Centrifuge model test on dynamic behavior of group-pile foundation With inclined piles and its numerical simulation |
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Authors: | Feng ZHANG Katsunori OKAWA Makoto KIMURA |
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Affiliation: | (1) Department of Civil Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;(2) Mitsubishi Heavy Industry Co. Ltd., Wadasaki-cho, Hyogo-ku, Kobe 652-8585, Japan;(3) Department of Civil Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan |
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Abstract: | In this paper, dynamic behavior of a grouppile foundation with inclined piles in loose sand has been investigated with centrifuge
model tests. The test results are also simulated with elastoplastic dynamic finite element method, in which, not only sectional
force of piles, stress of ground, but also deformation of piles are calculated using a three-dimensional elastoplastic dynamic
finite element analysis (Code name: DGPILE-3D). The numerical analyses are conducted with a full system in which a superstructure,
a pile foundation and surrounding ground are considered together so that interaction between pile foundation and soils can
be properly simulated because the nonlinearities of both the pile and the ground are described with suitable constitutive
models. Different types of piles, vertical pile or inclined pile, are considered in order to verify the different characteristics
of a group pile foundation with inclined piles. The validity of the calculation is verified by the model tests. |
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Keywords: | centrifuge model test dynamic analysis group-pile foundation inclined pile interaction of soil and pile |
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