Brace and beam anti-ram passive vehicle barrier
A brace and beam vehicle barrier in accordance to at least one embodiment includes a plurality of interconnected beam sections, forming a beam positioned above ground level and secured to the ground via a plurality of spaced apart braces connected to the beam on a protected side of the beam, the brace and the ground forming two sides of a triangle to provide a stopping force to a motor vehicle impacting the beam from an attack side.
1. An anti-ram vehicle barrier, comprising:
a longitudinally extending beam positioned vertically above a ground level and separating a protected side from an attack side, the beam comprising beam sections pivotally interconnected at joints; and
a brace positioned on the protected side of the beam and having a first end pivotally connected to the beam at one of the joints and a second end positioned in a concrete foundation such that the brace and the concrete foundation form two adjacent sides of a vertex having an acute angle, wherein the anti-ram vehicle barrier is configured to achieve an ASTM F2656 designation capable of stopping a 15,000 pound vehicle impacting the beam when traveling in a direction from the attack side toward the protected side within a determined distance.
2. The barrier of claim 1 , further comprising a second brace having a first end connected to the beam at an intermediate position between the joints and a second end positioned in a concrete foundation such that the second brace and the concrete foundation form two adjacent sides of a vertex having an acute angle.
3. The barrier of claim 1 , further comprising a vertical line post having a bottom end positioned in the concrete foundation and the line post connected to the beam and the brace, such that the brace, the concrete foundation and the vertical line post form a triangle.
4. The barrier of claim 1 , wherein the concrete foundation is a shallow concrete foundation formed at ground level and extending a depth of about 18 inches or less below ground level.
5. The barrier of claim 1 , wherein the beam extends between opposing truss sections.
6. The barrier of claim 3 , wherein the concrete foundation is formed at ground level and extending a depth of about 12 inches or less below ground level.
7. The barrier of claim 3 , wherein the vehicle barrier is configured to achieve an ASTM F2656 M50-P 1 designation.
8. The barrier of claim 3 , wherein the line post is connected to the beam and the brace at the pivotal connection by a single vertical pivot pin.
9. The barrier of claim 8 , wherein line post is located on the protected side of the beam.
10. The barrier of claim 8 , wherein line post and the beam are aligned in a same vertical plane.
11. The barrier of claim 8 , wherein line post is located on the attack side of the beam.
12. The barrier of claim 11 , wherein the concrete foundation is formed at ground level and extending a depth of about 12 inches or less below ground level.
13. The barrier of claim 12 , wherein the vehicle barrier is configured to achieve an ASTM F2656 M50-P 1 designation.
14. A method comprising:
installing a vehicle barrier comprising a longitudinally extending beam positioned above a ground level and separating a protected side from an attack side, the beam comprising beam sections pivotally interconnected at joints, and a line brace positioned on the protected side of the beam and having a first end pivotally connected to the beam at one of the joints and a second end secured in a concrete foundation such that the line brace and the concrete foundation form two adjacent sides of a vertex having an acute angle, wherein the vehicle barrier is configured to achieve an ASTM F2656 designation capable of stopping a 15,000 pound vehicle impacting the beam when traveling in a direction from the attack side toward the protected side within a determined distance.
15. The method of claim 14 , further comprising crash testing the installed vehicle barrier by ramming a vehicle traveling in a direction from the attack side toward the protected side into the beam.
16. The method of claim 14 , wherein the beam sections and the line brace are pivotally connected together by a single vertical pivot pin at the one of the joints.
17. The method of claim 14 , further comprising a line post having a bottom end positioned in the concrete foundation and the line post connected to the beam and the line brace at the pivotal connection of the line brace to the beam.
18. The method of claim 14 , further comprising a line post having a bottom end positioned in the concrete foundation and the line post connected to the beam and the line brace at the pivotal connection of the line brace to the beam, wherein the line post is located on the attack side of the beam.
19. The method of claim 14 , further comprising a line post having a bottom end positioned in the concrete foundation and the line post connected to the beam and the line brace at the pivotal connection of the line brace to the beam;
an intermediate brace having a first end non-pivotally connected to the beam at an intermediate location between joints and a second end secured in a concrete foundation such that the intermediate brace and the concrete foundation form two adjacent sides of a vertex having an acute angle; and
an intermediate post connected to the beam and the intermediate brace.
20. The method of claim 19 , wherein the concrete foundation is a shallow concrete foundation extending at a depth of 18 inches or less below the ground level.
21. The method of claim 14 , further comprising a line post having a bottom end positioned in the concrete foundation and the line post connected to the beam and the line brace at the pivotal connection of the line brace to the beam, wherein the beam sections and the line brace are pivotally connected together by a single vertical pivot pin at the one of the joints;
an intermediate brace having a first end non-pivotally connected to the beam at an intermediate location between joints and a second end secured in a concrete foundation such that the intermediate brace and the concrete foundation form two adjacent sides of a vertex having an acute angle; and
an intermediate post connected to the beam and the intermediate brace.
22. The method of claim 21 , wherein the line post and the intermediate post are located on the attack side.
23. The method of claim 14 , further comprising installing a line post having a bottom end positioned in the concrete foundation and the line post connected to the beam and the line brace at the pivotal connection of the line brace to the beam, wherein the beam sections and the line brace are pivotally connected together by a single vertical pivot pin at the one of the joints, wherein the concrete foundation is a shallow concrete foundation extending at a depth of 18 inches or less below the ground level.
24. The method of claim 23 , wherein the line post and the beam are aligned in a same vertical plane.
25. A vehicle barrier, comprising:
a longitudinally extending beam positioned vertically above a ground level and separating a protected side from an attack side, the beam comprising beam sections pivotally interconnected at joints;
a line brace positioned on the protected side, the line brace having a first end pivotally connected to the beam at one of the joints and a second end secured in a concrete foundation;
a line post having a bottom end positioned in the concrete foundation and the line post connected to the beam and the line brace at the pivotal connection of the line brace to the beam;
an intermediate brace positioned on the protected side, the intermediate brace having a first end connected to the beam at an intermediate location between the joints and a second end secured in a concrete foundation such that the intermediate brace and the concrete foundation form two adjacent sides of a vertex having an acute angle; and
an intermediate post having a bottom end connected to the beam and the intermediate brace:
wherein the vehicle barrier is configured to achieve an ASTM F2656 designation capable of stopping a 15,000 pound vehicle impacting the beam when traveling in a direction from the attack side toward the protected side within a determined distance.
26. The vehicle barrier of claim 25 , wherein the line post and the intermediate post are located on the attack side.
27. The vehicle barrier of claim 25 , wherein the beam sections and the line brace are pivotally connected together by a single vertical pivot pin at the one of the joints.
28. The vehicle barrier of claim 25 , wherein the line post and the intermediate post are located on the attack side; and
the beam sections and the line brace are pivotally connected together by a single vertical pivot pin at the one of the joints.
29. The vehicle barrier of claim 25 , wherein the vehicle barrier is configured to achieve an ASTM F2656 M50-P 1 designation.
30. The vehicle barrier of claim 25 , wherein the vehicle barrier is configured to achieve an ASTM F2656 M40-P 2 designation.