Volume 40, Issue 7 (December 2012)

    Rutting Mechanism Analysis of Heavy-duty Asphalt Pavement Based on Pavement Survey, Finite Element Simulation, and Instrumentation

    (Received 13 May 2012; accepted 23 July 2012)

    Published Online: 2012

    CODEN: JTEOAD

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    Abstract

    The vertical strain of an asphalt layer is essentially important when identifying rutting mechanisms or causes in asphalt pavement with a semi-rigid base course, which is a typical pavement structure in China. As a result, three directional strain measurements (longitudinal, transverse, and vertical strain) in the field, together with a pavement rutting survey and finite element simulation, were carried out in order to clarify the causes of rutting happening in Beijing heavy-duty expressways. First, the basic principal of a fiber Bragg grating sensor is explained, followed by the introduction of sensor installation in the field. Then, a three-dimensional finite element pavement model subjected to a non-uniform moving load was established to validate the dynamic response measurement on site. Finally, based on a comprehensive analysis including a pavement condition survey, numerical simulation, and strain measurement, the rutting mechanism of heavy-duty asphalt pavement in Beijing is discussed. The results show that the occurrence of shear deformation within asphalt layers results in the rutting development, in which material weakness, modulus mismatch of asphalt layers, and heavy-duty characteristics play important roles. Optimizing asphalt layers’ moduli, i.e., making them match, might make pavement bear the applied loading with integrity, thus averting the occurrence of excessive local strain, i.e., rutting.


    Author Information:

    Dong, Zejiao
    Harbin Institute of Technology, Room B7319, School of Transportation Science & Engineering, Harbin Institute of Technology (Second Campus), Harbin,

    Key Laboratory of Road Structure & Materials, Xi’an,

    Tan, Yiqiu
    Harbin Institute of Technology, Room B7317, School of Transportation Science & Engineering, Harbin Institute of Technology (Second Campus), Harbin,

    Cao, Liping
    Harbin Institute of Technology, Room B7312, School of Transportation Science & Engineering, Harbin Institute of Technology (Second Campus), Harbin,

    Li, Shenglong
    Harbin Institute of Technology, Room B7321, School of Transportation Science & Engineering, Harbin Institute of Technology (Second Campus), Harbin,


    Stock #: JTE20120162

    ISSN: 0090-3973

    DOI: 10.1520/JTE20120162

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    Author
    Title Rutting Mechanism Analysis of Heavy-duty Asphalt Pavement Based on Pavement Survey, Finite Element Simulation, and Instrumentation
    Symposium , 0000-00-00
    Committee D04