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PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM
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Yuji SAKO, Yuji MIYAMOTO, Atunobu FUKUOKA, Eiji KITAMURA, Shoji UCHIYAMA
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DYNAMIC INTERACTION OF SOIL AND COMPOSITE FOUNDATION
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A composite foundation has been employed in a high-rise building on a soft reclaimed soil. The composite foundation usually consists of a wall foundation with internal pile group and an exterior pile group. The behavior of buildings built on such foundations is greatly influenced by soil-foundation interaction during earthquake. In this paper, the dynamic characteristics of composite foundation is investigated by the forced vibration test and the analytical studies using axisymmetric finite element method. A simplified numerical model, which comprises a lumped mass model with dynamic interaction springs is verified by comparing with the test results.
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