An empirical method for determining the friction coefficient at the trunnion bearing of Cua Dat’ tainter gate

Abstract

   The friction coefficient at the trunnion bearing increases rapidly during operation of the gate due to avariety of reasons. Many serious failures have occurred in the world as well as in Vietnam due toincreased bearing friction. However, there is a lack of research in Vietnam on measurement method toexamine this friction coefficient. Within this research, the authors propose an empirical method fordetermining the friction coefficient at the trunnion bearing by analyzing the stress and strain statesimulated/obtained from the numerical model.The proposed method is adopted for the case study of a tainter gate in Cua Dat reservoir.