Seismic Behavior Evaluation of a Structure Equipped with Sliding Base

Abstract

An experimental study was conducted to evaluate the seismic behavior of a structure equipped with a movable sliding base using cast iron and mortar at the interface The preliminary friction test indicated that the graphite layer developed in the friction interface could effectively lubricate the surface after several cyclic slides and made the coefficient of friction between the interface to be 0 30 to 0 36 when applying corresponding normal compression stress 2 6 to 5 2 MPa Normal compressive stress show little effect on the coefficient of friction The shaking table tests on a free-standing frame was conducted by using the same material properties clarified in the preliminary test which showed not only slide but also rock rock-slide responses under large excitation However the sliding base showed a reduction of horizontal acceleration and story drift ratio comparing to the fixed specimen even collisions may fluctuate the resistance of base shear Comparing the dynamic behavior of the same intensity inputs the overall dynamic behavior and structural responses of the structure tended to be more severe under the shaking after the base was broken which was caused by the collisions

Date of Award	2019
Original language	English
Supervisor	Yu-Lin Chung (Supervisor)