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I. Nuzzo¹, D. Losanno², G. Serino² and L.M. Bozzo³

¹Department of Engineering, University of Naples Parthenope, Italy
²Department of Structures for Engineering and Architecture, University of Naples Federico II, Italy
³Luis Bozzo estructuras y proyectos, S.L., Barcelona, Spain

doi:10.4203/ccp.108.123

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I. Nuzzo, D. Losanno, G. Serino, L.M. Bozzo, "Simplified Nonlinear Analysis: Application to Damper-Braced Structures", 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 123, 2015. doi:10.4203/ccp.108.123

Keywords: simplified analysis, reduced ADRS spectrum, equivalent damping, strength reduction factor, energy dissipation, added devices.

Summary

This paper investigates the design of new or existing structures equipped with hysteretic dissipation devices by using simplified nonlinear analysis based on the definition of the strength reduction factor. In this paper a plane reinforced concrete frame retrofitted by means of properly designed dissipative braces is analysed. In particular, two different conditions are considered: when the bare frame behaves elastically or inelastically. The bare frame and the strengthened frame are subjected to nonlinear static analysis in order to obtain the corresponding strength reduction factor. This simple study is repeated varying the brace mechanical properties in order to investigate the effects on the strength reduction factor. The N2 method is employed to propose a procedure to follow in order to perform strength and ductile checks of the braced system. Finally some hints are given with respect to the possibility of design with equivalent damping and stiffness, according to the American guidelines FEMA 273 and 274.

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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 123 Simplified Nonlinear Analysis: Application to Damper-Braced Structures I. Nuzzo¹, D. Losanno², G. Serino² and L.M. Bozzo³ ¹Department of Engineering, University of Naples Parthenope, Italy ²Department of Structures for Engineering and Architecture, University of Naples Federico II, Italy ³Luis Bozzo estructuras y proyectos, S.L., Barcelona, Spain doi:10.4203/ccp.108.123 purchase the full-text of this paper Full Bibliographic Reference for this paper I. Nuzzo, D. Losanno, G. Serino, L.M. Bozzo, "Simplified Nonlinear Analysis: Application to Damper-Braced Structures", 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 123, 2015. doi:10.4203/ccp.108.123 Keywords: simplified analysis, reduced ADRS spectrum, equivalent damping, strength reduction factor, energy dissipation, added devices. Summary This paper investigates the design of new or existing structures equipped with hysteretic dissipation devices by using simplified nonlinear analysis based on the definition of the strength reduction factor. In this paper a plane reinforced concrete frame retrofitted by means of properly designed dissipative braces is analysed. In particular, two different conditions are considered: when the bare frame behaves elastically or inelastically. The bare frame and the strengthened frame are subjected to nonlinear static analysis in order to obtain the corresponding strength reduction factor. This simple study is repeated varying the brace mechanical properties in order to investigate the effects on the strength reduction factor. The N2 method is employed to propose a procedure to follow in order to perform strength and ductile checks of the braced system. Finally some hints are given with respect to the possibility of design with equivalent damping and stiffness, according to the American guidelines FEMA 273 and 274. 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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