›› 2005, Vol. 26 ›› Issue (S1): 95-98.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on laboratory test of vacuum and surcharge preloading

WU Gui-fen1,2, GAO Yu-feng1, WEI Dai-xian3, LIU Han-long1   

  1. 1.Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China; 2. Guangxi Electric Power Investigation, Design and Research Institute, Nanning 530023, China; 3. Shandong Provincial Linyi Administration Bureau of Bank and Reservoir, Linyi 276001, China
  • Received:2005-01-21 Published:2005-12-15

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Abstract: By modeling vacuum preloading and surcharge preloading in different depths of the soil using the laboratory test; then soil properties before and after test, axial settlements, volume changes of two methods are analyzed. And some useful conclusions are drawn; soil properties are improved and penetrability after vacuum preloading is better than the one after surcharge preloading, while compressibility after surcharge preloading is better than the one after vacuum preloading. Settlement after surcharge preloading is much bigger than the one after vacuum preloading, and it is constringed more slowly than the one of vacuum preloading. Volume change after vacuum preloading is 1.8 times more than the one after surcharge preloading, and volume change of shallow soil is more than the one of deep soil after vacuum and surcharge preloading.

Key words: laboratory test, vacuum preloading, surcharge preloading, strengthening result, settlement, volume change, lateral deformation

CLC Number: 

  • TU 454
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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