000011287 001__ 11287
000011287 005__ 20141205155855.0
000011287 04107 $$aeng
000011287 046__ $$k2008-10-12
000011287 100__ $$aPaolacci, Fabrizio
000011287 24500 $$aStudy of the Effectiveness of Steel Cable Dampers for the Seismic Protection of Electrical Equipment

000011287 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011287 260__ $$b
000011287 506__ $$arestricted
000011287 520__ $$2eng$$aThis paper deals with the problem of the seismic protection of high voltage electrical equipment by using steel cable dampers (wire-ropes). The wire-rope isolators, often used in shock and vibration problems, are here proposed as seismic isolation devices. The main results concerning an experimental campaign devoted to the identification of the mechanical characteristics of these devices, are illustrated and discussed. In particular, experimental tests, carried out on six different isolators and consisting of imposed harmonic displacements, have shown an asymmetric behaviour of the devices along the vertical direction (tension-compression) and a symmetric behaviour along the main horizontal directions (Shear, Roll). Moreover, the cycles are independent of excitation frequency and fully dissipative, which corresponds to have high values of damping ratio. Subsequently, using the classical Bouc-Wen model properly modified, the cycle behaviour of the isolators has been modeled and the relative parameters have been identified. Finally, the seismic response of a 420 kV circuit breaker, equipped with four wire-rope isolators, has been evaluated: the results confirm the high efficiency of the wire-rope as base isolation system.

000011287 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011287 653__ $$aWire-rope isolators, base isolation, electrical equipment, cyclic behaviour, experimental tests

000011287 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011287 720__ $$aPaolacci, Fabrizio$$iGiannini, Renato
000011287 8560_ $$ffischerc@itam.cas.cz
000011287 8564_ $$s886131$$uhttps://invenio.itam.cas.cz/record/11287/files/06-0099.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 06-0099.
000011287 962__ $$r9324
000011287 980__ $$aPAPER