Journal
GEOTEXTILES AND GEOMEMBRANES
Volume 47, Issue 2, Pages 243-254Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.geotexmem.2019.01.008
Keywords
Geosynthetics; Discharge capacity; Large-strain; PVD-Installed deposit; Radial consolidation; Soil disturbance
Funding
- National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [2018R1D1A1B07049360]
- Brain Korea 21 Plus (BK 21 Plus) initiative
- National Research Foundation of Korea [2018R1D1A1B07049360] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The radial consolidation rate of prefabricated vertical drain (PVD)-installed soft deposits is known to be closely related to the PVD discharge capacity, which usually decreases during consolidation. Conventional solutions for radial consolidation of PVD-installed deposits have been developed to consider discharge capacity reduction using small-strain theory, in which the volume compressibility coefficient and soil permeability were assumed to be constant. This paper formulates a general expression for discharge capacity reduction with time in numerical analysis based on large-strain theory. Soil disturbance effects caused by PVD installation, such as a nonlinear distribution for radial hydraulic conductivity, are captured in the proposed solution. The proposed solution was applied to field data from a test embankment at Saga Airport. The proposed solution provides a good result which is close to the measured data.
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