Abstract
An extensive experimental and theoretical research study was undertaken to study the vibration serviceability of a long-span prestressed concrete floor system to be used in the lounge of a major airport. Specifically, jumping impact tests were carried out to obtain the floor’s modal parameters, followed by an analysis of the distribution of peak accelerations. Running tests were also performed to capture the acceleration responses. The prestressed concrete floor was found to have a low fundamental natural frequency (≈ 8.86 Hz) corresponding to the average modal damping ratio of ≈ 2.17%. A coefficients βrp is proposed for convenient calculation of the maximum root-mean-square acceleration for running. In the theoretical analysis, the prestressed concrete floor under running excitation is treated as a two-span continuous anisotropic rectangular plate with simply-supported edges. The calculated analytical results (natural frequencies and root-mean-square acceleration) agree well with the experimental ones. The analytical approach is thus validated.
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Acknowledgment
The authors are grateful for the financial support provided by the National Natural Science Foundation of China (51438001) and the Fundamental Research Funds for the Central Universities (106112014CDJZR200001, 106112015CDJXZ208804), the Chongqing Basic and Frontier Research Project (cstc2014jcyjys30001) and the National Key Research and Development Program of China (Project N0. 2016YFC0701201). The authors also wish to express their gratitude to Dr. Y. Frank Chen (Professor at The Pennsylvania State University, USA) for providing valuable comments.
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Supported by: National Natural Science Foundation of China under Grant No. 51438001, Fundamental Research Funds for the Central Universities under Grant Nos. 106112014CDJZR200001 and 106112015CDJXZ208804, Chongqing basic and frontier research project under Grant No. cstc2014jcyjys30001 and National key research and development program of China under Grant No. 2016YFC0701201
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Cao, L., Liu, J., Li, J. et al. Experimental and analytical studies on the vibration serviceability of long-span prestressed concrete floor. Earthq. Eng. Eng. Vib. 17, 417–428 (2018). https://doi.org/10.1007/s11803-018-0450-0
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DOI: https://doi.org/10.1007/s11803-018-0450-0