Simulation of the tsunami waves interaction with bridge piers with different arrangements using SPH

A tsunami disaster is one of the most devastating natural hazards; it not only causes loss of life, but also destroys infrastructure such as buildings and bridges. In recent years, the Smoothed Particle Hydrodynamics (SPH) method is used as a mesh-free method for modeling free surface flows and analyzing fluid hydrodynamics. In this paper, the tsunami wave hydrodynamic effect on vertical columns with different distance between them is investigated with SPH model. First, the modeling was verified with laboratory results. The modeling results have been consistent with previous researches data. Then, to investigate blockage, four different state are modeled with two and three columns. The results showed that as the distance between the bases is higher, the velocity in the floor increases. Also, reducing the distance between the columns increases the average of force applied to the columns. Therefore, in structures with such conditions, the effect of distance on the fluid velocity and forces should be considered at the same time and the optimal state according to the problem conditions should be selected.