case of subsequent planting and thereby so to say natural reinforcement of the embankment built according to the method of the invention the front grid may be made from non corrosion-resistant material, the front grid corroding away after a period of time.
  • the method may, according to an alternative embodiment, further comprise the final step of removing the front grid after construction of the finished embankment, including any planting on the completed embankment.
  • the method of building steep embankments in earth comprises the digging of a trench 1 having a depth and a width of approximately 30 cm for receiving and securing a front grid 2 at an angle corresponding to that of the completed embankment.
  • the front grid 2 is a per se conventional reinforcement grid made of iron, steel, aluminium or other suitable material or a combination thereof.
  • the front grid may be corrosion resistant in order to impede the decay of the front grid over time or, as an alternative, it may constitute a non corrosion resistant breakable front grid which deliberately decays within a shorter or longer period of time after the embankment has been established.
  • the front grid has a mesh size varying according to the given use between 5 and 50 cm, typically 10-20 cm, like 15 cm.
  • a temporary bracing 3 Sand, gravel, concrete or a mixture thereof is poured into the trench 1 for securing the front grid 2, and the inclination thereof is stabilized by anchoring on the side where the earth reinforcement is to made by means of two anchor braces or struts 4a and 4b.
  • the anchor braces or struts 4a and 4b are fixed in the ground by means of a fixing peg or bracket 6 and at the other and they are fixed at the front grid 2 on the same sloping grid line so that the anchor brace or strut 4b is lying on the ground, that the brace or strut 4a forms an angle ⁇ less than 90° with the inclined plane of the front grid 2 and that the point of fixture at the front grid is situated at a height less that 0,5 m.
  • the anchor brace or strut 4b may be secured closer to the front grid but preferably on the same ground projection line of the anchor brace or strut 4a and at an angle ⁇ with the front-grid normally smaller than the angle ⁇ .
  • the anchor braces or struts are also secured by means of the fixing peg to an anchor element 5 in such a manner that the combined translatory and rotary movement of the anchor braces or struts 4a and 4b is prevented by the resistance of the anchor element 5.
  • the anchor element 5 (which may be an anchor grid as in fig. 1, an anchor peg as in fig. 2 or an anchor block as in fig. 3) is placed at a certain distance in the longitudinal direction from the grid, typically a distance of 1-5 m, like 1-3 m, preferably about 1 m. Even though the anchor braces or struts 4a and 4b in fig. 1 are shown secured by means of the fixing peg 6, the anchor braces or struts 4a and 4b may, as an alternative, be secured directly to the anchor element 5.
  • the position of the anchor braces or struts 4a and 4b with relation to the anchor grid 5 and the front grid 2 may be changed according to the given use and that according to the given use, a varying number of anchor braces or struts may be used in connection with a front grid depending on the given circumstances, including especially the angle or inclination of the front grid in relation to horizontal and the given soil conditions.
  • Fig. 2 is a schematic perspective view of a first alternative embodiment of a method and system according to the present invention similar to the preferred embodiment shown in fig. 1, but with the front grid 2 anchored by means of anchor pegs 5.
  • Fig. 3 is a schematic perspective view of a second alternative embodiment of a method according to the present invention similar to the first alternative embodiment shown in fig. 2, but with the front grid 2 anchored by means of anchor blocks 5.
  • Fig. 4 shows a schematic cross-section view of a steep embankment built by repetition of the method described above with reference to fig. 1.
  • steps are carried out:
  • the steps a-h are repeated until the height of the structure corresponds to the desired height of the embankment and it may be covered by the material chosen to serve the desired purpose, e.g asphalt -for road construction- or trees and/or bushes -to prevent landslides.
  • reinforcement material 7 may instead be used steel net, the mesh size and dimensions of which may vary according to the design.
  • the plant mat 8 may be a biodegradable coir mat or a geo-textile which is positioned immediately behind the facade of the wall and has the purpose of holding back top soil and which is built into the front of the embankment and of ensuring that the subsequent sowing is bound to the embankment.
