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Influence Of Strand Debonding On The Shear Strength Of Prestressed Concrete, Michael David Wesson

Open Access Dissertations

Strand debonding is a common method used to reduce flexural stresses caused by prestress transfer in the end regions of pretensioned concrete beams. Debonding is especially useful when section geometries prohibit draping such as U-beams. Based on concerns regarding shear strength, the AASHTO bridge design specification currently limits the percentage of strands that can be debonded. These limits have been found in practice to limit both the efficiency and economy of bridge girders. For this reason, a number of states chose to ignore these limits. The objective of this research is to improve the understanding of the influence of debonding …