MAXIMUM RESPONSE EVALUATION OF BASE-ISOLATED BUILDINGS AGAINST PULSE-LIKE GROUND MOTIONS IN CASE OF COLLISION TO RETAINING WALL

Abstract

In this paper, we study the response characteristics and establish a method of evaluating the maximum response of base-isolated buildings when colliding with the retaining walls by pulse-like ground motions. As a result, the following conclusions are obtained.1)The force buildings subjected to varies by stiffness of retaining wall and building scale. 2)The period of collision is half of the natural period. 3)If the stiffness of retaining wall is high, ultimate natural frequency is determined by the lowest mass and stiffness of retaining wall. 4)Using prediction method we propose, the maximum response can easily be evaluated approximately.