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Pavement design method in Japan with consideration of climate effect and principal stress axis rotation

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Title: Pavement design method in Japan with consideration of climate effect and principal stress axis rotation
Authors: Lin, Tianshu Browse this author
Ishikawa, Tatsuya Browse this author →KAKEN DB
Maruyama, Kimio Browse this author
Tokoro, Tetsuya Browse this author
Keywords: Rutting
Fatigue cracking
Freeze-thaw action
Resilient modulus
Mechanical-empirical design method
Issue Date: May-2021
Publisher: Elsevier
Journal Title: Transportation geotechnics
Volume: 28
Start Page: 100552
Publisher DOI: 10.1016/j.trgeo.2021.100552
Abstract: Current Japanese design guide uses mechanical-empirical criteria to predict the failure loading number against fatigue cracking and rutting. However, these criteria have some limitations that the variation in moduli of base and subgrade layer due to the fluctuation in water contents, freeze-thaw history, and stress states are not considered. As well known, these factors greatly affect the soil mechanical properties like resilient modulus. Besides, present rutting failure criterion provides no indication of the behavior of rutting over time, and the effect of principal stress axis rotation on rutting development is also not captured. To overcome such limitations, this study modified the present Japanese pavement design method through the following two main aspects: (1) Replacing constant elastic modulus of base and subgrade layer to resilient modulus related to stress states and complex climate conditions, which are defined as the combination of fluctuating water content and freeze-thaw action; (2) Modifying rutting failure criterion by considering generally used MEPDG model and also the effect of principal stress axis rotation. All modifications are performed based on laboratory element test like suction-controlled freeze-thaw triaxial test, which could simulate complex climate conditions, and multi-ring shear test, which could simulate principal stress axis rotation. Besides, modified criteria are examined by comparing to long-term measured performance of test pavements built in Hokkaido, the north island of Japan. Modified Japanese pavement design method shows high applicability and accuracy on the pavement life prediction, especially for the flexible pavement in cold regions like Hokkaido.
Rights: © <2021>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 石川 達也

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