不等刃脚双壁钢围堰在水中承台施工中的应用

Application of Double Wall Steel Cofferdam with Unequal Blade Feet in Construction of Pile Cap in Water

针对州河铁路特大桥8#墩为深水基础,且所处河床面沿桥纵向坡度较大,常规施工方法无法完成施工的困局,应用了不等刃脚双壁钢围堰进行施工。不等刃脚双壁钢围堰能够有效地应对河床坡度的变化,并且有着水下爆破量小、结构用料省等其他围堰无法比拟的优势,在类似项目中有一定的应用优势。

Due to the deep water foundation of pier 8 of Zhouhe Railway super large bridge,and the large longitudinal slope of riverbed surface along the bridge,the construction can not be completed by conventional construction methods and the unequal blade foot double wall steel cofferdam is used for construction.The double wall steel cofferdam with unequal blade feet can effectively cope with the change of riverbed slope,and has the advantages of small underwater blasting amount,less structural materials and so on,which can not be compared with other cofferdams,so it has certain application advantages in similar projects.