Anti-seismic displacement dependent devices are used to improve the dynamic characteristics of the structural system of buildings and bridges. Performance and functional requirements of energy dissipating devices are specified in most new seismic design codes. In this paper nonlinear dissipative capacity of hysteretic dampers is evaluated by specific experimental tests and compared with the Italian code testing requirements. Quasi-static and dynamic experimental testing have been performed on U-shaped flexural steel plates (UFPs) devices. Controlled-displacement tests considering a specific loading protocol have been performed to define the cyclic behavior of UFPs. Shaking table testing considering a random sequence of seismic inputs have been carried out on a 3D, 2:3 scaled, three-storey post-tensioned timber framed building with dissipative bracing systems based on UFPs. The reliability of the testing procedures required by codes for prototype and production control tests is discussed in terms of number of cycles and of cycles to failure.
Testing requirements of hysteretic energy dissipating devices according to Italian seismic code
Ponzo F. C.;Di Cesare A.;Lamarucciola N.;Nigro D.
2019-01-01
Abstract
Anti-seismic displacement dependent devices are used to improve the dynamic characteristics of the structural system of buildings and bridges. Performance and functional requirements of energy dissipating devices are specified in most new seismic design codes. In this paper nonlinear dissipative capacity of hysteretic dampers is evaluated by specific experimental tests and compared with the Italian code testing requirements. Quasi-static and dynamic experimental testing have been performed on U-shaped flexural steel plates (UFPs) devices. Controlled-displacement tests considering a specific loading protocol have been performed to define the cyclic behavior of UFPs. Shaking table testing considering a random sequence of seismic inputs have been carried out on a 3D, 2:3 scaled, three-storey post-tensioned timber framed building with dissipative bracing systems based on UFPs. The reliability of the testing procedures required by codes for prototype and production control tests is discussed in terms of number of cycles and of cycles to failure.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
