详情

原文传递 Update of Experiments at the Revenue Service Mega Sites. Research Results.

题名：	Update of Experiments at the Revenue Service Mega Sites. Research Results.
关键词：	railroad tracks,axle loads,train operation safety,mega sites,heavy axle loads (hal),revenue service testing;track structures, experiments;premium rails, rail life extensions, wide-gap wells, insulated joints, rail anchors, plastic ties, elastic fasteners,
摘要：	Revenue service testing by Transportation Technology Center, Inc. at the eastern and western mega sites continues to determine the effects of heavy axle loads (HAL) on track infrastructure and to monitor performance of new technologies and designs intended to improve train operation safety and to mitigate detrimental effects of HAL on the track structure. The Federal Railroad Administration and the Association of American Railroads co-sponsor this research. These two mega test sites were established in 2004 and every year a number of experiments are conducted to address various HAL operation issues. Some experiments are long term, taking a few years to complete and may be conducted in phases. This paper is a summary of findings from experiments conducted in 2008 and the first quarter of 2009. These include experiments on premium rails, wide-gap welds (WGW), insulated joints (IJ), rail anchors on concrete ties, plastic ties, elastic fasteners, and bridge approach remedies. / 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 5301 Shawnee Road, Alexandria, VA, 22312, USA.
报告类型：	科技报告