Seismic hazard analysis and ground motion selection considering directivity effects
Selecting appropriate ground motion ensembles is a key step in assessing the seismic performance of engineered systems through time-domain seismic response analyses. Recent developments in earthquake rupture forecast and ground motion models (GMMs) provide the engineering community with advanced empirical models to consider physical processes such as rupture directivity in seismic hazard calculations. This study presents an example application of such models to assess the seismic hazard in the near-fault region and subsequently select ground motion ensembles that appropriately represent the target hazard. Implications of the variability in the selected ground motion characteristics are discussed in terms of the demand hazard and collapse fragility.
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