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WANG Chi, HUANG Ming, ZHU Jun-gao, XIA Guo-xing, LIN Fei. Nonlinear analysis of composite ground with weak drainage pile[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 476-480.
Citation: WANG Chi, HUANG Ming, ZHU Jun-gao, XIA Guo-xing, LIN Fei. Nonlinear analysis of composite ground with weak drainage pile[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 476-480.

Nonlinear analysis of composite ground with weak drainage pile

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  • Received Date: April 25, 2011
  • Published Date: November 30, 2011
  • Under a constant load, considering the influences of smear zone and nonlinear characteristics of soil, assuming that there is only radial flow in weak drainage piles, a governing equation under the assumption of equal strain is derived. The validity of the proposed method is conformed through being equivalent to Terzaghi’s one-dimensional consolidation theory . The analytic results show that: the nonlinear characteristics of soil have great i nfluences on the rate of consolidation , the consolidation velocity of composite ground decreases with the increase of C c / Ck and H / rc , the stress ratio σ0/ σsi has less influences on the rate of consolidation in comparison with Cc/ Ck, the larger the ratio of pile-soil modulus, the faster the consolidation velocity and the less influences of C c / Ck on consolidation, and the consolidation velocity of composite ground with weak drainage pile is mainly under the influences of anisotropy of permeability of soil.
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