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- W3082571927 abstract "Summary Vibration‐based structural identification is an essential technique for assessing structural conditions by inferring information from the dynamic characteristics of structures. However, the robustness of such techniques in monitoring the progressive damage of real structures has been validated with only a handful of research efforts, largely due to the paucity of monitoring data recorded from damaged structures. In a recent experimental program, a mid‐rise cold‐formed steel building was constructed at full scale atop a large shake table and subsequently subjected to a unique multi‐hazard scenario including earthquake, post‐earthquake fire, and finally post‐fire earthquake loading. Complementing the simulated hazard events, low‐amplitude vibration tests, including ambient vibrations and white noise base excitation tests, were conducted throughout the construction and the test phases. Using the vibration data collected during the multi‐hazard test program, this paper focuses on understanding the modal characteristics of the cold‐formed steel building in correlation with the construction and the structural damage progressively induced by the simulated hazard events. The modal parameters of the building (i.e., natural frequencies, damping ratios, and mode shapes) are estimated using two input–output and two output‐only time‐domain system identification techniques. Agreement between the evolution of modal parameters and the observations of the progression of physical damage demonstrates the effectiveness of the vibration‐based system identification techniques for structural condition monitoring and damage assessment." @default.
- W3082571927 created "2020-09-08" @default.
- W3082571927 creator A5021516542 @default.
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- W3082571927 date "2020-08-16" @default.
- W3082571927 modified "2023-10-10" @default.
- W3082571927 title "Evolution of modal characteristics of a mid‐rise cold‐formed steel building during construction and earthquake testing" @default.
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- W3082571927 doi "https://doi.org/10.1002/eqe.3316" @default.
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