Abstract
Deep mixed columns often penetrate partially into the soft soil as floating columns due to the depth of the end-bearing layer. Partially penetrated soft soil by columns and the underlying compressible soft soil create a double-layered compressible foundation. So far, no reasonable solution is available to estimate the consolidation of such a double-layered foundation. This paper proposes an analytical solution for consolidation of a double-layered compressible foundation partially penetrated by deep mixed columns considering one-side or two-side vertical drainage The Laplace transform method was used to solve the consolidation equation for the double-layered system while Stehfest's algorithm was used to solve the inverse Laplace transform for time-dependent loading. A consolidation algorithm was used to calculate the time-settlement relationship of an embankment constructed upon the double-layered foundation partially penetrated by deep mixed columns. The calculated settlements were compared well with field measurements.
Original language | English (US) |
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Pages (from-to) | 1210-1214 |
Number of pages | 5 |
Journal | Journal of Geotechnical and Geoenvironmental Engineering |
Volume | 134 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2008 |
Keywords
- Clays
- Columns
- Consolidation
- Foundations
- Soft soils
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- General Environmental Science