WO2020008136A1 - Système de protection contre un impact - Google Patents
Système de protection contre un impact Download PDFInfo
- Publication number
- WO2020008136A1 WO2020008136A1 PCT/FR2019/051633 FR2019051633W WO2020008136A1 WO 2020008136 A1 WO2020008136 A1 WO 2020008136A1 FR 2019051633 W FR2019051633 W FR 2019051633W WO 2020008136 A1 WO2020008136 A1 WO 2020008136A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- impact
- protection system
- reinforcements
- coherent structure
- impact protection
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/02—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic specially adapted for sustaining vegetation or for accommodating plants ; Embankment-type or crib-type noise barriers; Retaining walls specially adapted to absorb or reflect noise
- E01F8/021—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic specially adapted for sustaining vegetation or for accommodating plants ; Embankment-type or crib-type noise barriers; Retaining walls specially adapted to absorb or reflect noise with integral support structure
- E01F8/025—Gabion-type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
- E01F15/081—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/145—Means for vehicle stopping using impact energy absorbers
Definitions
- the invention relates to the field of road protection and in particular to embankments used along the roadway to prevent exits from roads or to absorb the impacts of a vehicle, a landslide or even boulders.
- protective drifts consist of a stack of individual containers such as bags or gabions, filled with heavy material, generally granular.
- Structures with a smaller footprint are often very slender, which limits the ability to stop impact. Indeed, a block which would impact this type of structure with a significant energy would be likely to cross the structure by punching it, or at least to cause external instability, for example a tilting or a sliding of the structure.
- structures with a known limited footprint do not allow sufficient internal energy dissipation due to their low deformability.
- a structure having a reduced footprint compared to known structures capable of absorbing comparable impacts This problem can be formulated differently: there is also a need for a structure capable of absorbing a greater impact compared to known structures having a comparable footprint.
- the Applicant has succeeded in developing a new protection system which achieves this by stressing several faces of a deformable structure, and not only the face which is subjected to the impact.
- the protection system according to the invention makes it possible in particular to protect roads in a cramped context.
- a first object of the present invention consists of an impact protection system comprising:
- a deformable coherent structure having several faces; and B. a set of integral reinforcements configured to distribute the energy of an impact on the deformable coherent structure,
- the set of integral reinforcements is configured so that a stress bulb generated by an impact on the coherent structure is distributed over several faces of the structure, preferably on at least two opposite faces.
- coherent deformable structure is meant a structure capable of absorbing mechanical energy, for example by dissipation of internal energy.
- Advantageous examples of such structures include granular embankments optionally reinforced with metallic or geosynthetic reinforcements.
- such structures can easily adapt to the configuration of the site.
- these structures are chosen so that they can be mounted easily and without heavy formwork. They exhibit good durability, given their conditions of use, generally outdoors.
- the structures are chosen so that they can be repaired without difficulty if necessary.
- the fact that the structure has several faces does not mean that it is necessarily polyhedral.
- the notion of face in the sense of the invention corresponds to an external surface of the structure capable of being directly stressed by a given type of impact.
- the type of impact is assessed according to the use of the invention.
- the invention is intended to protect from impact from a vehicle, rocky blocks or landslides along the roadway. These are all types of impact.
- a first face of the structure generally corresponds to the whole of the structure liable to be stressed by a direct impact of a given type.
- a direct impact of a given type For example, in the case of the impact of a vehicle for a structure located at the edge of the roadway, it is the part of the structure likely to be struck by a vehicle which would make a departure from the road without leaving floor.
- This face may have roughness or reliefs, we will still call it a face in the sense of this request.
- the faces are characterized by their propensity to undergo a direct impact of a given type or not.
- At least one other side is not likely to be directly stressed by the impact likely to directly stress the first side.
- the set of integral reinforcements comprises at least one reinforcement. In the case where it comprises several reinforcements, it suffices that each reinforcement is attached to at least one other reinforcement of the assembly so that the reinforcement assembly is considered to be integral within the meaning of the invention.
- the reinforcement assembly is configured so that at least part of the reinforcement assembly enters in tension under the effect of an impact on one face of the deformable structure and applies an increment of compression to the structure deformable.
