Open-Space Damping System Description, Theory, and Verification
Publication: Journal of Structural Engineering
Volume 143, Issue 4
Abstract
Seismic energy dissipation systems are typically installed in buildings within diagonal or chevron bracing to improve the seismic performance by reducing drift, and under certain conditions by reducing acceleration. Alternative installation methods have been developed in which novel mechanisms are used to magnify the displacements within the damping system, and thus improve performance when drift is small, and to reduce the cost of the damping system. Examples are the lever-arm, the toggle-brace, the coupled-truss, and the scissor-jack damper systems, which have found a limited number of applications. All damping system installation methods visually and physically obstruct an otherwise accessible area within the bay of the frame to which they are installed. This drawback has resulted in the occasional rejection of use of damping systems by architects. This paper introduces a novel configuration for damping devices with the main advantage of preserving open space within the frame of installation (hence the name open space damping system). The paper introduces the concept, presents the theory, and then presents computational models to verify the theory and to investigate the effects of the frame configuration, frame deformations, large rotations of the damping system, and frame inelastic action on the effectiveness of the system.
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Acknowledgments
The authors gratefully acknowledge the financial support by the Turkish Government in terms of a scholarship (stipend and tuition) for graduate studies to the first author. Moreover, the authors wish to thank Mr. Douglas P. Taylor and Mr. John Metzger of Taylor Devices, Inc., North Tonawanda, New York, for their support of the work in the development of the open-space damping system and for many inspiring discussions.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 143 • Issue 4 • April 2017
Copyright
©2016 American Society of Civil Engineers.
History
Received: Oct 10, 2015
Accepted: Sep 13, 2016
Published online: Oct 26, 2016
Discussion open until: Mar 26, 2017
Published in print: Apr 1, 2017
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