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原文传递 Three Innovative Concepts for Short Span Steel Bridges.

题名：	Three Innovative Concepts for Short Span Steel Bridges.
作者：	yakel, a. farimani, m. mossahebi, n. azizinamini, a.
关键词：	steel bridges,short span,innovative concepts/quick construction, composite girder deck/
摘要：	Three innovative bridge concepts were proposed in response to a series of design challenges. Two of the concepts were aimed at quick construction with the elimination of costly elements such as intermediate stiffeners and cross frames, while the third concept attempted to improve the performance of a composite girder deck in the negative moment region. The designs were investigated using a combination of theory, finite element analysis and experimentation. The first design concept was the inversion of a conventional box girder and the second was a steel tube filled with reinforced concrete. The third concept was known as the self-stressing girder, which was similar to a conventional composite steel I-girder, only the girder was shimmed upward over the pier prior to deck hardening. After hardening, the shim was removed to induce compression in the deck slab. / NOTE: Research rept. / Supplementary Notes: Sponsored by Nebraska State Dept. of Roads, Lincoln. Bridge Div. / Availability Note: Available on CD-ROM and in color paper copy only. 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.
报告类型：	科技报告