Seismic mitigation of existing masonry structures by means of added damping and stiffness

Merenda, Dario Giuseppe (2012) Seismic mitigation of existing masonry structures by means of added damping and stiffness. [Laurea magistrale], Università di Bologna, Corso di Studio in Civil engineering [LM-DM270], Documento ad accesso riservato.
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In this work seismic upgrading of existing masonry structures by means of hysteretic ADAS dampers is treated. ADAS are installed on external concrete walls, which are built parallel to the building, and then linked to the building's slab by means of steel rod connection system. In order to assess the effectiveness of the intervention, a parametric study considering variation of damper main features has been conducted. To this aim, the concepts of equivalent linear system (ELS) or equivalent viscous damping are deepen. Simplified equivalent linear model results are then checked respect results of the yielding structures. Two alternative displacement based methods for damper design are herein proposed. Both methods have been validated through non linear time history analyses with spectrum compatible accelerograms. Finally ADAS arrangement for the non conventional implementation is proposed.

Tipologia del documento
Tesi di laurea (Laurea magistrale)
Autore della tesi
Merenda, Dario Giuseppe
Relatore della tesi
Correlatore della tesi
Corso di studio
Ordinamento Cds
Parole chiave
seismic upgrading, ADAS damper, equivalent linear system, equivalent viscous damping, masonry structures, spectrum compatible accelerograms, STRAUS7, MATLAB
Data di discussione della Tesi
19 Marzo 2012

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