GB2451469A - Base pad for crash barrier - Google Patents
Base pad for crash barrier Download PDFInfo
- Publication number
- GB2451469A GB2451469A GB0714873A GB0714873A GB2451469A GB 2451469 A GB2451469 A GB 2451469A GB 0714873 A GB0714873 A GB 0714873A GB 0714873 A GB0714873 A GB 0714873A GB 2451469 A GB2451469 A GB 2451469A
- Authority
- GB
- United Kingdom
- Prior art keywords
- base pad
- barrier
- engaging surface
- pad according
- resilient
- 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
Links
- 230000004888 barrier function Effects 0.000 title claims abstract description 79
- 239000000463 material Substances 0.000 claims abstract description 13
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 239000012858 resilient material Substances 0.000 claims abstract description 8
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 3
- 239000010959 steel Substances 0.000 claims abstract description 3
- 244000273618 Sphenoclea zeylanica Species 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000037431 insertion Effects 0.000 description 6
- 238000003780 insertion Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
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
- E01F15/0453—Rails of materials other than metal or concrete, e.g. wood, plastics; Rails of different materials, e.g. rubber-faced metal profiles, concrete-filled steel tubes
-
- 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
- E01F15/085—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 using metal
-
- 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
- E01F15/086—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 using plastic, rubber or synthetic materials
-
- 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
- E01F15/10—Continuous barriers extending along roads or between traffic lanes portable, e.g. for temporary use not used
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The base pad 1, primarily for crash barriers such as those used to divide contra-flowing lanes of traffic, comprises a length of resilient material having a road-engaging surface 3 and a barrier engaging-surface and includes a plurality of air pockets 5 located, in use, between the road-engaging and the barrier-engaging surfaces. The road-engaging surface is preferably flat. The air pockets may comprise the spaces between a number of protrusions on the barrier-engaging surface or alternatively the pad may be formed from a sponge-like material. The resilient material may comprise rubber or a thermoplastic elastomer (PET). The pad may be secured via mounting apertures or by two or more arms configured to hook around a barrier. Alternatively the pad may be moulded to a steel plate or extruded directly onto a crash barrier. Also claimed are a base pad for a crash barrier comprising a locking system and a separating tool for inserting or extracting a resilient locking element into a crash barrier.
Description
1 2451469
BASE PAD FOR A CRASH BARRIER
This invention relates to temporary and portable crash barriers of the sort typically used to divide contra-flowing lanes of traffic on roads which are being repaired, maintained or altered. In particular, the invention relates to a base pad for securing to the road facing surface of such barriers.
Existing road barriers are provided with solid rubber pads secured by mechanical or adhesive means to the road facing surface of the barrier. Whilst serving some purpose in improving shear grip between the road surface and the barrier in the event of a moving vehicle colliding with the barrier and in reducing marking of the road by the temporary barriers, some inadequacies have been identified with this solution.
Existing pads do not adapt well to uneven road surfaces, since it is impractical to provide bespoke pads moulded to fit the contour of a given portion of road surface.
Thus, existing pads are found to make only partial contact with an uneven road surface and the resulting high pressure of the barrier weight transmitted through the relatively small contact area causes indentations in the road surface. It is necessary to redesign the pads to make them Individually more adaptable to variations in the * S. * road surface. S... * * S...
* It has also been observed that when located on uneven road surfaces, some ** separation can occur between the road facing surface of the pad and the road surface. **.
* If a vehicle runs onto the improperly aligned barrier and pad, this may result in : abrupt separation of the pad and barrier causing a hazard for oncoming traffic. *.S. S..
The present invention seeks to address these shortfalls and provide a more securely fitted and adaptable pad without compromise to performance.
In accordance with the present invention there is provided a base pad for a crash barrier comprising a length of resilient material having a road engaging surface and a barrier engaging surface and including a plurality of air pockets located, in use, between the road engaging surface of the pad and the barrier engaging surface of the pad.
A base pad with air pockets can adjust to an uneven road surface on which it rests and will spread the load sufficiently to avoid marking of the road surface.
Preferably, the road engaging surface of the base pad is substantially flat.
A flat road engaging surface provides the maximum contact area between the base pad and the road thus minimising the road contact pressure.
Optionally, the base pad comprises a plurality of protrusions on the barrier engaging surface of the pad with the air pockets formed between the protrusions.
