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原文传递 Countermeasures to Protect Bridge Piers from Scour.

题名：	Countermeasures to Protect Bridge Piers from Scour.
作者：	lagasse, p. f. clopper, p. e. zevenbergen, l. w. girard, l. g.
关键词：	geotextiles, soil properties, riprap, geology, gabion mattresses, streambed erosion
摘要：	This report documents research on local scour at bridge piers resulting in the development and recommendation of a practical selection criteria for bridge-pier scour countermeasures, guidelines and specifications for design and construction of those countermeasures, and guidelines for their inspection, maintenance, and performance evaluation. Because of their critical role in ensuring bridge integrity and potentially high cost of these countermeasures, it is important that the most appropriate countermeasures be selected, designed, and constructed. The contents of this report are, therefore, of immediate interest to highway professionals responsible for planning, administrating, evaluating, designing, constructing, inspecting and maintaining bridges and other structures founded in erosive areas. The report is also of interest to those charged with specifying materials testing procedures and acceptable results, setting budget goals, and making policy. / Supplementary Notes: Sponsored by Transportation Research Board, Washington, DC. National Cooperative Highway Research Program., American Association of State Highway and Transportation Officials, Washington, DC. and Federal Highway Administration, Washington, DC. / 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 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0814；284p
报告类型：	科技报告