基于弯沉的沥青路面使用性能评价模型

An Asphalt Pavement Performance Evaluation Model Based on Deflection

为了研究弯沉在沥青路面使用性能综合评价中所占权重,将改进的层次分析法得到的主观弯沉权重和熵值法得到的客观弯沉权重利用变权原理结合起来,建立基于弯沉指标的沥青路面使用性能评价模型。通过高速弯沉仪的引进和路面长期性能观测两种实现手段,使得新路面使用性能评价模型的应用得到了保证。实例表明:新模型评价结果能体现现有规范中沥青路面使用性能各指标权重比例和沥青路面实时参数演变规律,能更客观、更准确地体现路面质量的实际状况。

In order to research on deflection weight in the asphalt pavement performance comprehensive evaluation,combining the subject deflection weight obtained from improved analytic hierarchy process with the objective deflection weight obtained from entropy method using the variable weight principle,the asphalt pavement performance evaluation model based on deflection is established. Depending on 2 means of implementation including the introduction of high speed deflectometer and observation of long-term pavement performance,the application of the new pavement performance evaluation model is guaranteed. The example shows that the evaluation result of the new model can reflect each index weight proportion of asphalt pavement performance in the existing specification and the real-time parameter evolution rule of asphalt pavement,it can reflect the actual condition of pavement quality more objectively and accurately.