›› 2012, Vol. 33 ›› Issue (6): 1829-1838.

• Numerical Analysis • Previous Articles     Next Articles

Spatial asymmetry of excess pore pressure during nonlinear consolidation with two-way drainage

DING Zhou-xiang，QIU Yu-liang，LI Tao   

  1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Received:2011-01-11 Online:2012-06-11 Published:2012-06-14

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Abstract: Based on fundamentals of continuum mechanics with Eulerian description method and the corresponding configuration transform relationship, a strict functional form on excess pore pressure (EPP) and void ratio during nonlinear consolidation of saturated soil is presented in this paper to study the development of EPP with a general meaning of nonlinearity. According to the analytical solution to linear finite-strain one-dimensional consolidation by Morris and the presented functional form, analytical solutions to EPP occurred with two-way drainage are put forward for normally consolidated and dead weight consolidated soils respectively. Thereafter, the asymmetry characteristics of EPP and the impact factors are investigated through a numerical orthogonal experiment. The results show that a dimensionless parameter N plays a dominant role in the spatial distribution behavior of EPP during nonlinear consolidation. For the case of non-zero N，the symmetry distribution of EPP in context of classic Terzaghi’s theory is not suited to nonlinear consolidation.

Key words: two-way drainage, nonlinear consolidation, excess pore pressure, asymmetry, analytical solution

CLC Number: 

  • TU 43
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