EP0570225A1 - Garde-corps de sécurité - Google Patents
Garde-corps de sécurité Download PDFInfo
- Publication number
- EP0570225A1 EP0570225A1 EP93303710A EP93303710A EP0570225A1 EP 0570225 A1 EP0570225 A1 EP 0570225A1 EP 93303710 A EP93303710 A EP 93303710A EP 93303710 A EP93303710 A EP 93303710A EP 0570225 A1 EP0570225 A1 EP 0570225A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rail
- spacer
- fastener
- post
- parapet
- 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.)
- Ceased
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
-
- 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
- E01F15/0407—Metal rails
- E01F15/0423—Details of rails
- E01F15/043—Details of rails with multiple superimposed members; Rails provided with skirts
-
- 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
- E01F15/0476—Foundations
Definitions
- the present invention relates to safety parapets of the kind used on road bridges and at road edges to prevent vehicles leaving the road should their drivers, for any reason, lose control of them and in particular to a parapet comprising at least two posts and a rail extending between them, the rail being secured to at least one post by means of an elongate fastener having an enlarged head and a body of smaller transverse dimension, the head of the fastener being received in a recess formed in the rail, the recess having a relatively large part in which the head is located with the body of the fastener projecting through a relatively narrow opening towards the post, the free end of the fastener engaging the post to secure the rail to it.
- Safety parapets currently in use mostly consist of a relatively simple arrangement of posts and rails secured together and to the ground so as to form a net-like construction which will retain an out-of-control vehicle without breaking. It will be apparent that, for such a construction, it is important that the joints between the components from which the parapet is formed are sufficiently strong and reliable that there is little risk of the parapet construction coming apart when struck by a vehicle. It is not sufficient that the posts and rails be strong, although this is also, of course, of importance.
- At least one existing parapet system in use at present uses posts and rails of hollow cross-section, the rails being bolted to flanges formed on the posts. With this arrangement, the heads of the bolts used to fasten the posts and rails together are retained in T-shaped or keyhole-type slots formed in the rear of the rails where they abut the posts. The other ends of the bolts pass through the posts and are secured with suitable nuts.
- the safety parapet is characterized in that there is disposed between the post and the rail a spacer through which the fastener passes and which has an abutment surface which abuts the rail so as to oppose deformation of the rail in the region of the recess, the spacer abutting the rail across the entire transverse dimension thereof and having a flange extending at an angle to the abutment surface, the flange fitting closely, in use, against a longitudinal surface of the rail.
- the spacer may have two such flanges arranged to fit closely against opposite longitudinal surfaces of the rail.
- the parapet of the invention is characterized in that there is disposed between the post and the rail a spacer through which the fastener passes; the spacer being provided with at least one projecting lug shaped to be received and retained in the recess formed in the rail so as to secure the spacer to the rail.
- the spacer has two sets of projecting lugs spaced along a line and parallel to one another; the lugs of one set being aligned with the lugs of the other set.
- a safety parapet 10 in accordance with the invention comprises a plurality of generally vertical, spaced posts 20, between which extend a number, in this case, three, continuous rails 30.
- the posts 20, as can be seen from Figures 2 and 3, are generally rectangular in cross-section and are hollow. Each hollow section is formed from two U-shape sections 22 and 24 welded together at points 23 part way along the longer sides of the rectangular cross-section.
- the section 24, which, in use, is adjacent the rails 30, is so shaped that the shorter side of the rectangular cross-section is extended on each side to form an outwardly directed flange 26.
- each post 20 has a generally flat aluminium base plate 25 with bolt holes by means of which the post 20 can be secured to a suitably firm foundation.
- the vertical rectangular hollow section is welded, as indicated at 28, to the base plate 25 around its entire periphery.
- the base plate 25 is formed with a transverse step 21 against which the post 20 can be positioned.
- the post 20 is closed by means of a cap 29.
- the rail 30 is formed as a hollow extruded aluminium section. At the side of the rail 30, which in use faces the posts 20, the extrusion is shaped to define two parallel longitudinally-extending T-section slots 32.
