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9-1Šª
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1994”N
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955-960•Å
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PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM
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Takashi AKIYOSHI, Kunihiko FUCHIDA, Huolang FANG, Toshihiro TAMAKI, Masahiko KATO
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ANTI-LIQUEFACTION EFFECT OF IMPROVED GROUNDS BY SCP
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Critical and optimal parameters for anti-liquefaction design of ground improvement by sand compaction piles (SCP) are investigated. To perform this for a variety of grounds the two-dimensional finite element program NUW2 for dynamic effective stress analysis is developed based on the two-phase mixture theory of Biot and the strain space plasticity theory of soil, and used for the analysis of actual grounds and model grounds which are compacted by the SCP-execution program WAP3. The good performance of the numerical procedure used here is proved by a comparison of numerical and experimental results, and the optimal compaction to resist liquefaction is illustrated for model grounds.
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