FR2610961A1 - LIGHT LAND CONSOLIDATION WORK - Google Patents

Abstract

The lightweight reinforcing structure or lightweight wall is characterised, according to the invention, in that it comprises a substantially U-shaped concrete slab (1), in which is inserted at least one parallelipipedic element (2) made of an alveolar plastic in the form of a block, the upper part of said element (2) which projects from the slab being covered successively with a grid (3) and with a thin layer of concrete (4). The invention is used for public works.

Description

The subject of the present invention is a

  light work of land consolidation.

  So far the consolidation of the ter-

  rains is generally carried out using gabions, or small reinforced concrete walls, or even pre-fabricated walls. All these achievements require a large workforce because of the large quantities of

  materials and / or earth, to be used.

  We have now found a system of conso-

  lidation of land of the light wall type which is effective

  effective and easy to implement.

  The invention therefore relates to a lightweight land consolidation structure, characterized. in that it comprises -a.semell-e of concrete substantially in the form of

  _J, in which at least one parallel element is inserted-

  the elepiped in a cellular plastic material in the form of a block, the upper part of said element

  protruding from the sole being successively covered-

  ment by a mesh and a thin layer of concrete.

  The cellular plastic material in the form of a block may in particular be expanded polystyrene or

  honeycomb polypropylene, or any other material

similar material.

  According to other characteristics: In order to ensure water drainage, the block of cellular plastic material can be provided,

  at its lower part protruding from the sole of baby

tone, of barbacans.- -

  - The- part- of the block of plastic material

  alveolar inserted between the two branches of the se-

  U-shaped melle maybe fluted on its faces

  -lateral to- provide better adhesion to the

  your. - The block of cellular plastic material has a slight angle between the vertical and the slope

  (i.e. the edge of the land to be conso-

  lid) to take into account the bending of the material

loading time.

  In most cases, several blocks of plastic material will be used

  alveolar which must be linked together.

  This link can be made using

  d at least one steel rod, in particular twisted, tra-

  laterally pouring the blocks and optionally folded at the end. According to another variant, the blocks can

be linked together by bonding.

  The light land consolidation structure according to the invention can be installed for example

as follows.

  Preliminary, the blocks of material

  cellular plastic are cut to size

  sirées and, where appropriate, their lower side part

  reure is fluted for example with a saw. By ail-

  their, the foot of the slope to be consolidated is released. The base of the concrete base in the shape of It is poured in situ and the blocks of cellular plastic material are aligned on top and linked together by means of steel rods or glue. Then the two branches of the U-shaped concrete base are poured. When the concrete has set, the ground is backfilled and the upper part of the blocks of material

  protruding cellular plastic is covered succes-

  a grid and a thin layer of concrete

by projection.

  The light structure-consolidation work according to the invention is particularly easy to put on

  and offers great user safety.

2 6 1 0961

  tion, for example when building roads.

  The following description next to

  accompanying drawings will better understand the realization of the invention. In these drawings:

  - Fig. 1 shows a perspective view

  tive of a light work of consolidation of grounds

  comprising a single block of cellular plastic material

laire;

  - Fig. 2 shows a perspective view

  tive of a light work of consolidation of grounds

  comprising several blocks of plastic material al-

  voleolar; and - Fig. 3 shows a side view in section of the structure according to FIG. 2 in place against

land to be consolidated.

  The light land consolidation work or light wall shown in FIG. 1 comprises a concrete footing 1 substantially U-shaped, in which is inserted a parallelepipedic element 2 made of a cellular plastic material in the form of a block, the upper part of said element projecting from the

  sole being successively covered by a grill

  ge 3 and a thin layer of concrete 4, for example by spraying by means of a nozzle 5. The dimensions of the concrete footing 1 can be for example: width 1.10 m, height 0.55 m, height branches of U 0, 30 m, the length being chosen according to the needs of

  consolidation. Block 2 of cellular plastic material

  the surface, in particular of expanded polystyrene (for example "Compostyrene") may have the dimensions for example: height 1.20 m, width 0.50 m, and the lateral faces of its inserted part, over a depth of

2 6 1 0 9 6 1

  0.30 m for example, in the concrete footing 1, can

  be grooved (not shown) using a saw.

  The useful height of this wall according to the pre-

  cited is about 0.90 m. The lower part of the block 2 projecting from the sole 1 is provided with a system of barbican 6 having for example a diameter of cm allowing the drainage of water. Block 2 usefully presents a slight angle of about 2 'between the

  vertical and the slope to hold the bending of the ma-

  alveolar plastic material at the time of loading.

  Figs. 2 and 3 represent a work

  light consolidation of land of larger dimensions

  higher than that of FIG. 1, the concrete footing of which 1 has for example the dimensions: width 2.20 m, height 1 m, width between the branches of the U 1, height of the branches 0.75 m, the length being able to be

  varied at will. Several blocks 2 of plas-

  alveolar tick, in particular of polystyrene, having for example as dimensions 2.50 m x 0.50 m x 1.20 are

  inserted into the sole to a depth of 0.75 m.

  The blocks 2 are linked together by means of twisted steel rods 7 having for example a diameter of 8 mm. If necessary, they can be glued. For the rest, ie the wire mesh 3, the thin layer of concrete 4 sprayed by a nozzle 5 and the barbican 6,

  the realization can be identical to that of the

  vrage of Fig. 1. In this example, the useful height

from the wall is 2 m.

Claims (7)

  1. Light land consolidation structure   rains, characterized in that it comprises a substantially U-shaped concrete base, in which is inserted at least one parallelepipedal element of a cellular plastic material in the form of a block, the   upper part of said element protruding from the se-   melle being successively covered by a mesh and a thin layer of concrete.   2. Light work according to claim 1, characterized in that the cellular plastic material   in the form of a block of expanded polystyrene.   3. Light work according to claim 1 or claim 2, characterized in that the block of cellular plastic material is provided at its part   lower protruding from the concrete footing, bar-   bacanas. 4. Light work according to any one of   claims 1 to 3, characterized in that the part   of the block of cellular plastic material inserted between   the two legs of the U-shaped sole can- edged on its side faces.   5. Light work according to any one of   Claims 1 to 4, characterized in that the block of   cellular plastic material has a slight angle   between the vertical and the edge of the field.   6. Light work according to any one of   Claims 1 to 5, characterized in that it comprises   several blocks of cellular plastic material linked   between them using at least one steel rod.   7. Light work according to any one of   Claims 1 to 5, characterized in that it comprises   several blocks of cellular plastic material linked between them by gluing.