- the slots 32 are dimensioned so that the broad part 33 of the slot will accept the head 52 of a fixing bolt 50 with the shaft of the bolt protruding through the narrow opening 34 of the slot towards the posts 20.
- the other ends of the bolts 50 pass through holes formed in the outwardly-directed flanges 26 on the posts 20 to secure the rails 30 to the posts 20.
- An elongate aluminium two-hole flat washer 51 is interposed between the securing nuts 53 and the flange 26 to give greater security.
- the lips 35 which define the narrow opening 34 of the slots 32 serve to retain the bolts 50 in engagement with the rails 30.
- the existing parapets which use this arrangement of T-shaped slots 32 to capture the bolt heads 52 in the rail 30, may fail in exactly the circumstances in which it is most important that they should not do so.
- the lips 35 deform sufficiently to allow the bolt heads 52 to escape from the slots 32 and, hence, to permit the rail 30 to separate from the post 20.
- the main area of deformation is at the points marked A on Figure 4, the lips 35 tending to bend outwards in the direction of arrows B.
- the safety parapet includes a spacer bracket 40 which is interposed between the rail 30 and the post 20.
- the spacer bracket 40 is generally of rectangular C-shaped cross-section with inwardly directed flanges 42 at its open side.
- the flanges 42 abut, in use, against the post 20 and are provided with through holes 43 aligned with the holes in the flanges 26 on the post 20 through which the bolt 50 passes.
- the spacer bracket 40 is provided with a further set of holes 44 opposite the holes 43 so that the bolts can pass right through the spacer 40.
- the wall 45 of the spacer 40 is also extended transversely of the rail 30 so that it extends the full width of the rail 30 and then is turned to form a pair of parallel flanges 46 which extend away from the post 20 to lie close to the upper and lower surfaces of the rail 30.
- the close fit of the flanges 46 around the rail 30 helps to keep the lips 35 undistorted at the point A where they are most likely to bend under a load.
- the spacer 40 is held firmly by the bolts 50 so that it 'embraces' the edge of the rail 30. This engagement substantially reduces the likelihood of the lips 35 defining the T-shaped slots 32, bending out of shape and, hence, allowing the bolt heads 52 to escape from the slots and the rail 30 to separate from the posts 20.
- Figures 5, 6 and 7 show a modified spacer bracker 60 similar to that of Figure 4 but capable of providing even greater security.
- the spacer bracket 60 is generally C-shaped construction with inwardly directed flanges 62 at its open side which, in use, abut, and are secured to, the post 20.
- the spacer bracket 60 is secured to the post 20 by means of bolts 50 as described above.
- the flanges 56 which embrace the rail 30 are, however, of more substantial construction than the flanges 46 of the spacer bracket 40.
- the flanges 56 are formed as extensions of the side walls 55 of the C-shaped structure which abuts the post 20.
- the flanges 56 are provided with through holes 58 opposite one another.
- a tie in the form of a bolt 70 passes through the holes 58 in the flanges 56 and through suitable openings in the rail 30 and is secured by means of a locking nut 72.
- the bolt 70 serves to secure the rail 30 even more securely to the spacer bracket 60 and, hence, to the post 20.
- the spacer bracket 60 is provided with a plurality of T-section lugs 63 which are shaped to fit into and be retained by the T-section slots 32 in the rail 30.
- the lugs 63 are spaced longitudinally so that the heads of the bolts 50 can be located between them as shown in Figure 8.
- the bolts 50 are passed through the holes in the spacer bracket 60 and then the lugs 63 and bolt heads are slid into the T-section slots 32 in the rail 30 from the end of the rail 30.
- the bolts 50 can then be secured to flanges 26 of the posts 20.
- the two sets of lugs 63 which fit into the two T-section slots 32 are arranged so that the lugs 63 of one set are aligned with the lugs of the other and thus the gaps between them in which the heads of the bolts 50 locate are also aligned.
- Figure 9 shows a spacer 90 which is less secure than that of Figure 5 but which is still capable of performing adequately where lower standards are acceptable.
- the spacer 90 can be viewed as a hybrid of those shown in Figures 4 and 5.
