随着贸易快速增长,港口吞吐量日益增加。部分高桩码头的轨道梁长期处于高负荷工作状态。由于循环荷载的作用,使得混凝土结构件产生疲劳损伤,表现为混凝土压碎或剥落。本文基于有限元对轨道梁进行动力分析,再结合疲劳损伤累积理论及S-N曲线对轨道梁进行疲劳寿命预测,为其运营维修提供依据。 With the rapid growth of trade, the port throughput is increasing day by day. Part of the high-pile pier track beam at high load for a long time working condition. Due to the effect of cyclic loading, fatigue damage to the concrete structure occurs, which is characterized by concrete crushing or peeling. In this paper, the dynamic analysis of the track beam is carried out based on the finite element method. Combined with the fatigue damage accumulation theory and the S-N curve, the fatigue life of the track beam is predicted, which provides the basis for its operation and maintenance.