- the stress is distributed between two opposite faces: the set of integral reinforcements is for example anchored on the opposite face of the structure so that the impact causes a tension of the set of reinforcements which transmits a stress on the opposite side.
- the distribution of the impact on several faces generally applies an increment of compression to the deformable structure.
- the set of integral reinforcements advantageously comprises at least one element chosen from a net, a metallic element, a polymeric element, a bar, a cable, a woven or knitted fabric, and preferably a metallic net.
- the set of integral reinforcements may include elements passing through the deformable structure, for example connecting elements distinct from the non-crossing reinforcements but adapted to transmit a tension between different reinforcements through the deformable structure, or adapted to stress the structure at the interior so as to evenly distribute the stress generated by an impact.
- the compression transmission can be done by beams, slabs or other positioned at the top of the set of reinforcements.
- the set of integral reinforcements is arranged so as to completely envelop the coherent structure, which can make it possible to stress as many faces as possible for a given impact.
- the set of integral reinforcements is then preferably under tension.
- the set of integral reinforcements is pretensioned in order to improve its reactivity under impact.
- the system is configured to withstand an energy greater than 1 megajoule.
- the system according to the invention is preferably used in a road context, and must therefore be able to absorb significant impacts.
- the deformable coherent structure comprises a reinforced granular fill.
- Reinforced granular embankments have very satisfactory mechanical properties given their ease of production. Ease of low-cost production is particularly critical in road application since very large distances may need to be protected.
- the granular backfill can be reinforced with metallic or geosynthetic reinforcements. This type of reinforcement makes it possible to very effectively reinforce the properties of embankments when the structure is likely to undergo greater impacts, for example along high-speed roads.
- the set of integral reinforcements preferably has anchor points, and at least one anchor point is housed in the coherent structure or at least one anchor point is housed in a foundation soil.
- the two anchors can for example be in the foundation soil.
- the location of the anchor points influences the tensioning of the set of integral reinforcements and therefore the way in which an impact will be distributed on the deformable structure.
- the coherent structure can be provided with a flexible facing, preferably a flexible facing chosen from geosynthetic sheets and welded or woven mesh panels.
- the facing is then preferably separate from the set of integral reinforcements.
- the set of integral reinforcements can replace the facing of the deformable structure.
- the set of integral reinforcements has a stiffness greater than 1.3 m3 / m.
- the company GEOBRUGG markets grid, tablecloth or net reinforcements which have this type of characteristic.
- the set of integral reinforcements has at least two ends connected by at least one connecting element, preferably said at least one connecting element passing through the coherent structure.
- Another object of the present invention consists of a method of constructing an impact protection system according to the invention comprising a first step consisting in completely producing a deformable coherent structure, and a second step consisting in covering said coherent structure d '' a set of solidarity reinforcements configured to distribute the energy of an impact on the deformable coherent structure.
- the set of integral reinforcements can be pretensioned before a subsidiary step of anchoring the set of integral reinforcements in the structure and / or in a foundation soil.
- FIG. 1 is a simplified representation of a first embodiment of the invention
- FIG. 2 is a simplified representation of an alternative implementation of the embodiment of FIG. 1
- FIG. 3 is a simplified representation of the embodiment of FIG. 1 with an alternative anchoring system
- FIG. 4 is a simplified representation of the embodiment of FIG. 1 with an anchoring produced directly in the coherent structure
- FIG. 5 is a simplified representation of an alternative embodiment of the invention.
- FIG. 6 is a simplified representation of an alternative implementation of the embodiment of Figure 5.
- a massive structure 10 consisting of granular embankments such as a reinforced soil, further comprising a vegetated facing, not shown.
- This massive structure 10 has several faces. Although it is represented schematically by a rectangular parallelepiped in Figure 1, it can have other shapes.
- the structure is designed to be placed along a motorway, in order to absorb shocks caused in particular by possible exits from the road of vehicles.
- Crash test experiments allow us to estimate the duration of a collision, that is to say the time during which the body of a vehicle deforms, at around one tenth of a second.
- the structure according to the invention must therefore make it possible to absorb an impact of several hundreds of thousands of Newton.
- the latter is wrapped in a metallic net 1 1 tensioned by means of an anchor 12.
