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Flexural performance correlation with natural bending frequency of post-tensioned concrete beam: experimental investigation

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Abstract

This study examines results obtained experimentally from two post-tensioned concrete beams subjected to static and dynamic tests. The static tests results were used to evaluate the level of flexural performance in the beams. Data obtained from the dynamic tests were used to identify the change in modal parameters that occurred after different performance levels. Static and dynamic responses of the beams were measured using several instruments including accelerometers, displacement transducers, and strain gauges. A tendon cut was also applied to each beam to observe its influence in the flexural performance and assess the vibration responses produced at the severing moment. Outcomes of this study demonstrate the correlation between performance and cracks propagation in the beams, and also explain the influence of the flexural performance level on the natural bending frequencies.

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Acknowledgments

This study is partially sponsored by a Japanese Society for the Promotion of Science (JSPS) Grant-in-Aid for Scientific Research (B) under project No. 19H02225, which is greatly appreciated.

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Correspondence to Chul-Woo Kim.

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Luna Vera, O.S., Oshima, Y. & Kim, CW. Flexural performance correlation with natural bending frequency of post-tensioned concrete beam: experimental investigation. J Civil Struct Health Monit 10, 135–151 (2020). https://doi.org/10.1007/s13349-019-00374-3

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  • DOI: https://doi.org/10.1007/s13349-019-00374-3

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