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http://dx.doi.org/10.12652/Ksce.2015.35.4.0853

Finite Difference Modeling of a Piled Raft Foundation with Axisymmetry Condition and Interface Element  

You, Kwang Ho (The University of Suwon)
Kim, Hyung Ryul (The University of Suwon)
Bae, Sang Han (The University of Suwon)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.35, no.4, 2015 , pp. 853-861 More about this Journal
Abstract
In this study, FDM modelling with axisymmetry condition and interface element was verified whether it is reasonable to estimate compositive behavior of a piled raft foundation. To this end, the modelling validity of piled raft foundations was estimated by comparing and analyzing numerical analysis results and laboratory model test results. Also, load bearing ratio of a raft is analyzed by performing sensitivity analysis of foundation parameters with the actual field conditions. As a result of this study, correlation between bearing capacity and vertical displacement of numerical results turned out to be similar with that of a laboratory model test. In addition, ultimate bearing capacity of piled rafts and load bearing ratio of the raft is calculated to be similar in both cases. The load bearing ratio of the raft was also estimated to be in the range of 33% to 52% from the sensitivity analysis. The results were confirmed to be similar to the previous studies. Therefore, it can be inferred that piled rafts can be effectively modelled applying axisymmetry condition and interface element.
Keywords
Piled raft foundation; Load bearing ratio of raft; Finite difference analysis; Interface element; Axisymmetry condition;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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