Author(s)

H Otsuka, S. Kunki, J.G.Park, Y Suzuki and T. Tsuchida

Abstract

The purpose of this paper is to investigate dynamic characteristics of a base isolated bridge for transverse direction and to study the effectiveness of base isolation. This bridge is rigid frame with double deck and its center of gravity is relatively high compared to its pier distance in transverse direction. It indicates that tensile reaction would occur at the isolator during strong earthquake. As a result of 3-dimensional time history analysis of a non-isolated bridge, this kind of bridge is unstable for an overturning in the transverse direction and must be prepared for overturning. But according to the survey of the suitable characteristics of the isolator, tens

Keywords