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原文传递 Stability of Curved Bridges During Construction.

题名：	Stability of Curved Bridges During Construction.
作者：	ABDALLA, R. S.; DAVIDSON, J. S.; MADHAVAN, M.
关键词：	*Bridges-.;Design-; Construction-; Box-girder; Specifications-; Box-girders; Stability-.
摘要：	Because of the increasing demand for curved bridges combined with challenges of design and construction, there is need to improve practices for the efficient design and construction of curved bridges. This report presents the results of two projects aimed at establishing a curved steel bridge research program within The University of Alabama system: UTCA Projects 01223, 'Design and Construction of Modern Curved Bridges,'and UTCA Projects 03228, 'Stability of Curved Bridges during Construction.' The overall objectives of these projects were to improve design and construction practices, improve economic efficiency, and increase safety by investigating stability issues associated with the construction of horizontally curved bridges. Activities of the project included (1) synthesizing curved bridge stability research and state-of-the- art practice, (2) identifying construction stability research needs through contact with ALDOT, prominent researchers, and industry, and (3) conducting fundamental stability research that will improve curved bridge design and construction methodology. The stability of both I- and box-shaped curved girders was considered. The planning, design, fabrication, and construction of a local curved I-girder bridge flyover was studied to gain a better understanding of practical challenges associated with curved bridge design and construction. Students conducted analytical investigations involving advanced theoretical approaches to solving governing stability equations as well as the use of advanced finite element methods. Several papers and presentations resulted. The project enabled the investigators to participate in national level conferences and meetings. The report provides an in-depth synthesis of literature and current practice related to the design and construction of curved I-girder and box girder bridges and an outline of needs for future research. The research literature collected will facilitate continued research efforts. Additional technical results of the effort have been and we continue to be disseminated through conference presentations and proceedings, journal publications, and student theses and dissertations.
报告类型：	科技报告