FR2590291A1 - Means for stabilising steep fill embankments - Google Patents
Means for stabilising steep fill embankments Download PDFInfo
- Publication number
- FR2590291A1 FR2590291A1 FR8517623A FR8517623A FR2590291A1 FR 2590291 A1 FR2590291 A1 FR 2590291A1 FR 8517623 A FR8517623 A FR 8517623A FR 8517623 A FR8517623 A FR 8517623A FR 2590291 A1 FR2590291 A1 FR 2590291A1
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- FR
- France
- Prior art keywords
- edge
- slope
- textile sheet
- mesh
- means according
- 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.)
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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
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)
Abstract
Description
MOYENS DE STABILISATION DES TALUS EN REMBLAI
A FORTE INCLINAISON
La présente invention concerne des moyens de stabilisation des talus en remblai à forte inclinaison.MEANS FOR STABILIZING EMBANKMENTS
HIGH TILT
The present invention relates to means for stabilizing embankments in steep embankments.
Il est très souvent nécessaire pour prévenir l'érosion des sols et assurer leur stabilité, qu'il s'agisse de sols de fondation ou de sols en pente tels que les talus ou remblais, de placer, entre plusieurs couches de terre, une couche de renforcement. It is very often necessary to prevent soil erosion and ensure its stability, whether it be foundation soils or sloping soils such as embankments or embankments, to place, between several layers of soil, a layer reinforcement.
Plusieurs techniques sont utilisées dans ce but. Several techniques are used for this purpose.
Selon l'une d'entre elles, on introduit dans le sol des éléments rigides tels que ceux employés pour la terre - armee, le clouage et d'autres procédés équivalents. According to one of them, rigid elements such as those used for earth - armored, nailing and other equivalent methods are introduced into the ground.
Dans cette technique, le sol et l'inclusion sont considérés comme deux matériaux distincts en raison notamment de la rigidité de l'inclusion par rapport aux sols. Le point de rupture à la traction des nappes de renforcement rigides utilisées jusqu'alors est atteint pour due faibles allongements, donc pour de faibles déformations. In this technique, the ground and the inclusion are considered as two separate materials due in particular to the rigidity of the inclusion with respect to the soil. The breaking point in traction of the rigid reinforcement plies used hitherto is reached for small elongations, therefore for small deformations.
D'autres techniques utilisent des éléments souples et notamment des couches de paille ou des nappes textiles. Other techniques use flexible elements and in particular layers of straw or textile sheets.
Dans le cas des talus en remblai à forte inclinaison, on utilise une nappe textile, généralement tissée, dont une partie horizontale inférieure est prise en sandwich entre deux tranches superposées du talus, et dont un prolongement est rabattu par dessus la tranche supérieure avant application d'une nouvelle tranche, une partie intermédiaire de ce prolongement servant à la protection du talus contre l'érosion en l'empêchant de s'effriter en direction du bas de la pente, cette partie intermédiaire du prolongement servant effectivement à appuyer le bord incliné et visible de cette tranche de talus. In the case of embankments with a steep slope, a textile sheet, generally woven, is used, a lower horizontal part of which is sandwiched between two superimposed sections of the slope, and an extension of which is folded over the upper section before application of '' a new section, an intermediate part of this extension serving to protect the slope against erosion by preventing it from crumbling towards the bottom of the slope, this intermediate part of the extension effectively serving to support the inclined edge and visible from this slice of slope.
Cette nappe textile, bien que donnant satisfaction sur le plan de la stabilisation du talus, présente l'inconvénient de ne pas permettre la retenue de façon satisfaisante de la couche de terre arable répandue sur la pente du talus car elle empêche les racines des plantations de pénétrer dans le talus et, par conséquent, elle. empêche cette couche d'y adhérer. This textile tablecloth, although satisfactory in terms of stabilizing the slope, has the disadvantage of not allowing satisfactory retention of the layer of topsoil spread over the slope of the slope because it prevents the roots of the plantations from growing. enter the embankment and, therefore, it. prevents this layer from adhering to it.
On a proposé de remédier à ces inconvénients en utilisant des grillages disposés de la même manière que les nappes textiles précitées. It has been proposed to remedy these drawbacks by using screens arranged in the same way as the aforementioned textile sheets.
