ANTI-TSUNAMI MEASURES FOR BRIDGES USING PARTIAL FAIRINGS AND GRATING SLABS

Abstract

The effects of partial fairings and open grating slabs on reducing tsunami-induced forces on bridges were studied. Fairings are an effective measure to reduce drag, but have limited effect on reducing lift. Therefore, this study conducted numerical simulations with the objective of identifying an effective combination consisting of a partial fairing and an open grating floor slab. The results showed that a fairing that covers more than 75% of the length with an open grating slab could reduce drag by more than 20% and the lift by more than 30% compared to the original bridge model.