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Study on Bond-Slip Behavior of the Channel Steel Connectors at the End of Novel Prefabricated Prestressed Concrete Beams

The channel steel connectors of novel prefabricated prestressed concrete beam play an extremely important role in structures. They act as the connectors of prefabricated beams and columns and support the prefabricated beams temporarily at construction stage, work as shear connectors of the adjoining faces between the old and new concrete at using stage. But they are easy to be bond slip failure for its complicated stress states. To analyze their mechanical behavior and failure mode, the interaction between concrete and channel steels is considered by adopting the spring unit and nonlinear analysis with finite element software ANSYS. The results indicate that the channel steel connectors of novel prefabricated prestressed concrete beam are effective in bearing various loading effects and meet the requirements of prefabricated structures.