Experimental on the protective performance of column bridge pier anti-scouring device

Because of the problem local scour caused by change flow structure water-resistance column bridge pier, theoretical analysis, and indoor water tank test were used to study effect installing a new anti-scouring device in front pier on reduction effect; influence main design parameters such as height protective device, angle distance from was selected, optimal parameter combination selected. The results show that: under same conditions, maximum depth rate measuring point protection is 48.4% 74.2% compared with unprotected scour; relative equivalent. between are related, shock decreases increase intensity. In range, ratio 2/3, 60 °, 3. When diameter doubled, reducing impact best.