Vibration-based methods for cable tension estimation of cable-supported structures

Suzhen Li 1 LAPUERTA Enrique Cavero 1,2

Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (23) : 148-152.

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (23) : 148-152.

Vibration-based methods for cable tension estimation of cable-supported structures

  • Suzhen Li 1    LAPUERTA Enrique Cavero  1,2
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Abstract

Estimation of the actual cable tension of cable-supported structures is significant for the examination and assessment of these sensitive elements as well as for the reliability evaluation of the whole structure. Aiming to cable tension estimation of cable-supported structures, this paper carry out a comparative study upon five vibration-based analytical methods-three practical formulas and two newly-developed methods in order to get a contrasted view of their advantages and disadvantages. The effects of the boundary conditions, the bending stiffness and the slenderness on the estimation accuracy of the cable tension are investigated, based on which the ranges of applicability and effectiveness of the five methods are determined. It has been verified that the traditional methods are only accurate for the fixed or hinged members vibrating on their local mode shapes while the new methods, derived from Euler and Timoshenko beams, are effective for most of the cases especially when the boundary conditions of the cable are unknown. Moreover, the Timoshenko beam method is more stable and more accurate than the Euler beam method when the slenderness ratio is less than 20.

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Suzhen Li 1 LAPUERTA Enrique Cavero 1,2 . Vibration-based methods for cable tension estimation of cable-supported structures[J]. Journal of Vibration and Shock, 2016, 35(23): 148-152

References

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