The bridge connection and landing project of Daxiaoyu hill reclamation project in Daishan County,Zhoushan City adopts sloping breakwater structure,and the foundation treatment adopts two types:plastic drainage board and vibrating sinking-pipe macadam pile,among which,vibrating sinking-pipe macadam piles are all constructed on the sea,which is the longest vibrating sunken pipe gravel pile applied to the domestic port and waterway engineering up to now.A set of key technologies for the gravel piles construction involving the marine vibro- pipe-sinking installation is established against the technical difficulties previously faced during construction by making necessary modifications on the pile-driving barges,optimizing the pile layout,working out a set of effective quality assurance measures and monitoring measures for gravel delivery,effectively solving a series of difficulties such as low equipment operational efficiency,slow positioning,poor positioning precision,non-sinking gravels,insufficient grouting,and poor compactness.