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Mohseni Moghaddam, Mahtab, Dehghani, Ehsan, Bitaraf, Maryam. (1403). Enhancing Cable-Stayed Bridge Structural Health Assessment Using Phase Space Trajectory and Load Pattern Variability. , (), -. doi: 10.22059/ceij.2024.372319.2011
Mahtab Mohseni Moghaddam; Ehsan Dehghani; Maryam Bitaraf. "Enhancing Cable-Stayed Bridge Structural Health Assessment Using Phase Space Trajectory and Load Pattern Variability". , , , 1403, -. doi: 10.22059/ceij.2024.372319.2011
Mohseni Moghaddam, Mahtab, Dehghani, Ehsan, Bitaraf, Maryam. (1403). 'Enhancing Cable-Stayed Bridge Structural Health Assessment Using Phase Space Trajectory and Load Pattern Variability', , (), pp. -. doi: 10.22059/ceij.2024.372319.2011
Mohseni Moghaddam, Mahtab, Dehghani, Ehsan, Bitaraf, Maryam. Enhancing Cable-Stayed Bridge Structural Health Assessment Using Phase Space Trajectory and Load Pattern Variability. , 1403; (): -. doi: 10.22059/ceij.2024.372319.2011

Enhancing Cable-Stayed Bridge Structural Health Assessment Using Phase Space Trajectory and Load Pattern Variability

Civil Engineering Infrastructures Journal
مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 20 تیر 1403    اصل مقاله (2.09 M)
شناسه دیجیتال (DOI): 10.22059/ceij.2024.372319.2011
نویسندگان
Mahtab Mohseni Moghaddam1؛ Ehsan Dehghani1؛ Maryam Bitaraf* 2
1Department of Civil Engineering, Faculty of Engineering, University of Qom, Qom, Iran
2School of Civil Engineering, University of Tehran
چکیده
A novel approach for assessing the structural health of cables in cable-stayed bridges, under varying load patterns, was presented. The method aimed to evaluate cable conditions by utilizing phase space analysis while minimizing traffic disruptions and reducing the necessity for extensive sensor deployment. Through comprehensive numerical investigations on the Manavgat cable-stayed bridge, the efficacy of the proposed method was demonstrated. For this purpose, the time-domain responses of the deck were utilized. The combination of Change in Phase Space Topology (CPST) and Mahalanobis Distance (MD) indexes was applied to detect cable damage by discerning nuanced deviations in phase space trajectories. The results revealed that both the MD and CPST indexes exhibited impressive accuracy in identifying damage severity and location. To emphasize the robustness of the phase space-based damage detection method, a comparative analysis between the CPST and modal parameters was conducted. At the 10% damage level, the accuracy of CPST increased by 84.5% compared to the first mode frequency of the structure in load state 1. It highlighted the high sensitivity of CPST in cable damage detection.
کلیدواژه‌ها
Cable-stayed bridge؛ Structural Health Monitoring؛ Phase Space Method؛ Damage Detection؛ Time Domain Responses
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تعداد مشاهده مقاله: 98
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