Volume 40, Issue 7 (December 2012)

    Interrelationship between Tire Contact Stress and Longitudinal Construction Joint Layout in Pavement

    (Received 7 May 2012; accepted 17 July 2012)

    Published Online: 2012

    CODEN: JTEOAD

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    Abstract

    In reconstruction and rehabilitation expressway projects, there are a series of longitudinal construction joints between old and new semi-rigid bases. As the weak parts in the whole structure, the longitudinal construction joints have a trend to damage earlier than other parts. In this paper, based on a highway project, the finite element method was used to analyze the effect of longitudinal construction joint layout and bond conditions on mechanical response of semi-rigid base pavement under normal loading and heavy loading. Analysis results showed that maximum stress under heavy loading of 50 % larger than normal loading would increase 20 %. Bond condition was another significantly important factor. Under heavy loading, the bond between old parts and new parts need higher adhesion strength. The longitudinal construction joints should be set as far as possible away from the wheelpath. If its position was 50 cm away from the load, maximum stress in the structure will decrease more than 25 %.


    Author Information:

    Xu, Yifeng
    ShangHai Urban Construction Design & Research Institute, Shanghai,

    Cai, Yang
    Key Laboratory of Road and Traffic Engineering, Tongji Univ., Shanghai,

    ShangHai Urban Construction Design & Research Institute, Shanghai,

    Li, Shuming
    Key Laboratory of Road and Traffic Engineering, Tongji Univ., Shanghai,


    Stock #: JTE20120129

    ISSN: 0090-3973

    DOI: 10.1520/JTE20120129

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    Author
    Title Interrelationship between Tire Contact Stress and Longitudinal Construction Joint Layout in Pavement
    Symposium , 0000-00-00
    Committee D04