FR2758576A1 - DIRECTOR WALL FOR COMMUNICATION CHANNELS - Google Patents

Abstract

Directing wall for communication paths consisting of wall elements joined frontally to each other which are each connected by at least one fixing point (6) which is provided therein at least one anchor (3) preferably placed on the ground , the fixing point (6) of the wall element (1) being connected to the anchor (3) by at least one preferably elastic element for limiting movement (2) .par.

Description

The present invention relates to

  a directing wall for communication paths consisting of wall elements joined frontally to each other which are each connected by at least one fixing point which there

  is provided with at least one anchor preferably placed on the ground.

  Wall guiding systems, concrete protective walls, restraint systems and similar systems of this type are in many cases made up of precast concrete wall elements having for example a New Jersey profile which are joined together others on their front sides by fittings, so that there is a continuous connection resistant to the traction of all the wall elements which has a retaining effect for different parts of the roadway. In the case of an unattached installation of the directing wall, the self-weight of the individual elements produces a drag effect, but a displacement of the entire wall is possible and even desired so that the energy produced during a collision can be annihilated by displacement work. A problem with these guiding walls is that they help by their mobility to avoid serious consequences of accidents, but can then be moved again to the point of being able to cause damage to other objects or people. However, if the steering wall is fixed to the ground, it may act as a completely rigid wall which can cause damage and have effects.

  much larger when a vehicle goes off the road.

  The problem underlying the invention was to provide a steering wall of the type indicated at the start which, on the one hand, reduces the impact energy on a vehicle which strikes it and, on the other hand, cannot undergo too much

great displacement.

  The invention therefore provides that the location of the wall element is connected to the anchor by at least one preferably elastic element

movement limitation.

  This allows a determined limited movement of the wall element, so that transmission of kinetic energy in movement work is allowed, but undefined movement is prevented. If the movement limitation element is elastic, the additional energy resulting from the movement is eliminated in the form of expansion work. The forces produced in the event of collisions are absorbed first by the inertia of the wall elements, the friction on the ground and the effect of pulling the connecting elements in the longitudinal direction of the directing wall and then by the connection provided by the invention between the anchor and the location of the wall element. This reduces the field of action compared to non-anchored wall elements, so that a job

  is also possible in case of limited space in the road area.

  According to the invention, it can also be provided that the place of attachment and

  io the anchor are offset in height.

  Thus, for example, a point located higher up on the wall element is in this way connected to the anchoring point, which creates a particularly advantageous point of attack for limiting movement, because a

  overturning of the wall element is made impossible.

  According to another variant of the invention, it can be provided that the place of

  fixing and anchoring are offset in the horizontal direction.

  This allows easier mounting of a director wall according to the invention.

  According to the invention, it can also be provided that the limiting element

  movement is formed by a cable, preferably a steel cable.

  The steel cable limits the latitude of movement by its elongation and moreover, after reaching its stretched position, still has a certain elastic elongation and thus helps to dampen the percussion movement. It can also be provided that the steel cable is longer than the distance from the place of attachment to the anchor and is laid

  freely preferably in the form of a loop.

  This allows displacements exceeding the dimensional differences of the wall elements without having to give up placing the element

  of limitation of the invention in the area of the wall element.

  According to another characteristic of the invention, it can be provided that the cable is bent at each end into an eyelet by which the

  fixing to the anchor or to the fixing place.

  This allows a simple junction between the cable in

  steel and the place of fixing or anchoring.

  It can also be provided that the cable eyelet on the end side is fixed to

  the anchor or at the place of fixing by a cylindrical head screw.

  This allows a removable link between the anchor and the fixing point provided on the wall element, resulting in mounting and

easy disassembly of the latter.

  1is Another characteristic of the invention can consist in that the cable eyelet on the anchor side is sealed in a concrete cylinder embedded in the ground. This gives a very stable fixation and prevents displacement of

  the wall element exceeding a value which can be fixed in advance.

  According to the invention, it can also be provided that the wall-side cable eyelet is wrapped around reinforcing elements of the wall element and

preferably sealed to it.

  This fixing of the limiting element directly to the frame prevents

  uncontrolled tearing of it from the wall element.

  According to the invention, it can also be provided that part of the steel cable is laid substantially vertically and another part thereof laid in the form of a substantially horizontal S loop going to the anchor. This on the one hand allows a fixing to the wall element offset in height with respect to the anchoring for example in the ground and on the other hand gives a part of the cable which can be stretched during movement which allows a limitation and a elastic damping of the movement of movement of the wall element during a percussion, which avoids serious consequences of accidents. According to the invention, it can also be provided that the movement limiting element is an elastic bar, preferably a metal bar. The realization in the form of a metal bar makes it possible to obtain an even greater tensile strength and rigidity to remove

  very large displacement forces.