- the spacer 90 comprises a flat plate 91 which is interposed, in use, between the post 20 and the rail 30. At opposite edges, the plate 91 is provided with flanges 96 which extend generally perpendicularly to the plate 91. The flanges 96 fit closely along opposite parallel faces of the rail 30 in a similar manner to the flanges 46 of the spacer 40 and flanges 56 of spacer bracket 60, described above.
- the plate 91 is also provided with T-section lugs 93 which locate in the T-shaped cross-section slots 32 in the rail 30 in a similar manner to the lugs 63 shown in Figure 5.
- the interengagement of the lugs 93 in the slots 32 helps to secure the spacer 90 to the rail 30.
- the plate 91 is then secured to the flanges 26 of the post 20 by means of bolts 100.
- the bolts 100 whose heads are also received in the T-section slots 32 in the rail 30, are spaced longitudinally from the lugs 93.
- spacer 90 which is of simpler construction than spacer 60 shown in Figure 5 (not having a C-section body or bolts passing through the flanges 96 to secure them to the rail), is considerably cheaper to manufacture.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Body Structure For Vehicles (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9210478 | 1992-05-15 | ||
GB929210478A GB9210478D0 (en) | 1992-05-15 | 1992-05-15 | Safety parapet |
GB9225456 | 1992-12-04 | ||
GB929225456A GB9225456D0 (en) | 1992-05-15 | 1992-12-04 | Safety parapet |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0570225A1 true EP0570225A1 (fr) | 1993-11-18 |
Family
ID=26300890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93303710A Ceased EP0570225A1 (fr) | 1992-05-15 | 1993-05-13 | Garde-corps de sécurité |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0570225A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1624111A2 (fr) | 2004-08-04 | 2006-02-08 | Hierros y Aplanaciones, S.A. (HIASA) | Système pour la rétention de véhicules dans des chocs latérales, avec d'un grande capacité de rétention et d'absorption |
WO2006109019A1 (fr) * | 2005-04-12 | 2006-10-19 | Varley And Gulliver Limited | Parapet multi-rails |
GB2457612A (en) * | 2004-10-27 | 2009-08-26 | Varley And Gulliver Ltd | Parapet rail support system with cleat |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3258250A (en) * | 1963-07-17 | 1966-06-28 | Reynolds Metals Co | Railing construction |
GB1396301A (en) * | 1971-04-20 | 1975-06-04 | British Aluminium Co Ltd | Highway crash barriers |
EP0216712A1 (fr) * | 1985-08-27 | 1987-04-01 | L'EQUIPEMENT ROUTIER, Société Anonyme dite: | Barrière métallique, notamment pour l'équipement de voies de circulation routière |
-
1993
- 1993-05-13 EP EP93303710A patent/EP0570225A1/fr not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3258250A (en) * | 1963-07-17 | 1966-06-28 | Reynolds Metals Co | Railing construction |
GB1396301A (en) * | 1971-04-20 | 1975-06-04 | British Aluminium Co Ltd | Highway crash barriers |
EP0216712A1 (fr) * | 1985-08-27 | 1987-04-01 | L'EQUIPEMENT ROUTIER, Société Anonyme dite: | Barrière métallique, notamment pour l'équipement de voies de circulation routière |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1624111A2 (fr) | 2004-08-04 | 2006-02-08 | Hierros y Aplanaciones, S.A. (HIASA) | Système pour la rétention de véhicules dans des chocs latérales, avec d'un grande capacité de rétention et d'absorption |
EP1624111A3 (fr) * | 2004-08-04 | 2006-03-15 | Hierros y Aplanaciones, S.A. (HIASA) | Système pour la rétention de véhicules dans des chocs latérales, avec d'un grande capacité de rétention et d'absorption |
GB2457612A (en) * | 2004-10-27 | 2009-08-26 | Varley And Gulliver Ltd | Parapet rail support system with cleat |
WO2006109019A1 (fr) * | 2005-04-12 | 2006-10-19 | Varley And Gulliver Limited | Parapet multi-rails |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
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17P | Request for examination filed |
Effective date: 19940504 |
|
17Q | First examination report despatched |
Effective date: 19950426 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
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18R | Application refused |
Effective date: 19951019 |