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（1浙江大學(xué)寧波理工學(xué)院，315100；2 浙江大學(xué)巖土工程研究所 杭州 310027）

［提要］采用振沖碎石樁法和充水預(yù)壓法對(duì)某軟土地區(qū)5×104m3油罐地基進(jìn)行處理?；诔两涤^測(cè)數(shù)據(jù)，分析了充水預(yù)壓階段油罐地基的沉降規(guī)律，并探討了地基固結(jié)程度。根據(jù)使用三年后的罐基變形監(jiān)測(cè)結(jié)果，分析了油罐地基的平面傾斜、非平面傾斜及罐基拱度特性。總結(jié)了該地基不均勻變形超過(guò)允許值的原因，并提出了相應(yīng)的地基加固處理措施。

［關(guān)鍵詞］油罐地基；充水預(yù)壓；變形特性；不均勻變形；壓密注漿

Study on Deformation Properties of Soil Foundation Under a Large Oil Tank/Wang Wenjun1，Zhu Xiangrong1,2（1 Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China; 2 Research Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China）

Abstract:Stone columns and water filling preload methods are applied to improve the 50 000m3 oil tank foundation on soft soil. Based on the testing settlement data during filling preload, settlement properties and consolidation degree of stone improved composite foundation of the oil tank are discussed. According to the testing data after three years, the plane inclination, non-plane inclination and arch degree of the oil tank foundation are analyzed. Finally, unsuccessful factors of foundation treatment are generalized, and the corresponding reinforcement measures are proposed.

Keywords:oil tank foundation; water filling preload; non-homogeneous settlement; deformation property; compacted injection