Relationship of Cable Tension and Temperature Based on Long-Term Monitoring Data on the Cable-Stayed Bridge

Wang, Xiu Yong; Chen, Mao Sheng; Sun, Hong Xin; Qi, Yang

doi:10.4028/www.scientific.net/amm.405-408.1716

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…Long-term tension monitoring shows that the cable tension generally varies less than 10% of the design tension. 27 The tension of some short cables near the pylon varies up to 30% of the design tension. Thus, the magnetization law, obtained under the conditions of low tension or monotonous changing tension, is not suitable for monitoring the cable tension.…”

Section: Introductionmentioning

confidence: 99%

Influence of cable tension history on the monitoring of cable tension using magnetoelastic inductance method

Zhang

Zhou

Liao

et al. 2021

Structural Health Monitoring

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Cable tension monitoring is vital for the health monitoring of cable-stayed bridges. During the service of bridges, cable tension fluctuates rather than monotonously changes. However, existing research works pay little attention to the influence of tension history. In this article, the influence of the tension history on the monitoring of cable tension was studied. To guide the experiment, the magnetization theory of ferromagnetic materials and the electromagnetic induction principle were combined to analyze the theory of the magnetoelastic inductance method. The magnetoelastic inductance method characterized cable tension by sensor inductance. Based on the theoretical analysis, tension monitoring experiments were carried out to figure out the influences of design tension and tension variation. Experimental results showed the design tension and the tension variation influenced the relationship between the inductance and the tension. To monitor the fluctuating tension, a secant method was proposed. When the tension changed less than 30% of the design tension, the tension can be ascertained by the secant method. The experimental results demonstrated that the influence of the tension history should be considered when the design tension was different or the tension variation was large. Besides, the influence of the tension history analyzed in this article is suitable for other tension monitoring methods based on the magnetic properties of ferromagnetic materials.

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Section: Introductionmentioning

confidence: 99%