Document Type

Article

Language

eng

Format of Original

9 p.

Publication Date

9-1-2002

Publisher

American Concrete Institute

Source Publication

ACI Structural Journal

Source ISSN

0889-3241

Original Item ID

doi: 10.14359/12297

Abstract

A top bar effect has been identified in prestressed concrete piles. The effect that this top bar effect has on the development of the prestressing strand is investigated. Strand transfer length is found to be proportional to the observed end slip. While the average transfer length of all strands in a section may satisfy the assumptions inherent in the ACI transfer length equation, due to the top bar effect, top-cast strand transfer lengths are considerably in excess of the ACI-calculated value. The flexural behavior of the pile, accounting for varying transfer lengths through its section, is investigated. Finally, recommendations for in-plant testing and acceptance criteria for prestressed strand bond quality are proposed.

Comments

Published version. ACI Structural Journal, Vol. 99, No. 5 (September 1, 2002): 577-585. DOI. © American Concrete Institute 2002. Used with permission.

Share

COinS