摘要
AASHTO新力学经验法路面设计指南(MEPDG)的车辙预估模型具有较好的科学性与准确性,但其预估模型仅基于美国长期路面性能(LTPP)观测结果,其在中国的适用性仍有待进一步验证。基于规划求解原理,采用数理统计方法对陕西省某高速公路25条试验段的车辙实测数据进行分析,对MEPDG半刚性基层沥青路面车辙预估模型的参数进行校正,提出了考虑当地气候条件、交通荷载与参数校正的车辙预估校正模型,并分析了该模型的适用条件。研究结果表明:采用数理统计方法对多条试验路车辙数据的拟合,可大大提高MEPDG车辙预估模型的预测精度;基于规划求解原理得到的MEPDG车辙预估模型的陕西省校正系数,对陕西省类似路面结构的高速公路具有良好的适用性;建立的MEPDG车辙预估校正模型集参数输入与校正模型为一体,为MEPDG在陕西省乃至中国其他高速公路上的应用提供了参考。
The rutting prediction models in MEPDG have better science and accuracy. Since these prediction models were developed and calibrated based on test results of LTPP in North Ameri can, the feasibility of these models in China needs to be verified. Based on plan solution theory and adopting the method of mathematical statistics, the data from 25 field sections at an express way in Shaanxi province was analyzed and the parameters of rutting prediction models for semi rigid pavement were calibrated. Then the rutting prediction models which takes local climatic conditions, traffic loading and parameters calibration into consideration has been present. The re sults indicated that the calibrated HMA rutting model improved the rutting prediction accuracy; the calibrated factors based on plan solution theory has good applicability for pavements with similar structure in Shaanxi province; the established prediction model sets parameters input and cali bration model as a whole, which provide a reference for MEPDG method used in the other high way in Shaanxi province and even in China. 5 tabs, 5 figs, 18 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第6期1-7,共7页
Journal of Chang’an University(Natural Science Edition)
基金
国家自然科学基金项目(51178056)
