In this paper a simplified direct assessment method for nonlinear structures equipped with nonlinear fluid viscous dampers is proposed. The effect of this typology of damping system is usually identified with an equivalent supplemental damping ratio, which depends on the maximum displacement of the structure, so that iterative procedures are required. The method proposed in this study is composed by two steps. The first one provides the direct estimate of the supplemental damping ratio under elastic conditions. The second step extends the procedure to structures with nonlinear behaviour. The direct method has then been applied to a set of different RC frames. Its effectiveness has been studied through comparisons with several nonlinear dynamic analyses. Moreover, an investigation has been performed with regard to the influence of the relations that define the damping reduction factor and the hysteretic damping.

Landi, L., Fabbri, O., Diotallevi, P. (2014). Direct assessment of the nonlinear seismic response of RC frames with viscous dampers. Oakland, California : Earthquake Engineering Research Institute [10.4231/D3VM42Z00].

Direct assessment of the nonlinear seismic response of RC frames with viscous dampers

LANDI, LUCA;DIOTALLEVI, PIER PAOLO
2014

Abstract

In this paper a simplified direct assessment method for nonlinear structures equipped with nonlinear fluid viscous dampers is proposed. The effect of this typology of damping system is usually identified with an equivalent supplemental damping ratio, which depends on the maximum displacement of the structure, so that iterative procedures are required. The method proposed in this study is composed by two steps. The first one provides the direct estimate of the supplemental damping ratio under elastic conditions. The second step extends the procedure to structures with nonlinear behaviour. The direct method has then been applied to a set of different RC frames. Its effectiveness has been studied through comparisons with several nonlinear dynamic analyses. Moreover, an investigation has been performed with regard to the influence of the relations that define the damping reduction factor and the hysteretic damping.
2014
NCEE 2014 - 10th U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering
4855
4865
Landi, L., Fabbri, O., Diotallevi, P. (2014). Direct assessment of the nonlinear seismic response of RC frames with viscous dampers. Oakland, California : Earthquake Engineering Research Institute [10.4231/D3VM42Z00].
Landi, L.; Fabbri, O.; Diotallevi, P.P.
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/552034
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact