Earthquake Loss Estimation Tool for Urban Areas

A software package, KoeriLoss2, is developed to perform earthquake damage estimation for urban areas based on detailed analyses of local site effects. The first stage of the approach involves generation of microzonation maps with respect to ground motion parameters for the investigated area using separately calculated regional seismic hazard input data. The effects of local geological and geotechnical site conditions are taken into account using representative soil profiles with shear wave velocities extending down to the engineering bedrock (V_s ⩾ 750m/s). 1D site response analyses are conducted using Shake91 to calculate an average site specific PGA and elastic acceleration response spectrum on the ground surface. In the second stage of the approach, vulnerability of the building and pipeline inventories are estimated using ground shaking parameters and empirical relationships. A pilot study is conducted for Zeytinburnu and Bakirkoy districts in Istanbul, Turkey to demonstrate the applicability of KoeriLoss2.