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http://dx.doi.org/10.7843/kgs.2018.34.8.15

2D Numerical Simulation of a Dynamic Centrifuge Test for a Pile-Supported Structure  

Chanh, Pham Viet (Dept. of Civil Eng., Dong-A Univ.)
Tran, Nghiem Xuan (Dept. of Civil and Environmental Eng., Seoul National Univ.)
Kim, Sung-Ryul (Dept. of Civil and Environmental Eng., Seoul National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.34, no.8, 2018 , pp. 15-26 More about this Journal
Abstract
Recently, as the seismic performance based design methods have been introduced, dynamic numerical analyses need to be performed to evaluate the actual performance of structures under earthquakes. The verification of the numerical modeling is the most important for the performance based design. Therefore, 2-dimensional numerical analyses were performed to simulate the seismic behavior of a pile-supported structure, to provide the proper numerical modeling and to determine of input parameters. A dynamic centrifuge test of a pile group in dry loose sand was simulated to verify the applicability of the numerical model. The numerical modeling was carefully made to reflect the actual condition of the centrifuge test including dynamic soil properties, soil-pile interaction, boundary condition, the modeling of the group pile and structure and so on. The predicted behavior of the numerical analyses successfully simulated the acceleration variation in ground, the moment and displacement of the pile, and the displacement and acceleration of the structure. Therefore, the adopted numerical modeling and the input parameters can be used to evaluate the seismic performance of pile groups.
Keywords
Soil-pile interaction; Numerical simulation; Centrifuge test; Group pile; Earthquake;
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Times Cited By KSCI : 1  (Citation Analysis)
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