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Seismic precast concrete bridgesubstructure systems

Precast solutions for bridge systems


This paper is the first of a two-part series summarizing precast concrete bridge substructure systems and details for seismic regions. The first paper is based on the 2004 FHWA/AASHTO International Scan on Prefabricated Bridges and the recently completed San Mateo-Hayward project recently completed by the California Department of Transportation (Caltrans). Emulative systems and details include a partially-precast segmental pier system, continuity details, and a partially-precast bent cap system. Even use of partial precast components in a precast bridge system allow for significant benefits over traditional cast-in-place construction, including reduced traffic disruption, environmental impact, and/or life cycle cost; improved work zone safety, constructability, and/or quality. The companion paper will introduce NCHRP Project 12-74, “Development of Precast Bent Cap Systems for Seismic Regions”, including emulative and jointed system concepts, research progress, and end products.

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CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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