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首页> 美国政府科技报告 >Validation on the Mechanical Models of Asphalt Pavement Structures with Field Measured Data Associated with Increasing Freight Movements.
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Validation on the Mechanical Models of Asphalt Pavement Structures with Field Measured Data Associated with Increasing Freight Movements.

机译：用增加货运量的现场实测数据验证沥青路面结构力学模型。

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This study is aimed at better understanding the effects of heavy trucks on the performance of asphalt pavements. As the U.S. freight movements are dominated by truck transportations, the addition of new roadway lane-miles in Region VII have not kept pace with the increase in truck volume. As such, existing highway pavements must be effectively preserved under heavy truck loads. The key to the success of infrastructure preservation is to accurately predict the behavior of pavement structures. To this end, it was necessary for the study to collect sufficient field performance data. The data were used to validate the Mechanistic Empirical Pavement Design Guide (MEPDG) and the finite element method (FEM), in terms of the impact of heavy truck loading on pavement performance. Actual roadway sections in Missouri were selected and monitored several times over the project period. Pavement performance-related data such as traffic information, asphalt material properties, and subgrade condition were collected and used for various analyses. The study provides insights into effective implementation of the MEPDG into the design and analysis of pavements in Region VII. The studys findings provide necessary information for the development of the next generation of a rigorously mechanics-based MEPDG. The outcome of the study led to better understanding of the pavement structure designs; which can result in long lasting transportation infrastructure and improve public safety.

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