Article
Tsunami hydrodynamic force on a building using a SPH real‑scale numerical simulation
Fuerza hidrodinámica del tsunami en un edificio utilizando una simulación numérica a escala real de la SPH
Registro en:
Natural Hazards (2020) 100:89–109
0921-030X
Autor
Klapp, Jaime
Areu Rangel, Omar S.
Cruchaga, Marcela
Aránguiz Muñoz, Rafael Enrique
Bonasia, Rosanna
Godoy, Mauricio J.
Silva‑Casarín, Rodolfo
Resumen
One of the most important aspects in tsunami studies is the behaviour of the wave when it
approaches the coast. Information on physical parameters that characterize waves is often
limited because of the difculties in achieving accurate measurements at the time of the
event. The impact of a tsunami on the coast is governed by nonlinear physics, such as turbulence with spatial and temporal variability. The use of the smoothed particle hydrodynamic method (SPH) presents advantages over models based on two-dimensional shallow
waters equations, because the assumed vertical velocity simplifes the hydrodynamics in
two dimensions. The study presented here reports numerical SPH simulations of the tsunami event which occurred in Coquimbo (Chile) in September, 2015. On the basis of the
reconstruction of the physical parameters that characterized this event (fow velocities,
direction and water elevations), calibrated by a reference model, the force values on buildings in the study area were numerically calculated and compared with an estimate given by
the Chilean Structural Design Standard. Discussion and conclusions of the comparison of
both methodologies are presented, including an analysis of the infuence of the topographic
details of the model in the estimation of hydrodynamic forces.