EP0620322A1 - Post for a guardrail for roads or highways - Google Patents

Post for a guardrail for roads or highways Download PDF

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Publication number
EP0620322A1
EP0620322A1 EP94400282A EP94400282A EP0620322A1 EP 0620322 A1 EP0620322 A1 EP 0620322A1 EP 94400282 A EP94400282 A EP 94400282A EP 94400282 A EP94400282 A EP 94400282A EP 0620322 A1 EP0620322 A1 EP 0620322A1
Authority
EP
European Patent Office
Prior art keywords
core
upright
post
sole
section
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.)
Granted
Application number
EP94400282A
Other languages
German (de)
French (fr)
Other versions
EP0620322B1 (en
Inventor
Olivier Résidence Le Cap Rousset Datry
Jean-Paul Delessert
Didier Engel
Pascal Patou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sollac SA
Original Assignee
Sollac SA
Lorraine de Laminage Continu SA SOLLAC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sollac SA, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA
Publication of EP0620322A1 publication Critical patent/EP0620322A1/en
Application granted granted Critical
Publication of EP0620322B1 publication Critical patent/EP0620322B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0461—Supports, e.g. posts

Definitions

  • the invention relates to a railing post for a road or motorway safety barrier.
  • the known posts Due to their square section, the known posts must have a wall of significant thickness to have mechanical strength, and in particular sufficient buckling resistance; consequently, the posts according to the prior art are very heavy, which is a drawback for their installation.
  • the object of the invention is to remedy this drawback by proposing a heavy railing post for road or motorway safety barrier which, while having mechanical behavior at least as good as that of known posts, is lighter and therefore easier to transport.
  • the subject of the invention is a heavy railing post for a road or motorway safety barrier of the type comprising a support base on the ground and an upright and the upright of which comprises a core and at least one sole applied against a peripheral part of the core, so that the upright has a cross section having substantially the shape of an I.
  • x is the distance, in a longitudinal direction of the upright, of any cross section of the web at one end of the upright constituting the top of the post and y the width of the web at the level of said section in the transverse direction
  • y is proportional to the square root of x.
  • the pole may then have only a sole which surrounds the core on at least part of its periphery.
  • the post may further include a reinforcing element at a connection zone between the base and the at least one sole.
  • the base, the core, the at least one sole and the reinforcement are parts cut from a steel sheet and assembled by welding.
  • the steel sheet from which each of the parts is cut is a steel sheet with a high weldable yield strength, with a yield strength greater than 600 MPa.
  • the post generally marked with 1 in FIG. 1 comprises a base 2 pierced with holes 3 intended to allow anchor studs to pass into the ground, and an upright 4 perpendicular to the sole and fixed on it.
  • the upright 4 has a core 5 whose rear edge 6 is of parabolic shape and the right front edge.
  • the core 5 is surrounded by a sole 7 added against its front and rear edges.
  • Reinforcement 8 is attached on the one hand on the front face 9 of the sole 7 and on the other hand on the base 2.
  • the different parts are cut from steel sheets with high weldable elastic limit of elastic limit greater than 600 MPa and assembled by welding along the junction edges such as 10 , 12, 13, 14, 15.
  • This post with equal resistance to shock and buckling, is 40% lighter than a post according to the prior art.
  • the upright of the post may consist of an I-section laminated or produced by mechanical welding; it then comprises a core and two soles.
  • the essential characteristic of the post is the I-shaped section of the upright which makes it possible to obtain a significant buckling resistance with a low weight.
  • the parabolic shape of the core allows additional lightening by constituting a so-called constant resistance beam, that is to say whose external contour makes it possible to follow the distribution of the stresses in the event of impact.
  • Such posts are fixed on the edge of overhead road structures such as bridges and support beams which form safety barriers.
  • the healds are fixed for example by bolting to the front face 9 of the sole which is substantially flat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Bridges Or Land Bridges (AREA)
  • Building Environments (AREA)
  • Tents Or Canopies (AREA)
  • Road Signs Or Road Markings (AREA)
  • Road Paving Structures (AREA)

Abstract

The post (1) comprises a base (2) for bearing on the ground and an upright (4). The upright (4) comprises a web (5) and at least one plate (7) attached against a peripheral part of the web (5), so that the upright (4) has a cross-section having substantially the shape of an I. <IMAGE>

Description

L'invention concerne un poteau garde-corps pour barrière de sécurité de route ou d'autoroute.The invention relates to a railing post for a road or motorway safety barrier.

