The paper takes the project as an example,and uses the method of taking the rate of filling sand as the parameter to design the vibro-squeezing sand pile for treating the foundation of liquefaction.

Based on the treatment practices of sandy soil foundation with vibro-compaction granular piles for the large oil tanks of Maoming Petrochemical Company in Maoming City,Guangdong Provinces,ome problems about the design of vibro-compaction granular piles are discussed.

Base on the geological condition,this paper analyzes some probably ground treatment methods,especially discusses pile form,pile length,bearing capacity and settlement of vibroflotation sand compaction pile.

Based on the analysis of the liquefied mechanism of saturated sand,this paper analyzes the effect of three measures such as compacted sand pile,vibro replacement gravel column and bag sand-well.

This paper comprehensively introduces the principle and the role of compacted sand pile in the reinforcement of the soft foundation based on the construction of the second contract section of Bao-Xi Railway,and describes the existing problems and their solutions.