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原文传递 Development of a New Concept for Florida's Bridges, Volume 1; Research rept

题名：	Development of a New Concept for Florida's Bridges, Volume 1; Research rept
作者：	Sen, R.; Stroh, S.; Olbinska, J.; Hassiotis, S.; Mullins, G.
关键词：	Bridges(Structures); Florida; Bridge design; High strength concretes; Steel structures; Lightweight concretes; Technology innovation; Bridge decks; Highway bridges
摘要：	The report presents the findings from the first year of a three-year investigation to develop a new bridge superstructure concept for spans varying between 200-400 ft. A state-of-the-art survey was carried out to compile information on new materials, technologies and also to obtain examples of recently constructed innovative bridges. To identify deficiencies in existing Florida bridges, the maintenance records of several representative bridges (all in Districts 1 and 7) were reviewed. Cracking of the deck slab was found to be the most common problem. A careful evaluation was made of over twenty concepts proposed in the literature by several of the Tampa Bay region's most prominent long span bridge designers. Four concepts were short-listed and a double composite concept selected for detailed study. The first phase of the study has demonstrated the potential of the double composite concept. The aim of the second phase is to conduct additional design studies, laboratory tests and numerical analyses to further refine and develop the concept.
总页数：	192p
报告类型：	科技报告