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A Finite Element Analysis of Stress Change in Pavement Subjected to Freeze-Thaw

Conference paper

Abstract

The prediction of stress change in pavement structure is quite essential for the design, construction, and maintenance of pavement in the seasonal cold region. Much attention is concentrated on the change of elastic modulus of soils due to freezing and thawing. To overcome the limitation of conventional design method, in which the elastic modulus of materials needs to be assigned manually to various thermal state layer by layer, a comprehensive analysis method is proposed in this study. This analysis can specify temperature-dependent modulus, and a typical pavement in the cold region was selected and simulated. It is revealed that snow cover on footpath can affect the thermal pattern in the pavement, which leads to differential frost penetration along the cross-section of the pavement. The stress change induced by frost action of soil shows the reverse trend between frozen and unfrozen (thawed) layers. The stress increment in subgrade during spring season should be accounted properly.

Keywords

Stress change Freezing and thawing Flexible pavement 

Notes

Acknowledgments

This research was supported in part by Grant-in-Aids for Scientific Research (A) (16H02360) from Japan Society for the Promotion of Science (JSPS) KAKENHI. The support from the China Scholarship Council (CSC) is also greatly acknowledged.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Hokkaido UniversitySapporoJapan
  2. 2.National Institute of Technology, Tomakomai CollegeTomakomaiJapan

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