Les barrières de sécurité d'autoroute et notamment celles qui sont placées en bordure des ouvrages d'art aériens tels que les ponts ou les viaducs doivent pouvoir résister à des chocs très violents provoqués par des véhicules lourds. Ces barrières sont constituées en général de trois lisses supportées par des poteaux tubulaires de section carrée ancrés dans le béton.Motorway safety barriers and in particular those placed on the edge of aerial structures such as bridges or viaducts must be able to withstand very violent shocks caused by heavy vehicles. These barriers generally consist of three beams supported by tubular posts of square section anchored in the concrete.

Du fait de leur section carrée, les poteaux connus doivent avoir une paroi d'épaisseur importante pour présenter une résistance mécanique, et notamment une résistance au flambement suffisante ; en conséquence, les poteaux suivant l'art antérieur sont très lourds, ce qui est un inconvénient pour leur pose.Due to their square section, the known posts must have a wall of significant thickness to have mechanical strength, and in particular sufficient buckling resistance; consequently, the posts according to the prior art are very heavy, which is a drawback for their installation.

L'invention a pour but de remédier à cet inconvénient en proposant un poteau garde-corps lourd pour barrière de sécurité de route ou d'autoroute qui, tout en ayant un comportement mécanique au moins aussi bon que celui des poteaux connus, soit plus léger et donc plus facile à transporter.The object of the invention is to remedy this drawback by proposing a heavy railing post for road or motorway safety barrier which, while having mechanical behavior at least as good as that of known posts, is lighter and therefore easier to transport.

A cet effet, l'invention a pour objet un poteau garde-corps lourd pour barrière de sécurité de route ou d'autoroute du type comprenant un socle d'appui au sol et un montant et dont le montant comporte une âme et au moins une semelle rapportée contre une partie périphérique de l'âme, de manière que le montant présente une section transversale ayant sensiblement la forme d'un I.To this end, the subject of the invention is a heavy railing post for a road or motorway safety barrier of the type comprising a support base on the ground and an upright and the upright of which comprises a core and at least one sole applied against a peripheral part of the core, so that the upright has a cross section having substantially the shape of an I.

De préférence, si x est la distance, suivant une direction longitudinale du montant, d'une section transversale quelconque de l'âme à une extrémité du montant constituant le sommet du poteau et y la largeur de l'âme au niveau de ladite section dans la direction transversale, y est proportionnel à la racine carrée de x. Le poteau peut alors ne comporter qu'une semelle qui entoure l'âme sur une partie au moins de sa périphérie.Preferably, if x is the distance, in a longitudinal direction of the upright, of any cross section of the web at one end of the upright constituting the top of the post and y the width of the web at the level of said section in the transverse direction, y is proportional to the square root of x. The pole may then have only a sole which surrounds the core on at least part of its periphery.

Le poteau peut comporter en outre un élément de renfort au niveau d'une zone de liaison entre le socle et l'au moins une semelle.The post may further include a reinforcing element at a connection zone between the base and the at least one sole.

De préférence, le socle, l'âme, l'au moins une semelle et le renfort, sont des pièces découpées dans une tôle d'acier et assemblées par soudage.Preferably, the base, the core, the at least one sole and the reinforcement, are parts cut from a steel sheet and assembled by welding.

De préférence également, la tôle d'acier dans laquelle chacune des pièces est découpée, est une tôle en acier à haute limite d'élasticité soudable, de limite d'élasticité supérieure à 600 MPa.Preferably also, the steel sheet from which each of the parts is cut, is a steel sheet with a high weldable yield strength, with a yield strength greater than 600 MPa.

L'invention va maintenant être décrite de façon plus précise mais non limitative en regard des figures annexées dans lesquelles :

  • La figure 1 est une vue en perspective d'un poteau suivant l'invention ;
  • La figure 2 est une vue en coupe verticale schématique du poteau montrant la forme géométrique de l'âme.
The invention will now be described in a more precise but nonlimiting manner with regard to the appended figures in which:
  • Figure 1 is a perspective view of a post according to the invention;
  • Figure 2 is a schematic vertical sectional view of the post showing the geometric shape of the core.

Le poteau repéré généralement par 1 sur la figure 1 comporte un socle 2 percé de trous 3 destinés à laisser passer des goujons d'ancrage dans le sol, et un montant 4 perpendiculaire à la semelle et fixé sur elle.The post generally marked with 1 in FIG. 1 comprises a base 2 pierced with holes 3 intended to allow anchor studs to pass into the ground, and an upright 4 perpendicular to the sole and fixed on it.

