1. 1) Takemiya, H., Goda, K., Iida, T. and Nakazato, T.: Soil-Structure Interaction of Gravity-type Steel Offshore Structure for Earthquakes, Procs. of 5th Int. Symp. on Offshore Mechanics and Arctic Engineering, Vol. 1, Tokyo, pp. 663-670, April 1986.
2. 2) Takemiya, H.: Three-Dimensional Seismic Analysis for Soil-Foundation-Superstructure Based on Dynamic Substructure Method, Proc. of JSCE, Structural Eng./Earthquake Eng., Vol. 2, No. 1, pp. 139s-149s, April 1985.
3. 3) Takemiya, H.: Ring-Pile Analysis for a Group Pile Foundation Subjected to Base Motion, Proc. of JSCE, Structural Eng./Earthquake Eng., Vol. 3, No. 1, pp. 195s-202s, April, 1986.
4. 4) Penzien, J. and Tseng, S.: Three-dimensional Dynamic Analysis of Fixed Offshore Platforms, Ed. by O. C. Zienkiewicz et al., Numerical Methods in Offshore Engineering, John Wiley, Chapt. 7, 1978.
5. 5) Rock, T. and Hilton, E.: Free Vibration and Transient Response of Thick and Thin Plates Using the Finite Element Method, Int. J. of Earthquake Engineering and Structural Dynamics, Vol. 3, pp. 51-63, 1974.