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http://dx.doi.org/10.12652/Ksce.2011.31.3A.261

Longitudinal Vibration Mechanism of Grouted PSC Tendon  

Kim, Byeong Hwa (경남대학교 토목공학과)
Jang, Jung Bum (한국전력공사 전력연구원)
Lee, Hong Pyo (한국전력공사 전력연구원)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.31, no.3A, 2011 , pp. 261-267 More about this Journal
Abstract
This study reveals the longitudinal vibration mechanism of tendon embedded in a prestressed concrete. The extensional and torsional displacements of the strand are coupled, and the applied prestress level of tendon affects not only axial rigidity but also torsional rigidity. Measuring the elastic wave velocity of tendon, the applied prestress level of tendon could be evaluated. This is because the elastic wave velocity is a function of extensional and torsional rigidity. Using the experimental results for the six prsteressed concrete beams with different prestress levels, the longitudinal vibration mechanism and the effect of prestress level have been examined. To estimate the system ridigities of tendon, a system identification algorithm has been newly developed. The estimated system rigidities have been compared with the available results of related previous study.
Keywords
tendon; tension; axial vibration; prestressed concrete; elastic wave velocity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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