A procedure for the selection of input ground motion for 1D seismic response analysis

In dynamic analyses aimed to the prediction of seismic site response or devoted to the assessment of the seismic performance of geotechnical systems, the use of real strongmotion records as input motions is strongly recommended. The results of such analyses are significantly influenced by the characteristics of the input motions and, thus, the criteria for its selection represent a crucial issue. In this paper a procedure for the selection of strong-motion records suitable for 1D seismic response analyses is presented. The interval of periods to be considered for the application of matching criteria with a target spectrum, when dealing with geotechnical systems, is also indicated. Since the research activities summarized in this paper were carried in the framework of the Work Package “Linea di ricerca MT1” of the 2014-16 Reluis project, the proposed procedure is applied to a strategic site of the city of Messina (Italy).