FR3088348A1 - SUPPORT OF A GUARDRAIL POST FOR A LAND STABILIZATION SYSTEM - Google Patents

Abstract

The support (30) comprises: - a body (31) formed of rigid bars and which has the shape of a truncated pyramid with rectangular base, converging upwards, the faces of which are defined by said bars, the body (31) having: - a lower face (33) intended to rest on the ground; - a substantially planar upper face parallel to the lower face; - A peripheral wall including an opposite front face (35) and a rear face (36), as well as two opposite lateral faces; - a plate (40) fixed to the body (31) substantially at and parallel to the upper face thereof, the plate (40) comprising means for assembling a post (51) of the guardrail (50).

Description

The present invention relates to a support for a railing post.

The invention also relates to a range comprising a plurality of such supports, a system for stabilizing a terrain comprising such a support, and a method of placing a railing in a system for stabilizing a terrain.

Some unstable ground, for example sloping ground, made of slippery or rolling material, and / or overgrown with vegetation, etc. must be stabilized to guarantee the security of people and property, and maintain this security over time. This is particularly the case for the edges of railways or roads.

A known system consists in producing a flat bottom cavity in the ground, along the slope for example, and in filling it with ballast or similar bulk material, the ballast being retained by an angular grid whose lower portion is embedded in a layer of cleanliness concrete at the bottom of the cavity. By "angular grid" is meant a grid forming an angle, more precisely a grid comprising two walls which form a dihedral.

There is an additional request for the installation of guardrails to secure the movement of maintenance personnel, avoiding possible falls. However, in practice, the installation of a guardrail involves relatively restrictive steps.

Thus, it is often necessary, with existing systems, to provide a reservation in the cleanliness concrete layer to place a tube which will be embedded in this layer and in which, later, we will insert a railing post.

In addition, a difficulty lies in the need to place the tubes with precision, so that they are finally in correspondence with the posts of the railing. This is all the more delicate since the angular grids can have standard dimensions which do not correspond to the standard spacing of conventional railing posts.

The present invention aims to remedy all or part of the drawbacks mentioned above, by making it possible to improve the installation of a railing in a system for stabilizing a terrain.

To this end, and according to a first aspect, the invention relates to a support for a railing post, the support comprising:

a body formed of rigid bars and which has the shape of a truncated pyramid with rectangular base, converging upwards, the faces of which are defined by said bars, the body having:

- a lower face intended to rest on the ground;

- a substantially planar upper face parallel to the lower face;

- a peripheral wall including an opposite front face and a rear face, as well as two opposite lateral faces;

- A plate fixed to the body substantially at and parallel to the upper face thereof, the plate comprising means for assembling the railing post.

The support according to the invention can be easily and quickly put in place in a cavity formed in a ground to be stabilized, simply by being placed on the horizontal bottom of the cavity - directly, or indirectly by resting on an intermediate element such as a part of an angular retaining grid. Due to its pyramidal shape, the support is stable on its underside and therefore does not require any special arrangements for its maintenance during the installation of the entire ground stabilization system. This stability also makes it possible to considerably facilitate the adjustment of the spacing between two successive supports, to correspond to the spacing between the posts of the railing.

In addition, the body being formed of bars, it has a reduced weight which facilitates its handling.

The term "bar" designates a straight and elongated part. It may be a rod, smooth or notched, for example of round section, or a piece of cut sheet metal.

Advantageously, the faces of the pyramidal body are preferably not solid but simply consist of a contour formed or partially formed by the bars. Optionally, on at least one face, the body may further comprise additional bars, distinct from those forming the contour of said face but linked to them, and arranged in the plane of said face.

In addition, the body may be hollow, that is to say devoid of element (rigid bars or the like) in its internal volume. This results in an even lower weight. In addition, this allows the introduction of clean concrete to drown the body and lead to the fixing of the support to the ground, as well as the filling of the support with the bulk material of ballast type, for an effective stabilization of the support and therefore of the bodyguard. Once the support is embedded in the bulk material, the plate remains accessible above the ballast, for example by being substantially flush, and a post can therefore be easily assembled to this plate. The post is for example inserted in a base which forms a sheath for receiving the post, the base itself being assembled to the plate.

