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原文传递 Fifty Years of Interstate Structures: Past, Present, and Future. Transportation Research Circular E-C104.

题名：	Fifty Years of Interstate Structures: Past, Present, and Future. Transportation Research Circular E-C104.
关键词：	transportation,public works project,interstate highway system;legislation, specifications development, research, interstate structures;
摘要：	The 50th Anniversary of the Interstate Highway System marks a milestone for one of the largest public works projects ever undertaken in the United Statesand perhaps in the world. This Circular documents some of the key legislation, specifications development, and advances in research, design, and construction for bridges and other highway structures since the signing of the Federal Highway Act of 1956. The eight papers in this Circular were sponsored by the Structures Section (AFF00) committees: General Structures (AFF10); Steel Bridges (AFF20); Concrete Bridges (AFF30); Dynamics and Field Testing of Bridges (AFF40); Seismic Design of Bridges (AFF50); Tunnels and Underground Structures (AFF60); Culverts and Hydraulic Structures (AFF70); and Structural Fiber-Reinforced Polymers (AFF80). Advancements have been made possible through research, empirical knowledge gained during construction, and hindsight gleaned from failures. The papers also look forward to the future, commenting on the challenges ahead, including possible solutions to accommodate the nations ever increasing vehicle loads and numbers. There are numerous possible techniques, methods, and materials on the horizon that may help to manage these challenges. The eight papers were presented at the 85th Annual Meeting of the Transportation Research Board (TRB) during January 2006 in Washington. D.C. They were presented in two successive podium sessions titled 50 Years of Interstate Structures: Successes and Future Developments (Parts 1 and 2). Immediately following the podium sessions, a brief poster session was held; audience members and other interested persons were able to interact with the authors. / 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. / NTIS Prices: PC A09 / NTIS In-house Control Codes: nastrb;12091,1101
报告类型：	科技报告