Abstract
Recently, the seismic performance of buildings with a hinge at the pile head has been investigated．It has been found that the hinge at the pile head has a considerable effect on the seismic performance of superstructures, depending on the hysteresis characteristics and ground conditions of the superstructures. This paper investigates how the hinge and pin planed at both pile head and middle of piles affect the responses of superstructures, in the viewpoint from the reduction of the response of the superstructures. As a result, their remarkable reduction effect on the response of superstructures is confirmed for such buildings as designed by Calculation of Lateral Load Carrying in the current building code.
