根据南京三桥南塔处的水文、地质条件,南塔基础在多方案比较的基础上,推荐采用高桩承台的方案。针对水深流急的水文条件,为降低施工风险和施工难度,提出了以钢护筒和钢套箱等施工临时设施作为桩基础施工平台的基础施工方案,并进一步细化了结构方案设计,有效地保证了南京三桥的顺利施工。 According to the hydrological and geological conditions at the south tower of Nanjing Third Bridge, the basis of the Nanta Foundation is based on the comparison of multiple schemes and recommends the scheme of using high-pile caps. In order to reduce the risk of construction and the difficulty of construction, aiming at the hydrological conditions of deep water current and emergency, the paper puts forward the basic construction scheme of using temporary construction facilities such as steel casing and steel box casing as pile foundation construction platform, and further refine the structural scheme design, To ensure the smooth construction of Nanjing Bridge.