NUMERICAL ANALYSIS OF TSUNAMI-INDUCED PRESSURE AND FORCE ACTING ON BUILDING SLABS

Abstract

 Tsunami-induced pressure and force acting on an elevated slab inside a building with openings were investigated numerically. Numerical results showed that the cross-shore distribution of the maximum pressure acting on the ceiling of the first floor depended on wave conditions, opening ratios, and installation heights of openings. If the wave condition and the opening ratio of the seaward wall were same, the maximum force acting on the slab between the first and second floors increased with an increase in the ratio of the opening ratio of the seaward wall to that of the landward wall. This suggested that the slab can be subjected to larger tsunami force if openings in the wall on the side facing the tsunami are larger than those in the opposite wall.