[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.12989/eas.2015.9.1.029

Comparative study of the seismic response of RC framed buildings retrofitted using modern techniques

Mazza, Fabio (Dipartimento di Ingegneria Civile, Universita della Calabria)

Publication Information

Earthquakes and Structures / v.9, no.1, 2015 , pp. 29-48 More about this Journal

Abstract

The main purpose of this work is to compare different criteria for the seismic strengthening of RC framed buildings in order to find the optimal combinations of these retrofitting techniques. To this end, a numerical investigation is carried out with reference to the town hall of Spilinga (Italy), an RC framed structure with an L-shaped plan built at the beginning of the 1960s. Five structures are considered, derived from the first by incorporating: carbon fibre reinforced polymer (FRP)-wrapping of all columns; base-isolation, with high-damping-laminated-rubber bearings (HDLRBs); added damping, with hysteretic damped braces (HYDBs); FRP-wrapping of the first storey columns combined with base-isolation or added damping. A three-dimensional fibre model of the primary and retrofitted structures is considered; bilinear and trilinear laws idealize, respectively, the behaviour of the HYDB, providing that the buckling be prevented, and the FRP-wrapping, without resistance in compression, while the response of the HDLRB is simulated by using a viscoelastic linear model. The effectiveness of the retrofitting solutions is tested with nonlinear dynamic analyses based on biaxial accelerograms, whose response spectra match those in the Italian seismic code.

Keywords

seismic retrofit of framed buildings; fibre-reinforced-polymer structure; base-isolated structure; added-damping structure; nonlinear dynamic analysis;

Citations & Related Records

Times Cited By KSCI : 1 (Citation Analysis)

Reference
Cited By KSCI

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