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为准确计算柔性道面任一点累计损伤,考虑飞机载重和滑行速度差异,给出了飞机滑行在道面任一横断面处单个主起落架动荷载计算方法;基于单个主起落架动荷载作用下柔性道面面层底拉应变和土基顶面竖向压应变空间响应分析,引入多轴荷载作用频次影响系数,考虑轮迹横向偏移和纵向分布规律,得出了单个主起落架在道面任一位置处荷载作用频次的计算方法,并计算了相应位置处道面允许作用次数;基于Miner准则的线性疲劳累积损伤原理,提出了可覆盖整个柔性道面的道面累积损伤计算方法。实例表明该方法可行,可为道面分段和横向减薄设计的理论计算提供参考。
In order to accurately calculate the accumulated damage at any point of the flexible pavement, the calculation method of single main landing gear dynamic load is given considering the differences of the aircraft load and the taxi speed. Based on the single main landing gear dynamic load The results show that the single main landing gear in the road is the most important factor in the dynamic response of a single main landing gear. Based on the principle of linear fatigue cumulative damage by Miner criterion, a method to calculate the cumulative damage of pavement covering the entire flexible pavement is proposed. The examples show that this method is feasible and can provide references for the theoretical calculation of pavement segments and transverse thinning design.