动水压力对沥青混凝土路面的破坏研究

Study on Asphalt Concrete Pavement Destruction by Dynamic Hydraulic Pressure

通过对水膜微元体受力分析,得到动水压力的理论计算方法。动水压力实测的数据回归分析与理论推导解析解规律相同,动水压力值随行车速度的提高呈几何增长的趋势。揭示潮湿多雨地区高等级道路易发生水损坏的原因;指出动水压力作用致使沥青混凝土路面结构粘结力减弱,从而诱发水损坏。

Based on the force analysis of micro - unit, the formula of the dynamic hydraulic pressure was calculated. A regression analysis of the actual measured data gave the same pattern with the analytical solution from the theoretical deduction showing that the dynamic hydraulic pressure increased with the higher vehicle velocity. The reason that high ways were liable to water damage in wet - rainy regions was revealed. The dynamic hydraulic pressure leads to the cohesive force decrease in asphalt concrete pavements and the water damage.