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原文传递 Load and Resistance Factor Design (LRFD) for Highway Bridge Substructures: Reference Manual and Participant Workbook.

题名：	Load and Resistance Factor Design (LRFD) for Highway Bridge Substructures: Reference Manual and Participant Workbook.
关键词：	construction materials, stresses, structural analysis, manuals, training, workbooks
摘要：	Highway substructures (i.e., foundations and abutments) have traditionally been designed using Allowable Stress Design (ASD) methods whereas superstructure components have been designed used Load Factor Design (LFD) methods. This application of ASD for substructure design and LFD for superstructure design leads to uncertain and incompatible safety margins in the design of structure components. Solution of this problem requires a coherent method of design for the structure system. Load and Resistance Factor Design (LRFD) represents an approach in which applicable failure and serviceability conditions can be evaluated considering the uncertainties associated with loads and material resistances. Due to the differences between the substructure design process by ASD and LRFD, FHWA sponsored development of this training course to present the fundamentals of LRFD to bridge design engineers, geotechnical engineers, engineering geologists and others who are responsible for design of bridge substructures using the AASHTO LRFD Specification. This manual focuses on the geotechnical aspects of substructure design. It also is the reference manual and participant workbook for use with NHI (National Highway Institute) Course No. 132068. / NOTE: Reference manual. / Supplementary Notes: See also PB97-780035. / Availability Note: Also available on CD-ROM. 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：	u0811；596p
报告类型：	科技报告