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《Chinese Journal of Underground Space and Engineering》 2008-05
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Field Testing Study on Strengthening Soft Soil by Vacuum-surcharge Preloading Method

GE Yan-hui1,2,LI Shu-cai1,CUI Wei3,LI Li-ping1,ZHANG Bo1,LIU Ren-tai1(1.The Research Center of Geotechnical Engineering,Shandong University,Jinan 250061,P.R.China;2.Shandong Jiaotong University,Department of Civil Engineering,Jinan 250023,P.R.China;3.School of Civil Engineering,Shandong University,Jinan 250061,P.R.China)  
In soft soil regions,settlement after work completion is the main problem to be solved urgently.Most section of the Shen-Su-Zhe-Wan highway in Huzhou,Zhejiang province is in soft soil areas and the vacuum-surcharge preloading method is applied to strengthen the soil.For a better guiding the construction and studying the strengthening mechanism,a test section is selected and an experiment scheme is established for the field testing study.Through the test,the data of the pore water pressure,settlement and horizontal displacement etc are obtained and the variation law of them is analyzed.Test result shows that the vacuum-surcharge preloading method is an appropriate method in getting rid of the settlement in the construction period and the stability of the subgrade is not affected by the filling velocity.
【CateGory Index】: TU472.33
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