@ ŒfÚŽGŽi˜ajF “ú–{’nkHŠwƒVƒ“ƒ|ƒWƒEƒ€˜_•¶W VolF 9-1Šª ”NF 1994”N •ÅF 1165-1170•Å ’˜ŽÒi˜ajF ŽðŒü@—TŽiC@‹{–{@—TŽiC@•Ÿ‰ª@“ÄMC@Šì‘½‘º@‰pŽiC@“àŽR@³ŽŸ ƒ^ƒCƒgƒ‹i˜ajF ’n’†˜A‘±•Ç‚ÆY‚Ì•¡‡Šî‘b‚Ì“®“I‘ŠŒÝì—p ´˜^i˜ajF
- ƒL[ƒ[ƒhi˜ajF - ŒfÚŽGŽi‰pjF PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM ’˜ŽÒi‰pjF Yuji SAKO, Yuji MIYAMOTO, Atunobu FUKUOKA, Eiji KITAMURA, Shoji UCHIYAMA ƒ^ƒCƒgƒ‹i‰pjF DYNAMIC INTERACTION OF SOIL AND COMPOSITE FOUNDATION ´˜^i‰pjF
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. ƒL[ƒ[ƒhi‰pjF - ‹LŽ–‹æ•ªF - ‹æ•ª @@@ˆÏˆõ‰ï˜_•¶W