Based on the analysis of the inadequacy of the lifting capacity of piling barge in large-diameter prestressed concrete pipe pile driving construction, the measure of applying buoyancy generated by cavity drainage to remedy the inadequacy is put forward.

• 摘要针对混凝土大直径管桩沉桩施工时打桩船吊装能力存在不足的问题进行了分析，提出了利用管桩空腔排水产生的浮托力来弥补的措施。