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A Numerical Study on the Effects on Consolidation Settlement Behavior due to Uncertainty of Compression Index  

Byun, Yoseph (한양대학교 대학원 건설환경공학과)
Kim, Kwangyoon (SK건설(주) 서울지하철 9호선 3단계 918공구 건설공사)
Lee, Changki (한양대학교 대학원 건설환경공학과)
Chun, Byungsik (한양대학교 공과대학 건설환경공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.13, no.11, 2012 , pp. 43-50 More about this Journal
Abstract
In this research, the value of consolidation index was investigated. The range of the investigated standard deviation was analyzed and the deviation based settlement was calculated. Also, the compression index, which is the effect of the uncertainty in the ground was analyzed using the flimsy ground construction method. The settlement behavior in each embankment compaction stage was analyzed by applying the precompression load method, drainage expediting method, and displacement method through numerical analysis. In addition to the above, the settlement behavior was studied by analyzing the Piled Raft method which is stable for long term settlement. As a result, the final settlement amount based on average analysis results was that the settlement based on each of the average interpretation value, mean value of the maximum and minimum value and average compression index was different. The result of the comparison shows the difference in variation coefficient by the difference in time. Amongst them, the Piled Raft method shows the most consistent variation coefficient regardless of time and it also was least affected by the compression index of uncertainty.
Keywords
Preloading; PBD; SCP; Piled Raft; Compression Index; Coefficient of Variation;
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