基于养护规划需求的高速公路沥青路面结构荷载应力研究

Study on Load Stress of Highway Asphalt Pavement Structure Based on the Needs of Conservation Planning

针对广西某高速公路制定养护规划的需求,通过现场检测、室内试验、模量反算等方法确定了路面结构的实际参数,建立相应的路面结构力学模型,分析软弱夹层模量、上下水稳层层间状态等变化对路面结构层最大弯拉应力的影响。研究结果可用于估算路面剩余疲劳寿命,制定更加科学合理的养护策略。

According to the urgent needs of establishing highway maintenance planning in Guangxi, the actual parameters of pavement structure were decided using some methods such as field testing, laboratory test and modulus backcalculation. The pavement structure mechanical model was estab-lished according to the field test results. The influence of defect interlayer modulus and conditions be-tween upper-base and sub-base on pavement layer tensile stress was analyzed. The research results can be used to estimate the pavement residual fatigue life and formulate a more scientific and reasona-ble maintenance strategy.