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《Journal of Jiangsu University of Science and Technology(Natural Science Edition)》 2006-01
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Field Experiment and Improvement Principle of Vacuum Combined Surcharge Preloading Method

PENG Jie(Geotechnical Research Institute,Hohai University,Nanjing Jiangsu 210098,China)  
Field experiment and research work were carried out in the Hang Jin Qu highway engineering.Results show that the vacuum preloading can cause more settlement velocity and more horizontal displacement into the foundation.Thereby,the improved foundation by the vacuum combined preloading is stabler than that by the surcharge preloading.The effective improveing depth is in the scape of PVD,and the effective depth of vacuum combined surcharge preloading is determined by the stress of surcharge.The effective improving depth of vacuum preloading is about 18m under the surface.The water table of underground water is descended with vacuum preloading,and the descend range is less than 2m in this research.
【Fund】: 国家自然科学基金资助项目(50379010)
【CateGory Index】: TU472.3
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