Development and Validation of Long-trem Performance Model of Pavements Based on Mechnisitic Model

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289138
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Ishikawa National College of Technology
• Principal Investigator: Nishizawa Tatsuo 石川工業高等専門学校, その他部局等, 教授 (00143876)
• Co-Investigator(Kenkyū-buntansha): 佐々木 厳 国立研究開発法人土木研究所, その他部局等, 研究員 (00355794) ; 高橋 修 長岡技術科学大学, 工学(系)研究科(研究院), 教授 (60236263) ; 木幡 行宏 室蘭工業大学, 工学(系)研究科(研究院), 教授 (90215301) ; 竹内 康 東京農業大学, 地域環境科学部, 教授 (90271329) ; 前川 亮太 中央大学, 理工学部, 助教 (20455497) ; 堀内 智司 国立研究開発法人土木研究所, その他部局等, 研究員 (70626564)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 舗装 / パフォーマンス予測 / わだち掘れ / 温度応力 / 3DFEM / 試験舗装 / 電磁波レーダ

Outline of Final Research Achievements

In the prediction method of thermal stress developed in this study, temperatures and thermal stresses in a concrete slab is predicted by solving one dimensional heat transfer equation and using three dimensional finite element method (3DFEM). The proposed method is able to be applied for the design of concrete pavements under various temperature conditions.
A method for predicting rutting development on asphalt pavements was developed. In this method, plastic strains are assumed to be a function of elastic strain and load repetitions. The function is incorporated into Pave3D to calculate permanent deformations of entire pavement structure. Test asphalt pavement sections were constructed on a circular test road and subjected to traffic load. Permanent deflections of surface, base course and subgrade were detected with electromagnetic radar system. It becomes possible to know how much each layer changed in its thickness resulting in permanent deformation on the surface.

Free Research Field

舗装工学