Field Study of Oil Tank Foundation Stabilized by Stone Columns

Static loading plate tests, SPT, CPT and water preloading test of the oil tank foundation improved by stone columns’ were made in-situ. Studies of the results obtained shown as follows: ① Stone columns strengthen the resistance to seismic liquefaction of the saturated clayey silt foundation; ② Bearing capacity of the foundation was doubled; ③ Rate of consolidation of the foundation was accelerated, and the differential settlement of the oil tank decreased; ④ Initial excess pore water pressure in the foundation Was reduced.