EXPERIMENTAL STUDY OF SEISMIC RESPONSE UNDER KINEMATIC AND INERTIAL INTERACTIONS OF RIGID FRAME VIADUCT ON BATTER PILES

It is confirmed that battered pile foundation viaduct has damping effects due to the reverse rocking movement and input loss by ground deformation in addition to the static rigidity increasing effect. However, the damping effects can not be evaluated quantitatively until now. In this study, we conducted vibration tests using the rigid frame viaduct models (about 1/10 scale) with vertical and battered piles (the angle is 5 degrees). As the results, aseismicity of the viaduct for the horizontal acceleration can be improved by using batter pile in all frequency ranges. And the earthquake resistance improvement of the batter pile viaduct by the effects of reverse rocking movement and input loss can be quantitatively obtained through numerical analysis.