The support can have at least one plane of symmetry orthogonal to the upper and lower faces of the body. Preferably, the support can have two planes of symmetry each orthogonal to the upper and lower faces, said two planes of symmetry being more perpendicular to each other. As a variant, only the body and not the entire support - has this or these planes of symmetry. The symmetry facilitates the manufacturing process, by limiting the parts, and the implementation process, by limiting the risks of poor positioning.

According to a possible embodiment, for at least one face of the peripheral wall of the body, the angle between the lower side and one of the sides adjacent to said lower side is between 70 ° and 90 °, preferably of the order of 80 °. This angle can be adapted to the angle formed by the angular grid for retaining the ballast belonging to the ground stabilization system.

With a support having two planes of symmetry, as explained above, it can be provided that said angle of a first face of the peripheral wall of the body and said angle of a second face adjacent to the first face are substantially equal. With such a configuration, the support can be placed in any direction.

According to one embodiment, the body comprises:

- two trapezoidal frames - preferably with rounded corners - comprising a large base located at the lower face of the body and a small base located at the upper face of the body, the frames forming two opposite faces of the wall peripheral body;

- And at least one substantially rectangular frame arranged parallel to the upper and lower faces of the body, each angle of the frame being secured to one side of a frame other than the small or large base, so as to substantially form a contour line of the body .

With this configuration, and if the frame is located higher than the underside of the body, the underside of the body is formed by two parallel bars, namely the large bases of the two trapezoidal frames, and not by four bars forming a rectangle, which gives more stability to the support.

For example, the trapezoidal frames form the lateral faces of the support body.

The frame (s) are preferably separated, that is to say located at a distance from the lower face and / or the upper face of the body. Preferably, the body comprises at least two frames, located at different heights from the body, and more frames if necessary for the rigidity and the strength of the frames.

According to one embodiment, the plate comprises a substantially horizontal main wall which is secured to the body and two wings extending from the main wall each against opposite faces of the peripheral wall of the body, over a height of less than 10% of body height.

The assembly means may comprise at least one orifice for receiving a pole fixing member or a base for receiving the pole.

According to a second aspect, the invention relates to a range of supports comprising a plurality of supports as previously described. The supports in the range have different heights, upper faces of the same dimensions and substantially identical plates. In addition, for all the supports in the range, the predefined angles (between the lower side and one of the sides adjacent to said lower side on at least one face of the peripheral wall of the body) are substantially equal. The fact of providing supports of different heights allows adaptation to angular retaining grids of different heights of a ground stabilization system.

According to a third aspect, the invention relates to a system for stabilizing land - in particular sloping land - which comprises:

- an angular grid for retaining bulk material such as a ballast, the angular grid comprising a base wall configured to rest on a substantially horizontal portion of a cavity formed in the ground, and a front wall which has an upper edge and which forms with the base wall a dihedral with an angle of between 70 and 90 °, preferably of the order of 80 °;

- At least one support for a railing post as previously described, the support being arranged so that the lower surface of the body rests on the base wall of the angular grid and that the front face of the body of the support is adjacent to the front wall of the angular grid, the support and the angular grid being configured so that the plate is located at least partially above the upper edge of the front wall of the angular grid;

- And preferably a railing comprising at least one post assembled to the plate of said support.

The position of the plate relative to the angular grid allows the plate to be accessible for the installation of a post, once the ballast is introduced into the ground cavity

The predefined angle of the support (between the lower side and one of the sides adjacent to said lower side on at least one face of the peripheral wall of the body) and the angle of the dihedron formed by the angular grid can be substantially equal. In this way, the support can come to bear against the front wall of the angular grid, which improves the stability of the support, particularly before final fixing by pouring concrete.

The system can include several supports. Each support has a median vertical axis (which typically corresponds to the axis of the post that it will carry), the supports being regularly arranged on the angular grid with a substantially constant spacing d between the median vertical axes of two successive supports. This spacing is less than the length L of the angular grid and, preferably, the length L of the angular grid is a multiple of d, for example L = 4 d. This facilitates the realization and implementation of the ground stabilization system. Other length ratios are possible, for example L = 3 d.

According to one possible embodiment, when the angular grid and the support are placed in a cavity formed in the ground, the angular grid is fixed to the ground by a holding element such as a stake driven into the ground at the level of the wall of the angular grid. In addition, the system includes a layer of clean concrete embedding a lower portion of the angular grid and the body of the support, and a bulk material such as a ballast filling the cavity, above the layer of clean concrete. and substantially to the upper edge of the front wall of the angular grid.