A barrier engaging surface with air pockets formed between protrusions provides improved resilience such that the base pad can adjust to an uneven surface whilst keeping the weight of the pad to a minimum.
*:*::* Optionally, the plurality of air pockets are located in a sponge-like material. S...
***** Preferably, the resilient material comprises rubber. * SS
Alternatively, the resilient material comprises a thermoplastic elastomer (TPE).
S
The base pad may be secured to the barrier by any of a variety of means. S...
S 5*
For example, the base pad may include one or more mounting apertures for engaging with mounting means on the opposing barrier surface.
Alternatively, the base pad comprises a layer of adhesive on the barrier engaging surface.
Alternatively, the base pad comprises at least two arms configured to hook around a crash barrier.
By using arms configured to hook around a crash barrier the base pad can be fixed to a crash barrier without the use of separate fixing means.
Optionally, the base pad is moulded to a steel plate or the base pad is extruded directly onto the crash barrier.
In a second aspect of the present invention there is provided a base pad for a crash barrier comprising a resilient locking means wherein the resilient locking means comprises; a hollow stem which extends from a road engaging surface to a barrier engaging surface of the base pad; a head which extends laterally from the stem to protrude from the barrier engaging surface of the base pad; a locking insert which is less resilient than the stem and the head and is inserted into the stem.
A substantially rigid locking insert improves the security of the locking means *::::* and may also improve the transmission of the shear load of the base pad when it is : * fixed to a crash barrier. S...
I S..
* Preferably, the locking insert is cylindrical. S... 0**S
Preferably, the locking insert is annular.
Alternatively, the locking insert is substantially annular with a tapered inner bore.
Preferably the resilient locking means comprises a rubber material.
More preferably, the hollow stem; head and locking insert of the resilient locking means comprise a rubber or a plastics material of different grades.
A locking means made of a material such as rubber or of a plastics material will not cause damage to passing vehicles if the locking means is discarded on and rebounds from the road surface.
Still more preferably, the hollow stem; head and locking insert of the resilient locking means comprise a thermoplastic material of different grades.
The base pad may be of the configuration of that described in accordance with the first aspect of the invention.
In a further aspect of the present invention there is provided a separating tool for inserting or extracting a resilient locking means into a crash barrier wherein the separating tool is configured to compress the resilient locking.
A separating tool for compressing the locking means allows the locking means to be inserted more quickly into a crash barrier.
Preferably, the separating tool further comprises a lever. * **
By using a lever, increased force can be exerted to compress the locking * means. **** * ****
Preferably, the separating tool further comprises a hooking means configured to be received in at least one aperture of a crash barrier.
More preferably the separating tool comprises a two-pronged hooking means.
The invention will now be described by way of example with reference to the accompanying diagrammatic drawings, in which:-Figure 1 is a perspective view of a road engaging surface of a base pad constructed in accordance with the present invention; Figure 2 is a perspective view of a barrier engaging surface of a base pad constructed in accordance with the present invention; Figure 3 is a plan view of the barrier engaging surface of the base pad of Figure 2; FIgure 4 is a side view of the barrier engaging surface of the base pad of Figures 2 and 3; Figure 5a is a perspective view of a locking insert; Figure 5b is a side view of the locking insert of Figure 5a; Figure 5c is a plan view from above of the locking insert of Figures 5a and 5b; * ** * * * * ** *::::* Figure 6a is a plan view from above of a section of a barrier with base pads : * attached in accordance with the present invention; *.*. S..
* Figure 6b is a cross sectional view of a section of a barrier with a base pad : attached; S..
S S..
Figure 6c is a perspective view of a section of a barrier showing hook receiving apertures; Figures 7a-c are perspective views of an insertion tool in accordance with the present invention; and Figure 8 is a perspective view of an alternative embodiment of the base pad constructed in accordance with the present invention.
Referring to Figures 1 to 4, the base pad 1 comprises a road engaging surface 3 and a barrier engaging surface 5. The road engaging surface 3 is substantially flat.