  According to another variant of the invention, the bar can be embedded at its end on the wall side in the wall element and at its end on the anchor side

in the anchor.

  This allows a secure and easy fixing.

  According to another alternative embodiment, the bar can be curved in S or

at least in a part.

  By these curvatures, the metal bar undergoes, in the event of the production of a movement of displacement, an extension in the direction of a rectilinear dilation, and the extension work accomplished transforms the

  percussion work and reduces its harmful effect.

  In addition, the S or U part of the bar can be oriented

substantially horizontally.

  In this way, the extension takes place in the movement plane and allows a

  relatively large displacement of the wall element.

  Provision may also be made for the bar to be bent in one part.

  The bending gives a particularly high resistance to low displacement forces, so that displacement is hardly permitted with them. It is only in the event of events with more percussion energy that a noticeable change in position can be observed. According to the invention, it can also be provided that the fixing location is

  placed above the anchor and the bar is bent meandering.

  This placement gives a very space-saving housing of the element of

limitation of the invention.

  In addition, the movement limitation element can be formed of a freely placed wire loop which is fixed at its ends at the place of fixing in the wall element and the loop side of which passes through an eyelet.

done on the anchor.

  io This gives a very efficient and easy to make connection possibility.

  The invention is explained in detail below with the aid of exemplary embodiments shown in the drawings, in which: FIGS. 1, 2, 3, 4, 5, 6, 7, 8, 8a, 8b, 9 and 10 are oblique projections each of a wall element of an embodiment of a wall

director according to the invention.

  In fig. 1 is a part of a wall-mounted steering system for communication paths made up of wall elements 1 joined together one after the other, which are each connected to an anchor 3 by a fixing location 6. This anchor, for example a Liebig anchor, is in most cases directly in the ground, for example in a foundation, in a pavement, etc., but can also be provided on other fixed elements. Fig. 1 shows an extremely widespread profile shape of the wall element which is made in the manner

New Jersey concrete elements.

  The invention provides that the fixing point 3 of the wall element 1 is connected to the anchor 3 by a movement limitation element 2. This form of fixing can be carried out for each wall element or for some- some chosen from the guiding wall. Several fixing places with corresponding anchors can also be provided for each element

of wall.

  The fixing location 6 consists of a vertical steel bar which is embedded in the wall element 1 and joined at its lower end 5, which carries a thread, at one end of the limiting element

  movement 2 of the invention by a cylindrical head screw 7.

  In the present exemplary embodiment, the limiting element is formed by a steel cable 2 of length greater than the distance from the place of attachment 6 to the anchor 3, this steel cable 2 preferably being placed under the shape of a loop which is placed freely in the lower cavity of

wall element 1.

  The steel cable 2 is provided at each end with an eyelet 4 by which the junction is made at the anchor 3 or at the fixing location 6. The eyelet 4 1o on the end side is fixed by a screw with a cylindrical head 8 at anchor 3, which has an internal thread. When the wall element 1 is moved by a collision, the cable 2, which can be made of materials other than steel, stretches until it reaches its full extension and thus limits an additional displacement of the wall element 1. In the exemplary embodiment of FIG. 8b, the steel cable 2 is replaced by a bar 22 provided

  of eyelets which is curved in the same way as this one.

  In the exemplary embodiment of FIG. 2, the eyelet 4 on the end side is sealed in a concrete cylinder 3 embedded in the ground, which forms

anchoring.

  In fig. 3, the eyelet 4 on the wall side is wound around reinforcing elements of the wall element 1 and sealed to it, so that there is a particularly stable fixing of the steel cable 2 in the element wall 1 and special protection against tearing. The reinforcing elements 10 open directly into a front connector 10 'through which

  made the frontal junction to the neighboring wall element, not shown.

  A part of the steel cable 2 is laid substantially vertically and a second part laid in the form of a substantially horizontal S-loop which goes to the anchor not shown, only the S-part of the

  cable can act to limit movement.

  In fig. 6 is shown another embodiment in which the fixing location 6 is placed above the anchor 3 and the steel cable 2 is laid meandered, and eyelets 4 are again made by which a fixing is made at the ends of the cable 2. Thanks to the meandering of the cable 2, the prismatic zone provided for this in the wall element 1 above the anchor 3 is used as best as possible without it

  may cause kinking of the cable in the event of a collision.

  The movement limitation element shown in FIG. 7 is formed by a cable loop 21 which is screwed at its end at the fixing point 6 in the wall element 1 and the loop side of which passes through a

eyelet 26 made on anchor 3.

