Design Seismic Detailing of Nonstandard Deep Precast Concrete Box Girders For Long Span Railroad Bridges

摘要

Precast concrete construction is the preferred alternative for railroad bridges in coastal areas and river crossings. Often engineers face challenging demands by local agencies to improve the hydrology of a given river by employing fewer numbers of piers, resulting in design of longer than the standard precast concrete railroad bridges. This paper presents the challenging attributes of utilizing precast construction for a 95 feet long precast concrete box girder and offers several solutions.