APPLICATION OF WIB FOR BETTER SEISMIC PERFORMANCE OF BRIDGE FOUNDATION

1 Professor, Department of Environmental and Civil Engineering, University of Okayama Tsushima-Naka, 3-1-1, Okayama 700, Japan, e_quakes@cc.okayama-u.ac.jp 2 Ph.D. Candidate, Department of Environmental and Civil Engineering, University of Okayama Tsushima-Naka, 3-1-1, Okayama 700, Japan, dns14616@cc.okayama-u.ac.jp 3 Ph.D., Seismic and Environmental Engineering Department, Kozo Keikaku Engineering Chuo 4-5-3, Nakano-ku, Tokyo 164, Japan, shimabuku@kke.co.jp