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http://dx.doi.org/10.12652/Ksce.2010.30.5C.201

Characteristics of Vacuum Consolidation by Comparing with Surcharge Loading Consolidation  

Sim, Dong-Hyun (현대건설(주) 기술개발원)
Lee, Jae-Hwan (연세대학교 공과대학 토목공학과)
Jeong, Sang-Seom (연세대학교 공과대학 토목공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.30, no.5C, 2010 , pp. 201-208 More about this Journal
Abstract
In this study, the ground settlement was investigated by using monitoring data of the test sites where vacuum consolidation method and surcharge method were applied for improving deep soft soil. The monitoring data are chosen in ${\bigcirc}{\bigcirc}$ area port construction site reclaimed with very soft dredged clay. These data are analyzed to compare the consolidation characteristics between the different loading methods for soil improvement. Through analysis of the loading time, it is shown that the ground settlement reaches its allowable value under vacuum consolidation loading by about 45% faster than that of the surcharge loading consolidation. This could be explained that vacuum consolidation method makes the isotropic consolidation condition so that the time for reaching a certain final preloading without soil failure can be shortened.
Keywords
surcharge consolidation method; vacuum consolidation method; isotropic consolidation;
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