This study focuses on the development and experimental assessment of the behaviour of suitable devices to be used as friction dampers along the edges of cladding panels in precast r/c buildings. The conception and design of such devices is based on a no-slip requirement under wind and moderate earthquake actions, while allowing for large displacements and consequent significant energy dissipation due to friction for higher intensity earthquakes. Elements were hence custom-built from the assemblage, through bolted connections, of steel profiles, in case with interposed brass plates, to obtain a more stable response under cyclic loadings. An experimental investigation has been performed in order to characterize the behaviour of these devices under cyclic loadings, including the displacement rate effect. The work is intended as prodromal to a wider assessment of the structural behaviour of precast r/c structures with friction damping paneledge connections performed in a companion paper. The work has been performed at the Laboratory for Materials and Structures Testing, Department of Structural Engineering, Politecnico di Milano, and has been supported by SPAV Prefabbricati, Martignacco (UD), Italy.
Dispositivi dissipatori ad attrito per pannelli di tamponamento in edifici prefabbricati: una indagine sperimentale
FERRARA, LIBERATO;FELICETTI, ROBERTO;TONIOLO, GIANDOMENICO;
2010-01-01
Abstract
This study focuses on the development and experimental assessment of the behaviour of suitable devices to be used as friction dampers along the edges of cladding panels in precast r/c buildings. The conception and design of such devices is based on a no-slip requirement under wind and moderate earthquake actions, while allowing for large displacements and consequent significant energy dissipation due to friction for higher intensity earthquakes. Elements were hence custom-built from the assemblage, through bolted connections, of steel profiles, in case with interposed brass plates, to obtain a more stable response under cyclic loadings. An experimental investigation has been performed in order to characterize the behaviour of these devices under cyclic loadings, including the displacement rate effect. The work is intended as prodromal to a wider assessment of the structural behaviour of precast r/c structures with friction damping paneledge connections performed in a companion paper. The work has been performed at the Laboratory for Materials and Structures Testing, Department of Structural Engineering, Politecnico di Milano, and has been supported by SPAV Prefabbricati, Martignacco (UD), Italy.File | Dimensione | Formato | |
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