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原文传递 Field Testing and Load Rating Report, Bridge S-1090.

题名：	Field Testing and Load Rating Report, Bridge S-1090.
作者：	commander, b. grimson, j. varela-ortiz, w. stanton, t. r. lugo, c. y.
关键词：	finite element analysis, loads(forces), south korea, comparison, ratings, tanks(combat vehicles), load distribution, measurement
摘要：	In June 2007, Bridge Diagnostics, Inc. (BDI), was contracted by the U.S. Army Corps of Engineers to perform live-load testing and load rating on Bridge S-1090 at Camp Casey, South Korea, in conjunction with two other structures, S-4360 and S-1801. The general goal of the live-load testing was to obtain and then utilize field measurements to verify an analytical model from which accurate load ratings could be obtained. A more specific purpose of the load test was to determine if the use of the Heavy Equipment Transporter System (HETS) to transport an M1A1 tank across the bridge was more or less severe than the M1A1 tank crossing on its own. Controlled load tests were performed with a three-axle dump truck, an empty HETS, an M1A1 tank, and a HETS carrying an M1A1 tank. The load test data were examined to obtain a direct comparison of load responses from the different load configurations. The conclusion obtained directly from the load test data was that the HETS/M1A1 load combination produced lower stresses than the M1A1 tank by itself. Subsequent modeling and analysis of the bridge further verified that the HETS was the best option for transporting the M1A1 across the bridge. Load ratings were performed for the standard American Association of State Highway and Transportation Officials (AASHTO) vehicles and several military load configurations in accordance with AASHTO Load and Resistance Factor Design Bridge Design Specifications 2004 and Manual for Condition Evaluation and Load and Resistance Factor Rating of Highway Bridges 2003. It was found that the structure can safely carry all of the AASHTO vehicles and military load configurations considered in this report. / NOTE: Final rept. / Supplementary Notes: The original document contains color images. / 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.
总页数：	u0820；103p
报告类型：	科技报告