ABSTRACT: Steel stay cables are widely used in modern bridges and large span roofs. Unfortunately, long stay cables are particularly prone to dynamic excitation, due to both the very small inherent cable damping and the resonance between the cable natural frequencies and the dominant frequencies of environmental actions. Viscous dampers, located close to one cable end, are among the most common tools used to suppress cable vibrations. The performances of these solutions however, are optimal only within a relatively narrow frequency range. In the present work, distributed damping systems are studied and their effectiveness is analytically evaluated. In mitigating broad-band frequency excitation, a better efficiency of such systems is proved, with respect to the lumped damping ones.
A. Benedetti, N. Cosentino (2005). Distributed energy dissipation system for stay cables. ROTTERDAM : Millpress.
Distributed energy dissipation system for stay cables
BENEDETTI, ANDREA;COSENTINO, NICOLA
2005
Abstract
ABSTRACT: Steel stay cables are widely used in modern bridges and large span roofs. Unfortunately, long stay cables are particularly prone to dynamic excitation, due to both the very small inherent cable damping and the resonance between the cable natural frequencies and the dominant frequencies of environmental actions. Viscous dampers, located close to one cable end, are among the most common tools used to suppress cable vibrations. The performances of these solutions however, are optimal only within a relatively narrow frequency range. In the present work, distributed damping systems are studied and their effectiveness is analytically evaluated. In mitigating broad-band frequency excitation, a better efficiency of such systems is proved, with respect to the lumped damping ones.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
