Abstract: When a pier is built in the waterway,the natural flow is disturbed,and turbulence around the pier is formed,which affects river bed evolution and channel stabilization of the water area near the bridge.Ship collisions with piers take place every year because turbulence around the pier affects navigation safety.It is of practical significance to study the pier turbulence width during water transportation and bridge construction.More work is needed on this topic in China.Based on the published literatures abo...