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G. Leoni¹, S. Carbonari², M. Morici², L. Tassotti², A. Zona¹, G.E. Varelis³ and A. Dall'Asta¹

¹School of Architecture and Design, University of Camerino, Italy
²DICEA, Università Politecnica delle Marche, Italy
³Department of Mechanical Engineering, University of Thessaly, Greece

doi:10.4203/ccp.106.166

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G. Leoni, S. Carbonari, M. Morici, L. Tassotti, A. Zona, G.E. Varelis, A. Dall'Asta, "Nonlinear Seismic Analysis of Innovative Steel Frames with Infill Walls", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 166, 2014. doi:10.4203/ccp.106.166

Keywords: steel-concrete hybrid structures, steel structures, concrete shear walls, pushover analysis, nonlinear analysis, seismic analysis..

Summary

This paper is concerned with seismic resistant systems constructed with steel frames with reinforced concrete infill walls. Some innovations to overcome major drawbacks of classical systems, basically conceived as reinforced concrete shear walls, are introduced. The new system is configured to control the formation of diagonal struts in the infill walls; the energy dissipation takes place only in the vertical elements of the steel frame subjected mainly to axial forces without involving the reinforcement of the infill walls. A tailored procedure for the capacity design of the system is outlined. A numerical model for the nonlinear analysis, obtained with beam element and nonlinear links, is thus presented. A comparison of results with those obtained with refined finite element models, in which the reinforced concrete wall and the steel members are modelled with shell finite elements, is carried out. The proposed model is able to capture the sequence of wall cracking and yielding of ductile side elements. Finally, the procedure is applied to a six-storey building in order to demonstrate the capability of the innovative system to develop the dissipative mechanism.

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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: 106 PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: Paper 166 Nonlinear Seismic Analysis of Innovative Steel Frames with Infill Walls G. Leoni¹, S. Carbonari², M. Morici², L. Tassotti², A. Zona¹, G.E. Varelis³ and A. Dall'Asta¹ ¹School of Architecture and Design, University of Camerino, Italy ²DICEA, Università Politecnica delle Marche, Italy ³Department of Mechanical Engineering, University of Thessaly, Greece doi:10.4203/ccp.106.166 purchase the full-text of this paper Full Bibliographic Reference for this paper G. Leoni, S. Carbonari, M. Morici, L. Tassotti, A. Zona, G.E. Varelis, A. Dall'Asta, "Nonlinear Seismic Analysis of Innovative Steel Frames with Infill Walls", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 166, 2014. doi:10.4203/ccp.106.166 Keywords: steel-concrete hybrid structures, steel structures, concrete shear walls, pushover analysis, nonlinear analysis, seismic analysis.. Summary This paper is concerned with seismic resistant systems constructed with steel frames with reinforced concrete infill walls. Some innovations to overcome major drawbacks of classical systems, basically conceived as reinforced concrete shear walls, are introduced. The new system is configured to control the formation of diagonal struts in the infill walls; the energy dissipation takes place only in the vertical elements of the steel frame subjected mainly to axial forces without involving the reinforcement of the infill walls. A tailored procedure for the capacity design of the system is outlined. A numerical model for the nonlinear analysis, obtained with beam element and nonlinear links, is thus presented. A comparison of results with those obtained with refined finite element models, in which the reinforced concrete wall and the steel members are modelled with shell finite elements, is carried out. The proposed model is able to capture the sequence of wall cracking and yielding of ductile side elements. Finally, the procedure is applied to a six-storey building in order to demonstrate the capability of the innovative system to develop the dissipative mechanism. 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 £65 +P&P)
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