REXELite, online record selection for the ITalian ACcelerometric Archive

This paper presents REXELite, an internet version, operating on the ITalian ACcelerometric Archive (IT ACA), of REXEL, a software developed for automatic selection of ground motion suites for nonlinear dynamic analy sis of structures. REXELite allows to search for horizontal combinations of seven 1or 2-components strong mo tion records, compatible on average with a specified tar get spectrum. More specifically, REXELite: (1) autom atically builds code spectra for any limit-state according to Eurocode 8 and the new Italian buildi ng code; (2) searches, in ITACA, the set of seven records having the most simi lar spectral shape with respect to that of the code , and whose average also matches the target spectrum in a userspecified period range and with the desired toleran ce. The records are selected according to specific features , in terms of magnitude, distance and soil conditio ns, selected by the user. The set of accelerograms of the combinati o may include unscaled (original) or amplitude-sca led records. REXELite was developed, by the authors, as a partner ship of ReLUIS ( Rete dei Laboratori Universitari di Ingegneria Sismica ) and the INGV ( Istituto Nazionale di Geofisica e Vulcanologia ) within the S4 Project funded by the Italian DPC ( Dipartimento della Protezione Civile ).