EXPERIMENTAL STUDY AND THEORETICAL ANALYSIS ON BENDING CAPACITY OF NOVEL PRECAST BEAM-TO-COLUMN CONNECTIONS WITH REPLACEABLE ENERGY-DISSIPATION CONNECTOR

To realize the mechanical characteristic of controllable bending moment at beam end, a novel precast concrete beam-column connection with replaceable energy-dissipation connector (REDC) is proposed. Low-cycle quasi-static tests of the novel beam-column connection were carried out, focusing on the single-yielding mechanism and controllable bending moment. Based on the section analysis, the section stress-strain relationship of the novel beam-column connection was studied, and the key factors affecting the single-yielding mechanism and controllable bending moment were explored. Based on the analysis results, design suggestions of slot height were proposed. The results show that the novel beam-column connection has strong energy dissipation capacity and excellent reparability. The slot height between the beam and column interface has a directly impact on the single-yielding mechanism and the bending moment of the novel beam-column connection. The proposed design suggestions can achieve the design purpose of controllable bending moment at the beam end.