SEISMIC PERFORMANCE EXPERIMENTAL RESEARCH ON STEEL AND POLYPROPYLENE FIBER REINFORCED SPECIAL-SHAPED COLUMN EDGE NODE

Under the low cyclic loading，4 steel and polypropylene fiber reiforced special-shaped column edge nodes were tested，and the bearing capacity，displacement ductility，the restoring force characteristics of each node were analyzed，including hysteresis curves，energy dissipation and stiffness degradation curve，it was compared seismic indicators of steel framed reinforced edge node，fiber reinforced edge node and ordinary node． The research shows that the steel and polypropylene fiber reinforcement can all improve the shear crack form，increase the cracking load and deformation ability of the nodes，delay node rigidity degradation in later stage，especially in the deformation capacity，steel reinforced node has a more obvious superiority．