Analytical model to evaluate the equivalent viscous damping of timber structures with dowel-type fastener connections

Cristiano Loss, Daniele Zonta, Maurizio Piazza

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

The Equivalent Viscous Damping (EVD) parameter is used to simplify the dynamic problem, passing from a non-linear solution of the system to a simple linear-elastic one. In the case of Direct Displacement-Based seismic Design (DDBD) methods, the EVD value allows direct design of structures, without an iterative computational process. This paper proposes a rational analytical formula to evaluate the EVD value of timber structures with dowel-type metal fastener connections. The EVD model is developed at the ultimate limit state, as a solution of the equilibrium problem related to an inelastic configuration. For a specific joint configuration, the EVD predicted via an analytical model was compared to experimental results. The proposed EVD model was validated using non-linear dynamic analysis on a portal frame, built with dowel-type fasteners arranged in two concentric crowns.

Original languageEnglish
Title of host publicationWorld Conference on Timber Engineering 2012, WCTE 2012
Place of PublicationRed Hook, NY.
Pages516-525
Number of pages10
Volume2
Publication statusPublished - 2012
EventWorld Conference on Timber Engineering 2012: Strength and Serviceability - Extreme Events, WCTE 2012 - Auckland, New Zealand
Duration: 15 Jul 201219 Jul 2012

Conference

ConferenceWorld Conference on Timber Engineering 2012: Strength and Serviceability - Extreme Events, WCTE 2012
CountryNew Zealand
CityAuckland
Period15/07/1219/07/12

Keywords

  • dowel-type metal fasteners
  • equivalent viscous damping
  • moment resisting joint
  • non-linear dynamic analysis

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    Loss, C., Zonta, D., & Piazza, M. (2012). Analytical model to evaluate the equivalent viscous damping of timber structures with dowel-type fastener connections. In World Conference on Timber Engineering 2012, WCTE 2012 (Vol. 2, pp. 516-525). Red Hook, NY..