Flow vortexes are generated at the surrounding
area of a bridge pier when water passes through
it. This phenomenon could cause severe
erosion at the bottom of a pier and therefore, it
is a threat to stability of the pier, especially
during flood events. This research’s aim is to
develop a soft device that could effectively
eliminate or reduce the vortex phenomenon,
and then slow down the bed erosion, so as to
protect bridge pier.