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原文传递 Rideability of a Deflected Bridge Approach Slab. Technical Summary Report 457.

题名：	Rideability of a Deflected Bridge Approach Slab. Technical Summary Report 457.
作者：	M. Martinez;
关键词：	concrete slabs,ride quality,pavement roughness index;ride quality improvement, bridge bump, joint fault, inertia;
摘要：	The Louisiana Department of Transportation and Development (LADOTD) initiated the Louisiana Quality Initiative (LQI) entitled Preservation of Bridge Approach Rideability to explore different potential methods of solving what has been observed as an approach-slab settlement problem at bridge ends. For LQI research to proceed, it was determined that a means of indexing bridge approach slab rideability and approach slab deformation would have to be developed. Traditional methods of roughness indexing like the International Roughness Index (IRI) and Ride Number (RN) along with alternative methods of indexing were examined in an effort to ascertain how localized (non-steady state) distresses, such as occur, at bridge transitions might best be indexed. / Supplementary Notes: See also PB2010-108349. Sponsored by Federal Highway Administration, Baton Rouge, LA. Louisiana Div. / Availability Note: Product reproduced from digital image. 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. / NTIS Prices: PC A01/MF A01 / NTIS In-house Control Codes: dotfha;12111,1101
报告类型：	科技报告