Seismic Resilience Upgrade of RC Frame Building Using Self-Centering Concrete Walls with Distributed Friction Devices
Publication: Journal of Structural Engineering
Volume 143, Issue 12
Abstract
This paper presents the seismic upgrade of existing frame structures by using the self-centering (SC) concrete wall with friction dampers. Working principle, numerical simulation, and design procedure of the upgrade system are introduced, and application was made in the seismic resilience upgrade of a five-story reinforced concrete (RC) frame building located in a high-seismicity area in China. The original building, as a corridor, connects two adjacent buildings and was evaluated as seismically deficient. Three posttensioned concrete walls with friction devices were therefore used to provide self-centering capacity and supplemental energy dissipation. In situ vibration tests were conducted to obtain dynamic properties of the rehabilitated structure and to validate the numerical model. Dynamic nonlinear analyses of original and upgraded buildings subjected to the design-basis earthquake (DBE) and the maximum considered earthquake (MCE) are conducted, which confirm the design objectives and improved seismic resilience of the upgraded system. In addition, by controlling the deformation pattern of the frame, the weak story failure might be avoided.
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Acknowledgments
The financial support from the Ministry of Science and Technology of the People’s Republic of China under Grant No. 2016YFC0701400 and the National Natural Science Foundation of China under Grant Nos. 51378107 and 51278106 is gratefully acknowledged.
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Published In
Journal of Structural Engineering
Volume 143 • Issue 12 • December 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Jul 24, 2016
Accepted: May 31, 2017
Published online: Sep 23, 2017
Published in print: Dec 1, 2017
Discussion open until: Feb 23, 2018
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