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首页> 外文期刊>Advances in materials science and engineering >Calibration on MEPDG Low Temperature Cracking Model and Recommendation on Asphalt Pavement Structures in Seasonal Frozen Region of China
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Calibration on MEPDG Low Temperature Cracking Model and Recommendation on Asphalt Pavement Structures in Seasonal Frozen Region of China

机译：中国季节性冰冻地区MEPDG低温开裂模型的标定及沥青路面结构的推荐

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In order to implement the Mechanistic-Empirical Pavement Design Guide (MEPDG) to design and maintain asphalt pavements in China, it is necessary to calibrate transfer functions of distresses in MEPDG with local conditions, including traffics, environment, and materials as well as measured pavement distresses data in field. Comprehensive single factor sensitivity analyses of factors that influence thermal cracking of asphalt pavements were conducted utilizing the MEPDG low temperature cracking (LTC) model. Additionally, multiple factor sensitivity analyses were carried out as well, based on which pavement structures with sound thermal cracking resistance were recommended for seasonal frozen regions in China. Finally, the field data of thermal cracks on typical asphalt pavements in China was utilized to calibrate the LTC model in MEPDG. An improvement was proposed on MEPDG LTC model, after which was applied, the predicted thermal cracking from MEPDG LTC model agrees well with measured thermal cracking in China.
机译：为了在中国实施《机械-经验路面设计指南》（MEPDG）来设计和维护沥青路面，有必要根据当地情况（包括交通，环境和材料以及实测路面）校准MEPDG中的遇险传递函数。困扰现场数据。利用MEPDG低温开裂（LTC）模型对影响沥青路面热开裂的因素进行了综合的单因素敏感性分析。此外，还进行了多因素敏感性分析，在此基础上，建议在中国季节性冰冻地区使用具有良好抗热裂性的路面结构。最后，利用中国典型沥青路面热裂缝现场数据对MEPDG中的LTC模型进行了标定。提出了对MEPDG LTC模型的改进，然后应用该模型，根据MEPDG LTC模型预测的热裂纹与中国实测的热裂纹非常吻合。

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