Strand Debonding for Pretensioned Girders

2017 ◽  
Author(s):  
Bahram M. Shahrooz ◽  
Richard A. Miller ◽  
Kent A. Harries ◽  
Qiang Yu ◽  
Henry G. Russell ◽  
...  
Keyword(s):  
Strand Debonding

scholarly journals A Numerical Study on the Control of Horizontal Cracking at the Ends of BS22 Hollow-type PC-girders Utilizing Midas FEA

2021 ◽  
Vol 1996 (1) ◽  
pp. 012011
Author(s):  
Abdul Khaliq Karimi ◽  
Bashir Ahmad Aasim ◽  
Jun Tomiyama
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Concentration ◽  
Numerical Study ◽  
Crack Size ◽  
Analysis Software ◽  
Principal Stresses ◽  
Element Analysis ◽  
Crack Penetration ◽  
Strand Debonding

Abstract When the prestressing forces transfer from PC-strands to concrete, a region of stress concentration develops at the ends of pretensioned girders, which often results in horizontal cracking during or just after the detensioning process. In this study, a hollow PC-girder was modeled utilizing a Finite Element Analysis software Midas FEA to identify the horizontal cracking locations in terms of the principal stresses at the end-zone of the hollow PC-girder. Strand-debonding and placing end-zone reinforcements were hired in this work by introducing four cases. The only strand-debonding method could not prevent horizontal end crack penetration. Though the end-zone reinforcements were placed alongside the strand-debonding, this combination could reduce principal stresses to a level that could bring the crack size to a negligible range.

Closure to “Evaluation of Pretensioned Girders with Partial-Strand Debonding” by Mathew W. Bolduc, Avdhesh Gaur, Bahram M. Shahrooz, Kent A. Harries, Richard A. Miller, and Henry G. Russell

2021 ◽  
Vol 26 (11) ◽  
pp. 07021002
Author(s):  
Mathew W. Bolduc ◽  
Avdhesh Gaur ◽  
Bahram M. Shahrooz ◽  
Kent A. Harries ◽  
Richard A. Miller ◽  
...  
Keyword(s):  
Strand Debonding

Evaluation of the AASHTO LRFD strand debonding limitations in the context of bond-loss failure

2017 ◽  
Vol 2 (1) ◽  
pp. 22-28 ◽  
Author(s):  
Behnam Naji ◽  
Brandon E. Ross
Keyword(s):  
Aashto Lrfd ◽  
Strand Debonding

Evaluation of Pretensioned Girders with Partial-Strand Debonding

2020 ◽  
Vol 25 (8) ◽  
pp. 04020059
Author(s):  
Mathew W. Bolduc ◽  
Avdhesh Gaur ◽  
Bahram M. Shahrooz ◽  
Kent A. Harries ◽  
Richard A. Miller ◽  
...  
Keyword(s):  
Strand Debonding
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