The performance capacities of the damped cable system are evaluated by the results of an experimental campaign developed on a full-scale three-story rein-forced concrete structure retrofitted by this innovative protective technology. The experimental activity, carried out as part of a European Community funded Research Project, consisted in repeated series of forced vibration tests, which of-fered a first realistic verification of the system response capabilities. This pro-vided essential information on the on-site behaviour of the assembled system components, among which cable connections with fluid viscous spring-dampers and story beams. The dynamic test results, elaborated in terms of equivalent transmissibility coefficients, energy dissipated by the spring-dampers and the en-tire structure, relevant energy ratios, and equivalent viscous damping coefficients, showed a significant improvement of structural performance in rehabilitated conditions, as well as a satisfactory correlation with design predictions. The analytical model of the structure, properly calibrated on the experimental data, was also used for a numerical seismic investigation, which confirmed the high degree of protection guaranteed by the examined technol-ogy.

Verification of damped cable system performance in the seismic rehabilitation of buildings

SORACE, Stefano;
2003-01-01

Abstract

The performance capacities of the damped cable system are evaluated by the results of an experimental campaign developed on a full-scale three-story rein-forced concrete structure retrofitted by this innovative protective technology. The experimental activity, carried out as part of a European Community funded Research Project, consisted in repeated series of forced vibration tests, which of-fered a first realistic verification of the system response capabilities. This pro-vided essential information on the on-site behaviour of the assembled system components, among which cable connections with fluid viscous spring-dampers and story beams. The dynamic test results, elaborated in terms of equivalent transmissibility coefficients, energy dissipated by the spring-dampers and the en-tire structure, relevant energy ratios, and equivalent viscous damping coefficients, showed a significant improvement of structural performance in rehabilitated conditions, as well as a satisfactory correlation with design predictions. The analytical model of the structure, properly calibrated on the experimental data, was also used for a numerical seismic investigation, which confirmed the high degree of protection guaranteed by the examined technol-ogy.
2003
978-1-85312-984-1
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11390/685645
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