Le montant 4 comporte une âme 5 dont l'arête arrière 6 est de forme parabolique et l'arête avant droite.The upright 4 has a core 5 whose rear edge 6 is of parabolic shape and the right front edge.

Si O est le sommet du montant, x la distance au sommet d'une section transversale AB quelconque de l'âme suivant la direction du montant 4 et y la largeur de l'âme au niveau de la section transversale AB : OA = x, AB = y, on a : y : k √x.If O is the top of the upright, x the distance to the top of any cross section AB of the core in the direction of the upright 4 and y the width of the core at the cross section AB: OA = x, AB = y, we have: y: k √x.

L'âme 5 est entourée par une semelle 7 rapportée contre ses bords avant et arrière. Un renfort 8 est fixé d'une part sur la face avant 9 de la semelle 7 et d'autre part sur le socle 2.The core 5 is surrounded by a sole 7 added against its front and rear edges. Reinforcement 8 is attached on the one hand on the front face 9 of the sole 7 and on the other hand on the base 2.

Les différentes pièces (socle 2, âme 5, semelle 7, renfort 8) sont découpées dans des tôles en acier à haute limite élastique soudable de limite d'élasticité supérieure à 600 MPa et assemblées par soudage le long des arêtes de jonction telles que 10, 12, 13, 14, 15.The different parts (base 2, core 5, sole 7, reinforcement 8) are cut from steel sheets with high weldable elastic limit of elastic limit greater than 600 MPa and assembled by welding along the junction edges such as 10 , 12, 13, 14, 15.

Ce poteau, à résistance égale au choc et au flambement, est de 40 % plus léger qu'un poteau selon l'art antérieur.This post, with equal resistance to shock and buckling, is 40% lighter than a post according to the prior art.

Dans un autre mode de réalisation, le montant du poteau peut être constitué d'un profilé en I laminé ou réalisé par mécanosoudure ; il comporte alors une âme et deux semelles.In another embodiment, the upright of the post may consist of an I-section laminated or produced by mechanical welding; it then comprises a core and two soles.

La caractéristique essentielle du poteau est la section en I du montant qui permet d'obtenir une résistance au flambement importante avec un poids faible. La forme parabolique de l'âme permet un allègement supplémentaire en constituant une poutre dite à résistance constante, c'est-à-dire dont le contour externe permet de suivre la répartition des contraintes en cas de choc.The essential characteristic of the post is the I-shaped section of the upright which makes it possible to obtain a significant buckling resistance with a low weight. The parabolic shape of the core allows additional lightening by constituting a so-called constant resistance beam, that is to say whose external contour makes it possible to follow the distribution of the stresses in the event of impact.

De tels poteaux sont fixés en bordure des chaussées d'ouvrage d'art aériens tels que des ponts et supportent des lisses qui forment des barrières de sécurité. Les lisses sont fixées par exemple par boulonnage sur la face avant 9 de la semelle qui est sensiblement plane.Such posts are fixed on the edge of overhead road structures such as bridges and support beams which form safety barriers. The healds are fixed for example by bolting to the front face 9 of the sole which is substantially flat.

Ces poteaux sont particulièrement adaptés aux barrières normales définies dans la circulaire 88-49 du 9 mai 1988 du Ministère de l'Equipement français mais ils peuvent être adaptés aux barrières légères et lourdes définies par la même circulaire.These posts are particularly suitable for normal barriers defined in circular 88-49 of May 9, 1988 of the French Ministry of Equipment, but they can be adapted to light and heavy barriers defined by the same circular.

Claims (6)

