The International Information Center for Structural Engineers

Evaluation of common design policies for precast, prestressed concrete I-girder bridges

Authors
R. Brice,S. Seguirant,B. Khaleghi.
Year
2013
Book Title or Journal
PCI Journal, Fall 2013
Number of pages
pages 68-94
Description
Many bridge owners have adopted policies more stringent than the AASHTO LRFD Bridge Design Specifications for the design of precast, prestressed concrete I-girder bridges. ■ These policies include some combination of design with gross or transformed section properties, reduced allowable tensile stress, and simple-span moments for superimposed dead and live loads. ■ The most common disadvantages of more stringent policies include reduction in span capability, reduced girder spacing or additional lines of girders, or an increase in prestress.

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