OSCILLATION CHARACTERISTICS OF RIVER BRIDGE AND RIVER BANK DURING FLOOD

Abstract

Oscilation characteristics of river bridge and river bank during flood were examined. Oscilation of Acceleration was measured by original sensor. The results showed that the higher water level become the higher power spectrum of measured acceleration become. The acceleration value was different between bridge piers. The result indicated that the acceleration measurement could represent the main flow direction of during flood. The peak value of acceleration indicated that influence of flood and wind The measured results also indicated that river bank vibrates, too. The characteristic of river bank oscilation was under influence of bridge oscilation. The power spectrum of river bridge and river bank had same frequency components. These results indicated validity of this method for health monitoring of river structures.