Clean concrete, spread in a thin layer on the floor, provides a clean work surface and avoids contamination of the soil above the layer.

It is possible to provide means for attaching the support (in particular to the body of the support) to the angular grid, before pouring the cleanliness concrete, to avoid displacement of the support during this operation.

According to a fourth aspect, the invention relates to a method of installing a railing in a system for stabilizing a terrain as described above, the railing comprising at least one post. The method comprises, in this order, the steps consisting in:

a) set up the angular grid in a cavity made in the ground;

b) place the or each support on the angular grid;

c) pour a layer of cleanliness concrete so as to drown a lower portion of the angular grid and of the body of the support;

d) filling the cavity with a loose material such as a ballast, above the layer of cleanliness concrete and substantially up to the upper edge of the front wall of the angular grid;

e) assemble the or each post of the railing to the plate of the support or of the corresponding support.

Of course, if the railing has several posts, you must provide as many supports and space them correspondingly.

The method can also comprise, between steps b) and c), the step of attaching the or each support to the angular grid. For this purpose, one can use a link such as a plastic necklace, a wire, etc. It is not necessary to make a very firm fixing, but just sufficient support so that, once the layer of cleanliness concrete has been poured and solidified, the supports are integral with the angular grid and correctly positioned with respect thereto. .

A possible embodiment of the invention is now described, by way of nonlimiting example, with reference to the appended figures:

Figure 1 is a schematic sectional view of a terrain equipped with a stabilization system including an angular grid and a support according to an embodiment of the invention;

Figure 2 is a perspective view of the terrain and the stabilization system of Figure 1;

Figure 3 is a perspective view of the angular grid;

Figure 4 is a perspective view of a support;

Figure 5 is a side view of the body of the support of Figure 4;

Figures 6 and 7 are partial views of the support, respectively seen from above and seen from the side;

Figure 8 is a perspective view of another support according to the invention;

Figure 9 is a detail view of a railing post assembled to a plate of a support;

Figure 10 is a perspective view of a railing that can be implemented on the supports of the invention;

Figure 11 illustrates a stabilization system installed on land, a railing while being installed.

FIG. 1 represents a terrain 1 on which is placed a railroad track 2 bordered on either side by a shoulder 3 at the level of which a cavity 4 is formed in the terrain 1. The cavity 4, open towards the outside, has a substantially horizontal portion 5 located below the level of the railroad track 2 and which opens onto a sloping surface 6 of the terrain 1, and a rear portion 7.

Although the invention is described here in the context of the stabilization of a rail shoulder, it applies to other structures such as car parks built on several levels, Reinforced Earth ® structures, etc.

As shown in FIG. 1, the vertical direction Z is defined, and the two horizontal directions X and Y orthogonal to one another, Y corresponding to the direction of the railway.

The terms “front” and “rear” are used with reference to direction X, the term “rear” designating an element closer to the railroad than an element qualified as “front”. The terms "length" and "side" are used with reference to the Y direction. The terms "height", "lower", upper "and the like are used with reference to the Z direction.

The invention relates to a system 10 for stabilizing the terrain 1, which essentially comprises an angular grid 20 and supports 30 for a railing 50.

The angular grid 20, illustrated in FIG. 3, comprises a base wall 21 and a front wall 22, preferably made from interlocking metal rods, welded and bent. The front wall 22 has an upper edge 23 and forms with the base wall 21 a dihedral with an angle β of between 70 and 90 °, preferably of the order of 80 °.

As seen in Figures 1 and 2, the angular grid 20 is placed in the cavity 4, near the sloping surface 6 of the terrain 1, the base wall 21 of the angular grid 20 resting on the horizontal portion 5 of the cavity 4. There are angular grids 20 more or less high as required. The relatively high angular grids may comprise one or more hooks 24 arranged obliquely between the base wall 21 and the front wall 22, as seen in FIGS. 1 and 2, while a lower angular grid, like that of Figure 3 can be devoid of it.

The angular grid 20 is fixed to the terrain 1 by one or more retaining elements 11 such as a pile driven substantially vertically into the terrain 1 at the base wall 21 of the angular grid 20. The or each retaining element 11 can also be held back by a traction element 12.

