Abstract
It is well known that the axial load can largely vary during a seismic event, playing an important role in the seismic performance of RC columns. In existing buildings this problem can be even more significant than in new ones, since the material can easily present poor mechanical properties. The paper is aimed at investigating the role of the axial load variation on the seismic capacity of RC columns, evaluated in terms of limit chord rotation and shear force, according to Eurocode 8. The research is performed with reference to a case-study, which is a doubly symmetric 4-storey RC framed building. The axial load variation affects both the seismic response and the capacity of the columns of the case-study, and, therefore, their seismic performance. Special attention has been paid to the role of the effective concrete strength of columns on the sensitivity of the seismic performance to the axial load variation.
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References
Abbasnia R, Mirzadeh N, Kildashti K (2011) Assessment of axial force effect on improved damage index of confined RC beam-column members. Int J Civ Eng 9(3):237–246
Cristofaro MT (2009) Metodi di valutazione della resistenza a compressione del calcestruzzo di strutture in c.a. esistenti. PhD dissertation, Università di Firenze
Cristofaro MT, D’Ambrisi A, De Stefano M, Pucinotti R, Tanganelli M (2012) Studio sulla dispersione dei valori di resistenza a compressione del calcestruzzo di edifici esistenti. Il giornale delle prove non distruttive, monitoraggio, diagnostica., vol. 2/2012, p 32–39, ISSN: 1721–7075
De Stefano M, Tanganelli M, Viti S (2013a) Effect of the variability in plan of concrete mechanical properties on the seismic response of existing RC framed structures. Bull Earthq Eng 11:1049–1060. doi:10.1007/s10518-012-9412-5
De Stefano M, Tanganelli M, Viti S (2013b) On the variability of concrete strength as a source of irregularity in elevation for existing RC buildings: a case study. Bull Earth Eng. doi:10.1007/s10518-013-9463-2
De Stefano M, Tanganelli M, Viti S (2014a) Variability in concrete mechanical properties as a source of in-plan irregularity for existing RC framed structures. Eng Struct. doi:10.1016/j.engstruct.2013.10.027
De Stefano M, Mariani V, Tanganelli M, Viti S (2014b) The influence of the axial load variation on the seismic capacity of existing RC buildings. In: Proc. 2 European Conference on Earthquake Engineering, Istanbul 2014
De Stefano M, Tanganelli M, Viti S (2015) Torsional effects due to concrete strength variability in existing buildings. Earthquake and Structures, 8(2):379–399
Itaca (2008) Database of the Italian strong motions data. http://itaca.mi.ingv.it
Mander JB, Priestley MJN, Park R (1988) Theoretical stress-strain model for confined concrete. J Struct Div ASCE 114:1804–1826
Saadeghvaziri MA (1997) Nonlinear response and modeling of RC columns subjected to varying axial load. Eng Struct 19(6):417–424
Seismosoft (2006) Seismostruct version 5.2.2 – a computer program for static and dynamic nonlinear analysis of framed structures. Available online from URL: www.seismosoft.com
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Mariani, V., Tanganelli, M., Viti, S., De Stefano, M. (2016). The Influence of Axial Load Variation on the Seismic Performance of RC Buildings. In: Zembaty, Z., De Stefano, M. (eds) Seismic Behaviour and Design of Irregular and Complex Civil Structures II. Geotechnical, Geological and Earthquake Engineering, vol 40. Springer, Cham. https://doi.org/10.1007/978-3-319-14246-3_14
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DOI: https://doi.org/10.1007/978-3-319-14246-3_14
Publisher Name: Springer, Cham
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