关键词: |
protable concrete barriers,traffic control,highway construction,north carolina department of transportation(ncdot),portable concrete barriers(pcb)/construction activities, hazardous activities, north carolina department of transportation, design manual/ |
摘要: |
The highway construction is among the most hazardous construction activities, with 39 deaths per 100,000 U.S. workers, as compared to only 6 deaths per 100,000 U.S. workers in all other industries (U.S. Bureau of Labor Statistics). Of this number, the highest fatality rate, which is approximately 23%, is due to workers being struck by vehicles intruding the work zones. In order to reduce this hazard portable concrete barriers are used to control the traffic and protect the work zones. In accordance with the standards developed by National Cooperative Highway Research Program (NCHRP), the NCDOT has been in the process of developing its own traffic control design manual since the applicability of the existing method of evaluating the displacements of the barriers (NCDOT plans to use Ftype and the Oregon Tall F-type), is questionable. This investigation was undertaken to develop design aids for portable concrete barriers (PCB) to be included in the new NCDOT traffic control design manual. In this study the problem of vehicular impact on barriers are thoroughly investigated. / NOTE: Final rept. (July 2004 - Dec. 2005). / Supplementary Notes: Sponsored by North Carolina Dept. of Transportation, Raleigh. and Federal Highway Administration, Raleigh, NC. North Carolina Div. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |