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Long-Term Averaged Earthquake Loss Estimations for Istanbul

Session: Recent Engineering Uses of National Seismic Hazard Models [Poster]

Type: Poster

Date: 4/22/2021

Presentation Time: 11:30 AM Pacific

Description: 

We estimate the average annual losses (AELs) and loss ratios (AELRs) for Istanbul by making use of the state-of-the-art hazard input as well as the most recent building inventory dataset for the city. The ground motion input relies on the hazard model used in the latest version (2018) of national seismic hazard maps. The local soil information in terms of Vs30 distributions for Istanbul are incorporated in the computation of site specific ground motions. The building inventory data compiled in 2018 includes information on the type of lateral load resisting system, number of floors, construction year, number of dwellings, footprint areas and the building usage functions. Spectral acceleration-displacement based damage assessment methodology is implemented. Number of damaged buildings at different damage states for each building class is obtained. On the basis of direct structural damages, economic losses are estimated. Grid- and district-based spatial distributions of AALs and AALRs are presented. The AALR estimations are further compared with the recently updated earthquake insurance premium rates by the Turkish Catastrophe Insurance Pool (TCIP).

Presenting Author: Ufuk Hancilar

Student Presenter: No

Authors