Il s'agit le plus souvent de grillages ne présentant pas d'aptitude à l'allongement, qu'il s'agisse de grillages métalliques ou de grillages en matière plastique. These are most often gratings which do not have an elongation ability, whether they are metallic or plastic gratings.
Dans sa demande FR-A-85 10982, la Demanderesse a proposé un procédé de renforcement des sols qui remédie aux inconvénients de la technique antérieure grâce à l'utilisation d'un élément de renforcement original qui, une fois pris en sandwich entre les couches de remblai, forme avec le sol une véritable matière composite, exerçant ainsi une action très importante de renforcement. In its application FR-A-85 10982, the Applicant has proposed a process for reinforcing floors which remedies the drawbacks of the prior art by using an original reinforcing element which, when sandwiched between the layers backfill, forms with the ground a real composite material, thus exerting a very important action of reinforcement.
Cet élément de renforcement est choisi parmi les grillages en matière plastique présentant des coefficients d'allongement très élevés associés à une excellente résistance à la traction pour des déformations importantes. This reinforcing element is chosen from plastic mesh with very high elongation coefficients associated with excellent tensile strength for significant deformations.
Ce procédé est actuellement un procédé onéreux, ce qui peut renchérir considérablement le coût des talus en remblai. This process is currently an expensive process, which can considerably increase the cost of embankment slopes.
La présente invention s'est donné pour but de pallier ces inconvénients en proposant de nouveaux moyens de stabilisation des talus en remblai, qui unissent les avantages des différents types de stabilisation antérieurs tout en permettant de réaliser une économie importante dans le coût des travaux. The purpose of the present invention is to overcome these drawbacks by proposing new means for stabilizing embankments in embankments, which combine the advantages of the various previous types of stabilization while allowing significant savings in the cost of works.
A cet effet, les moyens de stabilisation selon l'invention comprennent une nappe textile horizontale placée en sandwich entre deux tranches superposées du talus et une nappe en grillage destinée à recouvrir la face latérale inclinée de la tranche du talus située au-dessus de la nappe textile précitée et qui, à cet effet, présente un bord fixé entre le bord correspondant de la nappe textile et la tranche du talus inférieure et dont l'autre bord est destiné à être rabattu au-dessus de la tranche de talus supérieure, de manière que sa partie intermédiaire constitue l'habillage de la face latérale inclinée de cette tranche de talus supérieure. To this end, the stabilization means according to the invention comprise a horizontal textile sheet placed in a sandwich between two superimposed sections of the slope and a mesh sheet intended to cover the inclined lateral face of the side of the slope situated above the table. textile mentioned above and which, for this purpose, has an edge fixed between the corresponding edge of the textile sheet and the edge of the lower slope and the other edge of which is intended to be folded over the edge of the upper slope, so that its intermediate part constitutes the covering of the inclined lateral face of this section of upper slope.
On dispose ainsi de moyens performants garantissant la stabilisation du talus et permettant la retenue de la couche de terre arable répandue sur la pente de celui-ci, puisque la présence du grillage permet aux racines des plantations de pénétrer dans ledit talus, en l'absence d'interface continue. This provides efficient means guaranteeing the stabilization of the slope and allowing the retention of the layer of topsoil spread on the slope thereof, since the presence of the fence allows the roots of the plantations to penetrate into said slope, in the absence of continuous interface.
Quand le grillage utilisé est du type décrit dans le FR-A-85 10982, c'est-à-dire un grillage dont l'allongement à la traction est supé- rieur à 100 % de la longueur initiale et peut atteindre 300 % avant d'arriver à la valeur de rupture, on améliore encore les propriétés de renforce ment du sol. When the mesh used is of the type described in FR-A-85 10982, that is to say a mesh whose elongation at tension is greater than 100% of the initial length and can reach 300% before arriving at the breaking value, the soil strengthening properties are further improved.
La présente invention sera mieux comprise et ses avantages ressortiront bien de la description qui suit d'un mode de réalisation des moyens de stabilisation des talus en remblai en référence au dessin schématique annexé dont la figure unique est une vue en coupe d'un talus équipé desdits moyens. The present invention will be better understood and its advantages will emerge clearly from the following description of an embodiment of the embankment stabilization means in embankment with reference to the appended schematic drawing, the single figure of which is a sectional view of an equipped embankment said means.
Sur la figure, le talus est désigné par 2, la nappe textile par 3 et le grillage par 4. In the figure, the slope is designated by 2, the textile tablecloth by 3 and the mesh by 4.
