Based on the construction practice of steel cofferdam for pier base of main pier No.6 close to the pylon of Sutong Bridge, the key techniques for design and construction of the deep water double-wall steel cofferdams of the Bridge are described.

• 摘要以苏通大桥近塔墩主6号承台钢围堰工程实践为基础，介绍该桥深水双壁钢围堰设计、施工的关键技术。