The barrier engaging surface 5 comprises a plurality of upstanding ribs 7, between which are air pockets 9. Three mushroom-shaped locking means 11 extend through apertures in the pad 1 between the road engaging surface 3 and the barrier engaging surface 5. The locking means 11 comprises a hollow stem which extends through the pad 1 and a head 13 which extends laterally on the barrier engaging surface 5 of the pad. The locking means 11 are evenly spaced along the longitudinal axis of the base pad 1 with a separation between the locking means 11 of 276mm and a distance of 75mm between the end locking means 11 and the end of the base pad 1. The locking means 11 comprises a hollow stem and a head 13. The base pad I is made of a rubber material.
Referring to Figures 5 a-c, a locking insert 15 comprises a symmetrical annulus made of a rubber material, which is more rigid than that of the base pad 1 and than that of the locking means 11. As shown in Figure Sb, the locking insert 15 has an * ** * upper and lower protruding rim 17. The protruding rims 17 have edges 19 tapered at *::::* degrees to the walls of the locking insert 15. The inner bore 21 of the locking * ** insert 15 may be cylindrical and concentric with the outer face of the locking insert 15. In an alternative embodiment, the inner bore 21 may be tapered. S..
As shown in Figures 6a, in use, the base pad 1 is fixed to the barrier 23 by I...
* inserting the three locking means 11 of a pad 1 through holes in the barrier 23. With a base pad 1 positioned on a barrier 23 the head 13 of each of the three locking means 11 is forced through a respective hole in the barrier 23. The head 13 is compressed when it is forced through the hole in the barrier 23 and then extends or mushrooms" to hold the pad 1 in place with the head 13 abutting the barrier 23.
As shown in Figure 6b, following insertion of the locking means 11 into an aperture of the barrier 23, the locking insert 15 is inserted into the hollow stem of the locking means 11. The locking insert 15 secures the locking means 11 to the barrier 23.
As shown in Figure 6c, a barrier 23 comprises a central recess 25 on either side of which are hook receiving apertures 27.
Referring to Figures 7 a-c, an insertion tool 29 comprises a handle 31, a lever 33, a pad contact 35 and a hook receiver 37. The insertion tool 29 further includes a hook 39 which is removeably fixed to the hook receiver 37. The hook 39 comprises two prongs.
In use, with the base pad 1 in place on the barrier 23, the two prongs of the hook 39 of the insertion tool 29 are hooked into the respective apertures 27 on either side of the barrier recess 25 to provide a pivot point about which the insertion tool 29 is rotated. The rotation of the lever 33 is used to place the pad contact 35 in line with the locking means 11 on the road engaging surface 3 of the pad 1. The pad contact is used to force the head 15 of the locking means 11 of a base pad 1 through a hole in the barrier 23. As before, the head 13 is compressed when it is forced *:::* through the hole in the barrier 23 and then extends or "mushrooms" to hold the pad 1 * in place with the head 13 abutting the barrier 23. * IS
As shown in Figure 8, in an alternative embodiment of the invention, the base r pad 1 comprises a substantially flat road engaging surface 3 and a barrier engaging *:" surface 5. In this embodiment, the barrier engaging surface 5 is also substantially flat * and air pockets 9 are formed by channels 35 running transversely through the base pad 1. The base pad 1 further comprises hook shaped arms 37 which are formed integrally with the base pad 1. The base pad 1 is made of a rubber material.
in use, the base pad 1 is fixed to a barrier by "clip-fitting" the arms 37 to hook around the barrier. The base pad 1 is held in place without the use of any further locking means. Alternatively, the base pad can be configured without arms and can be fixed to the barrier by a layer of adhesive.
The above described embodiment has been given by way of example only, and the skilled reader will naturally appreciate that many variations could be made thereto without departing from the scope of the present invention. * S. * . * * *. S... * S S.-. S. S. S *5*S
S
S 5..
S S...
