Seismic Behavior of Box Steel Bridge Pier with Built-In Energy Dissipation Steel Plates

Based on the design concept of earthquake-resilient structure, a new-type box-shaped steel piers with embedded energy-dissipating plates was proposed. Quasi-static tests 6 pier specimens under variable axial pressure and cyclic horizontal loading were carried out. By analyzing failure mode, load-displacement hysteretic curve, skeleton displacement ductility coefficient, stiffness degradation characteristics, strength cumulative energy, effects setting plate, compression ratio, thickness energy dissipation seismic performance discussed. Finite element models bridge established compared test results. The analysis results using FEM agree well Results show that can effectively improve ductility, deformation capacity, capacity piers, delay buckling cracking wall plates. plate near bolt hole at root is easy to crack due stress concentration, resulting in rapid reduction maximum bearing specimens. With increase increase. smaller replaceable plates, faster become, while are improved. ratio have relatively little effect In order facilitate popularization application formulas also calculate factor piers.