ABSTRACT
Composite structures have increased their competitiveness under seismic loading due to the preeminent structural behavior by composite action. Y-type perfobond rib shear connector is suggested on the composite structures under cyclic loading conditions because of its high ductility and the prominent performance of energy dissipation. Experiment and numerical analysis have been performed to compare the shear strength and energy dissipation of the Y-type perfobond rib shear connectors with different number of ribs. In experiment, monotonic loading and cyclic loading are conducted to investigate the structural performance of Y-type shear connectors such as shear resistance under monotonic loading and energy dissipation under cyclic loading. Numerical analysis is performed to find the maximum shear resistance under monotonic loading which has a higher number of ribs. Additionally, Bouc-Wen-Baber and Noori hysteresis model is adopted to depict the hysteresis behavior of Y-type shear connectors. With the results of maximum shear resistance from numerical analysis and hysteresis model, the behavior of higher number of ribs can be predicted. Consequently, Y-type perfobond rib shear connectors can be suggested for seismic performance of composite structure to be improved.
