| Abstract | For a seismic risk analysis, the seismic hazard results are usually combined with fragility functions to calculate the probability of seismic losses. Because vector‐valued ground‐motion intensity measures (IMs) are increasingly used by researchers and practicing engineers to evaluate fragility functions, seismic hazard calculations in terms of vector‐valued IMs are required, which are determined by vector‐valued probabilistic seismic hazard analysis (PSHA). However, the large computational cost associated with vector‐valued PSHAs impedes the application of vector‐valued IMs in performing a seismic risk analysis. The study presents a simplified method for conducting vector‐valued PSHAs. This simplified method is developed using proposed equivalent earthquakes that are derived from conventional seismic hazard deaggregation. Formulas for performing vector‐valued PSHAs using the simplified method are also proposed. Based on a numerical example, this study demonstrates the accuracy and efficiency of the proposed method. |
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