Authors :
Salma Aulia Andari; Wiwik Rahayu
Volume/Issue :
Volume 7 - 2022, Issue 6 - June
Google Scholar :
https://bit.ly/3IIfn9N
Scribd :
https://bit.ly/3nRbiIp
DOI :
https://doi.org/10.5281/zenodo.6820415
Abstract :
Structures constructed above soft clay could
face problems due to its characteristics, where soft clay has
high compressibility, low permeability, and low shear
strength. One of the soil treatments for soft clay is using
prefabricated vertical drain (PVD) with vacuum, where
this combined method shortens drainage path and
increases consolidation rate. A finite element method
(FEM) study was conducted to see the long-term effect of
this method. Analysis was carried out on soil settlement,
lateral displacement and pore pressure changes during
construction and long after. The final result shows that a
rebound happened after the vacuum stopped, and was
continued by secondary settlement. Soil moved laterally
inward to the vacuumed area during treatment, and
moving outward slowly after the treatment is done. The
longer duration of vacuum affecting settlement and lateral
displacement increase.
Keywords :
Soft Clay; Prefabricated Vertical Drain, Vacuum Consolidation Method, Long Term Effect.
Structures constructed above soft clay could
face problems due to its characteristics, where soft clay has
high compressibility, low permeability, and low shear
strength. One of the soil treatments for soft clay is using
prefabricated vertical drain (PVD) with vacuum, where
this combined method shortens drainage path and
increases consolidation rate. A finite element method
(FEM) study was conducted to see the long-term effect of
this method. Analysis was carried out on soil settlement,
lateral displacement and pore pressure changes during
construction and long after. The final result shows that a
rebound happened after the vacuum stopped, and was
continued by secondary settlement. Soil moved laterally
inward to the vacuumed area during treatment, and
moving outward slowly after the treatment is done. The
longer duration of vacuum affecting settlement and lateral
displacement increase.
Keywords :
Soft Clay; Prefabricated Vertical Drain, Vacuum Consolidation Method, Long Term Effect.
