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Proceedings Paper

Alternative determination of cable forces using flexural theory of axially loaded member
Author(s): Chih-Peng Yu; Chia-Chi Cheng; Chih-Hung Chiang
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Paper Abstract

In this study, a back calculation formula using frequencies of two arbitrary modes of vibration is proposed to compute the tension force in pre-stressed members. Derivation of the proposed formula is based on the vibration theory of an axially loaded flexural member. This paper describes the use of the proposed formula to successfully recover the tension forces of lab-controlled pre-stressing strands. Data of field tests confirm that the proposed formula is also capable of predicting cable forces of a cable-stay bridge in good agreement with those obtained from traditional first frequency calculation and those by in-situ instrumentation with errors within acceptable range. As a result, it is concluded that such calculation can also be practically useful in giving reference values for other main effective methods regardless that reliable values of the first frequency of lateral vibration is available or not.

Paper Details

Date Published: 19 April 2011
PDF: 10 pages
Proc. SPIE 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011, 79832R (19 April 2011); doi: 10.1117/12.880346
Show Author Affiliations
Chih-Peng Yu, Chaoyang Univ. of Technology (Taiwan)
Chia-Chi Cheng, Chaoyang Univ. of Technology (Taiwan)
Chih-Hung Chiang, Chaoyang Univ. of Technology (Taiwan)


Published in SPIE Proceedings Vol. 7983:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011
H. Felix Wu, Editor(s)

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