Vibration of Prestressed Cable RC Truss Floor System due to Human Activity
Publication: Journal of Structural Engineering
Volume 142, Issue 5
Abstract
Vibration has become a serious serviceability problem due to the large openings of girder, lightweight floor systems, and high-strength materials used in practice. The results from both heel-drop and jumping floor vibration tests of a large-span prestressed cable RC truss (PCT) floor system are presented. System parameters such as peak acceleration, fundamental frequency, and damping ratios were considered and studied. The results and comparisons were taken based on the on-site test data. The comparison results indicate inconsistencies with the heel-drop or jumping impact models proposed by other researchers. The results from heel-drop and jumping tests were comprehensively compared against published codes. Based on the classic plate theory, a derived accurate formula for a PCT floor system is proposed. Lastly, a simplified method is suggested, which uses the constant moment of inertia for the cross section of a PCT girder.
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Acknowledgments
The authors are grateful for the financial support provided by the National Natural Science Foundation of China (51378244, 51178210, 51438001). The authors also appreciate Prof. Chen Y. for providing helpful discussions and Dr. Yang Yuan-Long for helping collect the data.
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Published In
Journal of Structural Engineering
Volume 142 • Issue 5 • May 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Oct 7, 2014
Accepted: Sep 22, 2015
Published online: Dec 17, 2015
Published in print: May 1, 2016
Discussion open until: May 17, 2016
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