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D. Losanno¹, S. Zinno¹, G. Serino¹ and J. Londono²

¹Department of Structures for Engineering and Architecture, University of Naples Federico II, Italy
²Department of Mechanical Engineering, University of Bristol, United Kingdom

doi:10.4203/ccp.108.117

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D. Losanno, S. Zinno, G. Serino, J. Londono, "A Design Procedure in State-Space Representation for Seismic Retrofit of Existing Buildings with Viscous Dampers", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 117, 2015. doi:10.4203/ccp.108.117

Keywords: state-space representation, brace stiffness, Maxwell model, brace-damper compliance, supplemental damping.

Summary

The present paper proposes a non-iterative design procedure for the design of the seismic retrofit of existing buildings with viscous dampers supported by elastic-deformable braces. For taking into account the brace-damper compliance, dampers are arranged together with the supporting brace in a viscous-elastic assembly that needs to be represented by the Maxwell visco-elastic model. The force deformation relationship of such dampers is described by a first-order differential equation.

Herein, a symmetric system of equations for structures installed with Maxwell dampers has been developed by means of state-space representation. This new formulation, together with the control theory is used to select design parameters of both dampers and supporting braces to achieve the preselected target overall structural damping, once mass and stiffness properties of the bare structure are known. The procedure is applied for seismic retrofit of an existing moment resisting steel frame.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 108 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping Paper 117 A Design Procedure in State-Space Representation for Seismic Retrofit of Existing Buildings with Viscous Dampers D. Losanno¹, S. Zinno¹, G. Serino¹ and J. Londono² ¹Department of Structures for Engineering and Architecture, University of Naples Federico II, Italy ²Department of Mechanical Engineering, University of Bristol, United Kingdom doi:10.4203/ccp.108.117 purchase the full-text of this paper Full Bibliographic Reference for this paper D. Losanno, S. Zinno, G. Serino, J. Londono, "A Design Procedure in State-Space Representation for Seismic Retrofit of Existing Buildings with Viscous Dampers", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 117, 2015. doi:10.4203/ccp.108.117 Keywords: state-space representation, brace stiffness, Maxwell model, brace-damper compliance, supplemental damping. Summary The present paper proposes a non-iterative design procedure for the design of the seismic retrofit of existing buildings with viscous dampers supported by elastic-deformable braces. For taking into account the brace-damper compliance, dampers are arranged together with the supporting brace in a viscous-elastic assembly that needs to be represented by the Maxwell visco-elastic model. The force deformation relationship of such dampers is described by a first-order differential equation. Herein, a symmetric system of equations for structures installed with Maxwell dampers has been developed by means of state-space representation. This new formulation, together with the control theory is used to select design parameters of both dampers and supporting braces to achieve the preselected target overall structural damping, once mass and stiffness properties of the bare structure are known. The procedure is applied for seismic retrofit of an existing moment resisting steel frame. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £75 +P&P)
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