VISCOELASTIC ANALYSIS OF ASPHALT PAVEMENT ON STEEL DECK BRIDGE TO FIND CAUSES OF DAMAGES

損傷発生原因に着目した鋼床版橋面舗装部の線形粘弾性解析

In the asphalt pavement on steel deck bridges, various damages appear, which are much more serious than pavements on other structures. Causes of the damages are not clear, because the strain behaviors of the pavement are not well understood. In this study, a viscoelastic FEM analysis was employed to clarify the strain behavior of the asphalt pavements. The FEM model used fine mesh layout to investigate the change of strain in the small area around wheel tires. In the analysis, high tensile strains were calculated close to wheel tires, which might cause the surface cracks. Furthermore, reduction of bonding stiffness between the pavement and the steel deck could enlarge the strains and create the slip failure at the bottom of the asphalt pavement.　橋梁上のアスファルト舗装では様々な損傷が発生しており，特に鋼床版舗装での損傷が多い．しかし，交通荷重載荷時の橋梁上のアスファルト舗装の挙動は十分に把握されているとはいえない．筆者らはこれまで，線形粘弾性解析を用いてアスファルト舗装の挙動に関する研究を実施しており，弾性解析では表現できない鋼床版舗装特有の挙動を再現することに成功している．本研究では，鋼床版舗装を対象とした詳細な有限要素法モデルによる線形粘弾性解析を実施し，アスファルト舗装の損傷発生原因に着目した舗装体の挙動を検討した．その結果，鋼床版舗装におけるタイヤ近傍の粘弾性挙動を明らかにした．さらに，輪荷重の連行の影響，舗装下面の付着強さの影響について検討を行い，損傷の原因となり得るひずみ挙動について考察した．

• Record URL:
  https://doi.org/10.2208/jscejpe.72.I_219
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=VISCOELASTIC%20ANALYSIS%20OF%20ASPHALT%20PAVEMENT%20ON%20STEEL%20DECK%20BRIDGE%20TO%20FIND%20CAUSES%20OF%20DAMAGES&author=Y.%20TODA&author=Y.%20HISARI&author=O.%20KAMADA&author=S.%20YOKOTA&author=S.%20TANIGUCHI&publication_year=2016
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/21856559
• Authors:
  • TODA, Yoshihiko
  • Hisari, Yoshio
  • KAMADA, Osamu
  • YOKOTA, Shinya
  • TANIGUCHI, Sei
• Publication Date: 2016

Language

• English
• Japanese

Media Info

• Media Type: Web
• Pagination: pp I_219-I_227
• Serial:
  • Journal of Japan Society of Civil Engineers, Ser. E1 (Pavement Engineering)
  • Volume: 72
  • Issue Number: 3
  • Publisher: Japan Society of Civil Engineers
  • ISSN: 2185-6559
  • Serial URL: https://www.jstage.jst.go.jp/browse/jscejpe/-char/en

Subject/Index Terms

• TRT Terms: Asphalt pavements; Bridge decks; Cracking; Finite element method; Steel bridges; Strain (Mechanics); Viscoelastic materials
• Subject Areas: Bridges and other structures; Highways; Pavements;

Filing Info

• Accession Number: 01633637
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Apr 28 2017 4:51PM