Share Email Print
cover

Proceedings Paper

Dynamic monitoring of stay cables by enhanced cable equations
Author(s): Chih-Peng Yu; Keng-Tsang Hsu; Chih-Hung Chiang; Chia-Chi Cheng
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In a typical vibration test of tensioned cables, tension forces are mostly estimated from theory of a vibrating string with the first natural frequency. To obtain slightly better estimations, formulas based on an axially loaded beam can be employed. However, uncertainty on both flexural rigidity and effective length of the vibrating cable raise difficulty in reliably determining the possible range of the tension value. From the previous work of the authors, an alternative approach for the calculation of tension forces without the need of rigidity data had been proposed, in which frequencies of high modes are instead required in recovering accurate results. This paper extends the previous work to also consider the discrepancy between the design length and effective length so as to further improve the results. Feasibility of the proposed methodology with enhanced equations was verified by actual cable forces measured in an extradosed bridge. Current study aims to apply the proposed approach to the dynamic monitoring of the in-situ stay cables so as to improve the traditional assessment results without increasing the testing costs.

Paper Details

Date Published: 9 March 2014
PDF: 7 pages
Proc. SPIE 9063, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2014, 90630U (9 March 2014); doi: 10.1117/12.2044918
Show Author Affiliations
Chih-Peng Yu, Chaoyang Univ. of Technology (Taiwan)
Keng-Tsang Hsu, Chaoyang Univ. of Technology (Taiwan)
Chih-Hung Chiang, Chaoyang Univ. of Technology (Taiwan)
Chia-Chi Cheng, Chaoyang Univ. of Technology (Taiwan)


Published in SPIE Proceedings Vol. 9063:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2014
H. Felix Wu; Tzu-Yang Yu; Andrew L. Gyekenyesi; Peter J. Shull, Editor(s)

© SPIE. Terms of Use
Back to Top