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Prediction of Settlement of SCP Composite Ground using Genetic Algorithm  

박현일 (한국과학기술원 토목공학과 연수연구원)
김윤태 (부경대학교 해양공학)
이형주 (삼성건설 토목영업팀)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.16, no.2, 2004 , pp. 64-74 More about this Journal
Abstract
In order to accelerate the rate of consolidation settlement, to reduce settlement, and to increase bearing capacity for soft ground under quay wall, sand compaction pile method (SCP) has widely been applied. Improved ground is composite ground which is consisted of the sand pile-surrounding clayey soil. As caisson and upper structures are installed on SCP composite ground, the settlement is compositively occurred by elastic compression of sand compaction piles and also consolidation of the surrounding clay ground. In this study, the combined settlement model is proposed to predict the settlement of SCP composite ground in basis of elastic theory for sand compaction pile and consolidation theory for marine soft clay. Optimization technique was performed based on back-analysis so that real coded genetic algorithm was applied to estimate the parameters of the proposed settlement model. Case analysis was carried out for a domestic SCP composite ground to examine the applicability of the proposed prediction technique.
Keywords
SCP; settlement; genetic algorithms; consolidation;
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