  In the exemplary embodiment of FIG. 4, the elastic element of movement limitation consists of a bar 20 which is embedded at its end on the wall side 11 in the wall element 1 and, at its end on the anchor side, in the anchor 3 and is bent in S in a part. Thus, in the event of movement of the wall element, an extension of the bar thus curved 20 takes place and thus a reduction or elimination of the transmitted energy. Anchoring can be done in preferred foundations and / or

  provided for this or on the fixed pavement surface.

  The S-shaped part of the bar 20 can extend substantially vertically (fig. 4) or in another position approximately horizontally as on

fig. 5.

  In the exemplary embodiment of FIG. 8, the bar 20 is bent in part and, at its end on the anchor side, fixed in the ground anchor by means of a cylindrical head screw 8 by means of a drilled plate welded to it. The vertical part 6 of the bar is embedded in the wall element 1 as a fixing point, and the free space available below the wall element is used for the bent part of the bar 20. When a collision, an extension of the bent part of the

  bar 20, which partly transforms the impact energy produced.

  In fig. 8a is shown a variant of FIG. 8 which consists in that in the wall element 1 is embedded an independent vertical bar 6 'which has, on its projecting lower side of the wall element, a threaded part 61 which is joined to the bar 20 by another

  pierced plate 62 welded at its second end and a screw 63.

  Fig. 9 shows another possible variant of bending of a bar in the form of a U-shaped bracket which is placed in a front recess of the wall element 1. FIG. 10 shows another embodiment of such a U-shaped bracket 20 in which the branches thereof extend in the longitudinal direction of the wall element 1 in a prismatic recess provided for this and the branch flowing into the anchor 3 is longer than the branch attached to the mounting location 6.5

Claims (17)

  1. Directing wall for communication paths consisting of wall elements joined frontally to each other which are each connected by at least one fixing location which is provided therein at least one anchoring preferably placed on the ground, characterized by fact that the fixing point (6) of the wall element (1) is connected to the anchor (3) by at least one element   preferably elastic movement limitation (2, 20, 21).   2. Director wall according to claim 1, characterized in that   the mounting location (6) and the anchor (3) are offset in height.   3. Direction wall according to one of claims 1 and 2, characterized by   fact that the fixing point (6) and the anchor (3) are offset in the horizontal direction.   4. Direction wall according to one of claims 1 to 3, characterized by the   the movement limitation element is formed of a cable (2), of preferably a steel cable.   5. Steering wall according to claim 4, characterized in that the steel cable (2) is of length greater than the distance from the fixing location (6) to the anchor (3) and is preferably placed freely under the form of a loop.   6. Direction wall according to one of claims 4 and 5, characterized by   the steel cable (2) is bent at each end into an eyelet (4) by which the attachment is made to the anchor (3) or to the location of attachment (6). 7. Steering wall according to claim 6, characterized in that the cable eyelet (4) end side is fixed to the anchor (3) by a screw cylindrical head (7, 8).   8. Steering wall according to claim 6, characterized in that the cable eyelet (4) anchor side is sealed in a concrete cylinder embedded in the ground.   9. Directing wall according to one of claims 6 to 8, characterized by the   causes the wall-side cable eyelet (4) to be wrapped around elements   of frame (10) of the wall element (1) and preferably sealed to it.   10. Director wall according to one of claims 6 to 9, characterized by   makes part of the steel cable (2) lay sensiblemera vertically inside the wall element (1) and another part of the steel cable (2) is laid externally in the form of a loop in   S substantially horizontal going to the anchor (3).   11. Director wall according to one of claims 4 to 8, characterized by the   that the fixing point (6) is placed above the anchor (3) and the   steel cable (2) is bent in meanders.   12. Director wall according to one of claims 1 to 3, characterized by the   the fact that the movement limitation element is an elastic bar (20),   preferably a metal bar.   13. Steering wall according to claim 12, characterized in that the bar (20) is embedded, at its end on the wall side, in the wall element   (1) and, at its end on the anchor side, in the anchor (3).   14. Steering wall according to one of claims 12 and 13, characterized by   the fact that the bar (20) is curved in S or U at least in one part.   15. Steering wall according to claim 14, characterized in that the S or U-shaped part of the bar (20) is oriented substantially horizontally. 16. Steering wall according to claim 12, characterized in that the   bar (20) is bent in one part.   17. Directing wall according to one of claims 1 to 3, characterized by the   that the movement limitation element is formed of a freely laid cable loop (21) which is fixed at its ends by screwing to the fixing point (6) in the wall element (1) and whose the loop side   goes through an eyelet (26) made on the anchor (3).