Presentation Title

Accelerated Bridge Construction (ABC) for Georgia City and County Roads, Part II: Design Concept and Examples Using MathCAD

Location

Atrium

Session Format

Poster Presentation

Research Area Topic:

Engineering and Material Sciences - Civil

Co-Presenters, Co- Authors, Co-Researchers, Mentors, or Faculty Advisors

Student Authors: Cody Rogers, John Weyant, Chuck Byrne, Mike Ofili

Faculty Mentors: Drs. Junsuk Kang, Mike Jackson, Gus Maldonado, Peter Rogers, Marcel Maghiar

Abstract

Accelerated bridge construction is a technique used to shorten traffic disruptions during construction, and minimize on-site construction especially in areas with less favorable weather. Elements used in ABC designs differ from conventional cast-in-place components because they are prefabricated as complete units, and then lifted into place once onsite. Steel or concrete girders can be used, and leave the factory with a concrete deck panel already attached. The Georgia Department of Transportation (GDOT) is funding this research project to develop an effective toolkit in order to introduce ABC design and construction to Georgia cities and counties. Officials are not aiming to make ABC the primary design criteria for Georgia, but simply to start using the technology when and where it is needed most. An example of this more critical scenario would be a highly travelled interstate bridge that needs to be replaced quickly in order to reduce traffic disruptions and costs incurred with a detour bridge. Our particular objective in this project is creating a user friendly example design document and interactive design flowcharts. Both steel and concrete girder design examples were developed, and modified to allow for easy understanding.

The base design examples were taken from the SHRP 2 document “Innovative Bridge Designs for Rapid Renewal” (SHRP2 2013). Modifications were made to the original design document by using GDOT standard criteria for highway bridges, information obtained from a design example created by the Federal Highway Association, and the latest AASHTO LRFD Bridge Design Specifications, 6th Ed. (2012). All design examples in this project were created using MathCAD, which allows readers such as Georgia city or county engineers to easily follow the extensive procedures involved in ABC bridge design. Simplicity is stressed throughout our examples, and even in the standard drawings in this project. Both superstructure and substructure elements are designed within this project, and standard drawings are present to provide a visual reference.

Keywords

Accelerated bridge construction, Design, Steel girder, Concrete girder

Presentation Type and Release Option

Presentation (Open Access)

Start Date

4-24-2015 10:45 AM

End Date

4-24-2015 12:00 PM

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Apr 24th, 10:45 AM Apr 24th, 12:00 PM

Accelerated Bridge Construction (ABC) for Georgia City and County Roads, Part II: Design Concept and Examples Using MathCAD

Atrium

Accelerated bridge construction is a technique used to shorten traffic disruptions during construction, and minimize on-site construction especially in areas with less favorable weather. Elements used in ABC designs differ from conventional cast-in-place components because they are prefabricated as complete units, and then lifted into place once onsite. Steel or concrete girders can be used, and leave the factory with a concrete deck panel already attached. The Georgia Department of Transportation (GDOT) is funding this research project to develop an effective toolkit in order to introduce ABC design and construction to Georgia cities and counties. Officials are not aiming to make ABC the primary design criteria for Georgia, but simply to start using the technology when and where it is needed most. An example of this more critical scenario would be a highly travelled interstate bridge that needs to be replaced quickly in order to reduce traffic disruptions and costs incurred with a detour bridge. Our particular objective in this project is creating a user friendly example design document and interactive design flowcharts. Both steel and concrete girder design examples were developed, and modified to allow for easy understanding.

The base design examples were taken from the SHRP 2 document “Innovative Bridge Designs for Rapid Renewal” (SHRP2 2013). Modifications were made to the original design document by using GDOT standard criteria for highway bridges, information obtained from a design example created by the Federal Highway Association, and the latest AASHTO LRFD Bridge Design Specifications, 6th Ed. (2012). All design examples in this project were created using MathCAD, which allows readers such as Georgia city or county engineers to easily follow the extensive procedures involved in ABC bridge design. Simplicity is stressed throughout our examples, and even in the standard drawings in this project. Both superstructure and substructure elements are designed within this project, and standard drawings are present to provide a visual reference.