caa a22 4500 445847212 CHVBK 20180317145402.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10518-011-9272-4 doi (NATIONALLICENCE)springer-10.1007/s10518-011-9272-4 Equivalent viscous damping for steel concentrically braced frame structures [Elektronische Daten] [K. Wijesundara, R. Nascimbene, T. Sullivan] The direct displacement based seismic design procedure utilises equivalent viscous damping expressions to represent the effect of energy dissipation of a structural system. Various expressions for the equivalent viscous damping of different structural systems are available in the literature, but the structural systems examined in the past have not included concentrically braced frame structures. Thus, this study describes the development of an equivalent viscous damping equation for concentrically braced frame structures based on the hysteretic response of 15 different single storey models. Initially, equivalent viscous damping is calculated based on the area based approach and then corrected for the earthquake excitation. An iterative procedure is adopted to calibrate the equivalent viscous damping expression to the results of inelastic time history analyses using a number of spectrum-compatible real accelerograms. From the results of this research, a new damping expression is developed as a function of the ductility and the non dimensional slenderness ratio. Springer Science+Business Media B.V., 2011 Equivalent viscous damping nationallicence Non dimensional slenderness ratio nationallicence Ductility nationallicence Concentrically braced frame nationallicence Wijesundara K. European School for Advanced Studies in Reduction of Seismic Risk (ROSE School), IUSS, Via Ferrata 1, 27100, Pavia, Italy aut Nascimbene R. European Centre for Training and Research in Earthquake Engineering (EUCENTRE), Via Ferrata 1, 27100, Pavia, Italy aut Sullivan T. Department of Structural Mechanics, Universita' degli Studi di Pavia, Via Ferrata 1, 27100, Pavia, Italy aut Bulletin of Earthquake Engineering Springer Netherlands 9/5(2011-10-01), 1535-1558 1570-761X 9:5<1535 2011 9 10518 https://doi.org/10.1007/s10518-011-9272-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10518-011-9272-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wijesundara K. European School for Advanced Studies in Reduction of Seismic Risk (ROSE School), IUSS, Via Ferrata 1, 27100, Pavia, Italy aut NATIONALLICENCE 700 1- Nascimbene R. European Centre for Training and Research in Earthquake Engineering (EUCENTRE), Via Ferrata 1, 27100, Pavia, Italy aut NATIONALLICENCE 700 1- Sullivan T. Department of Structural Mechanics, Universita' degli Studi di Pavia, Via Ferrata 1, 27100, Pavia, Italy aut NATIONALLICENCE 773 0- Bulletin of Earthquake Engineering Springer Netherlands 9/5(2011-10-01), 1535-1558 1570-761X 9:5<1535 2011 9 10518 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer