Moving loads identification is one of the important measures for health monitoring of bridge because the cyclicaction of moving loads may lead to fatigue damage or even failure of the bridge.
移动车辆荷载反复作用会导致桥梁疲劳损伤甚至破坏，移动荷载识别是桥梁健康监测的重要措施之一。
2
Second, it is a kind of cyclic utilization and it is a friendly-environmental action.
第二，这算是循环利用的一种了，也属于营造友好环境的行动。
3
Corrosion fatigue. A type of failure that results from the simultaneous action of a cyclic stress and chemical attack.