- the anchor 12 is made at ground level of the foundation, on either side of the massive structure 10.
- anchoring 121 can also be carried out at the base of the structure, under the massive structure, as illustrated in FIG. 3.
- the anchor 122 can be produced directly in the massive structure.
- the anchor must be strong enough because the force of the impact will largely be transmitted to its level.
- the net 11 may consist of a two-dimensional network with a mesh of rectangular shape, for example, as illustrated in FIG. 1, such as a metal grid.
- a network allowing the transmission of force is suitable for implementing the invention.
- the net may consist of a one-dimensional network 1 1 1 oriented so as to connect two series of anchors and making it possible to urge several faces of the structure, as illustrated in FIG. 2.
- the net then consists of disjoint linear sections and substantially parallel to each other, such as reinforcing strips. These bands are for example steel, or any suitable material.
- the impact can also be transmitted via a complex structure 1 12 made up of several modules, for example a first net 1 13 made of polymer material connected to a rigid slab 1 14 itself connected to a second net 1 15 , as illustrated in Figures 5 and 6.
- the slab is for example a concrete slab, which can be integral with the massive structure.
- the first and second nets may have identical networks, as illustrated, or not.
- This network can consist of a regular parallelepipedic mesh as in Figure 5, or a more irregular structure, for example a linear structure stretched in a zigzag between two edges of the solid structure, as illustrated in Figure 6.
- the choice of network depends of the geometry of the massive structure, the availability of materials used, and the direction most likely to impact the structure.
- the structures according to the invention being for example intended to border a motorway, they will be arranged over many kilometers so that the quantity of materials used can quickly be a limiting data.
- the two nets must be linked to the slab in such a way as to transfer the impact force from the first network to the slab and from the slab to the second network.
- the slab is preferably made of a material which is not likely to break when it is stressed in the most likely direction of impact. It can for example be an oriented fibrous material, or an anisotropic concrete.
- the slab can be designed to absorb part of the force of an impact, for example by deformation, whether in a plastic or elastic regime.
- the massive structure In the case of the other structures illustrated in FIGS. 1, 2, 4, and 5, one begins by providing the massive structure. It can be a structure created for the occasion or, alternatively, it can be pre-existing structures that need to be improved. In a final step, the structure is therefore covered by the net or the complex structure configured to distribute a possible impact on the massive structure.
- the net is for example unwound from the crest of the massive structure, using ad hoc equipment.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19753140.3A EP3818212A1 (fr) | 2018-07-03 | 2019-07-02 | Système de protection contre un impact |
JP2021500071A JP2021529276A (ja) | 2018-07-03 | 2019-07-02 | 衝撃保護システム |
CA3104866A CA3104866A1 (fr) | 2018-07-03 | 2019-07-02 | Systeme de protection contre un impact |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1856135A FR3083551B1 (fr) | 2018-07-03 | 2018-07-03 | Systeme de protection contre un impact |
FR1856135 | 2018-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020008136A1 true WO2020008136A1 (fr) | 2020-01-09 |
Family
ID=63080168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2019/051633 WO2020008136A1 (fr) | 2018-07-03 | 2019-07-02 | Système de protection contre un impact |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3818212A1 (fr) |
JP (1) | JP2021529276A (fr) |
CA (1) | CA3104866A1 (fr) |
FR (1) | FR3083551B1 (fr) |
