半刚性基层沥青路面的破损原因和改进措施

该文通过对海宁市东西大道沥青路面病害情况的调查,分析造成半刚性基层沥青路面基层疲劳破坏的主要原因。据此提出了防止路面破损的改进措施;设计阶段调查交通量时,要充分考虑转移交通量和超载因素,并且有余地;面层应采用抗车辙、抗浸水的改性沥青和SMA混合料;半刚性基层上最好铺一层土工合成材料。

Failure Causes and Improvement Measures of Asphalt Pavement with Semi-rigid Base

Based on investigation of the failure conditions for asphalt pavement of Dongxi Rd in Haining, the analysis shows that the fatigue failure of semi-rigid base asphalt pavement is mainly due to the heavy and fast increasing traffic volumes, and the seriously overloaded trucks. And improvement measures for pavement failure prevention are proposed: in the investigation of traffic volume in design stage, the transition traffic volume and overloading factor should be fully considered; rut-preventing and immersion-preventing modified asphalt and SMA mix should be used for pavement surface; a geotextile had better be paved on semi-rigid base.