Prestressing Optimization and Local Reinforcement Design for a Mixed Externally and Internally Prestressed Precast Segmental Bridge
Publication: Journal of Bridge Engineering
Volume 21, Issue 7
Abstract
The precast segmental construction is advantageous for rapid erection, high quality of concrete segments, and minimal disturbance to traffic. This paper compares two different tendon layouts of a segmental bridge erected by the span-by-span method. These comparisons include the stress analysis based on the 14-degrees of freedom (DOF) spatial beam model that considers warping, construction speed, and constructability. A simplified two-dimensional (2D) planar model for the reinforcement design of a rib deviator was proposed. The tensile stress region method (TSRM) was applied in the reinforcement design of the diaphragm in this type of bridge; thus the original reinforcement design was optimized, which can be useful in the design for structures of the same type.
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Published In
Journal of Bridge Engineering
Volume 21 • Issue 7 • July 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jan 14, 2015
Accepted: Dec 10, 2015
Published online: Feb 3, 2016
Published in print: Jul 1, 2016
Discussion open until: Jul 3, 2016
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