Le talus 2 représenté à la figure est un talus à forte inclinaison constitué de terre de remblai. Les moyens utilisés selon l'invention pour sa stabilisation vont maintenant être décrits en détail. Une nappe textile horizontale 3 est placée en sandwich entre deux tranches superposées 5 et 6 dudit talus. The embankment 2 shown in the figure is a steep embankment made up of embankment earth. The means used according to the invention for its stabilization will now be described in detail. A horizontal textile sheet 3 is sandwiched between two superimposed slices 5 and 6 of said slope.
Cette nappe 3 peut être réalisée à partir de tout matériau connu; il s'agit, de préférence, de matière textile imputrescible telle que le polypropylène, le polyéthylène et le polyester, sans que - cette liste soit limitative. La nappe peut être une nappe tissée ou tricotée, ou une nappe non-tissée. This ply 3 can be made from any known material; it is preferably a rot-proof textile material such as polypropylene, polyethylene and polyester, without - this list is exhaustive. The tablecloth can be a woven or knitted tablecloth, or a nonwoven tablecloth.
Une nappe en grillage synthétique 4 est placée de façon a recouvrir la face latérale inclinée 7 de la tranche de talus 5. A synthetic mesh sheet 4 is placed so as to cover the inclined lateral face 7 of the slope edge 5.
Un des bords 8 de cette nappe 4 est fixé entre le bord correspondant de la nappe textile 3 et la tranche de talus inférieure 6. Cette fixation peut être réalisée, par exemple, par coincement ou liaison par couture, collage, soudure out agrafage. One of the edges 8 of this ply 4 is fixed between the corresponding edge of the textile ply 3 and the lower slope edge 6. This fixing can be carried out, for example, by wedging or bonding by sewing, gluing, welding or stapling.
L'autre bord 9 de cette nappe en grillage 4 est rabattu audessus de la tranche de talus supérieure 5, de tellè sorte que sa partie intermédiaire 10 constitue l'habillage de la face latérale inclinée 7 de cette tranche de talus supérieure 5. The other edge 9 of this mesh ply 4 is folded back over the upper slope edge 5, so that its intermediate part 10 constitutes the covering of the inclined side face 7 of this upper slope edge 5.
Le grillage 4 est de préférence réalisé par extrusion dtune matière plastique imputrescible, telle que le polypropylène. Il peut s'agir d'un grillage en matière plastique pré-étirée et qui, de ce fait, ne dispose pratiquement plus d'aptitude à l'allongement. The mesh 4 is preferably made by extruding a rot-proof plastic, such as polypropylene. It may be a mesh of pre-stretched plastic material and which, therefore, has practically no longer elongability.
Il peut aussi s'agir d'un grillage tel que celui décrit dans le
FR-A-85 10982, c'est-à-dire d'un grillage réalisé par extrusion de telle sorte que lui soit communiqué un coefficient d'allongement à la rupture très élevé, cet allongement pouvant dépasser 300 % avant le point de rupture qui se situe au-dessus de 390 % pour une charge de près de 900 Kg. It can also be a grid like that described in the
FR-A-85 10982, that is to say a mesh produced by extrusion so that a very high elongation coefficient at break is communicated to it, this elongation possibly exceeding 300% before the breaking point which is above 390% for a load of almost 900 Kg.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8517623A FR2590291B1 (en) | 1985-11-21 | 1985-11-21 | MEANS FOR STABILIZING HIGH-TILT EMBANKMENTS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8517623A FR2590291B1 (en) | 1985-11-21 | 1985-11-21 | MEANS FOR STABILIZING HIGH-TILT EMBANKMENTS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2590291A1 true FR2590291A1 (en) | 1987-05-22 |
FR2590291B1 FR2590291B1 (en) | 1988-08-19 |
Family