The angular grid 20 has a length L, along the direction Y, which can be standard. In practice, several angular grids 20 are placed successively along the direction Y, all along the area to be stabilized.

Several supports 30 are placed on the or each angular grid 20, to allow the installation of a railing 50.

Concretely, as illustrated in FIG. 10, a railing 50 comprises at least one, and preferably several posts 51 which will each come to assemble to a dedicated support 30. The posts 51 are preferably regularly spaced, the vertical axes A51 of two successive posts 51 being spaced by a distance d.

The railing 50 can advantageously be designed so that the spacing d between two successive posts 51 is a submultiple of the length L of an angular grid 20, so as to facilitate the installation of the stabilization system 10. We can consider having L = 4 d. For example, for a length L of 4.84 m, d can be 1.21 m.

The railing 50 can also include an upper rail 53 or handrail, a lower rail 54 and / or an intermediate rail 55.

A support 30 according to the invention is illustrated in FIGS. 4 to 7.

The support 30 comprises a body 31 formed of rigid bars 32, preferably made of metal. They can be concrete irons, smooth or notched, or cut sheets.

The body 31 has the shape of a truncated pyramid with a rectangular base, converging upwards, the faces of which are defined by the bars 32. The body 31 thus has:

a lower face 33 which, in the installed position of the body 20, is substantially horizontal and rests on the ground;

an upper face 34 substantially planar and parallel to the lower face 33. Due to the upward convergence of the pyramidal shape of the body 31, the upper face 34 has an area less than the area of the lower face 33;

a peripheral wall including an opposite front face 35 and rear face 36, as well as two opposite lateral faces 37a, 37b.

In one possible embodiment, the body 31 comprises two frames 38 in the shape of a trapezoid, preferably with rounded angles, forming two opposite faces of the peripheral wall of the body 31, here for example the lateral faces 37a, 37b. Each frame 38 has a large base 38a located at the lower face 33 of the body 31 and a small base 38b located at the upper face 34 of the body 31.

In addition, the body 31 may comprise at least one substantially rectangular frame 39 arranged parallel to the upper 34 and lower 33 faces of the body 31. Each angle of the frame 39 is secured to one side 38c, 38d of a frame 38 other than the small or large base 38b, 38a, so as to substantially form a contour line of the body 31.

The frame (s) 39 can be welded to the frames 38, for example outside of the latter.

The body 31 may also comprise at least one reinforcing bar 32 ′ situated in the plane of the frame 38, and joining a first and a second angle present in said plane. One of the angles can be an angle of the trapezoid and the other an angle formed between one side of the frame 39 and the side 38c, 38d of the frame 38 intersecting said side of the frame 39. As a variant, the two angles can be each formed between one side of the frame 39 and the side 38c, 38d of the frame 38 intersecting said side of the frame 39 (said two angles being distinct). It is also possible to provide that at least one reinforcing bar extends substantially along a diagonal of a trapezoid.

There is thus at least one oblique bar 32 ′ in the plane of the frame 38, preferably at least two oblique bars 32 ′ forming a broken line. If the body 31 has at least three oblique bars 32 'in the plane of the frame 38, these preferably form a zigzag, that is to say a broken line forming alternately salient and reentrant angles. Preferably the other faces of the peripheral wall of the body 31 - namely the front face 35 and the rear face 36 in the example illustrated - are devoid of reinforcing bar.

In an embodiment not shown, the body 31 may further comprise one or more flanges, for example in the form of a metal plate, forming an additional support on the ground.

In the embodiment shown in the figures, the bars forming the body are rods, in particular of round section. However, this achievement is not limiting.

Thus, one could provide that the body is formed from a cut sheet. The body can thus comprise two identical one-piece parts forming two opposite faces of the peripheral wall of the pyramid. Each piece can be made in one piece by cutting a sheet, and form: the four sides of the trapezoid outline, a horizontal reinforcing bar joining two sides of the trapezoid, and an oblique bar joining the small base and the large base, for example substantially diagonally. In addition, the sheet can be folded over at the sides of the trapezoid which are not the bases, substantially orthogonally to the plane of said trapezium. At said sides, the sheet thus forms a rounded edge between the two corresponding adjacent faces of the peripheral wall of the pyramid.