S S.. *
Claims (1)
- Claims 1. A base pad for a crash barrier comprising a length of resilient material having a road engaging surface and a barrier engaging surface and including a plurality of air pockets located, in use, between the road engaging surface of the pad and the barrier engaging surface of the pad.2. A base pad according to claim 1 wherein the road engaging surface of the base pad is substantially flat.3. A base pad according to claim 1 or claim 2 comprising a plurality of protrusions on the barrier engaging surface of the pad with the air pockets formed between the protrusions 4. A base pad according to claim 1 or claim 2 wherein the plurality of air pockets are located in a sponge-like material.5. A base pad according to any preceding claim wherein the resilient material comprises rubber. * *e.* 6. A base pad according to any of claims 1 to 4 wherein the resilient material comprises a thermoplastic elastomer (TPE).7. A base pad according to any preceding claim comprising one or more mounting S..* apertures for engaging with mounting means on the opposing barrier surface. I...*: 8. A base pad according to any of claims 1 to 6 comprising a layer of adhesive on the barrier engaging surface.9. A base pad according to any of claims 1 to 6 comprising at least two arms configured to hook around a crash barrier.10. A base pad according to any of claims 1 to 6 wherein the base pad is moulded to a steel plate.11. A base pad according to any of claims 1 to 6 wherein the base pad is extruded directly onto the crash barrier.13, A base pad for a crash barrier comprising a resilient locking means wherein the resilient locking means comprises; a hollow stem which extends from a road engaging surface to a barrier engaging surface of the base pad; a head which extends laterally from the stem to protrude from the barrier engaging surface of the base pad; a locking insert which is less resilient than the stem and the head and is inserted into the stem.14. A base pad according to claim 13 wherein the locking insert is cylindrical.15. A base pad according to claim 13 or claim 14 wherein the locking insert is annular. * *.16. A base pad according to any of claims 13 to 15 wherein the locking insert is S...substantially annular with a tapered inner bore.*: 17. A base according to any of claims 13 to 16 wherein the resilient locking means S..* comprises a rubber material. S...S e*.:. 18. A base pad according to claim 17 wherein the hollow stem; head and locking insert of the resilient locking means comprise rubber material of different grades.19. A base pad according to any of claims 13 to 16 wherein the hollow stem; head and locking insert of the resilient locking means comprise a plastics material of different grades.20. A separating tool for inserting or extracting a resilient locking means into a crash barrier wherein the separating tool is configured to compress the resilient locking means.21. A separating tool according to claim 20 wherein the separating tool further comprises a lever.22. A separating according to claim 20 or claim 21 wherein the separating tool further comprises a hooking means configured to be received in at least one aperture of a crash barrier.23. A separating tool according to any of claims 20 to 22 further comprising a two pronged hooking means.24. A base pad for a crash barrier substantially as hereinbefore described or referred to in Figures 1 to 6 and Figure 8.25. A separating tool substantially as hereinbefore described or referred to in Figure 7. * S. * S S * S* **S. * S S... * S. * S S S...S S..S S... S...S 5.5I
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0714873.7A GB2451469B (en) | 2007-07-31 | 2007-07-31 | Base pad for crash barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0714873.7A GB2451469B (en) | 2007-07-31 | 2007-07-31 | Base pad for crash barrier |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0714873D0 GB0714873D0 (en) | 2007-09-12 |
| GB2451469A true GB2451469A (en) | 2009-02-04 |
| GB2451469B GB2451469B (en) | 2012-08-29 |
Family
ID=38529025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0714873.7A Expired - Fee Related GB2451469B (en) | 2007-07-31 | 2007-07-31 | Base pad for crash barrier |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2451469B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568905A (en) * | 2016-02-01 | 2016-05-11 | 南京理工大学 | Lane change gate capable of relieving traffic jam |
| EP2597197A3 (en) * | 2011-11-28 | 2017-06-14 | Moravia Gesellschaft für Verkehrszeichen und Signalgläser mbH | Attenuation element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20100423U1 (en) * | 2001-01-11 | 2001-03-22 | Berghaus Peter Gmbh | Mobile steel bulkhead |
| GB2447531A (en) * | 2006-11-21 | 2008-09-17 | Hill & Smith Holdings Plc | Crash barrier beam |
-
2007
- 2007-07-31 GB GB0714873.7A patent/GB2451469B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20100423U1 (en) * | 2001-01-11 | 2001-03-22 | Berghaus Peter Gmbh | Mobile steel bulkhead |
| GB2447531A (en) * | 2006-11-21 | 2008-09-17 | Hill & Smith Holdings Plc | Crash barrier beam |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2597197A3 (en) * | 2011-11-28 | 2017-06-14 | Moravia Gesellschaft für Verkehrszeichen und Signalgläser mbH | Attenuation element |
| CN105568905A (en) * | 2016-02-01 | 2016-05-11 | 南京理工大学 | Lane change gate capable of relieving traffic jam |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2451469B (en) | 2012-08-29 |
| GB0714873D0 (en) | 2007-09-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20190731 |