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Structural Engineering and Mechanics Volume 50, Number 1, April10 2014 , pages 037-052 DOI: https://doi.org/10.12989/sem.2014.50.1.037 |
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Determination of cable force based on the corrected numerical solution of cable vibration frequency equations |
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Danhui Dan, Yanyang Chen and Xingfei Yan
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| Abstract | ||
| The accurate determination of cable tension is important to the monitoring of the condition of a cable-stayed bridge. When applying a vibration-based formula to identify the tension of a real cable under sag, stiffness and boundary conditions, the resulting error must not be overlooked. In this work, by resolving the implicit frequency function of a real cable under the above conditions numerically, indirect methods of determining the cable force and a method to calculate the corresponding cable mode frequency are investigated. The error in the tension is studied by numerical simulation, and an empirical error correction formula is presented by fitting the relationship between the cable force error and cable parameters | ||
| Key Words | ||
| cable; cable force; implicit frequency function; numerical solution | ||
| Address | ||
| Danhui Dan, Yanyang Chen : Department of Bridge engineering, Tongji University, Shanghai, PRC, 200092, China Xingfei Yan : Shanghai Urban Construction Design and Research Institute, Shanghai, PRC, 200125, China | ||