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July 5, 2026Geomechanics and Geoengineering

A nonlinear consolidation model for composite foundations with impervious piles and PVDs considering continuous drainage boundary

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Authors

JDJin DandanJiangsu UniversityHLHui LiHuanggang Normal UniversityCLC J LiNational Sun Yat-sen University

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Implication

Randomized trial demonstrates improved consolidation performance in composite foundations, suggesting effective design strategies.

Key Points

  • The research aims to develop a nonlinear consolidation model for composite foundations that considers drainage effects and soil behavior.
  • Developed three analytical models for flow patterns: outward, inward, and bidirectional flow.
  • Incorporated continuous drainage boundary, nonlinear soil behavior, and a time-dependent clogging function for PVDs.
  • Derived analytical solutions for both instantaneous and multi-stage loading situations.
  • Drain clogging critically influences pore pressure dissipation, leading to overestimated consolidation rates if neglected.
  • Non-ideal top drainage conditions can delay consolidation significantly.
  • The effect of radially dominant drainage on the ratio Cc/Ckh was shown to be more significant than that of Cc/Ckv.

Cite This Study

Dandan et al. (2026) studied this question.

synapsesocial.com/papers/6a49f464f5d1d45b287ffeedhttps://doi.org/10.1080/17486025.2026.2696286
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