The support 30 has a vertical vertical axis A30 which, in the installed position of the stabilization system 10, can typically be merged with the vertical axis A51 of the post 51 of the railing 50 assembled to said support 30.

Advantageously, the support 30 can have two planes of symmetry each orthogonal to the upper 34 and lower 33 faces of the body 31, and perpendicular to each other, namely:

a plane of symmetry PI located in a plane (Y, Z), as seen in particular in FIG. 5;

and a plane of symmetry P2 situated in a plane (X, Z), as seen in particular in FIG. 7.

For each face 35, 36, 37a, 37b of the peripheral wall of the body 31, an angle a is formed between the lower side of the face and one of the sides adjacent to said lower side (see Figures 4 and 5). When the support 30 has symmetry planes PI and / or P2, we have the following configuration:

for a given face 35, 36, 37a, 37b, the angles a between the lower side of the face and each of the sides adjacent to said lower side are identical;

and / or said angle a of a first face of the peripheral wall of the body 31 and said angle a of a second face adjacent to the first face are equal.

The angle a can be between 70 ° and 90 °, preferably of the order of 80 °. Advantageously, the angle a of the body 31 of the support 30 and the predefined angle β of the angular grid 20 can be substantially equal.

The support 30 also comprises a plate 40 fixed to the body 31.

The plate 40 may comprise a main wall 41 substantially rectangular and horizontal, in the installed position of the support 30, which is secured to the body 31, substantially at and parallel to the upper face 34 of the body 31. The plate 40 may also comprise two wings 42 extending from the main wall 41 each against opposite faces of the peripheral wall of the body 31. In the nonlimiting embodiment shown, the wings 42 are placed against and outside the lateral faces 37a, 37b. The wings 42 have a reduced height, typically less than 10% of the height of the body 31.

In one possible embodiment, the plate 40 is made of metal, for example by folding a metal plate. The plate 40 can be welded to the body 31.

The plate 40 comprises means for assembling a post 51 of the railing 50. These assembly means may comprise at least one orifice 43 for receiving a fixing member such as a bolt 44. The member of fixing can allow the fixing of the post 51 directly on the plate 40, or the fixing on the plate 40 of a receiving base of the post 51.

Thus, as illustrated in FIGS. 9 and 10, a base 45 can be provided comprising a horizontal flange 46 fixed to the main wall 41 of the plate 40 by bolts 44, and defining a housing 47 of axis A30 in which the post 51 can be inserted and held by other fixing members 48. The base 45 can be made in one piece or in several separate pieces.

In practice, the method for installing the stabilization system 10 of the terrain 1 firstly involves the installation of the angular grid 20 -or several angular grids successively all along the terrain - in the cavity 4, as explained above. .

Then the supports 30 are put in place. Each support 30 is arranged so that the lower surface 33 of the body 31 of the support 30 rests on the base wall 21 of the angular grid 20 and that the front face 35 of the body 31 is adjacent to the front wall 22 of the angular grid 20. When the angles a and β are identical, the body 31 can be in abutment against the front wall 22 of the angular grid 20.

The support 30 and the angular grid 20 are configured so that the plate 40 is located at least partially above the upper edge 23 of the front wall 22 of the angular grid 20. This is why the support 30 is chosen from a range supports according to the dimensions of the angular grid.

The range of supports includes a plurality of supports as previously described. The supports 30 of the range have different heights, so as to adapt to different heights of angular grids 20, in particular depending on the constraints of the terrain 1. In practice, for example, the height of the supports 30 of the range can be between 500 mm and 950 mm, with some heights available in this range (of the order of 3 to 6 for example).

In addition, the supports 30 of the range have upper faces 34 of the same dimensions, which makes it possible to provide only one type of plate 40 for these different supports 30. In addition, the predefined angles a are substantially equal for all the supports 30 of the range, which allows a shape correspondence with the dihedron of the angular grid 20 in the whole range.

FIG. 8 for example shows a support 30 ′ of the range different from the support 30 illustrated in FIG. 4, which essentially differs by its greater height. As can be seen, with greater height, for reasons of rigidity and stability, a support 30 ′ may include a larger number of frames 29 and reinforcing bars 32 ′.

