Experimental Seismic Performance of Self-Adapting Energy Dissipation UPPC Frame

Abstract

Our research team put forward a self-adapting energy dissipation unbonded partially prestressed concrete (UPPC) frame structural system, which is a new UPPC frame structure with good deformability and energy dissipation capacity. This new structure refers to the rational setting of self-adapting energy dissipation components in the UPPC frame, which aims at reducing the stress of unbonded prestressed reinforcement during severe earthquakes. Besides, part of the prestress in the beam during that period can be released to form a beam-hinge energy dissipation mechanism and strong column-weak beam ductility frame. In this paper, the experimental study of two frames (UPPC frame and self-adapting energy dissipation UPPC frame) under low cyclic loading demonstrates that the self-adapting energy dissipation UPPC frame of this experiment presents a better energy dissipation capacity, and thus can form a beam-hinge mechanism.