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Smart Structures and Systems Volume 26, Number 5, November 2020 , pages 667-680 DOI: https://doi.org/10.12989/sss.2020.26.5.667 |
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Performance assessment of bridges using short-period structural health monitoring system: Sungsu bridge case study |
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Mosbeh R. Kaloop, Mohamed Elsharawy, Basem Abdelwahed, Jong Wan Hu and Dongwook Kim
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| Abstract | ||
| This study aims at reporting a systematic procedure for evaluating the static and dynamic structural performance of steel bridges based on a short-period structural health monitoring measurement. Sungsu bridge located in Korea is considered as a case study presenting the most recent tests carried out to examine the bridge condition. Short-period measurements of Structural Health Monitoring (SHM) system were used during the bridge testing phase. A novel symmetry index is introduced using statistical analyses of deflection and strain measurements. Frequency Domain Decomposition (FDD) is implemented to the strain measurements to estimate the bridge mode shapes and damping ratios. Furthermore, Markov Chain Monte Carlo (MCMC) is also implemented to examine the reliability of bridge performance while ambient design trucks are in static or moving at different speeds. Strain, displacement and acceleration were measured at selected locations on the bridge. The results show that the symmetry index can be an efficient and useful measure in assessing the steel bridge performance. The results from the used method reveal that the performance of the Sungsu bridge is safe under operational conditions. | ||
| Key Words | ||
| bridge; output-only; behavior; frequency domain decomposition complex | ||
| Address | ||
| (1) Mosbeh R. Kaloop, Jong Wan Hu, Dongwook Kim: Department of Civil and Environmental Engineering, Incheon National University, Korea (2) Mosbeh R. Kaloop, Jong Wan Hu: Incheon Disaster Prevention Research Center, Incheon National University, Incheon, Korea (3) Mosbeh R. Kaloop: Public Works and Civil Engineering Department, College of Engineering, Mansoura University, Egypt (4) Mohamed Elsharawy: Civil and Construction Engineering Department, College of Engineering, Imam Abdulrahman Bin Faisal University, Saudi Arabia (5) Basem Abdelwahed: Structural Engineering Department, College of Engineering, Mansoura University, Egypt | ||