›› 2003, Vol. 24 ›› Issue (5): 771-775.

• Geotechnical Engineering • Previous Articles     Next Articles

Study on consolidation of supersoft ground of expressway with vacuum preloading method

CAO Yong-lang1, CONG Jian1, WU Xiao-feng2   

  1. 1. 南京水利科学研究院， 江苏 南京 210024；2. 中港一航局第四工程公司， 天津 300456
  • Received:2002-07-08 Online:2003-10-10 Published:2014-08-19

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Abstract: The vacuum preloading method is used to consolidate the supersoft ground of an expressway. The test indicated that the improvement effect is very obvious. Compared with the conventional preloading method, the project construction time can be decreased by a quarter; the settlement of roadbed reduces 1/3. The strength of soil increases by 1.5 times. The consolidation degree of soil is larger than 95 % after the embankment of height of 6.2 m was filled and vacuum preloading was constructed for 3 months. The displacement of foundation soil is smaller than 0.2 mm/d during the construction period; the embankment and ground soil are stable. The predicted settlement is less than 20 cm. The experience can also be used in similar engineering.

Key words: expressway, vacuum preloading, pore water pressure, strength, settlement, consolidation degree

CLC Number: 

  • TU 447
  • 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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