Study on Seismic Performances of Hybrid Precast Concrete Beam-to-column Connections

An experimental study on seismic performances of six hybrid precast beam-to-column concrete connections subject to reversed cyclic loading was conducted.The study includes failure pattern,hysteresis characteristics,displacement-restoring capacity,displacement ductility,and energy dissipation.The objective of the study is to present a kind of precast frame structure that is suitable for regions of high seismicity and to develop guidelines for the structure design.The study results show that the energy-dissipating capacity of the hybrid connection is almost equal to that of the monolithic connection,while the displacement ductility and displacement-restoring capacity of the hybrid connection is superior to that of the monolithic connection,and the overall seismic performance of the hybrid connections is superior to that of the monolithic connection.