1.- Poteau garde-corps pour barrières de sécurité de routes ou d'autoroutes du type comprenant un socle (2) d'appui au sol et un montant (4) caractérisé en ce que le montant (4) comporte une âme (5) et au moins une semelle (7) rapportée contre une partie périphérique de l'âme (5), de manière que le montant (4) présente une section transversale ayant sensiblement la forme d'un I. 1.- Guardrail post for road or motorway safety barriers of the type comprising a base (2) for supporting the ground and an upright (4) characterized in that the upright (4) comprises a core (5 ) and at least one sole (7) added against a peripheral part of the core (5), so that the upright (4) has a cross section having substantially the shape of an I. 2.- Poteau selon la revendication 1, caractérisé en ce que, si x est la distance suivant une direction longitudinale du montant (4) d'une section transversale quelconque de l'âme (5) à une extrémité longitudinale du montant (4) constituant le sommet du poteau (1) et y la largeur de l'âme (5) au niveau de ladite section dans une direction transversale, Y est proportionnel à la racine carrée de x. 2. A post according to claim 1, characterized in that, if x is the distance in a longitudinal direction of the upright (4) of any cross section of the core (5) to a longitudinal end of the upright (4) constituting the top of the post (1) and y the width of the core (5) at the level of said section in a transverse direction, Y is proportional to the square root of x. 3.- Poteau selon la revendication 2, caractérisé en ce qu'il comporte une seule semelle (7, 9) qui entoure l'âme (5) sur une partie au moins de sa périphérie. 3. A post according to claim 2, characterized in that it comprises a single sole (7, 9) which surrounds the core (5) on at least part of its periphery. 4.- Poteau selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte en outre un élément de renfort (8) au niveau d'une zone de liaison entre le socle (2) et l'au moins une semelle (7, 9). 4.- Pole according to any one of the preceding claims, characterized in that it further comprises a reinforcing element (8) at a connection zone between the base (2) and the at least one sole (7, 9). 5.- Poteau selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments : socle (2), âme (5), semelle (7, 9) et renfort (8) du poteau (1) sont constitués au moins partiellement par des pièces découpées dans une tôle d'acier et assemblées par soudage. 5.- Pole according to any one of the preceding claims, characterized in that the elements: base (2), core (5), sole (7, 9) and reinforcement (8) of the pole (1) consist at least partially by pieces cut from a steel sheet and assembled by welding. 6.- Poteau selon la revendication 5, caractérisé en ce que la tôle d'acier dans laquelle chacune des pièces est découpée est une tôle en acier à haute limite d'élasticité soudable de limite d'élasticité supérieure à 600 MPa. 6. A post according to claim 5, characterized in that the steel sheet in which each of the parts is cut is a steel sheet with a high weldable elastic limit with an elastic limit greater than 600 MPa.
EP94400282A 1993-03-30 1994-02-09 Post for a guardrail for roads or highways Expired - Lifetime EP0620322B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9303681A FR2703375B1 (en) 1993-03-30 1993-03-30 GUARDRAIL POST FOR ROAD OR MOTORWAY SAFETY BARRIER.
FR9303681 1993-03-30

Publications (2)

Publication Number Publication Date
EP0620322A1 true EP0620322A1 (en) 1994-10-19
EP0620322B1 EP0620322B1 (en) 1996-06-05

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ID=9445514

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94400282A Expired - Lifetime EP0620322B1 (en) 1993-03-30 1994-02-09 Post for a guardrail for roads or highways

Country Status (5)

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EP (1) EP0620322B1 (en)
AT (1) ATE138994T1 (en)
DE (1) DE69400227T2 (en)
ES (1) ES2088696T3 (en)
FR (1) FR2703375B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2800760A1 (en) * 1999-11-08 2001-05-11 Lorraine Laminage Bollard for road barrier has triangular panel with returned flanges forming I-shaped cross section
EP1561863A1 (en) * 2004-02-06 2005-08-10 METALMECCANICA FRACASSO S.p.A. Guardrail

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2032496A (en) * 1978-10-13 1980-05-08 Nippon Light Metal Co Post for a guard rail
EP0216712A1 (en) * 1985-08-27 1987-04-01 L'EQUIPEMENT ROUTIER, Société Anonyme dite: Metal guard barriers, especially for equipping road traffic lanes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2032496A (en) * 1978-10-13 1980-05-08 Nippon Light Metal Co Post for a guard rail
EP0216712A1 (en) * 1985-08-27 1987-04-01 L'EQUIPEMENT ROUTIER, Société Anonyme dite: Metal guard barriers, especially for equipping road traffic lanes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2800760A1 (en) * 1999-11-08 2001-05-11 Lorraine Laminage Bollard for road barrier has triangular panel with returned flanges forming I-shaped cross section
EP1561863A1 (en) * 2004-02-06 2005-08-10 METALMECCANICA FRACASSO S.p.A. Guardrail

Also Published As

Publication number Publication date
DE69400227T2 (en) 1996-10-10
EP0620322B1 (en) 1996-06-05
ATE138994T1 (en) 1996-06-15
DE69400227D1 (en) 1996-07-11
FR2703375A1 (en) 1994-10-07
FR2703375B1 (en) 1995-06-30
ES2088696T3 (en) 1996-08-16

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