A Practical Consolidation Solution Based on the Time-Dependent Discharge Rate around PVDs

This study presents a practical consolidation solution for ground improvement used prefabricated vertical drains (PVDs) by incorporating the available time-dependent discharge rate around PVDs, which can be easily obtained by laboratory test and field monitoring. Only radial consolidation is taken into account in the derivation to significantly simplify the final expression as the vertical consolidation can be neglected in a typical soft ground improvement project. The proposed solution is verified by the finite element method (FEM) and two case histories, including vacuum preloading and surcharge loading. The verification results show that the proposed solution can predict the development of excess pore water pressure (EPWP) and the degree of consolidation (DOC) effectively and accurately. Design charts and framework are developed to assist geotechnical engineers in using this solution for field construction and performance prediction.


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  • Accession Number: 01706512
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 4 2019 3:04PM