Analytical and Experimental Study of Toggle-Brace-Damper Systems
Publication: Journal of Structural Engineering
Volume 131, Issue 7
Abstract
The toggle-brace mechanism has been recognized as an effective installation configuration of viscous dampers to a stiff structural system. In this paper, a toggle-brace-damper configuration with dampers directly installed to the beam–column joints is presented. To facilitate practical applications, a procedure for determining the relationship between the displacement magnification factor and the geometry of the toggle-brace mechanism is established. Shaking table tests are conducted to investigate the seismic responses of a three-story steel model structure with and without linear viscous dampers. The installation configurations of the dampers include the toggle-brace-damper and the diagonal-brace-damper systems. The test results show that the toggle-brace system is more efficient in enhancing the seismic response control on a stiff structure. However, due to the fact that the gaps existing in the hinge connections of the toggle-brace-damper system may affect the contribution of damping ratio to the structure, special care must be taken when installing toggle-brace-damper systems in practical applications.
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Acknowledgments
The financial support of this study was from the National Science Council under Grant Nos. UNSPECIFIEDNSC-90-2625-Z011-003 and UNSPECIFIEDNSC-92-2625-Z011-002. The support of the National Center for Research on Earthquake Engineering is appreciated. The viscous dampers were provided by the Taylor Devices Inc. of North Tonawanda of New York. This support is acknowledged.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 131 • Issue 7 • July 2005
Pages: 1035 - 1043
Copyright
© 2005 ASCE.
History
Received: Dec 6, 2002
Accepted: Nov 12, 2004
Published online: Jul 1, 2005
Published in print: Jul 2005
Notes
Note. Associate Editor: Andrei M. Reinhorn
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