ID=9325240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8517623A Expired FR2590291B1 (en) | 1985-11-21 | 1985-11-21 | MEANS FOR STABILIZING HIGH-TILT EMBANKMENTS |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2590291B1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0480890A1 (en) * | 1990-10-12 | 1992-04-15 | COMES S.p.A. | A reinforced soil vegetative wall and method for realizing the same |
FR2703377A1 (en) * | 1993-03-30 | 1994-10-07 | Gieulles Denis | Stabilization device for carapace elements of the body of work. |
FR2712956A1 (en) * | 1993-11-25 | 1995-06-02 | Totalgaz Cie Fse | Method of protecting and concealing large spherical tank |
EP0681065A1 (en) * | 1994-05-06 | 1995-11-08 | Pecune S.A. | Support structure for uneven ground |
US20220081866A1 (en) * | 2020-09-14 | 2022-03-17 | Yunnan Agricultural University | Ridge with ecological isolation zone and construction method thereof |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU60121A1 (en) * | 1968-12-31 | 1970-07-01 | ||
GB1310474A (en) * | 1970-07-15 | 1973-03-21 | Johnson & Johnson | Reticulate sheet material |
DE2626650A1 (en) * | 1976-06-15 | 1977-12-29 | Herbert Dr Ing Kielbassa | Fabric reinforced stacked earthworks - uses soil layers alternating with plastics fabric layers providing lateral reinforcement |
FR2388090A1 (en) * | 1977-04-19 | 1978-11-17 | Ici Ltd | SOIL CONSOLIDATION AND STABILIZATION PROCESS USING AN ETOFFE |
BE873556A (en) * | 1979-01-18 | 1979-07-18 | Verbeeck Pierre | DEVICE FOR REINFORCING AND / OR SUPPORTING MOVABLE MASSES AND PROCEDURE FOR REALIZING IT |
GB2035191A (en) * | 1978-10-16 | 1980-06-18 | Plg Res | Plastics material mesh structure |
GB2073281A (en) * | 1979-12-03 | 1981-10-14 | Netlon Ltd | Reinforced soil structure |
-
1985
- 1985-11-21 FR FR8517623A patent/FR2590291B1/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU60121A1 (en) * | 1968-12-31 | 1970-07-01 | ||
GB1310474A (en) * | 1970-07-15 | 1973-03-21 | Johnson & Johnson | Reticulate sheet material |
DE2626650A1 (en) * | 1976-06-15 | 1977-12-29 | Herbert Dr Ing Kielbassa | Fabric reinforced stacked earthworks - uses soil layers alternating with plastics fabric layers providing lateral reinforcement |
FR2388090A1 (en) * | 1977-04-19 | 1978-11-17 | Ici Ltd | SOIL CONSOLIDATION AND STABILIZATION PROCESS USING AN ETOFFE |
GB2035191A (en) * | 1978-10-16 | 1980-06-18 | Plg Res | Plastics material mesh structure |
BE873556A (en) * | 1979-01-18 | 1979-07-18 | Verbeeck Pierre | DEVICE FOR REINFORCING AND / OR SUPPORTING MOVABLE MASSES AND PROCEDURE FOR REALIZING IT |
GB2073281A (en) * | 1979-12-03 | 1981-10-14 | Netlon Ltd | Reinforced soil structure |
Non-Patent Citations (1)
Title |
---|
POLYMER GRID RENFORCEMENT, Proceedings of a Conference Sponsored by the Science and Engineering Research Council and Netlon Ltd., Londres, 22-23 mars 1984, pages 191-197, 1985, Thomas Telford, Londres, GB; J.PAUL: "Economics and construction of blast embankments using Tensar geogrids" * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0480890A1 (en) * | 1990-10-12 | 1992-04-15 | COMES S.p.A. | A reinforced soil vegetative wall and method for realizing the same |
FR2703377A1 (en) * | 1993-03-30 | 1994-10-07 | Gieulles Denis | Stabilization device for carapace elements of the body of work. |
WO1994023133A1 (en) * | 1993-03-30 | 1994-10-13 | Denis Gieulles | Device for the stabilization of the shielding elements of a structure's body |
FR2712956A1 (en) * | 1993-11-25 | 1995-06-02 | Totalgaz Cie Fse | Method of protecting and concealing large spherical tank |
EP0681065A1 (en) * | 1994-05-06 | 1995-11-08 | Pecune S.A. | Support structure for uneven ground |
ES2113246A1 (en) * | 1994-05-06 | 1998-04-16 | Pecune Sa | Support structure for uneven ground. |
US20220081866A1 (en) * | 2020-09-14 | 2022-03-17 | Yunnan Agricultural University | Ridge with ecological isolation zone and construction method thereof |
Also Published As
Publication number | Publication date |
---|---|
FR2590291B1 (en) | 1988-08-19 |
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