运用有限元软件ABAQUS建立了圆柱桥墩非线性有限元模型,采用循环往复加载的Pushover方法模拟圆柱桥墩包括保护层及核心区混凝土、箍筋和钢筋的破坏过程,研究轴压比对圆柱桥墩延性破坏的影响。研究表明,核心区混凝土的破坏时间随着轴压比的增大而缩短;轴压比的变化对圆柱桥墩的保护层混凝土、纵筋首次屈服时间的影响无明显规律可循;一定范围内,位移延性系数随轴压比的增大而减小,表明适当的轴压比能够提高桥墩的抗倒塌能力;圆柱墩的滞回耗能能力也随轴压比的增大而减小。 The nonlinear finite element model of the bridge piers is established by the finite element software ABAQUS. The failure process of the concrete piers, stirrups and steel bars in the pier and the core area are simulated by the pushover method of cyclic reciprocating loading. The influence of the axial compression ratio on the ductile failure of the cylindrical pier Impact. The results show that the failure time of concrete in core area shortens with the increase of axial compression ratio. The change of axial compression ratio has no obvious effect on the first yield time of protective layer concrete and longitudinal reinforcement of cylindrical piers. Within a certain range, Displacement ductility coefficient decreases with the increase of axial compression ratio, which shows that proper axial compression ratio can improve the anti-collapse ability of piers. Hysteresis energy dissipation of cylindrical piers also decreases with the increase of axial compression ratio.