Abstract

RIVAS, Miguel; LUNA, Patricia  and  LIZARAZO, Juan. Analytical fragility assessment of structures subjected to earthquake and tsunami loads: a case study on the colombian pacific coast. Tecnia [online]. 2019, vol.29, n.2, pp.169-173. ISSN 0375-7765.  http://dx.doi.org/10.21754/tecnia.v29i2.699.

This paper presents a procedure for the fragility assessment of structures subjected to earthquake and tsunami loads, by using the inelastic displacement accumulation as a measure of damage. The proposed methodology considers a non-linear static analysis (pushover) for the earthquake case, and a non-linear static load for the tsunami case, taking as a starting point the final condition of the structure after the occurrence of an earthquake. However, since the impulse force is the critical component of the tsunami load, a simplified approach in terms of the flow depth is used to estimate the total tsunami load. By combining the earthquake effect with the tsunami hazard, a function relating the earthquake spectral acceleration, the tsunami flow depth and the lateral drift is obtained. Finally, a case study of the typical timber structures located in the municipality of San Andrés de Tumaco, at the Colombian Pacific Coast, is analyzed in order to assess de proposed methodology. The fragility curves obtained allows to determine a new approach to the Multi-hazard risk assessment in areas prone to the occurrence of earthquakes and tsunamis.

Keywords : Structural Fragility; Multi-hazard risk assessment; Earthquake; Tsunami; Analytical fragility curves.

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