关键词: 桥梁工程；超弹性合金；数值模拟；滞回曲线

Abstract: Super-elastic Alloys (SEA) are widely used in civil engineering because of its special super-elastic properties. In order to research the mechanical properties of concrete pier with built-in sea bar under cyclic load, the finite element model for bridge columns was established by finite element analysis software ABAQUS. The material constitutions of SEA rods and concrete were defined respectively by the built-in super elasticity and concrete damage plastic model of ABAQUS. In the modeling process, the hysteretic model of ordinary reinforcement was introduced, and the mechanical parameters of the pier, such as hysteretic curve, structural stiffness, yield stress and energy dissipation capacity were analyzed numerically. The numerical analysis results show that the finite element analysis can accurately simulate the stress state of high-performance materials under earthquake, which can be applied to the seismic analysis of high-performance materials and the design and improvement of corresponding structures.

Key words: bridge engineering; super-elastic alloys; numerical simulation; hysteretic curve