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Determination of Optimum Stepped Vacuum Pressure and Settlement for IVPM-applied Ground
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 Title & Authors
Determination of Optimum Stepped Vacuum Pressure and Settlement for IVPM-applied Ground
Yoon, Myung-Seok; Ahn, Dong-Wook; Park, Jea-Man; Kim, Soo-Sam;
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Individual Vacuum Pressure Method (IVPM) is a soft ground improvement technique, in which a vacuum pressure can be directly applied to the vertical drain board to promote consolidation and to strengthen the soft ground. This method does not require surcharge loads, different to embankment or pre-loading method. In this study, the ground improvement efficiency of Individual Vacuum Pressure Method was estimated when suction pressure increases step by step(-20, -40, -60, -80kPa) with different periods. During Individual Vacuum Pressure Method process, surface settlement and pore pressure were monitored, and cone resistance as well as water content were also measured after the completion of Individual Vacuum Pressure Method treatment. From the results, optimum duration of each step of vacuum pressure was determined, and the settlement was calculated using FEM numerical analysis.
Individual Vacuum Pressure Method;Stepped vacuum pressure;Settlement;Numerical analysis;
 Cited by
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