Journal Published Online: 26 November 2012
Volume 40, Issue 7

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

CODEN: JTEVAB

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, CN
Cai, Yang
Key Laboratory of Road and Traffic Engineering, Tongji Univ., Shanghai, CN ShangHai Urban Construction Design & Research Institute, Shanghai, CN
Li, Shuming
Key Laboratory of Road and Traffic Engineering, Tongji Univ., Shanghai, CN
Pages: 4
Price: $25.00
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Details
Stock #: JTE20120129
ISSN: 0090-3973
DOI: 10.1520/JTE20120129