Shaking Table Tests of the Cable Tray System in Nuclear Power Plants
Publication: Journal of Performance of Constructed Facilities
Volume 31, Issue 4
Abstract
Two series of shaking table tests were performed to investigate the seismic performance and damping ratio of the cable tray system in nuclear power plants. The required response spectrum of compatible floor-motion time histories was generated as the input motions to the shaking table. The full cable tray (100% loading) behaved elastically in the five operating basis earthquakes, and 1.5 times of safety shutdown earthquake (1.5SSE) excitations, while buckling damage occurred at the bottom of the column in the 2.0SSE. The experimental component acceleration amplification (CAA) factor is larger than that given by current codes. To determine the relationships between the loading ratio and both damping ratio and fundamental frequency, the cable tray was excited through the shaking table with white noise that has peak accelerations ranging from 0.1 to . The results show that the observed damping ratios are smaller than those specified in code provisions. This study shows that shaking table tests should be conducted to define a more-reliable damping value for the cable trays in nuclear power plants. Finally, a preliminary fragility analysis was conducted using the CAA factor as the indicator.
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Acknowledgments
This work was supported by China National Science and Technology Major Project (Grants 2013ZX06005004-002-001 and 2016YFE0105600) and China National Science Foundation (Grants 51078290, 51578411, 51608381, and 51578405). This support is greatly acknowledged.
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Information & Authors
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Published In
Journal of Performance of Constructed Facilities
Volume 31 • Issue 4 • August 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Apr 23, 2016
Accepted: Nov 8, 2016
Published ahead of print: Feb 14, 2017
Published online: Feb 15, 2017
Discussion open until: Jul 15, 2017
Published in print: Aug 1, 2017
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