The following paper describes the experimental testing of U-shape flexural plates (UFPs) used as anti-seismic dissipative devices. UFP is a form of flexural dissipator, which exhibit a large stable hysteretic behavior, it is cheap to fabricate, flexible in application, robust and replaceable. Following recent researches, in this study experimental testing on different UFPs are performed in the structural laboratory of University of Basilicata – Italy as part of a main project that involves shaking table tests on a 3D, 2/3rd scaled, three-storey post-tensioned timber framed building (Pres-Lam) equipped with dissipative bracing systems. The hysteretic bracing systems is composed by V-inverted timber rigid rods and two UFPs in series, designed for each storey in order to yield in a controlled manner. The analytical estimations of the UFPs characteristics, such as initial stiffness and post-yield strength, are compared with the results of experimental cycling tests. Then, the equations predicting the force-displacement behaviour of the dissipators are optimized. Finally, the results of nonlinear time history analysis for the assessment of the performances of the dissipating system in controlling the structural response of Pres-Lam specimen are presented.
Experimental testing on U-shape steel devices for the application of dissipative bracing systems for post-tensioned timber framed buildings
Antonio Di Cesare;Felice Carlo Ponzo;Nicla Lamarucciola;Domenico Nigro;
2017-01-01
Abstract
The following paper describes the experimental testing of U-shape flexural plates (UFPs) used as anti-seismic dissipative devices. UFP is a form of flexural dissipator, which exhibit a large stable hysteretic behavior, it is cheap to fabricate, flexible in application, robust and replaceable. Following recent researches, in this study experimental testing on different UFPs are performed in the structural laboratory of University of Basilicata – Italy as part of a main project that involves shaking table tests on a 3D, 2/3rd scaled, three-storey post-tensioned timber framed building (Pres-Lam) equipped with dissipative bracing systems. The hysteretic bracing systems is composed by V-inverted timber rigid rods and two UFPs in series, designed for each storey in order to yield in a controlled manner. The analytical estimations of the UFPs characteristics, such as initial stiffness and post-yield strength, are compared with the results of experimental cycling tests. Then, the equations predicting the force-displacement behaviour of the dissipators are optimized. Finally, the results of nonlinear time history analysis for the assessment of the performances of the dissipating system in controlling the structural response of Pres-Lam specimen are presented.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
