About the author  ⁄ Dustin Black

Dustin Black is a Design and Operations Engineer at the Michigan Department of Transportation.

Prestressed Concrete Bridge Girders

Part 2

This is the second of two articles discussing high-level design considerations of prestressed concrete girders. Part 1 (STRUCTURE, January 2021) provided an overview of the post-tensioning and pretensioning processes, described the common materials used in constructing prestressed bridge girders and discussed the time-dependent prestress losses inherent in their design. The discussion continues in Part 2 with fundamental design considerations for internal stress distributions within prestressed concrete girders and the methodology for application.

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Apr, 2021 By In Structural Rehabilitation Comments 0

Prestressed Concrete Bridge Girders

Part 1

The ability to premanufacture elements helped to proliferate concrete as an essential building material. Rectangular blocks, for example, could be manufactured rapidly and easily transported to make many types of structures, from steps, sheds, and buildings to intricate tunnels, aqueduct systems, and bridges. These emerging technologies and the infrastructure they enabled have continually reshaped the way communities are organized through more efficient transportation of people and goods. The next step in the evolution of precasting concrete is prestressed concrete. This article discusses some of the technologies and materials that make modern prestressing techniques achievable. …

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Jan, 2021 By In Structural Rehabilitation Comments 0
STRUCTURE magazine