WO (1) | WO2020008136A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3097574B1 (fr) * | 2020-06-25 | 2023-03-31 | Soletanche Freyssinet | Structure d’absorption d’une énergie d’impact |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20112979U1 (de) | 2000-09-08 | 2001-10-25 | Weber Rainer | Steinkorb |
DE202006002393U1 (de) | 2006-02-14 | 2007-06-21 | H. Geiger Gmbh Stein- Und Schotterwerke | Transportable Vorrichtung zur Aufnahme von Steinen und Pflanzen |
DE202013011453U1 (de) | 2013-12-23 | 2014-02-25 | Wolfgang Deutschle | Gabione mit Hubösen |
EP3073017A1 (fr) | 2015-03-27 | 2016-09-28 | Metallurgica Ledrense - Societa Cooperativa | Gabion |
-
2018
- 2018-07-03 FR FR1856135A patent/FR3083551B1/fr active Active
-
2019
- 2019-07-02 JP JP2021500071A patent/JP2021529276A/ja active Pending
- 2019-07-02 EP EP19753140.3A patent/EP3818212A1/fr active Pending
- 2019-07-02 CA CA3104866A patent/CA3104866A1/fr active Pending
- 2019-07-02 WO PCT/FR2019/051633 patent/WO2020008136A1/fr unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20112979U1 (de) | 2000-09-08 | 2001-10-25 | Weber Rainer | Steinkorb |
DE202006002393U1 (de) | 2006-02-14 | 2007-06-21 | H. Geiger Gmbh Stein- Und Schotterwerke | Transportable Vorrichtung zur Aufnahme von Steinen und Pflanzen |
DE202013011453U1 (de) | 2013-12-23 | 2014-02-25 | Wolfgang Deutschle | Gabione mit Hubösen |
EP3073017A1 (fr) | 2015-03-27 | 2016-09-28 | Metallurgica Ledrense - Societa Cooperativa | Gabion |
Also Published As
Publication number | Publication date |
---|---|
FR3083551A1 (fr) | 2020-01-10 |
JP2021529276A (ja) | 2021-10-28 |
FR3083551B1 (fr) | 2020-12-25 |
CA3104866A1 (fr) | 2020-01-09 |
EP3818212A1 (fr) | 2021-05-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1662050B1 (fr) | Ouvrage en sol renforcé et éléments de parement pour sa construction | |
EP2352884B1 (fr) | Ouvrage en sol renforce et elements de parement pour sa construction | |
WO2020008136A1 (fr) | Système de protection contre un impact | |
FR2860811A1 (fr) | Ouvrage en sol renforce et procede pour sa construction | |
WO2006114547A1 (fr) | Dispositif allonge pour les amenagements maritimes et fluviaux et son procede de fabrication | |
EP1881114A2 (fr) | Procédé de fabrication d'un élément individuel de construction rempli destiné à un ouvrage de génie civil | |
FR2910029A1 (fr) | Ouvrage de protection avec un systeme dissipatif. | |
CN101225634B (zh) | 一种轻质高强路面器材 | |
EP3230509A1 (fr) | Géosynthétique de renforcement de sol à comportement multi-module | |
EP2317014B1 (fr) | Ensemble pour la réalisation d'un ouvrage | |
EP2356292B1 (fr) | Procede de realisation d'une piece en beton arme et piece ainsi realisee | |
CA3188111A1 (fr) | Structure d'absorption d'une energie d'impact | |
EP0377541B1 (fr) | Procédé et dispositif pour l'ancrage des écailles d'un mur en terre armée | |
EP2655750B1 (fr) | Procédé de modification d'un ouvrage en sol renforcé | |
EP2317013B1 (fr) | Gabion et ensemble d'au moins deux gabions | |
EP3411531B1 (fr) | Dispositif modulaire pour la formation d'un point d'ancrage au sol | |
FR2910028A1 (fr) | Ouvrage de protection destine a interrompre la progression libre de masses mobiles. | |
FR2824340A1 (fr) | Procede de realisation d'ouvrage de genie civil comprenant une couche renforcee | |
WO2015033378A1 (fr) | Corps de digue amortisseur | |
FR2703377A1 (fr) | Dispositif de stabilisation d'éléments de carapace de corps d'ouvrage. | |
FR2816648A1 (fr) | Armature pour ouvrage en terre renforcee | |
FR2921943A1 (fr) | Assemblage de renforts en geomateriau pour ouvrage en sol renforce, ouvrage et procede associes | |
FR2835266A1 (fr) | Procede de construction d'un ouvrage protecteur et ouvrage protecteur obtenu | |
WO2020161449A1 (fr) | Système et procédé de sécurisation contre l'impact d'objets | |
FR3065471A1 (fr) | Ouvrage comportant au moins une arche et procede de fabrication associe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19753140 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 3104866 Country of ref document: CA |
|
ENP | Entry into the national phase |
Ref document number: 2021500071 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2019753140 Country of ref document: EP Effective date: 20210203 |