武汉军山长江公路大桥主塔墩钢围堰巧妙地将圆形和异形结构结合在一起 ,以满足不同施工时期的需要。最大抽水状态时为圆形结构 ,充分发挥了圆形结构受力好的特点 ;低水位时由圆形变成异形 ,以适应下塔柱施工的需要。实践证明本桥异型钢围堰的设计是成功的 ,为今后特大型异型钢围堰设计提供了新的设计思路和方法 Wuhan Junshan Yangtze River Bridge main tower pier steel cofferdam skillfully combined circular and shaped structure to meet the needs of different construction periods. The maximum pumping state is a circular structure, give full play to the circular structure of the force characteristics; low water level from the circular into a special shape to meet the needs of the construction of the next tower. Practice has proved that the design of this special-shaped steel cofferdam is successful, providing a new design method and method for the design of super-large shaped cofferdam in the future