19 April 2011 Condition monitoring and life-cycle cost design of stay cable by embedded OFBG sensors
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Abstract
Stay cables are one of the most critical structural components of a cable-stayed bridge. However, stay cables readily suffer from fatigue damage, corrosion damage and their coupled effect. Thus, condition monitoring of stay cables is important to ensure the integrity and safety of a bridge. Glass Fibre Reinforced Polymer Optical Fibre Bragg Grating (GFRP-OFBG) cable, a kind of fibre Bragg grating optical sensing technology-based smart stay cables is used in this study. The application of the smart stay cables on the Tianjin Yonghe Bridge was demonstrated and the vehicle live load effect and fatigue effect of smart stay cables were evaluated based on field monitoring data. Furthermore, the life-cycle cost analysis method of the stay cables is established. Finally, based on the nonlinear reliability index deterioration model, the optimal design of stay cable with different reference period is evaluated.
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C. M. Lan, C. M. Lan, Y. Ju, Y. Ju, H. Li, H. Li, } "Condition monitoring and life-cycle cost design of stay cable by embedded OFBG sensors", Proc. SPIE 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011, 79831B (19 April 2011); doi: 10.1117/12.880352; https://doi.org/10.1117/12.880352
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