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Title: Precasting of Segmental Bridges

Author(s): Thomas M. Gallaway

Publication: Journal Proceedings

Volume: 72

Issue: 10

Appears on pages(s): 566-572

Keywords: bridge decks;bridges (structures);cantilever bridges;concrete construction; formwork (construction);post-tensioning;precast concrete; prestressing; reinforced concrete;reinforcing steels;structural design.

DOI: 10.14359/11157

Date: 10/1/1975

This paper discusses planning criteria for design and construction personnel involved in precast segmental bridge construction that can lead to optimum equipment and procedures for precasting segmental bridges. Although common in Eurpoe, segmental bridges have only recently made their debut in the United States; suggestions are made as to the economc implication of this new concept in bridge construction. For maximum efficancy, standardization of techniques and materials is stressed, with reccomendations for industrializing the construction of segmental bridges. Match-casting of segments is shown to be the most reliable method for providing the required accurancies, it also results in significant secondary advantages. Major items affecting the cost and efficancy of forming and casting segments are discussed, these include formwork, stressing systems, reinforcing, and casting procedures.


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