As illustrated in FIG. 8, provision can be made for the large base 38a of an armature 38 of a support 30 or 30 ′ to have an interruption in its central part; in this case, each trapezoidal frame 38 is supported on the ground by two feet directed towards each other and whose free ends are not contiguous.

Concretely, several supports 30 are placed on each angular grid 20. The supports 30 are regularly arranged on the angular grid 20 with a substantially constant spacing d between the vertical vertical axes A30 of two successive supports 30, to correspond to the spacing between two posts 51 of the railing 50. It is advantageous to attach the or each support 30 to the angular grid 20 to prevent any relative displacement before final fixing of the stabilization system 10.

A mesh 9 or a geocompatible fabric is preferably interposed between the front face 35 of the body 31 and the front wall 22 of the angular grid 20 (Figures 1 and 2).

A layer 60 of cleanliness concrete is then poured, so as to drown a lower portion of the angular grid 20 and of the body 31 of the support 30 and to allow the angular grid 20 and the body 30 to be joined.

Then the cavity 4 is filled with a loose material 61 such as a ballast, above the cleanliness concrete layer 60 and substantially up to the upper edge 23 of the front wall 22 of the angular grid 20. The grid angular 20 thus allows the bulk material 61 to be retained, this moreover making it possible to finalize the attachment of the support 30 to the angular grid 20 and its firm holding in the installed position.

The plate 40 being located at least partially above the upper edge 23 of the front wall 22 of the angular grid 20, it is accessible above the bulk material 61, which allows the installation of the railing 50 Preferably, the plate 40 can be substantially flush with the upper face of the bulk material 61, for safety reasons (thus preventing a person from abutting against the plate 40) and aesthetics.

The railing 50 can then be installed, by assembling the posts 51 each to the plate 40 of the corresponding support 30, since the supports 30 have been spaced from each other in an appropriate manner.

A stabilization system 10 thus produced is shown in Figures 1 5 and 2. Figure 11 shows a stabilization system 10 having several angular grids 20 forming an angle between them, a railing being placed on an angular grid 20 , while the other angular grid 20 comprises supports 30 is awaiting reception of the posts 51 of a railing.

Thus, the invention brings a decisive improvement to the prior art, by providing a light support, self-stable, easy to set up and to be fixed to the angular ballast retaining grid, at an appropriate spacing, for placing later easy installation of a railing. The installation process does not require making reservations in the cleanliness concrete layer, which represents a significant simplification.

It goes without saying that the invention is not limited to the embodiment described above by way of example but that it includes all the technical equivalents and variants of the means described as well as their combinations.

Claims (15)

