The rigid Texas concrete median barrier (CMB-70), with inclined surfaces, remained intact in restraining and redirecting a large 48,800 lb. tractor-trailer truck with load under the full-scale impact test conditions of 35 mph/19 deg; 34 mph/16 deg; and 45 mph/15 deg. The truck was remotely controlled from a chase pickup vehicle. The longitudinally reinforced CMB barrier had a height of 32 in. and weighed 507 plf. The barrier test section, with a length of 150 ft., was not anchored to the ground. A 1-in. layer of hot mix asphalt was placed at the base of the barrier to help resist lateral displacements. Subsequent to the tests, no rotational and lateral permanent set displacements of the barrier was visible. The relatively minor damage to the truck consisted of sheet metal damage to the front fender and running board of the tractor. Estimated repair cost would be less than 200 dollars. (Modified author abstract)
Truck Tests on Texas Concrete Median Barrier
1972
45 pages
Report
Keine Angabe
Englisch
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