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原文传递 Crash Testing and Evaluation of F-Shape Barriers on Slopes.

题名：	Crash Testing and Evaluation of F-Shape Barriers on Slopes.
作者：	sheikh, n. m. bligh, r. p. menges, w. l.
关键词：	median barriers,portland concrete barriers,f-shape barriers,roadside slopes,impact tests/roadside safety, finite element analysis, simulation, texas, precast concrete/
摘要：	The TxDOT Roadway Design Manual currently suggests that concrete barrier not be placed on slopes steeper than 10H:1V. This suggestion has limited the placement of concrete barriers to narrow, flat, paved medians or at the edge of the shoulder. Based on the results of full-scale crash testing, researchers determined that TxDOTs cast-in-place permanent F-shape barrier and the precast free-standing X-bolt F-shape barrier are suitable for placement on roadside and median foreslopes of 6H:1V or less. Additionally, these barriers are suitable to be placed at any lateral offset from the roadway edge, and for any width of depressed V-ditch median as long as the barrier is placed at its center. Further, similar or better performance would be expected for barrier placement on more gentle (e.g., 8H:1V) slopes. Increasing the maximum slope on which median barriers can be placed will allow many installations to be placed further from the travelway, which in turn will most likely lead to a reduction in barrier impact frequency and severity. / NOTE: Technical rept. (Sept. 2004-Aug. 2007). / Supplementary Notes: See also PB2006-112221 and PB2007-103053. Sponsored by Texas Dept. of Transportation, Austin. Research and Technology Implementation Office. and Federal Highway Administration, Austin, TX. Texas 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.
报告类型：	科技报告