›› 2010, Vol. 31 ›› Issue (S1): 79-85.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Axisymmetric analytical solution of vacuum preload considering the loading process

PENG Jie 1, 2，DONG Jiang-ping3，SONG En-run 1, 2，HONG Lei 1, 2   

  1. 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098; 2. Geotechnical Research Institute, Hohai University, Nanjing 210098; 3. Sdc Waterway Construction Co., Ltd., Ningbo, Zhejiang 315200, China
  • Received:2010-04-22 Online:2010-08-10 Published:2010-09-09

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Abstract:

On the basis of axisymmetric equal strain equation of sand drain foundation,the axisymmetric analytical solution of the pore water pressure and consolidation degree under vacuum preloading were derived in this paper. The effect of vacuum loading speed was considered by the function, which was used to simulate the initial condition of surface pore water pressure,and resolved the contradiction of pore water pressure boundary condition and initial condition at the surface.Well resistance and smear were also considered in the analytical solution.With the other answers as well as the numerical solution,the analytical solution has been verified through an example calculation, and ti can be further applied in practical engineering design.

Key words: sand drain foundation, vacuum preload, axisymmetric analytical solution, pore water pressure, consolidation degree

CLC Number: 

  • TU 441
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