This paper deals with the seismic retrofitting of R.C. framed building by means of steel eccentric bracing systems. The design method in elastic range [De Stefani, Lazzari, Scotta, 2009] is briefly resumed and its application to a plane RC existing frame is presented. Varying the value of the behavior factor, different retrofitting interventions are obtained. Thus, an acceptability evaluation of designed retrofittings is carried out through non-linear analysis. Finally, analytical relations, alternative to non-linear analysis, are proposed in order to estimate the obtained performance.
Valutazione dell’efficacia dell’adeguamento sismico di telai in cemento armato mediante controventi eccentrici ad Y
DE STEFANI, LORENZO;LAZZARI, MASSIMILIANO;SCOTTA, ROBERTO
2011
Abstract
This paper deals with the seismic retrofitting of R.C. framed building by means of steel eccentric bracing systems. The design method in elastic range [De Stefani, Lazzari, Scotta, 2009] is briefly resumed and its application to a plane RC existing frame is presented. Varying the value of the behavior factor, different retrofitting interventions are obtained. Thus, an acceptability evaluation of designed retrofittings is carried out through non-linear analysis. Finally, analytical relations, alternative to non-linear analysis, are proposed in order to estimate the obtained performance.
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