Anti-ram crash-rated bollard
A ram-resistant bollard system for prevention of ingress of vehicles onto a sensitive area that will completely stop a 15000 lb. truck, travelling at 30 mph in less than 3.3 ft wherein the bollard system comprises an upright element inserted into a base-plate which is secured onto a foundation structure made from two H-beams each made from a one-piece extruded metal form, wherein the two H-beams are connected to each other via at least one lower connector plate, partially overlapping and connected to the flanges on the lower surface of both H-beams, and wherein the base-plate is positioned above the flanges of the upper surface of the two H-beams, so as to be to be partially overlapping and connected to the top side of both H-beams via a plurality of small rectangular connection plates that are orthogonally positioned between the base-plate and the flanges of the H-beams.
1. An individual, stand-alone bollard designed to decelerate and stop a vehicle impacting said bollard; comprising:
a single upright element ( 1 ), inserted into and passing through a base-plate ( 6 ) which is secured onto the top surface of a foundation structure, wherein the foundation structure comprises two H-beams ( 2 ) and ( 3 ), each made from a one-piece extruded metal form, oriented with respect to each other in a T-shape, wherein the two H-beams are placed such that, in situ, the web of each H-beam is in a vertical orientation, and wherein the two H-beams have an upper surface defined by flanges and a lower surface defined by flanges, wherein the two H-beams are connected to each other via at least one lower connector plate ( 5 ), which fits flush against the bottom of the foundation structure, partially overlapping and connected to the flanges of the lower surface of both H-beams, and wherein the base-plate ( 6 ) is positioned above the flanges of the upper surface of the two H-beams, so as to be to be partially overlapping and connected to the top side of both H-beams via a plurality of small rectangular connection plates ( 4 ) that are orthogonally positioned between the base-plate and the flanges of the H-beams.
2. The bollard of claim 1 wherein the base-plate has a hole disposed within said baseplate, sized and adapted to receive the upright element, and wherein the lower connector plate does not have a corresponding hole in it.
3. The bollard of claim 1 wherein the upright element has a round cross-sectional shape.
4. The bollard of claim 1 wherein the upright element passes through the base-plate such that said upright element penetrates into the foundation structure such that a portion of the upright element is sandwiched between the two H-beams.
5. The bollard of claim 1 wherein welds or bolts connect the H-beams to the base-plate and the lower connector plate.
6. The bollard of claim 1 further comprising a plurality of buttresses ( 7 ) welded between the upright element ( 1 ) and the base-plate ( 6 ).
7. The bollard of claim 1 further comprising a plurality of eye-holes ( 12 ) within the H-beams, adapted to receive rebar rods.
8. The bollard of claim 1 further comprising a plurality of integrated eye-bolts ( 11 ) adapted to facilitate attachment of cables for carrying and moving the bollard system during transport and installation.
9. The bollard of claim 1 wherein the baseplate is spaced 1 cm to 15 cm above the top of the H-beams and connected to the H-beams via a plurality of rectangular connection plates ( 4 ).
10. The bollard of claim 1 wherein the upright element ( 1 ) is internally reinforced.
11. The bollard of claim 1 wherein the upright element is internally reinforced by a crossbeam extending within the upright element.
12. The bollard of claim 1 wherein the upright element is internally reinforced by an H-beam or I-beam.
13. The bollard of claim 1 wherein the upright element is filled with concrete.
14. The bollard of claim 1 , wherein the H-beam is made from a one-piece extruded form.
15. The bollard of claim 1 wherein the upright element ( 1 ) is inserted into and passes through a base-plate ( 6 ) such that at least 30% of the upright element is present below the base-plate.
16. The bollard of claim 1 wherein the upright element is permanently fixed to the base-plate and to the lower connector plate by welds.