（1浙江大学宁波理工学院，315100；2 浙江大学岩土工程研究所 杭州 310027）

［提要］采用振冲碎石桩法和充水预压法对某软土地区5×104m3油罐地基进行处理。基于沉降观测数据，分析了充水预压阶段油罐地基的沉降规律，并探讨了地基固结程度。根据使用三年后的罐基变形监测结果，分析了油罐地基的平面倾斜、非平面倾斜及罐基拱度特性。总结了该地基不均匀变形超过允许值的原因，并提出了相应的地基加固处理措施。

［关键词］油罐地基；充水预压；变形特性；不均匀变形；压密注浆

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