According to the model of coupled vibration of vehicle andtracks, the dynamic loads of ballast of Shenzhen subway are calculated in both frequency and time domains. The relationship between dynamic loads and track irregularity wavelengths are obtained. The maximum dynamic load is about 80 kN/mm at the worst frequency, about 62 Hz.%根据车辆轨道模型，从频域和时域两方面分析了深圳地铁道床动载荷，得出了道床动载荷传递函数，根据传递函数找出了最不利波长，并参照铁路对短波不平顺管理标准，得到了道床最大动载荷。
展开▼
