Sinking construction technology for large steel cofferdam in strong tide river part

In strong tide river part, large steel cofferdam sinking construction is complex, and cannot foresight under strong tidal influence. Deviation is prone to occur in sinking process, and rectifying deviation is very hard to do, which will influence the follow-up cushion cap construction quality control to a certain extent. The sinking construction technology for bottomless double wall large steel cofferdam is introduced in the paper, which provides valuable experience for the sinking construction of similar projects in future.