Abstract
This paper studies a dynamic testing method called dynamic displacement testing (DDT). Similar procedures to this method have been used in the past to perform experimental testing; however, the procedure was never acknowledged as a specific testing method, and therefore, its errors have never been investigated. The method analyzes the finite-element (FE) model of a structure under dynamic base excitation and applies the obtained displacement time history to the specimen in the laboratory. Sensitivity analyses using 3D continuum (representing the actual specimen) and 2D macro FE models are performed on steel and reinforced concrete bridge pier case studies to detect and quantify significant sources of error associated with this method. Furthermore, 500 Monte Carlo simulations are performed for each case study to assess the variability of the responses. It is shown that the method could apply 30% and 18% errors into displacement and energy dissipation responses, respectively. However, calibrating the FE models at material and element levels could significantly increase the accuracy and precision of the method.
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Data Availability Statement
All the data presented in this study can be made available by the corresponding author upon reasonable request.
Acknowledgments
The financial contribution of the Natural Sciences and Engineering Research Council (NSERC) of Canada through the Discovery Grant was critical for conducting this research and has been gratefully acknowledged.
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Journal of Bridge Engineering
Volume 28 • Issue 11 • November 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Oct 19, 2022
Accepted: Jul 11, 2023
Published online: Sep 7, 2023
Published in print: Nov 1, 2023
Discussion open until: Feb 7, 2024
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