A RISK-TARGETED SEISMIC DESIGN MAP FOR THEGOLESTAN PROVINCE IN IRAN

This paper assesses the risk-targeted map for the Golestan province in Iran using the iterativeintegration procedure. In this approach, the ground motion values are estimated based on thephilosophy of a uniform risk level, which differs from the traditional approach of a uniform hazardspectrum. To do so, first, a classical seismic hazard analysis is performed in the region to derive thehazard curves. Then, a generic fragility curve to cover variabilities in structures is employed. Theanalysis is performed for peak ground acceleration and critical spectral acceleration (S۰.۲ and S۱.۰). Theresults indicate that PGA values for a risk-targeted ۱% probability of collapse in ۵۰ years varybetween ۰.۱۰g and ۰.۵۵g. This value is higher than the values available in national seismic code likeStandard-۲۸۰۰. Therefore, the results from this study can be used in the next revision of the nationalseismic code in Iran.

کلیدواژه ها:

Uniform Risk Map ، Risk-targeted Map ، Generic Fragility Curve ، Gorleston Province