1. Support (30) for a post (51) for a railing (50), the support (30) comprising: a body (31) formed of rigid bars (32) which has the shape of a truncated pyramid with a rectangular base, converging upwards, the faces of which are defined by said bars, the body (31) having: - a lower face (33) intended to rest on the ground; - an upper face (34) substantially planar and parallel to the lower face (33); - A peripheral wall including an opposite front face (35) and a rear face (36), as well as two opposite lateral faces (37a, 37b); a plate (40) fixed on the body (31) substantially at and parallel to the upper face (34) thereof, the plate (40) comprising means (43) for assembling the post (51) of railing (50). 2. Support according to claim 1, characterized in that it has at least one plane of symmetry (Pl, P2) orthogonal to the upper (34) and lower (33) faces of the body (31), and preferably two planes of symmetry (Pl, P2) each orthogonal to the upper (34) and lower (33) faces, said two planes of symmetry (Pl, P2) being moreover perpendicular to each other. 3. Support according to claim 1 or 2, characterized in that, for at least one face (35, 36, 37a, 37b) of the peripheral wall of the body (31), the angle (a) between the lower side and one of the sides adjacent to said lower side is between 70 ° and 90 °, preferably of the order of 80 °. 4. Support according to claim 3, characterized in that it has two planes of symmetry (Pl, P2) each orthogonal to the upper (34) and lower (33) faces, said two planes of symmetry (Pl, P2) being of more perpendicular to each other, and in that said angle (a) of a first face (35, 36, 37a, 37b) of the peripheral wall of the body (31) and said angle (a) of a second face adjacent to the first side are substantially equal. 5. Support according to one of claims 1 to 4, characterized in that the body (31) comprises: two trapezoidal frames (38) - preferably with rounded angles - comprising a large base (38a) situated at the level of the lower face (33) of the body (31) and a small base (38b) situated at the level of the upper face (34) of the body (31), the reinforcements (38) forming two opposite faces (37a, 37b) of the peripheral wall of the body (31); and at least one substantially rectangular frame (39) arranged parallel to the upper (34) and lower (33) faces of the body (31), each angle of the frame (39) being secured to one side of a frame (38) other than the small or large base (38b, 38a), so as to substantially form a contour line of the body (31). 6. Support according to one of claims 1 to 5, characterized in that the plate (40) comprises a main wall (41) substantially horizontal which is secured to the body (31) and two wings (42) extending from the main wall (41) each against opposite faces (37a, 37b) of the peripheral wall of the body (31), over a height less than 10% of the height of the body (31). 7. Support according to one of claims 1 to 6, characterized in that the assembly means comprise at least one orifice (43) for receiving a fixing member (44) of the post (51) or a base (45) for receiving the post (51). 8. Range of supports (30) comprising a plurality of supports (30) according to one of claims 1 to 7, the supports (30) of the range having different heights, upper faces (34) of the same dimensions and substantially identical plates (40) and, when the supports (30) comply with claim 3, said angles (a1, a2) are substantially equal for all the supports (30). 9. Stabilization system (10) for a ground (1), comprising an angular grid (20) for retaining bulk material (61) such as a ballast, the angular grid (20) comprising a base wall ( 21) configured to rest on a substantially horizontal portion (5) of a cavity (4) formed in the ground (1), and a front wall (22) which has an upper edge (23) and which forms with the wall of base (21) a dihedral of angle (β) between 70 and 90 °, preferably of the order of 80 °, characterized in that it further comprises: at least one support (30) of a post (51) for a railing (50) according to one of claims 1 to 7, the support (30) being arranged so that the lower surface (33) of the body ( 31) rests on the base wall (21) of the angular grid (20) and that the front face (35) of the body (31) of the support (30) is adjacent to the front wall (22) of the angular grid ( 20), the support (30) and the angular grid (20) being configured so that the plate (40) is located at least partially above the upper edge (23) of the front wall (22) of the angular grid ( 20); and preferably a railing (50) comprising at least one post (51) assembled to the plate (40) of said support (30). 10. System according to claim 9, the support (30) being in accordance with claim 3, characterized in that said angle (a) of the body (31) of the support (30) and said angle (β) of the angular grid ( 20) are substantially equal. 11. System according to claim 9 or 10, characterized in that it comprises several supports (30), each support (30) having a vertical median axis (A30), the supports (30) being regularly arranged on the angular grid ( 20) with a substantially constant spacing (d) between the median vertical axes (A30) of two successive supports (30), and in that the length (L) of the angular grid (20) is a multiple of (d), for example L = 4 d. 12. System according to one of claims 9 to 11, the angular grid (20) and the support (30) being placed in a cavity (4) formed in the ground (1), the angular grid (20) being fixed to the ground (1) by a holding element (11) such as a pile driven into the ground (1) at the level of the base wall (21) of the angular grid (20), characterized in that the system (10) comprises a layer of cleanliness concrete (60) embedding a lower portion of the angular grid (20) and of the body (31) of the support (30), and a bulk material (61) such as a filling ballast the cavity (4), above the cleanliness concrete layer (60) and substantially up to the upper edge (23) of the front wall (22) of the angular grid (20). 13. Method of fitting a bodyguard (50) into a stabilization system (10) of a terrain (1) according to one of claims 9 to 12, the bodyguard (50) comprising at minus a post (51), characterized in that the method comprises, in this order, the steps consisting in: a) place the angular grid (20) in a cavity (4) formed in the ground (1); B) place the or each support (30) on the angular grid (20); c) pouring a layer of cleanliness concrete (60) so as to drown a lower portion of the angular grid (20) and of the body (31) of the support (30); d) fill the cavity (4) with a loose material (61) such as a ballast, above the layer of cleanliness concrete (60) and substantially to the edge Upper (23) of the front wall (22) of the angular grid (20); e) assemble the or each post (51) of the railing (50) to the plate (40) of the support (30) or of the corresponding support (30). 14. Method according to claim 13, characterized in that it comprises In addition, between steps b) and c), the step consisting in attaching the or each support (30) to the angular grid (20).