  • Special mats of mineral wool may also optionally be used.
  • Fig. 5 is a schematic cross-section view of a steep embankment having a displaced front and being built in accordance with the method according to the present invention.
  • the construction of the steep embankment is initiated in the same way as the construction of the embankment shown in fig. 4, but each time the construction of an individual section of the displaced front is started, a new front grid 2' (possibly 2", 2"' etc. not shown in the figure) is positioned at a distance from and rearwardly displaced with respect to the front grid 2.
  • the layer of reinforcing material 7 is countersunk for a distance behind the front grid 2 and dug down at the position where the second front grid 2' is to be installed.
  • Fig. 6 is a schematic cross-section view of a steep embankment built according to the method of the present invention and having a set back reinforcement net 7 and stonework 9.
  • the principle of construction is like the principle described in connection with fig. 5; but the reinforcement net 7, however, is placed at a distance from the front grid 2 to provide space between the front grid 2 and the reinforcement net 7 for filling up with stones simultaneously with the other side of the reinforcement net 7 is filled with earth.
  • Fig. 7 is a schematic cross-section view built up in accordance with the method of the present invention and having an outer coating 10 which is secured by means of brackets 11, which again are anchored in the embankment by means of a number of anchor braces or struts 12.
  • the embankment is otherwise constructed equivalently to the embankment described above with reference to fig. 5, however, without a displaced front.
  • an embankment is established in a simple way by means of universally applicable elements, a front grid, an anchor element, a number of anchor braces or struts and one or more layers of geo-net or one or more layers of geo-textiles, said embankment having any inclination and being designed with any desired outward appearance, including planting, coating etc.
  • the technique according to the present invention does not set out any specific requirements as to the design of especially configured components such as especially designed support grids, and the erection of the reinforcement system according to the present invention may be carried out according to the given conditions on a plane or slightly sloping ground and may furthermore be directly integrated with already existing facilities.
  • the front grid may be removed after construction of the embankment or alternatively be left within the embankment for subsequent corrosion or alternatively it may serve as formwork during the construction of a coating.
  • the front grid may furthermore serve as protection against malicious damage, vandalism, erosion etc. for a long span of years.
  • the stability of the embankment is secured by the remaining reinforcement elements, including the anchor element, the geo-nets or the geo-textiles.
  • a facade coating may be designed in the form of stonework, whereupon the reinforcement material should not be visible and this is facilitated by erecting the reinforcement material at a distance behind the front of the completed embankment, whereby the front grid serves to determine the overall stability of the embankment and consequently should be constructed of corrosion-resistant material.
  • the technique according to the present invention may furthermore be used for construction of dams and coast protection installations or other similar safety installations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (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)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Tents Or Canopies (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Hydrogenated Pyridines (AREA)
  • Building Environments (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Piles And Underground Anchors (AREA)
  • Paper (AREA)
  • Indole Compounds (AREA)
  • Photoreceptors In Electrophotography (AREA)
EP02013855A 1996-05-10 1997-05-07 Méthode de stabilisation des talus Withdrawn EP1256660A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK56396 1996-05-10
DK056396A DK56396A (da) 1996-05-10 1996-05-10 Fremgangsmåde til opbygning af en stejl skråning, system til brug ved opbygning af den stejle skråning og en sådan skråning
EP97921634A EP0897435B1 (fr) 1996-05-10 1997-05-07 Procede de construction d'une digue inclinee

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP97921634A Division EP0897435B1 (fr) 1996-05-10 1997-05-07 Procede de construction d'une digue inclinee

Publications (1)

Publication Number Publication Date
EP1256660A1 true EP1256660A1 (fr) 2002-11-13

Family

ID=8094960

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02013855A Withdrawn EP1256660A1 (fr) 1996-05-10 1997-05-07 Méthode de stabilisation des talus
EP97921634A Expired - Lifetime EP0897435B1 (fr) 1996-05-10 1997-05-07 Procede de construction d'une digue inclinee

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP97921634A Expired - Lifetime EP0897435B1 (fr) 1996-05-10 1997-05-07 Procede de construction d'une digue inclinee

Country Status (8)

Country Link
EP (2) EP1256660A1 (fr)
AT (1) ATE229110T1 (fr)
AU (1) AU2763697A (fr)
DE (1) DE69717619T2 (fr)
DK (2) DK56396A (fr)
NO (1) NO320078B1 (fr)
PL (1) PL183988B1 (fr)
WO (1) WO1997043489A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH692706A5 (de) * 1998-01-26 2002-09-30 Sytec Bausysteme Ag Schalungsgitter zur Stützung von Böschungen.
CH692921A5 (de) * 1998-02-25 2002-12-13 Fatzer Ag Drahtgeflecht vorzugsweise als Steinschlagschutz oder für die Sicherung einer Erdoberflächenschicht.
WO2000022242A1 (fr) * 1998-10-13 2000-04-20 Rüegger Systeme Ag Ingenieurlösungen In Der Geotechnik Construction realisee contre une paroi en terre, a façade en pente, et son procede de realisation
AU6457799A (en) * 1998-11-20 2000-06-13 Sytec Bausysteme Ag Support wall system
ES2155773B1 (es) * 1999-02-24 2001-12-01 Antonio Casado Y Cia S A "dispositivo para la construccion de bancales en terrenos con pendiente".
DE19922670A1 (de) * 1999-05-18 2000-11-23 Huesker Synthetic Gmbh & Co Verfahren zur Herstellung einer begrünbaren Außenhaut einer Erdböschung
ITFG20040006A1 (it) * 2004-11-26 2005-02-26 Geom Ciro Frisoli & C S A S Muri ed argini in rifiuti rinforzati 2°
JP6800559B2 (ja) * 2014-12-09 2020-12-16 矢作建設工業株式会社 石積擁壁の補強構造及び石積擁壁の補強方法
CN116356763A (zh) * 2023-01-04 2023-06-30 泗洪县水利工程建设管理中心 滞洪区堤坝加固结构及加固方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8326632U1 (de) * 1983-09-16 1985-08-29 Wrede, Werner, 5500 Trier Gittersatz zur Bildung einer Böschungsbefestigung
US4952098A (en) * 1989-12-21 1990-08-28 Ivy Steel Products, Inc. Retaining wall anchor system
CH683434A5 (de) * 1991-06-11 1994-03-15 Hermann Claus Verkehrswegesanierung an abrutschgefährdeten Hanglagen.
WO1995000712A1 (fr) * 1993-06-24 1995-01-05 Societe Civile Des Brevets Henri Vidal Structures en terre
WO1995006784A1 (fr) * 1993-08-30 1995-03-09 The Reinforced Earth Company Terrassement a façade en treillis metallique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1257042B (it) * 1992-06-10 1996-01-05 Procedimento per la formazione di scarpate verdeggianti in terra rinforzata e prodotto ottenuto con tale procedimento
JP2545197B2 (ja) * 1993-10-20 1996-10-16 強化土エンジニヤリング株式会社 補強土構造
GB9417413D0 (en) * 1994-08-30 1994-10-19 Appleton Samuel A Slope reinforcing structure and method
GB9418994D0 (en) * 1994-09-19 1994-11-09 Vidal Henri Brevets Facing panel for earth structures
NO951465L (no) * 1995-04-19 1996-10-21 Fjerby As Armeringsanordning for jordskråning og fremgangsmåte ved oppbygging av den armerte jordskråning

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8326632U1 (de) * 1983-09-16 1985-08-29 Wrede, Werner, 5500 Trier Gittersatz zur Bildung einer Böschungsbefestigung
US4952098A (en) * 1989-12-21 1990-08-28 Ivy Steel Products, Inc. Retaining wall anchor system
CH683434A5 (de) * 1991-06-11 1994-03-15 Hermann Claus Verkehrswegesanierung an abrutschgefährdeten Hanglagen.
WO1995000712A1 (fr) * 1993-06-24 1995-01-05 Societe Civile Des Brevets Henri Vidal Structures en terre
WO1995006784A1 (fr) * 1993-08-30 1995-03-09 The Reinforced Earth Company Terrassement a façade en treillis metallique

Also Published As

Publication number Publication date
NO985251D0 (no) 1998-11-10
PL329847A1 (en) 1999-04-12
DE69717619T2 (de) 2003-09-18
PL183988B1 (pl) 2002-08-30
NO985251L (no) 1999-01-08
AU2763697A (en) 1997-12-05
ATE229110T1 (de) 2002-12-15
WO1997043489A1 (fr) 1997-11-20
DE69717619D1 (de) 2003-01-16
EP0897435A1 (fr) 1999-02-24
DK56396A (da) 1997-12-11
EP0897435B1 (fr) 2002-12-04
DK0897435T3 (da) 2003-03-24
NO320078B1 (no) 2005-10-17

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